bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/widgets/Combo2.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.browsing.ui.swt.widgets;
  13
  14 import java.util.List;
  15 import java.util.concurrent.CopyOnWriteArrayList;
  16
  17 import org.eclipse.swt.events.ModifyListener;
  18 import org.eclipse.swt.widgets.Composite;
  19 import org.eclipse.swt.widgets.Control;
  20 import org.eclipse.swt.widgets.Display;
  21 import org.simantics.Simantics;
  22 import org.simantics.browsing.ui.swt.widgets.impl.Widget;
  23 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;
  24 import org.simantics.db.ReadGraph;
  25 import org.simantics.db.common.request.ParametrizedRead;
  26 import org.simantics.db.common.request.UniqueRead;
  27 import org.simantics.db.exception.DatabaseException;
  28 import org.simantics.db.management.ISessionContext;
  29 import org.simantics.db.procedure.Listener;
  30 import org.simantics.utils.datastructures.Pair;
  31
  32 public class Combo2 extends WidgetImpl {
  33
  34         private WidgetSupport support;
  35     private final CopyOnWriteArrayList<ModifyListener> modifyListeners = new CopyOnWriteArrayList<ModifyListener>();
  36     private List<Pair<String, Object>> itemList;
  37
  38     final private Display display;
  39     final private org.eclipse.swt.widgets.Combo combo;
  40
  41     public Combo2(Composite parent, WidgetSupport support, int style) {
  42         super(support);
  43         this.display = parent.getDisplay();
  44         combo = new org.eclipse.swt.widgets.Combo(parent, style);
  45         combo.setData("org.simantics.browsing.ui.widgets.Combo", this);
  46         support.register(this);
  47     }
  48
  49     public void setAvailable(List<Pair<String, Object>> items) {
  50
  51         itemList = items;
  52         for(ModifyListener listener : modifyListeners) combo.removeModifyListener(listener);
  53         combo.setData(items);
  54         combo.clearSelection();
  55         try {
  56             combo.removeAll();
  57         } catch (Throwable t) {
  58             t.printStackTrace();
  59         }
  60         if (items != null) {
  61             int index = 0;
  62             for(Pair<String, Object> key : items) {
  63                 combo.add(key.first);
  64                 combo.setData(key.first, index++);
  65             }
  66             String selectionKey = (String)combo.getData("_SelectionKey");
  67             if(selectionKey != null) {
  68                 Integer selectionIndex = (Integer)combo.getData(selectionKey);
  69                 if(selectionIndex != null) combo.select(selectionIndex);
  70             }
  71         }
  72         for(ModifyListener listener : modifyListeners) combo.addModifyListener(listener);
  73
  74     }
  75
  76     public <T> void setAvailable(final ParametrizedRead<T, List<Pair<String, Object>>> read) {
  77
  78         Simantics.getSession().async(new UniqueRead<List<Pair<String, Object>>>() {
  79
  80                         @Override
  81                         public List<Pair<String, Object>> perform(ReadGraph graph) throws DatabaseException {
  82                                 T input = support.getInput(graph);
  83                                 return graph.syncRequest(read.get(input));
  84                         }
  85
  86         }, new Listener<List<Pair<String, Object>>>() {
  87
  88             @Override
  89             public void exception(Throwable t) {
  90                 t.printStackTrace();
  91             }
  92
  93             @Override
  94             public void execute(final List<Pair<String, Object>> items) {
  95                 if(isDisposed()) return;
  96                 display.asyncExec(new Runnable() {
  97
  98                     @Override
  99                     public void run() {
 100                         if(isDisposed()) return;
 101                         itemList = items;
 102                         for(ModifyListener listener : modifyListeners) combo.removeModifyListener(listener);
 103                         combo.setData(items);
 104                         combo.clearSelection();
 105                         try {
 106                             combo.removeAll();
 107                         } catch (Throwable t) {
 108                             t.printStackTrace();
 109                         }
 110                         if (items != null) {
 111                             int index = 0;
 112                             for(Pair<String, Object> key : items) {
 113                                 combo.add(key.first);
 114                                 combo.setData(key.first, index++);
 115                             }
 116                             String selectionKey = (String)combo.getData("_SelectionKey");
 117                             if(selectionKey != null) {
 118                                 Integer selectionIndex = (Integer)combo.getData(selectionKey);
 119                                 if(selectionIndex != null) combo.select(selectionIndex);
 120                             }
 121                         }
 122                         for(ModifyListener listener : modifyListeners) combo.addModifyListener(listener);
 123                     }
 124
 125                 });
 126             }
 127
 128             @Override
 129             public boolean isDisposed() {
 130                 return combo.isDisposed();
 131             }
 132
 133         });
 134
 135     }
 136
 137     public void setSelection(String selectionKey) {
 138
 139         if(selectionKey == null) return;
 140         for(ModifyListener listener : modifyListeners) combo.removeModifyListener(listener);
 141         combo.setData("_SelectionKey", selectionKey);
 142         Integer selectionIndex = (Integer)combo.getData(selectionKey);
 143         if(selectionIndex != null) combo.select(selectionIndex);
 144         for(ModifyListener listener : modifyListeners) combo.addModifyListener(listener);
 145
 146     }
 147
 148     public <T> void setSelection(final ParametrizedRead<T, String> read) {
 149
 150         Simantics.getSession().async(new UniqueRead<String>() {
 151
 152                         @Override
 153                         public String perform(ReadGraph graph) throws DatabaseException {
 154                                 T input = support.getInput(graph);
 155                                 return graph.syncRequest(read.get(input));
 156                         }
 157
 158         }, new Listener<String>() {
 159
 160             @Override
 161             public void exception(Throwable t) {
 162                 t.printStackTrace();
 163             }
 164
 165             @Override
 166             public void execute(final String selectionKey) {
 167                 if(isDisposed()) return;
 168                 display.asyncExec(new Runnable() {
 169
 170                     @Override
 171                     public void run() {
 172                         if(isDisposed()) return;
 173                         if(selectionKey == null) return;
 174                         for(ModifyListener listener : modifyListeners) combo.removeModifyListener(listener);
 175                         combo.setData("_SelectionKey", selectionKey);
 176                         Integer selectionIndex = (Integer)combo.getData(selectionKey);
 177                         if(selectionIndex != null) combo.select(selectionIndex);
 178                         for(ModifyListener listener : modifyListeners) combo.addModifyListener(listener);
 179                     }
 180
 181                 });
 182             }
 183
 184             @Override
 185             public boolean isDisposed() {
 186                 return combo.isDisposed();
 187             }
 188
 189         });
 190
 191     }
 192
 193     public org.eclipse.swt.widgets.Combo getWidget() {
 194         return combo;
 195     }
 196
 197     @Override
 198     public Control getControl() {
 199         return combo;
 200     }
 201
 202 //    private AtomicBoolean inputDisposed;
 203
 204     @Override
 205     public void setInput(ISessionContext context, Object input) {
 206
 207 //        if (this.inputDisposed != null)
 208 //            this.inputDisposed.set(true);
 209 //        final AtomicBoolean inputDisposed = this.inputDisposed = new AtomicBoolean(false);
 210
 211         if (modifyListeners != null) {
 212             for (ModifyListener listener : modifyListeners) {
 213                 if(listener instanceof Widget) {
 214                     ((Widget) listener).setInput(context, input);
 215                 }
 216             }
 217         }
 218
 219 //        if(itemFactory != null) {
 220 //            itemFactory.listen(context, input, new Listener<Map<String, Object>>() {
 221 //
 222 //                @Override
 223 //                public void exception(Throwable t) {
 224 //                    t.printStackTrace();
 225 //                }
 226 //
 227 //                @Override
 228 //                public void execute(final Map<String, Object> items) {
 229 //                    if(isDisposed()) return;
 230 //                    display.asyncExec(new Runnable() {
 231 //
 232 //                        @Override
 233 //                        public void run() {
 234 //                            if(isDisposed()) return;
 235 ////                            System.out.println("Combo received new items: " + items.size());
 236 //                            for(ModifyListener listener : modifyListeners) combo.removeModifyListener(listener);
 237 //                            combo.setData(items);
 238 //                            combo.clearSelection();
 239 //                            try {
 240 //                                combo.removeAll();
 241 //                            } catch (Throwable t) {
 242 //                                t.printStackTrace();
 243 //                            }
 244 //                            int index = 0;
 245 //                            for(String key : items.keySet()) {
 246 ////                                System.out.println("-" + key);
 247 //                                combo.add(key);
 248 //                                combo.setData(key, index++);
 249 //                            }
 250 //                            String selectionKey = (String)combo.getData("_SelectionKey");
 251 //                            if(selectionKey != null) {
 252 //                                Integer selectionIndex = (Integer)combo.getData(selectionKey);
 253 //                                if(selectionIndex != null) combo.select(selectionIndex);
 254 //                            }
 255 //                            for(ModifyListener listener : modifyListeners) combo.addModifyListener(listener);
 256 //                            //label.setSize(200, 20);
 257 ////                            label.getParent().layout();
 258 ////                            label.getParent().getParent().layout();
 259 //                        }
 260 //
 261 //                    });
 262 //                }
 263 //
 264 //                @Override
 265 //                public boolean isDisposed() {
 266 //                    return combo.isDisposed() || inputDisposed.get();
 267 //                }
 268 //
 269 //            });
 270 //        }
 271 //
 272 //        if(itemFactory2 != null) {
 273 //            itemFactory2.listen(context, input, new Listener<List<Pair<String, Object>>>() {
 274 //
 275 //                @Override
 276 //                public void exception(Throwable t) {
 277 //                    t.printStackTrace();
 278 //                }
 279 //
 280 //                @Override
 281 //                public void execute(final List<Pair<String, Object>> items) {
 282 //                    if(isDisposed()) return;
 283 //                    display.asyncExec(new Runnable() {
 284 //
 285 //                        @Override
 286 //                        public void run() {
 287 //                            if(isDisposed()) return;
 288 ////                            System.out.println("Combo received new items: " + items.size());
 289 //                            itemList = items;
 290 //                            for(ModifyListener listener : modifyListeners) combo.removeModifyListener(listener);
 291 //                            combo.setData(items);
 292 //                            combo.clearSelection();
 293 //                            try {
 294 //                                combo.removeAll();
 295 //                            } catch (Throwable t) {
 296 //                                t.printStackTrace();
 297 //                            }
 298 //                            if (items != null) {
 299 //                                int index = 0;
 300 //                                for(Pair<String, Object> key : items) {
 301 ////                                    System.out.println("-" + key);
 302 //                                    combo.add(key.first);
 303 //                                    combo.setData(key.first, index++);
 304 //                                }
 305 //                                String selectionKey = (String)combo.getData("_SelectionKey");
 306 //                                if(selectionKey != null) {
 307 //                                    Integer selectionIndex = (Integer)combo.getData(selectionKey);
 308 //                                    if(selectionIndex != null) combo.select(selectionIndex);
 309 //                                }
 310 //                            }
 311 //                            for(ModifyListener listener : modifyListeners) combo.addModifyListener(listener);
 312 //                            //label.setSize(200, 20);
 313 ////                                                    label.getParent().layout();
 314 ////                                                    label.getParent().getParent().layout();
 315 //                        }
 316 //
 317 //                    });
 318 //                }
 319 //
 320 //                @Override
 321 //                public boolean isDisposed() {
 322 //                    return combo.isDisposed() || inputDisposed.get();
 323 //                }
 324 //
 325 //            });
 326 //        }
 327 //
 328 //        if(selectionFactory != null) {
 329 //            selectionFactory.listen(context, input, new Listener<String>() {
 330 //
 331 //                @Override
 332 //                public void exception(Throwable t) {
 333 //                    t.printStackTrace();
 334 //                }
 335 //
 336 //                @Override
 337 //                public void execute(final String selectionKey) {
 338 //                    if(isDisposed()) return;
 339 //                    display.asyncExec(new Runnable() {
 340 //
 341 //                        @Override
 342 //                        public void run() {
 343 //                            if(isDisposed()) return;
 344 //                            if(selectionKey == null) return;
 345 ////                            System.out.println("Combo received new selection key: " + selectionKey);
 346 //                            for(ModifyListener listener : modifyListeners) combo.removeModifyListener(listener);
 347 //                            combo.setData("_SelectionKey", selectionKey);
 348 //                            Integer selectionIndex = (Integer)combo.getData(selectionKey);
 349 //                            if(selectionIndex != null) combo.select(selectionIndex);
 350 //                            for(ModifyListener listener : modifyListeners) combo.addModifyListener(listener);
 351 //                        }
 352 //
 353 //                    });
 354 //                }
 355 //
 356 //                @Override
 357 //                public boolean isDisposed() {
 358 //                    return combo.isDisposed() || inputDisposed.get();
 359 //                }
 360 //
 361 //            });
 362 //        }
 363
 364     }
 365
 366     public synchronized void addModifyListener(ModifyListener listener) {
 367         modifyListeners.add(listener);
 368         combo.addModifyListener(listener);
 369     }
 370
 371     /**
 372      * @param index
 373      * @return
 374      * @throws IndexOutOfBoundsException if index is outside widget bounds
 375      */
 376     @SuppressWarnings("unchecked")
 377     public <T> Pair<String, T> getData(int index) {
 378 //        if (itemFactory != null)
 379 //            new IllegalStateException("this method is only useful when used with Combo.setItemFactory2").printStackTrace();
 380         if (index == -1)
 381             return null;
 382         return (Pair<String, T>) itemList.get(index);
 383     }
 384
 385     /**
 386      * @return selected combo list item or <code>null</code> if no item is
 387      *         selected
 388      */
 389     public <T> Pair<String, T> getSelectedData() {
 390         return getData(combo.getSelectionIndex());
 391     }
 392
 393 }