/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */


import {RNode} from './renderer';
import {LView} from './view';

/**
 * This property will be monkey-patched on elements, components and directives
 */
export const MONKEY_PATCH_KEY_NAME = '__ngContext__';

/**
 * The internal view context which is specific to a given DOM element, directive or
 * component instance. Each value in here (besides the LView and element node details)
 * can be present, null or undefined. If undefined then it implies the value has not been
 * looked up yet, otherwise, if null, then a lookup was executed and nothing was found.
 *
 * Each value will get filled when the respective value is examined within the getContext
 * function. The component, element and each directive instance will share the same instance
 * of the context.
 */
export interface LContext {
  /**
   * The component's parent view data.
   */
  lView: LView;

  /**
   * The index instance of the node.
   */
  nodeIndex: number;

  /**
   * The instance of the DOM node that is attached to the lNode.
   */
  native: RNode;

  /**
   * The instance of the Component node.
   */
  component: {}|null|undefined;

  /**
   * The list of active directives that exist on this element.
   */
  directives: any[]|null|undefined;

  /**
   * The map of local references (local reference name => element or directive instance) that exist
   * on this element.
   */
  localRefs: {[key: string]: any}|null|undefined;
}