void TextFinder::findMatchRects(WebVector<WebFloatRect>& outputRects)
{
Vector<WebFloatRect> matchRects;
for (WebLocalFrameImpl* frame = &m_ownerFrame; frame; frame = toWebLocalFrameImpl(frame->traverseNext(false)))
frame->ensureTextFinder().appendFindMatchRects(matchRects);
outputRects = matchRects;
}
void TextFinder::flushCurrentScopingEffort(int identifier)
{
if (!m_ownerFrame.frame() || !m_ownerFrame.frame()->page())
return;
WebLocalFrameImpl* mainFrameImpl = m_ownerFrame.viewImpl()->mainFrameImpl();
mainFrameImpl->ensureTextFinder().decrementFramesScopingCount(identifier);
}
int TextFinder::ordinalOfFirstMatchForFrame(WebLocalFrameImpl* frame) const
{
int ordinal = 0;
WebLocalFrameImpl* mainFrameImpl = m_ownerFrame.viewImpl()->mainFrameImpl();
// Iterate from the main frame up to (but not including) |frame| and
// add up the number of matches found so far.
for (WebLocalFrameImpl* it = mainFrameImpl; it != frame; it = toWebLocalFrameImpl(it->traverseNext(true))) {
TextFinder& finder = it->ensureTextFinder();
if (finder.m_lastMatchCount > 0)
ordinal += finder.m_lastMatchCount;
}
return ordinal;
}
int TextFinder::selectFindMatch(unsigned index, WebRect* selectionRect)
{
ASSERT_WITH_SECURITY_IMPLICATION(index < m_findMatchesCache.size());
RefPtrWillBeRawPtr<Range> range = m_findMatchesCache[index].m_range;
if (!range->boundaryPointsValid() || !range->startContainer()->inDocument())
return -1;
// Check if the match is already selected.
TextFinder& mainFrameTextFinder = m_ownerFrame.viewImpl()->mainFrameImpl()->ensureTextFinder();
WebLocalFrameImpl* activeMatchFrame = mainFrameTextFinder.m_currentActiveMatchFrame;
if (&m_ownerFrame != activeMatchFrame || !m_activeMatch || !areRangesEqual(m_activeMatch.get(), range.get())) {
if (isActiveMatchFrameValid())
activeMatchFrame->ensureTextFinder().setMatchMarkerActive(false);
m_activeMatchIndexInCurrentFrame = m_findMatchesCache[index].m_ordinal - 1;
// Set this frame as the active frame (the one with the active highlight).
mainFrameTextFinder.m_currentActiveMatchFrame = &m_ownerFrame;
m_ownerFrame.viewImpl()->setFocusedFrame(&m_ownerFrame);
m_activeMatch = range.release();
setMarkerActive(m_activeMatch.get(), true);
// Clear any user selection, to make sure Find Next continues on from the match we just activated.
m_ownerFrame.frame()->selection().clear();
// Make sure no node is focused. See http://crbug.com/38700.
m_ownerFrame.frame()->document()->setFocusedElement(nullptr);
}
IntRect activeMatchRect;
IntRect activeMatchBoundingBox = enclosingIntRect(RenderObject::absoluteBoundingBoxRectForRange(m_activeMatch.get()));
if (!activeMatchBoundingBox.isEmpty()) {
if (m_activeMatch->firstNode() && m_activeMatch->firstNode()->renderer()) {
m_activeMatch->firstNode()->renderer()->scrollRectToVisible(
activeMatchBoundingBox, ScrollAlignment::alignCenterIfNeeded, ScrollAlignment::alignCenterIfNeeded);
}
// Zoom to the active match.
activeMatchRect = m_ownerFrame.frameView()->contentsToWindow(activeMatchBoundingBox);
m_ownerFrame.viewImpl()->zoomToFindInPageRect(activeMatchRect);
}
if (selectionRect)
*selectionRect = activeMatchRect;
return ordinalOfFirstMatch() + m_activeMatchIndexInCurrentFrame + 1;
}
int TextFinder::selectNearestFindMatch(const WebFloatPoint& point, WebRect* selectionRect)
{
TextFinder* bestFinder = 0;
int indexInBestFrame = -1;
float distanceInBestFrame = FLT_MAX;
for (WebLocalFrameImpl* frame = &m_ownerFrame; frame; frame = toWebLocalFrameImpl(frame->traverseNext(false))) {
float distanceInFrame;
TextFinder& finder = frame->ensureTextFinder();
int indexInFrame = finder.nearestFindMatch(point, distanceInFrame);
if (distanceInFrame < distanceInBestFrame) {
bestFinder = &finder;
indexInBestFrame = indexInFrame;
distanceInBestFrame = distanceInFrame;
}
}
if (indexInBestFrame != -1)
return bestFinder->selectFindMatch(static_cast<unsigned>(indexInBestFrame), selectionRect);
return -1;
}
bool TextFinder::find(int identifier, const WebString& searchText, const WebFindOptions& options, bool wrapWithinFrame, WebRect* selectionRect)
{
if (!m_ownerFrame.frame() || !m_ownerFrame.frame()->page())
return false;
WebLocalFrameImpl* mainFrameImpl = m_ownerFrame.viewImpl()->mainFrameImpl();
if (!options.findNext)
m_ownerFrame.frame()->page()->unmarkAllTextMatches();
else
setMarkerActive(m_activeMatch.get(), false);
if (m_activeMatch && &m_activeMatch->ownerDocument() != m_ownerFrame.frame()->document())
m_activeMatch = nullptr;
// If the user has selected something since the last Find operation we want
// to start from there. Otherwise, we start searching from where the last Find
// operation left off (either a Find or a FindNext operation).
VisibleSelection selection(m_ownerFrame.frame()->selection().selection());
bool activeSelection = !selection.isNone();
if (activeSelection) {
m_activeMatch = selection.firstRange().get();
m_ownerFrame.frame()->selection().clear();
}
ASSERT(m_ownerFrame.frame() && m_ownerFrame.frame()->view());
const FindOptions findOptions = (options.forward ? 0 : Backwards)
| (options.matchCase ? 0 : CaseInsensitive)
| (wrapWithinFrame ? WrapAround : 0)
| (options.wordStart ? AtWordStarts : 0)
| (options.medialCapitalAsWordStart ? TreatMedialCapitalAsWordStart : 0)
| (options.findNext ? 0 : StartInSelection);
m_activeMatch = m_ownerFrame.frame()->editor().findStringAndScrollToVisible(searchText, m_activeMatch.get(), findOptions);
if (!m_activeMatch) {
// If we're finding next the next active match might not be in the current frame.
// In this case we don't want to clear the matches cache.
if (!options.findNext)
clearFindMatchesCache();
m_ownerFrame.invalidateAll();
return false;
}
#if OS(ANDROID)
m_ownerFrame.viewImpl()->zoomToFindInPageRect(m_ownerFrame.frameView()->contentsToWindow(enclosingIntRect(RenderObject::absoluteBoundingBoxRectForRange(m_activeMatch.get()))));
#endif
setMarkerActive(m_activeMatch.get(), true);
WebLocalFrameImpl* oldActiveFrame = mainFrameImpl->ensureTextFinder().m_currentActiveMatchFrame;
mainFrameImpl->ensureTextFinder().m_currentActiveMatchFrame = &m_ownerFrame;
// Make sure no node is focused. See http://crbug.com/38700.
m_ownerFrame.frame()->document()->setFocusedElement(nullptr);
if (!options.findNext || activeSelection) {
// This is either a Find operation or a Find-next from a new start point
// due to a selection, so we set the flag to ask the scoping effort
// to find the active rect for us and report it back to the UI.
m_locatingActiveRect = true;
} else {
if (oldActiveFrame != &m_ownerFrame) {
if (options.forward)
m_activeMatchIndexInCurrentFrame = 0;
else
m_activeMatchIndexInCurrentFrame = m_lastMatchCount - 1;
} else {
if (options.forward)
++m_activeMatchIndexInCurrentFrame;
else
--m_activeMatchIndexInCurrentFrame;
if (m_activeMatchIndexInCurrentFrame + 1 > m_lastMatchCount)
m_activeMatchIndexInCurrentFrame = 0;
if (m_activeMatchIndexInCurrentFrame == -1)
m_activeMatchIndexInCurrentFrame = m_lastMatchCount - 1;
}
if (selectionRect) {
*selectionRect = m_ownerFrame.frameView()->contentsToWindow(m_activeMatch->boundingBox());
reportFindInPageSelection(*selectionRect, m_activeMatchIndexInCurrentFrame + 1, identifier);
}
}
return true;
}
void TextFinder::scopeStringMatches(int identifier, const WebString& searchText, const WebFindOptions& options, bool reset)
{
if (reset) {
// This is a brand new search, so we need to reset everything.
// Scoping is just about to begin.
m_scopingInProgress = true;
// Need to keep the current identifier locally in order to finish the
// request in case the frame is detached during the process.
m_findRequestIdentifier = identifier;
// Clear highlighting for this frame.
LocalFrame* frame = m_ownerFrame.frame();
if (frame && frame->page() && frame->editor().markedTextMatchesAreHighlighted())
frame->page()->unmarkAllTextMatches();
// Clear the tickmarks and results cache.
clearFindMatchesCache();
// Clear the counters from last operation.
m_lastMatchCount = 0;
m_nextInvalidateAfter = 0;
m_resumeScopingFromRange = nullptr;
// The view might be null on detached frames.
if (frame && frame->page())
m_ownerFrame.viewImpl()->mainFrameImpl()->ensureTextFinder().m_framesScopingCount++;
// Now, defer scoping until later to allow find operation to finish quickly.
scopeStringMatchesSoon(identifier, searchText, options, false); // false means just reset, so don't do it again.
return;
}
if (!shouldScopeMatches(searchText)) {
// Note that we want to defer the final update when resetting even if shouldScopeMatches returns false.
// This is done in order to prevent sending a final message based only on the results of the first frame
// since m_framesScopingCount would be 0 as other frames have yet to reset.
finishCurrentScopingEffort(identifier);
return;
}
WebLocalFrameImpl* mainFrameImpl = m_ownerFrame.viewImpl()->mainFrameImpl();
Position searchStart = firstPositionInNode(m_ownerFrame.frame()->document());
Position searchEnd = lastPositionInNode(m_ownerFrame.frame()->document());
ASSERT(searchStart.document() == searchEnd.document());
if (m_resumeScopingFromRange) {
// This is a continuation of a scoping operation that timed out and didn't
// complete last time around, so we should start from where we left off.
ASSERT(m_resumeScopingFromRange->collapsed());
searchStart = m_resumeScopingFromRange->startPosition().next();
if (searchStart.document() != searchEnd.document())
return;
}
// This timeout controls how long we scope before releasing control. This
// value does not prevent us from running for longer than this, but it is
// periodically checked to see if we have exceeded our allocated time.
const double maxScopingDuration = 0.1; // seconds
int matchCount = 0;
bool timedOut = false;
double startTime = currentTime();
do {
// Find next occurrence of the search string.
// FIXME: (http://crbug.com/6818) This WebKit operation may run for longer
// than the timeout value, and is not interruptible as it is currently
// written. We may need to rewrite it with interruptibility in mind, or
// find an alternative.
Position resultStart;
Position resultEnd;
findPlainText(searchStart, searchEnd, searchText, options.matchCase ? 0 : CaseInsensitive, resultStart, resultEnd);
if (resultStart == resultEnd) {
// Not found.
break;
}
RefPtrWillBeRawPtr<Range> resultRange = Range::create(*resultStart.document(), resultStart, resultEnd);
if (resultRange->collapsed()) {
// resultRange will be collapsed if the matched text spans over multiple TreeScopes.
// FIXME: Show such matches to users.
searchStart = resultStart.next();
continue;
}
++matchCount;
// Catch a special case where Find found something but doesn't know what
// the bounding box for it is. In this case we set the first match we find
// as the active rect.
IntRect resultBounds = resultRange->boundingBox();
IntRect activeSelectionRect;
if (m_locatingActiveRect) {
activeSelectionRect = m_activeMatch.get() ?
m_activeMatch->boundingBox() : resultBounds;
}
// If the Find function found a match it will have stored where the
// match was found in m_activeSelectionRect on the current frame. If we
// find this rect during scoping it means we have found the active
// tickmark.
bool foundActiveMatch = false;
if (m_locatingActiveRect && (activeSelectionRect == resultBounds)) {
// We have found the active tickmark frame.
mainFrameImpl->ensureTextFinder().m_currentActiveMatchFrame = &m_ownerFrame;
foundActiveMatch = true;
// We also know which tickmark is active now.
m_activeMatchIndexInCurrentFrame = matchCount - 1;
// To stop looking for the active tickmark, we set this flag.
m_locatingActiveRect = false;
// Notify browser of new location for the selected rectangle.
reportFindInPageSelection(
m_ownerFrame.frameView()->contentsToWindow(resultBounds),
m_activeMatchIndexInCurrentFrame + 1,
identifier);
}
addMarker(resultRange.get(), foundActiveMatch);
m_findMatchesCache.append(FindMatch(resultRange.get(), m_lastMatchCount + matchCount));
// Set the new start for the search range to be the end of the previous
// result range. There is no need to use a VisiblePosition here,
// since findPlainText will use a TextIterator to go over the visible
// text nodes.
searchStart = resultStart.next();
m_resumeScopingFromRange = Range::create(*resultStart.document(), resultStart, resultStart);
timedOut = (currentTime() - startTime) >= maxScopingDuration;
} while (!timedOut);
// Remember what we search for last time, so we can skip searching if more
// letters are added to the search string (and last outcome was 0).
m_lastSearchString = searchText;
if (matchCount > 0) {
m_ownerFrame.frame()->editor().setMarkedTextMatchesAreHighlighted(true);
m_lastMatchCount += matchCount;
// Let the mainframe know how much we found during this pass.
mainFrameImpl->increaseMatchCount(matchCount, identifier);
}
if (timedOut) {
// If we found anything during this pass, we should redraw. However, we
// don't want to spam too much if the page is extremely long, so if we
// reach a certain point we start throttling the redraw requests.
if (matchCount > 0)
invalidateIfNecessary();
// Scoping effort ran out of time, lets ask for another time-slice.
scopeStringMatchesSoon(
identifier,
searchText,
options,
false); // don't reset.
return; // Done for now, resume work later.
}
finishCurrentScopingEffort(identifier);
}
bool TextFinder::find(int identifier, const WebString& searchText, const WebFindOptions& options, bool wrapWithinFrame, WebRect* selectionRect, bool* activeNow)
{
if (!ownerFrame().frame() || !ownerFrame().frame()->page())
return false;
WebLocalFrameImpl* mainFrameImpl = ownerFrame().viewImpl()->mainFrameImpl();
if (!options.findNext)
unmarkAllTextMatches();
else
setMarkerActive(m_activeMatch.get(), false);
if (m_activeMatch && &m_activeMatch->ownerDocument() != ownerFrame().frame()->document())
m_activeMatch = nullptr;
// If the user has selected something since the last Find operation we want
// to start from there. Otherwise, we start searching from where the last Find
// operation left off (either a Find or a FindNext operation).
VisibleSelection selection(ownerFrame().frame()->selection().selection());
bool activeSelection = !selection.isNone();
if (activeSelection) {
m_activeMatch = firstRangeOf(selection).get();
ownerFrame().frame()->selection().clear();
}
ASSERT(ownerFrame().frame() && ownerFrame().frame()->view());
const FindOptions findOptions = (options.forward ? 0 : Backwards)
| (options.matchCase ? 0 : CaseInsensitive)
| (wrapWithinFrame ? WrapAround : 0)
| (options.wordStart ? AtWordStarts : 0)
| (options.medialCapitalAsWordStart ? TreatMedialCapitalAsWordStart : 0)
| (options.findNext ? 0 : StartInSelection);
m_activeMatch = ownerFrame().frame()->editor().findStringAndScrollToVisible(searchText, m_activeMatch.get(), findOptions);
if (!m_activeMatch) {
// If we're finding next the next active match might not be in the current frame.
// In this case we don't want to clear the matches cache.
if (!options.findNext)
clearFindMatchesCache();
ownerFrame().frameView()->invalidatePaintForTickmarks();
return false;
}
// If the user is browsing a page with autosizing, adjust the zoom to the
// column where the next hit has been found. Doing this when autosizing is
// not set will result in a zoom reset on small devices.
if (ownerFrame().frame()->document()->textAutosizer()->pageNeedsAutosizing()) {
ownerFrame().viewImpl()->zoomToFindInPageRect(ownerFrame().frameView()->contentsToRootFrame(enclosingIntRect(LayoutObject::absoluteBoundingBoxRectForRange(m_activeMatch.get()))));
}
WebLocalFrameImpl* oldActiveFrame = mainFrameImpl->ensureTextFinder().m_currentActiveMatchFrame;
mainFrameImpl->ensureTextFinder().m_currentActiveMatchFrame = &ownerFrame();
// Make sure no node is focused. See http://crbug.com/38700.
ownerFrame().frame()->document()->clearFocusedElement();
bool isActive = setMarkerActive(m_activeMatch.get(), true);
if (activeNow)
*activeNow = isActive;
if (!options.findNext || activeSelection || !isActive) {
// This is either a Find operation, a Find-next from a new start point
// due to a selection, or new matches were found during Find-next due
// to DOM alteration (that couldn't be set as active), so we set the
// flag to ask the scoping effort to find the active rect for us and
// report it back to the UI.
m_locatingActiveRect = true;
} else {
if (oldActiveFrame != &ownerFrame()) {
if (options.forward)
m_activeMatchIndexInCurrentFrame = 0;
else
m_activeMatchIndexInCurrentFrame = m_lastMatchCount - 1;
} else {
if (options.forward)
++m_activeMatchIndexInCurrentFrame;
else
--m_activeMatchIndexInCurrentFrame;
if (m_activeMatchIndexInCurrentFrame + 1 > m_lastMatchCount)
m_activeMatchIndexInCurrentFrame = 0;
if (m_activeMatchIndexInCurrentFrame == -1)
m_activeMatchIndexInCurrentFrame = m_lastMatchCount - 1;
}
if (selectionRect) {
*selectionRect = ownerFrame().frameView()->contentsToRootFrame(m_activeMatch->boundingBox());
reportFindInPageSelection(*selectionRect, m_activeMatchIndexInCurrentFrame + 1, identifier);
}
}
return true;
}
