Index: third_party/WebKit/Source/core/editing/markers/EditingMarkerList.cpp |
diff --git a/third_party/WebKit/Source/core/editing/markers/EditingMarkerList.cpp b/third_party/WebKit/Source/core/editing/markers/EditingMarkerList.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..dee37e4de5afe5adb7906aad66feee9343cf01d8 |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/editing/markers/EditingMarkerList.cpp |
@@ -0,0 +1,148 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "core/editing/markers/EditingMarkerList.h" |
+ |
+#include <algorithm> |
+#include "core/editing/markers/DocumentMarkerController.h" |
+ |
+namespace blink { |
+ |
+namespace { |
+ |
+bool compareByStart(const Member<DocumentMarker>& lhv, |
+ const Member<DocumentMarker>& rhv) { |
+ return lhv->startOffset() < rhv->startOffset(); |
+} |
+ |
+} // namespace |
+ |
+EditingMarkerList::EditingMarkerList( |
+ DocumentMarkerController* documentMarkerController) |
+ : DocumentMarkerList(documentMarkerController), m_markersAreSorted(true) {} |
+ |
+bool EditingMarkerList::isEditingMarkerList() const { |
+ return true; |
+} |
+ |
+void EditingMarkerList::clear() { |
+ m_markers.clear(); |
+ m_markersAreSorted = true; |
+} |
+ |
+void EditingMarkerList::removeMarkers( |
+ unsigned startOffset, |
+ int length, |
+ bool shouldRemovePartiallyOverlappingMarkers, |
+ bool* didRemoveMarker) { |
+ unsigned endOffset = startOffset + length; |
+ size_t markerIndex = 0; |
+ if (m_markersAreSorted) { |
+ markerIndex = |
+ getPosOfFirstMarkerNotEndingBefore(startOffset) - m_markers.begin(); |
+ } |
+ |
+ for (; markerIndex < m_markers.size();) { |
+ DocumentMarker& marker = *m_markers.at(markerIndex); |
+ if (!m_markersAreSorted) { |
+ if (marker.endOffset() <= startOffset) { |
+ ++markerIndex; |
+ continue; |
+ } |
+ } |
+ |
+ if (marker.startOffset() >= endOffset) { |
+ if (m_markersAreSorted) |
+ break; |
+ ++markerIndex; |
+ continue; |
+ } |
+ |
+ // pitch the old marker |
+ m_markers.remove(markerIndex); |
Xiaocheng
2017/03/24 03:57:47
The handling of each marker in the removal range i
rlanday
2017/03/24 17:45:49
Yeah, I think we can add a helper method that just
|
+ *didRemoveMarker = true; |
+ |
+ if (shouldRemovePartiallyOverlappingMarkers) { |
+ // 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()) { |
Xiaocheng
2017/03/24 03:57:47
The case |startOffset > marker.startOffset() && en
rlanday
2017/03/24 17:45:48
I'm pretty sure this case is handled (it goes thro
|
+ DocumentMarker* newLeft = new DocumentMarker(marker); |
+ newLeft->setEndOffset(startOffset); |
+ if (m_markersAreSorted) { |
+ m_markers.insert(markerIndex, *newLeft); |
+ // Move to the marker after the inserted one. |
+ ++markerIndex; |
+ } else { |
+ // For the unsorted case, we just stick the new marker at the end of the |
+ // list. The loop will eventually run on it but that's not a problem |
+ // since it's known to be outside the range being removed. |
+ m_markers.push_back(*newLeft); |
+ } |
+ } |
+ if (marker.endOffset() > endOffset) { |
+ DocumentMarker* newRight = new DocumentMarker(marker); |
+ newRight->setStartOffset(endOffset); |
+ if (m_markersAreSorted) { |
+ m_markers.insert(markerIndex, *newRight); |
+ // Move to the marker after the inserted one. |
+ ++markerIndex; |
+ } else { |
+ m_markers.push_back(*newRight); |
+ } |
+ } |
+ } |
+} |
+ |
+bool EditingMarkerList::shiftMarkers(unsigned offset, |
Xiaocheng
2017/03/24 03:57:47
This function is completely the same as TextMatchM
rlanday
2017/03/24 17:45:48
Oh...I think at one point, I thought I could optim
|
+ unsigned oldLength, |
+ unsigned newLength) { |
+ bool didShift = false; |
+ for (auto it = m_markers.begin(); it != m_markers.end(); ++it) { |
+ DocumentMarker& marker = **it; |
+ |
+ DocumentMarker::ShiftMarkerResult result = |
+ marker.getShiftedMarkerPosition(offset, oldLength, newLength); |
+ if (result.shouldRemoveMarker) { |
+ m_markers.remove(it - m_markers.begin()); |
+ --it; |
+ |
+ didShift = true; |
+ } else if (result.newStartOffset != marker.startOffset() || |
+ result.newEndOffset != marker.endOffset()) { |
+ marker.setStartOffset(result.newStartOffset); |
+ marker.setEndOffset(result.newEndOffset); |
+ |
+ didShift = true; |
+ } |
+ } |
+ |
+ return didShift; |
+} |
+ |
+void EditingMarkerList::insert(DocumentMarker* marker) { |
+ DCHECK(marker->type() == allowedMarkerType()); |
+ if (m_markersAreSorted && !m_markers.isEmpty() && |
+ m_markers.back()->endOffset() > marker->startOffset()) |
+ m_markersAreSorted = false; |
+ m_markers.push_back(marker); |
+} |
+ |
+void EditingMarkerList::sortMarkerList() { |
+ if (m_markersAreSorted) |
+ return; |
+ |
+ std::sort(m_markers.begin(), m_markers.end(), compareByStart); |
+ |
+ m_markersAreSorted = true; |
+} |
+ |
+DEFINE_TRACE(EditingMarkerList) { |
+ visitor->trace(m_markers); |
+ DocumentMarkerList::trace(visitor); |
+} |
+ |
+} // namespace blink |