/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** contained in the Technology Preview License Agreement accompanying
** this package.
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** GNU Lesser General Public License Usage
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** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
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#include "qmljsindenter.h"

#include <qmljstools/qmljsqtstylecodeformatter.h>
#include <texteditor/basetexteditor.h>
#include <texteditor/tabsettings.h>

#include <QtCore/QChar>
#include <QtGui/QTextDocument>
#include <QtGui/QTextBlock>
#include <QtGui/QTextCursor>

using namespace QmlJSEditor;
using namespace Internal;

Indenter::Indenter()
{}

Indenter::~Indenter()
{}

bool Indenter::isElectricCharacter(const QChar &ch) const
{
    if (ch == QLatin1Char('{')
            || ch == QLatin1Char('}')
            || ch == QLatin1Char(']')
            || ch == QLatin1Char(':'))
        return true;
    return false;
}

void Indenter::indentBlock(QTextDocument *doc,
                           const QTextBlock &block,
                           const QChar &typedChar,
                           TextEditor::BaseTextEditorWidget *editor)
{
    Q_UNUSED(doc)
    Q_UNUSED(editor)

    const TextEditor::TabSettings &ts = editor->tabSettings();
    QmlJSTools::QtStyleCodeFormatter codeFormatter(ts);

    codeFormatter.updateStateUntil(block);
    const int depth = codeFormatter.indentFor(block);

    if (isElectricCharacter(typedChar)) {
        // only reindent the current line when typing electric characters if the
        // indent is the same it would be if the line were empty
        const int newlineIndent = codeFormatter.indentForNewLineAfter(block.previous());
        if (ts.indentationColumn(block.text()) != newlineIndent)
            return;
    }

    ts.indentLine(block, depth);
}