| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.chrome.browser.tab; |
| |
| import android.annotation.SuppressLint; |
| import android.app.Activity; |
| import android.app.Application; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.Color; |
| import android.graphics.Rect; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.provider.Browser; |
| import android.support.annotation.Nullable; |
| import android.support.v4.view.ViewCompat; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.view.ContextThemeWrapper; |
| import android.view.View; |
| import android.view.View.OnClickListener; |
| import android.view.ViewGroup; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.widget.FrameLayout; |
| import android.widget.FrameLayout.LayoutParams; |
| |
| import org.chromium.base.ApiCompatibilityUtils; |
| import org.chromium.base.ApplicationStatus; |
| import org.chromium.base.ContextUtils; |
| import org.chromium.base.ObserverList; |
| import org.chromium.base.ObserverList.RewindableIterator; |
| import org.chromium.base.TraceEvent; |
| import org.chromium.base.VisibleForTesting; |
| import org.chromium.base.annotations.CalledByNative; |
| import org.chromium.base.metrics.RecordHistogram; |
| import org.chromium.chrome.R; |
| import org.chromium.chrome.browser.ChromeActionModeCallback; |
| import org.chromium.chrome.browser.ChromeActivity; |
| import org.chromium.chrome.browser.ChromeApplication; |
| import org.chromium.chrome.browser.ChromeFeatureList; |
| import org.chromium.chrome.browser.ChromeVersionInfo; |
| import org.chromium.chrome.browser.FrozenNativePage; |
| import org.chromium.chrome.browser.IntentHandler; |
| import org.chromium.chrome.browser.IntentHandler.TabOpenType; |
| import org.chromium.chrome.browser.NativePage; |
| import org.chromium.chrome.browser.SwipeRefreshHandler; |
| import org.chromium.chrome.browser.TabState; |
| import org.chromium.chrome.browser.TabState.WebContentsState; |
| import org.chromium.chrome.browser.UrlConstants; |
| import org.chromium.chrome.browser.WarmupManager; |
| import org.chromium.chrome.browser.WebContentsFactory; |
| import org.chromium.chrome.browser.banners.AppBannerManager; |
| import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager; |
| import org.chromium.chrome.browser.contextmenu.ContextMenuPopulator; |
| import org.chromium.chrome.browser.contextualsearch.ContextualSearchTabHelper; |
| import org.chromium.chrome.browser.customtabs.CustomTabActivity; |
| import org.chromium.chrome.browser.document.ChromeLauncherActivity; |
| import org.chromium.chrome.browser.download.ChromeDownloadDelegate; |
| import org.chromium.chrome.browser.fullscreen.FullscreenManager; |
| import org.chromium.chrome.browser.help.HelpAndFeedback; |
| import org.chromium.chrome.browser.infobar.InfoBarContainer; |
| import org.chromium.chrome.browser.media.ui.MediaSessionTabHelper; |
| import org.chromium.chrome.browser.ntp.NativePageAssassin; |
| import org.chromium.chrome.browser.ntp.NativePageFactory; |
| import org.chromium.chrome.browser.offlinepages.OfflinePageItem; |
| import org.chromium.chrome.browser.offlinepages.OfflinePageUtils; |
| import org.chromium.chrome.browser.policy.PolicyAuditor; |
| import org.chromium.chrome.browser.prerender.ExternalPrerenderHandler; |
| import org.chromium.chrome.browser.printing.TabPrinter; |
| import org.chromium.chrome.browser.profiles.Profile; |
| import org.chromium.chrome.browser.rlz.RevenueStats; |
| import org.chromium.chrome.browser.snackbar.SnackbarManager; |
| import org.chromium.chrome.browser.ssl.SecurityStateModel; |
| import org.chromium.chrome.browser.tab.TabUma.TabCreationState; |
| import org.chromium.chrome.browser.tabmodel.AsyncTabParamsManager; |
| import org.chromium.chrome.browser.tabmodel.TabModel; |
| import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType; |
| import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType; |
| import org.chromium.chrome.browser.tabmodel.TabModelImpl; |
| import org.chromium.chrome.browser.tabmodel.TabModelSelector; |
| import org.chromium.chrome.browser.tabmodel.TabReparentingParams; |
| import org.chromium.chrome.browser.util.ColorUtils; |
| import org.chromium.chrome.browser.util.FeatureUtilities; |
| import org.chromium.components.dom_distiller.core.DomDistillerUrlUtils; |
| import org.chromium.components.navigation_interception.InterceptNavigationDelegate; |
| import org.chromium.components.security_state.ConnectionSecurityLevel; |
| import org.chromium.content.browser.ChildProcessLauncher; |
| import org.chromium.content.browser.ContentView; |
| import org.chromium.content.browser.ContentViewClient; |
| import org.chromium.content.browser.ContentViewCore; |
| import org.chromium.content.browser.crypto.CipherFactory; |
| import org.chromium.content_public.browser.GestureStateListener; |
| import org.chromium.content_public.browser.LoadUrlParams; |
| import org.chromium.content_public.browser.WebContents; |
| import org.chromium.content_public.common.BrowserControlsState; |
| import org.chromium.content_public.common.BrowserControlsState.BrowserControlsStateEnum; |
| import org.chromium.content_public.common.Referrer; |
| import org.chromium.content_public.common.ResourceRequestBody; |
| import org.chromium.printing.PrintManagerDelegateImpl; |
| import org.chromium.printing.PrintingController; |
| import org.chromium.printing.PrintingControllerImpl; |
| import org.chromium.ui.base.LocalizationUtils; |
| import org.chromium.ui.base.PageTransition; |
| import org.chromium.ui.base.ViewAndroidDelegate; |
| import org.chromium.ui.base.WindowAndroid; |
| import org.chromium.ui.mojom.WindowOpenDisposition; |
| |
| import java.lang.ref.WeakReference; |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| |
| /** |
| * The basic Java representation of a tab. Contains and manages a {@link ContentView}. |
| * <p> |
| * This class is intended to be extended either on Java or both Java and C++, with ownership managed |
| * by this base class. |
| * <p> |
| * Extending just Java: |
| * - Just extend the class normally. Do not override initializeNative(). |
| * Extending Java and C++: |
| * - Because of the inner-workings of JNI, the subclass is responsible for constructing the native |
| * subclass, which in turn constructs TabAndroid (the native counterpart to Tab), which in |
| * turn sets the native pointer for Tab. For destruction, subclasses in Java must clear |
| * their own native pointer reference, but Tab#destroy() will handle deleting the native |
| * object. |
| */ |
| public class Tab implements ViewGroup.OnHierarchyChangeListener, |
| View.OnSystemUiVisibilityChangeListener { |
| public static final int INVALID_TAB_ID = -1; |
| |
| /** Return value from {@link #getBookmarkId()} if this tab is not bookmarked. */ |
| public static final long INVALID_BOOKMARK_ID = -1; |
| |
| private static final long INVALID_TIMESTAMP = -1; |
| |
| /** |
| * The required page load percentage for the page to be considered ready assuming the |
| * TextureView is also ready. |
| */ |
| private static final int CONSIDERED_READY_LOAD_PERCENTAGE = 100; |
| |
| /** Used for logging. */ |
| private static final String TAG = "Tab"; |
| |
| private static final String PRODUCT_VERSION = ChromeVersionInfo.getProductVersion(); |
| |
| private long mNativeTabAndroid; |
| |
| /** Unique id of this tab (within its container). */ |
| private final int mId; |
| |
| /** Whether or not this tab is an incognito tab. */ |
| private final boolean mIncognito; |
| |
| /** |
| * An Application {@link Context}. Unlike {@link #mActivity}, this is the only one that is |
| * publicly exposed to help prevent leaking the {@link Activity}. |
| */ |
| private final Context mThemedApplicationContext; |
| |
| /** Gives {@link Tab} a way to interact with the Android window. */ |
| private WindowAndroid mWindowAndroid; |
| |
| /** Whether or not this {@link Tab} is initialized and should be interacted with. */ |
| private boolean mIsInitialized; |
| |
| /** The current native page (e.g. chrome-native://newtab), or {@code null} if there is none. */ |
| private NativePage mNativePage; |
| |
| /** InfoBar container to show InfoBars for this tab. */ |
| private InfoBarContainer mInfoBarContainer; |
| |
| /** Controls overscroll pull-to-refresh behavior for this tab. */ |
| private SwipeRefreshHandler mSwipeRefreshHandler; |
| |
| /** The sync id of the Tab if session sync is enabled. */ |
| private int mSyncId; |
| |
| /** {@link ContentViewCore} showing the current page, or {@code null} if the tab is frozen. */ |
| private ContentViewCore mContentViewCore; |
| |
| /** Listens to gesture events fired by the ContentViewCore. */ |
| private GestureStateListener mGestureStateListener; |
| |
| /** The parent view of the ContentView and the InfoBarContainer. */ |
| private View mContentView; |
| |
| /** A list of Tab observers. These are used to broadcast Tab events to listeners. */ |
| private final ObserverList<TabObserver> mObservers = new ObserverList<>(); |
| |
| // Content layer Observers and Delegates |
| private ContentViewClient mContentViewClient; |
| private TabWebContentsObserver mWebContentsObserver; |
| private TabWebContentsDelegateAndroid mWebContentsDelegate; |
| |
| /** |
| * If this tab was opened from another tab, store the id of the tab that |
| * caused it to be opened so that we can activate it when this tab gets |
| * closed. |
| */ |
| private int mParentId = INVALID_TAB_ID; |
| |
| /** |
| * If this tab was opened from another tab in another Activity, this is the Intent that can be |
| * fired to bring the parent Activity back. |
| * TODO(dfalcantara): Remove this mechanism when we have a global TabManager. |
| */ |
| private Intent mParentIntent; |
| |
| /** |
| * Whether the tab should be grouped with its parent tab. |
| */ |
| private boolean mGroupedWithParent = true; |
| |
| private boolean mIsClosing; |
| private boolean mIsShowingErrorPage; |
| |
| private Bitmap mFavicon; |
| |
| private String mFaviconUrl; |
| |
| /** |
| * The size in pixels at which favicons will be drawn. Ideally mFavicon will have this size to |
| * avoid scaling artifacts. |
| */ |
| private int mIdealFaviconSize; |
| |
| /** Whether or not the TabState has changed. */ |
| private boolean mIsTabStateDirty = true; |
| |
| /** |
| * Saves how this tab was launched (from a link, external app, etc) so that |
| * we can determine the different circumstances in which it should be |
| * closed. For example, a tab opened from an external app should be closed |
| * when the back stack is empty and the user uses the back hardware key. A |
| * standard tab however should be kept open and the entire activity should |
| * be moved to the background. |
| */ |
| private final TabLaunchType mLaunchType; |
| |
| /** |
| * Navigation state of the WebContents as returned by nativeGetContentsStateAsByteBuffer(), |
| * stored to be inflated on demand using unfreezeContents(). If this is not null, there is no |
| * WebContents around. Upon tab switch WebContents will be unfrozen and the variable will be set |
| * to null. |
| */ |
| private WebContentsState mFrozenContentsState; |
| |
| /** |
| * Whether the restoration from frozen state failed. |
| */ |
| private boolean mFailedToRestore; |
| |
| /** |
| * URL load to be performed lazily when the Tab is next shown. |
| */ |
| private LoadUrlParams mPendingLoadParams; |
| |
| /** |
| * URL of the page currently loading. Used as a fall-back in case tab restore fails. |
| */ |
| private String mUrl; |
| |
| /** |
| * The external application that this Tab is associated with (null if not associated with any |
| * app). Allows reusing of tabs opened from the same application. |
| */ |
| private String mAppAssociatedWith; |
| |
| /** |
| * Keeps track of whether the Tab should be kept in the TabModel after the user hits "back". |
| * Used by Document mode to keep track of whether we want to remove the tab when user hits back. |
| */ |
| private boolean mShouldPreserve; |
| |
| /** |
| * Indicates if the tab needs to be reloaded upon next display. This is set to true when the tab |
| * crashes while in background, or if a speculative restore in background gets cancelled before |
| * it completes. |
| */ |
| private boolean mNeedsReload; |
| |
| /** |
| * True while a page load is in progress. |
| */ |
| private boolean mIsLoading; |
| |
| /** |
| * True while a restore page load is in progress. |
| */ |
| private boolean mIsBeingRestored; |
| |
| /** |
| * Whether or not the Tab is currently visible to the user. |
| */ |
| private boolean mIsHidden = true; |
| |
| /** Whether the renderer is currently unresponsive. */ |
| private boolean mIsRendererUnresponsive; |
| |
| /** |
| * The last time this tab was shown or the time of its initialization if it wasn't yet shown. |
| */ |
| private long mTimestampMillis = INVALID_TIMESTAMP; |
| |
| /** |
| * Title of the ContentViews webpage.Always update mTitle through updateTitle() so that it also |
| * updates mIsTitleDirectionRtl correctly. |
| */ |
| private String mTitle; |
| |
| /** |
| * Indicates if mTitle should be displayed from right to left. |
| */ |
| private boolean mIsTitleDirectionRtl; |
| |
| /** |
| * The mInterceptNavigationDelegate will be consulted for top-level frame navigations. This |
| * allows presenting the intent picker to the user so that a native Android application can be |
| * used if available. |
| */ |
| private InterceptNavigationDelegateImpl mInterceptNavigationDelegate; |
| |
| /** |
| * Whether didCommitProvisionalLoadForFrame() hasn't yet been called for the current native page |
| * (page A). To decrease latency, we show native pages in both loadUrl() and |
| * didCommitProvisionalLoadForFrame(). However, we mustn't show a new native page (page B) in |
| * loadUrl() if the current native page hasn't yet been committed. Otherwise, we'll show each |
| * page twice (A, B, A, B): the first two times in loadUrl(), the second two times in |
| * didCommitProvisionalLoadForFrame(). |
| */ |
| private boolean mIsNativePageCommitPending; |
| |
| private TabRedirectHandler mTabRedirectHandler; |
| |
| private FullscreenManager mFullscreenManager; |
| private float mPreviousTopControlsOffsetY = Float.NaN; |
| private float mPreviousBottomControlsOffsetY = Float.NaN; |
| private float mPreviousContentOffsetY = Float.NaN; |
| |
| /** |
| * Indicates whether this tab has been detached from its activity and the corresponding |
| * {@link WindowAndroid} for reparenting to a new activity. |
| */ |
| private boolean mIsDetachedForReparenting; |
| |
| /** |
| * The UMA object used to report stats for this tab. Note that this may be null under certain |
| * conditions, such as incognito mode. |
| */ |
| private TabUma mTabUma; |
| |
| /** |
| * Reference to the current sadTabView if one is defined. |
| */ |
| private View mSadTabView; |
| |
| /** |
| * Counts the number of successive refreshes on the sad tab page. The count is is reset after a |
| * successful page load. |
| */ |
| private int mSadTabSuccessiveRefreshCounter; |
| |
| private final int mDefaultThemeColor; |
| private int mThemeColor; |
| |
| private ChromeDownloadDelegate mDownloadDelegate; |
| |
| /** Whether or not the tab closing the tab can send the user back to the app that opened it. */ |
| private boolean mIsAllowedToReturnToExternalApp; |
| |
| private class TabContentViewClient extends ContentViewClient { |
| @Override |
| public void onBackgroundColorChanged(int color) { |
| Tab.this.onBackgroundColorChanged(color); |
| } |
| |
| @Override |
| public void onTopControlsChanged(float topControlsOffsetY, float topContentOffsetY) { |
| super.onTopControlsChanged(topControlsOffsetY, topContentOffsetY); |
| onOffsetsChanged(topControlsOffsetY, mPreviousBottomControlsOffsetY, |
| topContentOffsetY, isShowingSadTab()); |
| } |
| |
| @Override |
| public void onBottomControlsChanged(float bottomControlsOffsetY, |
| float bottomContentOffsetY) { |
| super.onBottomControlsChanged(bottomControlsOffsetY, bottomContentOffsetY); |
| onOffsetsChanged(mPreviousTopControlsOffsetY, bottomControlsOffsetY, |
| mPreviousContentOffsetY, isShowingSadTab()); |
| } |
| |
| @Override |
| public void onImeEvent() { |
| // Some text was set in the page. Don't reuse it if a tab is |
| // open from the same external application, we might lose some |
| // user data. |
| mAppAssociatedWith = null; |
| } |
| |
| @Override |
| public void onFocusedNodeEditabilityChanged(boolean editable) { |
| if (getFullscreenManager() == null) return; |
| updateFullscreenEnabledState(); |
| } |
| |
| @Override |
| public int getSystemWindowInsetLeft() { |
| ChromeActivity activity = getActivity(); |
| if (activity != null && activity.getInsetObserverView() != null) { |
| return activity.getInsetObserverView().getSystemWindowInsetsLeft(); |
| } |
| return 0; |
| } |
| |
| @Override |
| public int getSystemWindowInsetTop() { |
| ChromeActivity activity = getActivity(); |
| if (activity != null && activity.getInsetObserverView() != null) { |
| return activity.getInsetObserverView().getSystemWindowInsetsTop(); |
| } |
| return 0; |
| } |
| |
| @Override |
| public int getSystemWindowInsetRight() { |
| ChromeActivity activity = getActivity(); |
| if (activity != null && activity.getInsetObserverView() != null) { |
| return activity.getInsetObserverView().getSystemWindowInsetsRight(); |
| } |
| return 0; |
| } |
| |
| @Override |
| public int getSystemWindowInsetBottom() { |
| ChromeActivity activity = getActivity(); |
| if (activity != null && activity.getInsetObserverView() != null) { |
| return activity.getInsetObserverView().getSystemWindowInsetsBottom(); |
| } |
| return 0; |
| } |
| } |
| |
| private GestureStateListener createGestureStateListener() { |
| return new GestureStateListener() { |
| @Override |
| public void onFlingStartGesture(int scrollOffsetY, int scrollExtentY) { |
| onScrollingStateChanged(); |
| } |
| |
| @Override |
| public void onFlingEndGesture(int scrollOffsetY, int scrollExtentY) { |
| onScrollingStateChanged(); |
| } |
| |
| @Override |
| public void onScrollStarted(int scrollOffsetY, int scrollExtentY) { |
| onScrollingStateChanged(); |
| } |
| |
| @Override |
| public void onScrollEnded(int scrollOffsetY, int scrollExtentY) { |
| onScrollingStateChanged(); |
| } |
| |
| private void onScrollingStateChanged() { |
| FullscreenManager fullscreenManager = getFullscreenManager(); |
| if (fullscreenManager == null) return; |
| fullscreenManager.onContentViewScrollingStateChanged( |
| getContentViewCore() != null && getContentViewCore().isScrollInProgress()); |
| } |
| }; |
| } |
| |
| // TODO(dtrainor): Port more methods to the observer. |
| private final TabObserver mTabObserver = new EmptyTabObserver() { |
| @Override |
| public void onSSLStateUpdated(Tab tab) { |
| PolicyAuditor auditor = |
| ((ChromeApplication) getApplicationContext()).getPolicyAuditor(); |
| auditor.notifyCertificateFailure( |
| PolicyAuditor.nativeGetCertificateFailure(getWebContents()), |
| getApplicationContext()); |
| updateFullscreenEnabledState(); |
| updateThemeColorIfNeeded(false); |
| } |
| |
| @Override |
| public void onUrlUpdated(Tab tab) { |
| updateThemeColorIfNeeded(false); |
| } |
| |
| @Override |
| public void onWebContentsSwapped(Tab tab, boolean didStartLoad, boolean didFinishLoad) { |
| if (!didStartLoad) return; |
| |
| String url = tab.getUrl(); |
| // Simulate the PAGE_LOAD_STARTED notification that we did not get. |
| didStartPageLoad(url, false); |
| |
| if (didFinishLoad) { |
| // Simulate the PAGE_LOAD_FINISHED notification that we did not get. |
| didFinishPageLoad(); |
| } |
| } |
| }; |
| |
| private TabDelegateFactory mDelegateFactory; |
| |
| private BrowserControlsVisibilityDelegate mBrowserControlsVisibilityDelegate; |
| |
| /** |
| * Creates an instance of a {@link Tab}. |
| * |
| * This constructor may be called before the native library has been loaded, so any additions |
| * must be vetted for library calls. |
| * |
| * @param id The id this tab should be identified with. |
| * @param incognito Whether or not this tab is incognito. |
| * @param window An instance of a {@link WindowAndroid}. |
| */ |
| public Tab(int id, boolean incognito, WindowAndroid window) { |
| this(id, INVALID_TAB_ID, incognito, null, window, null, null, null); |
| } |
| |
| /** |
| * Creates an instance of a {@link Tab}. |
| * |
| * This constructor can be called before the native library has been loaded, so any additions |
| * must be vetted for library calls. |
| * |
| * @param id The id this tab should be identified with. |
| * @param parentId The id id of the tab that caused this tab to be opened. |
| * @param incognito Whether or not this tab is incognito. |
| * @param context An instance of a {@link Context}. |
| * @param window An instance of a {@link WindowAndroid}. |
| * @param creationState State in which the tab is created, needed to initialize TabUma |
| * accounting. When null, TabUma will not be initialized. |
| * @param frozenState State containing information about this Tab, if it was persisted. |
| */ |
| @SuppressLint("HandlerLeak") |
| public Tab(int id, int parentId, boolean incognito, Context context, |
| WindowAndroid window, TabLaunchType type, TabCreationState creationState, |
| TabState frozenState) { |
| mId = TabIdManager.getInstance().generateValidId(id); |
| mParentId = parentId; |
| mIncognito = incognito; |
| mThemedApplicationContext = context != null ? new ContextThemeWrapper( |
| context.getApplicationContext(), ChromeActivity.getThemeId()) : null; |
| mWindowAndroid = window; |
| mLaunchType = type; |
| if (mThemedApplicationContext != null) { |
| Resources resources = mThemedApplicationContext.getResources(); |
| mIdealFaviconSize = resources.getDimensionPixelSize(R.dimen.default_favicon_size); |
| mDefaultThemeColor = mIncognito |
| ? ApiCompatibilityUtils.getColor(resources, R.color.incognito_primary_color) |
| : ApiCompatibilityUtils.getColor(resources, R.color.default_primary_color); |
| mThemeColor = calculateThemeColor(false); |
| } else { |
| mIdealFaviconSize = 16; |
| mDefaultThemeColor = 0; |
| mThemeColor = mDefaultThemeColor; |
| } |
| |
| // Restore data from the TabState, if it existed. |
| if (frozenState != null) { |
| assert type == TabLaunchType.FROM_RESTORE; |
| restoreFieldsFromState(frozenState); |
| } |
| |
| setContentViewClient(new TabContentViewClient()); |
| |
| mTabRedirectHandler = new TabRedirectHandler(mThemedApplicationContext); |
| addObserver(mTabObserver); |
| |
| if (incognito) { |
| CipherFactory.getInstance().triggerKeyGeneration(); |
| } |
| |
| ContextualSearchTabHelper.createForTab(this); |
| MediaSessionTabHelper.createForTab(this); |
| |
| if (creationState != null) { |
| mTabUma = new TabUma(creationState); |
| if (frozenState == null) { |
| assert creationState != TabCreationState.FROZEN_ON_RESTORE; |
| } else { |
| assert type == TabLaunchType.FROM_RESTORE |
| && creationState == TabCreationState.FROZEN_ON_RESTORE; |
| } |
| } |
| } |
| |
| /** |
| * Restores member fields from the given TabState. |
| * @param state TabState containing information about this Tab. |
| */ |
| private void restoreFieldsFromState(TabState state) { |
| assert state != null; |
| mAppAssociatedWith = state.openerAppId; |
| mFrozenContentsState = state.contentsState; |
| mSyncId = (int) state.syncId; |
| mShouldPreserve = state.shouldPreserve; |
| mTimestampMillis = state.timestampMillis; |
| mUrl = state.getVirtualUrlFromState(); |
| |
| mThemeColor = state.hasThemeColor() ? state.getThemeColor() : getDefaultThemeColor(); |
| |
| mTitle = state.getDisplayTitleFromState(); |
| mIsTitleDirectionRtl = mTitle != null |
| && LocalizationUtils.getFirstStrongCharacterDirection(mTitle) |
| == LocalizationUtils.RIGHT_TO_LEFT; |
| } |
| |
| /** |
| * Adds a {@link TabObserver} to be notified on {@link Tab} changes. |
| * @param observer The {@link TabObserver} to add. |
| */ |
| public void addObserver(TabObserver observer) { |
| mObservers.addObserver(observer); |
| } |
| |
| /** |
| * Removes a {@link TabObserver}. |
| * @param observer The {@link TabObserver} to remove. |
| */ |
| public void removeObserver(TabObserver observer) { |
| mObservers.removeObserver(observer); |
| } |
| |
| /** |
| * @return Whether or not this tab has a previous navigation entry. |
| */ |
| public boolean canGoBack() { |
| return getWebContents() != null && getWebContents().getNavigationController().canGoBack(); |
| } |
| |
| /** |
| * @return Whether or not this tab has a navigation entry after the current one. |
| */ |
| public boolean canGoForward() { |
| return getWebContents() != null |
| && getWebContents().getNavigationController().canGoForward(); |
| } |
| |
| /** |
| * Goes to the navigation entry before the current one. |
| */ |
| public void goBack() { |
| if (getWebContents() != null) getWebContents().getNavigationController().goBack(); |
| } |
| |
| /** |
| * Goes to the navigation entry after the current one. |
| */ |
| public void goForward() { |
| if (getWebContents() != null) getWebContents().getNavigationController().goForward(); |
| } |
| |
| /** |
| * Loads the current navigation if there is a pending lazy load (after tab restore). |
| */ |
| public void loadIfNecessary() { |
| if (getWebContents() != null) getWebContents().getNavigationController().loadIfNecessary(); |
| } |
| |
| /** |
| * Requests the current navigation to be loaded upon the next call to loadIfNecessary(). |
| */ |
| protected void requestRestoreLoad() { |
| if (getWebContents() != null) { |
| getWebContents().getNavigationController().requestRestoreLoad(); |
| } |
| } |
| |
| /** |
| * Causes this tab to navigate to the specified URL. |
| * @param params parameters describing the url load. Note that it is important to set correct |
| * page transition as it is used for ranking URLs in the history so the omnibox |
| * can report suggestions correctly. |
| * @return FULL_PRERENDERED_PAGE_LOAD or PARTIAL_PRERENDERED_PAGE_LOAD if the page has been |
| * prerendered. DEFAULT_PAGE_LOAD if it had not. |
| */ |
| public int loadUrl(LoadUrlParams params) { |
| try { |
| TraceEvent.begin("Tab.loadUrl"); |
| // TODO(tedchoc): When showing the android NTP, delay the call to nativeLoadUrl until |
| // the android view has entirely rendered. |
| if (!mIsNativePageCommitPending) { |
| mIsNativePageCommitPending = maybeShowNativePage(params.getUrl(), false); |
| } |
| |
| removeSadTabIfPresent(); |
| |
| // Clear the app association if the user navigated to a different page from the omnibox. |
| if ((params.getTransitionType() & PageTransition.FROM_ADDRESS_BAR) |
| == PageTransition.FROM_ADDRESS_BAR) { |
| mAppAssociatedWith = null; |
| setIsAllowedToReturnToExternalApp(false); |
| } |
| if ("chrome://java-crash/".equals(params.getUrl())) { |
| return handleJavaCrash(); |
| } |
| |
| // We load the URL from the tab rather than directly from the ContentView so the tab has |
| // a chance of using a prerenderer page is any. |
| int loadType = nativeLoadUrl(mNativeTabAndroid, params.getUrl(), |
| params.getVerbatimHeaders(), params.getPostData(), params.getTransitionType(), |
| params.getReferrer() != null ? params.getReferrer().getUrl() : null, |
| // Policy will be ignored for null referrer url, 0 is just a placeholder. |
| // TODO(ppi): Should we pass Referrer jobject and add JNI methods to read it |
| // from the native? |
| params.getReferrer() != null ? params.getReferrer().getPolicy() : 0, |
| params.getIsRendererInitiated(), params.getShouldReplaceCurrentEntry(), |
| params.getIntentReceivedTimestamp(), params.getHasUserGesture()); |
| |
| for (TabObserver observer : mObservers) { |
| observer.onLoadUrl(this, params, loadType); |
| } |
| return loadType; |
| } finally { |
| TraceEvent.end("Tab.loadUrl"); |
| } |
| } |
| |
| /** |
| * Called when the contextual ActionBar is shown or hidden. |
| * @param show {@code true} when the ActionBar is shown; {@code false} otherwise. |
| */ |
| public void notifyContextualActionBarVisibilityChanged(boolean show) { |
| for (TabObserver observer : mObservers) { |
| observer.onContextualActionBarVisibilityChanged(this, show); |
| } |
| } |
| |
| /** |
| * Throws a RuntimeException. Useful for testing crash reports with obfuscated Java stacktraces. |
| */ |
| private int handleJavaCrash() { |
| throw new RuntimeException("Intentional Java Crash"); |
| } |
| |
| /** |
| * Load the original image (uncompressed by spdy proxy) in this tab. |
| */ |
| void loadOriginalImage() { |
| if (mNativeTabAndroid != 0) nativeLoadOriginalImage(mNativeTabAndroid); |
| } |
| |
| /** |
| * @return Whether or not the {@link Tab} is currently showing an interstitial page, such as |
| * a bad HTTPS page. |
| */ |
| public boolean isShowingInterstitialPage() { |
| return getWebContents() != null && getWebContents().isShowingInterstitialPage(); |
| } |
| |
| /** |
| * @return Whether the {@link Tab} is currently showing an error page. |
| */ |
| public boolean isShowingErrorPage() { |
| return mIsShowingErrorPage; |
| } |
| |
| /** |
| * Sets whether the tab is showing an error page. This is reset whenever the tab finishes a |
| * navigation. |
| * |
| * @param isShowingErrorPage Whether the tab shows an error page. |
| */ |
| public void setIsShowingErrorPage(boolean isShowingErrorPage) { |
| mIsShowingErrorPage = isShowingErrorPage; |
| } |
| |
| /** |
| * @return Whether or not the tab has something valid to render. |
| */ |
| public boolean isReady() { |
| return mNativePage != null || (getWebContents() != null && getWebContents().isReady()); |
| } |
| |
| /** |
| * @return The {@link View} displaying the current page in the tab. This can be {@code null}, if |
| * the tab is frozen or being initialized or destroyed. |
| */ |
| public View getView() { |
| return mNativePage != null ? mNativePage.getView() : mContentView; |
| } |
| |
| /** |
| * @return The width of the content of this tab. Can be 0 if there is no content. |
| */ |
| public int getWidth() { |
| View view = getView(); |
| return view != null ? view.getWidth() : 0; |
| } |
| |
| /** |
| * @return The height of the content of this tab. Can be 0 if there is no content. |
| */ |
| public int getHeight() { |
| View view = getView(); |
| return view != null ? view.getHeight() : 0; |
| } |
| |
| /** |
| * @return The application {@link Context} associated with this tab. |
| */ |
| protected Context getApplicationContext() { |
| return mThemedApplicationContext.getApplicationContext(); |
| } |
| |
| /** |
| * @return {@link ChromeActivity} that currently contains this {@link Tab} in its |
| * {@link TabModel}. |
| */ |
| public ChromeActivity getActivity() { |
| if (getWindowAndroid() == null) return null; |
| Activity activity = WindowAndroid.activityFromContext( |
| getWindowAndroid().getContext().get()); |
| if (activity instanceof ChromeActivity) return (ChromeActivity) activity; |
| return null; |
| } |
| |
| /** |
| * @return {@link TabModelSelector} that currently hosts the {@link TabModel} for this |
| * {@link Tab}. |
| */ |
| public TabModelSelector getTabModelSelector() { |
| if (getActivity() == null) return null; |
| return getActivity().getTabModelSelector(); |
| } |
| |
| /** |
| * @return The infobar container. |
| */ |
| public final InfoBarContainer getInfoBarContainer() { |
| return mInfoBarContainer; |
| } |
| |
| /** @return An opaque "state" object that can be persisted to storage. */ |
| public TabState getState() { |
| if (!isInitialized()) return null; |
| TabState tabState = new TabState(); |
| tabState.contentsState = getWebContentsState(); |
| tabState.openerAppId = mAppAssociatedWith; |
| tabState.parentId = mParentId; |
| tabState.shouldPreserve = mShouldPreserve; |
| tabState.syncId = mSyncId; |
| tabState.timestampMillis = mTimestampMillis; |
| tabState.themeColor = getThemeColor(); |
| return tabState; |
| } |
| |
| /** @return WebContentsState representing the state of the WebContents (navigations, etc.) */ |
| public WebContentsState getFrozenContentsState() { |
| return mFrozenContentsState; |
| } |
| |
| /** Returns an object representing the state of the Tab's WebContents. */ |
| private TabState.WebContentsState getWebContentsState() { |
| if (mFrozenContentsState != null) return mFrozenContentsState; |
| |
| // Native call returns null when buffer allocation needed to serialize the state failed. |
| ByteBuffer buffer = getWebContentsStateAsByteBuffer(); |
| if (buffer == null) return null; |
| |
| TabState.WebContentsState state = new TabState.WebContentsStateNative(buffer); |
| state.setVersion(TabState.CONTENTS_STATE_CURRENT_VERSION); |
| return state; |
| } |
| |
| /** Returns an ByteBuffer representing the state of the Tab's WebContents. */ |
| private ByteBuffer getWebContentsStateAsByteBuffer() { |
| if (mPendingLoadParams == null) { |
| return TabState.getContentsStateAsByteBuffer(this); |
| } else { |
| Referrer referrer = mPendingLoadParams.getReferrer(); |
| return TabState.createSingleNavigationStateAsByteBuffer( |
| mPendingLoadParams.getUrl(), |
| referrer != null ? referrer.getUrl() : null, |
| // Policy will be ignored for null referrer url, 0 is just a placeholder. |
| referrer != null ? referrer.getPolicy() : 0, |
| isIncognito()); |
| } |
| } |
| |
| /** |
| * Prints the current page. |
| * |
| * @return Whether the printing process is started successfully. |
| **/ |
| public boolean print() { |
| assert mNativeTabAndroid != 0; |
| return nativePrint(mNativeTabAndroid); |
| } |
| |
| @CalledByNative |
| public void setPendingPrint() { |
| PrintingController printingController = PrintingControllerImpl.getInstance(); |
| if (printingController == null) return; |
| |
| printingController.setPendingPrint(new TabPrinter(this), |
| new PrintManagerDelegateImpl(getActivity())); |
| } |
| |
| /** |
| * Reloads the current page content. |
| */ |
| public void reload() { |
| // TODO(dtrainor): Should we try to rebuild the ContentView if it's frozen? |
| if (isOfflinePage()) { |
| // If current page is an offline page, reload it with custom behavior defined in extra |
| // header respected. |
| OfflinePageUtils.reload(this); |
| } else { |
| if (getWebContents() != null) getWebContents().getNavigationController().reload(true); |
| } |
| } |
| |
| /** |
| * Reloads the current page content. |
| * This version ignores the cache and reloads from the network. |
| */ |
| public void reloadIgnoringCache() { |
| if (getWebContents() != null) { |
| getWebContents().getNavigationController().reloadBypassingCache(true); |
| } |
| } |
| |
| /** |
| * Reloads all the Lo-Fi images in this Tab's WebContents. |
| * This version ignores the cache and reloads from the network. |
| */ |
| public void reloadLoFiImages() { |
| if (getWebContents() != null) { |
| getWebContents().reloadLoFiImages(); |
| } |
| } |
| |
| /** |
| * @return Whether or not the loading and rendering of the page is done. |
| */ |
| @VisibleForTesting |
| public boolean isLoadingAndRenderingDone() { |
| return isReady() && getProgress() >= CONSIDERED_READY_LOAD_PERCENTAGE; |
| } |
| |
| /** Stop the current navigation. */ |
| public void stopLoading() { |
| if (isLoading()) { |
| RewindableIterator<TabObserver> observers = getTabObservers(); |
| while (observers.hasNext()) observers.next().onPageLoadFinished(this); |
| } |
| if (getWebContents() != null) getWebContents().stop(); |
| } |
| |
| /** |
| * @return a value between 0 and 100 reflecting what percentage of the page load is complete. |
| */ |
| public int getProgress() { |
| if (!isLoading()) return 100; |
| |
| TabWebContentsDelegateAndroid delegate = getTabWebContentsDelegateAndroid(); |
| return delegate != null ? delegate.getMostRecentProgress() : 0; |
| } |
| |
| /** |
| * @return The background color of the tab. |
| */ |
| public int getBackgroundColor() { |
| if (mNativePage != null) return mNativePage.getBackgroundColor(); |
| if (getWebContents() != null) return getWebContents().getBackgroundColor(); |
| return Color.WHITE; |
| } |
| |
| /** |
| * @return The current theme color based on the value passed from the web contents and the |
| * security state. |
| */ |
| public int getThemeColor() { |
| return mThemeColor; |
| } |
| |
| /** |
| * Calculate the theme color based on if the page is native, the theme color changed, etc. |
| * @param didWebContentsThemeColorChange If the theme color of the web contents is known to have |
| * changed. |
| * @return The theme color that should be used for this tab. |
| */ |
| private int calculateThemeColor(boolean didWebContentsThemeColorChange) { |
| if (isNativePage()) return mNativePage.getThemeColor(); |
| |
| // Start by assuming the current theme color is that one that should be used. This will |
| // either be transparent, the last theme color, or the color restored from TabState. |
| int themeColor = mThemeColor; |
| |
| // Only use the web contents for the theme color if it is known to have changed, This |
| // corresponds to the didChangeThemeColor in WebContentsObserver. |
| if (getWebContents() != null && didWebContentsThemeColorChange) { |
| themeColor = getWebContents().getThemeColor(); |
| if (themeColor != 0 && !ColorUtils.isValidThemeColor(themeColor)) themeColor = 0; |
| } |
| |
| // Do not apply the theme color if there are any security issues on the page. |
| int securityLevel = getSecurityLevel(); |
| if (securityLevel == ConnectionSecurityLevel.DANGEROUS |
| || securityLevel == ConnectionSecurityLevel.SECURITY_WARNING |
| || securityLevel == ConnectionSecurityLevel.SECURE_WITH_POLICY_INSTALLED_CERT) { |
| themeColor = getDefaultThemeColor(); |
| } |
| |
| if (isShowingInterstitialPage()) themeColor = getDefaultThemeColor(); |
| |
| if (themeColor == Color.TRANSPARENT) themeColor = getDefaultThemeColor(); |
| if (isIncognito()) themeColor = getDefaultThemeColor(); |
| |
| // Ensure there is no alpha component to the theme color as that is not supported in the |
| // dependent UI. |
| themeColor |= 0xFF000000; |
| return themeColor; |
| } |
| |
| /** |
| * Determines if the theme color has changed and notifies the listeners if it has. |
| * @param didWebContentsThemeColorChange If the theme color of the web contents is known to have |
| * changed. |
| */ |
| void updateThemeColorIfNeeded(boolean didWebContentsThemeColorChange) { |
| int themeColor = calculateThemeColor(didWebContentsThemeColorChange); |
| if (themeColor == mThemeColor) return; |
| mThemeColor = themeColor; |
| RewindableIterator<TabObserver> observers = getTabObservers(); |
| while (observers.hasNext()) { |
| observers.next().onDidChangeThemeColor(this, themeColor); |
| } |
| } |
| |
| /** |
| * @return The web contents associated with this tab. |
| */ |
| public WebContents getWebContents() { |
| return mContentViewCore != null ? mContentViewCore.getWebContents() : null; |
| } |
| |
| /** |
| * @return The profile associated with this tab. |
| */ |
| public Profile getProfile() { |
| if (mNativeTabAndroid == 0) return null; |
| return nativeGetProfileAndroid(mNativeTabAndroid); |
| } |
| |
| /** |
| * For more information about the uniqueness of {@link #getId()} see comments on {@link Tab}. |
| * @see Tab |
| * @return The id representing this tab. |
| */ |
| @CalledByNative |
| public int getId() { |
| return mId; |
| } |
| |
| /** |
| * @return Whether or not this tab is incognito. |
| */ |
| public boolean isIncognito() { |
| return mIncognito; |
| } |
| |
| /** |
| * @return The {@link ContentViewCore} associated with the current page. |
| */ |
| public ContentViewCore getActiveContentViewCore() { |
| return mContentViewCore; |
| } |
| |
| /** |
| * @return The {@link ContentViewCore} associated with the current page, or {@code null} if |
| * there is no current page or the current page is displayed using a native view. |
| */ |
| public ContentViewCore getContentViewCore() { |
| return mNativePage == null ? mContentViewCore : null; |
| } |
| |
| /** |
| * @return The {@link NativePage} associated with the current page, or {@code null} if there is |
| * no current page or the current page is displayed using something besides |
| * {@link NativePage}. |
| */ |
| public NativePage getNativePage() { |
| return mNativePage; |
| } |
| |
| /** |
| * @return Whether or not the {@link Tab} represents a {@link NativePage}. |
| */ |
| public boolean isNativePage() { |
| return mNativePage != null; |
| } |
| |
| /** |
| * Set whether or not the {@link ContentViewCore} should be using a desktop user agent for the |
| * currently loaded page. |
| * @param useDesktop If {@code true}, use a desktop user agent. Otherwise use a mobile one. |
| * @param reloadOnChange Reload the page if the user agent has changed. |
| */ |
| public void setUseDesktopUserAgent(boolean useDesktop, boolean reloadOnChange) { |
| if (getWebContents() != null) { |
| getWebContents().getNavigationController().setUseDesktopUserAgent( |
| useDesktop, reloadOnChange); |
| } |
| } |
| |
| /** |
| * @return Whether or not the {@link ContentViewCore} is using a desktop user agent. |
| */ |
| public boolean getUseDesktopUserAgent() { |
| return getWebContents() != null |
| && getWebContents().getNavigationController().getUseDesktopUserAgent(); |
| } |
| |
| /** |
| * @return The current {@link ConnectionSecurityLevel} for the tab. |
| */ |
| // TODO(tedchoc): Remove this and transition all clients to use ToolbarModel directly. |
| public int getSecurityLevel() { |
| return SecurityStateModel.getSecurityLevelForWebContents(getWebContents()); |
| } |
| |
| /** |
| * @return The sync id of the tab if session sync is enabled, {@code 0} otherwise. |
| */ |
| @CalledByNative |
| private int getSyncId() { |
| return mSyncId; |
| } |
| |
| /** |
| * @param syncId The sync id of the tab if session sync is enabled. |
| */ |
| @CalledByNative |
| private void setSyncId(int syncId) { |
| mSyncId = syncId; |
| } |
| |
| /** |
| * @return An {@link ObserverList.RewindableIterator} instance that points to all of |
| * the current {@link TabObserver}s on this class. Note that calling |
| * {@link java.util.Iterator#remove()} will throw an |
| * {@link UnsupportedOperationException}. |
| */ |
| protected ObserverList.RewindableIterator<TabObserver> getTabObservers() { |
| return mObservers.rewindableIterator(); |
| } |
| |
| /** |
| * @param client The {@link ContentViewClient} to be bound to any current or new |
| * {@link ContentViewCore}s associated with this {@link Tab}. |
| */ |
| private void setContentViewClient(ContentViewClient client) { |
| if (mContentViewClient == client) return; |
| |
| ContentViewClient oldClient = mContentViewClient; |
| mContentViewClient = client; |
| |
| if (mContentViewCore == null) return; |
| |
| if (mContentViewClient != null) { |
| mContentViewCore.setContentViewClient(mContentViewClient); |
| } else if (oldClient != null) { |
| // We can't set a null client, but we should clear references to the last one. |
| mContentViewCore.setContentViewClient(new ContentViewClient()); |
| } |
| } |
| |
| /** |
| * Called on the foreground tab when the Activity showing the Tab gets started. This is called |
| * on both cold and warm starts. |
| */ |
| public void onActivityShown() { |
| if (isHidden()) { |
| show(TabSelectionType.FROM_USER); |
| } else { |
| // The visible Tab's renderer process may have died after the activity was paused. |
| // Ensure that it's restored appropriately. |
| loadIfNeeded(); |
| } |
| |
| // When resuming the activity, force an update to the fullscreen state to ensure a |
| // subactivity did not change the fullscreen configuration of this ChromeTab's renderer in |
| // the case where it was shared. |
| updateFullscreenEnabledState(); |
| } |
| |
| /** |
| * Called on the foreground tab when the Activity showing the Tab gets stopped. |
| */ |
| public void onActivityHidden() { |
| hide(); |
| |
| if (mTabUma != null) mTabUma.onActivityHidden(); |
| } |
| |
| /** |
| * @return Whether the tab is ready to display or it should be faded in as it loads. |
| */ |
| public boolean shouldStall() { |
| return (isFrozen() || needsReload()) |
| && !NativePageFactory.isNativePageUrl(getUrl(), isIncognito()); |
| } |
| |
| /** |
| * Prepares the tab to be shown. This method is supposed to be called before the tab is |
| * displayed. It restores the ContentView if it is not available after the cold start and |
| * reloads the tab if its renderer has crashed. |
| * @param type Specifies how the tab was selected. |
| */ |
| public final void show(TabSelectionType type) { |
| try { |
| TraceEvent.begin("Tab.show"); |
| if (!isHidden()) return; |
| // Keep unsetting mIsHidden above loadIfNeeded(), so that we pass correct visibility |
| // when spawning WebContents in loadIfNeeded(). |
| mIsHidden = false; |
| |
| loadIfNeeded(); |
| assert !isFrozen(); |
| |
| if (mContentViewCore != null) mContentViewCore.onShow(); |
| |
| if (mTabUma != null) { |
| mTabUma.onShow(type, getTimestampMillis(), |
| computeMRURank(this, getTabModelSelector().getModel(mIncognito))); |
| } |
| |
| // If the NativePage was frozen while in the background (see NativePageAssassin), |
| // recreate the NativePage now. |
| if (getNativePage() instanceof FrozenNativePage) { |
| maybeShowNativePage(getUrl(), true); |
| } |
| NativePageAssassin.getInstance().tabShown(this); |
| |
| // If the page is still loading, update the progress bar (otherwise it would not show |
| // until the renderer notifies of new progress being made). |
| if (getProgress() < 100 && !isShowingInterstitialPage()) { |
| notifyLoadProgress(getProgress()); |
| } |
| |
| // Updating the timestamp has to happen after the showInternal() call since subclasses |
| // may use it for logging. |
| mTimestampMillis = System.currentTimeMillis(); |
| |
| for (TabObserver observer : mObservers) observer.onShown(this); |
| } finally { |
| TraceEvent.end("Tab.show"); |
| } |
| } |
| |
| /** |
| * Triggers the hiding logic for the view backing the tab. |
| */ |
| public final void hide() { |
| try { |
| TraceEvent.begin("Tab.hide"); |
| if (isHidden()) return; |
| mIsHidden = true; |
| |
| if (mContentViewCore != null) mContentViewCore.onHide(); |
| |
| // Clean up any fullscreen state that might impact other tabs. |
| if (mFullscreenManager != null) { |
| mFullscreenManager.setPersistentFullscreenMode(false); |
| } |
| |
| if (mTabUma != null) mTabUma.onHide(); |
| |
| mTabRedirectHandler.clear(); |
| |
| // Allow this tab's NativePage to be frozen if it stays hidden for a while. |
| NativePageAssassin.getInstance().tabHidden(this); |
| |
| for (TabObserver observer : mObservers) observer.onHidden(this); |
| } finally { |
| TraceEvent.end("Tab.hide"); |
| } |
| } |
| |
| /** |
| * Shows the given {@code nativePage} if it's not already showing. |
| * @param nativePage The {@link NativePage} to show. |
| */ |
| private void showNativePage(NativePage nativePage) { |
| if (mNativePage == nativePage) return; |
| NativePage previousNativePage = mNativePage; |
| mNativePage = nativePage; |
| pushNativePageStateToNavigationEntry(); |
| // Notifying of theme color change before content change because some of |
| // the observers depend on the theme information being correct in |
| // onContentChanged(). |
| updateThemeColorIfNeeded(false); |
| notifyContentChanged(); |
| destroyNativePageInternal(previousNativePage); |
| } |
| |
| /** |
| * Replaces the current NativePage with a empty stand-in for a NativePage. This can be used |
| * to reduce memory pressure. |
| */ |
| public void freezeNativePage() { |
| if (mNativePage == null || mNativePage instanceof FrozenNativePage) return; |
| assert mNativePage.getView().getParent() == null : "Cannot freeze visible native page"; |
| mNativePage = FrozenNativePage.freeze(mNativePage); |
| } |
| |
| /** |
| * Hides the current {@link NativePage}, if any, and shows the {@link ContentViewCore}'s view. |
| */ |
| protected void showRenderedPage() { |
| updateTitle(); |
| |
| if (mNativePage == null) return; |
| NativePage previousNativePage = mNativePage; |
| mNativePage = null; |
| notifyContentChanged(); |
| destroyNativePageInternal(previousNativePage); |
| } |
| |
| /** |
| * Initializes {@link Tab} with {@code webContents}. If {@code webContents} is {@code null} a |
| * new {@link WebContents} will be created for this {@link Tab}. |
| * @param webContents A {@link WebContents} object or {@code null} if one should be |
| * created. |
| * @param tabContentManager A {@link TabContentManager} instance or {@code null} if the web |
| * content will be managed/displayed manually. |
| * @param delegateFactory The {@link TabDelegateFactory} to be used for delegate creation. |
| * @param initiallyHidden Only used if {@code webContents} is {@code null}. Determines |
| * whether or not the newly created {@link WebContents} will be hidden |
| * or not. |
| * @param unfreeze Whether there should be an attempt to restore state at the end of |
| * the initialization. |
| */ |
| public final void initialize(WebContents webContents, TabContentManager tabContentManager, |
| TabDelegateFactory delegateFactory, boolean initiallyHidden, boolean unfreeze) { |
| try { |
| TraceEvent.begin("Tab.initialize"); |
| |
| mDelegateFactory = delegateFactory; |
| initializeNative(); |
| |
| RevenueStats.getInstance().tabCreated(this); |
| |
| mBrowserControlsVisibilityDelegate = |
| mDelegateFactory.createBrowserControlsVisibilityDelegate(this); |
| |
| // Attach the TabContentManager if we have one. This will bind this Tab's content layer |
| // to this manager. |
| // TODO(dtrainor): Remove this and move to a pull model instead of pushing the layer. |
| attachTabContentManager(tabContentManager); |
| |
| // If there is a frozen WebContents state or a pending lazy load, don't create a new |
| // WebContents. |
| if (getFrozenContentsState() != null || getPendingLoadParams() != null) { |
| if (unfreeze) unfreezeContents(); |
| return; |
| } |
| |
| boolean creatingWebContents = webContents == null; |
| if (creatingWebContents) { |
| webContents = WarmupManager.getInstance().takeSpareWebContents( |
| isIncognito(), initiallyHidden); |
| if (webContents == null) { |
| webContents = |
| WebContentsFactory.createWebContents(isIncognito(), initiallyHidden); |
| } |
| } |
| |
| ContentViewCore contentViewCore = ContentViewCore.fromWebContents(webContents); |
| |
| if (contentViewCore == null) { |
| initContentViewCore(webContents); |
| } else { |
| setContentViewCore(contentViewCore); |
| } |
| |
| if (!creatingWebContents && webContents.isLoadingToDifferentDocument()) { |
| didStartPageLoad(webContents.getUrl(), false); |
| } |
| |
| getAppBannerManager().setIsEnabledForTab(mDelegateFactory.canShowAppBanners(this)); |
| } finally { |
| if (mTimestampMillis == INVALID_TIMESTAMP) { |
| mTimestampMillis = System.currentTimeMillis(); |
| } |
| |
| TraceEvent.end("Tab.initialize"); |
| } |
| } |
| |
| /** |
| * Begins the tab reparenting process. Detaches the tab from its current activity and fires |
| * an Intent to reparent the tab into its new host activity. |
| * |
| * @param intent An optional intent with the desired component, flags, or extras to use when |
| * launching the new host activity. This intent's URI and action will be |
| * overriden. This may be null if no intent customization is needed. |
| * @param startActivityOptions Options to pass to {@link Activity#startActivity(Intent, Bundle)} |
| * @param finalizeCallback A callback that will be called after the tab is attached to the new |
| * host activity in {@link #attachAndFinishReparenting}. |
| * @return Whether reparenting succeeded. If false, the tab was not removed and the intent was |
| * not fired. |
| */ |
| public boolean detachAndStartReparenting(Intent intent, Bundle startActivityOptions, |
| Runnable finalizeCallback) { |
| ChromeActivity activity = getActivity(); |
| if (activity == null) return false; |
| |
| if (intent == null) intent = new Intent(); |
| if (intent.getComponent() == null) { |
| intent.setClass(mThemedApplicationContext, ChromeLauncherActivity.class); |
| } |
| intent.setAction(Intent.ACTION_VIEW); |
| if (TextUtils.isEmpty(intent.getDataString())) intent.setData(Uri.parse(getUrl())); |
| if (isIncognito()) { |
| intent.putExtra(Browser.EXTRA_APPLICATION_ID, |
| ContextUtils.getApplicationContext().getPackageName()); |
| intent.putExtra(IntentHandler.EXTRA_OPEN_NEW_INCOGNITO_TAB, true); |
| } |
| IntentHandler.addTrustedIntentExtras(intent); |
| |
| if (ChromeFeatureList.isEnabled(ChromeFeatureList.TAB_REPARENTING)) { |
| TabModelSelector tabModelSelector = getTabModelSelector(); |
| if (tabModelSelector == null) return false; |
| mIsDetachedForReparenting = true; |
| |
| // Add the tab to AsyncTabParamsManager before removing it from the current model to |
| // ensure the global count of tabs is correct. See crbug.com/611806. |
| intent.putExtra(IntentHandler.EXTRA_TAB_ID, mId); |
| AsyncTabParamsManager.add(mId, |
| new TabReparentingParams(this, intent, finalizeCallback)); |
| |
| tabModelSelector.getModel(mIncognito).removeTab(this); |
| |
| // TODO(yusufo): We can't call updateWindowAndroid here and set mWindowAndroid to null |
| // because many code paths (including navigation) expect the tab to always be associated |
| // with an activity, and will crash. crbug.com/657007 |
| if (mContentViewCore != null) mContentViewCore.updateWindowAndroid(null); |
| attachTabContentManager(null); |
| } |
| |
| activity.startActivity(intent, startActivityOptions); |
| return true; |
| } |
| |
| /** |
| * Finishes the tab reparenting process. Attaches the tab to the new activity, and updates the |
| * tab and related objects to reference the new activity. This updates many delegates inside the |
| * tab and {@link ContentViewCore} both on java and native sides. |
| * |
| * @param activity The new activity this tab should be associated with. |
| * @param tabDelegateFactory The new delegate factory this tab should be using. |
| * @Param reparentingParams The TabReparentingParams associated with this reparenting process. |
| */ |
| public void attachAndFinishReparenting(ChromeActivity activity, |
| TabDelegateFactory tabDelegateFactory, TabReparentingParams reparentingParams) { |
| // TODO(yusufo): Share these calls with the construction related calls. |
| // crbug.com/590281 |
| |
| updateWindowAndroid(activity.getWindowAndroid()); |
| |
| // Update for the controllers that need the Compositor from the new Activity. |
| attachTabContentManager(activity.getTabContentManager()); |
| mFullscreenManager = activity.getFullscreenManager(); |
| activity.getCompositorViewHolder().prepareForTabReparenting(); |
| |
| // Update the delegate factory, then recreate and propagate all delegates. |
| mDelegateFactory = tabDelegateFactory; |
| mWebContentsDelegate = mDelegateFactory.createWebContentsDelegate(this); |
| nativeUpdateDelegates(mNativeTabAndroid, |
| mWebContentsDelegate, mDelegateFactory.createContextMenuPopulator(this)); |
| mBrowserControlsVisibilityDelegate = |
| mDelegateFactory.createBrowserControlsVisibilityDelegate(this); |
| setInterceptNavigationDelegate(mDelegateFactory.createInterceptNavigationDelegate(this)); |
| getAppBannerManager().setIsEnabledForTab(mDelegateFactory.canShowAppBanners(this)); |
| |
| reparentingParams.finalizeTabReparenting(); |
| mIsDetachedForReparenting = false; |
| |
| // Reload the NativePage (if any), since the old NativePage has a reference to the old |
| // activity. |
| maybeShowNativePage(getUrl(), true); |
| |
| mIsTabStateDirty = true; |
| |
| for (TabObserver observer : mObservers) { |
| observer.onReparentingFinished(this); |
| } |
| } |
| |
| /** |
| * Update and propagate the new WindowAndroid. |
| * @param windowAndroid The WindowAndroid to propagate. |
| */ |
| public void updateWindowAndroid(WindowAndroid windowAndroid) { |
| // TODO(yusufo): mWindowAndroid can never be null until crbug.com/657007 is fixed. |
| assert windowAndroid != null; |
| mWindowAndroid = windowAndroid; |
| if (mContentViewCore != null) mContentViewCore.updateWindowAndroid(mWindowAndroid); |
| } |
| |
| /** |
| * @return Whether the tab is detached from its Activity and {@link WindowAndroid} for |
| * reparenting. Certain functionalities will not work until it is attached to a new activity |
| * with {@link Tab#attachAndFinishReparenting( |
| * ChromeActivity, TabDelegateFactory, TabReparentingParams)}. |
| */ |
| public boolean isDetachedForReparenting() { |
| return mIsDetachedForReparenting; |
| } |
| |
| /** |
| * Attach the content layer for this tab to the given {@link TabContentManager}. |
| * @param tabContentManager {@link TabContentManager} to attach to. |
| */ |
| public void attachTabContentManager(TabContentManager tabContentManager) { |
| if (mNativeTabAndroid == 0) return; |
| nativeAttachToTabContentManager(mNativeTabAndroid, tabContentManager); |
| } |
| |
| /** |
| * @return The delegate factory for testing purposes only. |
| */ |
| public TabDelegateFactory getDelegateFactory() { |
| return mDelegateFactory; |
| } |
| |
| public View getContentView() { |
| if (!isNativePage()) { |
| return getView(); |
| } else if (mContentViewCore != null) { |
| return mContentViewCore.getContainerView(); |
| } |
| return null; |
| } |
| |
| /** |
| * Called when a navigation begins and no navigation was in progress |
| * @param toDifferentDocument Whether this navigation will transition between |
| * documents (i.e., not a fragment navigation or JS History API call). |
| */ |
| protected void onLoadStarted(boolean toDifferentDocument) { |
| if (toDifferentDocument) mIsLoading = true; |
| for (TabObserver observer : mObservers) observer.onLoadStarted(this, toDifferentDocument); |
| } |
| |
| /** |
| * Called when a navigation completes and no other navigation is in progress. |
| */ |
| protected void onLoadStopped() { |
| // mIsLoading should only be false if this is a same-document navigation. |
| boolean toDifferentDocument = mIsLoading; |
| mIsLoading = false; |
| for (TabObserver observer : mObservers) observer.onLoadStopped(this, toDifferentDocument); |
| } |
| |
| /** |
| * Called when a page has started loading. |
| * @param validatedUrl URL being loaded. |
| * @param showingErrorPage Whether an error page is being shown. |
| */ |
| protected void didStartPageLoad(String validatedUrl, boolean showingErrorPage) { |
| updateTitle(); |
| removeSadTabIfPresent(); |
| |
| if (mIsRendererUnresponsive) handleRendererResponsive(); |
| |
| if (mTabUma != null) mTabUma.onPageLoadStarted(); |
| |
| for (TabObserver observer : mObservers) observer.onPageLoadStarted(this, validatedUrl); |
| } |
| |
| /** |
| * Called when a page has finished loading. |
| */ |
| protected void didFinishPageLoad() { |
| mIsBeingRestored = false; |
| mIsTabStateDirty = true; |
| updateTitle(); |
| updateFullscreenEnabledState(); |
| if (!isNativePage()) { |
| RecordHistogram.recordBooleanHistogram( |
| "Navigation.IsMobileOptimized", mContentViewCore.getIsMobileOptimizedHint()); |
| } |
| |
| // Reset the succressiveRefresh counter after successfully loading a page. |
| mSadTabSuccessiveRefreshCounter = 0; |
| |
| if (mTabUma != null) mTabUma.onPageLoadFinished(); |
| |
| for (TabObserver observer : mObservers) observer.onPageLoadFinished(this); |
| } |
| |
| /** |
| * Called when a page has failed loading. |
| * @param errorCode The error code causing the page to fail loading. |
| */ |
| protected void didFailPageLoad(int errorCode) { |
| mIsBeingRestored = false; |
| if (mTabUma != null) mTabUma.onLoadFailed(errorCode); |
| for (TabObserver observer : mObservers) observer.onPageLoadFailed(this, errorCode); |
| } |
| |
| /** |
| * Builds the native counterpart to this class. Meant to be overridden by subclasses to build |
| * subclass native counterparts instead. Subclasses should not call this via super and instead |
| * rely on the native class to create the JNI association. |
| * |
| * TODO(dfalcantara): Make this function harder to access. |
| */ |
| public void initializeNative() { |
| if (mNativeTabAndroid == 0) nativeInit(); |
| assert mNativeTabAndroid != 0; |
| mIsInitialized = true; |
| } |
| |
| /** |
| * Creates and initializes the {@link ContentViewCore}. |
| * |
| * @param webContents The WebContents object that will be used to build the |
| * {@link ContentViewCore}. |
| */ |
| protected void initContentViewCore(WebContents webContents) { |
| setContentViewCore(createContentViewCore(webContents)); |
| } |
| |
| private ContentViewCore createContentViewCore(WebContents webContents) { |
| ContentViewCore cvc = new ContentViewCore(mThemedApplicationContext, PRODUCT_VERSION); |
| ContentView cv = ContentView.createContentView(mThemedApplicationContext, cvc); |
| cv.setContentDescription(mThemedApplicationContext.getResources().getString( |
| R.string.accessibility_content_view)); |
| cvc.initialize(ViewAndroidDelegate.createBasicDelegate(cv), cv, webContents, |
| getWindowAndroid()); |
| ChromeActionModeCallback actionModeCallback = new ChromeActionModeCallback( |
| mThemedApplicationContext, this, cvc.getActionModeCallbackHelper()); |
| cvc.setActionModeCallback(actionModeCallback); |
| return cvc; |
| } |
| |
| /** |
| * Completes the {@link ContentViewCore} specific initialization around a native WebContents |
| * pointer. {@link #getNativePage()} will still return the {@link NativePage} if there is one. |
| * All initialization that needs to reoccur after a web contents swap should be added here. |
| * <p /> |
| * NOTE: If you attempt to pass a native WebContents that does not have the same incognito |
| * state as this tab this call will fail. |
| * |
| * @param cvc The content view core that needs to be set as active view for the tab. |
| */ |
| private void setContentViewCore(ContentViewCore cvc) { |
| try { |
| TraceEvent.begin("ChromeTab.setContentViewCore"); |
| NativePage previousNativePage = mNativePage; |
| mNativePage = null; |
| destroyNativePageInternal(previousNativePage); |
| |
| if (mContentViewCore != null) { |
| mContentViewCore.setObscuredByAnotherView(false); |
| } |
| |
| mContentViewCore = cvc; |
| cvc.getContainerView().setOnHierarchyChangeListener(this); |
| cvc.getContainerView().setOnSystemUiVisibilityChangeListener(this); |
| |
| mContentView = cvc.getContainerView(); |
| mWebContentsDelegate = mDelegateFactory.createWebContentsDelegate(this); |
| mWebContentsObserver = |
| new TabWebContentsObserver(mContentViewCore.getWebContents(), this); |
| |
| if (mContentViewClient != null) { |
| mContentViewCore.setContentViewClient(mContentViewClient); |
| } |
| |
| mDownloadDelegate = new ChromeDownloadDelegate(mThemedApplicationContext, this); |
| |
| assert mNativeTabAndroid != 0; |
| nativeInitWebContents(mNativeTabAndroid, mIncognito, mContentViewCore.getWebContents(), |
| mWebContentsDelegate, |
| new TabContextMenuPopulator( |
| mDelegateFactory.createContextMenuPopulator(this), this)); |
| |
| // In the case where restoring a Tab or showing a prerendered one we already have a |
| // valid infobar container, no need to recreate one. |
| if (mInfoBarContainer == null) { |
| ViewGroup bottomContainer = (ViewGroup) getActivity() |
| .findViewById(R.id.bottom_container); |
| // The InfoBarContainer needs to be created after the ContentView has been natively |
| // initialized. |
| mInfoBarContainer = new InfoBarContainer(mThemedApplicationContext, bottomContainer, |
| this); |
| } |
| mInfoBarContainer.setContentViewCore(mContentViewCore); |
| |
| mSwipeRefreshHandler = new SwipeRefreshHandler(mThemedApplicationContext, this); |
| |
| updateThemeColorIfNeeded(false); |
| notifyContentChanged(); |
| |
| // For browser tabs, we want to set accessibility focus to the page |
| // when it loads. This is not the default behavior for embedded |
| // web views. |
| mContentViewCore.setShouldSetAccessibilityFocusOnPageLoad(true); |
| |
| setInterceptNavigationDelegate(mDelegateFactory.createInterceptNavigationDelegate( |
| this)); |
| |
| if (mGestureStateListener == null) { |
| mGestureStateListener = createGestureStateListener(); |
| } |
| cvc.addGestureStateListener(mGestureStateListener); |
| } finally { |
| TraceEvent.end("ChromeTab.setContentViewCore"); |
| } |
| } |
| |
| /** |
| * Shows a native page for url if it's a valid chrome-native URL. Otherwise, does nothing. |
| * @param url The url of the current navigation. |
| * @param forceReload If true, the current native page (if any) will not be reused, even if it |
| * matches the URL. |
| * @return True, if a native page was displayed for url. |
| */ |
| boolean maybeShowNativePage(String url, boolean forceReload) { |
| // While detached for reparenting we don't have an owning Activity, or TabModelSelector, |
| // so we can't create the native page. The native page will be created once reparenting is |
| // completed. |
| if (mIsDetachedForReparenting) return false; |
| NativePage candidateForReuse = forceReload ? null : getNativePage(); |
| NativePage nativePage = NativePageFactory.createNativePageForURL(url, candidateForReuse, |
| this, getTabModelSelector(), getActivity()); |
| if (nativePage != null) { |
| showNativePage(nativePage); |
| notifyPageTitleChanged(); |
| notifyFaviconChanged(); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Notify observers when provisional load starts. |
| * @param isMainFrame Whether the load is happening for the main frame. |
| * @param validatedUrl The validated URL that is being navigated to. |
| */ |
| void handleDidStartProvisionalLoadForFrame(boolean isMainFrame, String validatedUrl) { |
| RewindableIterator<TabObserver> observers = getTabObservers(); |
| while (observers.hasNext()) { |
| observers.next().onDidStartProvisionalLoadForFrame(this, isMainFrame, validatedUrl); |
| } |
| } |
| |
| /** |
| * Update internal Tab state when provisional load gets committed. |
| * @param url The URL that was loaded. |
| * @param transitionType The transition type to the current URL. |
| */ |
| void handleDidCommitProvisonalLoadForFrame(String url, int transitionType) { |
| mIsNativePageCommitPending = false; |
| boolean isReload = (transitionType == PageTransition.RELOAD); |
| if (!maybeShowNativePage(url, isReload)) { |
| showRenderedPage(); |
| } |
| |
| if (getInterceptNavigationDelegate() != null) { |
| getInterceptNavigationDelegate().maybeUpdateNavigationHistory(); |
| } |
| } |
| |
| /** |
| * Constructs and shows a sad tab (Aw, Snap!). |
| */ |
| protected void showSadTab() { |
| if (getContentViewCore() != null) { |
| OnClickListener suggestionAction = new OnClickListener() { |
| @Override |
| public void onClick(View view) { |
| Activity activity = mWindowAndroid.getActivity().get(); |
| assert activity != null; |
| HelpAndFeedback.getInstance(activity).show(activity, |
| activity.getString(R.string.help_context_sad_tab), |
| Profile.getLastUsedProfile(), null); |
| } |
| }; |
| |
| // If the tab has crashed twice in a row change the button to "Send Feedback" and |
| // change the onClickListener. |
| final boolean showSendFeedbackButton = mSadTabSuccessiveRefreshCounter >= 1; |
| OnClickListener buttonAction = new OnClickListener() { |
| |
| @Override |
| public void onClick(View v) { |
| if (showSendFeedbackButton) { |
| getActivity().startHelpAndFeedback(Tab.this, "MobileSadTabFeedback"); |
| } else { |
| reload(); |
| } |
| } |
| }; |
| |
| // Make sure we are not adding the "Aw, snap" view over an existing one. |
| assert mSadTabView == null; |
| |
| mSadTabView = SadTabViewFactory.createSadTabView(mThemedApplicationContext, |
| suggestionAction, buttonAction, showSendFeedbackButton |
| ? R.string.sad_tab_send_feedback_label : R.string.sad_tab_reload_label); |
| mSadTabSuccessiveRefreshCounter++; |
| // Show the sad tab inside ContentView. |
| getContentViewCore().getContainerView().addView( |
| mSadTabView, new FrameLayout.LayoutParams( |
| LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); |
| notifyContentChanged(); |
| } |
| FullscreenManager fullscreenManager = getFullscreenManager(); |
| if (fullscreenManager != null) { |
| fullscreenManager.setPositionsForTabToNonFullscreen(); |
| } |
| } |
| |
| /** |
| * Removes the sad tab view if present. |
| */ |
| private void removeSadTabIfPresent() { |
| if (isShowingSadTab()) { |
| getContentViewCore().getContainerView().removeView(mSadTabView); |
| notifyContentChanged(); |
| } |
| mSadTabView = null; |
| } |
| |
| /** |
| * Removes any existing sad tab view and shows it again. This "reloads" the tab without |
| * going through any formal loading logic. |
| */ |
| @VisibleForTesting |
| public void reloadSadTabForTesting() { |
| removeSadTabIfPresent(); |
| showSadTab(); |
| } |
| |
| /** |
| * @return Whether or not the sad tab is showing. |
| */ |
| public boolean isShowingSadTab() { |
| return mSadTabView != null && getContentViewCore() != null |
| && mSadTabView.getParent() == getContentViewCore().getContainerView(); |
| } |
| |
| /** |
| * Calls onContentChanged on all TabObservers and updates accessibility visibility. |
| */ |
| private void notifyContentChanged() { |
| for (TabObserver observer : mObservers) observer.onContentChanged(this); |
| updateAccessibilityVisibility(); |
| } |
| |
| /** |
| * Cleans up all internal state, destroying any {@link NativePage} or {@link ContentViewCore} |
| * currently associated with this {@link Tab}. This also destroys the native counterpart |
| * to this class, which means that all subclasses should erase their native pointers after |
| * this method is called. Once this call is made this {@link Tab} should no longer be used. |
| */ |
| public void destroy() { |
| mIsInitialized = false; |
| // Update the title before destroying the tab. http://b/5783092 |
| updateTitle(); |
| |
| if (mTabUma != null) mTabUma.onDestroy(); |
| |
| for (TabObserver observer : mObservers) observer.onDestroyed(this); |
| mObservers.clear(); |
| |
| NativePage currentNativePage = mNativePage; |
| mNativePage = null; |
| destroyNativePageInternal(currentNativePage); |
| destroyContentViewCore(true); |
| |
| // Destroys the native tab after destroying the ContentView but before destroying the |
| // InfoBarContainer. The native tab should be destroyed before the infobar container as |
| // destroying the native tab cleanups up any remaining infobars. The infobar container |
| // expects all infobars to be cleaned up before its own destruction. |
| assert mNativeTabAndroid != 0; |
| nativeDestroy(mNativeTabAndroid); |
| assert mNativeTabAndroid == 0; |
| |
| if (mInfoBarContainer != null) { |
| mInfoBarContainer.destroy(); |
| mInfoBarContainer = null; |
| } |
| |
| mPreviousTopControlsOffsetY = Float.NaN; |
| mPreviousBottomControlsOffsetY = Float.NaN; |
| mPreviousContentOffsetY = Float.NaN; |
| |
| mNeedsReload = false; |
| } |
| |
| /** |
| * @return Whether or not this Tab has a live native component. This will be true prior to |
| * {@link #initializeNative()} being called or after {@link #destroy()}. |
| */ |
| public boolean isInitialized() { |
| return mIsInitialized; |
| } |
| |
| /** |
| * @return The URL associated with the tab. |
| */ |
| @CalledByNative |
| public String getUrl() { |
| String url = getWebContents() != null ? getWebContents().getUrl() : ""; |
| |
| // If we have a ContentView, or a NativePage, or the url is not empty, we have a WebContents |
| // so cache the WebContent's url. If not use the cached version. |
| if (getContentViewCore() != null || getNativePage() != null || !TextUtils.isEmpty(url)) { |
| mUrl = url; |
| } |
| |
| return mUrl != null ? mUrl : ""; |
| } |
| |
| /** |
| * @return The tab title. |
| */ |
| @CalledByNative |
| public String getTitle() { |
| if (mTitle == null) updateTitle(); |
| return mTitle; |
| } |
| |
| void updateTitle() { |
| if (isFrozen()) return; |
| |
| // When restoring the tabs, the title will no longer be populated, so request it from the |
| // ContentViewCore or NativePage (if present). |
| String title = ""; |
| if (mNativePage != null) { |
| title = mNativePage.getTitle(); |
| } else if (getWebContents() != null) { |
| title = getWebContents().getTitle(); |
| } |
| updateTitle(title); |
| } |
| |
| /** |
| * Cache the title for the current page. |
| * |
| * {@link ContentViewClient#onUpdateTitle} is unreliable, particularly for navigating backwards |
| * and forwards in the history stack, so pull the correct title whenever the page changes. |
| * onUpdateTitle is only called when the title of a navigation entry changes. When the user goes |
| * back a page the navigation entry exists with the correct title, thus the title is not |
| * actually changed, and no notification is sent. |
| * @param title Title of the page. |
| */ |
| void updateTitle(String title) { |
| if (TextUtils.equals(mTitle, title)) return; |
| |
| mIsTabStateDirty = true; |
| mTitle = title; |
| mIsTitleDirectionRtl = LocalizationUtils.getFirstStrongCharacterDirection(title) |
| == LocalizationUtils.RIGHT_TO_LEFT; |
| notifyPageTitleChanged(); |
| } |
| |
| private void notifyPageTitleChanged() { |
| RewindableIterator<TabObserver> observers = getTabObservers(); |
| while (observers.hasNext()) { |
| observers.next().onTitleUpdated(this); |
| } |
| } |
| |
| /** |
| * Notify the observers that the load progress has changed. |
| * @param progress The current percentage of progress. |
| */ |
| protected void notifyLoadProgress(int progress) { |
| for (TabObserver observer : mObservers) observer.onLoadProgressChanged(Tab.this, progress); |
| } |
| |
| private void notifyFaviconChanged() { |
| RewindableIterator<TabObserver> observers = getTabObservers(); |
| while (observers.hasNext()) { |
| observers.next().onFaviconUpdated(this, null); |
| } |
| } |
| |
| /** |
| * @return True if the tab title should be displayed from right to left. |
| */ |
| public boolean isTitleDirectionRtl() { |
| return mIsTitleDirectionRtl; |
| } |
| |
| /** |
| * @return The bitmap of the favicon scaled to 16x16dp. null if no favicon |
| * is specified or it requires the default favicon. |
| */ |
| public Bitmap getFavicon() { |
| // If we have no content or a native page, return null. |
| if (getContentViewCore() == null) return null; |
| |
| // Use the cached favicon only if the page wasn't changed. |
| if (mFavicon != null && mFaviconUrl != null && mFaviconUrl.equals(getUrl())) { |
| return mFavicon; |
| } |
| |
| return nativeGetFavicon(mNativeTabAndroid); |
| } |
| |
| /** |
| * Loads the tab if it's not loaded (e.g. because it was killed in background). |
| * This will trigger a regular load for tabs with pending lazy first load (tabs opened in |
| * background on low-memory devices). |
| * @return true iff the Tab handled the request. |
| */ |
| @CalledByNative |
| public boolean loadIfNeeded() { |
| if (getActivity() == null) { |
| Log.e(TAG, "Tab couldn't be loaded because Context was null."); |
| return false; |
| } |
| |
| if (mPendingLoadParams != null) { |
| assert isFrozen(); |
| initContentViewCore(WebContentsFactory.createWebContents(isIncognito(), isHidden())); |
| loadUrl(mPendingLoadParams); |
| mPendingLoadParams = null; |
| return true; |
| } |
| |
| restoreIfNeeded(); |
| return true; |
| } |
| |
| /** |
| * Loads a tab that was already loaded but since then was lost. This happens either when we |
| * unfreeze the tab from serialized state or when we reload a tab that crashed. In both cases |
| * the load codepath is the same (run in loadIfNecessary()) and the same caching policies of |
| * history load are used. |
| */ |
| private final void restoreIfNeeded() { |
| try { |
| TraceEvent.begin("Tab.restoreIfNeeded"); |
| if (isFrozen() && mFrozenContentsState != null) { |
| // Restore is needed for a tab that is loaded for the first time. WebContents will |
| // be restored from a saved state. |
| unfreezeContents(); |
| } else if (mNeedsReload) { |
| // Restore is needed for a tab that was previously loaded, but its renderer was |
| // killed by the oom killer. |
| mNeedsReload = false; |
| requestRestoreLoad(); |
| } else { |
| // No restore needed. |
| return; |
| } |
| |
| loadIfNecessary(); |
| mIsBeingRestored = true; |
| if (mTabUma != null) mTabUma.onRestoreStarted(); |
| } finally { |
| TraceEvent.end("Tab.restoreIfNeeded"); |
| } |
| } |
| |
| /** |
| * Issues a fake notification about the renderer being killed. |
| * |
| * @param wasOomProtected True if the renderer was protected from the OS out-of-memory killer |
| * (e.g. renderer for the currently selected tab) |
| */ |
| @VisibleForTesting |
| public void simulateRendererKilledForTesting(boolean wasOomProtected) { |
| if (mWebContentsObserver != null) { |
| mWebContentsObserver.renderProcessGone(wasOomProtected); |
| } |
| } |
| |
| /** |
| * Restores the WebContents from its saved state. This should only be called if the tab is |
| * frozen with a saved TabState, and NOT if it was frozen for a lazy load. |
| * @return Whether or not the restoration was successful. |
| */ |
| protected boolean unfreezeContents() { |
| try { |
| TraceEvent.begin("Tab.unfreezeContents"); |
| assert mFrozenContentsState != null; |
| assert getContentViewCore() == null; |
| |
| WebContents webContents = |
| mFrozenContentsState.restoreContentsFromByteBuffer(isHidden()); |
| if (webContents == null) { |
| // State restore failed, just create a new empty web contents as that is the best |
| // that can be done at this point. TODO(jcivelli) http://b/5910521 - we should show |
| // an error page instead of a blank page in that case (and the last loaded URL). |
| webContents = WebContentsFactory.createWebContents(isIncognito(), isHidden()); |
| mTabUma = new TabUma(TabCreationState.FROZEN_ON_RESTORE_FAILED); |
| mFailedToRestore = true; |
| } |
| |
| mFrozenContentsState = null; |
| initContentViewCore(webContents); |
| |
| if (mFailedToRestore) { |
| String url = TextUtils.isEmpty(mUrl) ? UrlConstants.NTP_URL : mUrl; |
| loadUrl(new LoadUrlParams(url, PageTransition.GENERATED)); |
| } |
| return !mFailedToRestore; |
| } finally { |
| TraceEvent.end("Tab.unfreezeContents"); |
| } |
| } |
| |
| /** |
| * @return Whether the unfreeze attempt from a saved tab state failed. |
| */ |
| public boolean didFailToRestore() { |
| return mFailedToRestore; |
| } |
| |
| /** |
| * @return Whether or not the tab is hidden. |
| */ |
| public boolean isHidden() { |
| return mIsHidden; |
| } |
| |
| /** |
| * @return Whether the tab can currently be interacted with by the user. This requires the |
| * view owned by the Tab to be visible and in a state where the user can interact with |
| * it (i.e. not in something like the phone tab switcher). |
| */ |
| @CalledByNative |
| public boolean isUserInteractable() { |
| return !mIsHidden && ViewCompat.isAttachedToWindow(getView()); |
| } |
| |
| /** |
| * @return Whether or not the tab is in the closing process. |
| */ |
| public boolean isClosing() { |
| return mIsClosing; |
| } |
| |
| /** |
| * @param closing Whether or not the tab is in the closing process. |
| */ |
| public void setClosing(boolean closing) { |
| mIsClosing = closing; |
| |
| for (TabObserver observer : mObservers) observer.onClosingStateChanged(this, closing); |
| } |
| |
| /** |
| * @return Whether the Tab needs to be reloaded. {@see #mNeedsReload} |
| */ |
| public boolean needsReload() { |
| return mNeedsReload; |
| } |
| |
| /** |
| * Set whether the Tab needs to be reloaded. {@see #mNeedsReload} |
| */ |
| protected void setNeedsReload(boolean needsReload) { |
| mNeedsReload = needsReload; |
| } |
| |
| /** |
| * @return true iff the tab is loading and an interstitial page is not showing. |
| */ |
| public boolean isLoading() { |
| return mIsLoading && !isShowingInterstitialPage(); |
| } |
| |
| /** |
| * @return true iff the tab is performing a restore page load. |
| */ |
| public boolean isBeingRestored() { |
| return mIsBeingRestored; |
| } |
| |
| /** |
| * @return The id of the tab that caused this tab to be opened. |
| */ |
| public int getParentId() { |
| return mParentId; |
| } |
| |
| /** |
| * @return Whether the tab should be grouped with its parent tab (true by default). |
| */ |
| public boolean isGroupedWithParent() { |
| return mGroupedWithParent; |
| } |
| |
| /** |
| * Sets whether the tab should be grouped with its parent tab. |
| * |
| * @param groupedWithParent The new value. |
| * @see #isGroupedWithParent |
| */ |
| public void setGroupedWithParent(boolean groupedWithParent) { |
| mGroupedWithParent = groupedWithParent; |
| } |
| |
| private void destroyNativePageInternal(NativePage nativePage) { |
| if (nativePage == null) return; |
| assert nativePage != mNativePage : "Attempting to destroy active page."; |
| |
| nativePage.destroy(); |
| } |
| |
| /** |
| * Called when the background color for the content changes. |
| * @param color The current for the background. |
| */ |
| protected void onBackgroundColorChanged(int color) { |
| for (TabObserver observer : mObservers) observer.onBackgroundColorChanged(this, color); |
| } |
| |
| /** |
| * Destroys the current {@link ContentViewCore}. |
| * @param deleteNativeWebContents Whether or not to delete the native WebContents pointer. |
| */ |
| private final void destroyContentViewCore(boolean deleteNativeWebContents) { |
| if (mContentViewCore == null) return; |
| |
| mContentViewCore.getContainerView().setOnHierarchyChangeListener(null); |
| mContentViewCore.getContainerView().setOnSystemUiVisibilityChangeListener(null); |
| if (mGestureStateListener != null) { |
| mContentViewCore.removeGestureStateListener(mGestureStateListener); |
| } |
| |
| if (mInfoBarContainer != null && mInfoBarContainer.getParent() != null) { |
| mInfoBarContainer.removeFromParentView(); |
| mInfoBarContainer.setContentViewCore(null); |
| } |
| if (mSwipeRefreshHandler != null) { |
| mSwipeRefreshHandler.destroy(); |
| mSwipeRefreshHandler = null; |
| } |
| mContentView = null; |
| mContentViewCore.destroy(); |
| mContentViewCore = null; |
| |
| mWebContentsDelegate = null; |
| |
| if (mWebContentsObserver != null) { |
| mWebContentsObserver.destroy(); |
| mWebContentsObserver = null; |
| } |
| |
| assert mNativeTabAndroid != 0; |
| nativeDestroyWebContents(mNativeTabAndroid, deleteNativeWebContents); |
| } |
| |
| /** |
| * @return The {@link WindowAndroid} associated with this {@link Tab}. |
| */ |
| public WindowAndroid getWindowAndroid() { |
| return mWindowAndroid; |
| } |
| |
| /** |
| * @return The current {@link TabWebContentsDelegateAndroid} instance. |
| */ |
| public TabWebContentsDelegateAndroid getTabWebContentsDelegateAndroid() { |
| return mWebContentsDelegate; |
| } |
| |
| @CalledByNative |
| protected void onFaviconAvailable(Bitmap icon) { |
| if (icon == null) return; |
| String url = getUrl(); |
| boolean pageUrlChanged = !url.equals(mFaviconUrl); |
| // This method will be called multiple times if the page has more than one favicon. |
| // we are trying to use the 16x16 DP icon here, Bitmap.createScaledBitmap will return |
| // the origin bitmap if it is already 16x16 DP. |
| if (pageUrlChanged || (icon.getWidth() == mIdealFaviconSize |
| && icon.getHeight() == mIdealFaviconSize)) { |
| mFavicon = Bitmap.createScaledBitmap(icon, mIdealFaviconSize, mIdealFaviconSize, true); |
| mFaviconUrl = url; |
| } |
| |
| for (TabObserver observer : mObservers) observer.onFaviconUpdated(this, icon); |
| } |
| /** |
| * Called when the navigation entry containing the history item changed, |
| * for example because of a scroll offset or form field change. |
| */ |
| @CalledByNative |
| private void onNavEntryChanged() { |
| mIsTabStateDirty = true; |
| } |
| |
| /** |
| * Returns the SnackbarManager for the activity that owns this Tab, if any. May |
| * return null. |
| */ |
| public SnackbarManager getSnackbarManager() { |
| if (getActivity() == null) return null; |
| return getActivity().getSnackbarManager(); |
| } |
| |
| /** |
| * @return The native pointer representing the native side of this {@link Tab} object. |
| */ |
| @CalledByNative |
| private long getNativePtr() { |
| return mNativeTabAndroid; |
| } |
| |
| /** This is currently called when committing a pre-rendered page. */ |
| @VisibleForTesting |
| @CalledByNative |
| public void swapWebContents( |
| WebContents webContents, boolean didStartLoad, boolean didFinishLoad) { |
| ContentViewCore cvc = createContentViewCore(webContents); |
| swapContentViewCore(cvc, false, didStartLoad, didFinishLoad); |
| } |
| |
| /** |
| * Called to swap out the current view with the one passed in. |
| * |
| * @param newContentViewCore The content view that should be swapped into the tab. |
| * @param deleteOldNativeWebContents Whether to delete the native web |
| * contents of old view. |
| * @param didStartLoad Whether |
| * WebContentsObserver::DidStartProvisionalLoadForFrame() has |
| * already been called. |
| * @param didFinishLoad Whether WebContentsObserver::DidFinishLoad() has |
| * already been called. |
| */ |
| public void swapContentViewCore(ContentViewCore newContentViewCore, |
| boolean deleteOldNativeWebContents, boolean didStartLoad, boolean didFinishLoad) { |
| int originalWidth = 0; |
| int originalHeight = 0; |
| if (mContentViewCore != null) { |
| originalWidth = mContentViewCore.getViewportWidthPix(); |
| originalHeight = mContentViewCore.getViewportHeightPix(); |
| mContentViewCore.onHide(); |
| } |
| |
| Rect bounds = new Rect(); |
| if (originalWidth == 0 && originalHeight == 0) { |
| bounds = ExternalPrerenderHandler.estimateContentSize( |
| (Application) getApplicationContext(), false); |
| originalWidth = bounds.right - bounds.left; |
| originalHeight = bounds.bottom - bounds.top; |
| } |
| |
| destroyContentViewCore(deleteOldNativeWebContents); |
| NativePage previousNativePage = mNativePage; |
| mNativePage = null; |
| // Size of the new ContentViewCore is zero at this point. If we don't call onSizeChanged(), |
| // next onShow() call would send a resize message with the current ContentViewCore size |
| // (zero) to the renderer process, although the new size will be set soon. |
| // However, this size fluttering may confuse Blink and rendered result can be broken |
| // (see http://crbug.com/340987). |
| newContentViewCore.onSizeChanged(originalWidth, originalHeight, 0, 0); |
| if (!bounds.isEmpty()) { |
| newContentViewCore.onPhysicalBackingSizeChanged(bounds.right, bounds.bottom); |
| } |
| newContentViewCore.onShow(); |
| setContentViewCore(newContentViewCore); |
| |
| mContentViewCore.attachImeAdapter(); |
| |
| // If the URL has already committed (e.g. prerendering), tell process management logic that |
| // it can rely on the process visibility signal for binding management. |
| // TODO: Call ChildProcessLauncher#determinedVisibility() at a more intuitive time. |
| // See crbug.com/537671 |
| if (!mContentViewCore.getWebContents().getLastCommittedUrl().equals("")) { |
| ChildProcessLauncher.determinedVisibility(mContentViewCore.getCurrentRenderProcessId()); |
| } |
| |
| destroyNativePageInternal(previousNativePage); |
| for (TabObserver observer : mObservers) { |
| observer.onWebContentsSwapped(this, didStartLoad, didFinishLoad); |
| } |
| } |
| |
| @CalledByNative |
| private void clearNativePtr() { |
| assert mNativeTabAndroid != 0; |
| mNativeTabAndroid = 0; |
| } |
| |
| @CalledByNative |
| private void setNativePtr(long nativePtr) { |
| assert mNativeTabAndroid == 0; |
| mNativeTabAndroid = nativePtr; |
| } |
| |
| /** |
| * @return Whether the TabState representing this Tab has been updated. |
| */ |
| public boolean isTabStateDirty() { |
| return mIsTabStateDirty; |
| } |
| |
| /** |
| * Set whether the TabState representing this Tab has been updated. |
| * @param isDirty Whether the Tab's state has changed. |
| */ |
| public void setIsTabStateDirty(boolean isDirty) { |
| mIsTabStateDirty = isDirty; |
| } |
| |
| /** |
| * @return Whether the Tab should be preserved in Android's Recents list when users hit "back". |
| */ |
| public boolean shouldPreserve() { |
| return mShouldPreserve; |
| } |
| |
| /** |
| * Sets whether the Tab should be preserved in Android's Recents list when users hit "back". |
| * @param preserve Whether the tab should be preserved. |
| */ |
| public void setShouldPreserve(boolean preserve) { |
| mShouldPreserve = preserve; |
| } |
| |
| /** |
| * @return Whether there are pending {@link LoadUrlParams} associated with the tab. This |
| * indicates the tab was created for lazy load. |
| */ |
| public boolean hasPendingLoadParams() { |
| return mPendingLoadParams != null; |
| } |
| |
| /** |
| * @return Parameters that should be used for a lazily loaded Tab. May be null. |
| */ |
| private LoadUrlParams getPendingLoadParams() { |
| return mPendingLoadParams; |
| } |
| |
| /** |
| * @param params Parameters that should be used for a lazily loaded Tab. |
| */ |
| private void setPendingLoadParams(LoadUrlParams params) { |
| mPendingLoadParams = params; |
| mUrl = params.getUrl(); |
| } |
| |
| /** |
| * @see #setAppAssociatedWith(String) for more information. |
| * TODO(aurimas): investigate reducing the visibility of this method after TabModel refactoring. |
| * |
| * @return The id of the application associated with that tab (null if not |
| * associated with an app). |
| */ |
| public String getAppAssociatedWith() { |
| return mAppAssociatedWith; |
| } |
| |
| /** |
| * Associates this tab with the external app with the specified id. Once a Tab is associated |
| * with an app, it is reused when a new page is opened from that app (unless the user typed in |
| * the location bar or in the page, in which case the tab is dissociated from any app) |
| * TODO(aurimas): investigate reducing the visibility of this method after TabModel refactoring. |
| * |
| * @param appId The ID of application associated with the tab. |
| */ |
| public void setAppAssociatedWith(String appId) { |
| mAppAssociatedWith = appId; |
| } |
| |
| /** |
| * @return See {@link #mTimestampMillis}. |
| */ |
| private long getTimestampMillis() { |
| return mTimestampMillis; |
| } |
| |
| /** |
| * Restores a tab either frozen or from state. |
| * TODO(aurimas): investigate reducing the visibility of this method after TabModel refactoring. |
| */ |
| public void createHistoricalTab() { |
| if (!isFrozen()) { |
| nativeCreateHistoricalTab(mNativeTabAndroid); |
| } else if (mFrozenContentsState != null) { |
| mFrozenContentsState.createHistoricalTab(); |
| } |
| } |
| |
| /** |
| * @return The reason the Tab was launched. |
| */ |
| public TabLaunchType getLaunchType() { |
| return mLaunchType; |
| } |
| |
| /** |
| * @return true iff the tab doesn't hold a live page. This happens before initialize() and when |
| * the tab holds frozen WebContents state that is yet to be inflated. |
| */ |
| @VisibleForTesting |
| public boolean isFrozen() { |
| return getNativePage() == null && getContentViewCore() == null; |
| } |
| |
| /** |
| * @return An instance of a {@link FullscreenManager}. |
| */ |
| protected FullscreenManager getFullscreenManager() { |
| return mFullscreenManager; |
| } |
| |
| /** |
| * Called when offset values related with fullscreen functionality has been changed by the |
| * compositor. |
| * @param topControlsOffsetY The Y offset of the top controls in physical pixels. |
| * @param bottomControlsOffsetY The Y offset of the bottom controls in physical pixels. |
| * @param contentOffsetY The Y offset of the content in physical pixels. |
| * @param isNonFullscreenPage Whether a current page is non-fullscreen page or not. |
| */ |
| private void onOffsetsChanged( |
| float topControlsOffsetY, float bottomControlsOffsetY, float contentOffsetY, |
| boolean isNonFullscreenPage) { |
| mPreviousTopControlsOffsetY = topControlsOffsetY; |
| mPreviousBottomControlsOffsetY = bottomControlsOffsetY; |
| mPreviousContentOffsetY = contentOffsetY; |
| |
| if (mFullscreenManager == null) return; |
| if (isNonFullscreenPage || isNativePage()) { |
| mFullscreenManager.setPositionsForTabToNonFullscreen(); |
| } else { |
| mFullscreenManager.setPositionsForTab(topControlsOffsetY, bottomControlsOffsetY, |
| contentOffsetY); |
| } |
| TabModelImpl.setActualTabSwitchLatencyMetricRequired(); |
| } |
| |
| /** |
| * Push state about whether or not the browser controls can show or hide to the renderer. |
| */ |
| public void updateFullscreenEnabledState() { |
| if (isFrozen()) return; |
| |
| updateBrowserControlsState( |
| getBrowserControlsStateConstraints(), BrowserControlsState.BOTH, true); |
| |
| if (getContentViewCore() != null && mFullscreenManager != null) { |
| getContentViewCore().updateMultiTouchZoomSupport( |
| !mFullscreenManager.getPersistentFullscreenMode()); |
| } |
| } |
| |
| /** |
| * Updates the browser controls state for this tab. As these values are set at the renderer |
| * level, there is potential for this impacting other tabs that might share the same |
| * process. |
| * |
| * @param constraints The constraints that determine whether the controls can be shown |
| * or hidden at all. |
| * @param current The desired current state for the controls. Pass |
| * {@link BrowserControlsState#BOTH} to preserve the current position. |
| * @param animate Whether the controls should animate to the specified ending condition or |
| * should jump immediately. |
| */ |
| protected void updateBrowserControlsState( |
| @BrowserControlsStateEnum int constraints, |
| @BrowserControlsStateEnum int current, boolean animate) { |
| if (mNativeTabAndroid == 0) return; |
| nativeUpdateBrowserControlsState(mNativeTabAndroid, constraints, current, animate); |
| } |
| |
| /** |
| * Updates the browser controls state for this tab. As these values are set at the renderer |
| * level, there is potential for this impacting other tabs that might share the same |
| * process. |
| * |
| * @param current The desired current state for the controls. Pass |
| * {@link BrowserControlsState#BOTH} to preserve the current position. |
| * @param animate Whether the controls should animate to the specified ending condition or |
| * should jump immediately. |
| */ |
| public void updateBrowserControlsState(int current, boolean animate) { |
| int constraints = getBrowserControlsStateConstraints(); |
| // Do nothing if current and constraints conflict to avoid error in |
| // renderer. |
| if ((constraints == BrowserControlsState.HIDDEN && current == BrowserControlsState.SHOWN) |
| || (constraints == BrowserControlsState.SHOWN |
| && current == BrowserControlsState.HIDDEN)) { |
| return; |
| } |
| updateBrowserControlsState(getBrowserControlsStateConstraints(), current, animate); |
| } |
| |
| /** |
| * @return Whether hiding browser controls is enabled or not. |
| */ |
| private boolean isHidingBrowserControlsEnabled() { |
| return mBrowserControlsVisibilityDelegate.isHidingBrowserControlsEnabled(); |
| } |
| |
| /** |
| * Performs any subclass-specific tasks when the Tab crashes. |
| */ |
| void handleTabCrash() { |
| mIsLoading = false; |
| mIsBeingRestored = false; |
| |
| if (mTabUma != null) mTabUma.onRendererCrashed(); |
| } |
| |
| /** |
| * @return Whether showing browser controls is enabled or not. |
| */ |
| public boolean isShowingBrowserControlsEnabled() { |
| return mBrowserControlsVisibilityDelegate.isShowingBrowserControlsEnabled(); |
| } |
| |
| /** |
| * @return The current visibility constraints for the display of browser controls. |
| * {@link BrowserControlsState} defines the valid return options. |
| */ |
| @BrowserControlsStateEnum |
| public int getBrowserControlsStateConstraints() { |
| int constraints = BrowserControlsState.BOTH; |
| if (!isShowingBrowserControlsEnabled()) { |
| constraints = BrowserControlsState.HIDDEN; |
| } else if (!isHidingBrowserControlsEnabled()) { |
| constraints = BrowserControlsState.SHOWN; |
| } |
| return constraints; |
| } |
| |
| /** |
| * @param manager The fullscreen manager that should be notified of changes to this tab (if |
| * set to null, no more updates will come from this tab). |
| */ |
| public void setFullscreenManager(FullscreenManager manager) { |
| mFullscreenManager = manager; |
| if (mFullscreenManager != null) { |
| boolean topOffsetsInitialized = !Float.isNaN(mPreviousTopControlsOffsetY) |
| && !Float.isNaN(mPreviousContentOffsetY); |
| boolean bottomOffsetsInitialized = |
| !Float.isNaN(mPreviousBottomControlsOffsetY); |
| boolean isChromeHomeEnabled = FeatureUtilities.isChromeHomeEnabled(); |
| |
| // Make sure the dominant control offsets have been set. |
| if ((!topOffsetsInitialized && !isChromeHomeEnabled) |
| || (!bottomOffsetsInitialized && isChromeHomeEnabled)) { |
| mFullscreenManager.setPositionsForTabToNonFullscreen(); |
| } else { |
| mFullscreenManager.setPositionsForTab(mPreviousTopControlsOffsetY, |
| mPreviousBottomControlsOffsetY, |
| mPreviousContentOffsetY); |
| } |
| updateFullscreenEnabledState(); |
| } |
| } |
| |
| /** |
| * Add a new navigation entry for the current URL and page title. |
| */ |
| void pushNativePageStateToNavigationEntry() { |
| assert mNativeTabAndroid != 0 && getNativePage() != null; |
| nativeSetActiveNavigationEntryTitleForUrl(mNativeTabAndroid, getNativePage().getUrl(), |
| getNativePage().getTitle()); |
| } |
| |
| @Override |
| public void onChildViewRemoved(View parent, View child) { |
| FullscreenManager fullscreenManager = getFullscreenManager(); |
| if (fullscreenManager != null) { |
| fullscreenManager.updateContentViewChildrenState(); |
| } |
| } |
| |
| @Override |
| public void onChildViewAdded(View parent, View child) { |
| FullscreenManager fullscreenManager = getFullscreenManager(); |
| if (fullscreenManager != null) { |
| fullscreenManager.updateContentViewChildrenState(); |
| } |
| } |
| |
| @Override |
| public void onSystemUiVisibilityChange(int visibility) { |
| FullscreenManager fullscreenManager = getFullscreenManager(); |
| if (fullscreenManager != null) { |
| fullscreenManager.onContentViewSystemUiVisibilityChange(visibility); |
| } |
| } |
| |
| /** |
| * @return The ID of the bookmark associated with the current URL, or |
| * {@link #INVALID_BOOKMARK_ID} if no such bookmark exists. |
| */ |
| public long getBookmarkId() { |
| return isFrozen() ? INVALID_BOOKMARK_ID : nativeGetBookmarkId(mNativeTabAndroid, false); |
| } |
| |
| /** |
| * Same as getBookmarkId() but never returns ids for managed bookmarks, or any other bookmarks |
| * that can't be edited by the user. |
| */ |
| public long getUserBookmarkId() { |
| return isFrozen() ? INVALID_BOOKMARK_ID : nativeGetBookmarkId(mNativeTabAndroid, true); |
| } |
| |
| /** |
| * @return True if the offline page is opened. |
| */ |
| public boolean isOfflinePage() { |
| return isFrozen() ? false : nativeIsOfflinePage(mNativeTabAndroid); |
| } |
| |
| /** |
| * @return The offline page if tab currently displays it, null otherwise. |
| */ |
| public OfflinePageItem getOfflinePage() { |
| return isFrozen() ? null : nativeGetOfflinePage(mNativeTabAndroid); |
| } |
| |
| /** |
| * Shows the list of offline pages. This should only be hit when offline pages feature is |
| * enabled. |
| */ |
| @CalledByNative |
| public void showOfflinePages() { |
| // TODO(jianli): This is not currently used. Figure out what to do here. |
| // http://crbug.com/636574 |
| } |
| |
| /** |
| * @return Original url of the tab, which is the original url from DOMDistiller. |
| */ |
| public String getOriginalUrl() { |
| return DomDistillerUrlUtils.getOriginalUrlFromDistillerUrl(getUrl()); |
| } |
| |
| /** |
| * Request that this tab receive focus. Currently, this function requests focus for the main |
| * View (usually a ContentView). |
| */ |
| public void requestFocus() { |
| View view = getView(); |
| if (view != null) view.requestFocus(); |
| } |
| |
| @CalledByNative |
| protected void openNewTab(String url, String extraHeaders, ResourceRequestBody postData, |
| int disposition, boolean hasParent, boolean isRendererInitiated) { |
| if (isClosing()) return; |
| |
| boolean incognito = isIncognito(); |
| TabLaunchType tabLaunchType = TabLaunchType.FROM_LONGPRESS_FOREGROUND; |
| Tab parentTab = hasParent ? this : null; |
| |
| switch (disposition) { |
| case WindowOpenDisposition.NEW_WINDOW: // fall through |
| case WindowOpenDisposition.NEW_FOREGROUND_TAB: |
| break; |
| case WindowOpenDisposition.NEW_POPUP: // fall through |
| case WindowOpenDisposition.NEW_BACKGROUND_TAB: |
| tabLaunchType = TabLaunchType.FROM_LONGPRESS_BACKGROUND; |
| break; |
| case WindowOpenDisposition.OFF_THE_RECORD: |
| assert incognito; |
| incognito = true; |
| break; |
| default: |
| assert false; |
| } |
| |
| // If shouldIgnoreNewTab returns true, the intent is handled by another |
| // activity. As a result, don't launch a new tab to open the URL. If TabModelSelector |
| // is not accessible, then we can't open a new tab. |
| if (shouldIgnoreNewTab(url, incognito) || getTabModelSelector() == null) return; |
| |
| LoadUrlParams loadUrlParams = new LoadUrlParams(url); |
| loadUrlParams.setVerbatimHeaders(extraHeaders); |
| loadUrlParams.setPostData(postData); |
| loadUrlParams.setIsRendererInitiated(isRendererInitiated); |
| getTabModelSelector().openNewTab( |
| loadUrlParams, tabLaunchType, parentTab, incognito); |
| } |
| |
| /** |
| * @return True if the Tab should block the creation of new tabs via {@link #openNewTab}. |
| */ |
| private boolean shouldIgnoreNewTab(String url, boolean incognito) { |
| InterceptNavigationDelegateImpl delegate = getInterceptNavigationDelegate(); |
| return delegate != null && delegate.shouldIgnoreNewTab(url, incognito); |
| } |
| |
| /** |
| * See {@link #mInterceptNavigationDelegate}. |
| */ |
| public InterceptNavigationDelegateImpl getInterceptNavigationDelegate() { |
| return mInterceptNavigationDelegate; |
| } |
| |
| @VisibleForTesting |
| public AuthenticatorNavigationInterceptor getAuthenticatorHelper() { |
| return getInterceptNavigationDelegate().getAuthenticatorNavigationInterceptor(); |
| } |
| |
| /** |
| * See {@link #mInterceptNavigationDelegate}. |
| */ |
| @VisibleForTesting |
| protected void setInterceptNavigationDelegate(InterceptNavigationDelegateImpl delegate) { |
| mInterceptNavigationDelegate = delegate; |
| nativeSetInterceptNavigationDelegate(mNativeTabAndroid, delegate); |
| } |
| |
| /** |
| * @return the TabRedirectHandler for the tab. |
| */ |
| public TabRedirectHandler getTabRedirectHandler() { |
| return mTabRedirectHandler; |
| } |
| |
| /** |
| * Sets the TabRedirectHandler for the tab. |
| * |
| * @param tabRedirectHandler the TabRedirectHandler |
| */ |
| public void setTabRedirectHandler(TabRedirectHandler tabRedirectHandler) { |
| mTabRedirectHandler = tabRedirectHandler; |
| } |
| |
| /** |
| * @return the AppBannerManager. |
| */ |
| public AppBannerManager getAppBannerManager() { |
| return AppBannerManager.getAppBannerManagerForWebContents(getWebContents()); |
| } |
| |
| @VisibleForTesting |
| public boolean hasPrerenderedUrl(String url) { |
| return nativeHasPrerenderedUrl(mNativeTabAndroid, url); |
| } |
| |
| /** |
| * @return the UMA object for the tab. Note that this may be null in some |
| * cases. |
| */ |
| public TabUma getTabUma() { |
| return mTabUma; |
| } |
| |
| /** |
| * @return The most recently used rank for this tab in the given TabModel. |
| */ |
| private static int computeMRURank(Tab tab, TabModel model) { |
| final long tabLastShow = tab.getTabUma().getLastShownTimestamp(); |
| int mruRank = 0; |
| for (int i = 0; i < model.getCount(); i++) { |
| Tab otherTab = model.getTabAt(i); |
| if (otherTab != tab && otherTab.getTabUma() != null |
| && otherTab.getTabUma().getLastShownTimestamp() > tabLastShow) { |
| mruRank++; |
| } |
| } |
| return mruRank; |
| } |
| |
| /** |
| * Sets the Intent that can be fired to restart the Activity of this Tab's parent. |
| * Should only be called if the Tab was launched via a different Activity. |
| */ |
| public void setParentIntent(Intent parentIntent) { |
| mParentIntent = parentIntent; |
| } |
| |
| /** |
| * @return Intent that can be fired to restart the parent Activity. |
| */ |
| protected Intent getParentIntent() { |
| return mParentIntent; |
| } |
| |
| /** |
| * Creates a new, "frozen" tab from a saved state. This can be used for background tabs restored |
| * on cold start that should be loaded when switched to. initialize() needs to be called |
| * afterwards to complete the second level initialization. |
| */ |
| public static Tab createFrozenTabFromState( |
| int id, ChromeActivity activity, boolean incognito, |
| WindowAndroid nativeWindow, int parentId, TabState state) { |
| assert state != null; |
| return new Tab(id, parentId, incognito, activity, nativeWindow, |
| TabLaunchType.FROM_RESTORE, TabCreationState.FROZEN_ON_RESTORE, state); |
| } |
| |
| /** |
| * Update whether or not the current native tab and/or web contents are |
| * currently visible (from an accessibility perspective), or whether |
| * they're obscured by another view. |
| */ |
| public void updateAccessibilityVisibility() { |
| View view = getView(); |
| if (view != null) { |
| int importantForAccessibility = isObscuredByAnotherViewForAccessibility() |
| ? View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS |
| : View.IMPORTANT_FOR_ACCESSIBILITY_YES; |
| if (view.getImportantForAccessibility() != importantForAccessibility) { |
| view.setImportantForAccessibility(importantForAccessibility); |
| view.sendAccessibilityEvent( |
| AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); |
| } |
| } |
| |
| ContentViewCore cvc = getContentViewCore(); |
| if (cvc != null) { |
| boolean isWebContentObscured = isObscuredByAnotherViewForAccessibility() |
| || isShowingSadTab(); |
| cvc.setObscuredByAnotherView(isWebContentObscured); |
| } |
| } |
| |
| private boolean isObscuredByAnotherViewForAccessibility() { |
| ChromeActivity activity = getActivity(); |
| return activity != null && activity.isViewObscuringAllTabs(); |
| } |
| |
| /** |
| * Creates a new tab to be loaded lazily. This can be used for tabs opened in the background |
| * that should be loaded when switched to. initialize() needs to be called afterwards to |
| * complete the second level initialization. |
| */ |
| public static Tab createTabForLazyLoad(ChromeActivity activity, boolean incognito, |
| WindowAndroid nativeWindow, TabLaunchType type, int parentId, |
| LoadUrlParams loadUrlParams) { |
| Tab tab = new Tab( |
| INVALID_TAB_ID, parentId, incognito, activity, nativeWindow, type, |
| TabCreationState.FROZEN_FOR_LAZY_LOAD, null); |
| tab.setPendingLoadParams(loadUrlParams); |
| return tab; |
| } |
| |
| /** |
| * Creates a fresh tab. initialize() needs to be called afterwards to complete the second level |
| * initialization. |
| * @param initiallyHidden true iff the tab being created is initially in background |
| */ |
| public static Tab createLiveTab(int id, ChromeActivity activity, boolean incognito, |
| WindowAndroid nativeWindow, TabLaunchType type, int parentId, boolean initiallyHidden) { |
| return new Tab(id, parentId, incognito, activity, nativeWindow, type, initiallyHidden |
| ? TabCreationState.LIVE_IN_BACKGROUND |
| : TabCreationState.LIVE_IN_FOREGROUND, null); |
| } |
| |
| /** |
| * @return Whether the theme color for this tab is the default color. |
| */ |
| public boolean isDefaultThemeColor() { |
| return isNativePage() || mDefaultThemeColor == getThemeColor(); |
| } |
| |
| /** |
| * @return The default theme color for this tab. |
| */ |
| @VisibleForTesting |
| public int getDefaultThemeColor() { |
| return mDefaultThemeColor; |
| } |
| |
| /** |
| * @return Intent that tells Chrome to bring an Activity for a particular Tab back to the |
| * foreground, or null if this isn't possible. |
| */ |
| @Nullable |
| public static Intent createBringTabToFrontIntent(int tabId) { |
| // Iterate through all {@link CustomTab}s and check whether the given tabId belongs to a |
| // {@link CustomTab}. If so, return null as the client app's task cannot be foregrounded. |
| List<WeakReference<Activity>> list = ApplicationStatus.getRunningActivities(); |
| for (WeakReference<Activity> ref : list) { |
| Activity activity = ref.get(); |
| if (activity instanceof CustomTabActivity |
| && ((CustomTabActivity) activity).getActivityTab() != null |
| && tabId == ((CustomTabActivity) activity).getActivityTab().getId()) { |
| return null; |
| } |
| } |
| |
| String packageName = ContextUtils.getApplicationContext().getPackageName(); |
| Intent intent = new Intent(Intent.ACTION_MAIN); |
| intent.putExtra(Browser.EXTRA_APPLICATION_ID, packageName); |
| intent.putExtra(TabOpenType.BRING_TAB_TO_FRONT.name(), tabId); |
| intent.setPackage(packageName); |
| return intent; |
| } |
| |
| /** |
| * Check whether the context menu download should be intercepted. |
| * |
| * @param url URL to be downloaded. |
| * @return whether the download should be intercepted. |
| */ |
| protected boolean shouldInterceptContextMenuDownload(String url) { |
| return mDownloadDelegate.shouldInterceptContextMenuDownload(url); |
| } |
| |
| void handleRendererUnresponsive() { |
| mIsRendererUnresponsive = true; |
| if (mFullscreenManager == null) return; |
| |
| mFullscreenManager.setPositionsForTabToNonFullscreen(); |
| updateBrowserControlsState(BrowserControlsState.SHOWN, false); |
| } |
| |
| void handleRendererResponsive() { |
| mIsRendererUnresponsive = false; |
| if (mFullscreenManager == null) return; |
| updateFullscreenEnabledState(); |
| } |
| |
| /** |
| * @return Whether the renderer is currently unresponsive. |
| */ |
| protected boolean isRendererUnresponsive() { |
| return mIsRendererUnresponsive; |
| } |
| |
| /** |
| * Reset swipe-to-refresh handler. |
| */ |
| void resetSwipeRefreshHandler() { |
| // When the dialog is visible, keeping the refresh animation active |
| // in the background is distracting and unnecessary (and likely to |
| // jank when the dialog is shown). |
| if (mSwipeRefreshHandler != null) { |
| mSwipeRefreshHandler.reset(); |
| } |
| } |
| |
| /** |
| * Stop swipe-to-refresh animation. |
| */ |
| void stopSwipeRefreshHandler() { |
| if (mSwipeRefreshHandler != null) { |
| mSwipeRefreshHandler.didStopRefreshing(); |
| } |
| } |
| |
| /** |
| * Set whether closing this Tab should return the user to the app that spawned Chrome. |
| */ |
| public void setIsAllowedToReturnToExternalApp(boolean state) { |
| mIsAllowedToReturnToExternalApp = state; |
| } |
| |
| /** |
| * @return Whether closing this Tab should return the user to the app that spawned Chrome. |
| */ |
| public boolean isAllowedToReturnToExternalApp() { |
| return mIsAllowedToReturnToExternalApp; |
| } |
| |
| /** |
| * @return Whether or not the tab was opened by an app other than Chrome. |
| */ |
| public boolean isCreatedForExternalApp() { |
| String packageName = ContextUtils.getApplicationContext().getPackageName(); |
| return getLaunchType() == TabLaunchType.FROM_EXTERNAL_APP |
| && !TextUtils.equals(getAppAssociatedWith(), packageName); |
| } |
| |
| private native void nativeInit(); |
| private native void nativeDestroy(long nativeTabAndroid); |
| private native void nativeInitWebContents(long nativeTabAndroid, boolean incognito, |
| WebContents webContents, TabWebContentsDelegateAndroid delegate, |
| ContextMenuPopulator contextMenuPopulator); |
| private native void nativeUpdateDelegates(long nativeTabAndroid, |
| TabWebContentsDelegateAndroid delegate, ContextMenuPopulator contextMenuPopulator); |
| private native void nativeDestroyWebContents(long nativeTabAndroid, boolean deleteNative); |
| private native Profile nativeGetProfileAndroid(long nativeTabAndroid); |
| private native int nativeLoadUrl(long nativeTabAndroid, String url, String extraHeaders, |
| ResourceRequestBody postData, int transition, String referrerUrl, int referrerPolicy, |
| boolean isRendererInitiated, boolean shoulReplaceCurrentEntry, |
| long intentReceivedTimestamp, boolean hasUserGesture); |
| private native void nativeSetActiveNavigationEntryTitleForUrl(long nativeTabAndroid, String url, |
| String title); |
| private native boolean nativePrint(long nativeTabAndroid); |
| private native Bitmap nativeGetFavicon(long nativeTabAndroid); |
| private native void nativeCreateHistoricalTab(long nativeTabAndroid); |
| private native void nativeUpdateBrowserControlsState( |
| long nativeTabAndroid, int constraints, int current, boolean animate); |
| private native void nativeLoadOriginalImage(long nativeTabAndroid); |
| private native long nativeGetBookmarkId(long nativeTabAndroid, boolean onlyEditable); |
| private native boolean nativeIsOfflinePage(long nativeTabAndroid); |
| private native OfflinePageItem nativeGetOfflinePage(long nativeTabAndroid); |
| private native void nativeSetInterceptNavigationDelegate(long nativeTabAndroid, |
| InterceptNavigationDelegate delegate); |
| private native void nativeAttachToTabContentManager(long nativeTabAndroid, |
| TabContentManager tabContentManager); |
| private native boolean nativeHasPrerenderedUrl(long nativeTabAndroid, String url); |
| } |