1 /*
2 * Created on 07.mar.2003
3 *
4 * To change this generated comment go to
5 * Window>Preferences>Java>Code Generation>Code and Comments
6 */
7 package net.sf.panoptes.model.node;
8
9 import java.util.ArrayList;
10
11 import org.eclipse.swt.graphics.Image;
12
13 import net.sf.panoptes.model.component.Component;
14 import net.sf.panoptes.model.component.registry.ComponentName;
15 import net.sf.panoptes.model.component.registry.ComponentNotFoundException;
16 import net.sf.panoptes.model.component.registry.ComponentRegistry;
17
18 /***
19 * Instances of this class are placeholders or "shortcuts" for other components. They
20 * are used to enable a single component to be displayed and manipulated in several
21 * places in the hierarchy at the same time.
22 *
23 * @author dag@liodden.no
24 * @see net.sf.panoptes.model.component.IComponent
25 * @see net.sf.panoptes.model.node.Node
26 * @version 0.1
27 *
28 */
29 public class SymLinkNode extends Node {
30
31 private ComponentName componentName;
32 private ComponentRegistry componentRegistry;
33 private NodeDescriptor configDescriptor = null;
34 private Image icon = null;
35 private ArrayList configuratorScripts = new ArrayList();
36
37 /***
38 * Creates a new instance.
39 *
40 * @param componentRegistry the registry in which the component this instance is placeholder for lives
41 * @param componentName the <code>ComponentName</code> of the component
42 */
43 public SymLinkNode(ComponentRegistry componentRegistry, ComponentName componentName) {
44 this.componentRegistry = componentRegistry;
45 this.componentName = componentName;
46 }
47
48 public NodeDescriptor getConfigDescriptor() {
49 if (configDescriptor != null)
50 return configDescriptor;
51 else
52 try {
53 return componentRegistry.get(componentName).getComponent().getConfigDescriptor();
54 } catch (ComponentNotFoundException e) {
55 return new NodeDescriptor(
56 "(" + componentName.toString() + ")",
57 "Placeholder for " + componentName.toString() + " which isnt' registered at the moment.");
58 }
59 }
60
61 public Node[] getChildren() {
62 try {
63 return componentRegistry.get(componentName).getComponent().getChildren();
64 } catch (ComponentNotFoundException e) {
65 return new Component[0];
66 }
67 }
68
69 public Image getIcon() {
70 if (icon != null) return icon;
71 else
72 try {
73 return componentRegistry.get(componentName).getComponent().getIcon();
74 } catch (ComponentNotFoundException e) {
75 return Node.ICON_BROKEN_LINK;
76 }
77 }
78
79 public void setIcon(Image icon) {
80 this.icon = icon;
81 }
82
83 public Component dereference() throws ComponentNotFoundException {
84 return (Component) componentRegistry.get(componentName).getComponent();
85 }
86
87 /* (non-Javadoc)
88 * @see net.sf.panoptes.view.configurator.Node#acceptsChildren()
89 */
90 public boolean acceptsChildren() {
91 return false;
92 }
93
94 /***
95 * @param descriptor
96 */
97 public void setConfigDescriptor(NodeDescriptor configDescriptor) {
98 this.configDescriptor = configDescriptor;
99 }
100
101 public void addConfiguratorScript(String script) {
102 configuratorScripts.add(script);
103 }
104
105 /* (non-Javadoc)
106 * @see net.sf.panoptes.model.node.Node#getConfiguratorScripts()
107 */
108 public String[] getConfiguratorScripts() {
109 return (String[]) configuratorScripts.toArray(new String[configuratorScripts.size()]);
110 }
111
112 }
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