X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.message.ui%2Fsrc%2Forg%2Fsimantics%2Fmessage%2Fui%2FAbstractEntry.java;fp=bundles%2Forg.simantics.message.ui%2Fsrc%2Forg%2Fsimantics%2Fmessage%2Fui%2FAbstractEntry.java;h=3a94a0ecc3df516aa90ba8e0f00d3c4986710403;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.message.ui/src/org/simantics/message/ui/AbstractEntry.java b/bundles/org.simantics.message.ui/src/org/simantics/message/ui/AbstractEntry.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * 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:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.message.ui;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.eclipse.core.runtime.PlatformObject;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.ui.model.IWorkbenchAdapter;
+
+/**
+ * Everything that appears in LogView is Abstract Entry. It provides composite pattern.
+ */
+public abstract class AbstractEntry extends PlatformObject implements IWorkbenchAdapter {
+
+	/**
+	 * The collection of direct children of this entry
+	 */
+	private List<Object> children = new ArrayList<Object>();
+	protected Object parent;
+
+	/**
+	 * Adds the specified child entry to the listing of children.
+	 * If the specified child is <code>null</code>, no work is done
+	 * 
+	 * @param child
+	 */
+	public void addChild(AbstractEntry child) {
+		if (child != null) {
+			children.add(0, child);
+			child.setParent(this);
+		}
+	}
+
+	/**
+	 * @see IWorkbenchAdapter#getChildren(Object)
+	 */
+	public Object[] getChildren(Object parent) {
+		return children.toArray();
+	}
+
+	/**
+	 * @return true if this entry has children, false otherwise
+	 */
+	public boolean hasChildren() {
+		return children.size() > 0;
+	}
+
+	/**
+	 * @return the size of the child array
+	 * 
+	 * TODO rename to getChildCount(), or something more meaningful
+	 */
+	public int size() {
+		return children.size();
+	}
+
+	/**
+	 * @see IWorkbenchAdapter#getImageDescriptor(Object)
+	 */
+	public ImageDescriptor getImageDescriptor(Object object) {
+		return null;
+	}
+
+	/**
+	 * @see IWorkbenchAdapter#getLabel(Object)
+	 */
+	public String getLabel(Object o) {
+		return null;
+	}
+
+	/**
+	 * @see IWorkbenchAdapter#getParent(Object)
+	 */
+	public Object getParent(Object o) {
+		return parent;
+	}
+
+	/**
+	 * Sets the parent of this entry
+	 * @param parent
+	 */
+	public void setParent(AbstractEntry parent) {
+		this.parent = parent;
+	}
+
+	/**
+	 * removes all of the children specified in the given listing
+	 * 
+	 * @param list the list of children to remove
+	 */
+	public void removeChildren(List<?> list) {
+		children.removeAll(list);
+	}
+
+	/**
+	 * Removes all of the children from this entry
+	 */
+	public void removeAllChildren() {
+		children.clear();
+	}
+
+	/**
+	 * Writes this entry information into the given {@link PrintWriter}
+	 * 
+	 * @param writer
+	 */
+	public abstract void write(PrintWriter writer);
+}