--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/editing/InsertTextCommand.cpp Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2005 Apple Computer, 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:
+ * 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
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "InsertTextCommand.h"
+
+#include "CharacterNames.h"
+#include "CSSMutableStyleDeclaration.h"
+#include "CSSComputedStyleDeclaration.h"
+#include "Document.h"
+#include "Element.h"
+#include "EditingText.h"
+#include "Editor.h"
+#include "Frame.h"
+#include "Logging.h"
+#include "HTMLInterchange.h"
+#include "htmlediting.h"
+#include "TextIterator.h"
+#include "TypingCommand.h"
+#include "visible_units.h"
+
+namespace WebCore {
+
+InsertTextCommand::InsertTextCommand(Document *document)
+ : CompositeEditCommand(document), m_charactersAdded(0)
+{
+}
+
+void InsertTextCommand::doApply()
+{
+}
+
+Position InsertTextCommand::prepareForTextInsertion(const Position& p)
+{
+ Position pos = p;
+ // If an anchor was removed and the selection hasn't changed, we restore it.
+ RefPtr<Node> anchor = document()->frame()->editor()->removedAnchor();
+ if (anchor) {
+ insertNodeAt(anchor.get(), pos);
+ document()->frame()->editor()->setRemovedAnchor(0);
+ pos = Position(anchor.get(), 0);
+ }
+ // Prepare for text input by looking at the specified position.
+ // It may be necessary to insert a text node to receive characters.
+ if (!pos.node()->isTextNode()) {
+ RefPtr<Node> textNode = document()->createEditingTextNode("");
+ insertNodeAt(textNode.get(), pos);
+ return Position(textNode.get(), 0);
+ }
+
+ if (isTabSpanTextNode(pos.node())) {
+ RefPtr<Node> textNode = document()->createEditingTextNode("");
+ insertNodeAtTabSpanPosition(textNode.get(), pos);
+ return Position(textNode.get(), 0);
+ }
+
+ return pos;
+}
+
+void InsertTextCommand::input(const String& originalText, bool selectInsertedText)
+{
+ String text = originalText;
+
+ ASSERT(text.find('\n') == -1);
+
+ if (endingSelection().isNone())
+ return;
+
+ if (RenderObject* renderer = endingSelection().start().node()->renderer())
+ if (renderer->style()->collapseWhiteSpace())
+ // Turn all spaces into non breaking spaces, to make sure that they are treated
+ // literally, and aren't collapsed after insertion. They will be rebalanced
+ // (turned into a sequence of regular and non breaking spaces) below.
+ text.replace(' ', noBreakSpace);
+
+ // Delete the current selection.
+ // FIXME: This delete operation blows away the typing style.
+ if (endingSelection().isRange())
+ deleteSelection(false, true, true, false);
+
+ // Insert the character at the leftmost candidate.
+ Position startPosition = endingSelection().start().upstream();
+ // It is possible for the node that contains startPosition to contain only unrendered whitespace,
+ // and so deleteInsignificantText could remove it. Save the position before the node in case that happens.
+ Position positionBeforeStartNode(positionBeforeNode(startPosition.node()));
+ deleteInsignificantText(startPosition.upstream(), startPosition.downstream());
+ if (!startPosition.node()->inDocument())
+ startPosition = positionBeforeStartNode;
+ if (!startPosition.isCandidate())
+ startPosition = startPosition.downstream();
+
+ // FIXME: This typing around anchor behavior doesn't exactly match TextEdit. In TextEdit,
+ // you won't be placed inside a link when typing after it if you've just placed the caret
+ // there with the mouse.
+ startPosition = positionAvoidingSpecialElementBoundary(startPosition, false);
+
+ Position endPosition;
+
+ if (text == "\t") {
+ endPosition = insertTab(startPosition);
+ startPosition = endPosition.previous();
+ removePlaceholderAt(VisiblePosition(startPosition));
+ m_charactersAdded += 1;
+ } else {
+ // Make sure the document is set up to receive text
+ startPosition = prepareForTextInsertion(startPosition);
+ removePlaceholderAt(VisiblePosition(startPosition));
+ Text *textNode = static_cast<Text *>(startPosition.node());
+ int offset = startPosition.offset();
+
+ insertTextIntoNode(textNode, offset, text);
+ endPosition = Position(textNode, offset + text.length());
+
+ // The insertion may require adjusting adjacent whitespace, if it is present.
+ rebalanceWhitespaceAt(endPosition);
+ // Rebalancing on both sides isn't necessary if we've inserted a space.
+ if (originalText != " ")
+ rebalanceWhitespaceAt(startPosition);
+
+ m_charactersAdded += text.length();
+ }
+
+ setEndingSelection(Selection(startPosition, endPosition, DOWNSTREAM));
+
+ // Handle the case where there is a typing style.
+ // FIXME: Improve typing style.
+ // See this bug: <rdar://problem/3769899> Implementation of typing style needs improvement
+ CSSMutableStyleDeclaration* typingStyle = document()->frame()->typingStyle();
+ RefPtr<CSSComputedStyleDeclaration> endingStyle = endPosition.computedStyle();
+ endingStyle->diff(typingStyle);
+ if (typingStyle && typingStyle->length() > 0)
+ applyStyle(typingStyle);
+
+ if (!selectInsertedText)
+ setEndingSelection(Selection(endingSelection().end(), endingSelection().affinity()));
+}
+
+Position InsertTextCommand::insertTab(const Position& pos)
+{
+ Position insertPos = VisiblePosition(pos, DOWNSTREAM).deepEquivalent();
+
+ Node *node = insertPos.node();
+ unsigned int offset = insertPos.offset();
+
+ // keep tabs coalesced in tab span
+ if (isTabSpanTextNode(node)) {
+ insertTextIntoNode(static_cast<Text *>(node), offset, "\t");
+ return Position(node, offset + 1);
+ }
+
+ // create new tab span
+ RefPtr<Element> spanNode = createTabSpanElement(document());
+
+ // place it
+ if (!node->isTextNode()) {
+ insertNodeAt(spanNode.get(), insertPos);
+ } else {
+ Text *textNode = static_cast<Text *>(node);
+ if (offset >= textNode->length()) {
+ insertNodeAfter(spanNode.get(), textNode);
+ } else {
+ // split node to make room for the span
+ // NOTE: splitTextNode uses textNode for the
+ // second node in the split, so we need to
+ // insert the span before it.
+ if (offset > 0)
+ splitTextNode(textNode, offset);
+ insertNodeBefore(spanNode.get(), textNode);
+ }
+ }
+
+ // return the position following the new tab
+ return Position(spanNode->lastChild(), spanNode->lastChild()->caretMaxOffset());
+}
+
+bool InsertTextCommand::isInsertTextCommand() const
+{
+ return true;
+}
+
+}