Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 161 insertions, 0 deletions

diff --git a/Source/WebCore/editing/FormatBlockCommand.cpp b/Source/WebCore/editing/FormatBlockCommand.cpp
new file mode 100644
index 0000000..e43f330
--- /dev/null
+++ b/Source/WebCore/editing/FormatBlockCommand.cpp
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2006 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 "Element.h"
+#include "FormatBlockCommand.h"
+#include "Document.h"
+#include "htmlediting.h"
+#include "HTMLElement.h"
+#include "HTMLNames.h"
+#include "Range.h"
+#include "visible_units.h"
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+static Node* enclosingBlockToSplitTreeTo(Node* startNode);
+static bool isElementForFormatBlock(const QualifiedName& tagName);
+static inline bool isElementForFormatBlock(Node* node)
+{
+    return node->isElementNode() && isElementForFormatBlock(static_cast<Element*>(node)->tagQName());
+}
+
+FormatBlockCommand::FormatBlockCommand(Document* document, const QualifiedName& tagName) 
+    : ApplyBlockElementCommand(document, tagName)
+    , m_didApply(false)
+{
+}
+
+void FormatBlockCommand::formatSelection(const VisiblePosition& startOfSelection, const VisiblePosition& endOfSelection)
+{
+    if (!isElementForFormatBlock(tagName()))
+        return;
+    ApplyBlockElementCommand::formatSelection(startOfSelection, endOfSelection);
+    m_didApply = true;
+}
+
+void FormatBlockCommand::formatRange(const Position& start, const Position& end, const Position& endOfSelection, RefPtr<Element>& blockNode)
+{
+    Node* nodeToSplitTo = enclosingBlockToSplitTreeTo(start.node());
+    RefPtr<Node> outerBlock = (start.node() == nodeToSplitTo) ? start.node() : splitTreeToNode(start.node(), nodeToSplitTo);
+    RefPtr<Node> nodeAfterInsertionPosition = outerBlock;
+
+    RefPtr<Range> range = Range::create(document(), start, endOfSelection);
+    Element* refNode = enclosingBlockFlowElement(end);
+    Element* root = editableRootForPosition(start);
+    if (isElementForFormatBlock(refNode->tagQName()) && start == startOfBlock(start)
+        && (end == endOfBlock(end) || isNodeVisiblyContainedWithin(refNode, range.get()))
+        && refNode != root && !root->isDescendantOf(refNode)) {
+        // Already in a block element that only contains the current paragraph
+        if (refNode->hasTagName(tagName()))
+            return;
+        nodeAfterInsertionPosition = refNode;
+    }
+
+    if (!blockNode) {
+        // Create a new blockquote and insert it as a child of the root editable element. We accomplish
+        // this by splitting all parents of the current paragraph up to that point.
+        blockNode = createBlockElement();
+        insertNodeBefore(blockNode, nodeAfterInsertionPosition);
+    }
+
+    Position lastParagraphInBlockNode = lastPositionInNode(blockNode.get());
+    bool wasEndOfParagraph = isEndOfParagraph(lastParagraphInBlockNode);
+
+    moveParagraphWithClones(start, end, blockNode.get(), outerBlock.get());
+
+    if (wasEndOfParagraph && !isEndOfParagraph(lastParagraphInBlockNode) && !isStartOfParagraph(lastParagraphInBlockNode))
+        insertBlockPlaceholder(lastParagraphInBlockNode);
+}
+    
+Element* FormatBlockCommand::elementForFormatBlockCommand(Range* range)
+{
+    if (!range)
+        return 0;
+
+    ExceptionCode ec;
+    Node* commonAncestor = range->commonAncestorContainer(ec);
+    while (commonAncestor && !isElementForFormatBlock(commonAncestor))
+        commonAncestor = commonAncestor->parentNode();
+
+    if (!commonAncestor)
+        return 0;
+
+    Element* rootEditableElement = range->startContainer()->rootEditableElement();
+    if (!rootEditableElement || commonAncestor->contains(rootEditableElement))
+        return 0;
+
+    ASSERT(commonAncestor->isElementNode());
+    return static_cast<Element*>(commonAncestor);
+}
+
+bool isElementForFormatBlock(const QualifiedName& tagName)
+{
+    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, blockTags, ());
+    if (blockTags.isEmpty()) {
+        blockTags.add(addressTag);
+        blockTags.add(articleTag);
+        blockTags.add(asideTag);
+        blockTags.add(blockquoteTag);
+        blockTags.add(ddTag);
+        blockTags.add(divTag);
+        blockTags.add(dlTag);
+        blockTags.add(dtTag);
+        blockTags.add(footerTag);
+        blockTags.add(h1Tag);
+        blockTags.add(h2Tag);
+        blockTags.add(h3Tag);
+        blockTags.add(h4Tag);
+        blockTags.add(h5Tag);
+        blockTags.add(h6Tag);
+        blockTags.add(headerTag);
+        blockTags.add(hgroupTag);
+        blockTags.add(navTag);
+        blockTags.add(pTag);
+        blockTags.add(preTag);
+        blockTags.add(sectionTag);
+    }
+    return blockTags.contains(tagName);
+}
+
+Node* enclosingBlockToSplitTreeTo(Node* startNode)
+{
+    Node* lastBlock = startNode;
+    for (Node* n = startNode; n; n = n->parentNode()) {
+        if (!n->isContentEditable())
+            return lastBlock;
+        if (isTableCell(n) || n->hasTagName(bodyTag) || !n->parentNode() || !n->parentNode()->isContentEditable() || isElementForFormatBlock(n))
+            return n;
+        if (isBlock(n))
+            lastBlock = n;
+        if (isListElement(n))
+            return n->parentNode()->isContentEditable() ? n->parentNode() : n;
+    }
+    return lastBlock;
+}
+
+}