qt-creator/src/plugins/texteditor/basehoverhandler.h

/**************************************************************************
**
** 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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#ifndef BASEHOVERHANDLER_H
#define BASEHOVERHANDLER_H

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

#include <QtCore/QObject>
#include <QtCore/QString>

QT_BEGIN_NAMESPACE
class QPoint;
QT_END_NAMESPACE

namespace Core {
class IEditor;
}

namespace TextEditor {

class ITextEditor;
class BaseTextEditor;

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

private slots:
    void editorOpened(Core::IEditor *editor);

public slots:
    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 setLastHelpItemIdentified(const HelpItem &help);
    const HelpItem &lastHelpItemIdentified() const;

    static BaseTextEditor *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);

    QString m_toolTip;
    HelpItem m_lastHelpItemIdentified;
};

} // namespace TextEditor

#endif // BASEHOVERHANDLER_H