ui/android/java/src/org/chromium/ui/base/ViewAndroidDelegate.java - chromium/src - Git at Google

 // Copyright 2012 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.ui.base;

 import android.annotation.TargetApi;
 import android.content.ClipData;
 import android.graphics.Bitmap;
 import android.os.Build;
 import android.support.v4.view.MarginLayoutParamsCompat;
 import android.view.MotionEvent;
 import android.view.PointerIcon;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout.LayoutParams;
 import android.widget.ImageView;

 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.ObserverList;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.base.compat.ApiHelperForN;
 import org.chromium.blink_public.web.WebCursorInfoType;

 /**
  * Class to acquire, position, and remove anchor views from the implementing View.
  */
 @JNINamespace("ui")
 public class ViewAndroidDelegate {
     /**
      * The current container view. This view can be updated with
      * {@link #setContainerView()}.
      */
     protected ViewGroup mContainerView;

     // Temporary storage for use as a parameter of getLocationOnScreen().
     private int[] mTemporaryContainerLocation = new int[2];

     /**
      * Notifies the observer when container view is updated.
      */
     public interface ContainerViewObserver { void onUpdateContainerView(ViewGroup view); }

     private ObserverList<ContainerViewObserver> mContainerViewObservers = new ObserverList<>();

     /**
      * Create and return a basic implementation of {@link ViewAndroidDelegate}.
      * @param containerView {@link ViewGroup} to be used as a container view.
      * @return a new instance of {@link ViewAndroidDelegate}.
      */
     public static ViewAndroidDelegate createBasicDelegate(ViewGroup containerView) {
         return new ViewAndroidDelegate(containerView);
     }

     protected ViewAndroidDelegate(ViewGroup containerView) {
         mContainerView = containerView;
     }

     /**
      * Adds observer that needs notification when container view is updated. Note that
      * there is no {@code removObserver} since the added observers are all supposed to
      * go away with this object together.
      * @param observer {@link ContainerViewObserver} object. The object should have
      *        the lifetime same as this {@link ViewAndroidDelegate} to avoid gc issues.
      */
     public final void addObserver(ContainerViewObserver observer) {
         mContainerViewObservers.addObserver(observer);
     }

     /**
      * Updates the current container view to which this class delegates.
      *
      * <p>WARNING: This method can also be used to replace the existing container view,
      * but you should only do it if you have a very good reason to. Replacing the
      * container view has been designed to support fullscreen in the Webview so it
      * might not be appropriate for other use cases.
      *
      * <p>This method only performs a small part of replacing the container view and
      * embedders are responsible for:
      * <ul>
      *     <li>Disconnecting the old container view from all the references</li>
      *     <li>Updating the InternalAccessDelegate</li>
      *     <li>Reconciling the state with the new container view</li>
      *     <li>Tearing down and recreating the native GL rendering where appropriate</li>
      *     <li>etc.</li>
      * </ul>
      */
     public final void setContainerView(ViewGroup containerView) {
         ViewGroup oldContainerView = mContainerView;
         mContainerView = containerView;
         updateAnchorViews(oldContainerView);
         for (ContainerViewObserver observer : mContainerViewObservers) {
             observer.onUpdateContainerView(containerView);
         }
     }

     /**
      * Transfer existing anchor views from the old to the new container view. Called by
      * {@link setContainerView} only.
      * @param oldContainerView Old container view just replaced by a new one.
      */
     public void updateAnchorViews(ViewGroup oldContainerView) {}

     /**
      * @return An anchor view that can be used to anchor decoration views like Autofill popup.
      */
     @CalledByNative
     public View acquireView() {
         ViewGroup containerView = getContainerView();
         if (containerView == null || containerView.getParent() == null) return null;
         View anchorView = new View(containerView.getContext());
         containerView.addView(anchorView);
         return anchorView;
     }

     /**
      * Release given anchor view.
      * @param anchorView The anchor view that needs to be released.
      */
     @CalledByNative
     public void removeView(View anchorView) {
         ViewGroup containerView = getContainerView();
         if (containerView == null) return;
         containerView.removeView(anchorView);
     }

     /**
      * Set the anchor view to specified position and size (all units in px).
      * @param view The anchor view that needs to be positioned.
      * @param x X coordinate of the top left corner of the anchor view.
      * @param y Y coordinate of the top left corner of the anchor view.
      * @param width The width of the anchor view.
      * @param height The height of the anchor view.
      */
     @CalledByNative
     public void setViewPosition(
             View view, float x, float y, float width, float height, int leftMargin, int topMargin) {
         ViewGroup containerView = getContainerView();
         if (containerView == null) return;

         int widthInt = Math.round(width);
         int heightInt = Math.round(height);
         int startMargin;

         if (ApiCompatibilityUtils.isLayoutRtl(containerView)) {
             startMargin = containerView.getMeasuredWidth() - Math.round(width + x);
         } else {
             startMargin = leftMargin;
         }
         if (widthInt + startMargin > containerView.getWidth()) {
             widthInt = containerView.getWidth() - startMargin;
         }
         LayoutParams lp = new LayoutParams(widthInt, heightInt);
         MarginLayoutParamsCompat.setMarginStart(lp, startMargin);
         lp.topMargin = topMargin;
         view.setLayoutParams(lp);
     }

     /**
      * Drag the text out of current view.
      * @param text The dragged text.
      * @param shadowImage The shadow image for the dragged text.
      */
     @SuppressWarnings("deprecation")
     @TargetApi(Build.VERSION_CODES.N)
     @CalledByNative
     private boolean startDragAndDrop(String text, Bitmap shadowImage) {
         if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) return false;

         ViewGroup containerView = getContainerView();
         if (containerView == null) return false;

         ImageView imageView = new ImageView(containerView.getContext());
         imageView.setImageBitmap(shadowImage);
         imageView.layout(0, 0, shadowImage.getWidth(), shadowImage.getHeight());

         return ApiHelperForN.startDragAndDrop(containerView, ClipData.newPlainText(null, text),
                 new View.DragShadowBuilder(imageView), null, View.DRAG_FLAG_GLOBAL);
     }

     @VisibleForTesting
     @CalledByNative
     public void onCursorChangedToCustom(Bitmap customCursorBitmap, int hotspotX, int hotspotY) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             PointerIcon icon =
                     ApiHelperForN.createPointerIcon(customCursorBitmap, hotspotX, hotspotY);
             ApiHelperForN.setPointerIcon(getContainerView(), icon);
         }
     }

     @VisibleForTesting
     @CalledByNative
     public void onCursorChanged(int cursorType) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return;

         int pointerIconType = PointerIcon.TYPE_ARROW;
         switch (cursorType) {
             case WebCursorInfoType.NONE:
                 pointerIconType = PointerIcon.TYPE_NULL;
                 break;
             case WebCursorInfoType.POINTER:
                 pointerIconType = PointerIcon.TYPE_ARROW;
                 break;
             case WebCursorInfoType.CONTEXT_MENU:
                 pointerIconType = PointerIcon.TYPE_CONTEXT_MENU;
                 break;
             case WebCursorInfoType.HAND:
                 pointerIconType = PointerIcon.TYPE_HAND;
                 break;
             case WebCursorInfoType.HELP:
                 pointerIconType = PointerIcon.TYPE_HELP;
                 break;
             case WebCursorInfoType.WAIT:
                 pointerIconType = PointerIcon.TYPE_WAIT;
                 break;
             case WebCursorInfoType.CELL:
                 pointerIconType = PointerIcon.TYPE_CELL;
                 break;
             case WebCursorInfoType.CROSS:
                 pointerIconType = PointerIcon.TYPE_CROSSHAIR;
                 break;
             case WebCursorInfoType.I_BEAM:
                 pointerIconType = PointerIcon.TYPE_TEXT;
                 break;
             case WebCursorInfoType.VERTICAL_TEXT:
                 pointerIconType = PointerIcon.TYPE_VERTICAL_TEXT;
                 break;
             case WebCursorInfoType.ALIAS:
                 pointerIconType = PointerIcon.TYPE_ALIAS;
                 break;
             case WebCursorInfoType.COPY:
                 pointerIconType = PointerIcon.TYPE_COPY;
                 break;
             case WebCursorInfoType.NO_DROP:
                 pointerIconType = PointerIcon.TYPE_NO_DROP;
                 break;
             case WebCursorInfoType.COLUMN_RESIZE:
                 pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.ROW_RESIZE:
                 pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.NORTH_EAST_SOUTH_WEST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.NORTH_WEST_SOUTH_EAST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.ZOOM_IN:
                 pointerIconType = PointerIcon.TYPE_ZOOM_IN;
                 break;
             case WebCursorInfoType.ZOOM_OUT:
                 pointerIconType = PointerIcon.TYPE_ZOOM_OUT;
                 break;
             case WebCursorInfoType.GRAB:
                 pointerIconType = PointerIcon.TYPE_GRAB;
                 break;
             case WebCursorInfoType.GRABBING:
                 pointerIconType = PointerIcon.TYPE_GRABBING;
                 break;
             // TODO(jaebaek): set types correctly
             // after fixing http://crbug.com/584424.
             case WebCursorInfoType.EAST_WEST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.NORTH_SOUTH_RESIZE:
                 pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.EAST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.NORTH_RESIZE:
                 pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.NORTH_EAST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.NORTH_WEST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.SOUTH_RESIZE:
                 pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.SOUTH_EAST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.SOUTH_WEST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.WEST_RESIZE:
                 pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
                 break;
             case WebCursorInfoType.PROGRESS:
                 pointerIconType = PointerIcon.TYPE_WAIT;
                 break;
             case WebCursorInfoType.NOT_ALLOWED:
                 pointerIconType = PointerIcon.TYPE_NO_DROP;
                 break;
             case WebCursorInfoType.MOVE:
             case WebCursorInfoType.MIDDLE_PANNING:
                 pointerIconType = PointerIcon.TYPE_ALL_SCROLL;
                 break;
             case WebCursorInfoType.EAST_PANNING:
             case WebCursorInfoType.NORTH_PANNING:
             case WebCursorInfoType.NORTH_EAST_PANNING:
             case WebCursorInfoType.NORTH_WEST_PANNING:
             case WebCursorInfoType.SOUTH_PANNING:
             case WebCursorInfoType.SOUTH_EAST_PANNING:
             case WebCursorInfoType.SOUTH_WEST_PANNING:
             case WebCursorInfoType.WEST_PANNING:
                 assert false : "These pointer icon types are not supported";
                 break;
             case WebCursorInfoType.CUSTOM:
                 assert false : "onCursorChangedToCustom must be called instead";
                 break;
         }
         ViewGroup containerView = getContainerView();
         PointerIcon icon = PointerIcon.getSystemIcon(containerView.getContext(), pointerIconType);
         ApiHelperForN.setPointerIcon(containerView, icon);
     }

     /**
      * Called whenever the background color of the page changes as notified by Blink.
      * @param color The new ARGB color of the page background.
      */
     @CalledByNative
     public void onBackgroundColorChanged(int color) {}

     /**
      * Notify the client of the position of the top controls.
      * @param topControlsOffsetY The Y offset of the top controls in physical pixels.
      * @param topContentOffsetY The Y offset of the content in physical pixels.
      */
     @CalledByNative
     public void onTopControlsChanged(int topControlsOffsetY, int topContentOffsetY) {}

     /**
      * Notify the client of the position of the bottom controls.
      * @param bottomControlsOffsetY The Y offset of the bottom controls in physical pixels.
      * @param bottomContentOffsetY The Y offset of the content in physical pixels.
      */
     @CalledByNative
     public void onBottomControlsChanged(int bottomControlsOffsetY, int bottomContentOffsetY) {}

     /**
      * Returns the bottom system window inset in pixels. The system window inset represents the area
      * of a full-screen window that is partially or fully obscured by the status bar, navigation
      * bar, IME or other system windows.
      * @return The bottom system window inset.
      */
     @CalledByNative
     public int getSystemWindowInsetBottom() {
         return 0;
     }

     /**
      * @return container view that the anchor views are added to. May be null.
      */
     @CalledByNative
     public final ViewGroup getContainerView() {
         return mContainerView;
     }

     /**
      * Return the X location of our container view.
      */
     @CalledByNative
     private int getXLocationOfContainerViewInWindow() {
         ViewGroup container = getContainerView();
         if (container == null) return 0;

         container.getLocationInWindow(mTemporaryContainerLocation);
         return mTemporaryContainerLocation[0];
     }

     /**
      * Return the Y location of our container view.
      */
     @CalledByNative
     private int getYLocationOfContainerViewInWindow() {
         ViewGroup container = getContainerView();
         if (container == null) return 0;

         container.getLocationInWindow(mTemporaryContainerLocation);
         return mTemporaryContainerLocation[1];
     }

     /**
      * Return the X location of our container view on screen.
      */
     @CalledByNative
     private int getXLocationOnScreen() {
         ViewGroup container = getContainerView();
         if (container == null) return 0;

         container.getLocationOnScreen(mTemporaryContainerLocation);
         return mTemporaryContainerLocation[0];
     }

     /**
      * Return the Y location of our container view on screen.
      */
     @CalledByNative
     private int getYLocationOnScreen() {
         ViewGroup container = getContainerView();
         if (container == null) return 0;

         container.getLocationOnScreen(mTemporaryContainerLocation);
         return mTemporaryContainerLocation[1];
     }

     @CalledByNative
     private void requestDisallowInterceptTouchEvent() {
         ViewGroup container = getContainerView();
         if (container != null) container.requestDisallowInterceptTouchEvent(true);
     }

     @CalledByNative
     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     private void requestUnbufferedDispatch(MotionEvent event) {
         ViewGroup container = getContainerView();
         if (container != null) container.requestUnbufferedDispatch(event);
     }

     @CalledByNative
     private boolean hasFocus() {
         ViewGroup containerView = getContainerView();
         return containerView == null ? false : ViewUtils.hasFocus(containerView);
     }

     @CalledByNative
     private void requestFocus() {
         ViewGroup containerView = getContainerView();
         if (containerView != null) ViewUtils.requestFocus(containerView);
     }
 }
	// Copyright 2012 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.ui.base;

	import android.annotation.TargetApi;
	import android.content.ClipData;
	import android.graphics.Bitmap;
	import android.os.Build;
	import android.support.v4.view.MarginLayoutParamsCompat;
	import android.view.MotionEvent;
	import android.view.PointerIcon;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.FrameLayout.LayoutParams;
	import android.widget.ImageView;

	import org.chromium.base.ApiCompatibilityUtils;
	import org.chromium.base.ObserverList;
	import org.chromium.base.VisibleForTesting;
	import org.chromium.base.annotations.CalledByNative;
	import org.chromium.base.annotations.JNINamespace;
	import org.chromium.base.compat.ApiHelperForN;
	import org.chromium.blink_public.web.WebCursorInfoType;

	/**
	* Class to acquire, position, and remove anchor views from the implementing View.
	*/
	@JNINamespace("ui")
	public class ViewAndroidDelegate {
	/**
	* The current container view. This view can be updated with
	* {@link #setContainerView()}.
	*/
	protected ViewGroup mContainerView;

	// Temporary storage for use as a parameter of getLocationOnScreen().
	private int[] mTemporaryContainerLocation = new int[2];

	/**
	* Notifies the observer when container view is updated.
	*/
	public interface ContainerViewObserver { void onUpdateContainerView(ViewGroup view); }

	private ObserverList<ContainerViewObserver> mContainerViewObservers = new ObserverList<>();

	/**
	* Create and return a basic implementation of {@link ViewAndroidDelegate}.
	* @param containerView {@link ViewGroup} to be used as a container view.
	* @return a new instance of {@link ViewAndroidDelegate}.
	*/
	public static ViewAndroidDelegate createBasicDelegate(ViewGroup containerView) {
	return new ViewAndroidDelegate(containerView);
	}

	protected ViewAndroidDelegate(ViewGroup containerView) {
	mContainerView = containerView;
	}

	/**
	* Adds observer that needs notification when container view is updated. Note that
	* there is no {@code removObserver} since the added observers are all supposed to
	* go away with this object together.
	* @param observer {@link ContainerViewObserver} object. The object should have
	* the lifetime same as this {@link ViewAndroidDelegate} to avoid gc issues.
	*/
	public final void addObserver(ContainerViewObserver observer) {
	mContainerViewObservers.addObserver(observer);
	}

	/**
	* Updates the current container view to which this class delegates.
	*
	* <p>WARNING: This method can also be used to replace the existing container view,
	* but you should only do it if you have a very good reason to. Replacing the
	* container view has been designed to support fullscreen in the Webview so it
	* might not be appropriate for other use cases.
	*
	* <p>This method only performs a small part of replacing the container view and
	* embedders are responsible for:
	* <ul>
	* <li>Disconnecting the old container view from all the references</li>
	* <li>Updating the InternalAccessDelegate</li>
	* <li>Reconciling the state with the new container view</li>
	* <li>Tearing down and recreating the native GL rendering where appropriate</li>
	* <li>etc.</li>
	* </ul>
	*/
	public final void setContainerView(ViewGroup containerView) {
	ViewGroup oldContainerView = mContainerView;
	mContainerView = containerView;
	updateAnchorViews(oldContainerView);
	for (ContainerViewObserver observer : mContainerViewObservers) {
	observer.onUpdateContainerView(containerView);
	}
	}

	/**
	* Transfer existing anchor views from the old to the new container view. Called by
	* {@link setContainerView} only.
	* @param oldContainerView Old container view just replaced by a new one.
	*/
	public void updateAnchorViews(ViewGroup oldContainerView) {}

	/**
	* @return An anchor view that can be used to anchor decoration views like Autofill popup.
	*/
	@CalledByNative
	public View acquireView() {
	ViewGroup containerView = getContainerView();
	if (containerView == null \|\| containerView.getParent() == null) return null;
	View anchorView = new View(containerView.getContext());
	containerView.addView(anchorView);
	return anchorView;
	}

	/**
	* Release given anchor view.
	* @param anchorView The anchor view that needs to be released.
	*/
	@CalledByNative
	public void removeView(View anchorView) {
	ViewGroup containerView = getContainerView();
	if (containerView == null) return;
	containerView.removeView(anchorView);
	}

	/**
	* Set the anchor view to specified position and size (all units in px).
	* @param view The anchor view that needs to be positioned.
	* @param x X coordinate of the top left corner of the anchor view.
	* @param y Y coordinate of the top left corner of the anchor view.
	* @param width The width of the anchor view.
	* @param height The height of the anchor view.
	*/
	@CalledByNative
	public void setViewPosition(
	View view, float x, float y, float width, float height, int leftMargin, int topMargin) {
	ViewGroup containerView = getContainerView();
	if (containerView == null) return;

	int widthInt = Math.round(width);
	int heightInt = Math.round(height);
	int startMargin;

	if (ApiCompatibilityUtils.isLayoutRtl(containerView)) {
	startMargin = containerView.getMeasuredWidth() - Math.round(width + x);
	} else {
	startMargin = leftMargin;
	}
	if (widthInt + startMargin > containerView.getWidth()) {
	widthInt = containerView.getWidth() - startMargin;
	}
	LayoutParams lp = new LayoutParams(widthInt, heightInt);
	MarginLayoutParamsCompat.setMarginStart(lp, startMargin);
	lp.topMargin = topMargin;
	view.setLayoutParams(lp);
	}

	/**
	* Drag the text out of current view.
	* @param text The dragged text.
	* @param shadowImage The shadow image for the dragged text.
	*/
	@SuppressWarnings("deprecation")
	@TargetApi(Build.VERSION_CODES.N)
	@CalledByNative
	private boolean startDragAndDrop(String text, Bitmap shadowImage) {
	if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) return false;

	ViewGroup containerView = getContainerView();
	if (containerView == null) return false;

	ImageView imageView = new ImageView(containerView.getContext());
	imageView.setImageBitmap(shadowImage);
	imageView.layout(0, 0, shadowImage.getWidth(), shadowImage.getHeight());

	return ApiHelperForN.startDragAndDrop(containerView, ClipData.newPlainText(null, text),
	new View.DragShadowBuilder(imageView), null, View.DRAG_FLAG_GLOBAL);
	}

	@VisibleForTesting
	@CalledByNative
	public void onCursorChangedToCustom(Bitmap customCursorBitmap, int hotspotX, int hotspotY) {
	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
	PointerIcon icon =
	ApiHelperForN.createPointerIcon(customCursorBitmap, hotspotX, hotspotY);
	ApiHelperForN.setPointerIcon(getContainerView(), icon);
	}
	}

	@VisibleForTesting
	@CalledByNative
	public void onCursorChanged(int cursorType) {
	if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return;

	int pointerIconType = PointerIcon.TYPE_ARROW;
	switch (cursorType) {
	case WebCursorInfoType.NONE:
	pointerIconType = PointerIcon.TYPE_NULL;
	break;
	case WebCursorInfoType.POINTER:
	pointerIconType = PointerIcon.TYPE_ARROW;
	break;
	case WebCursorInfoType.CONTEXT_MENU:
	pointerIconType = PointerIcon.TYPE_CONTEXT_MENU;
	break;
	case WebCursorInfoType.HAND:
	pointerIconType = PointerIcon.TYPE_HAND;
	break;
	case WebCursorInfoType.HELP:
	pointerIconType = PointerIcon.TYPE_HELP;
	break;
	case WebCursorInfoType.WAIT:
	pointerIconType = PointerIcon.TYPE_WAIT;
	break;
	case WebCursorInfoType.CELL:
	pointerIconType = PointerIcon.TYPE_CELL;
	break;
	case WebCursorInfoType.CROSS:
	pointerIconType = PointerIcon.TYPE_CROSSHAIR;
	break;
	case WebCursorInfoType.I_BEAM:
	pointerIconType = PointerIcon.TYPE_TEXT;
	break;
	case WebCursorInfoType.VERTICAL_TEXT:
	pointerIconType = PointerIcon.TYPE_VERTICAL_TEXT;
	break;
	case WebCursorInfoType.ALIAS:
	pointerIconType = PointerIcon.TYPE_ALIAS;
	break;
	case WebCursorInfoType.COPY:
	pointerIconType = PointerIcon.TYPE_COPY;
	break;
	case WebCursorInfoType.NO_DROP:
	pointerIconType = PointerIcon.TYPE_NO_DROP;
	break;
	case WebCursorInfoType.COLUMN_RESIZE:
	pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.ROW_RESIZE:
	pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.NORTH_EAST_SOUTH_WEST_RESIZE:
	pointerIconType = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.NORTH_WEST_SOUTH_EAST_RESIZE:
	pointerIconType = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.ZOOM_IN:
	pointerIconType = PointerIcon.TYPE_ZOOM_IN;
	break;
	case WebCursorInfoType.ZOOM_OUT:
	pointerIconType = PointerIcon.TYPE_ZOOM_OUT;
	break;
	case WebCursorInfoType.GRAB:
	pointerIconType = PointerIcon.TYPE_GRAB;
	break;
	case WebCursorInfoType.GRABBING:
	pointerIconType = PointerIcon.TYPE_GRABBING;
	break;
	// TODO(jaebaek): set types correctly
	// after fixing http://crbug.com/584424.
	case WebCursorInfoType.EAST_WEST_RESIZE:
	pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.NORTH_SOUTH_RESIZE:
	pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.EAST_RESIZE:
	pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.NORTH_RESIZE:
	pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.NORTH_EAST_RESIZE:
	pointerIconType = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.NORTH_WEST_RESIZE:
	pointerIconType = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.SOUTH_RESIZE:
	pointerIconType = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.SOUTH_EAST_RESIZE:
	pointerIconType = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.SOUTH_WEST_RESIZE:
	pointerIconType = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.WEST_RESIZE:
	pointerIconType = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW;
	break;
	case WebCursorInfoType.PROGRESS:
	pointerIconType = PointerIcon.TYPE_WAIT;
	break;
	case WebCursorInfoType.NOT_ALLOWED:
	pointerIconType = PointerIcon.TYPE_NO_DROP;
	break;
	case WebCursorInfoType.MOVE:
	case WebCursorInfoType.MIDDLE_PANNING:
	pointerIconType = PointerIcon.TYPE_ALL_SCROLL;
	break;
	case WebCursorInfoType.EAST_PANNING:
	case WebCursorInfoType.NORTH_PANNING:
	case WebCursorInfoType.NORTH_EAST_PANNING:
	case WebCursorInfoType.NORTH_WEST_PANNING:
	case WebCursorInfoType.SOUTH_PANNING:
	case WebCursorInfoType.SOUTH_EAST_PANNING:
	case WebCursorInfoType.SOUTH_WEST_PANNING:
	case WebCursorInfoType.WEST_PANNING:
	assert false : "These pointer icon types are not supported";
	break;
	case WebCursorInfoType.CUSTOM:
	assert false : "onCursorChangedToCustom must be called instead";
	break;
	}
	ViewGroup containerView = getContainerView();
	PointerIcon icon = PointerIcon.getSystemIcon(containerView.getContext(), pointerIconType);
	ApiHelperForN.setPointerIcon(containerView, icon);
	}

	/**
	* Called whenever the background color of the page changes as notified by Blink.
	* @param color The new ARGB color of the page background.
	*/
	@CalledByNative
	public void onBackgroundColorChanged(int color) {}

	/**
	* Notify the client of the position of the top controls.
	* @param topControlsOffsetY The Y offset of the top controls in physical pixels.
	* @param topContentOffsetY The Y offset of the content in physical pixels.
	*/
	@CalledByNative
	public void onTopControlsChanged(int topControlsOffsetY, int topContentOffsetY) {}

	/**
	* Notify the client of the position of the bottom controls.
	* @param bottomControlsOffsetY The Y offset of the bottom controls in physical pixels.
	* @param bottomContentOffsetY The Y offset of the content in physical pixels.
	*/
	@CalledByNative
	public void onBottomControlsChanged(int bottomControlsOffsetY, int bottomContentOffsetY) {}

	/**
	* Returns the bottom system window inset in pixels. The system window inset represents the area
	* of a full-screen window that is partially or fully obscured by the status bar, navigation
	* bar, IME or other system windows.
	* @return The bottom system window inset.
	*/
	@CalledByNative
	public int getSystemWindowInsetBottom() {
	return 0;
	}

	/**
	* @return container view that the anchor views are added to. May be null.
	*/
	@CalledByNative
	public final ViewGroup getContainerView() {
	return mContainerView;
	}

	/**
	* Return the X location of our container view.
	*/
	@CalledByNative
	private int getXLocationOfContainerViewInWindow() {
	ViewGroup container = getContainerView();
	if (container == null) return 0;

	container.getLocationInWindow(mTemporaryContainerLocation);
	return mTemporaryContainerLocation[0];
	}

	/**
	* Return the Y location of our container view.
	*/
	@CalledByNative
	private int getYLocationOfContainerViewInWindow() {
	ViewGroup container = getContainerView();
	if (container == null) return 0;

	container.getLocationInWindow(mTemporaryContainerLocation);
	return mTemporaryContainerLocation[1];
	}

	/**
	* Return the X location of our container view on screen.
	*/
	@CalledByNative
	private int getXLocationOnScreen() {
	ViewGroup container = getContainerView();
	if (container == null) return 0;

	container.getLocationOnScreen(mTemporaryContainerLocation);
	return mTemporaryContainerLocation[0];
	}

	/**
	* Return the Y location of our container view on screen.
	*/
	@CalledByNative
	private int getYLocationOnScreen() {
	ViewGroup container = getContainerView();
	if (container == null) return 0;

	container.getLocationOnScreen(mTemporaryContainerLocation);
	return mTemporaryContainerLocation[1];
	}

	@CalledByNative
	private void requestDisallowInterceptTouchEvent() {
	ViewGroup container = getContainerView();
	if (container != null) container.requestDisallowInterceptTouchEvent(true);
	}

	@CalledByNative
	@TargetApi(Build.VERSION_CODES.LOLLIPOP)
	private void requestUnbufferedDispatch(MotionEvent event) {
	ViewGroup container = getContainerView();
	if (container != null) container.requestUnbufferedDispatch(event);
	}

	@CalledByNative
	private boolean hasFocus() {
	ViewGroup containerView = getContainerView();
	return containerView == null ? false : ViewUtils.hasFocus(containerView);
	}

	@CalledByNative
	private void requestFocus() {
	ViewGroup containerView = getContainerView();
	if (containerView != null) ViewUtils.requestFocus(containerView);
	}
	}