virtual QString category() const;
virtual QString title() const;
- virtual bool hasChanged() const = 0;
+ bool hasChanged() const;
+
+ //! Called immediately before save() is called.
+ /** Derived classes should return false if saving is not possible (e.g. the current settings are invalid).
+ * \return false, if the SettingsPage cannot be saved in its current state.
+ */
+ virtual bool aboutToSave();
public slots:
virtual void save() = 0;
virtual void defaults() = 0;
protected slots:
- //! Calling this slot is equivalent to emitting changed(true).
+ //! Calling this slot is equivalent to calling changeState(true).
void changed();
protected:
void changeState(bool hasChanged = true);
signals:
+ //! Emitted whenever the widget state changes.
void changed(bool hasChanged);
private: