grafana/public/app/partials/unsaved-changes.html

<div class="modal-body" ng-controller="SaveDashboardMessageCtrl" ng-init="init();">
	<div class="modal-header">
		<h2 class="modal-header-title">
			<i class="fa fa-exclamation"></i>
			<span class="p-l-1">Unsaved changes</span>
		</h2>

		<a class="modal-header-close" ng-click="dismiss();">
			<i class="fa fa-remove"></i>
		</a>
	</div>

	<form name="saveMessage" ng-submit="saveVersion(saveMessage.$valid)" class="modal-content" novalidate>
		<h6 class="text-center">
			You're leaving without saving your changes, are you sure you want to leave? To save, add a small note to describe the changes in this version.
		</h6>
		<div class="p-t-2">
			<div class="gf-form">
				<label class="gf-form-hint">
					<input
						type="text"
						name="message"
						class="gf-form-input"
						placeholder="Updates to &hellip;"
						give-focus="true"
						ng-model="clone.message"
						ng-model-options="{allowInvalid: true}"
						ng-keydown="keyDown($event)"
						ng-maxlength="clone.max"
						autocomplete="off"
						required />
					<small class="gf-form-hint-text muted" ng-cloak>
						<span ng-class="{'text-error': saveMessage.message.$invalid && saveMessage.message.$dirty }">
							{{clone.message.length || 0}}
						</span>
						/ {{clone.max}} characters
					</small>
				</label>
			</div>
		</div>

		<div class="gf-form-button-row text-center">
			<button type="submit" class="btn btn-success" ng-disabled="saveMessage.$invalid">
				Save changes
			</button>
			<button type="button" class="btn btn-danger" ng-click="ignore();dismiss()">
				Discard changes and leave
			</button>
			<button class="btn btn-inverse" ng-click="dismiss();">Cancel</button>
		</div>
	</form>

</div>