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DialogListener |
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package ij.gui; import ij.*; import java.awt.AWTEvent; /** * PlugIns or PlugInFilters that want to listen to changes in a GenericDialog * without adding listeners for each dialog field should implement this method. * The various dialog items can be read by the gd.getNextNumber etc. methods * in the dialogItemChanged method of a PlugIn orPlugInFilter. * The PlugIn or PlugInFilter has to be added to the GenericDialog by * its addDialogListener method. */ public interface DialogListener { /** * This method is invoked by a Generic Dialog if any of the inputs have changed * (CANCEL does not trigger it; OK and running the dialog from a macro only * trigger the first DialogListener added to a GenericDialog). * * @param e The event that has been generated by the user action in the dialog. * Note that <code>e</code> is <code>null</code> if the * dialogItemChanged method is called after the user has pressed the * OK button or if the GenericDialog has read its parameters from a * macro. * @param gd A reference to the GenericDialog. * @return Should be true if the dialog input is valid. False disables the * OK button and preview (if any). */ boolean dialogItemChanged(GenericDialog gd, AWTEvent e); }
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DialogListener |
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