diff options
Diffstat (limited to 'plugins/uml/properties/org.eclipse.papyrus.uml.properties/src/org/eclipse/papyrus/uml/properties/databinding/StereotypeAppearanceObservableValue.java')
| -rw-r--r-- | plugins/uml/properties/org.eclipse.papyrus.uml.properties/src/org/eclipse/papyrus/uml/properties/databinding/StereotypeAppearanceObservableValue.java | 85 |
1 files changed, 78 insertions, 7 deletions
diff --git a/plugins/uml/properties/org.eclipse.papyrus.uml.properties/src/org/eclipse/papyrus/uml/properties/databinding/StereotypeAppearanceObservableValue.java b/plugins/uml/properties/org.eclipse.papyrus.uml.properties/src/org/eclipse/papyrus/uml/properties/databinding/StereotypeAppearanceObservableValue.java index 76d47f59542..ce3d31856d4 100644 --- a/plugins/uml/properties/org.eclipse.papyrus.uml.properties/src/org/eclipse/papyrus/uml/properties/databinding/StereotypeAppearanceObservableValue.java +++ b/plugins/uml/properties/org.eclipse.papyrus.uml.properties/src/org/eclipse/papyrus/uml/properties/databinding/StereotypeAppearanceObservableValue.java @@ -21,7 +21,12 @@ import static org.eclipse.papyrus.uml.properties.util.StereotypeAppearanceConsta import static org.eclipse.papyrus.uml.properties.util.StereotypeAppearanceConstants.TEXT_AND_ICON;
import static org.eclipse.papyrus.uml.properties.util.StereotypeAppearanceConstants.VERTICAL;
+import org.eclipse.core.databinding.observable.Diffs;
import org.eclipse.core.databinding.observable.value.AbstractObservableValue;
+import org.eclipse.core.internal.databinding.Util;
+import org.eclipse.emf.common.notify.Adapter;
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.ecore.EModelElement;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.transaction.RecordingCommand;
@@ -62,6 +67,16 @@ public class StereotypeAppearanceObservableValue extends AbstractObservableValue protected TransactionalEditingDomain domain;
/**
+ * Try to synchronize annotation value from model.
+ */
+ private Adapter diagramElementListener;
+
+ /**
+ * Cached set value, and fire an event if this value changed.
+ */
+ private String cachedValue;
+
+ /**
*
* Constructor.
*
@@ -80,6 +95,34 @@ public class StereotypeAppearanceObservableValue extends AbstractObservableValue this.diagramElement = diagramElement;
this.element = element;
this.domain = (TransactionalEditingDomain)domain;
+ if(diagramElement != null) {
+ diagramElement.eAdapters().add(getDiagramElementListener());
+ }
+ }
+
+ /**
+ * Create a listener for DiagramElement.
+ */
+ private Adapter getDiagramElementListener() {
+ if(diagramElementListener == null) {
+ diagramElementListener = new AdapterImpl() {
+
+ @Override
+ public void notifyChanged(Notification msg) {
+ if(!msg.isTouch()) {
+ handleStereotypeChanged(msg);
+ }
+ }
+ };
+ }
+ return diagramElementListener;
+ }
+
+ /**
+ * Synchronize value from model. So that, the binded UI would be updated.
+ */
+ protected void handleStereotypeChanged(Notification msg) {
+ setValue(doGetValue());
}
public Object getValueType() {
@@ -150,18 +193,34 @@ public class StereotypeAppearanceObservableValue extends AbstractObservableValue }
}
+ @SuppressWarnings("restriction")
@Override
protected void doSetValue(Object value) {
if(value instanceof String) {
+ String oldValue = cachedValue;
String stringValue = (String)value;
-
- if(propertyPath.equals(STEREOTYPE_DISPLAY)) { //Edition of the stereotypeDisplay property
- setStereotypeDisplayValue(stringValue);
- } else if(propertyPath.equals(TEXT_ALIGNMENT)) { //Edition of the textAlignment property
- setTextAlignmentValue(stringValue);
- } else if(propertyPath.equals(DISPLAY_PLACE)) { //Edition of the displayPlace property
- setDisplayPlaceValue(stringValue);
+ if(diagramElement != null) {
+ diagramElement.eAdapters().remove(diagramElementListener);
+ }
+ String currentValue = doGetValue();
+ //Update model with if the real value changed.
+ if(!Util.equals(currentValue, stringValue)) {
+ if(propertyPath.equals(STEREOTYPE_DISPLAY)) { //Edition of the stereotypeDisplay property
+ setStereotypeDisplayValue(stringValue);
+ } else if(propertyPath.equals(TEXT_ALIGNMENT)) { //Edition of the textAlignment property
+ setTextAlignmentValue(stringValue);
+ } else if(propertyPath.equals(DISPLAY_PLACE)) { //Edition of the displayPlace property
+ setDisplayPlaceValue(stringValue);
+ }
+ }
+ //Send an event if value changed. We should use the cached value since it was binded with others, and the real value can be changed externally(such as UNDO/REDO).
+ if(!Util.equals(oldValue, stringValue) && hasListeners()) {
+ fireValueChange(Diffs.createValueDiff(oldValue, stringValue));
+ }
+ if(diagramElement != null) {
+ diagramElement.eAdapters().add(getDiagramElementListener());
}
+ cachedValue = stringValue;
} else {
Activator.log.warn("The value " + value + " is invalid for property " + propertyPath); //$NON-NLS-1$ //$NON-NLS-2$
}
@@ -211,4 +270,16 @@ public class StereotypeAppearanceObservableValue extends AbstractObservableValue domain.getCommandStack().execute(command);
}
+ /**
+ * @see org.eclipse.core.databinding.observable.AbstractObservable#dispose()
+ *
+ */
+
+ @Override
+ public synchronized void dispose() {
+ if(diagramElement != null && diagramElementListener != null) {
+ diagramElement.eAdapters().remove(diagramElementListener);
+ }
+ super.dispose();
+ }
}
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