DefaultMDIDialogBuilder class

The DefaultMDIDialogBuilder class further simplifies the creation of popup dialogs, allowing to create several rows of content, optionally enclosed in their titled borders.

Configuration of the DefaultMDIDialogBuilder

The DefaultMDIDialogBuilder class implements the MDIDialogBuilder interface, so all there is a corresponding setter for all the methods allowing to configure the MDIDialogBuilder:

• The DefaultMDIDialogBuilder.setDialogTitle(String) method allows to specify the title of the dialog (the title is "Dialog" by default)
• The DefaultMDIDialogBuilder.setModal(boolean) method allows to specify if the dialog is modal (it is modal by default)
• The DefaultMDIDialogBuilder.setResizable(boolean) method allows to specify if the dialog is resizable (it is resizable by default)
• The DefaultMDIDialogBuilder.setSize(Dimension) method allows to specify the the dimension of the dialog (by default the dimension is null, which means that the dialog window will pack its content)
• The DefaultMDIDialogBuilder.setYesLabel(String) method allows to specify the label of the Yes or OK button (it will be "Yes" for a Yes/Cancel dialog, and "OK", for a OK Dialog by default)
• The DefaultMDIDialogBuilder.setCancelLabel(String) method allows to specify the label of the Cancel button (it will be "Cancel" by default)
• The DefaultMDIDialogBuilder.setDialogType(short) method allows to specify the type of the dialog. (see dialog type for more information)
• The DefaultMDIDialogBuilder.setMessageType(int) method allows to specify the message type of the dialog. (see message type for more information)

Dialog type

The type of the dialog can be set through the DefaultMDIDialogBuilder.setDialogType(short) method. It can be:

• MDIDialogBuilder.OK_DIALOG for a dialog with only an OK button
• MDIDialogBuilder.OK_PRINT_DIALOG for a dialog with an OK button an a Print button
• MDIDialogBuilder.YES_CANCEL_DIALOG for a dialog with a Yes and a Cancel button
• MDIDialogBuilder.CUSTOM_DIALOG for a dialog with a custom bottom apply panel.In that case the MDIDialogBuilder.createApplyPanel() method will be used to specify this panel

Listening to the user actions

The DefaultMDIDialogBuilder$DialogListener interface allows to listen to user actions on the bottom dialog buttons. This listener can be set through the DefaultMDIDialogBuilder.setListener(DialogListener) method. This interface has sveral methods, all with a default empty implementation:

• The DefaultMDIDialogBuilder$DialogListener.apply() is called if the user clicks on the "OK" or "Yes" buttons
• The DefaultMDIDialogBuilder$DialogListener.cancel() is called if the user clicks on the "Cancel" button
• The DefaultMDIDialogBuilder$DialogListener.print(File) is called if the user clicks on the "Print" button, after the user has selected a File

OK_DIALOG type

The MDIDialogBuilder.OK_DIALOG is used for a dialog with only an OK button (this is the default option):

If the user clicks on the OK button, the DefaultMDIDialogBuilder$DialogListener.apply() method will be called (the default implementation does nothing).

OK_PRINT_DIALOG type

The MDIDialogBuilder.OK_PRINT_DIALOG is used for a dialog with only an OK button and a Print button:

If the user clicks on the OK button, the DefaultMDIDialogBuilder$DialogListener.apply() method will be called (the default implementation does nothing).

If the user clicks on the Print button, a file chooser will appear allowing the user to select a file where to save the dialog content. The DefaultMDIDialogBuilder.setPrintFileExtension(String) method allows to specify the extension of the file to save (the default is "txt").

After the file selection, the DefaultMDIDialogBuilder$DialogListener.print(File) method will be called (the default implementation does nothing).

YES_CANCEL_DIALOG type

The MDIDialogBuilder.YES_CANCEL_DIALOG is used for a dialog with only a Yes button and a Cancel button:

If the user clicks on the Yes button, the DefaultMDIDialogBuilder$DialogListener.apply() method will be called (the default implementation does nothing).

If the user press the "Cancel" button, the DefaultMDIDialogBuilder$DialogListener.cancel()method will be called.

Message type

The DefaultMDIDialogBuilder.setMessageType(int) method allows to specify the message type of the dialog, which will specify which icon to present at the left of the dialog. It can be:

• MDIDialogBuilder.PLAIN_MESSAGE will show a dialog without any icon (the default):
  
  
• MDIDialogBuilder.INFORMATION_MESSAGE will show a dialog with an information icon:
  
  
• MDIDialogBuilder.QUESTION_MESSAGE will show a dialog with a question icon:
  
  
• MDIDialogBuilder.WARNING_MESSAGE will show a dialog with a warning icon:
  
  
• MDIDialogBuilder.ERROR_MESSAGE will show a dialog with an error icon:
  
  

Creation of the DefaultMDIDialogBuilder content

Adding a part in the DefaultMDIDialogBuilder is done through one of the following methods:

• The DefaultMDIDialogBuilder.addVerticalDialogPart(JComponent...) adds one vertical part using the components provided as argument
• The DefaultMDIDialogBuilder.addVerticalDialogPart(String, JComponent...) adds one vertical part using the components provided as argument, and encloses it in a titled border
• The DefaultMDIDialogBuilder.addHorizontalDialogPart(JComponent...) adds one horizontal part using the components provided as argument
• The DefaultMDIDialogBuilder.addHorizontalDialogPart(String, JComponent...) adds one horizontal part using the components provided as argument, and encloses it in a titled border

The returned DefaultMDIDialogBuilder$DialogPart will correspond to one row in the dialog.

Showing the dialog

The DefaultMDIDialogBuilder class implements the MDIDialogBuilder interface, so showing the associated dialog is done exactly as for the MDIDialogBuilder:

• The GUIApplication.showDialog(MDIDialogBuilder) shows the dialog without any limitation
• The GUIApplication.showDialog(MDIDialogBuilder, MDIDialogType) allows to specify how the dialog is opened^[1]
  See also opening dialogs for more information

UNIQUE_INSTANCE dialogs

Using the MDIDialogType.UNIQUE_INSTANCE value for the second argument of the GUIApplication.showDialog(MDIDialogBuilder, MDIDialogType) method will ensure that only one dialog the same class can be opened at the same time:

• If the DefaultMDIDialogBuilder.setID(String) is not overridden (the default), then if will be impossible to open any instance of the DefaultMDIDialogBuilder class
• If the DefaultMDIDialogBuilder.setID(String) method is overridden, then if will be impossible to open any instance of the DefaultMDIDialogBuilder class with the same ID

Example

The following example creates a dialog presenting the width and height of an image:

      public class AnalyzeImageAction extends AbstractMDIAction {
         public AnalyzeImageAction(MDIApplication appli, String name) {
           super(appli, name);
           this.setDescription("Analyze", "Analyze Image");
         }

         @Override
         public void run() throws Exception {
           GUIApplication gui = ((GUIApplication) app);
           BufferedImage image = (BufferedImage) gui.getSelectedProperties().getObject();
           DefaultMDIDialogBuilder builder = new DefaultMDIDialogBuilder("Analyze Image");
           builder.addVerticalDialogPart("Size", new JLabel("Width: " + image.getWidth()), new JLabel("Height: " + image.getHeight()));
           gui.showDialog(builder, MDIDialogType.UNIQUE_INSTANCE);
         }
      }

with the following result: