1154 lines
29 KiB
C++
1154 lines
29 KiB
C++
/*
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* Copyright (C) 2020-2022 Roy Qu (royqh1979@gmail.com)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "TextBuffer.h"
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#include <QDataStream>
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#include <QFile>
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#include <QTextCodec>
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#include <QTextStream>
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#include <QMutexLocker>
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#include <stdexcept>
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#include "SynEdit.h"
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#include "../utils.h"
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#include "../platform.h"
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#include <QMessageBox>
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#include <cmath>
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SynDocument::SynDocument(const QFont& font, QObject *parent):
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QObject(parent),
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mFontMetrics(font),
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mTabWidth(4),
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mMutex(QMutex::Recursive)
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{
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mAppendNewLineAtEOF = true;
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mFileEndingType = FileEndingType::Windows;
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mIndexOfLongestLine = -1;
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mUpdateCount = 0;
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mCharWidth = mFontMetrics.horizontalAdvance("M");
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}
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static void ListIndexOutOfBounds(int index) {
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throw IndexOutOfRange(index);
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}
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int SynDocument::parenthesisLevels(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index>=0 && Index < mLines.size()) {
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return mLines[Index]->fRange.parenthesisLevel;
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} else
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return 0;
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}
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int SynDocument::bracketLevels(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index>=0 && Index < mLines.size()) {
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return mLines[Index]->fRange.bracketLevel;
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} else
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return 0;
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}
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int SynDocument::braceLevels(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index>=0 && Index < mLines.size()) {
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return mLines[Index]->fRange.braceLevel;
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} else
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return 0;
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}
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//QString SynEditStringList::expandedStrings(int Index)
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//{
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// if (Index>=0 && Index < mList.size()) {
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// if (mList[Index]->fFlags & SynEditStringFlag::sfHasNoTabs)
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// return mList[Index]->fString;
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// else
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// return ExpandString(Index);
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// } else
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// return QString();
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//}
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int SynDocument::lineColumns(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index>=0 && Index < mLines.size()) {
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if (mLines[Index]->fColumns == -1) {
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return calculateLineColumns(Index);
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} else
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return mLines[Index]->fColumns;
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} else
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return 0;
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}
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int SynDocument::leftBraces(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index>=0 && Index < mLines.size()) {
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return mLines[Index]->fRange.leftBraces;
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} else
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return 0;
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}
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int SynDocument::rightBraces(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index>=0 && Index < mLines.size()) {
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return mLines[Index]->fRange.rightBraces;
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} else
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return 0;
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}
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int SynDocument::lengthOfLongestLine() {
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QMutexLocker locker(&mMutex);
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if (mIndexOfLongestLine < 0) {
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int MaxLen = -1;
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mIndexOfLongestLine = -1;
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if (mLines.count() > 0 ) {
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for (int i=0;i<mLines.size();i++) {
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int len = lineColumns(i);
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if (len > MaxLen) {
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MaxLen = len;
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mIndexOfLongestLine = i;
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}
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}
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}
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}
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if (mIndexOfLongestLine >= 0)
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return mLines[mIndexOfLongestLine]->fColumns;
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else
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return 0;
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}
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QString SynDocument::lineBreak() const
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{
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switch(mFileEndingType) {
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case FileEndingType::Linux:
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return "\n";
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case FileEndingType::Windows:
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return "\r\n";
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case FileEndingType::Mac:
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return "\r";
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}
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return "\n";
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}
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SynRangeState SynDocument::ranges(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index>=0 && Index < mLines.size()) {
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return mLines[Index]->fRange;
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} else {
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ListIndexOutOfBounds(Index);
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}
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return SynRangeState();
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}
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void SynDocument::insertItem(int Index, const QString &s)
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{
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beginUpdate();
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PSynDocumentLine line = std::make_shared<SynDocumentLine>();
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line->fString = s;
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mIndexOfLongestLine = -1;
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mLines.insert(Index,line);
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endUpdate();
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}
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void SynDocument::addItem(const QString &s)
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{
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beginUpdate();
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PSynDocumentLine line = std::make_shared<SynDocumentLine>();
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line->fString = s;
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mIndexOfLongestLine = -1;
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mLines.append(line);
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endUpdate();
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}
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bool SynDocument::getAppendNewLineAtEOF()
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{
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QMutexLocker locker(&mMutex);
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return mAppendNewLineAtEOF;
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}
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void SynDocument::setAppendNewLineAtEOF(bool appendNewLineAtEOF)
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{
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QMutexLocker locker(&mMutex);
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mAppendNewLineAtEOF = appendNewLineAtEOF;
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}
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void SynDocument::setRange(int Index, const SynRangeState& ARange)
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{
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QMutexLocker locker(&mMutex);
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if (Index<0 || Index>=mLines.count()) {
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ListIndexOutOfBounds(Index);
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}
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beginUpdate();
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mLines[Index]->fRange = ARange;
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endUpdate();
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}
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QString SynDocument::getString(int Index)
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{
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QMutexLocker locker(&mMutex);
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if (Index<0 || Index>=mLines.count()) {
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return QString();
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}
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return mLines[Index]->fString;
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}
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int SynDocument::count()
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{
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QMutexLocker locker(&mMutex);
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return mLines.count();
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}
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QString SynDocument::text()
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{
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QMutexLocker locker(&mMutex);
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return getTextStr();
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}
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void SynDocument::setText(const QString &text)
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{
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QMutexLocker locker(&mMutex);
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putTextStr(text);
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}
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void SynDocument::setContents(const QStringList &text)
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{
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QMutexLocker locker(&mMutex);
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beginUpdate();
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auto action = finally([this]{
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endUpdate();
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});
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internalClear();
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if (text.count() > 0) {
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mIndexOfLongestLine = -1;
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int FirstAdded = mLines.count();
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foreach (const QString& s,text) {
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addItem(s);
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}
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emit inserted(FirstAdded,text.count());
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}
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}
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QStringList SynDocument::contents()
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{
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QMutexLocker locker(&mMutex);
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QStringList Result;
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SynDocumentLines list = mLines;
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foreach (const PSynDocumentLine& line, list) {
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Result.append(line->fString);
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}
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return Result;
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}
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void SynDocument::beginUpdate()
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{
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if (mUpdateCount == 0) {
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setUpdateState(true);
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}
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mUpdateCount++;
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}
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void SynDocument::endUpdate()
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{
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mUpdateCount--;
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if (mUpdateCount == 0) {
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setUpdateState(false);
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}
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}
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int SynDocument::add(const QString &s)
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{
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QMutexLocker locker(&mMutex);
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beginUpdate();
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int Result = mLines.count();
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insertItem(Result, s);
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emit inserted(Result,1);
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endUpdate();
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return Result;
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}
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void SynDocument::addStrings(const QStringList &Strings)
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{
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QMutexLocker locker(&mMutex);
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if (Strings.count() > 0) {
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mIndexOfLongestLine = -1;
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beginUpdate();
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auto action = finally([this]{
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endUpdate();
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});
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int FirstAdded = mLines.count();
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for (const QString& s:Strings) {
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addItem(s);
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}
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emit inserted(FirstAdded,Strings.count());
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}
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}
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int SynDocument::getTextLength()
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{
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QMutexLocker locker(&mMutex);
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int Result = 0;
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foreach (const PSynDocumentLine& line, mLines ) {
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Result += line->fString.length();
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if (mFileEndingType == FileEndingType::Windows) {
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Result += 2;
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} else {
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Result += 1;
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}
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}
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return Result;
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}
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void SynDocument::clear()
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{
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QMutexLocker locker(&mMutex);
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internalClear();
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}
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void SynDocument::deleteLines(int Index, int NumLines)
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{
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QMutexLocker locker(&mMutex);
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if (NumLines<=0)
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return;
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if ((Index < 0) || (Index >= mLines.count())) {
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ListIndexOutOfBounds(Index);
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}
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beginUpdate();
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auto action = finally([this]{
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endUpdate();
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});
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if (mIndexOfLongestLine>=Index) {
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if (mIndexOfLongestLine <Index+NumLines) {
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mIndexOfLongestLine = -1;
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} else {
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mIndexOfLongestLine -= NumLines;
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}
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}
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int LinesAfter = mLines.count() - (Index + NumLines);
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if (LinesAfter < 0) {
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NumLines = mLines.count() - Index;
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}
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mLines.remove(Index,NumLines);
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emit deleted(Index,NumLines);
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}
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void SynDocument::exchange(int Index1, int Index2)
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{
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QMutexLocker locker(&mMutex);
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if ((Index1 < 0) || (Index1 >= mLines.count())) {
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ListIndexOutOfBounds(Index1);
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}
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if ((Index2 < 0) || (Index2 >= mLines.count())) {
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ListIndexOutOfBounds(Index2);
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}
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beginUpdate();
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PSynDocumentLine temp = mLines[Index1];
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mLines[Index1]=mLines[Index2];
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mLines[Index2]=temp;
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//mList.swapItemsAt(Index1,Index2);
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if (mIndexOfLongestLine == Index1) {
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mIndexOfLongestLine = Index2;
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} else if (mIndexOfLongestLine == Index2) {
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mIndexOfLongestLine = Index1;
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}
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endUpdate();
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}
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void SynDocument::insert(int Index, const QString &s)
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{
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QMutexLocker locker(&mMutex);
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if ((Index < 0) || (Index > mLines.count())) {
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ListIndexOutOfBounds(Index);
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}
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beginUpdate();
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insertItem(Index, s);
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emit inserted(Index,1);
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endUpdate();
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}
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void SynDocument::deleteAt(int Index)
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{
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QMutexLocker locker(&mMutex);
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if ((Index < 0) || (Index >= mLines.count())) {
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ListIndexOutOfBounds(Index);
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}
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beginUpdate();
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if (mIndexOfLongestLine == Index)
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mIndexOfLongestLine = -1;
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else if (mIndexOfLongestLine>Index)
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mIndexOfLongestLine -= 1;
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mLines.removeAt(Index);
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emit deleted(Index,1);
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endUpdate();
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}
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QString SynDocument::getTextStr() const
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{
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QString result;
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for (int i=0;i<mLines.count()-1;i++) {
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const PSynDocumentLine& line = mLines[i];
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result.append(line->fString);
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result.append(lineBreak());
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}
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if (mLines.length()>0) {
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result.append(mLines.back()->fString);
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}
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return result;
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}
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void SynDocument::putString(int Index, const QString &s, bool notify) {
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QMutexLocker locker(&mMutex);
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if (Index == mLines.count()) {
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add(s);
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} else {
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if (Index<0 || Index>=mLines.count()) {
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ListIndexOutOfBounds(Index);
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}
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beginUpdate();
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int oldColumns = mLines[Index]->fColumns;
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mLines[Index]->fString = s;
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calculateLineColumns(Index);
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if (mIndexOfLongestLine == Index && oldColumns>mLines[Index]->fColumns )
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mIndexOfLongestLine = -1;
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else if (mIndexOfLongestLine>=0
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&& mIndexOfLongestLine<mLines.count()
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&& mLines[Index]->fColumns > mLines[mIndexOfLongestLine]->fColumns)
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mIndexOfLongestLine = Index;
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if (notify)
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emit putted(Index,1);
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endUpdate();
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}
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}
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void SynDocument::setUpdateState(bool Updating)
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{
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if (Updating)
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emit changing();
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else
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emit changed();
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}
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int SynDocument::calculateLineColumns(int Index)
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{
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PSynDocumentLine line = mLines[Index];
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line->fColumns = stringColumns(line->fString,0);
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return line->fColumns;
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}
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void SynDocument::insertLines(int Index, int NumLines)
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{
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QMutexLocker locker(&mMutex);
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if (Index<0 || Index>mLines.count()) {
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ListIndexOutOfBounds(Index);
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}
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if (NumLines<=0)
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return;
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beginUpdate();
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auto action = finally([this]{
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endUpdate();
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});
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mIndexOfLongestLine = -1;
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PSynDocumentLine line;
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mLines.insert(Index,NumLines,line);
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for (int i=Index;i<Index+NumLines;i++) {
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line = std::make_shared<SynDocumentLine>();
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mLines[i]=line;
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}
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emit inserted(Index,NumLines);
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}
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bool SynDocument::tryLoadFileByEncoding(QByteArray encodingName, QFile& file) {
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QTextCodec* codec = QTextCodec::codecForName(encodingName);
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if (!codec)
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return false;
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file.reset();
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internalClear();
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QTextCodec::ConverterState state;
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while (true) {
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if (file.atEnd()){
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break;
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}
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QByteArray line = file.readLine();
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if (line.endsWith("\r\n")) {
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line.remove(line.length()-2,2);
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} else if (line.endsWith("\r")) {
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line.remove(line.length()-1,1);
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} else if (line.endsWith("\n")){
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line.remove(line.length()-1,1);
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}
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QString newLine = codec->toUnicode(line.constData(),line.length(),&state);
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if (state.invalidChars>0) {
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return false;
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break;
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}
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addItem(newLine);
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}
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return true;
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}
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const QFontMetrics &SynDocument::fontMetrics() const
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{
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return mFontMetrics;
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}
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void SynDocument::setFontMetrics(const QFont &newFont)
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{
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mFontMetrics = QFontMetrics(newFont);
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mCharWidth = mFontMetrics.horizontalAdvance("M");
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}
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void SynDocument::setTabWidth(int newTabWidth)
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{
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if (mTabWidth!=newTabWidth) {
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mTabWidth = newTabWidth;
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resetColumns();
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}
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}
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void SynDocument::loadFromFile(const QString& filename, const QByteArray& encoding, QByteArray& realEncoding)
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{
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QMutexLocker locker(&mMutex);
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QFile file(filename);
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if (!file.open(QFile::ReadOnly ))
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throw FileError(tr("Can't open file '%1' for read!").arg(file.fileName()));
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beginUpdate();
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internalClear();
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auto action = finally([this]{
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if (mLines.count()>0)
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emit inserted(0,mLines.count());
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endUpdate();
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});
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mIndexOfLongestLine = -1;
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//test for utf8 / utf 8 bom
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if (encoding == ENCODING_AUTO_DETECT) {
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if (file.atEnd()) {
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realEncoding = ENCODING_ASCII;
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return;
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}
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QByteArray line = file.readLine();
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QTextCodec* codec;
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QTextCodec::ConverterState state;
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bool needReread = false;
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bool allAscii = true;
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//test for BOM
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if ((line.length()>=3) && ((unsigned char)line[0]==0xEF) && ((unsigned char)line[1]==0xBB) && ((unsigned char)line[2]==0xBF) ) {
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realEncoding = ENCODING_UTF8_BOM;
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line = line.mid(3);
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codec = QTextCodec::codecForName(ENCODING_UTF8);
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} else {
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realEncoding = ENCODING_UTF8;
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codec = QTextCodec::codecForName(ENCODING_UTF8);
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}
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if (line.endsWith("\r\n")) {
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mFileEndingType = FileEndingType::Windows;
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} else if (line.endsWith("\n")) {
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mFileEndingType = FileEndingType::Linux;
|
|
} else if (line.endsWith("\r")) {
|
|
mFileEndingType = FileEndingType::Mac;
|
|
}
|
|
internalClear();
|
|
while (true) {
|
|
if (line.endsWith("\r\n")) {
|
|
line.remove(line.length()-2,2);
|
|
} else if (line.endsWith("\r")) {
|
|
line.remove(line.length()-1,1);
|
|
} else if (line.endsWith("\n")){
|
|
line.remove(line.length()-1,1);
|
|
}
|
|
if (allAscii) {
|
|
allAscii = isTextAllAscii(line);
|
|
}
|
|
if (allAscii) {
|
|
addItem(QString::fromLatin1(line));
|
|
} else {
|
|
QString newLine = codec->toUnicode(line.constData(),line.length(),&state);
|
|
if (state.invalidChars>0) {
|
|
needReread = true;
|
|
break;
|
|
}
|
|
addItem(newLine);
|
|
}
|
|
if (file.atEnd()){
|
|
break;
|
|
}
|
|
line = file.readLine();
|
|
}
|
|
if (!needReread) {
|
|
if (allAscii)
|
|
realEncoding = ENCODING_ASCII;
|
|
return;
|
|
}
|
|
realEncoding = pCharsetInfoManager->getDefaultSystemEncoding();
|
|
QList<PCharsetInfo> charsets = pCharsetInfoManager->findCharsetByLocale(pCharsetInfoManager->localeName());
|
|
if (!charsets.isEmpty()) {
|
|
if (tryLoadFileByEncoding(realEncoding,file)) {
|
|
return;
|
|
}
|
|
|
|
QSet<QByteArray> encodingSet;
|
|
for (int i=0;i<charsets.size();i++) {
|
|
encodingSet.insert(charsets[i]->name);
|
|
}
|
|
encodingSet.remove(realEncoding);
|
|
foreach (const QByteArray& encodingName,encodingSet) {
|
|
if (encodingName == ENCODING_UTF8)
|
|
continue;
|
|
if (tryLoadFileByEncoding(encodingName,file)) {
|
|
//qDebug()<<encodingName;
|
|
realEncoding = encodingName;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
realEncoding = encoding;
|
|
}
|
|
|
|
if (realEncoding == ENCODING_SYSTEM_DEFAULT) {
|
|
realEncoding = pCharsetInfoManager->getDefaultSystemEncoding();
|
|
}
|
|
file.reset();
|
|
QTextStream textStream(&file);
|
|
if (realEncoding == ENCODING_UTF8_BOM) {
|
|
textStream.setAutoDetectUnicode(true);
|
|
textStream.setCodec(ENCODING_UTF8);
|
|
} else {
|
|
textStream.setAutoDetectUnicode(false);
|
|
textStream.setCodec(realEncoding);
|
|
}
|
|
QString line;
|
|
internalClear();
|
|
while (textStream.readLineInto(&line)) {
|
|
if (line.endsWith("\r\n")) {
|
|
line.remove(line.length()-2,2);
|
|
} else if (line.endsWith("\r")) {
|
|
line.remove(line.length()-1,1);
|
|
} else if (line.endsWith("\n")){
|
|
line.remove(line.length()-1,1);
|
|
}
|
|
addItem(line);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void SynDocument::saveToFile(QFile &file, const QByteArray& encoding,
|
|
const QByteArray& defaultEncoding, QByteArray& realEncoding)
|
|
{
|
|
QMutexLocker locker(&mMutex);
|
|
if (!file.open(QFile::WriteOnly | QFile::Truncate))
|
|
throw FileError(tr("Can't open file '%1' for save!").arg(file.fileName()));
|
|
if (mLines.isEmpty())
|
|
return;
|
|
bool allAscii = true;
|
|
|
|
QTextCodec* codec;
|
|
realEncoding = encoding;
|
|
if (realEncoding == ENCODING_UTF8_BOM) {
|
|
codec = QTextCodec::codecForName(ENCODING_UTF8);
|
|
file.putChar(0xEF);
|
|
file.putChar(0xBB);
|
|
file.putChar(0xBF);
|
|
} else if (realEncoding == ENCODING_SYSTEM_DEFAULT) {
|
|
codec = QTextCodec::codecForLocale();
|
|
} else if (realEncoding == ENCODING_AUTO_DETECT) {
|
|
codec = QTextCodec::codecForName(defaultEncoding);
|
|
if (!codec)
|
|
codec = QTextCodec::codecForLocale();
|
|
} else {
|
|
codec = QTextCodec::codecForName(realEncoding);
|
|
}
|
|
for (PSynDocumentLine& line:mLines) {
|
|
if (allAscii) {
|
|
allAscii = isTextAllAscii(line->fString);
|
|
}
|
|
if (!allAscii) {
|
|
file.write(codec->fromUnicode(line->fString));
|
|
} else {
|
|
file.write(line->fString.toLatin1());
|
|
}
|
|
file.write(lineBreak().toLatin1());
|
|
}
|
|
if (encoding == ENCODING_AUTO_DETECT) {
|
|
if (allAscii)
|
|
realEncoding = ENCODING_ASCII;
|
|
else if (codec->name() == "System") {
|
|
realEncoding = pCharsetInfoManager->getDefaultSystemEncoding();
|
|
} else {
|
|
realEncoding = codec->name();
|
|
}
|
|
}
|
|
}
|
|
|
|
int SynDocument::stringColumns(const QString &line, int colsBefore) const
|
|
{
|
|
int columns = std::max(0,colsBefore);
|
|
int charCols;
|
|
for (int i=0;i<line.length();i++) {
|
|
QChar ch = line[i];
|
|
if (ch == '\t') {
|
|
charCols = mTabWidth - columns % mTabWidth;
|
|
} else {
|
|
charCols = charColumns(ch);
|
|
}
|
|
columns+=charCols;
|
|
}
|
|
return columns-colsBefore;
|
|
}
|
|
|
|
int SynDocument::charColumns(QChar ch) const
|
|
{
|
|
if (ch.unicode()<=32)
|
|
return 1;
|
|
//return std::ceil((int)(fontMetrics().horizontalAdvance(ch) * dpiFactor()) / (double)mCharWidth);
|
|
return std::ceil((int)(fontMetrics().horizontalAdvance(ch)) / (double)mCharWidth);
|
|
}
|
|
|
|
void SynDocument::putTextStr(const QString &text)
|
|
{
|
|
beginUpdate();
|
|
auto action = finally([this]{
|
|
endUpdate();
|
|
});
|
|
internalClear();
|
|
int pos = 0;
|
|
int start;
|
|
while (pos < text.length()) {
|
|
start = pos;
|
|
while (pos<text.length()) {
|
|
if (text[pos] == '\r' || text[pos] == '\n') {
|
|
break;
|
|
}
|
|
pos++;
|
|
}
|
|
add(text.mid(start,pos-start));
|
|
if (pos>=text.length())
|
|
break;
|
|
if (text[pos] == '\r')
|
|
pos++;
|
|
if (text[pos] == '\n')
|
|
pos++;
|
|
}
|
|
}
|
|
|
|
void SynDocument::internalClear()
|
|
{
|
|
if (!mLines.isEmpty()) {
|
|
beginUpdate();
|
|
int oldCount = mLines.count();
|
|
mIndexOfLongestLine = -1;
|
|
mLines.clear();
|
|
emit deleted(0,oldCount);
|
|
endUpdate();
|
|
}
|
|
}
|
|
|
|
FileEndingType SynDocument::getFileEndingType()
|
|
{
|
|
QMutexLocker locker(&mMutex);
|
|
return mFileEndingType;
|
|
}
|
|
|
|
void SynDocument::setFileEndingType(const FileEndingType &fileEndingType)
|
|
{
|
|
QMutexLocker locker(&mMutex);
|
|
mFileEndingType = fileEndingType;
|
|
}
|
|
|
|
bool SynDocument::empty()
|
|
{
|
|
QMutexLocker locker(&mMutex);
|
|
return mLines.count()==0;
|
|
}
|
|
|
|
void SynDocument::resetColumns()
|
|
{
|
|
QMutexLocker locker(&mMutex);
|
|
mIndexOfLongestLine = -1;
|
|
if (mLines.count() > 0 ) {
|
|
for (int i=0;i<mLines.size();i++) {
|
|
mLines[i]->fColumns = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
void SynDocument::invalidAllLineColumns()
|
|
{
|
|
QMutexLocker locker(&mMutex);
|
|
mIndexOfLongestLine = -1;
|
|
for (PSynDocumentLine& line:mLines) {
|
|
line->fColumns = -1;
|
|
}
|
|
}
|
|
|
|
SynDocumentLine::SynDocumentLine():
|
|
fString(),
|
|
fRange(),
|
|
fColumns(-1)
|
|
{
|
|
}
|
|
|
|
|
|
SynEditUndoList::SynEditUndoList():QObject()
|
|
{
|
|
mMaxUndoActions = 1024;
|
|
mNextChangeNumber = 1;
|
|
mInsideRedo = false;
|
|
|
|
mBlockChangeNumber=0;
|
|
mBlockLock=0;
|
|
mFullUndoImposible=false;
|
|
mBlockCount=0;
|
|
mLastPoppedItemChangeNumber=0;
|
|
mInitialChangeNumber = 0;
|
|
mLastRestoredItemChangeNumber=0;
|
|
}
|
|
|
|
void SynEditUndoList::addChange(SynChangeReason reason, const BufferCoord &startPos,
|
|
const BufferCoord &endPos, const QStringList& changeText,
|
|
SynSelectionMode selMode)
|
|
{
|
|
int changeNumber;
|
|
if (inBlock()) {
|
|
changeNumber = mBlockChangeNumber;
|
|
} else {
|
|
changeNumber = getNextChangeNumber();
|
|
}
|
|
PSynEditUndoItem newItem = std::make_shared<SynEditUndoItem>(
|
|
reason,
|
|
selMode,startPos,endPos,changeText,
|
|
changeNumber);
|
|
// qDebug()<<"add change"<<changeNumber<<(int)reason;
|
|
mItems.append(newItem);
|
|
ensureMaxEntries();
|
|
if (reason!=SynChangeReason::GroupBreak && !inBlock()) {
|
|
mBlockCount++;
|
|
// qDebug()<<"add"<<mBlockCount;
|
|
emit addedUndo();
|
|
}
|
|
}
|
|
|
|
void SynEditUndoList::restoreChange(SynChangeReason AReason, const BufferCoord &AStart, const BufferCoord &AEnd, const QStringList &ChangeText, SynSelectionMode SelMode, size_t changeNumber)
|
|
{
|
|
PSynEditUndoItem newItem = std::make_shared<SynEditUndoItem>(AReason,
|
|
SelMode,AStart,AEnd,ChangeText,
|
|
changeNumber);
|
|
restoreChange(newItem);
|
|
}
|
|
|
|
void SynEditUndoList::restoreChange(PSynEditUndoItem item)
|
|
{
|
|
size_t changeNumber = item->changeNumber();
|
|
mItems.append(item);
|
|
ensureMaxEntries();
|
|
if (changeNumber>mNextChangeNumber)
|
|
mNextChangeNumber=changeNumber;
|
|
if (changeNumber!=mLastRestoredItemChangeNumber) {
|
|
// qDebug()<<"restore"<<mBlockCount;
|
|
mBlockCount++;
|
|
emit addedUndo();
|
|
}
|
|
mLastRestoredItemChangeNumber=changeNumber;
|
|
}
|
|
|
|
void SynEditUndoList::addGroupBreak()
|
|
{
|
|
if (!canUndo())
|
|
return;
|
|
|
|
if (lastChangeReason() != SynChangeReason::GroupBreak) {
|
|
addChange(SynChangeReason::GroupBreak, {0,0}, {0,0}, QStringList(), SynSelectionMode::Normal);
|
|
}
|
|
}
|
|
|
|
void SynEditUndoList::beginBlock()
|
|
{
|
|
// qDebug()<<"begin block";
|
|
if (mBlockLock==0)
|
|
mBlockChangeNumber = getNextChangeNumber();
|
|
mBlockLock++;
|
|
|
|
}
|
|
|
|
void SynEditUndoList::clear()
|
|
{
|
|
mItems.clear();
|
|
mFullUndoImposible = false;
|
|
mInitialChangeNumber=0;
|
|
mLastPoppedItemChangeNumber=0;
|
|
mLastRestoredItemChangeNumber=0;
|
|
mBlockCount=0;
|
|
mBlockLock=0;
|
|
}
|
|
|
|
void SynEditUndoList::endBlock()
|
|
{
|
|
// qDebug()<<"end block";
|
|
if (mBlockLock > 0) {
|
|
mBlockLock--;
|
|
if (mBlockLock == 0) {
|
|
size_t iBlockID = mBlockChangeNumber;
|
|
mBlockChangeNumber = 0;
|
|
if (mItems.count() > 0 && peekItem()->changeNumber() == iBlockID) {
|
|
mBlockCount++;
|
|
// qDebug()<<"end block"<<mBlockCount;
|
|
emit addedUndo();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool SynEditUndoList::inBlock()
|
|
{
|
|
return mBlockLock>0;
|
|
}
|
|
|
|
unsigned int SynEditUndoList::getNextChangeNumber()
|
|
{
|
|
return mNextChangeNumber++;
|
|
}
|
|
|
|
SynChangeReason SynEditUndoList::lastChangeReason()
|
|
{
|
|
if (mItems.count() == 0)
|
|
return SynChangeReason::Nothing;
|
|
else
|
|
return mItems.last()->changeReason();
|
|
}
|
|
|
|
bool SynEditUndoList::isEmpty()
|
|
{
|
|
return mItems.count()==0;
|
|
}
|
|
|
|
PSynEditUndoItem SynEditUndoList::peekItem()
|
|
{
|
|
if (mItems.count() == 0)
|
|
return PSynEditUndoItem();
|
|
else
|
|
return mItems.last();
|
|
}
|
|
|
|
PSynEditUndoItem SynEditUndoList::popItem()
|
|
{
|
|
if (mItems.count() == 0)
|
|
return PSynEditUndoItem();
|
|
else {
|
|
PSynEditUndoItem item = mItems.last();
|
|
// qDebug()<<"popped"<<item->changeNumber()<<item->changeText()<<(int)item->changeReason()<<mLastPoppedItemChangeNumber;
|
|
if (mLastPoppedItemChangeNumber!=item->changeNumber() && item->changeReason()!=SynChangeReason::GroupBreak) {
|
|
mBlockCount--;
|
|
// qDebug()<<"pop"<<mBlockCount;
|
|
if (mBlockCount<0) {
|
|
qDebug()<<"block count calculation error";
|
|
mBlockCount=0;
|
|
}
|
|
}
|
|
mLastPoppedItemChangeNumber = item->changeNumber();
|
|
mItems.removeLast();
|
|
return item;
|
|
}
|
|
}
|
|
|
|
bool SynEditUndoList::canUndo()
|
|
{
|
|
return mItems.count()>0;
|
|
}
|
|
|
|
int SynEditUndoList::itemCount()
|
|
{
|
|
return mItems.count();
|
|
}
|
|
|
|
int SynEditUndoList::maxUndoActions() const
|
|
{
|
|
return mMaxUndoActions;
|
|
}
|
|
|
|
void SynEditUndoList::setMaxUndoActions(int maxUndoActions)
|
|
{
|
|
if (maxUndoActions!=mMaxUndoActions) {
|
|
mMaxUndoActions = maxUndoActions;
|
|
ensureMaxEntries();
|
|
}
|
|
}
|
|
|
|
bool SynEditUndoList::initialState()
|
|
{
|
|
if (itemCount() == 0) {
|
|
return mInitialChangeNumber==0;
|
|
} else {
|
|
return peekItem()->changeNumber() == mInitialChangeNumber;
|
|
}
|
|
}
|
|
|
|
void SynEditUndoList::setInitialState()
|
|
{
|
|
if (itemCount() == 0)
|
|
mInitialChangeNumber = 0;
|
|
else
|
|
mInitialChangeNumber = peekItem()->changeNumber();
|
|
}
|
|
|
|
bool SynEditUndoList::insideRedo() const
|
|
{
|
|
return mInsideRedo;
|
|
}
|
|
|
|
void SynEditUndoList::setInsideRedo(bool insideRedo)
|
|
{
|
|
mInsideRedo = insideRedo;
|
|
}
|
|
|
|
bool SynEditUndoList::fullUndoImposible() const
|
|
{
|
|
return mFullUndoImposible;
|
|
}
|
|
|
|
void SynEditUndoList::ensureMaxEntries()
|
|
{
|
|
if (mMaxUndoActions>0 && mBlockCount > mMaxUndoActions){
|
|
mFullUndoImposible = true;
|
|
while (mBlockCount > mMaxUndoActions && !mItems.isEmpty()) {
|
|
//remove all undo item in block
|
|
PSynEditUndoItem item = mItems.front();
|
|
size_t changeNumber = item->changeNumber();
|
|
while (mItems.count()>0 && mItems.front()->changeNumber() == changeNumber)
|
|
mItems.removeFirst();
|
|
if (item->changeReason()!=SynChangeReason::GroupBreak)
|
|
mBlockCount--;
|
|
}
|
|
}
|
|
}
|
|
|
|
SynSelectionMode SynEditUndoItem::changeSelMode() const
|
|
{
|
|
return mChangeSelMode;
|
|
}
|
|
|
|
BufferCoord SynEditUndoItem::changeStartPos() const
|
|
{
|
|
return mChangeStartPos;
|
|
}
|
|
|
|
BufferCoord SynEditUndoItem::changeEndPos() const
|
|
{
|
|
return mChangeEndPos;
|
|
}
|
|
|
|
QStringList SynEditUndoItem::changeText() const
|
|
{
|
|
return mChangeText;
|
|
}
|
|
|
|
size_t SynEditUndoItem::changeNumber() const
|
|
{
|
|
return mChangeNumber;
|
|
}
|
|
|
|
SynEditUndoItem::SynEditUndoItem(SynChangeReason reason, SynSelectionMode selMode,
|
|
BufferCoord startPos, BufferCoord endPos,
|
|
const QStringList& text, int number)
|
|
{
|
|
mChangeReason = reason;
|
|
mChangeSelMode = selMode;
|
|
mChangeStartPos = startPos;
|
|
mChangeEndPos = endPos;
|
|
mChangeText = text;
|
|
mChangeNumber = number;
|
|
}
|
|
|
|
SynChangeReason SynEditUndoItem::changeReason() const
|
|
{
|
|
return mChangeReason;
|
|
}
|
|
|
|
SynEditRedoList::SynEditRedoList()
|
|
{
|
|
|
|
}
|
|
|
|
void SynEditRedoList::addRedo(SynChangeReason AReason, const BufferCoord &AStart, const BufferCoord &AEnd, const QStringList &ChangeText, SynSelectionMode SelMode, size_t changeNumber)
|
|
{
|
|
PSynEditUndoItem newItem = std::make_shared<SynEditUndoItem>(
|
|
AReason,
|
|
SelMode,AStart,AEnd,ChangeText,
|
|
changeNumber);
|
|
mItems.append(newItem);
|
|
}
|
|
|
|
void SynEditRedoList::addRedo(PSynEditUndoItem item)
|
|
{
|
|
mItems.append(item);
|
|
}
|
|
|
|
void SynEditRedoList::clear()
|
|
{
|
|
mItems.clear();
|
|
}
|
|
|
|
SynChangeReason SynEditRedoList::lastChangeReason()
|
|
{
|
|
if (mItems.count() == 0)
|
|
return SynChangeReason::Nothing;
|
|
else
|
|
return mItems.last()->changeReason();
|
|
}
|
|
|
|
bool SynEditRedoList::isEmpty()
|
|
{
|
|
return mItems.isEmpty();
|
|
}
|
|
|
|
PSynEditUndoItem SynEditRedoList::peekItem()
|
|
{
|
|
if (mItems.count() == 0)
|
|
return PSynEditUndoItem();
|
|
else
|
|
return mItems.last();
|
|
}
|
|
|
|
PSynEditUndoItem SynEditRedoList::popItem()
|
|
{
|
|
if (mItems.count() == 0)
|
|
return PSynEditUndoItem();
|
|
else {
|
|
PSynEditUndoItem item = mItems.last();
|
|
mItems.removeLast();
|
|
return item;
|
|
}
|
|
}
|
|
|
|
bool SynEditRedoList::canRedo()
|
|
{
|
|
return mItems.count()>0;
|
|
}
|
|
|
|
int SynEditRedoList::itemCount()
|
|
{
|
|
return mItems.count();
|
|
}
|