jtulach@307: package org.apidesign.exceptions.trycatchredo;
jtulach@307: 
jtulach@307: import java.io.IOException;
jtulach@309: import javax.swing.JOptionPane;
jtulach@307: 
jtulach@310: /** Specialized I/O exception to request some kind of user confirmation.
jtulach@310:  * A code that needs to ask user shall not attempt to open a dialog itself,
jtulach@310:  * rather it shall emit this exception and let its callers show the dialog
jtulach@310:  * at appropriate time.
jtulach@307:  *
jtulach@307:  * @author Jaroslav Tulach
jtulach@310:  * @since 2.0
jtulach@307:  */
jtulach@307: public abstract class UserQuestionException extends IOException {
jtulach@310:     /** Description of the dialog to show to the user. Whoever catches
jtulach@310:      * this exception shall use {@link #getQuestionPane()}.{@link JOptionPane#createDialog(java.lang.String)}
jtulach@310:      * to construct and display the dialog.
jtulach@310:      * 
jtulach@310:      * @return the pane to display to user
jtulach@310:      */
jtulach@309:     public abstract JOptionPane getQuestionPane();
jtulach@310:     /** When the user confirms (or rejects) message presented by the
jtulach@310:      * {@link #getQuestionPane()} dialog, the exception shall be notified
jtulach@310:      * by calling this method with {@link JOptionPane#getValue()} option.
jtulach@310:      *
jtulach@310:      * @param option the option selected by the user
jtulach@310:      */
jtulach@309:     public abstract void confirm(Object option);
jtulach@307: }