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

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** Copyright (C) 2016 The Qt Company Ltd.
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#ifndef BASEHOVERHANDLER_H
#define BASEHOVERHANDLER_H

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

#include <QObject>

namespace Core { class IEditor; }

namespace TextEditor {

class BaseTextEditor;
class TextEditorWidget;

class TEXTEDITOR_EXPORT BaseHoverHandler : public QObject
{
    Q_OBJECT

public:
    BaseHoverHandler();
    ~BaseHoverHandler();

    QString contextHelpId(TextEditorWidget *widget, int pos);
    int checkToolTip(TextEditorWidget *widget, int pos);
    void showToolTip(TextEditorWidget *widget, const QPoint &point, int pos);

    int priority() const;

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

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

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

    virtual void decorateToolTip();
    virtual void operateTooltip(TextEditorWidget *editorWidget, const QPoint &point);

    enum {
        Priority_None = 0,
        Priority_Tooltip = 5,
        Priority_Help = 10,
        Priority_Diagnostic = 20
    };
    void setPriority(int priority);
private:
    void clear();
    void process(TextEditorWidget *widget, int pos);

    virtual void identifyMatch(TextEditorWidget *editorWidget, int pos);

    bool m_diagnosticTooltip;
    QString m_toolTip;
    HelpItem m_lastHelpItemIdentified;
    int m_priority;
};

} // namespace TextEditor

#endif // BASEHOVERHANDLER_H