#pragma once
#include "FindOptions.h"
#include "Range.h"
#include "TextIteratorBehavior.h"
#include <wtf/Vector.h>
#include <wtf/text/StringView.h>
namespace WebCore {
class InlineTextBox;
class RenderText;
class RenderTextFragment;
namespace SimpleLineLayout {
class RunResolver;
}
WEBCORE_EXPORT String plainText(const Range*, TextIteratorBehavior = TextIteratorDefaultBehavior, bool isDisplayString = false);
WEBCORE_EXPORT String plainTextReplacingNoBreakSpace(const Range*, TextIteratorBehavior = TextIteratorDefaultBehavior, bool isDisplayString = false);
Ref<Range> findPlainText(const Range&, const String&, FindOptions);
WEBCORE_EXPORT Ref<Range> findClosestPlainText(const Range&, const String&, FindOptions, unsigned);
WEBCORE_EXPORT bool hasAnyPlainText(const Range&, TextIteratorBehavior = TextIteratorDefaultBehavior);
bool findPlainText(const String& document, const String&, FindOptions);
bool isRendererReplacedElement(RenderObject*);
class BitStack {
public:
BitStack();
~BitStack();
void push(bool);
void pop();
bool top() const;
unsigned size() const;
private:
unsigned m_size;
Vector<unsigned, 1> m_words;
};
class TextIteratorCopyableText {
public:
TextIteratorCopyableText()
: m_singleCharacter(0)
, m_offset(0)
, m_length(0)
{
}
StringView text() const { return m_singleCharacter ? StringView(&m_singleCharacter, 1) : StringView(m_string).substring(m_offset, m_length); }
void appendToStringBuilder(StringBuilder&) const;
void reset();
void set(String&&);
void set(String&&, unsigned offset, unsigned length);
void set(UChar);
private:
UChar m_singleCharacter;
String m_string;
unsigned m_offset;
unsigned m_length;
};
class TextIterator {
public:
WEBCORE_EXPORT explicit TextIterator(const Range*, TextIteratorBehavior = TextIteratorDefaultBehavior);
WEBCORE_EXPORT ~TextIterator();
bool atEnd() const { return !m_positionNode; }
WEBCORE_EXPORT void advance();
StringView text() const { ASSERT(!atEnd()); return m_text; }
WEBCORE_EXPORT Ref<Range> range() const;
WEBCORE_EXPORT Node* node() const;
const TextIteratorCopyableText& copyableText() const { ASSERT(!atEnd()); return m_copyableText; }
void appendTextToStringBuilder(StringBuilder& builder) const { copyableText().appendToStringBuilder(builder); }
WEBCORE_EXPORT static int rangeLength(const Range*, bool spacesForReplacedElements = false);
WEBCORE_EXPORT static RefPtr<Range> rangeFromLocationAndLength(ContainerNode* scope, int rangeLocation, int rangeLength, bool spacesForReplacedElements = false);
WEBCORE_EXPORT static bool getLocationAndLengthFromRange(Node* scope, const Range*, size_t& location, size_t& length);
WEBCORE_EXPORT static Ref<Range> subrange(Range& entireRange, int characterOffset, int characterCount);
private:
void exitNode(Node*);
bool shouldRepresentNodeOffsetZero();
bool shouldEmitSpaceBeforeAndAfterNode(Node&);
void representNodeOffsetZero();
bool handleTextNode();
bool handleReplacedElement();
bool handleNonTextNode();
void handleTextBox();
void handleTextNodeFirstLetter(RenderTextFragment&);
void emitCharacter(UChar, Node& characterNode, Node* offsetBaseNode, int textStartOffset, int textEndOffset);
void emitText(Text& textNode, RenderText&, int textStartOffset, int textEndOffset);
Node* baseNodeForEmittingNewLine() const;
const TextIteratorBehavior m_behavior { TextIteratorDefaultBehavior };
Node* m_node { nullptr };
int m_offset { 0 };
bool m_handledNode { false };
bool m_handledChildren { false };
BitStack m_fullyClippedStack;
Node* m_startContainer { nullptr };
int m_startOffset { 0 };
Node* m_endContainer { nullptr };
int m_endOffset { 0 };
Node* m_pastEndNode { nullptr };
Node* m_positionNode { nullptr };
mutable Node* m_positionOffsetBaseNode { nullptr };
mutable int m_positionStartOffset { 0 };
mutable int m_positionEndOffset { 0 };
TextIteratorCopyableText m_copyableText;
StringView m_text;
Node* m_nodeForAdditionalNewline { nullptr };
InlineTextBox* m_textBox { nullptr };
InlineTextBox* m_remainingTextBox { nullptr };
RenderText* m_firstLetterText { nullptr };
Text* m_lastTextNode { nullptr };
bool m_lastTextNodeEndedWithCollapsedSpace { false };
UChar m_lastCharacter { 0 };
bool m_nextRunNeedsWhitespace { false };
unsigned m_accumulatedSimpleTextLengthInFlow { 0 };
Text* m_previousSimpleTextNodeInFlow { nullptr };
std::unique_ptr<SimpleLineLayout::RunResolver> m_flowRunResolverCache;
Vector<InlineTextBox*> m_sortedTextBoxes;
size_t m_sortedTextBoxesPosition { 0 };
bool m_hasEmitted { false };
bool m_handledFirstLetter { false };
};
class SimplifiedBackwardsTextIterator {
public:
explicit SimplifiedBackwardsTextIterator(const Range&);
bool atEnd() const { return !m_positionNode; }
void advance();
StringView text() const { ASSERT(!atEnd()); return m_text; }
WEBCORE_EXPORT Ref<Range> range() const;
Node* node() const { ASSERT(!atEnd()); return m_node; }
private:
void exitNode();
bool handleTextNode();
RenderText* handleFirstLetter(int& startOffset, int& offsetInNode);
bool handleReplacedElement();
bool handleNonTextNode();
void emitCharacter(UChar, Node&, int startOffset, int endOffset);
bool advanceRespectingRange(Node*);
const TextIteratorBehavior m_behavior { TextIteratorDefaultBehavior };
Node* m_node { nullptr };
int m_offset { 0 };
bool m_handledNode { false };
bool m_handledChildren { false };
BitStack m_fullyClippedStack;
Node* m_startContainer { nullptr };
int m_startOffset { 0 };
Node* m_endContainer { nullptr };
int m_endOffset { 0 };
Node* m_positionNode { nullptr };
int m_positionStartOffset { 0 };
int m_positionEndOffset { 0 };
TextIteratorCopyableText m_copyableText;
StringView m_text;
Text* m_lastTextNode { nullptr };
UChar m_lastCharacter { 0 };
bool m_havePassedStartContainer { false };
bool m_shouldHandleFirstLetter { false };
};
class CharacterIterator {
public:
explicit CharacterIterator(const Range&, TextIteratorBehavior = TextIteratorDefaultBehavior);
bool atEnd() const { return m_underlyingIterator.atEnd(); }
void advance(int numCharacters);
StringView text() const { return m_underlyingIterator.text().substring(m_runOffset); }
Ref<Range> range() const;
bool atBreak() const { return m_atBreak; }
int characterOffset() const { return m_offset; }
private:
TextIterator m_underlyingIterator;
int m_offset;
int m_runOffset;
bool m_atBreak;
};
class BackwardsCharacterIterator {
public:
explicit BackwardsCharacterIterator(const Range&);
bool atEnd() const { return m_underlyingIterator.atEnd(); }
void advance(int numCharacters);
Ref<Range> range() const;
private:
SimplifiedBackwardsTextIterator m_underlyingIterator;
int m_offset;
int m_runOffset;
bool m_atBreak;
};
class WordAwareIterator {
public:
explicit WordAwareIterator(const Range&);
bool atEnd() const { return !m_didLookAhead && m_underlyingIterator.atEnd(); }
void advance();
StringView text() const;
private:
TextIterator m_underlyingIterator;
TextIteratorCopyableText m_previousText;
Vector<UChar> m_buffer;
bool m_didLookAhead;
};
}