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1
10 package org.mmbase.bridge.jsp.taglib.tree;
11
12 import javax.servlet.jsp.JspTagException  ;
13
14 import org.mmbase.bridge.*;
15 import org.mmbase.storage.search.*;
16 import org.mmbase.bridge.jsp.taglib.containers.*;
17 import org.mmbase.bridge.jsp.taglib.util.*;
18 import org.mmbase.bridge.jsp.taglib.*;
19 import org.mmbase.bridge.util.*;
20 import org.mmbase.util.logging.*;
21
22
29 public class TreeContainerTag extends RelatedNodesContainerTag implements NodeQueryContainer, ContainerReferrer {
31 private static final Logger log = Logging.getLoggerInstance(TreeContainerTag.class);
32
33 protected Attribute maxDepth = Attribute.NULL;
34 protected Attribute container = Attribute.NULL;
35 private String jspVar;
36
37 public void setMaxdepth(String md) throws JspTagException {
38 maxDepth = getAttribute(md);
39 }
40 public void setContainer(String c) throws JspTagException {
41 container = getAttribute(c);
42 }
43
44 public void setJspvar(String jv) {
45 jspVar = jv;
46 }
47
48 protected GrowingTreeList tree;
49
50 public GrowingTreeList getTree() {
51 return tree;
52 }
53
54
55 public Query getQuery() {
56 return getNodeQuery();
57 }
58 public NodeQuery getNodeQuery() {
59 return tree.getTemplate();
60 }
61
62
66 static NodeQuery getStartQuery(ContextReferrerTag thisTag, Attribute containerAttribute, Attribute nodeAttribute) throws JspTagException {
67 NodeQuery query = null;
68 String container = containerAttribute.getString(thisTag);
69 String node = nodeAttribute.getString(thisTag);
70 if ("".equals(container) && "".equals(node)) {
71 log.debug("no node attribute, no container attribute, trying container first");
72 NodeQueryContainer c = (NodeQueryContainer) thisTag.findParentTag(NodeQueryContainer.class, null, false);
73 if (c != null) {
74 query = c.getNodeQuery();
75 }
76 } else if (! "".equals(container)) {
77 log.debug("container attribute, trying container");
78 NodeQueryContainer c = (NodeQueryContainer) thisTag.findParentTag(NodeQueryContainer.class, container, true);
79 if (c != null) {
80 query = c.getNodeQuery();
81 }
82 }
83 if (query == null) { log.debug("working as node-referrer");
85 NodeProvider np = (NodeProvider) thisTag.findParentTag(NodeProvider.class, "".equals(node) ? null : node, ! "".equals(node));
86 if (np == null) {
87 throw new TaglibException("No NodeQueryContainer nor a NodeProvider found in tree-tag");
88 } else {
89 query = Queries.createNodeQuery(np.getNodeVar());
90 }
91 }
92 return query;
93
94 }
95
96
97 void addBranch(NodeManager nodeManager, String r, String sd) {
98 tree.grow(nodeManager, r, sd);
99 }
100
101 public int doStartTag() throws JspTagException {
102
104 query = getStartQuery(this, container, parentNodeId);
105
106
107 if (nodeManager != Attribute.NULL) {
108 tree = new GrowingTreeList(query,
109 maxDepth.getInt(this, 5),
110 query.getCloud().getNodeManager(nodeManager.getString(this)),
111 role.getString(this),
112 searchDirs.getString(this));
113
114 if (path != Attribute.NULL) throw new JspTagException ("Should specify either 'type' or 'path' attributes on treecontainer");
115 } else {
116 tree = new GrowingTreeList(query, maxDepth.getInt(this, 5));
117 if (path != Attribute.NULL) {
118 Queries.addPath(tree.getTemplate(), (String ) path.getValue(this), (String ) searchDirs.getValue(this));
119
120 Step step = (Step) tree.getTemplate().getSteps().get(2);
122 if (query.getSteps().contains(step)) {
123 query.setNodeStep(step);
124 }
125 }
126 }
127 if (jspVar != null) {
128 pageContext.setAttribute(jspVar, tree);
129 }
130 return EVAL_BODY;
131 }
132
133 public int doAfterBody() throws JspTagException {
134 if (EVAL_BODY == EVAL_BODY_BUFFERED) {
135 try {
136 if (bodyContent != null) {
137 bodyContent.writeOut(bodyContent.getEnclosingWriter());
138 }
139 } catch (java.io.IOException ioe){
140 throw new JspTagException (ioe.toString());
141 }
142 }
143 return SKIP_BODY;
144 }
145 public int doEndTag() throws JspTagException {
146 tree = null;
147 return super.doEndTag();
148 }
149
150 }
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