Beispiel #1
0
void DocumentMarkerController::addMarker(Node* node, const DocumentMarker& newMarker) 
{
    ASSERT(newMarker.endOffset() >= newMarker.startOffset());
    if (newMarker.endOffset() == newMarker.startOffset())
        return;

    m_possiblyExistingMarkerTypes.add(newMarker.type());

    MarkerList* list = m_markers.get(node);

    if (!list) {
        list = new MarkerList;
        list->append(RenderedDocumentMarker(newMarker));
        m_markers.set(node, list);
    } else {
        RenderedDocumentMarker toInsert(newMarker);
        size_t numMarkers = list->size();
        size_t i;
        // Iterate over all markers whose start offset is less than or equal to the new marker's.
        // If one of them is of the same type as the new marker and touches it or intersects with it
        // (there is at most one), remove it and adjust the new marker's start offset to encompass it.
        for (i = 0; i < numMarkers; ++i) {
            DocumentMarker marker = list->at(i);
            if (marker.startOffset() > toInsert.startOffset())
                break;
            if (marker.type() == toInsert.type() && marker.endOffset() >= toInsert.startOffset()) {
                toInsert.setStartOffset(marker.startOffset());
                list->remove(i);
                numMarkers--;
                break;
            }
        }
        size_t j = i;
        // Iterate over all markers whose end offset is less than or equal to the new marker's,
        // removing markers of the same type as the new marker which touch it or intersect with it,
        // adjusting the new marker's end offset to cover them if necessary.
        while (j < numMarkers) {
            DocumentMarker marker = list->at(j);
            if (marker.startOffset() > toInsert.endOffset())
                break;
            if (marker.type() == toInsert.type()) {
                list->remove(j);
                if (toInsert.endOffset() <= marker.endOffset()) {
                    toInsert.setEndOffset(marker.endOffset());
                    break;
                }
                numMarkers--;
            } else
                j++;
        }
        // At this point i points to the node before which we want to insert.
        list->insert(i, RenderedDocumentMarker(toInsert));
    }

    // repaint the affected node
    if (node->renderer())
        node->renderer()->repaint();
}
void DocumentMarkerController::shiftMarkers(Node* node, unsigned startOffset, int delta)
{
    if (!possiblyHasMarkers(DocumentMarker::AllMarkers()))
        return;
    ASSERT(!m_markers.isEmpty());

    MarkerList* list = m_markers.get(node);
    if (!list)
        return;

    bool docDirty = false;
    for (size_t i = 0; i != list->size(); ) {
        RenderedDocumentMarker& marker = list->at(i);
#if PLATFORM(IOS)
        int targetStartOffset = marker.startOffset() + delta;
        int targetEndOffset = marker.endOffset() + delta;
        if (targetStartOffset >= node->maxCharacterOffset() || targetEndOffset <= 0) {
            list->remove(i);
            continue;
        }
#endif
        if (marker.startOffset() >= startOffset) {
            ASSERT((int)marker.startOffset() + delta >= 0);
            marker.shiftOffsets(delta);
            docDirty = true;

            // Marker moved, so previously-computed rendered rectangle is now invalid
            marker.invalidate();
#if !PLATFORM(IOS)
        }
#else
        // FIXME: Inserting text inside a DocumentMarker does not grow the marker.
        // See <https://bugs.webkit.org/show_bug.cgi?id=62504>.
        } else if (marker.endOffset() > startOffset) {
void DocumentMarkerController::removeMarkersFromList(MarkerMap::iterator iterator, DocumentMarker::MarkerTypes markerTypes)
{
    bool needsRepainting = false;
    bool listCanBeRemoved;

    if (markerTypes == DocumentMarker::AllMarkers()) {
        needsRepainting = true;
        listCanBeRemoved = true;
    } else {
        MarkerList* list = iterator->value.get();

        for (size_t i = 0; i != list->size(); ) {
            DocumentMarker marker = list->at(i);

            // skip nodes that are not of the specified type
            if (!markerTypes.contains(marker.type())) {
                ++i;
                continue;
            }

            // pitch the old marker
            list->remove(i);
            needsRepainting = true;
            // i now is the index of the next marker
        }

        listCanBeRemoved = list->isEmpty();
    }

    if (needsRepainting) {
        if (auto renderer = iterator->key->renderer())
            renderer->repaint();
    }

    if (listCanBeRemoved) {
        m_markers.remove(iterator);
        if (m_markers.isEmpty())
            m_possiblyExistingMarkerTypes = 0;
    }
}
void DocumentMarkerController::removeMarkers(Node* node, unsigned startOffset, int length, DocumentMarker::MarkerTypes markerTypes, RemovePartiallyOverlappingMarkerOrNot shouldRemovePartiallyOverlappingMarker)
{
    if (length <= 0)
        return;

    if (!possiblyHasMarkers(markerTypes))
        return;
    ASSERT(!(m_markers.isEmpty()));

    MarkerList* list = m_markers.get(node);
    if (!list)
        return;

    bool docDirty = false;
    unsigned endOffset = startOffset + length;
    for (size_t i = 0; i < list->size();) {
        DocumentMarker marker = list->at(i);

        // markers are returned in order, so stop if we are now past the specified range
        if (marker.startOffset() >= endOffset)
            break;

        // skip marker that is wrong type or before target
        if (marker.endOffset() <= startOffset || !markerTypes.contains(marker.type())) {
            i++;
            continue;
        }

        // at this point we know that marker and target intersect in some way
        docDirty = true;

        // pitch the old marker
        list->remove(i);

        if (shouldRemovePartiallyOverlappingMarker)
            // Stop here. Don't add resulting slices back.
            continue;

        // add either of the resulting slices that are left after removing target
        if (startOffset > marker.startOffset()) {
            DocumentMarker newLeft = marker;
            newLeft.setEndOffset(startOffset);
            list->insert(i, RenderedDocumentMarker(newLeft));
            // i now points to the newly-inserted node, but we want to skip that one
            i++;
        }
        if (marker.endOffset() > endOffset) {
            DocumentMarker newRight = marker;
            newRight.setStartOffset(endOffset);
            list->insert(i, RenderedDocumentMarker(newRight));
            // i now points to the newly-inserted node, but we want to skip that one
            i++;
        }
    }

    if (list->isEmpty()) {
        m_markers.remove(node);
        if (m_markers.isEmpty())
            m_possiblyExistingMarkerTypes = 0;
    }

    // repaint the affected node
    if (docDirty && node->renderer())
        node->renderer()->repaint();
}