1 files changed, 186 insertions, 0 deletions
diff --git a/src/plugins/qmldesigner/core/model/plaintexteditmodifier.cpp b/src/plugins/qmldesigner/core/model/plaintexteditmodifier.cpp
new file mode 100644
index 0000000000..d6ff674cdd
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+++ b/src/plugins/qmldesigner/core/model/plaintexteditmodifier.cpp
@@ -0,0 +1,186 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** GNU Lesser General Public License Usage
+**
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include <QtCore/QDebug>
+
+#include <QtGui/QPlainTextEdit>
+#include <QtGui/QUndoStack>
+
+#include <filemanager/changeset.h>
+
+#include "plaintexteditmodifier.h"
+
+using namespace Utils;
+using namespace QmlDesigner;
+
+PlainTextEditModifier::PlainTextEditModifier(QPlainTextEdit *textEdit):
+        m_changeSet(0),
+        m_textEdit(textEdit),
+        m_changeSignalsEnabled(true),
+        m_pendingChangeSignal(false),
+        m_ongoingTextChange(false)
+{
+    connect(m_textEdit, SIGNAL(textChanged()),
+            this, SLOT(textEditChanged()));
+}
+
+PlainTextEditModifier::~PlainTextEditModifier()
+{
+}
+
+void PlainTextEditModifier::save(QIODevice *device)
+{
+    device->write(m_textEdit->toPlainText().toLatin1());
+}
+
+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, length, replacement);
+        emit replaced(offset, length, replacementLength);
+    } else {
+        ChangeSet changeSet;
+        changeSet.replace(offset, length, replacement);
+        emit replaced(offset, length, replacementLength);
+        runRewriting(&changeSet);
+    }
+}
+
+void PlainTextEditModifier::move(const MoveInfo &moveInfo)
+{
+    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.objectStart, moveInfo.destination);
+        m_changeSet->insert(moveInfo.destination, moveInfo.suffixToInsert);
+        m_changeSet->remove(moveInfo.objectStart - moveInfo.leadingCharsToRemove, moveInfo.leadingCharsToRemove);
+        m_changeSet->remove(moveInfo.objectEnd, moveInfo.trailingCharsToRemove);
+        emit moved(moveInfo);
+    } else {
+        ChangeSet changeSet;
+        changeSet.insert(moveInfo.destination, moveInfo.prefixToInsert);
+        changeSet.move(moveInfo.objectStart, moveInfo.objectEnd - moveInfo.objectStart, moveInfo.destination);
+        changeSet.insert(moveInfo.destination, moveInfo.suffixToInsert);
+        changeSet.remove(moveInfo.objectStart - moveInfo.leadingCharsToRemove, moveInfo.leadingCharsToRemove);
+        changeSet.remove(moveInfo.objectEnd, moveInfo.trailingCharsToRemove);
+        emit moved(moveInfo);
+        runRewriting(&changeSet);
+    }
+}
+
+void PlainTextEditModifier::startGroup()
+{
+    if (!m_changeSet)
+        m_changeSet = new ChangeSet;
+
+    m_textEdit->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 = 0;
+    }
+
+    m_textEdit->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 = m_textEdit->textCursor();
+    changeSet->apply(&cursor);
+    m_ongoingTextChange = false;
+    textEditChanged();
+}
+
+QTextDocument *PlainTextEditModifier::textDocument() const
+{
+    return m_textEdit->document();
+}
+
+QString PlainTextEditModifier::text() const
+{
+    return m_textEdit->toPlainText();
+}
+
+QTextCursor PlainTextEditModifier::textCursor() const
+{
+    return m_textEdit->textCursor();
+}
+
+void PlainTextEditModifier::deactivateChangeSignals()
+{
+    m_changeSignalsEnabled = false;
+}
+
+void PlainTextEditModifier::reactivateChangeSignals()
+{
+    m_changeSignalsEnabled = true;
+
+    if (m_pendingChangeSignal) {
+        m_pendingChangeSignal = false;
+        emit textChanged();
+    }
+}