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 "ui/views/bubble/bubble_delegate.h" 14 #include "ui/views/controls/button/button.h" 15 #include "ui/views/controls/label.h" 16 17 class FullscreenController; 18 19 namespace content { 20 class NotificationDetails; 21 class NotificationSource; 22 class WebContents; 23 } 24 25 // View used to display the zoom percentage when it has changed. 26 class ZoomBubbleView : public views::BubbleDelegateView, 27 public views::ButtonListener, 28 public content::NotificationObserver, 29 public ImmersiveModeController::Observer { 30 public: 31 // Shows the bubble and automatically closes it after a short time period if 32 // |auto_close| is true. 33 static void ShowBubble(content::WebContents* web_contents, 34 bool auto_close); 35 36 // Closes the showing bubble (if one exists). 37 static void CloseBubble(); 38 39 // Whether the zoom bubble is currently showing. 40 static bool IsShowing(); 41 42 // Returns the zoom bubble if the zoom bubble is showing. Returns NULL 43 // otherwise. 44 static const ZoomBubbleView* GetZoomBubbleForTest(); 45 46 private: 47 ZoomBubbleView(views::View* anchor_view, 48 content::WebContents* web_contents, 49 bool auto_close, 50 ImmersiveModeController* immersive_mode_controller, 51 FullscreenController* fullscreen_controller); 52 virtual ~ZoomBubbleView(); 53 54 // If the bubble is not anchored to a view, places the bubble in the top 55 // right (left in RTL) of the |screen_bounds| that contain |web_contents_|'s 56 // browser window. Because the positioning is based on the size of the 57 // bubble, this must be called after the bubble is created. 58 void AdjustForFullscreen(const gfx::Rect& screen_bounds); 59 60 // Refreshes the bubble by changing the zoom percentage appropriately and 61 // resetting the timer if necessary. 62 void Refresh(); 63 64 void Close(); 65 66 // Starts a timer which will close the bubble if |auto_close_| is true. 67 void StartTimerIfNecessary(); 68 69 // Stops the auto-close timer. 70 void StopTimer(); 71 72 // views::View methods. 73 virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE; 74 virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE; 75 76 // ui::EventHandler method. 77 virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; 78 79 // views::ButtonListener method. 80 virtual void ButtonPressed(views::Button* sender, 81 const ui::Event& event) OVERRIDE; 82 83 // views::BubbleDelegateView method. 84 virtual void Init() OVERRIDE; 85 virtual void WindowClosing() OVERRIDE; 86 87 // content::NotificationObserver method. 88 virtual void Observe(int type, 89 const content::NotificationSource& source, 90 const content::NotificationDetails& details) OVERRIDE; 91 92 // ImmersiveModeController::Observer methods. 93 virtual void OnImmersiveRevealStarted() OVERRIDE; 94 virtual void OnImmersiveModeControllerDestroyed() OVERRIDE; 95 96 // Singleton instance of the zoom bubble. The zoom bubble can only be shown on 97 // the active browser window, so there is no case in which it will be shown 98 // twice at the same time. 99 static ZoomBubbleView* zoom_bubble_; 100 101 // Timer used to close the bubble when |auto_close_| is true. 102 base::OneShotTimer<ZoomBubbleView> timer_; 103 104 // Label displaying the zoom percentage. 105 views::Label* label_; 106 107 // The WebContents for the page whose zoom has changed. 108 content::WebContents* web_contents_; 109 110 // Whether the currently displayed bubble will automatically close. 111 bool auto_close_; 112 113 // The immersive mode controller for the BrowserView containing 114 // |web_contents_|. 115 // Not owned. 116 ImmersiveModeController* immersive_mode_controller_; 117 118 // Used to register for fullscreen change notifications. 119 content::NotificationRegistrar registrar_; 120 121 DISALLOW_COPY_AND_ASSIGN(ZoomBubbleView); 122 }; 123 124 #endif // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_BUBBLE_VIEW_H_ 125