bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/hints/HintStackTest.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 /*\r
  13  *\r
  14  * @author Toni Kalajainen\r
  15  */\r
  16 package org.simantics.utils.datastructures.hints;\r
  17 \r
  18 import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
  19 import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
  20 \r
  21 public class HintStackTest {\r
  22 \r
  23         public static final Key KEY = new KeyOf(Double.class);\r
  24         \r
  25         /**\r
  26          * @param args\r
  27          */\r
  28         public static void main(String[] args) {\r
  29                 IHintStack stack = new HintStack();\r
  30                 stack.addHintListener(new IHintListener() {\r
  31                         @Override\r
  32                         public void hintChanged(IHintObservable sender, Key key,\r
  33                                         Object oldValue, Object newValue) {\r
  34                                 System.out.println("Hint changed: "+key+"="+newValue+" (was "+oldValue+")");\r
  35                         }\r
  36 \r
  37                         @Override\r
  38                         public void hintRemoved(IHintObservable sender, Key key,\r
  39                                         Object oldValue) {\r
  40                                 System.out.println("Hint removed: "+key+" (was "+oldValue+")");\r
  41                         }});\r
  42                 IHintContext c1 = new HintContext();\r
  43                 IHintContext c2 = new HintContext();\r
  44                 \r
  45                 c1.setHint(KEY, 1.0);\r
  46                 c2.setHint(KEY, 2.0);\r
  47                 \r
  48                 // KEY added\r
  49                 stack.addHintContext(c1, 0);\r
  50                 // KEY overridden\r
  51                 stack.addHintContext(c2, 1);\r
  52                 \r
  53                 // underlying removed, do not do anything\r
  54                 stack.removeHintContext(c1);\r
  55                 \r
  56                 // add over prev value, override\r
  57                 stack.addHintContext(c1, 2);\r
  58                 \r
  59                 // should not do anything, is overridden\r
  60                 c2.setHint(KEY, 3.0);\r
  61                 \r
  62                 // changed. overrides c2\r
  63                 c1.setHint(KEY, 4.0);\r
  64                 \r
  65                 // removed. c2's value 3 becomes effective\r
  66                 c1.removeHint(KEY);\r
  67         }\r
  68 \r
  69 }\r