001: /*
002: * <copyright>
003: *
004: * Copyright 1997-2004 BBNT Solutions, LLC
005: * under sponsorship of the Defense Advanced Research Projects
006: * Agency (DARPA).
007: *
008: * You can redistribute this software and/or modify it under the
009: * terms of the Cougaar Open Source License as published on the
010: * Cougaar Open Source Website (www.cougaar.org).
011: *
012: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
013: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
014: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
015: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
016: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
017: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
018: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
019: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
020: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
021: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
022: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
023: *
024: * </copyright>
025: */
026:
027: package org.cougaar.mlm.debug.ui;
028:
029: import java.util.Enumeration;
030:
031: import org.cougaar.core.blackboard.IncrementalSubscription;
032: import org.cougaar.core.mts.MessageAddress;
033: import org.cougaar.planning.ldm.plan.Task;
034: import org.cougaar.util.UnaryPredicate;
035:
036: /** A tree for an expandable task collection.
037: */
038:
039: public class UITaskCollectionNode extends UITreeNode implements
040: UISubscriber {
041: private UIPlugin uiPlugin;
042: private String planName;
043: private boolean childrenLoaded = false;
044:
045: /** Creates a tree for the expandable task collection in
046: the specified cluster and for the specified plan by calling
047: the UITreeNode constructor.
048: Listens for changes to the expandable tasks in order to dynamically
049: update the tree.
050: @param uiPlugin this user interface plug in
051: @param planName name of plan for which to display tasks
052: @param clusterId cluster from which to obtain tasks
053: @exception UINoPlanException thrown when the plan does not exist
054: */
055:
056: public UITaskCollectionNode(UIPlugin uiPlugin, String planName,
057: MessageAddress clusterId) throws UINoPlanException {
058: super ();
059: this .uiPlugin = uiPlugin;
060: this .planName = planName;
061: super .setUserObject(uiPlugin.getPlan(planName));
062: }
063:
064: /** Has leaves which are the tasks.
065: @return true
066: */
067:
068: public boolean isLeaf() {
069: return false;
070: }
071:
072: /** Get this cluster's expandable tasks, which are all the input tasks,
073: which are all the tasks in the Tasks container.
074: */
075:
076: private static UnaryPredicate taskPredicate() {
077: return new UnaryPredicate() {
078: public boolean execute(Object o) {
079: return (o instanceof Task);
080: }
081: };
082: }
083:
084: /** Get the expandable tasks.
085: */
086:
087: // will allready be synced on childGuard
088: public void loadChildren() {
089: if (!childrenLoaded) {
090: System.out
091: .println("Entered subscription for expandable tasks.");
092: uiPlugin.subscribe(this , taskPredicate());
093: childrenLoaded = true;
094: }
095: }
096:
097: /** Display the plan name in the tree.
098: @return plan name
099: */
100:
101: public String toString() {
102: return planName;
103: }
104:
105: /** UISubscriber interface.
106: Notified when a task is added and update the tree.
107: */
108:
109: // shouldn't be synchronized!
110: public void subscriptionChanged(IncrementalSubscription container) {
111: boolean reload = false;
112: Enumeration added = container.getAddedList();
113: while (added.hasMoreElements()) {
114: Task task = (Task) added.nextElement();
115: UITaskNode node = new UITaskNode(task);
116: if (node != null) {
117: // System.out.println("Added: " + task.toString() + " at " +
118: // getChildCount());
119: treeModel.insertNodeInto(node, this , getChildCount());
120: reload = true;
121: }
122: }
123: if (reload)
124: treeModel.reload();
125: }
126:
127: }
|