[InputEvent] Support |deleteByDrag| and |insertFromDrop|

third_party/WebKit/Source/core/editing/Editor.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 80 matching lines @@
 #include "wtf/text/CharacterNames.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 using namespace WTF;
 using namespace Unicode;
 
 namespace {
 
-void dispatchInputEvent(Element* target, InputEvent::InputType inputType, const String& data, InputEvent::EventIsComposing isComposing)
+void dispatchInputEvent(Element* target, InputEvent::InputType inputType, const String& data, InputEvent::EventIsComposing isComposing, const Document* originalDocument = nullptr)
 {
     if (!RuntimeEnabledFeatures::inputEventEnabled())
         return;
-    if (!target)
+    if (!target || !target->isConnected())
         return;
-    // TODO(chongz): Pass appreciate |ranges| after it's defined on spec.
-    // http://w3c.github.io/editing/input-events.html#dom-inputevent-inputtype
+    if (originalDocument)
+        DCHECK(originalDocument == target->ownerDocument());
     InputEvent* inputEvent = InputEvent::createInput(inputType, data, isComposing, nullptr);
     target->dispatchScopedEvent(inputEvent);
 }
 
 void dispatchInputEventEditableContentChanged(Element* startRoot, Element* endRoot, InputEvent::InputType inputType, const String& data, InputEvent::EventIsComposing isComposing)
 {
-    if (startRoot)
-        dispatchInputEvent(startRoot, inputType, data, isComposing);
-    if (endRoot && endRoot != startRoot)
-        dispatchInputEvent(endRoot, inputType, data, isComposing);
+    const Document* endRootOriginalDocument = endRoot ? endRoot->ownerDocument() : nullptr;
+    if (inputType == InputEvent::InputType::MoveByDragDrop) {
+        // Drag&Drop will be combined into one |MoveSelectionCommand|, we need to split it into |DeleteByDrag| and |InsertFromDrop|.
+        dispatchInputEvent(startRoot, InputEvent::InputType::DeleteByDrag, data, isComposing);
+        dispatchInputEvent(endRoot, InputEvent::InputType::InsertFromDrop, data, isComposing, endRootOriginalDocument);
+        return;
+    }
+
+    dispatchInputEvent(startRoot, inputType, data, isComposing);
+    if (endRoot != startRoot)
+        dispatchInputEvent(endRoot, inputType, data, isComposing, endRootOriginalDocument);
 }
 
 InputEvent::EventIsComposing isComposingFromCommand(const CompositeEditCommand* command)
 {
     if (command->isTypingCommand() && toTypingCommand(command)->compositionType() != TypingCommand::TextCompositionNone)
         return InputEvent::EventIsComposing::IsComposing;
     return InputEvent::EventIsComposing::NotComposing;
 }
 
 } // anonymous namespace
@@ skipping 424 matching lines @@
 
 // TODO(xiaochengh): Merge it with |replaceSelectionWithFragment()|.
 void Editor::replaceSelectionAfterDragging(DocumentFragment* fragment, bool smartReplace, bool plainText)
 {
     ReplaceSelectionCommand::CommandOptions options = ReplaceSelectionCommand::SelectReplacement | ReplaceSelectionCommand::PreventNesting;
     if (smartReplace)
         options |= ReplaceSelectionCommand::SmartReplace;
     if (plainText)
         options |= ReplaceSelectionCommand::MatchStyle;
     DCHECK(frame().document());
-    ReplaceSelectionCommand::create(*frame().document(), fragment, options, InputEvent::InputType::Drag)->apply();
+    ReplaceSelectionCommand::create(*frame().document(), fragment, options, InputEvent::InputType::InsertFromDrop)->apply();
 }
 
 void Editor::moveSelectionAfterDragging(DocumentFragment* fragment, const Position& pos, bool smartInsert, bool smartDelete)
 {
     MoveSelectionCommand::create(fragment, pos, smartInsert, smartDelete)->apply();
 }
 
 EphemeralRange Editor::selectedRange()
 {
     return frame().selection().selection().toNormalizedEphemeralRange();
@@ skipping 839 matching lines @@
 
 DEFINE_TRACE(Editor)
 {
     visitor->trace(m_frame);
     visitor->trace(m_lastEditCommand);
     visitor->trace(m_undoStack);
     visitor->trace(m_mark);
 }
 
 } // namespace blink