import {internalView, ProtoViewRef} from './view_ref';

import {ElementRef} from './element_ref';

import * as viewModule from './view';

/**

* Reference to a template within a component.

*

* Represents an opaque reference to the underlying template that can

* be instantiated using the {@link ViewContainerRef}.

*/

export class TemplateRef {

/**

* The location of the template

*/

elementRef: ElementRef;

constructor(elementRef: ElementRef) { this.elementRef = elementRef; }

private _getProtoView(): viewModule.AppProtoView {

var parentView = internalView(this.elementRef.parentView);

return parentView.proto

.elementBinders[this.elementRef.boundElementIndex - parentView.elementOffset]

.nestedProtoView;

}

get protoViewRef(): ProtoViewRef { return this._getProtoView().ref; }

/**

* Whether this template has a local variable with the given name

*/

hasLocal(name: string): boolean { return this._getProtoView().variableBindings.has(name); }

}