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gaia/shared/js/smart-screen/bookmark_manager.js

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+/* global CardStore, evt */
+
+(function(exports) {
+  'use strict';
+
+  var BookmarkManager = evt({
+    TABLE_NAME: 'appdeck_bookmarks',
+
+    init: function bm_init(ownerURL, mode) {
+      this._store = new CardStore(this.TABLE_NAME, mode, ownerURL);
+      this._store.on('change', this.fire.bind(this, 'change'));
+    },
+
+    iterate: function bm_iterate(cb) {
+      return this._store.iterateData(cb);
+    },
+
+    add: function bm_add(entry, id) {
+      if (!id) {
+        id = entry.url;
+      }
+
+      entry.date = new Date();
+      if (entry.iconUrl) {
+        return this.fetchIcon(entry.iconUrl).then(iconData => {
+          entry.icon = iconData;
+          delete entry.iconUrl;
+          return this._store.addData(entry, id);
+        }).catch(() => {
+          return this._store.addData(entry, id);
+        });
+      } else {
+        return this._store.addData(entry, id);
+      }
+    },
+
+    remove: function bm_remove(id) {
+      return this._store.removeData(id);
+    },
+
+    get: function bm_get(id) {
+      return this._store.getData(id);
+    },
+
+    set: function bm_set(id, entry) {
+      entry.date = new Date();
+      if (entry.iconUrl) {
+        return this.fetchIcon(entry.iconUrl).then(iconData => {
+          entry.icon = iconData;
+          delete entry.iconUrl;
+          return this._store.saveData(id, entry);
+        }).catch(() => {
+          return this._store.saveData(id, entry);
+        });
+      } else {
+        return this._store.saveData(id, entry);
+      }
+    },
+
+    fetchIcon: function bm_fetchIcon(url) {
+      return new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest({mozSystem: true});
+        xhr.open('GET', url);
+        xhr.responseType = 'blob';
+        xhr.send();
+
+        xhr.onload = function() {
+          resolve(xhr.response);
+        };
+
+        xhr.onerror = function() {
+          console.warn('Unable to retrive icon data. Leaving icon empty.');
+          reject();
+        };
+      });
+    },
+
+    getLength: function bm_getLength() {
+      return this._store.getLength();
+    }
+  });
+
+  exports.BookmarkManager = BookmarkManager;
+}(window));
+