Add DiffEditorController

Change-Id: Ic2f4a38d2ed08426ca7e5229d959b10fa545c129
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/diffeditor/diffeditorcontroller.cpp

@@ -0,0 +1,160 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "diffeditorcontroller.h"
+
+namespace DiffEditor {
+
+DiffEditorController::DiffEditorController(QObject *parent)
+    : QObject(parent),
+      m_contextLinesNumber(3),
+      m_ignoreWhitespaces(true),
+      m_syncScrollBars(true)
+{
+    clear();
+}
+
+DiffEditorController::~DiffEditorController()
+{
+
+}
+
+QString DiffEditorController::clearMessage() const
+{
+    return m_clearMessage;
+}
+
+QList<DiffEditorController::DiffFilesContents> DiffEditorController::diffContents() const
+{
+    return m_diffFileList;
+}
+
+QString DiffEditorController::workingDirectory() const
+{
+    return m_workingDirectory;
+}
+
+int DiffEditorController::contextLinesNumber() const
+{
+    return m_contextLinesNumber;
+}
+
+bool DiffEditorController::isIgnoreWhitespaces() const
+{
+    return m_ignoreWhitespaces;
+}
+
+bool DiffEditorController::horizontalScrollBarSynchronization() const
+{
+    return m_syncScrollBars;
+}
+
+int DiffEditorController::currentDiffFileIndex() const
+{
+    return m_currentDiffFileIndex;
+}
+
+void DiffEditorController::clear()
+{
+    clear(tr("No difference"));
+}
+
+void DiffEditorController::clear(const QString &message)
+{
+    m_clearMessage = message;
+    m_currentDiffFileIndex = -1;
+    emit cleared(message);
+}
+
+void DiffEditorController::setDiffContents(const QList<DiffFilesContents> &diffFileList, const QString &workingDirectory)
+{
+    m_diffFileList = diffFileList;
+    m_workingDirectory = workingDirectory;
+    m_currentDiffFileIndex = (diffFileList.isEmpty() ? -1 : 0);
+    emit diffContentsChanged(diffFileList, workingDirectory);
+}
+
+void DiffEditorController::setContextLinesNumber(int lines)
+{
+    const int l = qMax(lines, -1);
+    if (m_contextLinesNumber == l)
+        return;
+
+    m_contextLinesNumber = l;
+    emit contextLinesNumberChanged(l);
+}
+
+void DiffEditorController::setIgnoreWhitespaces(bool ignore)
+{
+    if (m_ignoreWhitespaces == ignore)
+        return;
+
+    m_ignoreWhitespaces = ignore;
+    emit ignoreWhitespacesChanged(ignore);
+}
+
+void DiffEditorController::setHorizontalScrollBarSynchronization(bool on)
+{
+    if (m_syncScrollBars == on)
+        return;
+
+    m_syncScrollBars = on;
+    emit horizontalScrollBarSynchronizationChanged(on);
+}
+
+void DiffEditorController::setCurrentDiffFileIndex(int diffFileIndex)
+{
+    if (!m_diffFileList.count())
+        return; // -1 is the only valid value in this case
+
+    const int newIndex = qBound(0, diffFileIndex, m_diffFileList.count() - 1);
+
+    if (m_currentDiffFileIndex == newIndex)
+        return;
+
+    m_currentDiffFileIndex = newIndex;
+    emit currentDiffFileIndexChanged(newIndex);
+}
+
+} // namespace DiffEditor
+
+//QTextCodec *DiffEditorWidget::codec() const
+//{
+//}
+
+//QString DiffEditorWidget::source() const
+//{
+//    return m_source;
+//}
+
+//void DiffEditorWidget::setSource(const QString &source)
+//{
+//    m_source = source;
+//}
+