1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_BUBBLE_VIEW_H_ 6 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_BUBBLE_VIEW_H_ 7 8 #include "base/basictypes.h" 9 #include "base/timer/timer.h" 10 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h" 11 #include "content/public/browser/notification_observer.h" 12 #include "content/public/browser/notification_registrar.h" 13 #include "extensions/browser/extension_icon_image.h" 14 #include "ui/views/bubble/bubble_delegate.h" 15 #include "ui/views/controls/button/button.h" 16 #include "ui/views/controls/label.h" 17 18 class FullscreenController; 19 20 namespace content { 21 class NotificationDetails; 22 class NotificationSource; 23 class WebContents; 24 } 25 26 namespace views { 27 class ImageButton; 28 } // namespace views 29 30 // View used to display the zoom percentage when it has changed. 31 class ZoomBubbleView : public views::BubbleDelegateView, 32 public views::ButtonListener, 33 public content::NotificationObserver, 34 public ImmersiveModeController::Observer, 35 public extensions::IconImage::Observer { 36 public: 37 // Shows the bubble and automatically closes it after a short time period if 38 // |auto_close| is true. 39 static void ShowBubble(content::WebContents* web_contents, 40 bool auto_close); 41 42 // Closes the showing bubble (if one exists). 43 static void CloseBubble(); 44 45 // Whether the zoom bubble is currently showing. 46 static bool IsShowing(); 47 48 // Returns the zoom bubble if the zoom bubble is showing. Returns NULL 49 // otherwise. 50 static const ZoomBubbleView* GetZoomBubbleForTest(); 51 52 private: 53 // Stores information about the extension that initiated the zoom change, if 54 // any. 55 struct ZoomBubbleExtensionInfo { 56 ZoomBubbleExtensionInfo(); 57 ~ZoomBubbleExtensionInfo(); 58 59 // The unique id of the extension, which is used to find the correct 60 // extension after clicking on the image button in the zoom bubble. 61 std::string id; 62 63 // The name of the extension, which appears in the tooltip of the image 64 // button in the zoom bubble. 65 std::string name; 66 67 // An image of the extension's icon, which appears in the zoom bubble as an 68 // image button. 69 scoped_ptr<const extensions::IconImage> icon_image; 70 }; 71 72 ZoomBubbleView(views::View* anchor_view, 73 content::WebContents* web_contents, 74 bool auto_close, 75 ImmersiveModeController* immersive_mode_controller, 76 FullscreenController* fullscreen_controller); 77 virtual ~ZoomBubbleView(); 78 79 // If the bubble is not anchored to a view, places the bubble in the top 80 // right (left in RTL) of the |screen_bounds| that contain |web_contents_|'s 81 // browser window. Because the positioning is based on the size of the 82 // bubble, this must be called after the bubble is created. 83 void AdjustForFullscreen(const gfx::Rect& screen_bounds); 84 85 // Refreshes the bubble by changing the zoom percentage appropriately and 86 // resetting the timer if necessary. 87 void Refresh(); 88 89 void Close(); 90 91 // Sets information about the extension that initiated the zoom change. 92 // Calling this method asserts that the extension |extension| did initiate 93 // the zoom change. 94 void SetExtensionInfo(const extensions::Extension* extension); 95 96 // Starts a timer which will close the bubble if |auto_close_| is true. 97 void StartTimerIfNecessary(); 98 99 // Stops the auto-close timer. 100 void StopTimer(); 101 102 // extensions::IconImage::Observer overrides: 103 virtual void OnExtensionIconImageChanged( 104 extensions::IconImage* /* image */) OVERRIDE; 105 106 // views::View methods. 107 virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE; 108 virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE; 109 110 // ui::EventHandler method. 111 virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; 112 113 // views::ButtonListener method. 114 virtual void ButtonPressed(views::Button* sender, 115 const ui::Event& event) OVERRIDE; 116 117 // views::BubbleDelegateView method. 118 virtual void Init() OVERRIDE; 119 virtual void WindowClosing() OVERRIDE; 120 121 // content::NotificationObserver method. 122 virtual void Observe(int type, 123 const content::NotificationSource& source, 124 const content::NotificationDetails& details) OVERRIDE; 125 126 // ImmersiveModeController::Observer methods. 127 virtual void OnImmersiveRevealStarted() OVERRIDE; 128 virtual void OnImmersiveModeControllerDestroyed() OVERRIDE; 129 130 ZoomBubbleExtensionInfo extension_info_; 131 132 // Singleton instance of the zoom bubble. The zoom bubble can only be shown on 133 // the active browser window, so there is no case in which it will be shown 134 // twice at the same time. 135 static ZoomBubbleView* zoom_bubble_; 136 137 // Timer used to close the bubble when |auto_close_| is true. 138 base::OneShotTimer<ZoomBubbleView> timer_; 139 140 // Image button in the zoom bubble that will show the |extension_icon_| image 141 // if an extension initiated the zoom change, and links to that extension at 142 // "chrome://extensions". 143 views::ImageButton* image_button_; 144 145 // Label displaying the zoom percentage. 146 views::Label* label_; 147 148 // The WebContents for the page whose zoom has changed. 149 content::WebContents* web_contents_; 150 151 // Whether the currently displayed bubble will automatically close. 152 bool auto_close_; 153 154 // The immersive mode controller for the BrowserView containing 155 // |web_contents_|. 156 // Not owned. 157 ImmersiveModeController* immersive_mode_controller_; 158 159 // Used to register for fullscreen change notifications. 160 content::NotificationRegistrar registrar_; 161 162 DISALLOW_COPY_AND_ASSIGN(ZoomBubbleView); 163 }; 164 165 #endif // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_BUBBLE_VIEW_H_ 166
