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_VIEW_H_ 6 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_VIEW_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "chrome/browser/ui/views/location_bar/location_bar_view.h" 11 #include "ui/views/controls/image_view.h" 12 13 class ZoomController; 14 15 // View for the zoom icon in the Omnibox. 16 class ZoomView : public views::ImageView { 17 public: 18 // Clicking on the ZoomView shows a ZoomBubbleView, which requires the current 19 // WebContents. Because the current WebContents changes as the user switches 20 // tabs, it cannot be provided in the constructor. Instead, a 21 // LocationBarView::Delegate is passed here so that it can be queried for the 22 // current WebContents as needed. 23 explicit ZoomView(LocationBarView::Delegate* location_bar_delegate); 24 virtual ~ZoomView(); 25 26 // Updates the image and its tooltip appropriately, hiding or showing the icon 27 // as needed. 28 void Update(ZoomController* zoom_controller); 29 30 private: 31 // views::ImageView: 32 virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE; 33 virtual bool GetTooltipText(const gfx::Point& p, 34 base::string16* tooltip) const OVERRIDE; 35 virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE; 36 virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE; 37 virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE; 38 39 // ui::EventHandler: 40 virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; 41 42 // Helper method to show and focus the zoom bubble associated with this 43 // widget. 44 void ActivateBubble(); 45 46 // The delegate used to get the currently visible WebContents. 47 LocationBarView::Delegate* location_bar_delegate_; 48 49 DISALLOW_COPY_AND_ASSIGN(ZoomView); 50 }; 51 52 #endif // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ZOOM_VIEW_H_ 53
