X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;ds=sidebyside;f=eclipse%2Fruntime%2Forg.argeo.eclipse.ui%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Feclipse%2Fui%2FTreeParent.java;h=26bdbe615135a0bd9a6b0a76ad6280623c07de84;hb=1d5afdce3e91054f07ddd3c98309c363b4cf1d46;hp=8989d69ad744c8af5b8f63c435f99637be524b53;hpb=477f38e7085ce32c6f09e062cac90f7ba8769698;p=lgpl%2Fargeo-commons.git

diff --git a/eclipse/runtime/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/TreeParent.java b/eclipse/runtime/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/TreeParent.java
index 8989d69ad..26bdbe615 100644
--- a/eclipse/runtime/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/TreeParent.java
+++ b/eclipse/runtime/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/TreeParent.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
+ * Copyright (C) 2007-2012 Mathieu Baudier
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,21 +13,24 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package org.argeo.eclipse.ui;
 
 import java.util.ArrayList;
 import java.util.List;
 
-public class TreeParent extends TreeObject {
+/** Parent / children semantic to be used for simple UI Tree structure */
+public class TreeParent {
+	private String name;
+	private TreeParent parent;
+
 	private List<Object> children;
 
-	private boolean loaded;
+	/** False until at least one child has been added, then true until cleared */
+	private boolean loaded = false;
 
 	public TreeParent(String name) {
-		super(name);
+		this.name = name;
 		children = new ArrayList<Object>();
-		loaded = false;
 	}
 
 	public synchronized void addChild(Object child) {
@@ -37,21 +40,49 @@ public class TreeParent extends TreeObject {
 			((TreeParent) child).setParent(this);
 	}
 
+	/**
+	 * Remove this child. The child is disposed.
+	 */
 	public synchronized void removeChild(Object child) {
 		children.remove(child);
-		if (child instanceof TreeParent)
-			((TreeParent) child).setParent(null);
+		if (child instanceof TreeParent) {
+			((TreeParent) child).dispose();
+		}
 	}
 
 	public synchronized void clearChildren() {
+		for (Object obj : children) {
+			if (obj instanceof TreeParent)
+				((TreeParent) obj).dispose();
+		}
 		loaded = false;
 		children.clear();
 	}
 
+	/**
+	 * If overridden, <code>super.dispose()</code> must be called, typically
+	 * after custom cleaning.
+	 */
+	public synchronized void dispose() {
+		clearChildren();
+		parent = null;
+		children = null;
+	}
+
 	public synchronized Object[] getChildren() {
 		return children.toArray(new Object[children.size()]);
 	}
 
+	@SuppressWarnings("unchecked")
+	public synchronized <T> List<T> getChildrenOfType(Class<T> clss) {
+		List<T> lst = new ArrayList<T>();
+		for (Object obj : children) {
+			if (clss.isAssignableFrom(obj.getClass()))
+				lst.add((T) obj);
+		}
+		return lst;
+	}
+
 	public synchronized boolean hasChildren() {
 		return children.size() > 0;
 	}
@@ -67,4 +98,35 @@ public class TreeParent extends TreeObject {
 	public synchronized Boolean isLoaded() {
 		return loaded;
 	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setParent(TreeParent parent) {
+		this.parent = parent;
+	}
+
+	public TreeParent getParent() {
+		return parent;
+	}
+
+	public String toString() {
+		return getName();
+	}
+
+	public int compareTo(TreeParent o) {
+		return name.compareTo(o.name);
+	}
+
+	@Override
+	public int hashCode() {
+		return name.hashCode();
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		return name.equals(obj.toString());
+	}
+
 }