initial quantum version

[phpeclipse.git] / archive / net.sourceforge.phpeclipse.quantum.sql / src / com / quantum / view / bookmark / BookmarkListNode.java

diff --git a/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/view/bookmark/BookmarkListNode.java b/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/view/bookmark/BookmarkListNode.java
new file mode 100644 (file)
index 0000000..37adfc6
--- /dev/null
+++ b/archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/view/bookmark/BookmarkListNode.java
@@ -0,0 +1,120 @@
+package com.quantum.view.bookmark;
+
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyChangeSupport;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.Map;
+
+import com.quantum.model.Bookmark;
+import com.quantum.model.BookmarkCollection;
+
+
+/**
+ * @author root
+ */
+public final class BookmarkListNode extends TreeNode implements PropertyChangeListener {
+    final static BookmarkListNode instance = new BookmarkListNode();
+       final static TreeNode[] EMPTY_ARRAY = new TreeNode[0];
+    private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);
+    private boolean initialized = false;
+   
+    private BookmarkListNode() {
+        super(null);
+    }
+    
+    public static BookmarkListNode getInstance() {
+        return BookmarkListNode.instance;
+    }
+    
+       /**
+        * @see com.quantum.view.bookmark.TreeNode#getChildren()
+        */
+       public Object[] getChildren() {
+        if (!initialized) {
+            initializeChildren();
+            BookmarkCollection.getInstance().addPropertyChangeListener(this);
+        }
+        BookmarkNode[] nodes = (BookmarkNode[]) this.children.toArray(
+            new BookmarkNode[this.children.size()]);
+        Arrays.sort(nodes);
+        return nodes;
+       }
+
+       /**
+        * @see com.quantum.view.bookmark.TreeNode#hasChildren()
+        */
+       public boolean hasChildren() {
+               return true;
+       }
+       
+       public String getName() {
+               return "ROOT"; //$NON-NLS-1$
+       }
+    protected String getImageName() {
+        return null;
+    }
+    /**
+     * @param listener
+     */
+    public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
+        this.propertyChangeSupport.addPropertyChangeListener(listener);
+    }
+
+    /**
+     * @param listener
+     */
+    public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
+        this.propertyChangeSupport.removePropertyChangeListener(listener);
+    }
+    protected void firePropertyChange(PropertyChangeEvent event) {
+        this.propertyChangeSupport.firePropertyChange(event);
+    }
+
+    protected synchronized void initializeChildren() {
+        boolean changed = false;
+        Map temp = new Hashtable();
+        for (Iterator i = this.children.iterator(); i.hasNext();) {
+            BookmarkNode bookmark = (BookmarkNode) i.next();
+            temp.put(bookmark.getName(), bookmark);
+        }
+        
+        this.children.clear();
+        
+        Bookmark[] bookmarks = BookmarkCollection.getInstance().getBookmarks();
+        for (int i = 0, length = (bookmarks == null) ? 0 : bookmarks.length; i < length; i++) {
+            
+            BookmarkNode node = (BookmarkNode) temp.remove(bookmarks[i].getName());
+            if (node == null) {
+                this.children.add(new BookmarkNode(this, bookmarks[i]));
+                changed = true;
+            } else {
+                this.children.add(node);
+            }
+        }
+
+        for (Iterator i = temp.values().iterator(); i.hasNext(); ) {
+            ((TreeNode) i.next()).dispose();
+            changed = true;
+        }
+
+        Collections.sort(this.children);
+        this.initialized = true;
+        
+        if (changed) {
+            firePropertyChange("bookmarks", null, null);
+        }
+    }
+
+    /**
+     * @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
+     */
+    public void propertyChange(PropertyChangeEvent event) {
+        if ("bookmarks".equals(event.getPropertyName())) {
+            initializeChildren();
+        }
+    }
+}