1 files changed, 85 insertions, 0 deletions
diff --git a/plugins/infra/core/org.eclipse.papyrus.infra.core/src/org/eclipse/papyrus/infra/core/resource/TransactionalEditingDomainManager.java b/plugins/infra/core/org.eclipse.papyrus.infra.core/src/org/eclipse/papyrus/infra/core/resource/TransactionalEditingDomainManager.java
new file mode 100644
index 00000000000..93d2dba5ded
--- /dev/null
+++ b/plugins/infra/core/org.eclipse.papyrus.infra.core/src/org/eclipse/papyrus/infra/core/resource/TransactionalEditingDomainManager.java
@@ -0,0 +1,85 @@
+package org.eclipse.papyrus.infra.core.resource;
+
+import java.util.Collections;
+import java.util.LinkedList;
+
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.emf.ecore.resource.ResourceSet;
+import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
+import org.eclipse.emf.transaction.TransactionalEditingDomain;
+import org.eclipse.emf.transaction.impl.TransactionalEditingDomainImpl;
+import org.eclipse.emf.workspace.IResourceUndoContextPolicy;
+import org.eclipse.emf.workspace.WorkspaceEditingDomainFactory;
+import org.eclipse.papyrus.commands.CheckedOperationHistory;
+import org.eclipse.papyrus.commands.NotifyingWorkspaceCommandStack;
+
+public class TransactionalEditingDomainManager {
+
+	protected static final ITransactionalEditingDomainProvider[] orderedProvidersArray;
+
+	protected static class ProviderPriorityPair implements Comparable<ProviderPriorityPair> {
+
+		public ITransactionalEditingDomainProvider provider;
+		public int priority;
+
+		public int compareTo(ProviderPriorityPair o) {
+			if (o.priority > priority) {
+				return 1;
+			} else if (o.priority < priority) {
+				return -1;
+			} else {
+				return 0;
+			}
+		}
+	}
+
+	static {
+		IConfigurationElement[] configElements = Platform.getExtensionRegistry().getConfigurationElementsFor("org.eclipse.papyrus.infra.core", "transactionalEditingDomainProvider");
+
+		LinkedList<ProviderPriorityPair> providerPriorityPairs = new LinkedList<ProviderPriorityPair>();
+
+		for(IConfigurationElement elem : configElements) {
+			if ("transactionalEditingDomainProvider".equals(elem.getName())) {
+				try {
+					ProviderPriorityPair providerPriorityPair = new ProviderPriorityPair();
+					providerPriorityPair.provider = (ITransactionalEditingDomainProvider) elem.createExecutableExtension("class");
+					providerPriorityPair.priority = Integer.parseInt(elem.getAttribute("priority"));
+
+					providerPriorityPairs.add(providerPriorityPair);
+				} catch (Exception e) {
+				}
+			}
+		}
+
+		Collections.sort(providerPriorityPairs);
+
+		orderedProvidersArray = new ITransactionalEditingDomainProvider[providerPriorityPairs.size()];
+
+		for (int i = 0; i < orderedProvidersArray.length; i++) {
+			orderedProvidersArray[i] = providerPriorityPairs.get(i).provider;
+		}
+	}
+
+	public static TransactionalEditingDomain createTransactionalEditingDomain(ResourceSet resourceSet) {
+		for (ITransactionalEditingDomainProvider provider : orderedProvidersArray) {
+			TransactionalEditingDomain ed = provider.createTransactionalEditingDomain(resourceSet);
+			if (ed != null) {
+				return ed;
+			}
+		}
+		return createDefaultTransactionalEditingDomain(resourceSet);
+	}
+
+	public static TransactionalEditingDomain createDefaultTransactionalEditingDomain(ResourceSet resourceSet) {
+		NotifyingWorkspaceCommandStack stack = new NotifyingWorkspaceCommandStack(CheckedOperationHistory.getInstance());
+		stack.setResourceUndoContextPolicy(IResourceUndoContextPolicy.DEFAULT);
+
+		TransactionalEditingDomain result = new TransactionalEditingDomainImpl(
+				new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE), stack,	resourceSet);
+
+		WorkspaceEditingDomainFactory.INSTANCE.mapResourceSet(result);
+
+		return result;
+	}
+}