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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "cppqtstyleindenter.h"
#include <cpptools/cppcodeformatter.h>
#include <texteditor/basetexteditor.h>
#include <texteditor/tabsettings.h>
#include <QtCore/QChar>
#include <QtGui/QTextDocument>
#include <QtGui/QTextBlock>
#include <QtGui/QTextCursor>
using namespace CppEditor;
using namespace Internal;
CppQtStyleIndenter::CppQtStyleIndenter()
{}
CppQtStyleIndenter::~CppQtStyleIndenter()
{}
bool CppQtStyleIndenter::isElectricCharacter(const QChar &ch) const
{
if (ch == QLatin1Char('{') ||
ch == QLatin1Char('}') ||
ch == QLatin1Char(':') ||
ch == QLatin1Char('#')) {
return true;
}
return false;
}
static bool colonIsElectric(const QString &text)
{
// switch cases and access declarations should be reindented
if (text.contains(QLatin1String("case"))
|| text.contains(QLatin1String("default"))
|| text.contains(QLatin1String("public"))
|| text.contains(QLatin1String("private"))
|| text.contains(QLatin1String("protected"))
|| text.contains(QLatin1String("signals"))) {
return true;
}
// lines that start with : might have a constructor initializer list
const QString trimmedtext = text.trimmed();
if (!trimmedtext.isEmpty() && trimmedtext.at(0) == QLatin1Char(':'))
return true;
return false;
}
void CppQtStyleIndenter::indentBlock(QTextDocument *doc,
const QTextBlock &block,
const QChar &typedChar,
TextEditor::BaseTextEditorWidget *editor)
{
Q_UNUSED(doc)
const TextEditor::TabSettings &ts = editor->tabSettings();
CppTools::QtStyleCodeFormatter codeFormatter(ts);
codeFormatter.updateStateUntil(block);
int indent;
int padding;
codeFormatter.indentFor(block, &indent, &padding);
if (isElectricCharacter(typedChar)) {
// : should not be electric for labels
if (typedChar == QLatin1Char(':') && !colonIsElectric(block.text()))
return;
// only reindent the current line when typing electric characters if the
// indent is the same it would be if the line were empty
int newlineIndent;
int newlinePadding;
codeFormatter.indentForNewLineAfter(block.previous(), &newlineIndent, &newlinePadding);
if (ts.indentationColumn(block.text()) != newlineIndent + newlinePadding)
return;
}
ts.indentLine(block, indent + padding, padding);
}
void CppQtStyleIndenter::indent(QTextDocument *doc,
const QTextCursor &cursor,
const QChar &typedChar,
TextEditor::BaseTextEditorWidget *editor)
{
if (cursor.hasSelection()) {
QTextBlock block = doc->findBlock(cursor.selectionStart());
const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
const TextEditor::TabSettings &ts = editor->tabSettings();
CppTools::QtStyleCodeFormatter codeFormatter(ts);
codeFormatter.updateStateUntil(block);
QTextCursor tc = editor->textCursor();
tc.beginEditBlock();
do {
int indent;
int padding;
codeFormatter.indentFor(block, &indent, &padding);
ts.indentLine(block, indent + padding, padding);
codeFormatter.updateLineStateChange(block);
block = block.next();
} while (block.isValid() && block != end);
tc.endEditBlock();
} else {
indentBlock(doc, cursor.block(), typedChar, editor);
}
}
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