Move DOMSelection.[cpp/h] from core/page to core/editing

Source/core/page/DOMSelection.cpp

Index: Source/core/page/DOMSelection.cpp
diff --git a/Source/core/page/DOMSelection.cpp b/Source/core/page/DOMSelection.cpp
deleted file mode 100644
index 1f042da605830ce0cbbf972fcfa962b2717481f3..0000000000000000000000000000000000000000
--- a/Source/core/page/DOMSelection.cpp
+++ /dev/null
@@ -1,568 +0,0 @@
-/*
- * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
- * Copyright (C) 2012 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:
- *
- * 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.
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
- *     its contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "core/page/DOMSelection.h"
-
-#include "bindings/core/v8/ExceptionMessages.h"
-#include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/ExceptionStatePlaceholder.h"
-#include "core/dom/Document.h"
-#include "core/dom/ExceptionCode.h"
-#include "core/dom/Node.h"
-#include "core/dom/Range.h"
-#include "core/dom/TreeScope.h"
-#include "core/editing/FrameSelection.h"
-#include "core/editing/TextIterator.h"
-#include "core/editing/htmlediting.h"
-#include "core/frame/LocalFrame.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-static Node* selectionShadowAncestor(LocalFrame* frame)
-{
-    Node* node = frame->selection().selection().base().anchorNode();
-    if (!node)
-        return 0;
-
-    if (!node->isInShadowTree())
-        return 0;
-
-    return frame->document()->ancestorInThisScope(node);
-}
-
-DOMSelection::DOMSelection(const TreeScope* treeScope)
-    : DOMWindowProperty(treeScope->rootNode().document().frame())
-    , m_treeScope(treeScope)
-{
-    ScriptWrappable::init(this);
-}
-
-void DOMSelection::clearTreeScope()
-{
-    m_treeScope = nullptr;
-}
-
-const VisibleSelection& DOMSelection::visibleSelection() const
-{
-    ASSERT(m_frame);
-    return m_frame->selection().selection();
-}
-
-static Position anchorPosition(const VisibleSelection& selection)
-{
-    Position anchor = selection.isBaseFirst() ? selection.start() : selection.end();
-    return anchor.parentAnchoredEquivalent();
-}
-
-static Position focusPosition(const VisibleSelection& selection)
-{
-    Position focus = selection.isBaseFirst() ? selection.end() : selection.start();
-    return focus.parentAnchoredEquivalent();
-}
-
-static Position basePosition(const VisibleSelection& selection)
-{
-    return selection.base().parentAnchoredEquivalent();
-}
-
-static Position extentPosition(const VisibleSelection& selection)
-{
-    return selection.extent().parentAnchoredEquivalent();
-}
-
-Node* DOMSelection::anchorNode() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedNode(anchorPosition(visibleSelection()));
-}
-
-int DOMSelection::anchorOffset() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedOffset(anchorPosition(visibleSelection()));
-}
-
-Node* DOMSelection::focusNode() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedNode(focusPosition(visibleSelection()));
-}
-
-int DOMSelection::focusOffset() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedOffset(focusPosition(visibleSelection()));
-}
-
-Node* DOMSelection::baseNode() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedNode(basePosition(visibleSelection()));
-}
-
-int DOMSelection::baseOffset() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedOffset(basePosition(visibleSelection()));
-}
-
-Node* DOMSelection::extentNode() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedNode(extentPosition(visibleSelection()));
-}
-
-int DOMSelection::extentOffset() const
-{
-    if (!m_frame)
-        return 0;
-
-    return shadowAdjustedOffset(extentPosition(visibleSelection()));
-}
-
-bool DOMSelection::isCollapsed() const
-{
-    if (!m_frame || selectionShadowAncestor(m_frame))
-        return true;
-    return !m_frame->selection().isRange();
-}
-
-String DOMSelection::type() const
-{
-    if (!m_frame)
-        return String();
-
-    FrameSelection& selection = m_frame->selection();
-
-    // This is a WebKit DOM extension, incompatible with an IE extension
-    // IE has this same attribute, but returns "none", "text" and "control"
-    // http://msdn.microsoft.com/en-us/library/ms534692(VS.85).aspx
-    if (selection.isNone())
-        return "None";
-    if (selection.isCaret())
-        return "Caret";
-    return "Range";
-}
-
-int DOMSelection::rangeCount() const
-{
-    if (!m_frame)
-        return 0;
-    return m_frame->selection().isNone() ? 0 : 1;
-}
-
-void DOMSelection::collapse(Node* node, int offset, ExceptionState& exceptionState)
-{
-    ASSERT(node);
-    if (!m_frame)
-        return;
-
-    if (offset < 0) {
-        exceptionState.throwDOMException(IndexSizeError, String::number(offset) + " is not a valid offset.");
-        return;
-    }
-
-    if (!isValidForPosition(node))
-        return;
-    RefPtrWillBeRawPtr<Range> range = Range::create(node->document());
-    range->setStart(node, offset, exceptionState);
-    if (exceptionState.hadException())
-        return;
-    range->setEnd(node, offset, exceptionState);
-    if (exceptionState.hadException())
-        return;
-    m_frame->selection().setSelectedRange(range.get(), DOWNSTREAM, m_frame->selection().isDirectional() ? FrameSelection::Directional : FrameSelection::NonDirectional);
-}
-
-void DOMSelection::collapse(Node* node, ExceptionState& exceptionState)
-{
-    collapse(node, 0, exceptionState);
-}
-
-void DOMSelection::collapseToEnd(ExceptionState& exceptionState)
-{
-    if (!m_frame)
-        return;
-
-    const VisibleSelection& selection = m_frame->selection().selection();
-
-    if (selection.isNone()) {
-        exceptionState.throwDOMException(InvalidStateError, "there is no selection.");
-        return;
-    }
-
-    m_frame->selection().moveTo(VisiblePosition(selection.end(), DOWNSTREAM));
-}
-
-void DOMSelection::collapseToStart(ExceptionState& exceptionState)
-{
-    if (!m_frame)
-        return;
-
-    const VisibleSelection& selection = m_frame->selection().selection();
-
-    if (selection.isNone()) {
-        exceptionState.throwDOMException(InvalidStateError, "there is no selection.");
-        return;
-    }
-
-    m_frame->selection().moveTo(VisiblePosition(selection.start(), DOWNSTREAM));
-}
-
-void DOMSelection::empty()
-{
-    if (!m_frame)
-        return;
-    m_frame->selection().clear();
-}
-
-void DOMSelection::setBaseAndExtent(Node* baseNode, int baseOffset, Node* extentNode, int extentOffset, ExceptionState& exceptionState)
-{
-    if (!m_frame)
-        return;
-
-    if (baseOffset < 0) {
-        exceptionState.throwDOMException(IndexSizeError, String::number(baseOffset) + " is not a valid base offset.");
-        return;
-    }
-
-    if (extentOffset < 0) {
-        exceptionState.throwDOMException(IndexSizeError, String::number(extentOffset) + " is not a valid extent offset.");
-        return;
-    }
-
-    if (!isValidForPosition(baseNode) || !isValidForPosition(extentNode))
-        return;
-
-    // FIXME: Eliminate legacy editing positions
-    VisiblePosition visibleBase = VisiblePosition(createLegacyEditingPosition(baseNode, baseOffset), DOWNSTREAM);
-    VisiblePosition visibleExtent = VisiblePosition(createLegacyEditingPosition(extentNode, extentOffset), DOWNSTREAM);
-
-    m_frame->selection().moveTo(visibleBase, visibleExtent);
-}
-
-void DOMSelection::modify(const String& alterString, const String& directionString, const String& granularityString)
-{
-    if (!m_frame)
-        return;
-
-    FrameSelection::EAlteration alter;
-    if (equalIgnoringCase(alterString, "extend"))
-        alter = FrameSelection::AlterationExtend;
-    else if (equalIgnoringCase(alterString, "move"))
-        alter = FrameSelection::AlterationMove;
-    else
-        return;
-
-    SelectionDirection direction;
-    if (equalIgnoringCase(directionString, "forward"))
-        direction = DirectionForward;
-    else if (equalIgnoringCase(directionString, "backward"))
-        direction = DirectionBackward;
-    else if (equalIgnoringCase(directionString, "left"))
-        direction = DirectionLeft;
-    else if (equalIgnoringCase(directionString, "right"))
-        direction = DirectionRight;
-    else
-        return;
-
-    TextGranularity granularity;
-    if (equalIgnoringCase(granularityString, "character"))
-        granularity = CharacterGranularity;
-    else if (equalIgnoringCase(granularityString, "word"))
-        granularity = WordGranularity;
-    else if (equalIgnoringCase(granularityString, "sentence"))
-        granularity = SentenceGranularity;
-    else if (equalIgnoringCase(granularityString, "line"))
-        granularity = LineGranularity;
-    else if (equalIgnoringCase(granularityString, "paragraph"))
-        granularity = ParagraphGranularity;
-    else if (equalIgnoringCase(granularityString, "lineboundary"))
-        granularity = LineBoundary;
-    else if (equalIgnoringCase(granularityString, "sentenceboundary"))
-        granularity = SentenceBoundary;
-    else if (equalIgnoringCase(granularityString, "paragraphboundary"))
-        granularity = ParagraphBoundary;
-    else if (equalIgnoringCase(granularityString, "documentboundary"))
-        granularity = DocumentBoundary;
-    else
-        return;
-
-    m_frame->selection().modify(alter, direction, granularity);
-}
-
-void DOMSelection::extend(Node* node, int offset, ExceptionState& exceptionState)
-{
-    ASSERT(node);
-
-    if (!m_frame)
-        return;
-
-    if (offset < 0) {
-        exceptionState.throwDOMException(IndexSizeError, String::number(offset) + " is not a valid offset.");
-        return;
-    }
-    if (offset > (node->offsetInCharacters() ? caretMaxOffset(node) : (int)node->countChildren())) {
-        exceptionState.throwDOMException(IndexSizeError, String::number(offset) + " is larger than the given node's length.");
-        return;
-    }
-
-    if (!isValidForPosition(node))
-        return;
-
-    // FIXME: Eliminate legacy editing positions
-    m_frame->selection().setExtent(VisiblePosition(createLegacyEditingPosition(node, offset), DOWNSTREAM));
-}
-
-void DOMSelection::extend(Node* node, ExceptionState& exceptionState)
-{
-    // This default value implementation differs from the spec, which says |offset| is not optional.
-    // FIXME: Specify this default value in Selection.idl.
-    extend(node, 0, exceptionState);
-}
-
-PassRefPtrWillBeRawPtr<Range> DOMSelection::getRangeAt(int index, ExceptionState& exceptionState)
-{
-    if (!m_frame)
-        return nullptr;
-
-    if (index < 0 || index >= rangeCount()) {
-        exceptionState.throwDOMException(IndexSizeError, String::number(index) + " is not a valid index.");
-        return nullptr;
-    }
-
-    // If you're hitting this, you've added broken multi-range selection support
-    ASSERT(rangeCount() == 1);
-
-    if (Node* shadowAncestor = selectionShadowAncestor(m_frame)) {
-        ASSERT(!shadowAncestor->isShadowRoot());
-        ContainerNode* container = shadowAncestor->parentOrShadowHostNode();
-        int offset = shadowAncestor->nodeIndex();
-        return Range::create(shadowAncestor->document(), container, offset, container, offset);
-    }
-
-    return m_frame->selection().firstRange();
-}
-
-void DOMSelection::removeAllRanges()
-{
-    if (!m_frame)
-        return;
-    m_frame->selection().clear();
-}
-
-void DOMSelection::addRange(Range* newRange)
-{
-    if (!m_frame)
-        return;
-
-    // FIXME: Should we throw DOMException for error cases below?
-    if (!newRange) {
-        addConsoleError("The given range is null.");
-        return;
-    }
-
-    if (!newRange->startContainer()) {
-        addConsoleError("The given range has no container. Perhaps 'detach()' has been invoked on it?");
-        return;
-    }
-
-    FrameSelection& selection = m_frame->selection();
-
-    if (selection.isNone()) {
-        selection.setSelectedRange(newRange, VP_DEFAULT_AFFINITY);
-        return;
-    }
-
-    RefPtrWillBeRawPtr<Range> originalRange = selection.firstRange();
-
-    if (originalRange->startContainer()->document() != newRange->startContainer()->document()) {
-        addConsoleError("The given range does not belong to the current selection's document.");
-        return;
-    }
-    if (originalRange->startContainer()->treeScope() != newRange->startContainer()->treeScope()) {
-        addConsoleError("The given range and the current selection belong to two different document fragments.");
-        return;
-    }
-
-    if (originalRange->compareBoundaryPoints(Range::START_TO_END, newRange, ASSERT_NO_EXCEPTION) < 0
-        || newRange->compareBoundaryPoints(Range::START_TO_END, originalRange.get(), ASSERT_NO_EXCEPTION) < 0) {
-        addConsoleError("Discontiguous selection is not supported.");
-        return;
-    }
-
-    // FIXME: "Merge the ranges if they intersect" is Blink-specific behavior; other browsers supporting discontiguous
-    // selection (obviously) keep each Range added and return it in getRangeAt(). But it's unclear if we can really
-    // do the same, since we don't support discontiguous selection. Further discussions at
-    // <https://code.google.com/p/chromium/issues/detail?id=353069>.
-
-    Range* start = originalRange->compareBoundaryPoints(Range::START_TO_START, newRange, ASSERT_NO_EXCEPTION) < 0 ? originalRange.get() : newRange;
-    Range* end = originalRange->compareBoundaryPoints(Range::END_TO_END, newRange, ASSERT_NO_EXCEPTION) < 0 ? newRange : originalRange.get();
-    RefPtrWillBeRawPtr<Range> merged = Range::create(originalRange->startContainer()->document(), start->startContainer(), start->startOffset(), end->endContainer(), end->endOffset());
-    EAffinity affinity = selection.selection().affinity();
-    selection.setSelectedRange(merged.get(), affinity);
-}
-
-void DOMSelection::deleteFromDocument()
-{
-    if (!m_frame)
-        return;
-
-    FrameSelection& selection = m_frame->selection();
-
-    if (selection.isNone())
-        return;
-
-    RefPtrWillBeRawPtr<Range> selectedRange = selection.selection().toNormalizedRange();
-    if (!selectedRange)
-        return;
-
-    selectedRange->deleteContents(ASSERT_NO_EXCEPTION);
-
-    setBaseAndExtent(selectedRange->startContainer(), selectedRange->startOffset(), selectedRange->startContainer(), selectedRange->startOffset(), ASSERT_NO_EXCEPTION);
-}
-
-bool DOMSelection::containsNode(const Node* n, bool allowPartial) const
-{
-    if (!m_frame)
-        return false;
-
-    FrameSelection& selection = m_frame->selection();
-
-    if (!n || m_frame->document() != n->document() || selection.isNone())
-        return false;
-
-    unsigned nodeIndex = n->nodeIndex();
-    RefPtrWillBeRawPtr<Range> selectedRange = selection.selection().toNormalizedRange();
-
-    ContainerNode* parentNode = n->parentNode();
-    if (!parentNode)
-        return false;
-
-    TrackExceptionState exceptionState;
-    bool nodeFullySelected = Range::compareBoundaryPoints(parentNode, nodeIndex, selectedRange->startContainer(), selectedRange->startOffset(), exceptionState) >= 0 && !exceptionState.hadException()
-        && Range::compareBoundaryPoints(parentNode, nodeIndex + 1, selectedRange->endContainer(), selectedRange->endOffset(), exceptionState) <= 0 && !exceptionState.hadException();
-    if (exceptionState.hadException())
-        return false;
-    if (nodeFullySelected)
-        return true;
-
-    bool nodeFullyUnselected = (Range::compareBoundaryPoints(parentNode, nodeIndex, selectedRange->endContainer(), selectedRange->endOffset(), exceptionState) > 0 && !exceptionState.hadException())
-        || (Range::compareBoundaryPoints(parentNode, nodeIndex + 1, selectedRange->startContainer(), selectedRange->startOffset(), exceptionState) < 0 && !exceptionState.hadException());
-    ASSERT(!exceptionState.hadException());
-    if (nodeFullyUnselected)
-        return false;
-
-    return allowPartial || n->isTextNode();
-}
-
-void DOMSelection::selectAllChildren(Node* n, ExceptionState& exceptionState)
-{
-    if (!n)
-        return;
-
-    // This doesn't (and shouldn't) select text node characters.
-    setBaseAndExtent(n, 0, n, n->countChildren(), exceptionState);
-}
-
-String DOMSelection::toString()
-{
-    if (!m_frame)
-        return String();
-
-    return plainText(m_frame->selection().selection().toNormalizedRange().get());
-}
-
-Node* DOMSelection::shadowAdjustedNode(const Position& position) const
-{
-    if (position.isNull())
-        return 0;
-
-    Node* containerNode = position.containerNode();
-    Node* adjustedNode = m_treeScope->ancestorInThisScope(containerNode);
-
-    if (!adjustedNode)
-        return 0;
-
-    if (containerNode == adjustedNode)
-        return containerNode;
-
-    ASSERT(!adjustedNode->isShadowRoot());
-    return adjustedNode->parentOrShadowHostNode();
-}
-
-int DOMSelection::shadowAdjustedOffset(const Position& position) const
-{
-    if (position.isNull())
-        return 0;
-
-    Node* containerNode = position.containerNode();
-    Node* adjustedNode = m_treeScope->ancestorInThisScope(containerNode);
-
-    if (!adjustedNode)
-        return 0;
-
-    if (containerNode == adjustedNode)
-        return position.computeOffsetInContainerNode();
-
-    return adjustedNode->nodeIndex();
-}
-
-bool DOMSelection::isValidForPosition(Node* node) const
-{
-    ASSERT(m_frame);
-    if (!node)
-        return true;
-    return node->document() == m_frame->document();
-}
-
-void DOMSelection::addConsoleError(const String& message)
-{
-    if (m_treeScope)
-        m_treeScope->document().addConsoleMessage(JSMessageSource, ErrorMessageLevel, message);
-}
-
-} // namespace blink