Introduce WebInputMethodController to blink

third_party/WebKit/Source/web/WebFrameWidgetImpl.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 45 matching lines @@
 #include "public/web/WebAutofillClient.h"
 #include "public/web/WebPlugin.h"
 #include "public/web/WebRange.h"
 #include "public/web/WebWidgetClient.h"
 #include "web/CompositionUnderlineVectorBuilder.h"
 #include "web/CompositorMutatorImpl.h"
 #include "web/CompositorProxyClientImpl.h"
 #include "web/ContextMenuAllowedScope.h"
 #include "web/WebDevToolsAgentImpl.h"
 #include "web/WebInputEventConversion.h"
+#include "web/WebInputMethodControllerImpl.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebPluginContainerImpl.h"
 #include "web/WebRemoteFrameImpl.h"
 #include "web/WebViewFrameWidget.h"
 #include "wtf/AutoReset.h"
 #include "wtf/PtrUtil.h"
 #include <memory>
 
 namespace blink {
 
@@ skipping 312 matching lines @@
 
 void WebFrameWidgetImpl::setBaseBackgroundColor(WebColor color) {
   if (m_baseBackgroundColor == color)
     return;
 
   m_baseBackgroundColor = color;
 
   m_localRoot->frameView()->setBaseBackgroundColor(color);
 }
 
+WebInputMethodControllerImpl*
+WebFrameWidgetImpl::getActiveWebInputMethodController() const {
+  return WebInputMethodControllerImpl::fromFrame(
+      focusedLocalFrameAvailableForIme());
+}
+
 void WebFrameWidgetImpl::scheduleAnimation() {
   if (m_layerTreeView) {
     m_layerTreeView->setNeedsBeginFrame();
     return;
   }
   if (m_client)
     m_client->scheduleAnimation();
 }
 
 CompositorProxyClient* WebFrameWidgetImpl::createCompositorProxyClient() {
@@ skipping 68 matching lines @@
         if (autofillClient)
           autofillClient->setIgnoreTextChanges(false);
       }
       m_imeAcceptEvents = false;
     }
   }
 }
 
 // TODO(ekaramad):This method is almost duplicated in WebViewImpl as well. This
 // code needs to be refactored  (http://crbug.com/629721).
-bool WebFrameWidgetImpl::setComposition(
-    const WebString& text,
-    const WebVector<WebCompositionUnderline>& underlines,
-    int selectionStart,
-    int selectionEnd) {
-  LocalFrame* focused = focusedLocalFrameAvailableForIme();
-  if (!focused)
-    return false;
-
-  if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
-    return plugin->setComposition(text, underlines, selectionStart,
-                                  selectionEnd);
-
-  // The input focus has been moved to another WebWidget object.
-  // We should use this |editor| object only to complete the ongoing
-  // composition.
-  InputMethodController& inputMethodController =
-      focused->inputMethodController();
-  if (!focused->editor().canEdit() && !inputMethodController.hasComposition())
-    return false;
-
-  // We should verify the parent node of this IME composition node are
-  // editable because JavaScript may delete a parent node of the composition
-  // node. In this case, WebKit crashes while deleting texts from the parent
-  // node, which doesn't exist any longer.
-  const EphemeralRange range =
-      inputMethodController.compositionEphemeralRange();
-  if (range.isNotNull()) {
-    Node* node = range.startPosition().computeContainerNode();
-    focused->document()->updateStyleAndLayoutTree();
-    if (!node || !hasEditableStyle(*node))
-      return false;
-  }
-
-  // A keypress event is canceled. If an ongoing composition exists, then the
-  // keydown event should have arisen from a handled key (e.g., backspace).
-  // In this case we ignore the cancellation and continue; otherwise (no
-  // ongoing composition) we exit and signal success only for attempts to
-  // clear the composition.
-  if (m_suppressNextKeypressEvent && !inputMethodController.hasComposition())
-    return text.isEmpty();
-
-  UserGestureIndicator gestureIndicator(DocumentUserGestureToken::create(
-      focused->document(), UserGestureToken::NewGesture));
-
-  // When the range of composition underlines overlap with the range between
-  // selectionStart and selectionEnd, WebKit somehow won't paint the selection
-  // at all (see InlineTextBox::paint() function in InlineTextBox.cpp).
-  // But the selection range actually takes effect.
-  inputMethodController.setComposition(
-      String(text), CompositionUnderlineVectorBuilder(underlines),
-      selectionStart, selectionEnd);
-
-  return text.isEmpty() || inputMethodController.hasComposition();
-}
-
-// TODO(ekaramad):These methods are almost duplicated in WebViewImpl as well.
-// This code needs to be refactored  (http://crbug.com/629721).
-bool WebFrameWidgetImpl::commitText(const WebString& text,
-                                    int relativeCaretPosition) {
-  LocalFrame* focused = focusedLocalFrameAvailableForIme();
-  if (!focused)
-    return false;
-
-  UserGestureIndicator gestureIndicator(DocumentUserGestureToken::create(
-      focused->document(), UserGestureToken::NewGesture));
-
-  if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
-    return plugin->commitText(text, relativeCaretPosition);
-
-  return focused->inputMethodController().commitText(text,
-                                                     relativeCaretPosition);
-}
-
-bool WebFrameWidgetImpl::finishComposingText(
-    ConfirmCompositionBehavior selectionBehavior) {
-  LocalFrame* focused = focusedLocalFrameAvailableForIme();
-  if (!focused)
-    return false;
-
-  if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
-    return plugin->finishComposingText(selectionBehavior);
-
-  // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
-  // needs to be audited.  See http://crbug.com/590369 for more details.
-  focused->document()->updateStyleAndLayoutIgnorePendingStylesheets();
-
-  return focused->inputMethodController().finishComposingText(
-      selectionBehavior == KeepSelection
-          ? InputMethodController::KeepSelection
-          : InputMethodController::DoNotKeepSelection);
-}
-
-// TODO(ekaramad):This method is almost duplicated in WebViewImpl as well. This
-// code needs to be refactored  (http://crbug.com/629721).
 WebRange WebFrameWidgetImpl::compositionRange() {
   LocalFrame* focused = focusedLocalFrameAvailableForIme();
   if (!focused)
     return WebRange();
 
   const EphemeralRange range =
       focused->inputMethodController().compositionEphemeralRange();
   if (range.isNull())
     return WebRange();
 
@@ skipping 620 matching lines @@
   return nullptr;
 }
 
 LocalFrame* WebFrameWidgetImpl::focusedLocalFrameAvailableForIme() const {
   if (!m_imeAcceptEvents)
     return nullptr;
   return focusedLocalFrameInWidget();
 }
 
 }  // namespace blink