components/html_viewer/ime_controller.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_HTML_VIEWER_IME_CONTROLLER_H_
   6 #define COMPONENTS_HTML_VIEWER_IME_CONTROLLER_H_
   7
   8 #include "third_party/WebKit/public/web/WebTextInputInfo.h"
   9
  10 namespace blink {
  11 class WebGestureEvent;
  12 class WebWidget;
  13 }
  14
  15 namespace mus {
  16 class View;
  17 }
  18
  19 namespace html_viewer {
  20
  21 // This class is used by HTMLWidgetRootLocal and HTMLWidgetLocalRoot for
  22 // handling IME related stuff.
  23 class ImeController {
  24  public:
  25   ImeController(mus::View* view, blink::WebWidget* widget);
  26   ~ImeController();
  27
  28   // Methods called by WebWidget overrides.
  29   void ResetInputMethod();
  30   void DidHandleGestureEvent(const blink::WebGestureEvent& event,
  31                              bool event_cancelled);
  32   void DidUpdateTextOfFocusedElementByNonUserInput();
  33   void ShowImeIfNeeded();
  34
  35  private:
  36   // Update text input state from WebWidget to mus::View. If the focused
  37   // element is editable and |show_ime| is True, the software keyboard will be
  38   // shown.
  39   void UpdateTextInputState(bool show_ime);
  40
  41   // Not owned objects.
  42   mus::View* view_;
  43   blink::WebWidget* widget_;
  44
  45   blink::WebTextInputInfo text_input_info_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(ImeController);
  48 };
  49
  50 }  // namespace html_viewer
  51
  52 #endif  // COMPONENTS_HTML_VIEWER_IME_CONTROLLER_H_