<vn-watcher vn-id="watcher" data="$ctrl.worker.sip"> </vn-watcher> <form name="form" ng-submit="$ctrl.onSubmit()" class="vn-w-md"> <vn-card class="vn-pa-lg"> <vn-vertical> <vn-horizontal> <vn-textfield label="Extension" ng-model="$ctrl.worker.sip.extension"> </vn-textfield> </vn-horizontal> </vn-vertical> </vn-card> <vn-button-bar> <vn-submit disabled="!watcher.dataChanged()" label="Save"> </vn-submit> <vn-button class="cancel" label="Undo changes" disabled="!watcher.dataChanged()" ng-click="watcher.loadOriginalData()"> </vn-button> </vn-button-bar> </form>