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/**************************************************************************
**
** 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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**
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** Contact: Nokia Corporation (info@qt.nokia.com)
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**
**
** GNU Lesser General Public License Usage
**
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** 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.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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** 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.
**
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** If you have questions regarding the use of this file, please contact
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** Nokia at info@qt.nokia.com.
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**
**************************************************************************/

#ifndef GLSLEDITOR_H
#define GLSLEDITOR_H

#include "glsleditor_global.h"
#include "glsleditoreditable.h"

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#include <glsl/glsl.h>

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#include <texteditor/basetexteditor.h>
#include <texteditor/quickfix.h>

#include <QtCore/QSharedPointer>
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#include <QtCore/QSet>
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QT_BEGIN_NAMESPACE
class QComboBox;
class QTimer;
QT_END_NAMESPACE

namespace Core {
class ICore;
}

namespace GLSLEditor {
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class GLSLTextEditorWidget;
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class GLSLEDITOR_EXPORT Document
{
public:
    typedef QSharedPointer<Document> Ptr;

    Document();
    ~Document();

    GLSL::Engine *engine() const { return _engine; }
    GLSL::TranslationUnitAST *ast() const { return _ast; }
    GLSL::Scope *globalScope() const { return _globalScope; }

    GLSL::Scope *scopeAt(int position) const;
    void addRange(const QTextCursor &cursor, GLSL::Scope *scope);

private:
    struct Range {
        QTextCursor cursor;
        GLSL::Scope *scope;
    };

    GLSL::Engine *_engine;
    GLSL::TranslationUnitAST *_ast;
    GLSL::Scope *_globalScope;
    QList<Range> _cursors;

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    friend class GLSLTextEditorWidget;
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};
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class GLSLEDITOR_EXPORT GLSLTextEditorWidget : public TextEditor::BaseTextEditorWidget
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{
    Q_OBJECT

public:
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    GLSLTextEditorWidget(QWidget *parent = 0);
    ~GLSLTextEditorWidget();
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    virtual void unCommentSelection();

    int editorRevision() const;
    bool isOutdated() const;

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    QSet<QString> identifiers() const;

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    int languageVariant() const;
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    Document::Ptr glslDocument() const;

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    TextEditor::IAssistInterface *createAssistInterface(TextEditor::AssistKind assistKind,
                                                        TextEditor::AssistReason reason) const;

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public slots:
    virtual void setFontSettings(const TextEditor::FontSettings &);

private slots:
    void updateDocument();
    void updateDocumentNow();

protected:
    bool event(QEvent *e);
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    TextEditor::BaseTextEditor *createEditor();
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    void createToolBar(Internal::GLSLEditorEditable *editable);

private:
    void setSelectedElements();
    QString wordUnderCursor() const;

    QTimer *m_updateDocumentTimer;
    QComboBox *m_outlineCombo;
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    Document::Ptr m_glslDocument;
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};

} // namespace GLSLEditor

#endif // GLSLEDITOR_H