Drag-and-drop: DragEnter, DragOver, DragLeave, DragDrop

content/browser/renderer_host/render_widget_host_impl.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 22 matching lines @@
 #include "content/browser/renderer_host/input/touch_emulator_client.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/common/drag_event_source_info.h"
 #include "content/common/input/input_event_ack_state.h"
 #include "content/common/input/synthetic_gesture_packet.h"
 #include "content/common/view_message_enums.h"
 #include "content/public/browser/readback_types.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/common/page_zoom.h"
+#include "content/public/common/url_constants.h"
 #include "ipc/ipc_listener.h"
 #include "third_party/WebKit/public/platform/WebDisplayMode.h"
 #include "ui/base/ime/text_input_mode.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/events/gesture_detection/gesture_provider_config_helper.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/native_widget_types.h"
 
 struct FrameHostMsg_HittestData_Params;
 struct ViewHostMsg_SelectionBounds_Params;
@@ skipping 114 matching lines @@
   void RemoveKeyPressEventCallback(
       const KeyPressEventCallback& callback) override;
   void AddMouseEventCallback(const MouseEventCallback& callback) override;
   void RemoveMouseEventCallback(const MouseEventCallback& callback) override;
   void AddInputEventObserver(
       RenderWidgetHost::InputEventObserver* observer) override;
   void RemoveInputEventObserver(
       RenderWidgetHost::InputEventObserver* observer) override;
   void GetScreenInfo(content::ScreenInfo* result) override;
   void HandleCompositorProto(const std::vector<uint8_t>& proto) override;
+  // |drop_data| must have been filtered. The embedder should call
+  // FilterDropData before passing the drop data to RWHI.
+  void DragTargetDragEnter(const DropData& drop_data,
+                           const gfx::Point& client_pt,
+                           const gfx::Point& screen_pt,
+                           blink::WebDragOperationsMask operations_allowed,
+                           int key_modifiers) override;
+  void DragTargetDragEnterWithMetaData(
+      const std::vector<DropData::Metadata>& metadata,
+      const gfx::Point& client_pt,
+      const gfx::Point& screen_pt,
+      blink::WebDragOperationsMask operations_allowed,
+      int key_modifiers) override;
+  void DragTargetDragOver(const gfx::Point& client_pt,
+                          const gfx::Point& screen_pt,
+                          blink::WebDragOperationsMask operations_allowed,
+                          int key_modifiers) override;
+  void DragTargetDragLeave() override;
+  // |drop_data| must have been filtered. The embedder should call
+  // FilterDropData before passing the drop data to RWHI.
+  void DragTargetDrop(const DropData& drop_data,
+                      const gfx::Point& client_pt,
+                      const gfx::Point& screen_pt,
+                      int key_modifiers) override;
+  void FilterDropData(DropData* drop_data) override;
 
   // Notification that the screen info has changed.
   void NotifyScreenInfoChanged();
 
   // Forces redraw in the renderer and when the update reaches the browser
   // grabs snapshot from the compositor. Returns PNG-encoded snapshot.
   using GetSnapshotFromBrowserCallback =
       base::Callback<void(const unsigned char*, size_t)>;
   void GetSnapshotFromBrowser(const GetSnapshotFromBrowserCallback& callback);
 
@@ skipping 473 matching lines @@
   void WindowSnapshotReachedScreen(int snapshot_id);
 
   void OnSnapshotDataReceived(int snapshot_id,
                               const unsigned char* png,
                               size_t size);
 
   void OnSnapshotDataReceivedAsync(
       int snapshot_id,
       scoped_refptr<base::RefCountedBytes> png_data);
 
+  // 1. Grants permissions to URL (if any)
+  // 2. Grants permissions to filenames
+  // 3. Grants permissions to file system files.
+  // 4. Register the files with the IsolatedContext.
+  void GrantFileAccessFromDropData(DropData* drop_data);
+
   // true if a renderer has once been valid. We use this flag to display a sad
   // tab only when we lose our renderer and not if a paint occurs during
   // initialization.
   bool renderer_initialized_;
 
   // True if |Destroy()| has been called.
   bool destroyed_;
 
   // Our delegate, which wants to know mainly about keyboard events.
   // It will remain non-NULL until DetachDelegate() is called.
@@ skipping 180 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_