Add input method support for views and integrate ibus input framework

views/ime/ime_context.cc

+// Copyright (c) 2011 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 "views/ime/ime_context.h"
+
+namespace {
+
+#ifdef USE_DUMMY_IME_CONTEXT
+class DummyIMEContext : public views::IMEContext {
+ public:
+  explicit DummyIMEContext(views::View* view)
+    : views::IMEContext(view) {}
+  virtual ~DummyIMEContext() {}
+
+  // views::IMEContext implementations:
+  virtual void Focus() {}
+  virtual void Blur() {}
+  virtual void Reset() {}
+  virtual bool FilterKeyEvent(const views::KeyEvent& event) {
+    return false;
+  }
+  virtual void SetCursorLocation(const gfx::Rect& caret_rect) {}
+  virtual void SetSurrounding(const string16& text, int cursor_pos) {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DummyIMEContext);
+};
+#endif  // USE_DUMMY_IME_CONTEXT
+
+}  // namespace
+
+namespace views {
+
+IMEContext::IMEContext(View* view)
+  : view_(view) ,
+    commit_text_listener_(NULL),
+    composition_listener_(NULL),
+    forward_key_event_listener_(NULL),
+    surrounding_listener_(NULL) {
+}
+
+void IMEContext::CommitText(const string16& text) {
+  if (commit_text_listener_)
+    commit_text_listener_->OnCommitText(this, text);
+}
+
+void IMEContext::StartComposition() {
+  if (composition_listener_)
+    composition_listener_->OnStartComposition(this);
+}
+
+void IMEContext::EndComposition() {
+  if (composition_listener_)
+    composition_listener_->OnEndComposition(this);
+}
+
+void IMEContext::SetComposition(const string16& text,
+                                const CompositionAttributeList& attributes,
+                                uint32 cursor_pos) {
+  if (composition_listener_)
+    composition_listener_->OnSetComposition(this, text, attributes, cursor_pos);
+}
+
+void IMEContext::ForwardKeyEvent(const KeyEvent& event) {
+  if (forward_key_event_listener_)
+    forward_key_event_listener_->OnForwardKeyEvent(this, event);
+}
+
+bool IMEContext::SetSurroundingActive(bool active) {
+  if (surrounding_listener_)
+    return surrounding_listener_->OnSetSurroundingActive(this, active);
+  return false;
+}
+
+bool IMEContext::DeleteSurrounding(int offset, int nchars) {
+  if (surrounding_listener_)
+    return surrounding_listener_->OnDeleteSurrounding(this, offset, nchars);
+  return false;
+}
+
+#ifdef USE_DUMMY_IME_CONTEXT
+IMEContext* IMEContext::Create(View* view) {
+  return new DummyIMEContext(view);
+}
+#endif  // USE_DUMMY_IME_CONTEXT
+
+}  // namespace views