content/port/browser/render_view_host_delegate_view.h

   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_PORT_BROWSER_RENDER_VIEW_HOST_DELEGATE_VIEW_H_
   6 #define CONTENT_PORT_BROWSER_RENDER_VIEW_HOST_DELEGATE_VIEW_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "content/common/content_export.h"
  12 #include "content/common/drag_event_source_info.h"
  13 #include "third_party/WebKit/public/web/WebDragOperation.h"
  14
  15 class SkBitmap;
  16
  17 namespace gfx {
  18 class ImageSkia;
  19 class Rect;
  20 class Vector2d;
  21 }
  22
  23 namespace content {
  24 struct ContextMenuParams;
  25 struct DropData;
  26 struct MenuItem;
  27
  28 // This class provides a way for the RenderViewHost to reach out to its
  29 // delegate's view. It only needs to be implemented by embedders if they don't
  30 // use the default WebContentsView implementations.
  31 class CONTENT_EXPORT RenderViewHostDelegateView {
  32  public:
  33   // A context menu should be shown, to be built using the context information
  34   // provided in the supplied params.
  35   virtual void ShowContextMenu(const ContextMenuParams& params) {}
  36
  37   // Shows a popup menu with the specified items.
  38   // This method should call RenderViewHost::DidSelectPopupMenuItem[s]() or
  39   // RenderViewHost::DidCancelPopupMenu() based on the user action.
  40   virtual void ShowPopupMenu(const gfx::Rect& bounds,
  41                              int item_height,
  42                              double item_font_size,
  43                              int selected_item,
  44                              const std::vector<MenuItem>& items,
  45                              bool right_aligned,
  46                              bool allow_multiple_selection) = 0;
  47
  48   // The user started dragging content of the specified type within the
  49   // RenderView. Contextual information about the dragged content is supplied
  50   // by DropData. If the delegate's view cannot start the drag for /any/
  51   // reason, it must inform the renderer that the drag has ended; otherwise,
  52   // this results in bugs like http://crbug.com/157134.
  53   virtual void StartDragging(const DropData& drop_data,
  54                              blink::WebDragOperationsMask allowed_ops,
  55                              const gfx::ImageSkia& image,
  56                              const gfx::Vector2d& image_offset,
  57                              const DragEventSourceInfo& event_info) {}
  58
  59   // The page wants to update the mouse cursor during a drag & drop operation.
  60   // |operation| describes the current operation (none, move, copy, link.)
  61   virtual void UpdateDragCursor(blink::WebDragOperation operation) {}
  62
  63   // Notification that view for this delegate got the focus.
  64   virtual void GotFocus() {}
  65
  66   // Callback to inform the browser that the page is returning the focus to
  67   // the browser's chrome. If reverse is true, it means the focus was
  68   // retrieved by doing a Shift-Tab.
  69   virtual void TakeFocus(bool reverse) {}
  70
  71  protected:
  72   virtual ~RenderViewHostDelegateView() {}
  73 };
  74
  75 }  // namespace content
  76
  77 #endif  // CONTENT_PORT_BROWSER_RENDER_VIEW_HOST_DELEGATE_VIEW_H_