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      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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MAC_H_
      6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MAC_H_
      7 
      8 #import <Cocoa/Cocoa.h>
      9 
     10 #include <string>
     11 #include <vector>
     12 
     13 #include "base/mac/scoped_nsobject.h"
     14 #include "base/memory/scoped_ptr.h"
     15 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
     16 #include "content/browser/web_contents/web_contents_view.h"
     17 #include "content/common/content_export.h"
     18 #include "content/common/drag_event_source_info.h"
     19 #include "ui/base/cocoa/base_view.h"
     20 #include "ui/gfx/size.h"
     21 
     22 @class FocusTracker;
     23 class SkBitmap;
     24 @class WebDragDest;
     25 @class WebDragSource;
     26 
     27 namespace content {
     28 class PopupMenuHelper;
     29 class WebContentsImpl;
     30 class WebContentsViewDelegate;
     31 class WebContentsViewMac;
     32 }
     33 
     34 namespace gfx {
     35 class Vector2d;
     36 }
     37 
     38 CONTENT_EXPORT
     39 @interface WebContentsViewCocoa : BaseView {
     40  @private
     41   content::WebContentsViewMac* webContentsView_;  // WEAK; owns us
     42   base::scoped_nsobject<WebDragSource> dragSource_;
     43   base::scoped_nsobject<WebDragDest> dragDest_;
     44   BOOL mouseDownCanMoveWindow_;
     45 }
     46 
     47 - (void)setMouseDownCanMoveWindow:(BOOL)canMove;
     48 
     49 // Expose this, since sometimes one needs both the NSView and the
     50 // WebContentsImpl.
     51 - (content::WebContentsImpl*)webContents;
     52 @end
     53 
     54 namespace content {
     55 
     56 // Mac-specific implementation of the WebContentsView. It owns an NSView that
     57 // contains all of the contents of the tab and associated child views.
     58 class WebContentsViewMac : public WebContentsView,
     59                            public RenderViewHostDelegateView {
     60  public:
     61   // The corresponding WebContentsImpl is passed in the constructor, and manages
     62   // our lifetime. This doesn't need to be the case, but is this way currently
     63   // because that's what was easiest when they were split.
     64   WebContentsViewMac(WebContentsImpl* web_contents,
     65                      WebContentsViewDelegate* delegate);
     66   virtual ~WebContentsViewMac();
     67 
     68   // WebContentsView implementation --------------------------------------------
     69   virtual gfx::NativeView GetNativeView() const OVERRIDE;
     70   virtual gfx::NativeView GetContentNativeView() const OVERRIDE;
     71   virtual gfx::NativeWindow GetTopLevelNativeWindow() const OVERRIDE;
     72   virtual void GetContainerBounds(gfx::Rect* out) const OVERRIDE;
     73   virtual void SizeContents(const gfx::Size& size) OVERRIDE;
     74   virtual void Focus() OVERRIDE;
     75   virtual void SetInitialFocus() OVERRIDE;
     76   virtual void StoreFocus() OVERRIDE;
     77   virtual void RestoreFocus() OVERRIDE;
     78   virtual DropData* GetDropData() const OVERRIDE;
     79   virtual gfx::Rect GetViewBounds() const OVERRIDE;
     80   virtual void SetAllowOtherViews(bool allow) OVERRIDE;
     81   virtual bool GetAllowOtherViews() const OVERRIDE;
     82   virtual void CreateView(
     83       const gfx::Size& initial_size, gfx::NativeView context) OVERRIDE;
     84   virtual RenderWidgetHostViewBase* CreateViewForWidget(
     85       RenderWidgetHost* render_widget_host) OVERRIDE;
     86   virtual RenderWidgetHostViewBase* CreateViewForPopupWidget(
     87       RenderWidgetHost* render_widget_host) OVERRIDE;
     88   virtual void SetPageTitle(const base::string16& title) OVERRIDE;
     89   virtual void RenderViewCreated(RenderViewHost* host) OVERRIDE;
     90   virtual void RenderViewSwappedIn(RenderViewHost* host) OVERRIDE;
     91   virtual void SetOverscrollControllerEnabled(bool enabled) OVERRIDE;
     92   virtual bool IsEventTracking() const OVERRIDE;
     93   virtual void CloseTabAfterEventTracking() OVERRIDE;
     94 
     95   // Backend implementation of RenderViewHostDelegateView.
     96   virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
     97                                const ContextMenuParams& params) OVERRIDE;
     98   virtual void ShowPopupMenu(RenderFrameHost* render_frame_host,
     99                              const gfx::Rect& bounds,
    100                              int item_height,
    101                              double item_font_size,
    102                              int selected_item,
    103                              const std::vector<MenuItem>& items,
    104                              bool right_aligned,
    105                              bool allow_multiple_selection) OVERRIDE;
    106   virtual void HidePopupMenu() OVERRIDE;
    107   virtual void StartDragging(const DropData& drop_data,
    108                              blink::WebDragOperationsMask allowed_operations,
    109                              const gfx::ImageSkia& image,
    110                              const gfx::Vector2d& image_offset,
    111                              const DragEventSourceInfo& event_info) OVERRIDE;
    112   virtual void UpdateDragCursor(blink::WebDragOperation operation) OVERRIDE;
    113   virtual void GotFocus() OVERRIDE;
    114   virtual void TakeFocus(bool reverse) OVERRIDE;
    115 
    116   // A helper method for closing the tab in the
    117   // CloseTabAfterEventTracking() implementation.
    118   void CloseTab();
    119 
    120   WebContentsImpl* web_contents() { return web_contents_; }
    121   WebContentsViewDelegate* delegate() { return delegate_.get(); }
    122 
    123  private:
    124   // The WebContentsImpl whose contents we display.
    125   WebContentsImpl* web_contents_;
    126 
    127   // The Cocoa NSView that lives in the view hierarchy.
    128   base::scoped_nsobject<WebContentsViewCocoa> cocoa_view_;
    129 
    130   // Keeps track of which NSView has focus so we can restore the focus when
    131   // focus returns.
    132   base::scoped_nsobject<FocusTracker> focus_tracker_;
    133 
    134   // Our optional delegate.
    135   scoped_ptr<WebContentsViewDelegate> delegate_;
    136 
    137   // Whether to allow other views.
    138   bool allow_other_views_;
    139 
    140   scoped_ptr<PopupMenuHelper> popup_menu_helper_;
    141 
    142   DISALLOW_COPY_AND_ASSIGN(WebContentsViewMac);
    143 };
    144 
    145 }  // namespace content
    146 
    147 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_MAC_H_
    148