[Android] Select text when stylus first button is pressed.

content/browser/renderer_host/render_widget_host_view_android.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_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/i18n/rtl.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/process/process.h"
 #include "cc/layers/delegated_frame_resource_collection.h"
 #include "cc/output/begin_frame_args.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/renderer_host/delegated_frame_evictor.h"
 #include "content/browser/renderer_host/image_transport_factory_android.h"
 #include "content/browser/renderer_host/ime_adapter_android.h"
+#include "content/browser/renderer_host/input/gesture_text_selector.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/common/content_export.h"
 #include "gpu/command_buffer/common/mailbox.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "ui/base/android/window_android_observer.h"
 #include "ui/events/gesture_detection/filtered_gesture_provider.h"
 #include "ui/gfx/size.h"
 #include "ui/gfx/vector2d_f.h"
 
@@ skipping 10 matching lines @@
 }
 
 namespace blink {
 class WebExternalTextureLayer;
 class WebTouchEvent;
 class WebMouseEvent;
 }
 
 namespace content {
 class ContentViewCoreImpl;
+class GestureTextSelector;

[jdduke (slow), 2014/06/26 00:33:21]

Nit: No need for forward decl when we include the header.

[Changwan Ryu, 2014/06/26 02:54:10]

Done.

 class OverscrollGlow;
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 struct DidOverscrollParams;
 struct NativeWebKeyboardEvent;
 
 // -----------------------------------------------------------------------------
 // See comments in render_widget_host_view.h about this class and its members.
 // -----------------------------------------------------------------------------
 class CONTENT_EXPORT RenderWidgetHostViewAndroid
     : public RenderWidgetHostViewBase,
       public cc::DelegatedFrameResourceCollectionClient,
       public ImageTransportFactoryAndroidObserver,
       public ui::GestureProviderClient,
       public ui::WindowAndroidObserver,
-      public DelegatedFrameEvictorClient {
+      public DelegatedFrameEvictorClient,
+      public GestureTextSelectorClient {
  public:
   RenderWidgetHostViewAndroid(RenderWidgetHostImpl* widget,
                               ContentViewCoreImpl* content_view_core);
   virtual ~RenderWidgetHostViewAndroid();
 
   // RenderWidgetHostView implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
   virtual void InitAsChild(gfx::NativeView parent_view) OVERRIDE;
   virtual void InitAsPopup(RenderWidgetHostView* parent_host_view,
                            const gfx::Rect& pos) OVERRIDE;
@@ skipping 145 matching lines @@
       const cc::CompositorFrameMetadata& frame_metadata);
 
   void SetOverlayVideoMode(bool enabled);
 
   typedef base::Callback<
       void(const base::string16& content, int start_offset, int end_offset)>
       TextSurroundingSelectionCallback;
   void SetTextSurroundingSelectionCallback(
       const TextSurroundingSelectionCallback& callback);
 
+  // GestureTextSelectorClient implementation.
+  virtual void ShowSelectionHandlesAutomatically() OVERRIDE;

[aelias_OOO_until_Jul13, 2014/06/26 01:12:39]

nit: move these up next to the other virtual methods

[Changwan Ryu, 2014/06/26 02:54:10]

Done.

+  virtual void SelectRange(float x1, float y1, float x2, float y2) OVERRIDE;
+  virtual void Unselect() OVERRIDE;
+
  private:
   void RunAckCallbacks();
 
   void DestroyDelegatedContent();
   void SwapDelegatedFrame(uint32 output_surface_id,
                           scoped_ptr<cc::DelegatedFrameData> frame_data);
   void SendDelegatedFrameAck(uint32 output_surface_id);
   void SendReturnedDelegatedResources(uint32 output_surface_id);
 
   void OnFrameMetadataUpdated(
@@ skipping 84 matching lines @@
 
   const bool overscroll_effect_enabled_;
   // Used to render overscroll overlays.
   // Note: |overscroll_effect_| will never be NULL, even if it's never enabled.
   scoped_ptr<OverscrollGlow> overscroll_effect_;
 
   // Provides gesture synthesis given a stream of touch events (derived from
   // Android MotionEvent's) and touch event acks.
   ui::FilteredGestureProvider gesture_provider_;
 
+  // Handles gesture based text selection
+  GestureTextSelector gesture_text_selector_;
+
   bool flush_input_requested_;
 
   int accelerated_surface_route_id_;
 
   // Size to use if we have no backing ContentViewCore
   gfx::Size default_size_;
 
   const bool using_synchronous_compositor_;
 
   scoped_ptr<DelegatedFrameEvictor> frame_evictor_;
@@ skipping 12 matching lines @@
   scoped_ptr<LastFrameInfo> last_frame_info_;
 
   TextSurroundingSelectionCallback text_surrounding_selection_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_