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assets/webapps/communications.gaiamobile.org/contacts/services/contacts.js

@@ -0,0 +1,179 @@
+(function(exports) {
+
+  /* global utils */
+  /* exported ContactsService*/
+
+  'use strict';
+
+  /*
+   * Currently we are going to expose all functionality related with
+   * mozContacts API through a common interface.
+   *
+   * In the near future, all these code will expose the same
+   * functionality, but we will use Threads.js instead.
+   *
+   */
+
+
+  // All events based on mozConcacts will be handled by this var
+  var events = {};
+
+  // Execute all handlers based on an event type
+  function executeHandlers(e) {
+
+    var handlers = events[e.type];
+    if (!handlers) {
+      return;
+    }
+    for (var i = 0; i < handlers.length; i++) {
+      handlers[i](e);
+    }
+  }
+
+  function registerListeners(event) {
+    navigator.mozContacts.addEventListener(event, executeHandlers);
+  }
+
+  function unregisterListeners(event) {
+    navigator.mozContacts.removeEventListener(event, executeHandlers);
+  }
+
+
+  var ContactsService = {
+    addListener: function(event, handler) {
+      if (!events[event]) {
+        events[event] = [handler];
+        registerListeners(event);
+      } else {
+        events[event].push(handler);
+      }
+    },
+    removeListener: function(event, handler) {
+      var handlers = events[event];
+      if (!handlers || handlers.length === 0) {
+        return;
+      }
+
+      for (var i = 0; i < handlers.length; i++) {
+        if (handlers[i] === handler) {
+          handlers.splice(i, 1);
+          break;
+        }
+      }
+
+      handlers = events[event];
+      if (handlers.length === 0) {
+        unregisterListeners(event);
+        delete events[event];
+      }
+    },
+    isEmpty: function(callback) {
+      var req = navigator.mozContacts.getCount();
+      req.onsuccess = function() {
+        callback(null, req.result === 0);
+      };
+
+      req.onerror = function() {
+        callback(new Error('Error while retrieving the number of Contacts'));
+      };
+    },
+    save: function(contact, callback) {
+      var req = navigator.mozContacts.save(contact);
+      req.onsuccess = function() {
+        callback();
+      };
+      req.onerror = function() {
+        callback(req.error);
+      };
+    },
+    remove: function(contact, callback) {
+      var request =
+        navigator.mozContacts.remove(utils.misc.toMozContact(contact));
+      request.onsuccess = function() {
+        callback();
+      };
+      request.onerror = function() {
+        callback(new Error('mozContact.remove was not'));
+      };
+    },
+    get: function getContactByID(contactID, successCb, errorCb) {
+      if (!contactID) {
+        successCb();
+        return;
+      }
+
+      var options = {
+        filterBy: ['id'],
+        filterOp: 'equals',
+        filterValue: contactID
+      };
+      var request = navigator.mozContacts.find(options);
+
+      request.onsuccess = function findCallback(e) {
+        var result = e.target.result[0];
+        successCb(result);
+      };
+
+      if (typeof errorCb === 'function') {
+        request.onerror = errorCb;
+      }
+    },
+    getAll: function(callback) {
+      if (typeof callback !== 'function') {
+        return;
+      }
+      var request = navigator.mozContacts.find({});
+      request.onsuccess = function onSuccess() {
+        callback(null, request.result);
+      };
+      request.onerror = function onError() {
+        callback(new Error('mozContacts.find for retrieving all dont work'));
+      };
+    },
+    getAllStreamed: function(sortBy, onContactCB, onErrorCB, onCompleteCB) {
+      // Ensure all callbacks are available
+      if (typeof onContactCB !== 'function') {
+        onContactCB = function() {};
+      }
+
+      if (typeof onErrorCB !== 'function') {
+        onErrorCB = function() {};
+      }
+
+      if (typeof onCompleteCB !== 'function') {
+        onCompleteCB = function() {};
+      }
+
+      // Execute the search
+      var options = {
+        sortBy: sortBy,
+        sortOrder: 'ascending'
+      };
+      var cursor = navigator.mozContacts.getAll(options);
+
+      cursor.onsuccess = function onsuccess(evt) {
+        var contact = evt.target.result;
+        if (contact) {
+          onContactCB(contact);
+          cursor.continue();
+        } else {
+          onCompleteCB();
+        }
+      };
+      cursor.onerror = onErrorCB;
+    },
+
+    getCount: function(callback) {
+      var req = navigator.mozContacts.getCount();
+      req.onsuccess = function() {
+        callback(req.result);
+      };
+
+      req.onerror = function() {
+        callback(new Error('Error while retrieving the number of Contacts'));
+      };
+    }
+  };
+
+  exports.ContactsService = ContactsService;
+}(this));