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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_VIEWS_EXTENSIONS_EXTENSION_VIEW_VIEWS_H_
      6 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_VIEW_VIEWS_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "content/public/browser/native_web_keyboard_event.h"
     11 #include "extensions/browser/extension_host.h"
     12 #include "third_party/skia/include/core/SkBitmap.h"
     13 #include "ui/views/controls/native/native_view_host.h"
     14 #include "ui/views/controls/webview/unhandled_keyboard_event_handler.h"
     15 
     16 class Browser;
     17 
     18 namespace content {
     19 class RenderViewHost;
     20 }
     21 
     22 // This handles the display portion of an ExtensionHost.
     23 class ExtensionViewViews : public views::NativeViewHost {
     24  public:
     25   // A class that represents the container that this view is in.
     26   // (bottom shelf, side bar, etc.)
     27   class Container {
     28    public:
     29     virtual ~Container() {}
     30 
     31     virtual void OnExtensionSizeChanged(ExtensionViewViews* view) {}
     32   };
     33 
     34   ExtensionViewViews(extensions::ExtensionHost* host, Browser* browser);
     35   virtual ~ExtensionViewViews();
     36 
     37   // views::NativeViewHost:
     38   virtual gfx::Size GetMinimumSize() const OVERRIDE;
     39   virtual void SetVisible(bool is_visible) OVERRIDE;
     40   virtual gfx::NativeCursor GetCursor(const ui::MouseEvent& event) OVERRIDE;
     41   virtual void ViewHierarchyChanged(
     42       const ViewHierarchyChangedDetails& details) OVERRIDE;
     43 
     44   extensions::ExtensionHost* host() const { return host_; }
     45   const extensions::Extension* extension() const { return host_->extension(); }
     46   content::RenderViewHost* render_view_host() const {
     47     return host_->render_view_host();
     48   }
     49   Browser* browser() const { return browser_; }
     50   void set_minimum_size(const gfx::Size& minimum_size) {
     51     minimum_size_ = minimum_size;
     52   }
     53   void set_container(Container* container) { container_ = container; }
     54 
     55   void DidStopLoading();
     56   void SetIsClipped(bool is_clipped);
     57 
     58   // Notification from ExtensionHost.
     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   // Handles unhandled keyboard messages coming back from the renderer process.
     66   void HandleKeyboardEvent(const content::NativeWebKeyboardEvent& event);
     67 
     68  private:
     69   friend class extensions::ExtensionHost;
     70 
     71   // views::NativeViewHost:
     72   virtual bool SkipDefaultKeyEventProcessing(const ui::KeyEvent& e) OVERRIDE;
     73   virtual void OnBoundsChanged(const gfx::Rect& previous_bounds) OVERRIDE;
     74   virtual void PreferredSizeChanged() OVERRIDE;
     75   virtual void OnFocus() OVERRIDE;
     76 
     77   // Initializes the RenderWidgetHostView for this object.
     78   void CreateWidgetHostView();
     79 
     80   // We wait to show the ExtensionViewViews until several things have loaded.
     81   void ShowIfCompletelyLoaded();
     82 
     83   // Restore object to initial state. Called on shutdown or after a renderer
     84   // crash.
     85   void CleanUp();
     86 
     87   // The running extension instance that we're displaying.
     88   // Note that host_ owns view
     89   extensions::ExtensionHost* host_;
     90 
     91   // The browser window that this view is in.
     92   Browser* browser_;
     93 
     94   // True if we've been initialized.
     95   bool initialized_;
     96 
     97   // What we should set the preferred width to once the ExtensionViewViews has
     98   // loaded.
     99   gfx::Size pending_preferred_size_;
    100   gfx::Size minimum_size_;
    101 
    102   // The container this view is in (not necessarily its direct superview).
    103   // Note: the view does not own its container.
    104   Container* container_;
    105 
    106   // Whether this extension view is clipped.
    107   bool is_clipped_;
    108 
    109   // A handler to handle unhandled keyboard messages coming back from the
    110   // renderer process.
    111   views::UnhandledKeyboardEventHandler unhandled_keyboard_event_handler_;
    112 
    113   DISALLOW_COPY_AND_ASSIGN(ExtensionViewViews);
    114 };
    115 
    116 #endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_VIEW_VIEWS_H_
    117