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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "plaintexteditmodifier.h"
#include <utils/changeset.h>
#include <qmljs/qmljsmodelmanagerinterface.h>
#include <QPlainTextEdit>
#include <QDebug>
using namespace Utils;
using namespace QmlDesigner;
PlainTextEditModifier::PlainTextEditModifier(QPlainTextEdit *textEdit)
: PlainTextEditModifier(textEdit->document(), textEdit->textCursor())
{
connect(textEdit, &QPlainTextEdit::textChanged, this, &PlainTextEditModifier::textEditChanged);
}
PlainTextEditModifier::PlainTextEditModifier(QTextDocument *document, const QTextCursor &textCursor)
: m_textDocument{document}
, m_textCursor{textCursor}
{}
PlainTextEditModifier::~PlainTextEditModifier() = default;
void PlainTextEditModifier::replace(int offset, int length, const QString &replacement)
{
#if 0
qDebug() << "Original:" << m_textEdit->toPlainText();
qDebug() << "Replacement:" << replacement;
qDebug() << " offset:" << offset;
qDebug() << " length:" << length;
#endif
Q_ASSERT(offset >= 0);
Q_ASSERT(length >= 0);
const int replacementLength = replacement.length();
if (m_changeSet) {
m_changeSet->replace(offset, offset + length, replacement);
emit replaced(offset, length, replacementLength);
} else {
ChangeSet changeSet;
changeSet.replace(offset, offset + length, replacement);
emit replaced(offset, length, replacementLength);
runRewriting(&changeSet);
}
}
void PlainTextEditModifier::move(const MoveInfo &moveInfo)
{
#if 0
qDebug() << "Original:" << m_textEdit->toPlainText();
qDebug() << "Move:" << m_textEdit->toPlainText().mid(moveInfo.objectStart, moveInfo.objectEnd - moveInfo.objectStart);
qDebug() << " prefix:" << moveInfo.prefixToInsert;
qDebug() << " suffix:" << moveInfo.suffixToInsert;
qDebug() << " leadingCharsToRemove:" << moveInfo.leadingCharsToRemove;
qDebug() << " " << m_textEdit->toPlainText().mid(moveInfo.objectStart - moveInfo.leadingCharsToRemove, moveInfo.leadingCharsToRemove);
qDebug() << " trailingCharsToRemove:" << moveInfo.trailingCharsToRemove;
qDebug() << " " << m_textEdit->toPlainText().mid(moveInfo.objectEnd, moveInfo.trailingCharsToRemove);
#endif
Q_ASSERT(moveInfo.objectStart >= 0);
Q_ASSERT(moveInfo.objectEnd > moveInfo.objectStart);
Q_ASSERT(moveInfo.destination >= 0);
Q_ASSERT(moveInfo.leadingCharsToRemove >= 0);
Q_ASSERT(moveInfo.trailingCharsToRemove >= 0);
Q_ASSERT(moveInfo.objectStart - moveInfo.leadingCharsToRemove >= 0);
if (m_changeSet) {
m_changeSet->insert(moveInfo.destination, moveInfo.prefixToInsert);
m_changeSet->move(moveInfo.objectStart, moveInfo.objectEnd, moveInfo.destination);
m_changeSet->insert(moveInfo.destination, moveInfo.suffixToInsert);
m_changeSet->remove(moveInfo.objectStart - moveInfo.leadingCharsToRemove, moveInfo.objectStart);
m_changeSet->remove(moveInfo.objectEnd, moveInfo.objectEnd + moveInfo.trailingCharsToRemove);
emit moved(moveInfo);
} else {
ChangeSet changeSet;
changeSet.insert(moveInfo.destination, moveInfo.prefixToInsert);
changeSet.move(moveInfo.objectStart, moveInfo.objectEnd, moveInfo.destination);
changeSet.insert(moveInfo.destination, moveInfo.suffixToInsert);
changeSet.remove(moveInfo.objectStart - moveInfo.leadingCharsToRemove, moveInfo.objectStart);
changeSet.remove(moveInfo.objectEnd, moveInfo.objectEnd + moveInfo.trailingCharsToRemove);
emit moved(moveInfo);
runRewriting(&changeSet);
}
}
void PlainTextEditModifier::startGroup()
{
if (!m_changeSet)
m_changeSet = new ChangeSet;
textCursor().beginEditBlock();
}
void PlainTextEditModifier::flushGroup()
{
if (m_changeSet)
runRewriting(m_changeSet);
}
void PlainTextEditModifier::commitGroup()
{
if (m_changeSet) {
runRewriting(m_changeSet);
delete m_changeSet;
m_changeSet = nullptr;
}
textCursor().endEditBlock();
}
void PlainTextEditModifier::textEditChanged()
{
if (!m_ongoingTextChange && m_changeSignalsEnabled)
emit textChanged();
else
m_pendingChangeSignal = true;
}
void PlainTextEditModifier::runRewriting(ChangeSet *changeSet)
{
m_ongoingTextChange = true;
QTextCursor cursor = textCursor();
changeSet->apply(&cursor);
m_ongoingTextChange = false;
textEditChanged();
}
QTextDocument *PlainTextEditModifier::textDocument() const
{
return m_textDocument;
}
QString PlainTextEditModifier::text() const
{
return m_textDocument->toPlainText();
}
QTextCursor PlainTextEditModifier::textCursor() const
{
return m_textCursor;
}
void PlainTextEditModifier::deactivateChangeSignals()
{
m_changeSignalsEnabled = false;
}
void PlainTextEditModifier::reactivateChangeSignals()
{
m_changeSignalsEnabled = true;
if (m_pendingChangeSignal) {
m_pendingChangeSignal = false;
emit textChanged();
}
}
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