private void init()

in taverna-renderers-impl/src/main/java/org/apache/taverna/renderers/impl/XMLTree.java [127:252]
101 lines of code
13 McCabe index (conditional complexity)

	private void init(Content content) {
		rootElement = (Element) content;
		/*
		 * Fix for platforms other than metal which can't otherwise cope with
		 * arbitrary size rows
		 */
		setRowHeight(0);
		getSelectionModel().setSelectionMode(SINGLE_TREE_SELECTION);
		setShowsRootHandles(true);
		setEditable(false);
		setModel(new DefaultTreeModel(createTreeNode(content)));
		setCellRenderer(new DefaultTreeCellRenderer() {
			@Override
			public Color getBackgroundNonSelectionColor() {
				return null;
			}

			@Override
			public Color getBackground() {
				return null;
			}

			@Override
			public Component getTreeCellRendererComponent(JTree tree,
					Object value, boolean sel, boolean expanded, boolean leaf,
					int row, boolean hasFocus) {
				super.getTreeCellRendererComponent(tree, value, sel, expanded,
						leaf, row, hasFocus);
				setOpaque(false);
				if (value instanceof XMLNode) {
					XMLNode node = (XMLNode) value;
					if (node.getUserObject() instanceof Element)
						renderElementNode((Element) node.getUserObject());
					else if (node.getUserObject() instanceof Text)
						renderTextNode((Text) node.getUserObject());
					// TODO what about other node types?
				}
				setBackground(new Color(0, 0, 0, 0));
				return this;
			}

			private void renderElementNode(Element element) {
				// setIcon(TavernaIcons.xmlNodeIcon);
				StringBuilder nameBuffer = new StringBuilder("<html>")
						.append(element.getQualifiedName());
				/*
				 * Bit of a quick and dirty hack here to try to ensure that the
				 * element namespace is shown. There appears no way to get the
				 * actual xmlns declarations that are part of an element through
				 * jdom. Also, please note, there's no namespace handling at all
				 * for attributes...
				 */
				if (element.getParent() instanceof Element) {
					Element parent = (Element) element.getParent();
					if (parent.getNamespace(element.getNamespacePrefix()) == null)
						nameBuffer
								.append(" <font color=\"purple\">xmlns:")
								.append(element.getNamespacePrefix())
								.append("</font>=\"<font color=\"green\">")
								.append(element.getNamespaceURI() + "</font>\"");
				} else
					nameBuffer.append(" <font color=\"purple\">xmlns:")
							.append(element.getNamespacePrefix())
							.append("</font>=\"<font color=\"green\">")
							.append(element.getNamespaceURI() + "</font>\"");

				String sep = "";
				for (Object a : element.getAttributes()) {
					Attribute attribute = (Attribute) a;
					String name = attribute.getName().trim();
					String value = attribute.getValue().trim();
					if (value != null && value.length() > 0) {
						// TODO xml-quote name and value
						nameBuffer.append(sep)
								.append(" <font color=\"purple\">")
								.append(name)
								.append("</font>=\"<font color=\"green\">")
								.append(value).append("</font>\"");
						sep = ",";
					}
				}

				nameBuffer.append("</html>");
				setText(nameBuffer.toString());
			}

			private void renderTextNode(Text text) {
				// setIcon(TavernaIcons.leafIcon);
				String name = text.getText();
				if (textSizeLimit > -1 && name.length() > textSizeLimit)
					name = name.substring(0, textSizeLimit) + "...";
				setText("<html><pre><font color=\"blue\">"
						+ name.replaceAll("<br>", "\n").replaceAll("<", "&lt;")
						+ "</font></pre></html>");
			}
		});
		setAllNodesExpanded();

		// Add a listener to present the 'save as text' option
		addMouseListener(new MouseAdapter() {
			@Override
			public void mousePressed(MouseEvent e) {
				if (e.isPopupTrigger())
					doEvent(e);
			}

			@Override
			public void mouseReleased(MouseEvent e) {
				if (e.isPopupTrigger())
					doEvent(e);
			}

			public void doEvent(MouseEvent e) {
				JPopupMenu menu = new JPopupMenu();
				JMenuItem item = new JMenuItem("Save as XML text");
				menu.add(item);
				item.addActionListener(new ActionListener() {
					@Override
					public void actionPerformed(ActionEvent ae) {
						saveTreeXML();
					}
				});
				menu.show(XMLTree.this, e.getX(), e.getY());
			}
		});
	}