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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsFind_h__
#define nsFind_h__
#include "nsIFind.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionParticipant.h"
#include "nsINode.h"
#include "mozilla/intl/Segmenter.h"
#include "mozilla/RangeBoundary.h"
#define NS_FIND_CONTRACTID "@mozilla.org/embedcomp/rangefind;1"
#define NS_FIND_CID \
{0x471f4944, 0x1dd2, 0x11b2, {0x87, 0xac, 0x90, 0xbe, 0x0a, 0x51, 0xd6, 0x09}}
class nsFind : public nsIFind {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_NSIFIND
NS_DECL_CYCLE_COLLECTION_CLASS(nsFind)
// The IDL interface allows to toggle the "find entire words" search mode
// by calling `SetEntireWord()`.
// Internally, it is possible to specify word boundaries at the beginning
// and/or the end of the search pattern.
// `GetEntireWord()` returns true if `mWordStartBounded` and `mWordEndBounded`
// are true.
void SetWordStartBounded(bool aWordStartBounded) {
mWordStartBounded = aWordStartBounded;
}
void SetWordEndBounded(bool aWordEndBounded) {
mWordEndBounded = aWordEndBounded;
}
void SetNodeIndexCache(nsContentUtils::NodeIndexCache* aCache) {
mNodeIndexCache = aCache;
}
already_AddRefed<nsRange> FindFromRangeBoundaries(
const nsAString& aPatText, const mozilla::RangeBoundary& aStartPoint,
const mozilla::RangeBoundary& aEndPoint);
protected:
virtual ~nsFind() = default;
// Parameters set from the interface:
bool mFindBackward = false;
bool mCaseSensitive = false;
bool mMatchDiacritics = false;
bool mWordStartBounded = false;
bool mWordEndBounded = false;
mozilla::intl::WordBreakIteratorUtf16 mWordBreakIter{nullptr};
nsContentUtils::NodeIndexCache* mNodeIndexCache = nullptr;
struct State;
class StateRestorer;
// Extract a character from a string, handling surrogate pairs and
// incrementing the index if a surrogate pair is encountered
char32_t DecodeChar(const char16_t* t2b, int32_t* index) const;
// Determine if a line break can occur between two characters
//
// This could be improved because some languages require more context than two
// characters to determine where line breaks can occur
bool BreakInBetween(char32_t x, char32_t y);
// Get the first character from the next node (last if mFindBackward).
//
// This will mutate the state, but then restore it afterwards.
char32_t PeekNextChar(State&, bool aAlreadyMatching) const;
};
#endif // nsFind_h__
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