Implement Code Style schemes

Task-number: QTCREATORBUG-5092

Change-Id: I218cef02f7c242e4dfae59b1b8021ea618e60d07
Reviewed-on: http://codereview.qt-project.org/5160
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/src/plugins/texteditor/typingsettings.cpp b/src/plugins/texteditor/typingsettings.cpp
new file mode 100644
index 0000000000..7cca2ee213
--- /dev/null
+++ b/src/plugins/texteditor/typingsettings.cpp
@@ -0,0 +1,113 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at info@qt.nokia.com.
+**
+**************************************************************************/
+
+#include "typingsettings.h"
+
+#include <utils/settingsutils.h>
+#include <QtGui/QTextCursor>
+#include <QtGui/QTextDocument>
+
+static const char autoIndentKey[] = "AutoIndent";
+static const char tabKeyBehaviorKey[] = "TabKeyBehavior";
+static const char smartBackspaceBehaviorKey[] = "SmartBackspaceBehavior";
+static const char groupPostfix[] = "TypingSettings";
+
+
+namespace TextEditor {
+
+TypingSettings::TypingSettings():
+    m_autoIndent(true),
+    m_tabKeyBehavior(TabNeverIndents),
+    m_smartBackspaceBehavior(BackspaceNeverIndents)
+{
+}
+
+void TypingSettings::toSettings(const QString &category, QSettings *s) const
+{
+    Utils::toSettings(QLatin1String(groupPostfix), category, s, this);
+}
+
+void TypingSettings::fromSettings(const QString &category, const QSettings *s)
+{
+    *this = TypingSettings(); // Assign defaults
+    Utils::fromSettings(QLatin1String(groupPostfix), category, s, this);
+}
+
+void TypingSettings::toMap(const QString &prefix, QVariantMap *map) const
+{
+    map->insert(prefix + QLatin1String(autoIndentKey), m_autoIndent);
+    map->insert(prefix + QLatin1String(tabKeyBehaviorKey), m_tabKeyBehavior);
+    map->insert(prefix + QLatin1String(smartBackspaceBehaviorKey), m_smartBackspaceBehavior);
+}
+
+void TypingSettings::fromMap(const QString &prefix, const QVariantMap &map)
+{
+    m_autoIndent = map.value(prefix + QLatin1String(autoIndentKey), m_autoIndent).toBool();
+    m_tabKeyBehavior = (TabKeyBehavior)
+        map.value(prefix + QLatin1String(tabKeyBehaviorKey), m_tabKeyBehavior).toInt();
+    m_smartBackspaceBehavior = (SmartBackspaceBehavior)
+        map.value(prefix + QLatin1String(smartBackspaceBehaviorKey),
+                  m_smartBackspaceBehavior).toInt();
+
+}
+
+bool TypingSettings::equals(const TypingSettings &ts) const
+{
+    return m_autoIndent == ts.m_autoIndent
+        && m_tabKeyBehavior == ts.m_tabKeyBehavior
+        && m_smartBackspaceBehavior == ts.m_smartBackspaceBehavior;
+}
+
+bool TypingSettings::tabShouldIndent(const QTextDocument *document, QTextCursor cursor, int *suggestedPosition) const
+{
+    if (m_tabKeyBehavior == TabNeverIndents)
+        return false;
+    QTextCursor tc = cursor;
+    if (suggestedPosition)
+        *suggestedPosition = tc.position(); // At least suggest original position
+    tc.movePosition(QTextCursor::StartOfLine);
+    if (tc.atBlockEnd()) // cursor was on a blank line
+        return true;
+    if (document->characterAt(tc.position()).isSpace()) {
+        tc.movePosition(QTextCursor::WordRight);
+        if (tc.positionInBlock() >= cursor.positionInBlock()) {
+            if (suggestedPosition)
+                *suggestedPosition = tc.position(); // Suggest position after whitespace
+            if (m_tabKeyBehavior == TabLeadingWhitespaceIndents)
+                return true;
+        }
+    }
+    return (m_tabKeyBehavior == TabAlwaysIndents);
+}
+
+
+} // namespace TextEditor