<div class="left-bar">
  <div ng-switch on="directory.mode">
    <div ng-switch-when="list"></div>
    <div ng-switch-when="create"></div>
    <div ng-switch-when="edit"></div>
  </div>
</div>
<div class="main-content">
  <div ng-switch on="files.mode">
    <div ng-switch-when="list"></div>
    <div ng-switch-when="create"></div>
    <div ng-switch-when="edit"></div>
  </div>
</div>

.state('main.folder-list.file-list')
.state('main.folder-list.file-edit')
.state('main.folder-list.file-create')
.state('main.folder-edit.file-list')
.state('main.folder-edit.file-edit')
.state('main.folder-edit.file-create')
.state('main.folder-create.file-list')
.state('main.folder-create.file-edit')
.state('main.folder-create.file-create')