Remove the 2-level input method system & InputMethodBridge.

ui/views/controls/textfield/textfield_unittest.cc

Index: ui/views/controls/textfield/textfield_unittest.cc
diff --git a/ui/views/controls/textfield/textfield_unittest.cc b/ui/views/controls/textfield/textfield_unittest.cc
index a02456ec6b8a3c2d66a250542ffa610665b104be..118ecef74aa714ac606cb4871f77ca48fe7cfff5 100644
--- a/ui/views/controls/textfield/textfield_unittest.cc
+++ b/ui/views/controls/textfield/textfield_unittest.cc
@@ -13,14 +13,20 @@
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/accessibility/ax_view_state.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_tree_host.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/clipboard/scoped_clipboard_writer.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
+#include "ui/base/ime/input_method_base.h"
+#include "ui/base/ime/input_method_delegate.h"
+#include "ui/base/ime/input_method_factory.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/base/ui_base_switches_util.h"
 #include "ui/events/event.h"
+#include "ui/events/event_processor.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/events/test/event_generator.h"
@@ -30,7 +36,6 @@
 #include "ui/views/controls/textfield/textfield_model.h"
 #include "ui/views/controls/textfield/textfield_test_api.h"
 #include "ui/views/focus/focus_manager.h"
-#include "ui/views/ime/mock_input_method.h"
 #include "ui/views/test/test_views_delegate.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/test/widget_test.h"
@@ -59,6 +64,184 @@ namespace {
 
 const base::char16 kHebrewLetterSamekh = 0x05E1;
 
+class MockInputMethod : public ui::InputMethodBase {
+ public:
+  MockInputMethod();
+  ~MockInputMethod() override;
+
+  // Overridden from InputMethod:
+  bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
+                                NativeEventResult* result) override;
+  bool DispatchKeyEvent(const ui::KeyEvent& key) override;
+  void OnTextInputTypeChanged(const ui::TextInputClient* client) override;
+  void OnCaretBoundsChanged(const ui::TextInputClient* client) override {}
+  void CancelComposition(const ui::TextInputClient* client) override;
+  void OnInputLocaleChanged() override {}
+  std::string GetInputLocale() override;
+  bool IsActive() override;
+  bool IsCandidatePopupOpen() const override;
+  void ShowImeIfNeeded() override {}
+
+  bool untranslated_ime_message_called() const {
+    return untranslated_ime_message_called_;
+  }
+  bool text_input_type_changed() const { return text_input_type_changed_; }
+  bool cancel_composition_called() const { return cancel_composition_called_; }
+
+  // Clears all internal states and result.
+  void Clear();
+
+  void SetCompositionTextForNextKey(const ui::CompositionText& composition);
+  void SetResultTextForNextKey(const base::string16& result);
+
+ private:
+  // Overridden from InputMethodBase.
+  void OnWillChangeFocusedClient(ui::TextInputClient* focused_before,
+                                 ui::TextInputClient* focused) override;
+
+  // Clears boolean states defined below.
+  void ClearStates();
+
+  // Whether a mock composition or result is scheduled for the next key event.
+  bool HasComposition();
+
+  // Clears only composition information and result text.
+  void ClearComposition();
+
+  // Composition information for the next key event. It'll be cleared
+  // automatically after dispatching the next key event.
+  ui::CompositionText composition_;
+
+  // Result text for the next key event. It'll be cleared automatically after
+  // dispatching the next key event.
+  base::string16 result_text_;
+
+  // Record call state of corresponding methods. They will be set to false
+  // automatically before dispatching a key event.
+  bool untranslated_ime_message_called_;
+  bool text_input_type_changed_;
+  bool cancel_composition_called_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockInputMethod);
+};
+
+MockInputMethod::MockInputMethod()
+    : untranslated_ime_message_called_(false),
+      text_input_type_changed_(false),
+      cancel_composition_called_(false) {
+}
+
+MockInputMethod::~MockInputMethod() {
+}
+
+bool MockInputMethod::OnUntranslatedIMEMessage(const base::NativeEvent& event,
+                                               NativeEventResult* result) {
+  if (result)
+    *result = NativeEventResult();
+  return false;
+}
+
+bool MockInputMethod::DispatchKeyEvent(const ui::KeyEvent& key) {
+  // Checks whether the key event is from EventGenerator on Windows which will
+  // generate key event for WM_CHAR.
+  // The MockInputMethod will insert char on WM_KEYDOWN so ignore WM_CHAR here.
+  if (key.is_char() && key.HasNativeEvent())
+    return true;
+
+  bool handled = !IsTextInputTypeNone() && HasComposition();
+  ClearStates();
+  if (handled) {
+    DCHECK(!key.is_char());
+    ui::KeyEvent mock_key(ui::ET_KEY_PRESSED, ui::VKEY_PROCESSKEY, key.flags());
+    DispatchKeyEventPostIME(mock_key);
+  } else {
+    DispatchKeyEventPostIME(key);
+  }
+
+  ui::TextInputClient* client = GetTextInputClient();
+  if (client) {
+    if (handled) {
+      if (result_text_.length())
+        client->InsertText(result_text_);
+      if (composition_.text.length())
+        client->SetCompositionText(composition_);
+      else
+        client->ClearCompositionText();
+    } else if (key.type() == ui::ET_KEY_PRESSED) {
+      base::char16 ch = key.GetCharacter();
+      if (ch)
+        client->InsertChar(ch, key.flags());
+    }
+  }
+
+  ClearComposition();
+  return true;
+}
+
+void MockInputMethod::OnTextInputTypeChanged(
+    const ui::TextInputClient* client) {
+  if (IsTextInputClientFocused(client))
+    text_input_type_changed_ = true;
+  InputMethodBase::OnTextInputTypeChanged(client);
+}
+
+void MockInputMethod::CancelComposition(const ui::TextInputClient* client) {
+  if (IsTextInputClientFocused(client)) {
+    cancel_composition_called_ = true;
+    ClearComposition();
+  }
+}
+
+std::string MockInputMethod::GetInputLocale() {
+  return "en-US";
+}
+
+bool MockInputMethod::IsActive() {
+  return true;
+}
+
+bool MockInputMethod::IsCandidatePopupOpen() const {
+  return false;
+}
+
+void MockInputMethod::OnWillChangeFocusedClient(
+    ui::TextInputClient* focused_before,
+    ui::TextInputClient* focused) {
+  ui::TextInputClient* client = GetTextInputClient();
+  if (client && client->HasCompositionText())
+    client->ConfirmCompositionText();
+  ClearComposition();
+}
+
+void MockInputMethod::Clear() {
+  ClearStates();
+  ClearComposition();
+}
+
+void MockInputMethod::SetCompositionTextForNextKey(
+    const ui::CompositionText& composition) {
+  composition_ = composition;
+}
+
+void MockInputMethod::SetResultTextForNextKey(const base::string16& result) {
+  result_text_ = result;
+}
+
+void MockInputMethod::ClearStates() {
+  untranslated_ime_message_called_ = false;
+  text_input_type_changed_ = false;
+  cancel_composition_called_ = false;
+}
+
+bool MockInputMethod::HasComposition() {
+  return composition_.text.length() || result_text_.length();
+}
+
+void MockInputMethod::ClearComposition() {
+  composition_.Clear();
+  result_text_.clear();
+}
+
 // A Textfield wrapper to intercept OnKey[Pressed|Released]() ressults.
 class TestTextfield : public views::Textfield {
  public:
@@ -171,6 +354,8 @@ class TextfieldTest : public ViewsTestBase, public TextfieldController {
         on_before_user_action_(0),
         on_after_user_action_(0),
         copied_to_clipboard_(ui::CLIPBOARD_TYPE_LAST) {
+    input_method_ = new MockInputMethod();
+    ui::SetUpInputMethodForTesting(input_method_);
   }
 
   // ::testing::Test:
@@ -224,6 +409,8 @@ class TextfieldTest : public ViewsTestBase, public TextfieldController {
 
     params.bounds = gfx::Rect(100, 100, 100, 100);
     widget_->Init(params);
+    input_method_->SetDelegate(static_cast<ui::internal::InputMethodDelegate*>(
+        widget_->GetNativeWindow()->GetRootWindow()->GetHost()));
     View* container = new View();
     widget_->SetContentsView(container);
     container->AddChildView(textfield_);
@@ -240,9 +427,6 @@ class TextfieldTest : public ViewsTestBase, public TextfieldController {
     model_ = test_api_->model();
     model_->ClearEditHistory();
 
-    input_method_ = new MockInputMethod();
-    widget_->ReplaceInputMethod(input_method_);
-
     // Since the window type is activatable, showing the widget will also
     // activate it. Calling Activate directly is insufficient, since that does
     // not also _focus_ an aura::Window (i.e. using the FocusClient). Both the