src/jexer/demos/DemoTextWindow.java

   1 /*
   2  * Jexer - Java Text User Interface
   3  *
   4  * License: LGPLv3 or later
   5  *
   6  * This module is licensed under the GNU Lesser General Public License
   7  * Version 3.  Please see the file "COPYING" in this directory for more
   8  * information about the GNU Lesser General Public License Version 3.
   9  *
  10  *     Copyright (C) 2015  Kevin Lamonte
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU Lesser General Public License
  14  * as published by the Free Software Foundation; either version 3 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public
  23  * License along with this program; if not, see
  24  * http://www.gnu.org/licenses/, or write to the Free Software
  25  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  26  * 02110-1301 USA
  27  *
  28  * @author Kevin Lamonte [kevin.lamonte@gmail.com]
  29  * @version 1
  30  */
  31 package jexer.demos;
  32
  33 import jexer.*;
  34 import jexer.event.*;
  35 import jexer.menu.*;
  36
  37 /**
  38  * This window demonstates the TText, THScroller, and TVScroller widgets.
  39  */
  40 public class DemoTextWindow extends TWindow {
  41
  42     /**
  43      * Hang onto my TText so I can resize it with the window.
  44      */
  45     private TText textField;
  46
  47     /**
  48      * Public constructor makes a text window out of any string.
  49      *
  50      * @param parent the main application
  51      * @param title the text string
  52      * @param text the text string
  53      */
  54     public DemoTextWindow(final TApplication parent, final String title,
  55         final String text) {
  56
  57         super(parent, title, 0, 0, 44, 20, RESIZABLE);
  58         textField = addText(text, 1, 1, 40, 16);
  59     }
  60
  61     /**
  62      * Public constructor.
  63      *
  64      * @param parent the main application
  65      */
  66     public DemoTextWindow(final TApplication parent) {
  67         this(parent, "Text Area",
  68 "This is an example of a reflowable text field.  Some example text follows.\n" +
  69 "\n" +
  70 "Notice that some menu items should be disabled when this window has focus.\n" +
  71 "\n" +
  72 "This library implements a text-based windowing system loosely\n" +
  73 "reminiscient of Borland's [Turbo\n" +
  74 "Vision](http://en.wikipedia.org/wiki/Turbo_Vision) library.  For those\n" +
  75 "wishing to use the actual C++ Turbo Vision library, see [Sergio\n" +
  76 "Sigala's updated version](http://tvision.sourceforge.net/) that runs\n" +
  77 "on many more platforms.\n" +
  78 "\n" +
  79 "This library is licensed LGPL (\"GNU Lesser General Public License\")\n" +
  80 "version 3 or greater.  See the file COPYING for the full license text,\n" +
  81 "which includes both the GPL v3 and the LGPL supplemental terms.\n" +
  82 "\n");
  83
  84     }
  85
  86     /**
  87      * Handle window/screen resize events.
  88      *
  89      * @param event resize event
  90      */
  91     @Override
  92     public void onResize(final TResizeEvent event) {
  93         if (event.getType() == TResizeEvent.Type.WIDGET) {
  94             // Resize the text field
  95             textField.setWidth(event.getWidth() - 4);
  96             textField.setHeight(event.getHeight() - 4);
  97             textField.reflow();
  98             return;
  99         }
 100
 101         // Pass to children instead
 102         for (TWidget widget: getChildren()) {
 103             widget.onResize(event);
 104         }
 105     }
 106
 107     /**
 108      * Play with menu items.
 109      */
 110     public void onFocus() {
 111         getApplication().enableMenuItem(2001);
 112         getApplication().disableMenuItem(TMenu.MID_SHELL);
 113         getApplication().disableMenuItem(TMenu.MID_EXIT);
 114     }
 115
 116     /**
 117      * Called by application.switchWindow() when another window gets the
 118      * focus.
 119      */
 120     public void onUnfocus() {
 121         getApplication().disableMenuItem(2001);
 122         getApplication().enableMenuItem(TMenu.MID_SHELL);
 123         getApplication().enableMenuItem(TMenu.MID_EXIT);
 124     }
 125
 126 }