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_FRAME_BROWSER_ROOT_VIEW_H_ 6 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_ROOT_VIEW_H_ 7 8 #include "ui/views/widget/root_view.h" 9 10 class BrowserView; 11 class TabStrip; 12 13 namespace ui { 14 class OSExchangeData; 15 } 16 17 // RootView implementation used by BrowserFrame. This forwards drop events to 18 // the TabStrip. Visually the tabstrip extends to the top of the frame, but in 19 // actually it doesn't. The tabstrip is only as high as a tab. To enable 20 // dropping above the tabstrip BrowserRootView forwards drop events to the 21 // TabStrip. 22 class BrowserRootView : public views::internal::RootView { 23 public: 24 // Internal class name. 25 static const char kViewClassName[]; 26 27 // You must call set_tabstrip before this class will accept drops. 28 BrowserRootView(BrowserView* browser_view, views::Widget* widget); 29 30 // Overridden from views::View: 31 virtual bool GetDropFormats( 32 int* formats, 33 std::set<ui::OSExchangeData::CustomFormat>* custom_formats) OVERRIDE; 34 virtual bool AreDropTypesRequired() OVERRIDE; 35 virtual bool CanDrop(const ui::OSExchangeData& data) OVERRIDE; 36 virtual void OnDragEntered(const ui::DropTargetEvent& event) OVERRIDE; 37 virtual int OnDragUpdated(const ui::DropTargetEvent& event) OVERRIDE; 38 virtual void OnDragExited() OVERRIDE; 39 virtual int OnPerformDrop(const ui::DropTargetEvent& event) OVERRIDE; 40 virtual const char* GetClassName() const OVERRIDE; 41 virtual bool OnMouseWheel(const ui::MouseWheelEvent& event) OVERRIDE; 42 43 private: 44 // ui::EventProcessor: 45 virtual ui::EventDispatchDetails OnEventFromSource(ui::Event* event) OVERRIDE; 46 47 // Returns true if the event should be forwarded to the tabstrip. 48 bool ShouldForwardToTabStrip(const ui::DropTargetEvent& event); 49 50 // Converts the event from the hosts coordinate system to the tabstrips 51 // coordinate system. 52 ui::DropTargetEvent* MapEventToTabStrip( 53 const ui::DropTargetEvent& event, 54 const ui::OSExchangeData& data); 55 56 inline TabStrip* tabstrip() const; 57 58 // Returns true if |data| has string contents and the user can "paste and go". 59 // If |url| is non-NULL and the user can "paste and go", |url| is set to the 60 // desired destination. 61 bool GetPasteAndGoURL(const ui::OSExchangeData& data, GURL* url); 62 63 // The BrowserView. 64 BrowserView* browser_view_; 65 66 // If true, drag and drop events are being forwarded to the tab strip. 67 // This is used to determine when to send OnDragEntered and OnDragExited 68 // to the tab strip. 69 bool forwarding_to_tab_strip_; 70 71 DISALLOW_COPY_AND_ASSIGN(BrowserRootView); 72 }; 73 74 #endif // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_ROOT_VIEW_H_ 75
