src/jexer/demos/DemoTextWindow.java

   1 /*
   2  * Jexer - Java Text User Interface
   3  *
   4  * The MIT License (MIT)
   5  *
   6  * Copyright (C) 2017 Kevin Lamonte
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  *
  26  * @author Kevin Lamonte [kevin.lamonte@gmail.com]
  27  * @version 1
  28  */
  29 package jexer.demos;
  30
  31 import jexer.*;
  32 import jexer.event.*;
  33 import jexer.menu.*;
  34 import static jexer.TCommand.*;
  35 import static jexer.TKeypress.*;
  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, 22, RESIZABLE);
  58         textField = addText(text, 1, 3, 40, 16);
  59
  60         addButton("&Left", 1, 1, new TAction() {
  61                 public void DO() {
  62                     textField.leftJustify();
  63                 }
  64         });
  65
  66         addButton("&Center", 10, 1, new TAction() {
  67                 public void DO() {
  68                     textField.centerJustify();
  69                 }
  70         });
  71
  72         addButton("&Right", 21, 1, new TAction() {
  73                 public void DO() {
  74                     textField.rightJustify();
  75                 }
  76         });
  77
  78         addButton("&Full", 31, 1, new TAction() {
  79                 public void DO() {
  80                     textField.fullJustify();
  81                 }
  82         });
  83
  84         statusBar = newStatusBar("Reflowable text window");
  85         statusBar.addShortcutKeypress(kbF1, cmHelp, "Help");
  86         statusBar.addShortcutKeypress(kbF2, cmShell, "Shell");
  87         statusBar.addShortcutKeypress(kbF3, cmOpen, "Open");
  88         statusBar.addShortcutKeypress(kbF10, cmExit, "Exit");
  89     }
  90
  91     /**
  92      * Public constructor.
  93      *
  94      * @param parent the main application
  95      */
  96     public DemoTextWindow(final TApplication parent) {
  97         this(parent, "Text Area",
  98 "This is an example of a reflowable text field.  Some example text follows.\n" +
  99 "\n" +
 100 "Notice that some menu items should be disabled when this window has focus.\n" +
 101 "\n" +
 102 "This library implements a text-based windowing system loosely " +
 103 "reminiscient of Borland's [Turbo " +
 104 "Vision](http://en.wikipedia.org/wiki/Turbo_Vision) library.  For those " +
 105 "wishing to use the actual C++ Turbo Vision library, see [Sergio " +
 106 "Sigala's updated version](http://tvision.sourceforge.net/) that runs " +
 107 "on many more platforms.\n" +
 108 "\n" +
 109 "This library is licensed MIT.  See the file LICENSE for the full license " +
 110 "for the details.\n");
 111
 112     }
 113
 114     /**
 115      * Handle window/screen resize events.
 116      *
 117      * @param event resize event
 118      */
 119     @Override
 120     public void onResize(final TResizeEvent event) {
 121         if (event.getType() == TResizeEvent.Type.WIDGET) {
 122             // Resize the text field
 123             TResizeEvent textSize = new TResizeEvent(TResizeEvent.Type.WIDGET,
 124                 event.getWidth() - 4, event.getHeight() - 6);
 125             textField.onResize(textSize);
 126             return;
 127         }
 128
 129         // Pass to children instead
 130         for (TWidget widget: getChildren()) {
 131             widget.onResize(event);
 132         }
 133     }
 134
 135     /**
 136      * Play with menu items.
 137      */
 138     public void onFocus() {
 139         getApplication().enableMenuItem(2001);
 140         getApplication().disableMenuItem(TMenu.MID_SHELL);
 141         getApplication().disableMenuItem(TMenu.MID_EXIT);
 142     }
 143
 144     /**
 145      * Called by application.switchWindow() when another window gets the
 146      * focus.
 147      */
 148     public void onUnfocus() {
 149         getApplication().disableMenuItem(2001);
 150         getApplication().enableMenuItem(TMenu.MID_SHELL);
 151         getApplication().enableMenuItem(TMenu.MID_EXIT);
 152     }
 153
 154 }