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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: http://www.qt-project.org/
**
**
** 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.
**
**
**************************************************************************/
#include "cppqtstyleindenter.h"
#include "cppcodeformatter.h"
#include "cpptoolssettings.h"
#include "cppcodestylepreferences.h"
#include "cpptoolsconstants.h"
#include <texteditor/tabsettings.h>
#include <texteditor/texteditorsettings.h>
#include <QChar>
#include <QTextDocument>
#include <QTextBlock>
#include <QTextCursor>
using namespace CppTools;
CppQtStyleIndenter::CppQtStyleIndenter()
: m_cppCodeStylePreferences(0)
{
// Just for safety. setCodeStylePreferences should be called when the editor the
// indenter belongs to gets initialized.
m_cppCodeStylePreferences = CppToolsSettings::instance()->cppCodeStyle();
}
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"))
|| text.contains(QLatin1String("Q_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,
const TextEditor::TabSettings &tabSettings)
{
Q_UNUSED(doc)
CppTools::QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
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 (tabSettings.indentationColumn(block.text()) != newlineIndent + newlinePadding)
return;
}
tabSettings.indentLine(block, indent + padding, padding);
}
void CppQtStyleIndenter::indent(QTextDocument *doc,
const QTextCursor &cursor,
const QChar &typedChar,
const TextEditor::TabSettings &tabSettings)
{
if (cursor.hasSelection()) {
QTextBlock block = doc->findBlock(cursor.selectionStart());
const QTextBlock end = doc->findBlock(cursor.selectionEnd()).next();
CppTools::QtStyleCodeFormatter codeFormatter(tabSettings, codeStyleSettings());
codeFormatter.updateStateUntil(block);
QTextCursor tc = cursor;
tc.beginEditBlock();
do {
int indent;
int padding;
codeFormatter.indentFor(block, &indent, &padding);
tabSettings.indentLine(block, indent + padding, padding);
codeFormatter.updateLineStateChange(block);
block = block.next();
} while (block.isValid() && block != end);
tc.endEditBlock();
} else {
indentBlock(doc, cursor.block(), typedChar, tabSettings);
}
}
void CppQtStyleIndenter::setCodeStylePreferences(TextEditor::ICodeStylePreferences *preferences)
{
CppTools::CppCodeStylePreferences *cppCodeStylePreferences
= qobject_cast<CppTools::CppCodeStylePreferences *>(preferences);
if (cppCodeStylePreferences)
m_cppCodeStylePreferences = cppCodeStylePreferences;
}
void CppQtStyleIndenter::invalidateCache(QTextDocument *doc)
{
CppTools::QtStyleCodeFormatter formatter;
formatter.invalidateCache(doc);
}
CppCodeStyleSettings CppQtStyleIndenter::codeStyleSettings() const
{
if (m_cppCodeStylePreferences)
return m_cppCodeStylePreferences->currentCodeStyleSettings();
return CppCodeStyleSettings();
}
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