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      1 // Copyright (c) 2010 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_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
      6 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
      7 #pragma once
      8 
      9 #include "base/basictypes.h"
     10 #include "third_party/skia/include/core/SkBitmap.h"
     11 #include "ui/gfx/native_widget_types.h"
     12 #include "ui/gfx/size.h"
     13 
     14 class Browser;
     15 class ExtensionHost;
     16 class RenderViewHost;
     17 class RenderWidgetHostViewMac;
     18 class SkBitmap;
     19 
     20 // This class represents extension views. An extension view internally contains
     21 // a bridge to an extension process, which draws to the extension view's
     22 // native view object through IPC.
     23 class ExtensionViewMac {
     24  public:
     25   ExtensionViewMac(ExtensionHost* extension_host, Browser* browser);
     26   ~ExtensionViewMac();
     27 
     28   // Starts the extension process and creates the native view. You must call
     29   // this method before calling any of this class's other methods.
     30   void Init();
     31 
     32   // Returns the extension's native view.
     33   gfx::NativeView native_view();
     34 
     35   // Returns the browser the extension belongs to.
     36   Browser* browser() const { return browser_; }
     37 
     38   // Does this extension live as a toolstrip in an extension shelf?
     39   bool is_toolstrip() const { return is_toolstrip_; }
     40   void set_is_toolstrip(bool is_toolstrip) { is_toolstrip_ = is_toolstrip; }
     41 
     42   // Sets the extensions's background image.
     43   void SetBackground(const SkBitmap& background);
     44 
     45   // Method for the ExtensionHost to notify us about the correct size for
     46   // extension contents.
     47   void UpdatePreferredSize(const gfx::Size& new_size);
     48 
     49   // Method for the ExtensionHost to notify us when the RenderViewHost has a
     50   // connection.
     51   void RenderViewCreated();
     52 
     53   // Informs the view that its containing window's frame changed.
     54   void WindowFrameChanged();
     55 
     56   // The minimum/maximum dimensions of the popup.
     57   // The minimum is just a little larger than the size of the button itself.
     58   // The maximum is an arbitrary number that should be smaller than most
     59   // screens.
     60   static const CGFloat kMinWidth;
     61   static const CGFloat kMinHeight;
     62   static const CGFloat kMaxWidth;
     63   static const CGFloat kMaxHeight;
     64 
     65  private:
     66   RenderViewHost* render_view_host() const;
     67 
     68   void CreateWidgetHostView();
     69 
     70   // True if the contents are being displayed inside the extension shelf.
     71   bool is_toolstrip_;
     72 
     73   Browser* browser_;  // weak
     74 
     75   ExtensionHost* extension_host_;  // weak
     76 
     77   // Created by us, but owned by its |native_view()|. We |release| the
     78   // rwhv's native view in our destructor, effectively freeing this.
     79   RenderWidgetHostViewMac* render_widget_host_view_;
     80 
     81   // The background the view should have once it is initialized. This is set
     82   // when the view has a custom background, but hasn't been initialized yet.
     83   SkBitmap pending_background_;
     84 
     85   DISALLOW_COPY_AND_ASSIGN(ExtensionViewMac);
     86 };
     87 
     88 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
     89