src/jexer/demos/DemoTreeViewWindow.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 java.io.IOException;
  32
  33 import jexer.*;
  34 import jexer.event.*;
  35 import jexer.ttree.*;
  36 import static jexer.TCommand.*;
  37 import static jexer.TKeypress.*;
  38
  39 /**
  40  * This window demonstates the TTreeView widget.
  41  */
  42 public class DemoTreeViewWindow extends TWindow {
  43
  44     /**
  45      * Hang onto my TTreeView so I can resize it with the window.
  46      */
  47     private TTreeViewWidget treeView;
  48
  49     /**
  50      * Public constructor.
  51      *
  52      * @param parent the main application
  53      * @throws IOException if a java.io operation throws
  54      */
  55     public DemoTreeViewWindow(final TApplication parent) throws IOException {
  56         super(parent, "Tree View", 0, 0, 44, 16, TWindow.RESIZABLE);
  57
  58         // Load the treeview with "stuff"
  59         treeView = addTreeViewWidget(1, 1, 40, 12);
  60         new TDirectoryTreeItem(treeView, ".", true);
  61
  62         statusBar = newStatusBar("Treeview demonstration");
  63         statusBar.addShortcutKeypress(kbF1, cmHelp, "Help");
  64         statusBar.addShortcutKeypress(kbF2, cmShell, "Shell");
  65         statusBar.addShortcutKeypress(kbF3, cmOpen, "Open");
  66         statusBar.addShortcutKeypress(kbF10, cmExit, "Exit");
  67     }
  68
  69     /**
  70      * Handle window/screen resize events.
  71      *
  72      * @param resize resize event
  73      */
  74     @Override
  75     public void onResize(final TResizeEvent resize) {
  76         if (resize.getType() == TResizeEvent.Type.WIDGET) {
  77             // Resize the treeView field
  78             TResizeEvent treeSize = new TResizeEvent(TResizeEvent.Type.WIDGET,
  79                 resize.getWidth() - 4, resize.getHeight() - 4);
  80             treeView.onResize(treeSize);
  81             return;
  82         }
  83
  84         // Pass to children instead
  85         for (TWidget widget: getChildren()) {
  86             widget.onResize(resize);
  87         }
  88     }
  89
  90 }