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1
11 package org.eclipse.ui.internal.intro;
12
13 import java.util.ArrayList  ;
14
15 import org.eclipse.core.runtime.CoreException;
16 import org.eclipse.core.runtime.IConfigurationElement;
17 import org.eclipse.core.runtime.IExtension;
18 import org.eclipse.core.runtime.IExtensionPoint;
19 import org.eclipse.core.runtime.IStatus;
20 import org.eclipse.core.runtime.Platform;
21 import org.eclipse.core.runtime.Status;
22 import org.eclipse.ui.PlatformUI;
23 import org.eclipse.ui.internal.WorkbenchPlugin;
24 import org.eclipse.ui.internal.registry.IWorkbenchRegistryConstants;
25 import org.eclipse.ui.internal.registry.RegistryReader;
26
27
32 public class IntroRegistry implements IIntroRegistry {
33 private static final String TAG_INTRO = "intro";
35 private static final String TAG_INTROPRODUCTBINDING = "introProductBinding";
37 private static final String ATT_INTROID = "introId";
39 private static final String ATT_PRODUCTID = "productId";
41
46 public int getIntroCount() {
47 return getIntros().length;
48 }
49
50
55 public IIntroDescriptor[] getIntros() {
56 IExtensionPoint point = Platform.getExtensionRegistry()
57 .getExtensionPoint(PlatformUI.PLUGIN_ID,
58 IWorkbenchRegistryConstants.PL_INTRO);
59 if (point == null) {
60 return new IIntroDescriptor[0];
61 }
62
63 IExtension[] extensions = point.getExtensions();
64 extensions = RegistryReader.orderExtensions(extensions);
65
66 ArrayList list = new ArrayList (extensions.length);
67 for (int i = 0; i < extensions.length; i++) {
68 IConfigurationElement[] elements = extensions[i]
69 .getConfigurationElements();
70 for (int j = 0; j < elements.length; j++) {
71 if (elements[j].getName().equals(TAG_INTRO)) {
72 try {
73 IIntroDescriptor descriptor = new IntroDescriptor(
74 elements[j]);
75 list.add(descriptor);
76 } catch (CoreException e) {
77 WorkbenchPlugin
79 .log(
80 IntroMessages.Intro_could_not_create_descriptor, e.getStatus());
81 }
82 }
83 }
84 }
85
86 return (IIntroDescriptor[]) list.toArray(new IIntroDescriptor[list
87 .size()]);
88 }
89
90
95 public IIntroDescriptor getIntroForProduct(String targetProductId) {
96 IExtensionPoint point = Platform.getExtensionRegistry()
97 .getExtensionPoint(PlatformUI.PLUGIN_ID,
98 IWorkbenchRegistryConstants.PL_INTRO);
99 if (point == null) {
100 return null;
101 }
102
103 IExtension[] extensions = point.getExtensions();
104 extensions = RegistryReader.orderExtensions(extensions);
105
106 String targetIntroId = getIntroForProduct(targetProductId, extensions);
107 if (targetIntroId == null) {
108 return null;
109 }
110
111 IIntroDescriptor descriptor = null;
112
113 IIntroDescriptor[] intros = getIntros();
114 for (int i = 0; i < intros.length; i++) {
115 if (intros[i].getId().equals(targetIntroId)) {
116 descriptor = intros[i];
117 break;
118 }
119 }
120
121 return descriptor;
122 }
123
124
129 private String getIntroForProduct(String targetProductId,
130 IExtension[] extensions) {
131 for (int i = 0; i < extensions.length; i++) {
132 IConfigurationElement[] elements = extensions[i]
133 .getConfigurationElements();
134 for (int j = 0; j < elements.length; j++) {
135 if (elements[j].getName().equals(TAG_INTROPRODUCTBINDING)) {
136 String introId = elements[j].getAttribute(ATT_INTROID);
137 String productId = elements[j].getAttribute(ATT_PRODUCTID);
138
139 if (introId == null || productId == null) {
140 IStatus status = new Status(
141 IStatus.ERROR,
142 elements[j].getDeclaringExtension()
143 .getNamespace(),
144 IStatus.ERROR,
145 "introId and productId must be defined.", new IllegalArgumentException ()); WorkbenchPlugin.log("Invalid intro binding", status); continue;
148 }
149
150 if (targetProductId.equals(productId)) {
151 return introId;
152 }
153 }
154 }
155 }
156 return null;
157 }
158
159
164 public IIntroDescriptor getIntro(String id) {
165 IIntroDescriptor[] intros = getIntros();
166 for (int i = 0; i < intros.length; i++) {
167 IIntroDescriptor desc = intros[i];
168 if (desc.getId().equals(id)) {
169 return desc;
170 }
171 }
172 return null;
173 }
174 }
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