browser_root_view.h revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246
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 10class BrowserView; 11class TabStrip; 12 13namespace ui { 14class 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. 22class 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 42 private: 43 // Returns true if the event should be forwarded to the tabstrip. 44 bool ShouldForwardToTabStrip(const ui::DropTargetEvent& event); 45 46 // Converts the event from the hosts coordinate system to the tabstrips 47 // coordinate system. 48 ui::DropTargetEvent* MapEventToTabStrip( 49 const ui::DropTargetEvent& event, 50 const ui::OSExchangeData& data); 51 52 inline TabStrip* tabstrip() const; 53 54 // Returns true if |data| has string contents and the user can "paste and go". 55 // If |url| is non-NULL and the user can "paste and go", |url| is set to the 56 // desired destination. 57 bool GetPasteAndGoURL(const ui::OSExchangeData& data, GURL* url); 58 59 // The BrowserView. 60 BrowserView* browser_view_; 61 62 // If true, drag and drop events are being forwarded to the tab strip. 63 // This is used to determine when to send OnDragEntered and OnDragExited 64 // to the tab strip. 65 bool forwarding_to_tab_strip_; 66 67 DISALLOW_COPY_AND_ASSIGN(BrowserRootView); 68}; 69 70#endif // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_ROOT_VIEW_H_ 71