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

#ifndef BASEHOVERHANDLER_H
#define BASEHOVERHANDLER_H

#include "texteditor_global.h"
#include "helpitem.h"

#include <QObject>
#include <QString>

QT_BEGIN_NAMESPACE
class QPoint;
QT_END_NAMESPACE

namespace Core {
class IEditor;
}

namespace TextEditor {

class ITextEditor;
class BaseTextEditorWidget;

class TEXTEDITOR_EXPORT BaseHoverHandler : public QObject
{
    Q_OBJECT
public:
    BaseHoverHandler(QObject *parent = 0);
    virtual ~BaseHoverHandler();

private slots:
    void editorOpened(Core::IEditor *editor);
    void showToolTip(TextEditor::ITextEditor *editor, const QPoint &point, int pos);
    void updateContextHelpId(TextEditor::ITextEditor *editor, int pos);

protected:
    void setToolTip(const QString &tooltip);
    void appendToolTip(const QString &extension);
    const QString &toolTip() const;

    void addF1ToToolTip();

    void setIsDiagnosticTooltip(bool isDiagnosticTooltip);
    bool isDiagnosticTooltip() const;

    void setLastHelpItemIdentified(const HelpItem &help);
    const HelpItem &lastHelpItemIdentified() const;

    static BaseTextEditorWidget *baseTextEditor(ITextEditor *editor);

private:
    void clear();
    void process(ITextEditor *editor, int pos);

    virtual bool acceptEditor(Core::IEditor *editor) = 0;
    virtual void identifyMatch(ITextEditor *editor, int pos) = 0;
    virtual void decorateToolTip();
    virtual void operateTooltip(ITextEditor *editor, const QPoint &point);

    bool m_diagnosticTooltip;
    QString m_toolTip;
    HelpItem m_lastHelpItemIdentified;
};

} // namespace TextEditor

#endif // BASEHOVERHANDLER_H