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Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

assets/webapps/sms.gaiamobile.org/shared/js/settings_url.js

@@ -0,0 +1,33 @@
+/* exported SettingsURL */
+'use strict';
+
+// This library helps with managing settings that can either send back
+// string uris or blobs that need to be turned into blob: uris.
+// Usage is as follows:
+//  var blobURL = new SettingsURL();
+//  element.src = blobURL.set(settingValue);
+
+function SettingsURL() {
+  this._url = null;
+  this._isBlob = false;
+}
+
+SettingsURL.prototype = {
+  set: function(value) {
+    if (this._isBlob) {
+      window.URL.revokeObjectURL(this._url);
+    }
+    if (value instanceof Blob) {
+      this._isBlob = true;
+      this._url = window.URL.createObjectURL(value);
+    } else {
+      this._isBlob = false;
+      this._url = value;
+    }
+    return this._url;
+  },
+
+  get: function() {
+    return this._url;
+  }
+};