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     // Variables --------------------------------------------------------------
  44     // ------------------------------------------------------------------------
  45
  46     /**
  47      * Hang onto my TText so I can resize it with the window.
  48      */
  49     private TText textField;
  50
  51     // ------------------------------------------------------------------------
  52     // Constructors -----------------------------------------------------------
  53     // ------------------------------------------------------------------------
  54
  55     /**
  56      * Public constructor makes a text window out of any string.
  57      *
  58      * @param parent the main application
  59      * @param title the text string
  60      * @param text the text string
  61      */
  62     public DemoTextWindow(final TApplication parent, final String title,
  63         final String text) {
  64
  65         super(parent, title, 0, 0, 44, 22, RESIZABLE);
  66         textField = addText(text, 1, 3, 40, 16);
  67
  68         addButton("&Left", 1, 1, new TAction() {
  69                 public void DO() {
  70                     textField.leftJustify();
  71                 }
  72         });
  73
  74         addButton("&Center", 10, 1, new TAction() {
  75                 public void DO() {
  76                     textField.centerJustify();
  77                 }
  78         });
  79
  80         addButton("&Right", 21, 1, new TAction() {
  81                 public void DO() {
  82                     textField.rightJustify();
  83                 }
  84         });
  85
  86         addButton("&Full", 31, 1, new TAction() {
  87                 public void DO() {
  88                     textField.fullJustify();
  89                 }
  90         });
  91
  92         statusBar = newStatusBar("Reflowable text window");
  93         statusBar.addShortcutKeypress(kbF1, cmHelp, "Help");
  94         statusBar.addShortcutKeypress(kbF2, cmShell, "Shell");
  95         statusBar.addShortcutKeypress(kbF3, cmOpen, "Open");
  96         statusBar.addShortcutKeypress(kbF10, cmExit, "Exit");
  97     }
  98
  99     /**
 100      * Public constructor.
 101      *
 102      * @param parent the main application
 103      */
 104     public DemoTextWindow(final TApplication parent) {
 105         this(parent, "Text Area",
 106 "This is an example of a reflowable text field.  Some example text follows.\n" +
 107 "\n" +
 108 "Notice that some menu items should be disabled when this window has focus.\n" +
 109 "\n" +
 110 "This library implements a text-based windowing system loosely " +
 111 "reminiscient of Borland's [Turbo " +
 112 "Vision](http://en.wikipedia.org/wiki/Turbo_Vision) library.  For those " +
 113 "wishing to use the actual C++ Turbo Vision library, see [Sergio " +
 114 "Sigala's updated version](http://tvision.sourceforge.net/) that runs " +
 115 "on many more platforms.\n" +
 116 "\n" +
 117 "This library is licensed MIT.  See the file LICENSE for the full license " +
 118 "for the details.\n");
 119
 120     }
 121
 122     // ------------------------------------------------------------------------
 123     // TWindow ----------------------------------------------------------------
 124     // ------------------------------------------------------------------------
 125
 126     /**
 127      * Handle window/screen resize events.
 128      *
 129      * @param event resize event
 130      */
 131     @Override
 132     public void onResize(final TResizeEvent event) {
 133         if (event.getType() == TResizeEvent.Type.WIDGET) {
 134             // Resize the text field
 135             TResizeEvent textSize = new TResizeEvent(TResizeEvent.Type.WIDGET,
 136                 event.getWidth() - 4, event.getHeight() - 6);
 137             textField.onResize(textSize);
 138             return;
 139         }
 140
 141         // Pass to children instead
 142         for (TWidget widget: getChildren()) {
 143             widget.onResize(event);
 144         }
 145     }
 146
 147     /**
 148      * Play with menu items.
 149      */
 150     public void onFocus() {
 151         getApplication().enableMenuItem(2001);
 152         getApplication().disableMenuItem(TMenu.MID_SHELL);
 153         getApplication().disableMenuItem(TMenu.MID_EXIT);
 154     }
 155
 156     /**
 157      * Called by application.switchWindow() when another window gets the
 158      * focus.
 159      */
 160     public void onUnfocus() {
 161         getApplication().disableMenuItem(2001);
 162         getApplication().enableMenuItem(TMenu.MID_SHELL);
 163         getApplication().enableMenuItem(TMenu.MID_EXIT);
 164     }
 165
 166 }