angular2/src/render/dom/view/view.map

Angular 2 - a web framework for modern web apps

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{DOM} from 'angular2/src/dom/dom_adapter';\nimport {ListWrapper, MapWrapper, Map, StringMapWrapper, List} from 'angular2/src/facade/collection';\nimport {int, isPresent, isBlank, BaseException} from 'angular2/src/facade/lang';\n\nimport {ViewContainer} from './view_container';\nimport {RenderProtoView} from './proto_view';\nimport {LightDom} from '../shadow_dom/light_dom';\nimport {Content} from '../shadow_dom/content_tag';\n\n// import {EventDispatcher} from '../../api';\n\nconst NG_BINDING_CLASS = 'ng-binding';\n\n/**\n * Const of making objects: http://jsperf.com/instantiate-size-of-object\n */\nexport class RenderView {\n  boundElements:List;\n  boundTextNodes:List;\n  /// When the view is part of render tree, the DocumentFragment is empty, which is why we need\n  /// to keep track of the nodes.\n  rootNodes:List;\n  // TODO(tbosch): move componentChildViews, viewContainers, contentTags, lightDoms into\n  // a single array with records inside\n  componentChildViews: List<RenderView>;\n  viewContainers: List<ViewContainer>;\n  contentTags: List<Content>;\n  lightDoms: List<LightDom>;\n  hostLightDom: LightDom;\n  proto: RenderProtoView;\n  hydrated: boolean;\n  _eventDispatcher: any/*EventDispatcher*/;\n  eventHandlerRemovers: List<Function>;\n  /// Host views that were added by an imperative view.\n  /// This is a dynamically growing / shrinking array.\n  imperativeHostViews: List<RenderView>;\n\n  constructor(\n      proto:RenderProtoView, rootNodes:List,\n      boundTextNodes: List, boundElements:List, contentTags:List) {\n    this.proto = proto;\n    this.rootNodes = rootNodes;\n    this.boundTextNodes = boundTextNodes;\n    this.boundElements = boundElements;\n    this.viewContainers = ListWrapper.createFixedSize(boundElements.length);\n    this.contentTags = contentTags;\n    this.lightDoms = ListWrapper.createFixedSize(boundElements.length);\n    ListWrapper.fill(this.lightDoms, null);\n    this.componentChildViews = ListWrapper.createFixedSize(boundElements.length);\n    this.hostLightDom = null;\n    this.hydrated = false;\n    this.eventHandlerRemovers = [];\n    this.imperativeHostViews = [];\n  }\n\n  getDirectParentLightDom(boundElementIndex:number) {\n    var binder = this.proto.elementBinders[boundElementIndex];\n    var destLightDom = null;\n    if (binder.parentIndex !== -1 && binder.distanceToParent === 1) {\n      destLightDom = this.lightDoms[binder.parentIndex];\n    }\n    return destLightDom;\n  }\n\n  getOrCreateViewContainer(binderIndex) {\n    var vc = this.viewContainers[binderIndex];\n    if (isBlank(vc)) {\n      vc = new ViewContainer(this, binderIndex);\n      this.viewContainers[binderIndex] = vc;\n    }\n    return vc;\n  }\n\n  setElementProperty(elementIndex:number, propertyName:string, value:any) {\n    var setter = MapWrapper.get(this.proto.elementBinders[elementIndex].propertySetters, propertyName);\n    setter(this.boundElements[elementIndex], value);\n  }\n\n  setText(textIndex:number, value:string) {\n    DOM.setText(this.boundTextNodes[textIndex], value);\n  }\n\n  getViewContainer(index:number):ViewContainer {\n    return this.viewContainers[index];\n  }\n\n  setEventDispatcher(dispatcher:any/*EventDispatcher*/) {\n    this._eventDispatcher = dispatcher;\n  }\n\n  dispatchEvent(elementIndex, eventName, event): boolean {\n    var allowDefaultBehavior = true;\n    if (isPresent(this._eventDispatcher)) {\n      var evalLocals = MapWrapper.create();\n      MapWrapper.set(evalLocals, '$event', event);\n      // TODO(tbosch): reenable this when we are parsing element properties\n      // out of action expressions\n      // var localValues = this.proto.elementBinders[elementIndex].eventLocals.eval(null, new Locals(null, evalLocals));\n      // this._eventDispatcher.dispatchEvent(elementIndex, eventName, localValues);\n      allowDefaultBehavior = this._eventDispatcher.dispatchEvent(elementIndex, eventName, evalLocals);\n      if (!allowDefaultBehavior) {\n        event.preventDefault();\n      }\n    }\n    return allowDefaultBehavior;\n  }\n}\n"]}