(js) Fix download of exported folders under iOS

Whenever possible, we no longer rely on the FileSaver.js library to
download zip archives. Instead, we do a simple GET on the resource by
changing the window location.

NEWS

@@ -6,6 +6,7 @@ Enhancements
  - [web] show current ordering setting in lists
  - [web] remove invalid occurrences when modifying a recurrent event
  - [web] updated Angular Material to version 1.1.9
+ - [web] allow mail flag addition/edition on mobile
 
 Bug fixes
  - [core] properly update the last-modified attribute (#4313)
@@ -14,6 +15,7 @@ Bug fixes
  - [web] prevent deletion of special folders using del key
  - [web] fixed SAML2 session timeout handling during XHR requests
  - [web] fixed renaming a folder under iOS
+ - [web] fixed download of exported folders under iOS
  - [eas] improved alarms syncing with EAS devices (#4351)
  - [eas] avoid potential cache update when breaking sync queries (#4422)
 

UI/WebServerResources/js/Common/Resource.service.js

@@ -11,10 +11,11 @@
    * @param {String} path - the base path of the external resource
    * @param {Object} options - extra attributes to be associated to the object
    */
-  function Resource($http, $q, path, activeUser, options) {
+  function Resource($http, $q, $window, path, activeUser, options) {
     angular.extend(this, {
       _http: $http,
       _q: $q,
+      _window: $window,
       _path: path,
       _activeUser: activeUser
     });
@@ -28,9 +29,9 @@
    * @desc The factory we'll use to register with Angular.
    * @return a new Resource object
    */
-  Resource.$factory =  ['$http', '$q', function($http, $q) {
+  Resource.$factory =  ['$http', '$q', '$window', function($http, $q, $window) {
     return function(path, activeUser, options) {
-      return new Resource($http, $q, path, activeUser, options);
+      return new Resource($http, $q, $window, path, activeUser, options);
     };
   }];
 
@@ -232,6 +233,15 @@
     });
   };
 
+  Resource.prototype.open = function(id, action) {
+    var path = [this._path];
+    if (id) path.push(id);
+    if (action) path.push(action);
+    path = _.compact(_.flatten(path)).join('/');
+
+    this._window.location.href = path;
+  };
+
   /**
    * @function remove
    * @memberof Resource.prototype

UI/WebServerResources/js/Contacts/AddressBook.service.js

@@ -723,7 +723,12 @@
       data = { uids: _.map(selectedCards, 'id') };
     }
 
-    return AddressBook.$$resource.download(this.id, 'export', data, options);
+    if (data) {
+      return AddressBook.$$resource.download(this.id, 'export', data, options);
+    }
+    else {
+      return AddressBook.$$resource.open(this.id, 'export', data, options);
+    }
   };
 
   /**

UI/WebServerResources/js/Mailer/Mailbox.service.js

@@ -683,7 +683,7 @@
 
     options = { filename: this.name + '.zip' };
 
-    return Mailbox.$$resource.download(this.id, 'exportFolder', null, options);
+    return Mailbox.$$resource.open(this.id, 'exportFolder', null, options);
   };
 
   /**

UI/WebServerResources/js/Scheduler/Calendar.service.js

@@ -554,7 +554,7 @@
       filename: this.name + '.ics'
     };
 
-    return Calendar.$$resource.download(this.id + '.ics', 'export', null, options);
+    return Calendar.$$resource.open(this.id + '.ics', 'export', null, options);
   };
 
   /**