Browser Side Text Input State Tracking for OOPIF.

content/browser/renderer_host/render_widget_host_delegate.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_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "build/build_config.h"
 #include "content/common/content_export.h"
+#include "content/common/text_input_state.h"
 #include "third_party/WebKit/public/platform/WebDisplayMode.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace blink {
 class WebMouseWheelEvent;
 class WebGestureEvent;
 }
 
 namespace gfx {
 class Point;
 class Rect;
 class Size;
 }
 
 namespace content {
 
 class BrowserAccessibilityManager;
 class RenderWidgetHostImpl;
 class RenderWidgetHostInputEventRouter;
+class RenderWidgetHostViewBase;
 struct NativeWebKeyboardEvent;
 
 //
 // RenderWidgetHostDelegate
 //
 //  An interface implemented by an object interested in knowing about the state
 //  of the RenderWidgetHost.
 class CONTENT_EXPORT RenderWidgetHostDelegate {
  public:
   // The RenderWidgetHost has just been created.
@@ skipping 82 matching lines @@
   // RenderWidgetHost to this function to determine who should ultimately
   // consume the event.  This facilitates keyboard event routing with
   // out-of-process iframes, where multiple RenderWidgetHosts may be involved
   // in rendering a page, yet keyboard events all arrive at the main frame's
   // RenderWidgetHostView.  When a main frame's RenderWidgetHost is passed in,
   // the function returns the focused frame that should consume keyboard
   // events. In all other cases, the function returns back |receiving_widget|.
   virtual RenderWidgetHostImpl* GetFocusedRenderWidgetHost(
       RenderWidgetHostImpl* receiving_widget);
 
+  // Returns the current value of text input state. This should be the value
+  // obtained from the focused  RWHV.

[Charlie Reis, 2016/03/15 18:32:00]

nit: Remove extra space.

[EhsanK, 2016/03/15 23:51:17]

Done. Thanks!

+  virtual TextInputState GetTextInputState();
+
+  // This method is called by any RWHV which receives an IPC regarding a change
+  // in the text input state. The IPC could or could not have lead to a change

[Charlie Reis, 2016/03/15 18:32:00]

nit: s/could/might/g

[EhsanK, 2016/03/15 23:51:17]

Done. Thanks!

+  // in state but this method must be called for IME related logic.
+  virtual void UpdateTextInputState(RenderWidgetHostViewBase* rwhv,
+                                    bool text_input_state_changed);
+
   // Notification that the renderer has become unresponsive. The
   // delegate can use this notification to show a warning to the user.
   virtual void RendererUnresponsive(RenderWidgetHostImpl* render_widget_host) {}
 
   // Notification that a previously unresponsive renderer has become
   // responsive again. The delegate can use this notification to end the
   // warning shown to the user.
   virtual void RendererResponsive(RenderWidgetHostImpl* render_widget_host) {}
 
   // Requests to lock the mouse. Once the request is approved or rejected,
@@ skipping 19 matching lines @@
   // Notification that the widget has lost capture.
   virtual void LostCapture(RenderWidgetHostImpl* render_widget_host) {}
 
   // Notification that the widget has lost the mouse lock.
   virtual void LostMouseLock(RenderWidgetHostImpl* render_widget_host) {}
 
 #if defined(OS_WIN)
   virtual gfx::NativeViewAccessible GetParentNativeViewAccessible();
 #endif
 
-  // Called when the widget has sent a compositor proto.  This is used in Btlimp
+  // Called when the widget has sent a compositor proto.  This is used in Blimp
   // mode with the RemoteChannel compositor.
   virtual void ForwardCompositorProto(RenderWidgetHostImpl* render_widget_host,
                                       const std::vector<uint8_t>& proto) {}
 
-  // Called when the visibility of the RenderFrameProxyHost in outter
+  // Called when the visibility of the RenderFrameProxyHost in outer
   // WebContents changes. This method is only called on an inner WebContents and
   // will eventually notify all the RenderWidgetHostViews belonging to that
   // WebContents.
   virtual void OnRenderFrameProxyVisibilityChanged(bool visible) {}
 
   // Update the renderer's cache of the screen rect of the view and window.
   virtual void SendScreenRects() {}
 
  protected:
   virtual ~RenderWidgetHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_DELEGATE_H_