1 files changed, 93 insertions, 0 deletions
diff --git a/mailnews/db/gloda/modules/noun_freetag.js b/mailnews/db/gloda/modules/noun_freetag.js
new file mode 100644
index 000000000..8c92d53ae
--- /dev/null
+++ b/mailnews/db/gloda/modules/noun_freetag.js
@@ -0,0 +1,93 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+this.EXPORTED_SYMBOLS = ['FreeTag', 'FreeTagNoun'];
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cr = Components.results;
+var Cu = Components.utils;
+
+Cu.import("resource:///modules/gloda/log4moz.js");
+
+Cu.import("resource:///modules/gloda/gloda.js");
+
+function FreeTag(aTagName) {
+  this.name = aTagName;
+}
+
+FreeTag.prototype = {
+  toString: function () {
+    return this.name;
+  }
+};
+
+/**
+ * @namespace Tag noun provider.  Since the tag unique value is stored as a
+ *  parameter, we are an odd case and semantically confused.
+ */
+var FreeTagNoun = {
+  _log: Log4Moz.repository.getLogger("gloda.noun.freetag"),
+
+  name: "freetag",
+  clazz: FreeTag,
+  allowsArbitraryAttrs: false,
+  usesParameter: true,
+
+  _listeners: [],
+  addListener: function(aListener) {
+    this._listeners.push(aListener);
+  },
+  removeListener: function(aListener) {
+    let index = this._listeners.indexOf(aListener);
+    if (index >=0)
+      this._listeners.splice(index, 1);
+  },
+
+  populateKnownFreeTags: function() {
+    for (let attr of this.objectNounOfAttributes) {
+      let attrDB = attr.dbDef;
+      for (let param in attrDB.parameterBindings) {
+        this.getFreeTag(param);
+      }
+    }
+  },
+
+  knownFreeTags: {},
+  getFreeTag: function(aTagName) {
+    let tag = this.knownFreeTags[aTagName];
+    if (!tag) {
+      tag = this.knownFreeTags[aTagName] = new FreeTag(aTagName);
+      for (let listener of this._listeners)
+        listener.onFreeTagAdded(tag);
+    }
+    return tag;
+  },
+
+  comparator: function gloda_noun_freetag_comparator(a, b) {
+    if (a == null) {
+      if (b == null)
+        return 0;
+      else
+        return 1;
+    }
+    else if (b == null) {
+      return -1;
+    }
+    return a.name.localeCompare(b.name);
+  },
+
+  toParamAndValue: function gloda_noun_freetag_toParamAndValue(aTag) {
+    return [aTag.name, null];
+  },
+
+  toJSON: function gloda_noun_freetag_toJSON(aTag) {
+    return aTag.name;
+  },
+  fromJSON: function gloda_noun_freetag_fromJSON(aTagName) {
+    return this.getFreeTag(aTagName);
+  },
+};
+
+Gloda.defineNoun(FreeTagNoun);