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/****************************************************************************
**
** 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.
**
****************************************************************************/

#ifndef QMLJSSEMANTICHIGHLIGHTER_H
#define QMLJSSEMANTICHIGHLIGHTER_H

#include <texteditor/semantichighlighter.h>
#include <QFutureWatcher>

namespace QmlJS {
class ScopeChain;
namespace AST {
class SourceLocation;
}
}

namespace TextEditor {
class FontSettings;
}

namespace QmlJSEditor {

class QmlJSTextEditorWidget;

namespace Internal {

class SemanticHighlighter : public QObject
{
    Q_OBJECT
public:
    enum UseType
    {
        UnknownType,
        LocalIdType, // ids in the same file
        ExternalIdType, // ids from instantiating files
        QmlTypeType, // qml types
        RootObjectPropertyType, // property in root object
        ScopeObjectPropertyType, // property in scope object
        ExternalObjectPropertyType, // property in root object of instantiating file
        JsScopeType, // var or function in local js scope
        JsImportType, // name of js import
        JsGlobalType, // in global scope
        LocalStateNameType, // name of a state in the current file
        BindingNameType, // name on the left hand side of a binding
        FieldType // member of an object
    };

    typedef TextEditor::SemanticHighlighter::Result Use;

    SemanticHighlighter(QmlJSTextEditorWidget *editor);

    void rerun(const QmlJS::ScopeChain &scopeChain);
    void cancel();

    int startRevision() const;

    void updateFontSettings(const TextEditor::FontSettings &fontSettings);

private slots:
    void applyResults(int from, int to);
    void finished();

private:
    QFutureWatcher<Use>  m_watcher;
    QmlJSTextEditorWidget *m_editor;
    int m_startRevision;
    QHash<int, QTextCharFormat> m_formats;
};

} // namespace Internal
} // namespace QmlJSEditor

#endif // QMLJSSEMANTICHIGHLIGHTER_H