Basic integration of diff editor inside git plugin

Change-Id: I7675fc1d994020f94f42f6bd7b4f75aa29e6edf6
Reviewed-by: David Schulz <david.schulz@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/diffeditor/diffeditorfile.cpp

@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 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 "diffeditorfile.h"
+
+namespace DiffEditor {
+namespace Internal {
+
+///////////////////////////////// DiffFile //////////////////////////////////
+
+DiffEditorFile::DiffEditorFile(const QString &mimeType, QObject *parent) :
+    Core::IDocument(parent),
+    m_mimeType(mimeType),
+    m_modified(false)
+{
+}
+
+void DiffEditorFile::rename(const QString &newName)
+{
+    Q_UNUSED(newName);
+    return;
+}
+
+void DiffEditorFile::setFileName(const QString &name)
+{
+    if (m_fileName == name)
+        return;
+    m_fileName = name;
+    emit changed();
+}
+
+void DiffEditorFile::setModified(bool modified)
+{
+    if (m_modified == modified)
+        return;
+    m_modified = modified;
+    emit changed();
+}
+
+bool DiffEditorFile::save(QString *errorString, const QString &fileName, bool autoSave)
+{
+    emit saveMe(errorString, fileName, autoSave);
+    if (!errorString->isEmpty())
+        return false;
+    emit changed();
+    return true;
+}
+
+QString DiffEditorFile::mimeType() const
+{
+    return m_mimeType;
+}
+
+Core::IDocument::ReloadBehavior DiffEditorFile::reloadBehavior(ChangeTrigger state, ChangeType type) const
+{
+    Q_UNUSED(state)
+    Q_UNUSED(type)
+    return BehaviorSilent;
+}
+
+bool DiffEditorFile::reload(QString *errorString, ReloadFlag flag, ChangeType type)
+{
+    Q_UNUSED(errorString)
+    Q_UNUSED(flag)
+    Q_UNUSED(type)
+    return true;
+}
+
+} // namespace Internal
+} // namespace DiffEditor