1 /*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "core/editing/TextInsertionBaseCommand.h"
28
29 #include "bindings/v8/ExceptionStatePlaceholder.h"
30 #include "core/events/BeforeTextInsertedEvent.h"
31 #include "core/dom/Element.h"
32 #include "core/dom/Node.h"
33 #include "core/editing/FrameSelection.h"
34 #include "core/frame/Frame.h"
35
36 namespace WebCore {
37
TextInsertionBaseCommand(Document & document)38 TextInsertionBaseCommand::TextInsertionBaseCommand(Document& document)
39 : CompositeEditCommand(document)
40 {
41 }
42
applyTextInsertionCommand(Frame * frame,PassRefPtr<TextInsertionBaseCommand> command,const VisibleSelection & selectionForInsertion,const VisibleSelection & endingSelection)43 void TextInsertionBaseCommand::applyTextInsertionCommand(Frame* frame, PassRefPtr<TextInsertionBaseCommand> command, const VisibleSelection& selectionForInsertion, const VisibleSelection& endingSelection)
44 {
45 bool changeSelection = selectionForInsertion != endingSelection;
46 if (changeSelection) {
47 command->setStartingSelection(selectionForInsertion);
48 command->setEndingSelection(selectionForInsertion);
49 }
50 command->apply();
51 if (changeSelection) {
52 command->setEndingSelection(endingSelection);
53 frame->selection().setSelection(endingSelection);
54 }
55 }
56
dispatchBeforeTextInsertedEvent(const String & text,const VisibleSelection & selectionForInsertion,bool insertionIsForUpdatingComposition)57 String dispatchBeforeTextInsertedEvent(const String& text, const VisibleSelection& selectionForInsertion, bool insertionIsForUpdatingComposition)
58 {
59 if (insertionIsForUpdatingComposition)
60 return text;
61
62 String newText = text;
63 if (Node* startNode = selectionForInsertion.start().containerNode()) {
64 if (startNode->rootEditableElement()) {
65 // Send BeforeTextInsertedEvent. The event handler will update text if necessary.
66 RefPtr<BeforeTextInsertedEvent> evt = BeforeTextInsertedEvent::create(text);
67 startNode->rootEditableElement()->dispatchEvent(evt, IGNORE_EXCEPTION);
68 newText = evt->text();
69 }
70 }
71 return newText;
72 }
73
canAppendNewLineFeedToSelection(const VisibleSelection & selection)74 bool canAppendNewLineFeedToSelection(const VisibleSelection& selection)
75 {
76 Node* node = selection.rootEditableElement();
77 if (!node)
78 return false;
79
80 RefPtr<BeforeTextInsertedEvent> event = BeforeTextInsertedEvent::create(String("\n"));
81 node->dispatchEvent(event, IGNORE_EXCEPTION);
82 return event->text().length();
83 }
84
85 }
86