src/chromeos/dbus/ibus/ibus_engine_service.cc

   1 // Copyright (c) 2012 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 #include "chromeos/dbus/ibus/ibus_engine_service.h"
   6
   7 #include <string>
   8 #include "base/bind.h"
   9 #include "base/callback.h"
  10 #include "chromeos/dbus/ibus/ibus_constants.h"
  11 #include "chromeos/dbus/ibus/ibus_text.h"
  12 #include "chromeos/ime/ibus_bridge.h"
  13
  14 namespace chromeos {
  15 // An implementation of IBusEngineService without ibus-daemon interaction.
  16 // Currently this class is used only on linux desktop.
  17 // TODO(nona): Use this on ChromeOS device once crbug.com/171351 is fixed.
  18 class IBusEngineServiceDaemonlessImpl : public IBusEngineService {
  19  public:
  20   IBusEngineServiceDaemonlessImpl() {}
  21   virtual ~IBusEngineServiceDaemonlessImpl() {}
  22
  23   // IBusEngineService override.
  24   virtual void SetEngine(IBusEngineHandlerInterface* handler) OVERRIDE {
  25     IBusBridge::Get()->SetEngineHandler(handler);
  26   }
  27
  28   // IBusEngineService override.
  29   virtual void UnsetEngine(IBusEngineHandlerInterface* handler) OVERRIDE {
  30     if (IBusBridge::Get()->GetEngineHandler() == handler)
  31       IBusBridge::Get()->SetEngineHandler(NULL);
  32   }
  33
  34   // IBusEngineService override.
  35   virtual void UpdatePreedit(const IBusText& ibus_text,
  36                              uint32 cursor_pos,
  37                              bool is_visible,
  38                              IBusEnginePreeditFocusOutMode mode) OVERRIDE {
  39     IBusInputContextHandlerInterface* input_context =
  40         IBusBridge::Get()->GetInputContextHandler();
  41     if (input_context)
  42       input_context->UpdatePreeditText(ibus_text, cursor_pos, is_visible);
  43   }
  44
  45   // IBusEngineService override.
  46   virtual void UpdateAuxiliaryText(const IBusText& ibus_text,
  47                                    bool is_visible) OVERRIDE {
  48     IBusPanelCandidateWindowHandlerInterface* candidate_window =
  49         IBusBridge::Get()->GetCandidateWindowHandler();
  50     if (candidate_window)
  51       candidate_window->UpdateAuxiliaryText(ibus_text.text(), is_visible);
  52   }
  53
  54   // IBusEngineService override.
  55   virtual void ForwardKeyEvent(uint32 keyval, uint32 keycode,
  56                                uint32 state) OVERRIDE {
  57     IBusInputContextHandlerInterface* input_context =
  58         IBusBridge::Get()->GetInputContextHandler();
  59     if (input_context)
  60       input_context->ForwardKeyEvent(keyval, keycode, state);
  61   }
  62
  63   // IBusEngineService override.
  64   virtual void RequireSurroundingText() OVERRIDE {
  65     // Do nothing.
  66   }
  67
  68   // IBusEngineService override.
  69   virtual void DeleteSurroundingText(int32 offset, uint32 length) OVERRIDE {
  70     IBusInputContextHandlerInterface* input_context =
  71         IBusBridge::Get()->GetInputContextHandler();
  72     if (input_context)
  73       input_context->DeleteSurroundingText(offset, length);
  74   }
  75  private:
  76   DISALLOW_COPY_AND_ASSIGN(IBusEngineServiceDaemonlessImpl);
  77 };
  78
  79 IBusEngineService::IBusEngineService() {
  80 }
  81
  82 IBusEngineService::~IBusEngineService() {
  83 }
  84
  85 // static
  86 IBusEngineService* IBusEngineService::Create() {
  87   return new IBusEngineServiceDaemonlessImpl();
  88 }
  89
  90 }  // namespace chromeos