added JavaResourceModel interface

1 files changed, 124 insertions, 0 deletions

diff --git a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/resource/java/JavaResourceModelImpl.java b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/resource/java/JavaResourceModelImpl.java
new file mode 100644
index 0000000000..69d10efebf
--- /dev/null
+++ b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/resource/java/JavaResourceModelImpl.java
@@ -0,0 +1,124 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2008 Oracle. 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:
+ *     Oracle - initial API and implementation
+ ******************************************************************************/
+package org.eclipse.jpt.core.internal.resource.java;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import org.eclipse.core.resources.IFile;
+import org.eclipse.jdt.core.ElementChangedEvent;
+import org.eclipse.jdt.core.IJavaElement;
+import org.eclipse.jdt.core.IJavaElementDelta;
+import org.eclipse.jpt.core.JpaAnnotationProvider;
+import org.eclipse.jpt.core.ResourceModelListener;
+import org.eclipse.jpt.core.internal.AbstractResourceModel;
+import org.eclipse.jpt.core.internal.utility.jdt.JDTTools;
+import org.eclipse.jpt.core.resource.java.JavaResourceModel;
+import org.eclipse.jpt.core.resource.java.JpaCompilationUnit;
+import org.eclipse.jpt.core.utility.jdt.AnnotationEditFormatter;
+import org.eclipse.jpt.utility.CommandExecutorProvider;
+import org.eclipse.jpt.utility.internal.BitTools;
+
+public class JavaResourceModelImpl
+	extends AbstractResourceModel
+	implements JavaResourceModel
+{
+	private final Collection<ResourceModelListener> resourceModelListeners;
+	
+	private final JpaCompilationUnit compilationUnitResource;
+	
+	
+	public JavaResourceModelImpl(
+			IFile file, JpaAnnotationProvider annotationProvider, 
+			CommandExecutorProvider modifySharedDocumentCommandExecutorProvider,
+			AnnotationEditFormatter annotationEditFormatter) {
+		super();
+		this.resourceModelListeners = new ArrayList<ResourceModelListener>();
+		this.compilationUnitResource = 
+			new JpaCompilationUnitImpl(file, annotationProvider, modifySharedDocumentCommandExecutorProvider, annotationEditFormatter, this);
+	}
+	
+	public String getResourceType() {
+		return JAVA_RESOURCE_TYPE;
+	}
+	
+	@Override
+	public JpaCompilationUnit getResource() {
+		return this.compilationUnitResource;
+	}
+	
+	public void addResourceModelChangeListener(ResourceModelListener listener) {
+		if (listener == null) {
+			throw new IllegalArgumentException("Listener cannot be null");
+		}
+		if (this.resourceModelListeners.contains(listener)) {
+			throw new IllegalArgumentException("Listener " + listener + " already added");		
+		}
+		this.resourceModelListeners.add(listener);
+	}
+	
+	public void removeResourceModelChangeListener(ResourceModelListener listener) {
+		if (!this.resourceModelListeners.contains(listener)) {
+			throw new IllegalArgumentException("Listener " + listener + " was never added");		
+		}
+		this.resourceModelListeners.add(listener);
+	}
+
+	public void resourceChanged() {
+		if (getResource() == null) {
+			throw new IllegalStateException("Change events should not be fired during construction");
+		}
+		for (ResourceModelListener listener : this.resourceModelListeners) {
+			listener.resourceModelChanged();
+		}
+	}
+	
+	public void javaElementChanged(ElementChangedEvent event) {
+		synchWithJavaDelta(event.getDelta());
+	}
+	
+	private void synchWithJavaDelta(IJavaElementDelta delta) {
+		switch (delta.getElement().getElementType()) {
+			case IJavaElement.JAVA_MODEL :
+			case IJavaElement.JAVA_PROJECT :
+			case IJavaElement.PACKAGE_FRAGMENT_ROOT :
+			case IJavaElement.PACKAGE_FRAGMENT :
+				this.synchChildrenWithJavaDelta(delta);
+				break;
+			case IJavaElement.COMPILATION_UNIT :
+				this.synchCompilationUnitWithJavaDelta(delta);
+				break;
+			default :
+				break; // the event is somehow lower than a compilation unit
+		}
+	}
+
+	private void synchChildrenWithJavaDelta(IJavaElementDelta delta) {
+		for (IJavaElementDelta child : delta.getAffectedChildren()) {
+			this.synchWithJavaDelta(child); // recurse
+		}
+	}
+
+	private void synchCompilationUnitWithJavaDelta(IJavaElementDelta delta) {
+		// ignore changes to/from primary working copy - no content has changed;
+		// and make sure there are no other flags set that indicate both a change to/from
+		// primary working copy AND content has changed
+		if (BitTools.onlyFlagIsSet(delta.getFlags(), IJavaElementDelta.F_PRIMARY_WORKING_COPY)) {
+			return;
+		}
+		if (delta.getElement().equals(this.compilationUnitResource.getCompilationUnit())) {
+			//TODO possibly hop on the UI thread here so that we know only 1 thread is changing our model
+			this.compilationUnitResource.updateFromJava(JDTTools.buildASTRoot(this.compilationUnitResource.getCompilationUnit()));
+		}
+	}
+
+	public void resolveTypes() {
+		this.compilationUnitResource.resolveTypes(JDTTools.buildASTRoot(this.compilationUnitResource.getCompilationUnit()));
+	}
+}