diff options
Diffstat (limited to 'plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/util/LegacyOwnerObservable.java')
| -rwxr-xr-x | plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/util/LegacyOwnerObservable.java | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/util/LegacyOwnerObservable.java b/plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/util/LegacyOwnerObservable.java new file mode 100755 index 00000000000..8b941318fae --- /dev/null +++ b/plugins/infra/gmfdiag/org.eclipse.papyrus.infra.gmfdiag.properties/src/org/eclipse/papyrus/infra/gmfdiag/properties/util/LegacyOwnerObservable.java @@ -0,0 +1,158 @@ +/*****************************************************************************
+ * Copyright (c) 2013 CEA LIST.
+ *
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Laurent Wouters laurent.wouters@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.infra.gmfdiag.properties.util;
+
+import org.eclipse.core.databinding.observable.ChangeEvent;
+import org.eclipse.core.databinding.observable.IChangeListener;
+import org.eclipse.core.databinding.observable.Realm;
+import org.eclipse.core.databinding.observable.value.AbstractObservableValue;
+import org.eclipse.core.databinding.observable.value.ValueDiff;
+import org.eclipse.emf.common.command.AbstractCommand;
+import org.eclipse.emf.common.command.Command;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.EReference;
+import org.eclipse.emf.ecore.EcorePackage;
+import org.eclipse.emf.edit.domain.EditingDomain;
+import org.eclipse.gmf.runtime.notation.Diagram;
+import org.eclipse.gmf.runtime.notation.NotationPackage;
+import org.eclipse.gmf.runtime.notation.Style;
+import org.eclipse.papyrus.infra.gmfdiag.common.utils.DiagramUtils;
+import org.eclipse.papyrus.infra.viewpoints.style.StylePackage;
+import org.eclipse.papyrus.uml.tools.databinding.PapyrusObservableValue;
+
+/**
+ * Represents the observable value of a diagram's owner in the case where the diagram does not yet have the viewpoints-compatible style for holding the value itself
+ * @author Laurent Wouters
+ */
+public class LegacyOwnerObservable extends AbstractObservableValue {
+
+ private EditingDomain domain;
+ private Diagram diagram;
+ private EReference reference;
+ private IChangeListener styleListener;
+ private IChangeListener valueListener;
+ private PapyrusObservableValue styleObservable;
+ private PapyrusObservableValue valueObservable;
+
+ /**
+ * Initializes the observables
+ * @param diagram The diagram to be observed
+ * @param domain The editing domain
+ */
+ public LegacyOwnerObservable(Diagram diagram, EReference feature, EditingDomain domain) {
+ super(Realm.getDefault());
+ this.domain = domain;
+ this.diagram = diagram;
+ this.reference = feature;
+ buildStyleListener();
+ this.styleObservable = new PapyrusObservableValue(diagram, NotationPackage.Literals.VIEW__STYLES, domain);
+ this.styleObservable.addChangeListener(styleListener);
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.core.databinding.observable.value.AbstractObservableValue#isStale()
+ */
+ public boolean isStale() {
+ return (valueListener != null);
+ }
+
+ /**
+ * Builds the listener for the styles property of the diagram
+ */
+ private void buildStyleListener() {
+ this.styleListener = new IChangeListener() {
+ public void handleChange(ChangeEvent event) {
+ if (valueListener != null)
+ return;
+ Style style = LegacyOwnerObservable.this.diagram.getStyle(StylePackage.Literals.PAPYRUS_VIEW_STYLE);
+ if (style != null)
+ buildValueListener(style);
+ }
+ };
+ }
+
+ /**
+ * Builds the listener for the EObjectValue property of the style
+ * @param style The style to be observed
+ */
+ private void buildValueListener(Style style) {
+ this.valueListener = new IChangeListener() {
+ public void handleChange(ChangeEvent event) {
+ fireValueChange(new ValueDiff() {
+ public Object getOldValue() { return null; }
+ public Object getNewValue() { return DiagramUtils.getOwner(diagram); }
+ });
+ }
+ };
+ valueObservable = new PapyrusObservableValue(style, reference, domain);
+ valueObservable.addChangeListener(valueListener);
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.core.databinding.observable.value.IObservableValue#getValueType()
+ */
+ public Object getValueType() {
+ return EcorePackage.Literals.EOBJECT;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.core.databinding.observable.value.AbstractObservableValue#doGetValue()
+ */
+ protected Object doGetValue() {
+ return DiagramUtils.getOwner(diagram);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see org.eclipse.core.databinding.observable.value.AbstractObservableValue#doSetValue(java.lang.Object)
+ */
+ protected void doSetValue(Object value) {
+ Command emfCommand = getCommand((EObject) value);
+ domain.getCommandStack().execute(emfCommand);
+ }
+
+ private Command getCommand(final EObject newValue) {
+ final EObject oldValue = DiagramUtils.getOwner(diagram);
+
+ return new AbstractCommand("Change diagram's owner") {
+ private boolean createStyle = true;
+
+ public void execute() {
+ Style style = diagram.getStyle(StylePackage.Literals.PAPYRUS_VIEW_STYLE);
+ createStyle = (style == null);
+ DiagramUtils.setOwner(diagram, newValue);
+ }
+
+ public void redo() {
+ DiagramUtils.setOwner(diagram, newValue);
+ }
+
+ @Override
+ public void undo() {
+ if (createStyle) {
+ Style style = diagram.getStyle(StylePackage.Literals.PAPYRUS_VIEW_STYLE);
+ diagram.getStyles().remove(style);
+ } else {
+ DiagramUtils.setOwner(diagram, oldValue);
+ }
+ }
+
+ @Override
+ public boolean prepare() {
+ return true;
+ }
+ };
+ }
+}
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