gerrit.simantics Code Review - simantics/platform.git/blob

   1 package org.simantics.views.swt.client.base;\r
   2 \r
   3 import java.lang.reflect.Field;\r
   4 import java.lang.reflect.InvocationTargetException;\r
   5 import java.lang.reflect.Method;\r
   6 import java.util.HashMap;\r
   7 import java.util.Map;\r
   8 \r
   9 import org.eclipse.jface.resource.ColorDescriptor;\r
  10 import org.eclipse.jface.resource.FontDescriptor;\r
  11 import org.eclipse.jface.resource.ResourceManager;\r
  12 import org.eclipse.swt.widgets.Control;\r
  13 import org.simantics.databoard.Bindings;\r
  14 import org.simantics.databoard.binding.ArrayBinding;\r
  15 import org.simantics.databoard.binding.Binding;\r
  16 import org.simantics.databoard.binding.error.BindingConstructionException;\r
  17 import org.simantics.databoard.binding.error.BindingException;\r
  18 import org.simantics.databoard.binding.reflection.BindingRequest;\r
  19 import org.simantics.datatypes.literal.Font;\r
  20 import org.simantics.datatypes.literal.RGB;\r
  21 import org.simantics.scenegraph.LoaderNode;\r
  22 import org.simantics.scenegraph.loader.ScenegraphLoaderUtils;\r
  23 import org.simantics.scl.runtime.function.Function1;\r
  24 import org.simantics.scl.runtime.function.Function2;\r
  25 import org.simantics.scl.runtime.function.FunctionImpl1;\r
  26 import org.simantics.ui.colors.Colors;\r
  27 import org.simantics.ui.fonts.Fonts;\r
  28 import org.simantics.utils.threads.IThreadWorkQueue;\r
  29 import org.simantics.utils.threads.SWTThread;\r
  30 import org.simantics.views.ViewUtils.GridDataBean;\r
  31 \r
  32 abstract public class SingleSWTViewNode<T extends Control> extends SWTParentNode implements LoaderNode {\r
  33         \r
  34         private static final long serialVersionUID = -5810308021930769003L;\r
  35         \r
  36         private Map<String, Object> genericProperties = new HashMap<String, Object>();\r
  37         \r
  38         public Function2<String, Object, Boolean> propertyCallback;\r
  39         public GridDataBean layoutData;\r
  40         public int style;\r
  41         public String text;\r
  42         public RGB.Integer background;\r
  43         public RGB.Integer foreground;\r
  44         public Font font;\r
  45         protected transient ColorDescriptor backgroundDesc;\r
  46         protected transient ColorDescriptor foregroundDesc;\r
  47         protected transient FontDescriptor fontDesc;\r
  48 \r
  49         protected T control;\r
  50         \r
  51         @Override\r
  52         public Control getControl() {\r
  53                 return control;\r
  54         }\r
  55         \r
  56         @Override\r
  57         public void reset() {\r
  58                 control = null;\r
  59         }\r
  60 \r
  61         final protected boolean isDisposed() {\r
  62                 Control c = getControl();\r
  63                 return c == null ? false : c.isDisposed();\r
  64         }\r
  65 \r
  66         final protected void dispatch(final Runnable runnable) {\r
  67             if(isNodeDisposed()) return;\r
  68                 IThreadWorkQueue thread = SWTThread.getThreadAccess();\r
  69                 if(thread.currentThreadAccess()) runnable.run();\r
  70                 else thread.asyncExec(new Runnable() {\r
  71 \r
  72                         @Override\r
  73                         public void run() {\r
  74                                 if(isDisposed()) return;\r
  75                                 Control c = control;\r
  76                                 if(c == null || c.isDisposed()) return;\r
  77                                 runnable.run();\r
  78                         }\r
  79                         \r
  80                 });\r
  81         }\r
  82         \r
  83         private Field getPropertyField(String propertyName) {\r
  84                 assert(!isNodeDisposed());\r
  85                 return ScenegraphLoaderUtils.getPropertyField(this, propertyName);\r
  86         }\r
  87 \r
  88         private Class<?> getPropertyType(Field field) {\r
  89                 return field.getType();\r
  90         }\r
  91         \r
  92         private Binding getPropertyBinding(Field field) {\r
  93                 try {\r
  94                         Binding b = Bindings.getBinding( BindingRequest.create( field ) );\r
  95 \r
  96                         // Safety checks for unusable bindings.\r
  97                         if (b instanceof ArrayBinding && ((ArrayBinding) b).type().componentType() == null)\r
  98                                 return null;\r
  99 \r
 100                         return b;\r
 101                 } catch (BindingConstructionException e) {\r
 102                         return null;\r
 103                 } catch (Throwable t) {\r
 104                         return null;\r
 105                 }\r
 106         }\r
 107         \r
 108         /**\r
 109          * Convert binding to generic binding \r
 110          * @param binding\r
 111          * @return\r
 112          */\r
 113         private Binding getGenericPropertyBinding(Binding binding) {\r
 114                 if (binding == null) return null;\r
 115                 return Bindings.getBinding(binding.type());\r
 116         }\r
 117 \r
 118         @Override\r
 119         public Function1<Object, Boolean> getPropertyFunction(final String propertyName) {\r
 120 \r
 121             if(isNodeDisposed()) return null;\r
 122             \r
 123 //              assert(!isNodeDisposed());\r
 124 \r
 125                 final Field field = getPropertyField(propertyName);\r
 126                 if(field != null) {\r
 127 \r
 128                         return new FunctionImpl1<Object, Boolean>() {\r
 129 \r
 130                                 final Method method = ScenegraphLoaderUtils.getSynchronizeMethod(SingleSWTViewNode.this, propertyName);\r
 131                                 final Class<?> type = getPropertyType(field);\r
 132                                 final Binding binding = getPropertyBinding(field);\r
 133                                 final Binding genericBinding = getGenericPropertyBinding(binding);\r
 134 \r
 135                                 private Object setField(Object value) {\r
 136 \r
 137                                         try {\r
 138                                                 if(type.isPrimitive() || (value == null) || type.isInstance(value) || type.isArray()) {\r
 139                                                         field.set(SingleSWTViewNode.this, value);\r
 140                                                         return value;\r
 141                                                 } else {\r
 142                                                         Object instance = binding.createDefaultUnchecked();\r
 143                                                         binding.readFrom(genericBinding, value, instance);\r
 144                                                         field.set(SingleSWTViewNode.this, instance);\r
 145                                                         return instance;\r
 146                                                 }\r
 147                                         } catch (IllegalArgumentException e1) {\r
 148                                                 e1.printStackTrace();\r
 149                                         } catch (IllegalAccessException e1) {\r
 150                                                 e1.printStackTrace();\r
 151                                         } catch (BindingException e) {\r
 152                                                 e.printStackTrace();\r
 153                                         } catch (Throwable t) {\r
 154                                                 t.printStackTrace();\r
 155                                         }\r
 156 \r
 157                                         return null;\r
 158 \r
 159                                 }\r
 160 \r
 161                                 @Override\r
 162                                 public Boolean apply(Object value) {\r
 163 \r
 164                                         if(isNodeDisposed()) return true;\r
 165 \r
 166                                         final Object translated = setField(value);\r
 167 \r
 168                                         if(method != null) {\r
 169                                                 dispatch(new Runnable() {\r
 170         \r
 171                                                         @Override\r
 172                                                         public void run() {\r
 173         \r
 174                                                                 try {\r
 175                                                                         method.invoke(SingleSWTViewNode.this, translated);\r
 176                                                                 } catch (IllegalArgumentException e) {\r
 177                                                                         e.printStackTrace();\r
 178                                                                 } catch (IllegalAccessException e) {\r
 179                                                                         e.printStackTrace();\r
 180                                                                 } catch (InvocationTargetException e) {\r
 181                                                                         e.getCause().printStackTrace();\r
 182                                                                 }\r
 183                                                         }\r
 184         \r
 185                                                 });\r
 186                                         }\r
 187                                         return isDisposed();\r
 188                                 }\r
 189 \r
 190                         };\r
 191 \r
 192                 } else {\r
 193 \r
 194                         return new FunctionImpl1<Object, Boolean>() {\r
 195 \r
 196                                 @Override\r
 197                                 public Boolean apply(Object p0) {\r
 198                                         assert(!isNodeDisposed());\r
 199                                         genericProperties.put(propertyName, p0);\r
 200                                         return isDisposed();\r
 201                                 }\r
 202 \r
 203                         };\r
 204 \r
 205                 }\r
 206 \r
 207         }\r
 208 \r
 209         @Override\r
 210         public void setPropertyCallback(Function2<String, Object, Boolean> callback) {\r
 211                 this.propertyCallback = callback;\r
 212         }\r
 213         \r
 214         @SuppressWarnings("unchecked")\r
 215         @Override\r
 216         public <T2> T2 getProperty(String propertyName) {\r
 217 \r
 218                 Method m = ScenegraphLoaderUtils.getReadMethod(this, propertyName);\r
 219                 if(m != null) {\r
 220 \r
 221                         try {\r
 222                                 return (T2)m.invoke(this);\r
 223                         } catch (IllegalArgumentException e) {\r
 224                                 throw new RuntimeException("Failed to get property '" + propertyName + "' for " + getClass().getName(), e);\r
 225                         } catch (IllegalAccessException e) {\r
 226                                 throw new RuntimeException("Failed to get property '" + propertyName + "' for " + getClass().getName(), e);\r
 227                         } catch (InvocationTargetException e) {\r
 228                                 throw new RuntimeException("Failed to get property '" + propertyName + "' for " + getClass().getName(), e.getCause());\r
 229                         }\r
 230                         \r
 231                 } else {\r
 232                         return (T2)genericProperties.get(propertyName);\r
 233                 }\r
 234                 \r
 235         }\r
 236         \r
 237         protected void setProperties() {\r
 238                 for(Method m : getClass().getMethods()) {\r
 239                         if(m.getName().startsWith("synchronize")) {\r
 240                                 String upperFieldName = m.getName().substring("synchronize".length());\r
 241                                 String fieldName = upperFieldName.substring(0,1).toLowerCase() + upperFieldName.substring(1);\r
 242                                 Field f = ScenegraphLoaderUtils.getPropertyField(this, fieldName);\r
 243                                 try {\r
 244                                         m.invoke(this, f.get(this));\r
 245                                 } catch (IllegalArgumentException e) {\r
 246                                         throw new RuntimeException("Failed to set property '" + fieldName + "' for " + getClass().getName(), e);\r
 247                                 } catch (IllegalAccessException e) {\r
 248                                         throw new RuntimeException("Failed to set property '" + fieldName + "' for " + getClass().getName(), e);\r
 249                                 } catch (InvocationTargetException e) {\r
 250                                         throw new RuntimeException("Failed to set property '" + fieldName + "' for " + getClass().getName(), e.getCause());\r
 251                                 }\r
 252                         }\r
 253                 }\r
 254         }\r
 255         \r
 256         public void synchronizeText(String text) {\r
 257         }\r
 258 \r
 259         final public void synchronizeFont(Font font) {\r
 260                 if (font == null && fontDesc == null)\r
 261                         return;\r
 262                 ResourceManager rm = getResourceManager();\r
 263                 FontDescriptor oldDesc = fontDesc;\r
 264                 if (font != null)\r
 265                         control.setFont( getResourceManager().createFont( fontDesc = Fonts.swt(font) ) );\r
 266                 if (oldDesc != null)\r
 267                         rm.destroy(oldDesc);\r
 268         }\r
 269         \r
 270         final public void synchronizeForeground(RGB.Integer foreground) {\r
 271                 if (foreground == null && foregroundDesc == null)\r
 272                         return;\r
 273                 ResourceManager rm = getResourceManager();\r
 274                 ColorDescriptor oldDesc = foregroundDesc;\r
 275                 if (foreground != null)\r
 276                         control.setForeground( getResourceManager().createColor( foregroundDesc = Colors.swt(foreground) ) );\r
 277                 if (oldDesc != null)\r
 278                         rm.destroy(oldDesc);\r
 279         }\r
 280 \r
 281         final public void synchronizeBackground(RGB.Integer background) {\r
 282                 if (background == null && backgroundDesc == null)\r
 283                         return;\r
 284                 ResourceManager rm = getResourceManager();\r
 285                 ColorDescriptor oldDesc = backgroundDesc;\r
 286                 if (background != null)\r
 287                         control.setBackground( getResourceManager().createColor( backgroundDesc = Colors.swt(background) ) );\r
 288                 if (oldDesc != null)\r
 289                         rm.destroy(oldDesc);\r
 290         }\r
 291 \r
 292         final public void synchronizeStyle(int style) {\r
 293         }\r
 294 \r
 295         final public void synchronizeLayoutData(GridDataBean layoutData) {\r
 296                 if(layoutData != null) control.setLayoutData(SWTViewUtils.toGridData(layoutData));\r
 297         }\r
 298         \r
 299 }\r