bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/Text.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2012 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 package org.simantics.browsing.ui.swt.widgets;\r
  13 \r
  14 import org.eclipse.swt.widgets.Composite;\r
  15 import org.eclipse.swt.widgets.Control;\r
  16 import org.simantics.Simantics;\r
  17 import org.simantics.browsing.ui.swt.widgets.impl.ReadFactory;\r
  18 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
  19 import org.simantics.db.ReadGraph;\r
  20 import org.simantics.db.common.request.ParametrizedRead;\r
  21 import org.simantics.db.common.request.UniqueRead;\r
  22 import org.simantics.db.exception.DatabaseException;\r
  23 import org.simantics.db.management.ISessionContext;\r
  24 import org.simantics.db.procedure.Listener;\r
  25 import org.simantics.utils.ui.SWTUtils;\r
  26 \r
  27 public class Text extends WidgetImpl {\r
  28 \r
  29         private ReadFactory<?, String> textFactory;\r
  30         \r
  31         final private org.eclipse.swt.widgets.Text text;\r
  32         \r
  33         public Text(Composite parent, WidgetSupport support, int style) {\r
  34                 super(support);\r
  35                 text = new org.eclipse.swt.widgets.Text(parent, style);\r
  36                 support.register(this);\r
  37         }\r
  38         \r
  39         public void setTextFactory(ReadFactory<?, String> textFactory) {\r
  40                 this.textFactory = textFactory;\r
  41         }\r
  42         \r
  43         public org.eclipse.swt.widgets.Text getWidget() {\r
  44                 return text;\r
  45         }\r
  46         \r
  47         @Override\r
  48         public Control getControl() {\r
  49                 return text;\r
  50         }\r
  51 \r
  52         @Override\r
  53         public void setInput(ISessionContext context, Object input) {\r
  54 \r
  55                 if(textFactory != null) {\r
  56                         textFactory.listen(context, input, new Listener<String>() {\r
  57 \r
  58                                 public void exception(final Throwable t) {\r
  59                                         SWTUtils.asyncExec(text, new Runnable() {\r
  60 \r
  61                                                 @Override\r
  62                                                 public void run() {\r
  63                                                         if(isDisposed()) return;\r
  64 //                                                      System.out.println("Button received new text: " + text);\r
  65                                                         text.setText(t.toString());\r
  66                                                 }\r
  67 \r
  68                                         });\r
  69                                 }\r
  70 \r
  71                                 @Override\r
  72                                 public void execute(final String s) {\r
  73                                         SWTUtils.asyncExec(text, new Runnable() {\r
  74 \r
  75                                                 @Override\r
  76                                                 public void run() {\r
  77                                                         if(isDisposed()) return;\r
  78                                                         text.setText(s);\r
  79                                                 }\r
  80 \r
  81                                         });\r
  82                                 }\r
  83 \r
  84                                 @Override\r
  85                                 public boolean isDisposed() {\r
  86                                         return text.isDisposed();\r
  87                                 }\r
  88 \r
  89                         });\r
  90                 \r
  91                 }\r
  92                 \r
  93         }\r
  94         \r
  95         public void setText(String s) {\r
  96                 text.setText(s);\r
  97         }\r
  98 \r
  99     public <T> void setText(final ParametrizedRead<T, String> read) {\r
 100         \r
 101         Simantics.getSession().async(new UniqueRead<String>() {\r
 102 \r
 103                 @Override\r
 104                 public String perform(ReadGraph graph) throws DatabaseException {\r
 105                         T input = support.getInput(graph);\r
 106                         return graph.syncRequest(read.get(input));\r
 107                 }\r
 108 \r
 109         }, new Listener<String>() {\r
 110 \r
 111                 @Override\r
 112                 public void exception(Throwable t) {\r
 113                         t.printStackTrace();\r
 114                 }\r
 115 \r
 116                 @Override\r
 117                 public void execute(final String _text) {\r
 118 \r
 119                         if(isDisposed()) return;\r
 120 \r
 121                         text.getDisplay().asyncExec(new Runnable() {\r
 122 \r
 123                                 @Override\r
 124                                 public void run() {\r
 125                                         if(_text == null) text.setText("");\r
 126                                         else text.setText(_text);\r
 127                                 }\r
 128 \r
 129                         });\r
 130                 }\r
 131 \r
 132                 @Override\r
 133                 public boolean isDisposed() {\r
 134                         return text.isDisposed();\r
 135                 }\r
 136 \r
 137         });\r
 138 \r
 139     }\r
 140         \r
 141 }\r