265 lines
12 KiB
C++
265 lines
12 KiB
C++
/*
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* Copyright (C) 2017-2021 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "MarkedText.h"
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#include "Document.h"
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#include "DocumentMarkerController.h"
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#include "Editor.h"
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#include "ElementRuleCollector.h"
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#include "HighlightData.h"
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#include "HighlightRegister.h"
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#include "RenderBoxModelObject.h"
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#include "RenderText.h"
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#include "RenderedDocumentMarker.h"
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#include "RuntimeEnabledFeatures.h"
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#include "TextBoxSelectableRange.h"
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#include <algorithm>
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#include <wtf/HashSet.h>
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namespace WebCore {
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Vector<MarkedText> MarkedText::subdivide(const Vector<MarkedText>& markedTexts, OverlapStrategy overlapStrategy)
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{
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if (markedTexts.isEmpty())
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return { };
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struct Offset {
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enum Kind { Begin, End };
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Kind kind;
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unsigned value; // Copy of markedText.startOffset/endOffset to avoid the need to branch based on kind.
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const MarkedText* markedText;
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};
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// 1. Build table of all offsets.
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Vector<Offset> offsets;
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ASSERT(markedTexts.size() < std::numeric_limits<unsigned>::max() / 2);
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unsigned numberOfMarkedTexts = markedTexts.size();
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unsigned numberOfOffsets = 2 * numberOfMarkedTexts;
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offsets.reserveInitialCapacity(numberOfOffsets);
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for (auto& markedText : markedTexts) {
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offsets.uncheckedAppend({ Offset::Begin, markedText.startOffset, &markedText });
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offsets.uncheckedAppend({ Offset::End, markedText.endOffset, &markedText });
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}
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// 2. Sort offsets such that begin offsets are in paint order and end offsets are in reverse paint order.
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std::sort(offsets.begin(), offsets.end(), [] (const Offset& a, const Offset& b) {
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return a.value < b.value || (a.value == b.value && a.kind == b.kind && a.kind == Offset::Begin && a.markedText->type < b.markedText->type)
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|| (a.value == b.value && a.kind == b.kind && a.kind == Offset::End && a.markedText->type > b.markedText->type);
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});
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// 3. Compute intersection.
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Vector<MarkedText> result;
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result.reserveInitialCapacity(numberOfMarkedTexts);
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HashSet<const MarkedText*> processedMarkedTexts;
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unsigned offsetSoFar = offsets[0].value;
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for (unsigned i = 1; i < numberOfOffsets; ++i) {
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if (offsets[i].value > offsets[i - 1].value) {
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if (overlapStrategy == OverlapStrategy::Frontmost) {
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std::optional<unsigned> frontmost;
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for (unsigned j = 0; j < i; ++j) {
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if (!processedMarkedTexts.contains(offsets[j].markedText) && (!frontmost || offsets[j].markedText->type > offsets[*frontmost].markedText->type))
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frontmost = j;
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}
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if (frontmost)
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result.append({ offsetSoFar, offsets[i].value, offsets[*frontmost].markedText->type, offsets[*frontmost].markedText->marker, offsets[*frontmost].markedText->highlightName });
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} else {
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// The appended marked texts may not be in paint order. We will fix this up at the end of this function.
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for (unsigned j = 0; j < i; ++j) {
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if (!processedMarkedTexts.contains(offsets[j].markedText))
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result.append({ offsetSoFar, offsets[i].value, offsets[j].markedText->type, offsets[j].markedText->marker, offsets[j].markedText->highlightName });
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}
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}
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offsetSoFar = offsets[i].value;
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}
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if (offsets[i].kind == Offset::End)
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processedMarkedTexts.add(offsets[i].markedText);
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}
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// Fix up; sort the marked texts so that they are in paint order.
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if (overlapStrategy == OverlapStrategy::None)
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std::sort(result.begin(), result.end(), [] (const MarkedText& a, const MarkedText& b) { return a.startOffset < b.startOffset || (a.startOffset == b.startOffset && a.type < b.type); });
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return result;
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}
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Vector<MarkedText> MarkedText::collectForHighlights(RenderText& renderer, RenderBoxModelObject& parentRenderer, const TextBoxSelectableRange& selectableRange, PaintPhase phase)
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{
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Vector<MarkedText> markedTexts;
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HighlightData highlightData;
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if (RuntimeEnabledFeatures::sharedFeatures().highlightAPIEnabled()) {
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auto& parentStyle = parentRenderer.style();
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if (auto highlightRegister = renderer.document().highlightRegisterIfExists()) {
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for (auto& highlight : highlightRegister->map()) {
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auto renderStyle = parentRenderer.getUncachedPseudoStyle({ PseudoId::Highlight, highlight.key }, &parentStyle);
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if (!renderStyle)
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continue;
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if (renderStyle->textDecorationsInEffect().isEmpty() && phase == PaintPhase::Decoration)
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continue;
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for (auto& rangeData : highlight.value->rangesData()) {
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if (!highlightData.setRenderRange(rangeData))
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continue;
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auto [highlightStart, highlightEnd] = highlightData.rangeForTextBox(renderer, selectableRange);
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if (highlightStart < highlightEnd)
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markedTexts.append({ highlightStart, highlightEnd, MarkedText::Highlight, nullptr, highlight.key });
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}
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}
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}
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}
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#if ENABLE(APP_HIGHLIGHTS)
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if (auto appHighlightRegister = renderer.document().appHighlightRegisterIfExists()) {
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if (appHighlightRegister->highlightsVisibility() == HighlightVisibility::Visible) {
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for (auto& highlight : appHighlightRegister->map()) {
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for (auto& rangeData : highlight.value->rangesData()) {
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if (!highlightData.setRenderRange(rangeData))
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continue;
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auto [highlightStart, highlightEnd] = highlightData.rangeForTextBox(renderer, selectableRange);
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if (highlightStart < highlightEnd)
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markedTexts.append({ highlightStart, highlightEnd, MarkedText::AppHighlight });
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}
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}
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}
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}
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#endif
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return markedTexts;
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}
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Vector<MarkedText> MarkedText::collectForDocumentMarkers(RenderText& renderer, const TextBoxSelectableRange& selectableRange, PaintPhase phase)
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{
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if (!renderer.textNode())
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return { };
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Vector<RenderedDocumentMarker*> markers = renderer.document().markers().markersFor(*renderer.textNode());
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auto markedTextTypeForMarkerType = [] (DocumentMarker::MarkerType type) {
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switch (type) {
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case DocumentMarker::Spelling:
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return MarkedText::SpellingError;
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case DocumentMarker::Grammar:
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return MarkedText::GrammarError;
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case DocumentMarker::CorrectionIndicator:
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return MarkedText::Correction;
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case DocumentMarker::TextMatch:
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return MarkedText::TextMatch;
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case DocumentMarker::DictationAlternatives:
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return MarkedText::DictationAlternatives;
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#if PLATFORM(IOS_FAMILY)
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case DocumentMarker::DictationPhraseWithAlternatives:
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return MarkedText::DictationPhraseWithAlternatives;
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#endif
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default:
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return MarkedText::Unmarked;
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}
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};
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Vector<MarkedText> markedTexts;
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markedTexts.reserveInitialCapacity(markers.size());
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// Give any document markers that touch this run a chance to draw before the text has been drawn.
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// Note end() points at the last char, not one past it like endOffset and ranges do.
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for (auto* marker : markers) {
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// Collect either the background markers or the foreground markers, but not both
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switch (marker->type()) {
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case DocumentMarker::Grammar:
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case DocumentMarker::Spelling:
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case DocumentMarker::CorrectionIndicator:
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case DocumentMarker::Replacement:
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case DocumentMarker::DictationAlternatives:
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#if PLATFORM(IOS_FAMILY)
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// FIXME: Remove the PLATFORM(IOS_FAMILY)-guard.
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case DocumentMarker::DictationPhraseWithAlternatives:
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#endif
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if (phase != MarkedText::PaintPhase::Decoration)
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continue;
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break;
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case DocumentMarker::TextMatch:
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if (!renderer.frame().editor().markedTextMatchesAreHighlighted())
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continue;
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if (phase == MarkedText::PaintPhase::Decoration)
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continue;
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break;
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#if ENABLE(TELEPHONE_NUMBER_DETECTION)
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case DocumentMarker::TelephoneNumber:
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if (!renderer.frame().editor().markedTextMatchesAreHighlighted())
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continue;
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if (phase != MarkedText::PaintPhase::Background)
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continue;
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break;
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#endif
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default:
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continue;
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}
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if (marker->endOffset() <= selectableRange.start) {
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// Marker is completely before this run. This might be a marker that sits before the
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// first run we draw, or markers that were within runs we skipped due to truncation.
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continue;
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}
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if (marker->startOffset() >= selectableRange.start + selectableRange.length) {
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// Marker is completely after this run, bail. A later run will paint it.
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break;
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}
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// Marker intersects this run. Collect it.
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switch (marker->type()) {
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case DocumentMarker::Spelling:
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case DocumentMarker::CorrectionIndicator:
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case DocumentMarker::DictationAlternatives:
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case DocumentMarker::Grammar:
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#if PLATFORM(IOS_FAMILY)
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// FIXME: See <rdar://problem/8933352>. Also, remove the PLATFORM(IOS_FAMILY)-guard.
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case DocumentMarker::DictationPhraseWithAlternatives:
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#endif
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case DocumentMarker::TextMatch: {
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auto [clampedStart, clampedEnd] = selectableRange.clamp(marker->startOffset(), marker->endOffset());
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markedTexts.uncheckedAppend({ clampedStart, clampedEnd, markedTextTypeForMarkerType(marker->type()), marker });
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break;
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}
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case DocumentMarker::Replacement:
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break;
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#if ENABLE(TELEPHONE_NUMBER_DETECTION)
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case DocumentMarker::TelephoneNumber:
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break;
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#endif
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default:
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ASSERT_NOT_REACHED();
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}
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}
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return markedTexts;
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}
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Vector<MarkedText> MarkedText::collectForDraggedContent(RenderText& renderer, const TextBoxSelectableRange& selectableRange)
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{
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auto draggedContentRanges = renderer.draggedContentRangesBetweenOffsets(selectableRange.start, selectableRange.start + selectableRange.length);
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return draggedContentRanges.map([&](const auto& range) -> MarkedText {
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return { selectableRange.clamp(range.first), selectableRange.clamp(range.second), MarkedText::DraggedContent };
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});
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}
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}
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