FEATURE: Freemind representation of a viewpoint.

Part of feature #3.

lib/hypertopic.js

@@ -24,6 +24,8 @@ exports.Viewpoint = function(o) {
     }
   }
 
+  var util = require("lib/util");
+
   this.addRow = function(key, value) {
     var subject = key[key.length-1];
     var predicate = Object.keys(value)[0];
@@ -79,6 +81,33 @@ exports.Viewpoint = function(o) {
     send("</ul>");
     send("</section>");
   }
+
+  this.sendFreemindNode = function(id) {
+    var node = this.data.topics[id];
+    send('<node TEXT="' + util.xmlencode(node.name)
+      + '" ID="' + id + '">');
+    for each (var child in node.narrower) {
+      this.sendFreemindNode(child.id);
+    }
+    send('</node>');
+  }
+
+  this.sendFreemind = function() {
+    start({headers:{
+      "Content-Type": "application/x-freemind",
+      "Content-Disposition": "attachment; filename="
+        + this.data.viewpoint_name.replace(/[ ,]/g, "_") + ".mm;"
+    }});
+    send('<map version="1.0.0">');
+    send('<!-- To be opened with http://freemind.sourceforge.net/ -->');
+    send('<node TEXT="' + util.xmlencode(this.data.viewpoint_name)
+      + '" ID="' + this.data._id + '">');
+    for each (var upper in this.data.upper) {
+      this.sendFreemindNode(upper.id);
+    }
+    send('</node>');
+    send('</map>');
+  }
 }
 
 exports.Item = function() {

lib/util.js

@@ -1,30 +1,3 @@
-exports.normalize = function(obj)
-{
-  if(!obj.rows) return obj;
-  var rows = obj.rows;
-  var result = {};
-  for(var i=0; i < rows.length; i++)
-  {
-    var r = rows[i];
-    var keys = r.key;
-    var current = result;
-    for(var k=0; k < keys.length; k++)
-    {
-      if(!current[keys[k]])
-        current[keys[k]] = {};
-      current = current[keys[k]];
-    }
-    var value = r.value;
-    for(var attribute in value)
-    {
-      if(!current[attribute])
-        current[attribute] = [];
-      current[attribute].push(value[attribute]);
-    }
-  }
-  return result;
-}
-
 exports.sendView = function() {
   send('{"rows":[');
   var row = getRow();
@@ -35,3 +8,14 @@ exports.sendView = function() {
   }
   send(']}');
 }
+
+exports.xmlencode = function(data) {
+  switch (typeof data) {
+    case "object":
+      data = data[0];
+    case "string":
+      data = data.replace(/\&/g,'&'+'amp;').replace(/</g,'&'+'lt;');
+  }
+  return data;
+}
+

lists/topicV1.js

@@ -1,4 +1,6 @@
 function(head, req) {
+  var util = require("lib/util");
+
   start({
       "headers": {
         "Content-Type": "text/xml"
@@ -13,10 +15,6 @@ function(head, req) {
     return result;
   }
 
-  function xmlencode(string) {
-    return string.replace(/\&/g,'&'+'amp;').replace(/</g,'&'+'lt;');
-  }
-
   var name;
   var broader = [];
   var narrower = [];
@@ -57,7 +55,7 @@ function(head, req) {
   for each (h in highlights) {
     send('<entity href="../../../entity/'+h.corpus+"/"+h.item+"/");
     send(format(h.coordinates)+'">');
-    send(xmlencode(h.text));
+    send(util.xmlencode(h.text));
     send('</entity>\n');
   }
   send('</topic>\n');

lists/viewpoint.js

@@ -8,6 +8,18 @@ function (head, req) {
     while (row = getRow()) {
       viewpoint.addRow(row.key, row.value);
     }
-    viewpoint.sendHTML();
+    if (req.query.download) {
+      viewpoint.sendFreemind();
+    } else {
+      viewpoint.sendHTML();
+    }
+  });
+
+  registerType("freemind", "application/x-freemind");
+  provides("freemind", function() {
+    while (row = getRow()) {
+      viewpoint.addRow(row.key, row.value);
+    }
+    viewpoint.sendFreemind();
   });
 }

shows/itemV1.js

@@ -1,8 +1,5 @@
 function(o, req) {
-
-  function xmlencode(string) {
-    return string.replace(/\&/g,'&'+'amp;').replace(/</g,'&'+'lt;');
-  }
+  var util = require("lib/util");
 
   send('<entity>\n');
   for (var key in o) {
@@ -20,7 +17,7 @@ function(o, req) {
           break;
         case 'resource':
           send('<resource name="source" href="');
-          send(xmlencode(o.resource));
+          send(util.xmlencode(o.resource));
           send('"/>\n');
           if (o.resource.indexOf('picture')>=0) {
             send('<resource name="thumbnail" href="');