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34 package info.magnolia.rendering.template.assignment;
35
36 import info.magnolia.cms.core.MgnlNodeType;
37 import info.magnolia.cms.i18n.Messages;
38 import info.magnolia.cms.i18n.MessagesManager;
39 import info.magnolia.cms.security.PermissionUtil;
40 import info.magnolia.context.MgnlContext;
41 import info.magnolia.jcr.util.MetaDataUtil;
42 import info.magnolia.jcr.util.NodeUtil;
43 import info.magnolia.registry.RegistrationException;
44 import info.magnolia.rendering.template.TemplateAvailability;
45 import info.magnolia.rendering.template.TemplateDefinition;
46 import info.magnolia.rendering.template.registry.TemplateDefinitionRegistry;
47
48 import java.util.Collection;
49 import java.util.Collections;
50 import java.util.Map;
51 import java.util.TreeMap;
52
53 import javax.inject.Inject;
54 import javax.inject.Singleton;
55 import javax.jcr.Node;
56 import javax.jcr.RepositoryException;
57 import javax.jcr.Session;
58
59 import org.slf4j.Logger;
60 import org.slf4j.LoggerFactory;
61
62
63
64
65
66
67 @Singleton
68 public class MetaDataBasedTemplateDefinitionAssignment implements TemplateDefinitionAssignment {
69
70 private static final String DELETED_PAGE_TEMPLATE = "adminInterface:mgnlDeleted";
71
72 private static final Logger log = LoggerFactory.getLogger(MetaDataBasedTemplateDefinitionAssignment.class);
73
74 private TemplateDefinitionRegistry templateDefinitionRegistry;
75
76 @Inject
77 public MetaDataBasedTemplateDefinitionAssignment(TemplateDefinitionRegistry templateDefinitionRegistry) {
78 this.templateDefinitionRegistry = templateDefinitionRegistry;
79 }
80
81 @Override
82 public TemplateDefinition getAssignedTemplateDefinition(Node content) throws RegistrationException {
83 final String templateId = MetaDataUtil.getMetaData(content).getTemplate();
84 return templateDefinitionRegistry.getTemplateDefinition(templateId);
85 }
86
87
88
89
90 @Override
91 public TemplateDefinition getDefaultTemplate(Node content) {
92
93
94 TemplateDefinition parentTemplate = null;
95 try {
96 parentTemplate = getAssignedTemplateDefinition(content.getParent());
97 } catch (RepositoryException e) {
98 log.error("Failed to determine template assigned to parent of node: " + NodeUtil.getNodePathIfPossible(content), e);
99 } catch (RegistrationException e) {
100
101 }
102
103 if (parentTemplate != null && isAvailable(content, parentTemplate)) {
104 return parentTemplate;
105 }
106
107
108 Collection<TemplateDefinition> templates = getAvailableTemplates(content);
109 if (templates.isEmpty()) {
110 return null;
111 }
112
113 return templates.iterator().next();
114 }
115
116 @Override
117 public Collection<TemplateDefinition> getAvailableTemplates(Node content) {
118
119 try {
120 if (content != null && NodeUtil.hasMixin(content, MgnlNodeType.MIX_DELETED)) {
121 return Collections.singleton(templateDefinitionRegistry.getTemplateDefinition(DELETED_PAGE_TEMPLATE));
122 }
123 } catch (RepositoryException e) {
124 log.error("Failed to check node for deletion status.", e);
125 } catch (RegistrationException e) {
126 log.error("Deleted content template is not correctly registered.", e);
127 }
128 final Map<String, TemplateDefinition> availableTemplateDefinitions = new TreeMap<String, TemplateDefinition>();
129 final Collection<TemplateDefinition> templateDefinitions = templateDefinitionRegistry.getTemplateDefinitions();
130 for (TemplateDefinition templateDefinition : templateDefinitions) {
131 if (isTemplateAvailable(content, templateDefinition)) {
132 Messages messages = MessagesManager.getMessages(templateDefinition.getI18nBasename());
133 String key = messages.getWithDefault(templateDefinition.getTitle(), templateDefinition.getTitle());
134 availableTemplateDefinitions.put(key, templateDefinition);
135 }
136 }
137 return availableTemplateDefinitions.values();
138 }
139
140 protected boolean isTemplateAvailable(Node content, TemplateDefinition templateDefinition) {
141 return hasReadAccess(content) &&
142 isVisible(templateDefinition) &&
143 isAvailable(content, templateDefinition);
144 }
145
146 protected boolean isVisible(TemplateDefinition templateDefinition) {
147 return templateDefinition.getVisible() == null || templateDefinition.getVisible();
148 }
149
150 protected boolean isAvailable(Node content, TemplateDefinition templateDefinition) {
151 TemplateAvailability templateAvailability = templateDefinition.getTemplateAvailability();
152 return templateAvailability == null || templateAvailability.isAvailable(content, templateDefinition);
153 }
154
155 protected boolean hasReadAccess(Node content) {
156 try {
157
158
159 return PermissionUtil.isGranted(
160 MgnlContext.getJCRSession(content.getSession().getWorkspace().getName()),
161 content.getPath(),
162 Session.ACTION_READ);
163 } catch (RepositoryException e) {
164 return false;
165 }
166 }
167 }