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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 CHROME_BROWSER_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
      6 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "third_party/skia/include/core/SkBitmap.h"
     10 #include "ui/gfx/native_widget_types.h"
     11 #include "ui/gfx/size.h"
     12 
     13 class Browser;
     14 class SkBitmap;
     15 
     16 namespace content {
     17 class RenderViewHost;
     18 }
     19 
     20 namespace extensions {
     21 class ExtensionHost;
     22 }
     23 
     24 // This class represents extension views. An extension view internally contains
     25 // a bridge to an extension process, which draws to the extension view's
     26 // native view object through IPC.
     27 class ExtensionViewMac {
     28  public:
     29   class Container {
     30    public:
     31     virtual ~Container() {}
     32     virtual void OnExtensionSizeChanged(ExtensionViewMac* view,
     33                                         const gfx::Size& new_size) {}
     34     virtual void OnExtensionViewDidShow(ExtensionViewMac* view) {};
     35   };
     36 
     37   ExtensionViewMac(extensions::ExtensionHost* extension_host, Browser* browser);
     38   ~ExtensionViewMac();
     39 
     40   // Starts the extension process and creates the native view. You must call
     41   // this method before calling any of this class's other methods.
     42   void Init();
     43 
     44   // Returns the extension's native view.
     45   gfx::NativeView native_view();
     46 
     47   // Returns the browser the extension belongs to.
     48   Browser* browser() const { return browser_; }
     49 
     50   // Method for the ExtensionHost to notify us that the extension page is
     51   // loaded.
     52   void DidStopLoading();
     53 
     54   // Sets the container for this view.
     55   void set_container(Container* container) { container_ = container; }
     56 
     57   // Method for the ExtensionHost to notify us about the correct size for
     58   // extension contents.
     59   void ResizeDueToAutoResize(const gfx::Size& new_size);
     60 
     61   // Method for the ExtensionHost to notify us when the RenderViewHost has a
     62   // connection.
     63   void RenderViewCreated();
     64 
     65   // Informs the view that its containing window's frame changed.
     66   void WindowFrameChanged();
     67 
     68   // The minimum/maximum dimensions of the popup.
     69   // The minimum is just a little larger than the size of the button itself.
     70   // The maximum is an arbitrary number that should be smaller than most
     71   // screens.
     72   static const CGFloat kMinWidth;
     73   static const CGFloat kMinHeight;
     74   static const CGFloat kMaxWidth;
     75   static const CGFloat kMaxHeight;
     76 
     77  private:
     78   content::RenderViewHost* render_view_host() const;
     79 
     80   void CreateWidgetHostView();
     81 
     82   // We wait to show the ExtensionView until several things have loaded.
     83   void ShowIfCompletelyLoaded();
     84 
     85   Browser* browser_;  // weak
     86 
     87   extensions::ExtensionHost* extension_host_;  // weak
     88 
     89   // What we should set the preferred width to once the ExtensionView has
     90   // loaded.
     91   gfx::Size pending_preferred_size_;
     92 
     93   Container* container_;
     94 
     95   DISALLOW_COPY_AND_ASSIGN(ExtensionViewMac);
     96 };
     97 
     98 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_EXTENSION_VIEW_MAC_H_
     99