IME (input method editor) support for Aura, part 3 of 3: Use ui::InputMethod in ash.

ui/views/ime/input_method_bridge.cc

Index: ui/views/ime/input_method_bridge.cc
diff --git a/ui/views/ime/input_method_bridge.cc b/ui/views/ime/input_method_bridge.cc
index 1ca16315a4e874a138a8fdb1a8b6979e982212bd..8eb7807fa5c93090e2aeac2906d1ca0f86066369 100644
--- a/ui/views/ime/input_method_bridge.cc
+++ b/ui/views/ime/input_method_bridge.cc
@@ -15,12 +15,11 @@ InputMethodBridge::InputMethodBridge(internal::InputMethodDelegate* delegate,
                                      ui::InputMethod* host)
     : host_(host),
       context_focused_(false) {
-  DCHECK(host_);
   set_delegate(delegate);
 }
 
 InputMethodBridge::~InputMethodBridge() {
-  if (host_->GetTextInputClient() == this)
+  if (host_ && host_->GetTextInputClient() == this)
     host_->SetFocusedTextInputClient(NULL);
 }
 
@@ -34,7 +33,8 @@ void InputMethodBridge::OnFocus() {
 
   // Ask the system-wide IME to send all TextInputClient messages to |this|
   // object.
-  host_->SetFocusedTextInputClient(this);
+  if (host_)
+    host_->SetFocusedTextInputClient(this);
 
   // TODO(yusukes): We don't need to call OnTextInputTypeChanged() once we move
   // text input type tracker code to ui::InputMethodBase.
@@ -47,7 +47,7 @@ void InputMethodBridge::OnBlur() {
 
   ConfirmCompositionText();
   InputMethodBase::OnBlur();
-  if (host_->GetTextInputClient() == this)
+  if (host_ && host_->GetTextInputClient() == this)
     host_->SetFocusedTextInputClient(NULL);
 }
 
@@ -61,31 +61,31 @@ void InputMethodBridge::DispatchKeyEvent(const KeyEvent& key) {
 }
 
 void InputMethodBridge::OnTextInputTypeChanged(View* view) {
-  if (IsViewFocused(view))
+  if (host_ && IsViewFocused(view))
     host_->OnTextInputTypeChanged(this);
   InputMethodBase::OnTextInputTypeChanged(view);
 }
 
 void InputMethodBridge::OnCaretBoundsChanged(View* view) {
-  if (IsViewFocused(view) && !IsTextInputTypeNone())
+  if (host_ && IsViewFocused(view) && !IsTextInputTypeNone())
     host_->OnCaretBoundsChanged(this);
 }
 
 void InputMethodBridge::CancelComposition(View* view) {
-  if (IsViewFocused(view))
+  if (host_ && IsViewFocused(view))
     host_->CancelComposition(this);
 }
 
 std::string InputMethodBridge::GetInputLocale() {
-  return host_->GetInputLocale();
+  return host_ ? host_->GetInputLocale() : "";
 }
 
 base::i18n::TextDirection InputMethodBridge::GetInputTextDirection() {
-  return host_->GetInputTextDirection();
+  return host_ ? host_->GetInputTextDirection() : base::i18n::UNKNOWN_DIRECTION;
 }
 
 bool InputMethodBridge::IsActive() {
-  return host_->IsActive();
+  return host_ ? host_->IsActive() : false;
 }
 
 // Overridden from TextInputClient. Forward an event from the system-wide IME