src/com/googlecode/lanterna/gui2/dialogs/MessageDialog.java

   1 package com.googlecode.lanterna.gui2.dialogs;
   2
   3 import com.googlecode.lanterna.TerminalSize;
   4 import com.googlecode.lanterna.gui2.*;
   5
   6 /**
   7  * Simple message dialog that displays a message and has optional selection/confirmation buttons
   8  *
   9  * @author Martin
  10  */
  11 public class MessageDialog extends DialogWindow {
  12
  13     private MessageDialogButton result;
  14
  15     MessageDialog(
  16             String title,
  17             String text,
  18             MessageDialogButton... buttons) {
  19
  20         super(title);
  21         this.result = null;
  22         if(buttons == null || buttons.length == 0) {
  23             buttons = new MessageDialogButton[] { MessageDialogButton.OK };
  24         }
  25
  26         Panel buttonPanel = new Panel();
  27         buttonPanel.setLayoutManager(new GridLayout(buttons.length).setHorizontalSpacing(1));
  28         for(final MessageDialogButton button: buttons) {
  29             buttonPanel.addComponent(new Button(button.toString(), new Runnable() {
  30                 @Override
  31                 public void run() {
  32                     result = button;
  33                     close();
  34                 }
  35             }));
  36         }
  37
  38         Panel mainPanel = new Panel();
  39         mainPanel.setLayoutManager(
  40                 new GridLayout(1)
  41                         .setLeftMarginSize(1)
  42                         .setRightMarginSize(1));
  43         mainPanel.addComponent(new Label(text));
  44         mainPanel.addComponent(new EmptySpace(TerminalSize.ONE));
  45         buttonPanel.setLayoutData(
  46                 GridLayout.createLayoutData(
  47                         GridLayout.Alignment.END,
  48                         GridLayout.Alignment.CENTER,
  49                         false,
  50                         false))
  51                 .addTo(mainPanel);
  52         setComponent(mainPanel);
  53     }
  54
  55     /**
  56      * {@inheritDoc}
  57      * @param textGUI Text GUI to add the dialog to
  58      * @return The selected button's enum value
  59      */
  60     @Override
  61     public MessageDialogButton showDialog(WindowBasedTextGUI textGUI) {
  62         result = null;
  63         super.showDialog(textGUI);
  64         return result;
  65     }
  66
  67     /**
  68      * Shortcut for quickly displaying a message box
  69      * @param textGUI The GUI to display the message box on
  70      * @param title Title of the message box
  71      * @param text Main message of the message box
  72      * @param buttons Buttons that the user can confirm the message box with
  73      * @return Which button the user selected
  74      */
  75     public static MessageDialogButton showMessageDialog(
  76             WindowBasedTextGUI textGUI,
  77             String title,
  78             String text,
  79             MessageDialogButton... buttons) {
  80         MessageDialogBuilder builder = new MessageDialogBuilder()
  81                 .setTitle(title)
  82                 .setText(text);
  83         if(buttons.length == 0) {
  84             builder.addButton(MessageDialogButton.OK);
  85         }
  86         for(MessageDialogButton button: buttons) {
  87             builder.addButton(button);
  88         }
  89         return builder.build().showDialog(textGUI);
  90     }
  91 }