| // Copyright 2016 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. |
| |
| #ifndef CHROME_BROWSER_UI_JAVASCRIPT_DIALOGS_JAVASCRIPT_DIALOG_TAB_HELPER_H_ |
| #define CHROME_BROWSER_UI_JAVASCRIPT_DIALOGS_JAVASCRIPT_DIALOG_TAB_HELPER_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "chrome/browser/ui/browser_list_observer.h" |
| #include "chrome/browser/ui/javascript_dialogs/javascript_dialog.h" |
| #include "content/public/browser/javascript_dialog_manager.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "content/public/browser/web_contents_user_data.h" |
| |
| class JavaScriptDialogViews; |
| |
| // A class, attached to WebContentses in browser windows, that is the |
| // JavaScriptDialogManager for them and handles displaying their dialogs. |
| // |
| // This is the primary mechanism for implementing auto-dismissing dialogs, |
| // dialogs that close when the user switches away to a different tab. Because |
| // JavaScript dialogs are synchronous and block arbitrary sets of renderers, |
| // they cannot be made tab-modal. Therefore the next best option is to make them |
| // auto-closing, so that they never block the user's access to other renderers. |
| // |
| // See http://bit.ly/project-oldspice for more details. Note that only part |
| // one of that design is implemented. |
| class JavaScriptDialogTabHelper |
| : public content::JavaScriptDialogManager, |
| public content::WebContentsObserver, |
| public chrome::BrowserListObserver, |
| public content::WebContentsUserData<JavaScriptDialogTabHelper> { |
| public: |
| explicit JavaScriptDialogTabHelper(content::WebContents* web_contents); |
| ~JavaScriptDialogTabHelper() override; |
| |
| // JavaScriptDialogManager: |
| void RunJavaScriptDialog(content::WebContents* web_contents, |
| const GURL& origin_url, |
| content::JavaScriptMessageType message_type, |
| const base::string16& message_text, |
| const base::string16& default_prompt_text, |
| const DialogClosedCallback& callback, |
| bool* did_suppress_message) override; |
| void RunBeforeUnloadDialog(content::WebContents* web_contents, |
| bool is_reload, |
| const DialogClosedCallback& callback) override; |
| bool HandleJavaScriptDialog(content::WebContents* web_contents, |
| bool accept, |
| const base::string16* prompt_override) override; |
| void CancelDialogs(content::WebContents* web_contents, |
| bool suppress_callbacks, |
| bool reset_state) override; |
| |
| // WebContentsObserver: |
| void WasHidden() override; |
| |
| // BrowserListObserver: |
| void OnBrowserSetLastActive(Browser* browser) override; |
| |
| private: |
| friend class content::WebContentsUserData<JavaScriptDialogTabHelper>; |
| |
| void CloseDialog(bool suppress_callback, |
| bool success, |
| const base::string16& user_input); |
| |
| // The dialog being displayed on the observed WebContents. |
| base::WeakPtr<JavaScriptDialog> dialog_; |
| |
| // The callback provided for when the dialog is closed. Usually the dialog |
| // itself calls it, but in the cases where the dialog is closed not by the |
| // user's input but by a call to |CloseDialog|, this class will call it. |
| content::JavaScriptDialogManager::DialogClosedCallback dialog_callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(JavaScriptDialogTabHelper); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_JAVASCRIPT_DIALOGS_JAVASCRIPT_DIALOG_TAB_HELPER_H_ |