net.sf.jguiraffe.gui.builder.window

Interface WindowClosingStrategy

All Known Implementing Classes:

InvariantWindowClosingStrategy

public interface WindowClosingStrategy

Definition of an interface used to control whether a window can be closed.

A Window object can be passed an implementation of this interface. Whenever the user wants to close the window (by clicking the close button or using a similar mechanism) the canClose() method will be invoked to check if closing the window is allowed. If this method returns false the close operation will be aborted.

A typical use case for this interface is displaying a confirmation message if there is unsaved data: Only if the user confirms that changed data can be thrown away, the window will be closed.

Version:

$Id: WindowClosingStrategy.java 205 2012-01-29 18:29:57Z oheger $

Author:

Oliver Heger

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canClose(Window window) Checks if the window can be closed.

Method Detail

canClose

boolean canClose(Window window)

Checks if the window can be closed. An implementation can perform any necessary operation to find out if closing the window at this moment is allowed. Only if true is returned, the window will be closed; otherwise it will remain open.

Parameters:

window - a reference to the associated window

Returns:

a flag whether the window can be closed