New InputMethod api for Views.

views/ime/mock_input_method.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/mock_input_method.h"
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "ui/base/keycodes/keyboard_codes.h"
+#include "views/events/event.h"
+#include "views/widget/widget.h"
+
+namespace views {
+
+MockInputMethod::MockInputMethod()
+    : delegate_(NULL),
+      widget_(NULL),
+      focused_view_(NULL),
+      composition_changed_(false),
+      focus_changed_(false),
+      text_input_type_changed_(false),
+      caret_bounds_changed_(false),
+      cancel_composition_called_(false),
+      locale_("en-US"),
+      direction_(base::i18n::LEFT_TO_RIGHT),
+      active_(true) {
+}
+
+MockInputMethod::~MockInputMethod() {
+  if (widget_) {
+    widget_->GetFocusManager()->RemoveFocusChangeListener(this);
+    widget_ = NULL;
+  }
+}
+
+void MockInputMethod::set_delegate(internal::InputMethodDelegate* delegate) {
+  delegate_ = delegate;
+}
+
+void MockInputMethod::Init(Widget* widget) {
+  DCHECK(widget);
+  DCHECK(widget->GetFocusManager());
+
+  if (widget_) {
+    NOTREACHED() << "The input method is already initialized.";
+    return;
+  }
+
+  widget_ = widget;
+  widget->GetFocusManager()->AddFocusChangeListener(this);
+}
+
+void MockInputMethod::DispatchKeyEvent(const KeyEvent& key) {
+  bool handled = (composition_changed_ || result_text_.length()) &&
+      GetTextInputType() != ui::TEXT_INPUT_TYPE_NONE;
+
+  ClearStates();
+  if (delegate_) {
+    if (handled) {
+      KeyEvent mock_key(ui::ET_KEY_PRESSED, ui::VKEY_PROCESSKEY, key.flags());
+      delegate_->DispatchKeyEventPostIME(mock_key);
+    } else {
+      delegate_->DispatchKeyEventPostIME(key);
+    }
+  }
+
+  if (focus_changed_)
+    return;
+
+  TextInputClient* client = GetTextInputClient();
+  if (client) {
+    if (handled) {
+      if (result_text_.length())
+        client->InsertText(result_text_);
+      if (composition_changed_) {
+        if (composition_.text.length())
+          client->SetComposition(composition_);
+        else
+          client->ClearComposition();
+      }
+    } else {
+      char16 ch = key.GetCharacter();
+      client->InsertChar(ch, key.flags());
+    }
+  }
+
+  ClearResult();
+}
+
+void MockInputMethod::OnTextInputTypeChanged(View* view) {
+  DCHECK_EQ(focused_view_, view);
+  text_input_type_changed_ = true;
+}
+
+void MockInputMethod::OnCaretBoundsChanged(View* view) {
+  DCHECK_EQ(focused_view_, view);
+  caret_bounds_changed_ = true;
+}
+
+void MockInputMethod::CancelComposition(View* view) {
+  DCHECK_EQ(focused_view_, view);
+  cancel_composition_called_ = true;
+  ClearResult();
+}
+
+std::string MockInputMethod::GetInputLocale() {
+  return locale_;
+}
+
+base::i18n::TextDirection MockInputMethod::GetInputTextDirection() {
+  return direction_;
+}
+
+bool MockInputMethod::IsActive() {
+  return active_;
+}
+
+void MockInputMethod::FocusWillChange(View* focused_before, View* focused) {
+  DCHECK_EQ(focused_view_, focused_before);
+  TextInputClient* client = GetTextInputClient();
+  if (client && client->HasComposition())
+    client->ConfirmComposition();
+  focused_view_ = focused;
+  focus_changed_ = true;
+  ClearResult();
+}
+
+ui::TextInputType MockInputMethod::GetTextInputType() const {
+  TextInputClient* client = GetTextInputClient();
+  return client ? client->GetTextInputType() : ui::TEXT_INPUT_TYPE_NONE;
+}
+
+void MockInputMethod::Clear() {
+  ClearStates();
+  ClearResult();
+}
+
+void MockInputMethod::SetCompositionForNextKey(
+    const ui::Composition& composition) {
+  composition_changed_ = true;
+  composition_ = composition;
+}
+
+void MockInputMethod::SetResultForNextKey(const string16& result) {
+  result_text_ = result;
+}
+
+void MockInputMethod::SetInputLocale(const std::string& locale) {
+  if (locale_ != locale) {
+    locale_ = locale;
+    OnInputMethodChanged();
+  }
+}
+
+void MockInputMethod::SetInputTextDirection(
+    base::i18n::TextDirection direction) {
+  if (direction_ != direction) {
+    direction_ = direction;
+    OnInputMethodChanged();
+  }
+}
+
+void MockInputMethod::SetActive(bool active) {
+  if (active_ != active) {
+    active_ = active;
+    OnInputMethodChanged();
+  }
+}
+
+void MockInputMethod::ClearStates() {
+  focus_changed_ = false;
+  text_input_type_changed_ = false;
+  caret_bounds_changed_ = false;
+  cancel_composition_called_ = false;
+}
+
+void MockInputMethod::ClearResult() {
+  composition_.Clear();
+  composition_changed_ = false;
+  result_text_.clear();
+}
+
+TextInputClient* MockInputMethod::GetTextInputClient() const {
+  return focused_view_ ? focused_view_->GetTextInputClient() : NULL;
+}
+
+void MockInputMethod::OnInputMethodChanged() const {
+  TextInputClient* client = GetTextInputClient();
+  if (client)
+    client->OnInputMethodChanged();
+}
+
+}  // namespace views