diff options
Diffstat (limited to 'plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/providers/UMLEditPartProvider.java')
| -rw-r--r-- | plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/providers/UMLEditPartProvider.java | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/providers/UMLEditPartProvider.java b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/providers/UMLEditPartProvider.java new file mode 100644 index 00000000000..3f83f5cf79d --- /dev/null +++ b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/providers/UMLEditPartProvider.java @@ -0,0 +1,153 @@ +/*****************************************************************************
+ * Copyright (c) 2010 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:
+ * Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
+ */
+package org.eclipse.papyrus.diagram.clazz.providers;
+
+import java.lang.ref.WeakReference;
+
+import org.eclipse.gef.EditPart;
+import org.eclipse.gef.EditPartFactory;
+import org.eclipse.gmf.runtime.common.core.service.IOperation;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.services.editpart.AbstractEditPartProvider;
+import org.eclipse.gmf.runtime.diagram.ui.services.editpart.CreateGraphicEditPartOperation;
+import org.eclipse.gmf.runtime.diagram.ui.services.editpart.IEditPartOperation;
+import org.eclipse.gmf.runtime.notation.View;
+import org.eclipse.papyrus.diagram.clazz.edit.parts.ModelEditPart;
+import org.eclipse.papyrus.diagram.clazz.edit.parts.UMLEditPartFactory;
+import org.eclipse.papyrus.diagram.clazz.part.UMLVisualIDRegistry;
+
+/**
+ * @generated
+ */
+public class UMLEditPartProvider extends AbstractEditPartProvider {
+
+ /**
+ * @generated
+ */
+ private EditPartFactory factory;
+
+ /**
+ * @generated
+ */
+ private boolean allowCaching;
+
+ /**
+ * @generated
+ */
+ private WeakReference cachedPart;
+
+ /**
+ * @generated
+ */
+ private WeakReference cachedView;
+
+ /**
+ * @generated
+ */
+ public UMLEditPartProvider() {
+ setFactory(new UMLEditPartFactory());
+ setAllowCaching(true);
+ }
+
+ /**
+ * @generated
+ */
+ public final EditPartFactory getFactory() {
+ return factory;
+ }
+
+ /**
+ * @generated
+ */
+ protected void setFactory(EditPartFactory factory) {
+ this.factory = factory;
+ }
+
+ /**
+ * @generated
+ */
+ public final boolean isAllowCaching() {
+ return allowCaching;
+ }
+
+ /**
+ * @generated
+ */
+ protected synchronized void setAllowCaching(boolean allowCaching) {
+ this.allowCaching = allowCaching;
+ if(!allowCaching) {
+ cachedPart = null;
+ cachedView = null;
+ }
+ }
+
+ /**
+ * @generated
+ */
+ protected IGraphicalEditPart createEditPart(View view) {
+ EditPart part = factory.createEditPart(null, view);
+ if(part instanceof IGraphicalEditPart) {
+ return (IGraphicalEditPart)part;
+ }
+ return null;
+ }
+
+ /**
+ * @generated
+ */
+ protected IGraphicalEditPart getCachedPart(View view) {
+ if(cachedView != null && cachedView.get() == view) {
+ return (IGraphicalEditPart)cachedPart.get();
+ }
+ return null;
+ }
+
+ /**
+ * @generated
+ */
+ public synchronized IGraphicalEditPart createGraphicEditPart(View view) {
+ if(isAllowCaching()) {
+ IGraphicalEditPart part = getCachedPart(view);
+ cachedPart = null;
+ cachedView = null;
+ if(part != null) {
+ return part;
+ }
+ }
+ return createEditPart(view);
+ }
+
+ /**
+ * @generated
+ */
+ public synchronized boolean provides(IOperation operation) {
+ if(operation instanceof CreateGraphicEditPartOperation) {
+ View view = ((IEditPartOperation)operation).getView();
+ if(!ModelEditPart.MODEL_ID.equals(UMLVisualIDRegistry.getModelID(view))) {
+ return false;
+ }
+ if(isAllowCaching() && getCachedPart(view) != null) {
+ return true;
+ }
+ IGraphicalEditPart part = createEditPart(view);
+ if(part != null) {
+ if(isAllowCaching()) {
+ cachedPart = new WeakReference(part);
+ cachedView = new WeakReference(view);
+ }
+ return true;
+ }
+ }
+ return false;
+ }
+}
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