diff options
Diffstat (limited to 'src/main/java/com/c2kernel/gui/DynamicTreeBuilder.java')
| -rw-r--r-- | src/main/java/com/c2kernel/gui/DynamicTreeBuilder.java | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/src/main/java/com/c2kernel/gui/DynamicTreeBuilder.java b/src/main/java/com/c2kernel/gui/DynamicTreeBuilder.java deleted file mode 100644 index 050a76a..0000000 --- a/src/main/java/com/c2kernel/gui/DynamicTreeBuilder.java +++ /dev/null @@ -1,183 +0,0 @@ -package com.c2kernel.gui;
-
-import javax.swing.ImageIcon;
-import javax.swing.JTree;
-import javax.swing.SwingUtilities;
-import javax.swing.tree.DefaultMutableTreeNode;
-import javax.swing.tree.DefaultTreeModel;
-
-import com.c2kernel.gui.data.Node;
-import com.c2kernel.gui.data.NodeItem;
-import com.c2kernel.gui.data.NodeSubscriber;
-import com.c2kernel.lookup.Path;
-import com.c2kernel.utils.Language;
-import com.c2kernel.utils.Logger;
-import com.c2kernel.utils.Resource;
-
-/**
- * Installed as the user object on a single child node of a new node known to be composite.
- * <p>Shows 'Loading . . .' when the branch is opened, but a TreeExpansionListener attempts to fire this thread off in the first child node.
- * <br>When started, this thread will retrieve all of the real child nodes and add them to its parent while removing itself (hopefully for garbage collection)
- *
- * @version $Revision: 1.24 $ $Date: 2004/12/15 12:12:06 $
- * @author $Author: abranson $
- */
-
-public class DynamicTreeBuilder implements NodeSubscriber {
- private DefaultTreeModel treeModel;
- private final DefaultMutableTreeNode parent;
- public short state = IDLE;
- public static final short IDLE = 0;
- public static final short LOADING = 1;
- public static final short PARTIAL = 2;
- public static final short FINISHED = 3;
- private final DefaultMutableTreeNode loading;
- private static ImageIcon loadIcon = Resource.findImage("loading.gif");
- private static ImageIcon pauseIcon = Resource.findImage("reload.gif");
-
- /**
- * The newly created DynamicTreeBuilder records its parent node - the one for which it will build child nodes for.
- * @param nodeClicked The Parent Tree Node that will be populated.
- * @see NodeItem
- * @see TreeDisplay*/
- public DynamicTreeBuilder(DefaultMutableTreeNode parent) {
- this.parent = parent;
- loading = new DefaultMutableTreeNode(this);
- }
-
- /**
- * Before the tree builder can execute, it needs to be given references to the tree and NodeFactory needed to create the new nodes.
- * @param myNodeFactory The NodeFactory that can be queried for new NodeItems.
- * @param parentTree The JTree in which this node is currently contained.
- */
- public void buildInfo(JTree parentTree) {
- this.treeModel = (DefaultTreeModel)parentTree.getModel();
- }
-
- public void start() {
- // find the clicked tree node
- Node parentNode = (Node)parent.getUserObject();
- Logger.msg(2, "DynamicTreeBuilder.start() - Filling in children of '"+parentNode.toString()+"'");
- if (state == IDLE)
- parentNode.subscribeNode(this);
- else
- parentNode.loadMore();
- state = LOADING;
- }
-
- /**
- * Used by the JTree to find the text representation of the node.
- */
- @Override
- public String toString() {
- switch (state) {
- case IDLE:
- return Language.translate("Initializing Tree Node Loader");
- case LOADING:
- return Language.translate("Loading . . .");
- case PARTIAL:
- return Language.translate("Double-click to load more");
- case FINISHED:
- return Language.translate("Done");
- default:
- return "";
- }
-
- }
-
- public ImageIcon getIcon() {
- if (state == LOADING)
- return loadIcon;
- else
- return pauseIcon;
- }
-
- public DefaultMutableTreeNode getTreeNode() {
- return loading;
- }
-
- @Override
- public void add(Node newNode) {
- Logger.msg(2, "DynamicTreeBuilder.add() - Received item for tree. Name: "+newNode);
-
- // have we inserted the node yet?
- SwingUtilities.invokeLater(new TreeAddThread(newNode));
- }
-
- class TreeAddThread implements Runnable {
- Node newNode;
- TreeAddThread(Node newNode) {
- this.newNode = newNode;
- }
- @Override
- public void run() {
- boolean inserted = false;
- DefaultMutableTreeNode newTreeNode = newNode.getTreeNode();
- // loop though all children unless we have done the insertion
- for (int i=0; i<parent.getChildCount() && !inserted; i++) {
- DefaultMutableTreeNode child = (DefaultMutableTreeNode)treeModel.getChild(parent, i);
- if (child == loading) continue; // skip loading node
-
- Node childNode = (Node)child.getUserObject();
- if (childNode.getName().equals(newNode.getName())) {
- // we already have this one, skip it
- inserted = true;
- break;
- }
- if (childNode.getName().compareTo(newNode.getName()) >= 0) {
- // if the next string is 'greater than' ours, insert the node before
- treeModel.insertNodeInto(newTreeNode, parent, i);
- inserted = true;
- break;
- }
-
- }
- // if we haven't inserted yet, it must go at the end.
-
- if (!inserted)
- treeModel.insertNodeInto(newTreeNode, parent, parent.getChildCount());
- }
-
- }
-
- class TreeRemoveThread implements Runnable {
- DefaultMutableTreeNode oldNode;
- TreeRemoveThread(DefaultMutableTreeNode oldNode) {
- this.oldNode = oldNode;
- }
-
- @Override
- public void run() {
- treeModel.removeNodeFromParent(oldNode);
- }
- }
-
- @Override
- public void end(boolean more) {
- if (more) {
- state = PARTIAL;
- }
- else {
- state = FINISHED;
- synchronized(treeModel) {
- if (loading.getParent() != null)
- SwingUtilities.invokeLater(new TreeRemoveThread(loading));
- }
- }
- }
-
- @Override
- public void remove(Path path) {
- synchronized (treeModel) {
- for (int i=0; i<parent.getChildCount(); i++) {
- DefaultMutableTreeNode child = (DefaultMutableTreeNode)treeModel.getChild(parent, i);
- if (!(child.getUserObject() instanceof Node)) continue;
- Node childNode = (Node)child.getUserObject();
- if (childNode.getPath().equals(path)) {
- SwingUtilities.invokeLater(new TreeRemoveThread(child));
- return;
- }
- }
- }
- }
-}
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