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_STATUS_BUBBLE_VIEWS_H_ 6 #define CHROME_BROWSER_UI_VIEWS_STATUS_BUBBLE_VIEWS_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "base/memory/weak_ptr.h" 12 #include "base/strings/string16.h" 13 #include "chrome/browser/ui/status_bubble.h" 14 #include "ui/gfx/rect.h" 15 #include "url/gurl.h" 16 17 namespace gfx { 18 class Point; 19 } 20 namespace views { 21 class View; 22 class Widget; 23 } 24 25 // StatusBubble displays a bubble of text that fades in, hovers over the 26 // browser chrome and fades away when not needed. It is primarily designed 27 // to allow users to see where hovered links point to. 28 class StatusBubbleViews : public StatusBubble { 29 public: 30 // How wide the bubble's shadow is. 31 static const int kShadowThickness; 32 33 // The combined vertical padding above and below the text. 34 static const int kTotalVerticalPadding = 7; 35 36 // |base_view| is the view that this bubble is positioned relative to. 37 explicit StatusBubbleViews(views::View* base_view); 38 virtual ~StatusBubbleViews(); 39 40 views::View* base_view() { return base_view_; } 41 42 // Reposition the bubble - as we are using a WS_POPUP for the bubble, 43 // we have to manually position it when the browser window moves. 44 virtual void Reposition(); 45 46 // The bubble only has a preferred height: the sum of the height of 47 // the font and kTotalVerticalPadding. 48 gfx::Size GetPreferredSize(); 49 50 // Set the bounds of the bubble relative to |base_view_|. 51 void SetBounds(int x, int y, int w, int h); 52 53 // Set bubble to new width. 54 void SetBubbleWidth(int width); 55 56 // Overridden from StatusBubble: 57 virtual void SetStatus(const string16& status) OVERRIDE; 58 virtual void SetURL(const GURL& url, const std::string& languages) OVERRIDE; 59 virtual void Hide() OVERRIDE; 60 virtual void MouseMoved(const gfx::Point& location, 61 bool left_content) OVERRIDE; 62 virtual void UpdateDownloadShelfVisibility(bool visible) OVERRIDE; 63 64 views::Widget* GetPopupForTest() { return popup(); } 65 66 protected: 67 views::Widget* popup() { return popup_.get(); } 68 69 private: 70 class StatusView; 71 class StatusViewExpander; 72 73 // Initializes the popup and view. 74 void Init(); 75 76 // Attempt to move the status bubble out of the way of the cursor, allowing 77 // users to see links in the region normally occupied by the status bubble. 78 void AvoidMouse(const gfx::Point& location); 79 80 // Returns true if the base_view_'s widget is visible and not minimized. 81 bool IsFrameVisible(); 82 83 // Expand bubble size to accommodate a long URL. 84 void ExpandBubble(); 85 86 // Cancel all waiting expansion animations in the timer. 87 void CancelExpandTimer(); 88 89 // Get the standard width for a status bubble in the current frame size. 90 int GetStandardStatusBubbleWidth(); 91 92 // Get the maximum possible width for a status bubble in the current frame 93 // size. 94 int GetMaxStatusBubbleWidth(); 95 96 // The status text we want to display when there are no URLs to display. 97 string16 status_text_; 98 99 // The url we want to display when there is no status text to display. 100 string16 url_text_; 101 102 // The original, non-elided URL. 103 GURL url_; 104 105 // Used to elide the original URL again when we expand it. 106 std::string languages_; 107 108 // Position relative to the base_view_. 109 gfx::Point original_position_; 110 // original_position_ adjusted according to the current RTL. 111 gfx::Point position_; 112 gfx::Size size_; 113 114 // Last location passed to MouseMoved(). 115 gfx::Point last_mouse_moved_location_; 116 117 // Whether the view contains the mouse. 118 bool contains_mouse_; 119 120 // How vertically offset the bubble is from its root position_. 121 int offset_; 122 123 // We use a HWND for the popup so that it may float above any HWNDs in our 124 // UI (the location bar, for example). 125 scoped_ptr<views::Widget> popup_; 126 double opacity_; 127 128 views::View* base_view_; 129 StatusView* view_; 130 131 // Manages the expansion of a status bubble to fit a long URL. 132 scoped_ptr<StatusViewExpander> expand_view_; 133 134 // If the download shelf is visible, do not obscure it. 135 bool download_shelf_is_visible_; 136 137 // If the bubble has already been expanded, and encounters a new URL, 138 // change size immediately, with no hover. 139 bool is_expanded_; 140 141 // Times expansion of status bubble when URL is too long for standard width. 142 base::WeakPtrFactory<StatusBubbleViews> expand_timer_factory_; 143 144 DISALLOW_COPY_AND_ASSIGN(StatusBubbleViews); 145 }; 146 147 #endif // CHROME_BROWSER_UI_VIEWS_STATUS_BUBBLE_VIEWS_H_ 148