Show keyboard when the focused editable field is touched inside the web content area.

When an editable fieled is touched and the focus is moved to the element, NOTIFICATION_FOCUS_CHANGED_IN_PAGE is sent. However, if the field is already focused, no notification is sent. But keyboard should be shown in such a case.

This CL
- Adds NOTIFICATION_FOCUSED_EDITABLE_NODE_TOUCHED notification, which is sent when the focused editable field is touched,
- Adds ChromeViewHostMsg_FocusedEditableNodeTouched IPC message, which is sent from renderer to browser when a touch released on the focused editable field,
- Changes RenderWidget to handle touch events in OnHandleInputEvent, and
- Handles NOTIFICATION_FOCUSED_EDITABLE_NODE_TOUCHED in KeyboardWidget to show keyboard.

BUG=none
TEST=Manual


Review URL: http://codereview.chromium.org/7923005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@103694 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 17 insertions, 0 deletions

diff --git a/content/renderer/render_view.cc b/content/renderer/render_view.cc
index 8d08fab..91d9c2d 100644
--- a/content/renderer/render_view.cc
+++ b/content/renderer/render_view.cc
@@ -223,6 +223,7 @@ using WebKit::WebStorageQuotaType;
 using WebKit::WebString;
 using WebKit::WebTextAffinity;
 using WebKit::WebTextDirection;
+using WebKit::WebTouchEvent;
 using WebKit::WebURL;
 using WebKit::WebURLError;
 using WebKit::WebURLRequest;
@@ -3948,6 +3949,10 @@ void RenderView::DidHandleMouseEvent(const WebKit::WebMouseEvent& event) {
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidHandleMouseEvent(event));
 }
 
+void RenderView::DidHandleTouchEvent(const WebTouchEvent& event) {
+  FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidHandleTouchEvent(event));
+}
+
 void RenderView::OnWasHidden() {
   RenderWidget::OnWasHidden();
 
diff --git a/content/renderer/render_view.h b/content/renderer/render_view.h
index 245e196..31a3141 100644
--- a/content/renderer/render_view.h
+++ b/content/renderer/render_view.h
@@ -134,6 +134,7 @@ class WebPlugin;
 class WebSpeechInputController;
 class WebSpeechInputListener;
 class WebStorageNamespace;
+class WebTouchEvent;
 class WebURLLoader;
 class WebURLRequest;
 class WebView;
@@ -649,6 +650,7 @@ class RenderView : public RenderWidget,
   virtual bool WillHandleMouseEvent(
       const WebKit::WebMouseEvent& event) OVERRIDE;
   virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event);
+  virtual void DidHandleTouchEvent(const WebKit::WebTouchEvent& event);
   virtual void OnSetFocus(bool enable);
   virtual void OnWasHidden();
   virtual void OnWasRestored(bool needs_repainting);
diff --git a/content/renderer/render_view_observer.h b/content/renderer/render_view_observer.h
index de5dda5..6f42f86 100644
--- a/content/renderer/render_view_observer.h
+++ b/content/renderer/render_view_observer.h
@@ -21,6 +21,7 @@ class WebMediaPlayerClient;
 class WebMouseEvent;
 class WebNode;
 class WebString;
+class WebTouchEvent;
 class WebURL;
 struct WebURLError;
 }
@@ -67,6 +68,7 @@ class CONTENT_EXPORT RenderViewObserver : public IPC::Channel::Listener,
 
   // These match the RenderView methods.
   virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event) {}
+  virtual void DidHandleTouchEvent(const WebKit::WebTouchEvent& event) {}
 
   virtual void WillCreateMediaPlayer(WebKit::WebFrame* frame,
                                      WebKit::WebMediaPlayerClient* client) {}
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 2f0dfc2..b57c11c 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -58,6 +58,7 @@ using WebKit::WebRect;
 using WebKit::WebScreenInfo;
 using WebKit::WebSize;
 using WebKit::WebTextDirection;
+using WebKit::WebTouchEvent;
 using WebKit::WebVector;
 using WebKit::WebWidget;
 
@@ -493,6 +494,8 @@ void RenderWidget::OnHandleInputEvent(const IPC::Message& message) {
       DidHandleKeyEvent();
     if (WebInputEvent::isMouseEventType(input_event->type))
       DidHandleMouseEvent(*(static_cast<const WebMouseEvent*>(input_event)));
+    if (WebInputEvent::isTouchEventType(input_event->type))
+      DidHandleTouchEvent(*(static_cast<const WebTouchEvent*>(input_event)));
   }
 }
 
diff --git a/content/renderer/render_widget.h b/content/renderer/render_widget.h
index f44f289..624888b 100644
--- a/content/renderer/render_widget.h
+++ b/content/renderer/render_widget.h
@@ -46,6 +46,7 @@ class PlatformCanvas;
 namespace WebKit {
 class WebInputEvent;
 class WebMouseEvent;
+class WebTouchEvent;
 class WebWidget;
 struct WebPopupMenuInfo;
 }
@@ -314,6 +315,10 @@ class CONTENT_EXPORT RenderWidget
   // just handled.
   virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event) {}
 
+  // Called by OnHandleInputEvent() to notify subclasses that a touch event was
+  // just handled.
+  virtual void DidHandleTouchEvent(const WebKit::WebTouchEvent& event) {}
+
   // Routing ID that allows us to communicate to the parent browser process
   // RenderWidgetHost. When MSG_ROUTING_NONE, no messages may be sent.
   int32 routing_id_;