Drag-and-drop: Move startDrag out of WebView/RenderView.

content/renderer/render_widget.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <deque>
 #include <map>
 #include <memory>
 #include <queue>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/common/cursors/webcursor.h"
+#include "content/common/drag_event_source_info.h"
 #include "content/common/edit_command.h"
 #include "content/common/input/synthetic_gesture_params.h"
 #include "content/public/common/screen_info.h"
 #include "content/renderer/devtools/render_widget_screen_metrics_emulator_delegate.h"
 #include "content/renderer/gpu/render_widget_compositor_delegate.h"
 #include "content/renderer/input/render_widget_input_handler.h"
 #include "content/renderer/input/render_widget_input_handler_delegate.h"
 #include "content/renderer/message_delivery_policy.h"
 #include "content/renderer/mouse_lock_dispatcher.h"
 #include "content/renderer/render_widget_mouse_lock_dispatcher.h"
@@ skipping 23 matching lines @@
 namespace IPC {
 class SyncMessage;
 class SyncMessageFilter;
 }
 
 namespace blink {
 namespace scheduler {
 class RenderWidgetSchedulingState;
 }
 struct WebDeviceEmulationParams;
+class WebDragData;
 class WebFrameWidget;
 class WebGestureEvent;
+class WebImage;
 class WebLocalFrame;
 class WebMouseEvent;
 class WebNode;
 struct WebPoint;
 }
 
 namespace cc {
 class CompositorFrameSink;
 class FrameSinkId;
 class SwapPromise;
@@ skipping 200 matching lines @@
   void didOverscroll(const blink::WebFloatSize& overscrollDelta,
                      const blink::WebFloatSize& accumulatedOverscroll,
                      const blink::WebFloatPoint& position,
                      const blink::WebFloatSize& velocity) override;
   void showImeIfNeeded() override;
   void convertViewportToWindow(blink::WebRect* rect) override;
   void convertWindowToViewport(blink::WebFloatRect* rect) override;
   bool requestPointerLock() override;
   void requestPointerUnlock() override;
   bool isPointerLocked() override;
+  void startDragging(blink::WebLocalFrame* frame,
+                     const blink::WebDragData& data,
+                     blink::WebDragOperationsMask mask,
+                     const blink::WebImage& image,
+                     const blink::WebPoint& imageOffset) override;
 
   // Override point to obtain that the current input method state and caret
   // position.
   virtual ui::TextInputType GetTextInputType();
 
 #if defined(OS_ANDROID)
   // Notifies that a tap was not consumed, so showing a UI for the unhandled
   // tap may be needed.
   // Performs various checks on the given WebNode to apply heuristics to
   // determine if triggering is appropriate.
@@ skipping 85 matching lines @@
     return mouse_lock_dispatcher_.get();
   }
 
   // TODO(ekaramad): The reference to the focused pepper plugin will be removed
   // from RenderWidget. The purpose of having the reference here was to make IME
   // work for OOPIF (https://crbug.com/643727).
   void set_focused_pepper_plugin(PepperPluginInstanceImpl* plugin) {
     focused_pepper_plugin_ = plugin;
   }
 
+  void set_possible_drag_event_info(ui::DragDropTypes::DragEventSource source,
+                                    gfx::Point location) {
+    possible_drag_event_info_.event_source = source;
+    possible_drag_event_info_.event_location = location;
+  }
+
   // When emulated, this returns original device scale factor.
   float GetOriginalDeviceScaleFactor() const;
 
  protected:
   // Friend RefCounted so that the dtor can be non-public. Using this class
   // without ref-counting is an error.
   friend class base::RefCounted<RenderWidget>;
 
   // For unit tests.
   friend class RenderWidgetTest;
@@ skipping 409 matching lines @@
 #endif
 
   // This reference is set by the RenderFrame and is used to query the IME-
   // related state from the plugin to later send to the browser.
   PepperPluginInstanceImpl* focused_pepper_plugin_;
 
   // Stores edit commands associated to the next key event.
   // Will be cleared as soon as the next key event is processed.
   EditCommands edit_commands_;
 
+  // This field stores drag/drop related info for the event that is currently
+  // being handled. If the current event results in starting a drag/drop
+  // session, this info is sent to the browser along with other drag/drop info.
+  DragEventSourceInfo possible_drag_event_info_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_