src/jexer/TMenu.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;
  32
  33 import jexer.bits.MnemonicString;
  34
  35 /**
  36  * TMenu is a top-level collection of TMenuItems.
  37  */
  38 public class TMenu extends TWindow {
  39
  40     /**
  41      * If true, this is a sub-menu.
  42      */
  43     private boolean isSubMenu = false;
  44
  45     /**
  46      * The shortcut and title.
  47      */
  48     private MnemonicString mnemonic;
  49
  50     // Reserved menu item IDs
  51     public static final int MID_UNUSED          = -1;
  52
  53     // File menu
  54     public static final int MID_EXIT            = 1;
  55     public static final int MID_QUIT            = MID_EXIT;
  56     public static final int MID_OPEN_FILE       = 2;
  57     public static final int MID_SHELL           = 3;
  58
  59     // Edit menu
  60     public static final int MID_CUT             = 10;
  61     public static final int MID_COPY            = 11;
  62     public static final int MID_PASTE           = 12;
  63     public static final int MID_CLEAR           = 13;
  64
  65     // Window menu
  66     public static final int MID_TILE            = 20;
  67     public static final int MID_CASCADE         = 21;
  68     public static final int MID_CLOSE_ALL       = 22;
  69     public static final int MID_WINDOW_MOVE     = 23;
  70     public static final int MID_WINDOW_ZOOM     = 24;
  71     public static final int MID_WINDOW_NEXT     = 25;
  72     public static final int MID_WINDOW_PREVIOUS = 26;
  73     public static final int MID_WINDOW_CLOSE    = 27;
  74
  75     /**
  76      * Public constructor.
  77      *
  78      * @param parent parent application
  79      * @param x column relative to parent
  80      * @param y row relative to parent
  81      * @param label mnemonic menu title.  Label must contain a keyboard
  82      * shortcut (mnemonic), denoted by prefixing a letter with "&",
  83      * e.g. "&File"
  84      */
  85     public TMenu(final TApplication parent, final int x, final int y,
  86         final String label) {
  87
  88         super(parent, label, x, y, parent.getScreen().getWidth(),
  89             parent.getScreen().getHeight());
  90
  91         // My parent constructor added me as a window, get rid of that
  92         parent.closeWindow(this);
  93
  94         // Setup the menu shortcut
  95         mnemonic = new MnemonicString(title);
  96         this.title = mnemonic.getRawLabel();
  97         assert (mnemonic.getShortcutIdx() >= 0);
  98
  99         // Recompute width and height to reflect an empty menu
 100         width = this.title.length() + 4;
 101         height = 2;
 102
 103         this.active = false;
 104     }
 105
 106 }