athena: Provide a temporary onTextInputBoxFocused.addListener implementation.

athena/virtual_keyboard/virtual_keyboard_bindings_impl.cc

 // Copyright 2014 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.
 
 #include "athena/virtual_keyboard/public/virtual_keyboard_bindings.h"
 
 #include "base/json/json_string_value_serializer.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/strings/stringprintf.h"
@@ skipping 88 matching lines @@
     v8::Handle<v8::Object> chrome =
         global->Get(gin::StringToV8(isolate, "chrome"))->ToObject();
     CHECK(!chrome.IsEmpty());
 
     gin::Handle<VKBindings> controller =
         gin::CreateHandle(isolate, new VKBindings(render_view));
     if (controller.IsEmpty())
       return;
     chrome->Set(gin::StringToSymbol(isolate, "virtualKeyboardPrivate"),
                 controller.ToV8());
+
+    const std::string kInputBoxFocusedEvent =
+        "chrome.virtualKeyboardPrivate.onTextInputBoxFocused = {};"
+        "chrome.virtualKeyboardPrivate.onTextInputBoxFocused.addListener = "
+        "   function(callback) { "
+        "     window.setTimeout(function() {"
+        "       callback({type: 'text'});"
+        "     }, 100);"
+        "   };";
+    render_view->GetMainRenderFrame()->ExecuteJavaScript(
+        base::UTF8ToUTF16(kInputBoxFocusedEvent));

[bshe, 2014/06/20 21:00:30]

Just curios when is this javascript been executed? 

[sadrul, 2014/06/20 22:24:46]

This happens when the page navigates to chrome://keyboard/, before the JS on the
page (e.g. from keyboard.js).

   }
 
  private:
   explicit VKBindings(content::RenderView* render_view)
       : render_view_(render_view) {}
   virtual ~VKBindings() {}
 
   // gin::WrappableBase
   virtual gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
       v8::Isolate* isolate) OVERRIDE {
@@ skipping 63 matching lines @@
 };
 
 }  // namespace
 
 VirtualKeyboardBindings* VirtualKeyboardBindings::Create(
     content::RenderView* render_view) {
   return new VirtualKeyboardBindingsImpl(render_view);
 }
 
 }  // namespace athena