View factory #4367
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| Original file line number | Diff line number | Diff line change |
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@@ -15,6 +15,10 @@ import { | |
| */ | ||
| @CONST() | ||
| export class CompiledTemplate { | ||
| static getChangeDetectorFromData(data: any[]): Function { return data[0]; } | ||
| static getCommandsFromData(data: any[]): TemplateCmd[] { return data[1]; } | ||
| static getSylesFromData(data: any[]): string[] { return data[2]; } | ||
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There was a problem hiding this comment. @tbosch, this was supposed to be named
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There was a problem hiding this comment. Yes, thanks for catching.
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| // Note: paramGetter is a function so that we can have cycles between templates! | ||
| // paramGetter returns a tuple with: | ||
| // - ChangeDetector factory function | ||
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@@ -91,13 +95,11 @@ export function endElement(): TemplateCmd { | |
| export class BeginComponentCmd implements TemplateCmd, IBeginElementCmd, RenderBeginComponentCmd { | ||
| isBound: boolean = true; | ||
| templateId: number; | ||
| constructor(public name: string, public attrNameAndValues: string[], | ||
| public eventTargetAndNames: string[], | ||
| public variableNameAndValues: Array<string | number>, public directives: Type[], | ||
| public nativeShadow: boolean, public ngContentIndex: number, | ||
| public template: CompiledTemplate) { | ||
| this.templateId = template.id; | ||
| } | ||
| visit(visitor: RenderCommandVisitor, context: any): any { | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,62 @@ | ||
| import {BaseException} from 'angular2/src/core/facade/exceptions'; | ||
| import {ListWrapper, MapWrapper, Map, StringMapWrapper} from 'angular2/src/core/facade/collection'; | ||
| import {isPresent, isBlank, stringify} from 'angular2/src/core/facade/lang'; | ||
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| import { | ||
| RenderViewRef, | ||
| RenderEventDispatcher, | ||
| RenderTemplateCmd, | ||
| RenderProtoViewRef, | ||
| RenderFragmentRef | ||
| } from './api'; | ||
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| export class DefaultProtoViewRef extends RenderProtoViewRef { | ||
| constructor(public cmds: RenderTemplateCmd[]) { super(); } | ||
| } | ||
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| export class DefaultRenderFragmentRef<N> extends RenderFragmentRef { | ||
| constructor(public nodes: N[]) { super(); } | ||
| } | ||
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| export class DefaultRenderView<N> extends RenderViewRef { | ||
| hydrated: boolean = false; | ||
| eventDispatcher: RenderEventDispatcher = null; | ||
| globalEventRemovers: Function[] = null; | ||
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| constructor(public fragments: DefaultRenderFragmentRef<N>[], public boundTextNodes: N[], | ||
| public boundElements: N[], public nativeShadowRoots: N[], | ||
| public globalEventAdders: Function[]) { | ||
| super(); | ||
| } | ||
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| hydrate() { | ||
| if (this.hydrated) throw new BaseException('The view is already hydrated.'); | ||
| this.hydrated = true; | ||
| this.globalEventRemovers = ListWrapper.createFixedSize(this.globalEventAdders.length); | ||
| for (var i = 0; i < this.globalEventAdders.length; i++) { | ||
| this.globalEventRemovers[i] = this.globalEventAdders[i](); | ||
| } | ||
| } | ||
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| dehydrate() { | ||
| if (!this.hydrated) throw new BaseException('The view is already dehydrated.'); | ||
| for (var i = 0; i < this.globalEventRemovers.length; i++) { | ||
| this.globalEventRemovers[i](); | ||
| } | ||
| this.globalEventRemovers = null; | ||
| this.hydrated = false; | ||
| } | ||
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| setEventDispatcher(dispatcher: RenderEventDispatcher) { this.eventDispatcher = dispatcher; } | ||
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| dispatchRenderEvent(boundElementIndex: number, eventName: string, event: any): boolean { | ||
| var allowDefaultBehavior = true; | ||
| if (isPresent(this.eventDispatcher)) { | ||
| var locals = new Map(); | ||
| locals.set('$event', event); | ||
| allowDefaultBehavior = | ||
| this.eventDispatcher.dispatchRenderEvent(boundElementIndex, eventName, locals); | ||
| } | ||
| return allowDefaultBehavior; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,230 @@ | ||
| import {isBlank, isPresent} from 'angular2/src/core/facade/lang'; | ||
| import { | ||
| RenderEventDispatcher, | ||
| RenderTemplateCmd, | ||
| RenderCommandVisitor, | ||
| RenderBeginElementCmd, | ||
| RenderBeginComponentCmd, | ||
| RenderNgContentCmd, | ||
| RenderTextCmd, | ||
| RenderEmbeddedTemplateCmd | ||
| } from './api'; | ||
| import {DefaultRenderView, DefaultRenderFragmentRef} from './view'; | ||
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| export function createRenderView(fragmentCmds: RenderTemplateCmd[], inplaceElement: any, | ||
| nodeFactory: NodeFactory<any>): DefaultRenderView<any> { | ||
| var builders: RenderViewBuilder<any>[] = []; | ||
| visitAll(new RenderViewBuilder<any>(null, null, inplaceElement, builders, nodeFactory), | ||
| fragmentCmds); | ||
| var boundElements: any[] = []; | ||
| var boundTextNodes: any[] = []; | ||
| var nativeShadowRoots: any[] = []; | ||
| var fragments: DefaultRenderFragmentRef<any>[] = []; | ||
| var viewElementOffset = 0; | ||
| var view: DefaultRenderView<any>; | ||
| var eventDispatcher = (boundElementIndex: number, eventName: string, event: any) => | ||
| view.dispatchRenderEvent(boundElementIndex, eventName, event); | ||
| var globalEventAdders: Function[] = []; | ||
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| for (var i = 0; i < builders.length; i++) { | ||
| var builder = builders[i]; | ||
| addAll(builder.boundElements, boundElements); | ||
| addAll(builder.boundTextNodes, boundTextNodes); | ||
| addAll(builder.nativeShadowRoots, nativeShadowRoots); | ||
| if (isBlank(builder.rootNodesParent)) { | ||
| fragments.push(new DefaultRenderFragmentRef<any>(builder.fragmentRootNodes)); | ||
| } | ||
| for (var j = 0; j < builder.eventData.length; j++) { | ||
| var eventData = builder.eventData[j]; | ||
| var boundElementIndex = eventData[0] + viewElementOffset; | ||
| var target = eventData[1]; | ||
| var eventName = eventData[2]; | ||
| if (isPresent(target)) { | ||
| var handler = | ||
| createEventHandler(boundElementIndex, `${target}:${eventName}`, eventDispatcher); | ||
| globalEventAdders.push(createGlobalEventAdder(target, eventName, handler, nodeFactory)); | ||
| } else { | ||
| var handler = createEventHandler(boundElementIndex, eventName, eventDispatcher); | ||
| nodeFactory.on(boundElements[boundElementIndex], eventName, handler); | ||
| } | ||
| } | ||
| viewElementOffset += builder.boundElements.length; | ||
| } | ||
| view = new DefaultRenderView<any>(fragments, boundTextNodes, boundElements, nativeShadowRoots, | ||
| globalEventAdders); | ||
| return view; | ||
| } | ||
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| function createEventHandler(boundElementIndex: number, eventName: string, | ||
| eventDispatcher: Function): Function { | ||
| return ($event) => eventDispatcher(boundElementIndex, eventName, $event); | ||
| } | ||
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| function createGlobalEventAdder(target: string, eventName: string, eventHandler: Function, | ||
| nodeFactory: NodeFactory<any>): Function { | ||
| return () => nodeFactory.globalOn(target, eventName, eventHandler); | ||
| } | ||
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| export interface NodeFactory<N> { | ||
| resolveComponentTemplate(templateId: number): RenderTemplateCmd[]; | ||
| createTemplateAnchor(attrNameAndValues: string[]): N; | ||
| createElement(name: string, attrNameAndValues: string[]): N; | ||
| mergeElement(existing: N, attrNameAndValues: string[]); | ||
| createShadowRoot(host: N): N; | ||
| createText(value: string): N; | ||
| appendChild(parent: N, child: N); | ||
| on(element: N, eventName: string, callback: Function); | ||
| globalOn(target: string, eventName: string, callback: Function): Function; | ||
| } | ||
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| class RenderViewBuilder<N> implements RenderCommandVisitor { | ||
| parentStack: Array<N | Component<N>>; | ||
| boundTextNodes: N[] = []; | ||
| boundElements: N[] = []; | ||
| eventData: any[][] = []; | ||
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| fragmentRootNodes: N[] = []; | ||
| nativeShadowRoots: N[] = []; | ||
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| constructor(public parentComponent: Component<N>, public rootNodesParent: N, | ||
| public inplaceElement: N, public allBuilders: RenderViewBuilder<N>[], | ||
| public factory: NodeFactory<N>) { | ||
| this.parentStack = [rootNodesParent]; | ||
| allBuilders.push(this); | ||
| } | ||
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| get parent(): N | Component<N> { return this.parentStack[this.parentStack.length - 1]; } | ||
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| visitText(cmd: RenderTextCmd, context: any): any { | ||
| var text = this.factory.createText(cmd.value); | ||
| this._addChild(text, cmd.ngContentIndex); | ||
| if (cmd.isBound) { | ||
| this.boundTextNodes.push(text); | ||
| } | ||
| return null; | ||
| } | ||
| visitNgContent(cmd: RenderNgContentCmd, context: any): any { | ||
| if (isPresent(this.parentComponent)) { | ||
| var projectedNodes = this.parentComponent.project(); | ||
| for (var i = 0; i < projectedNodes.length; i++) { | ||
| var node = projectedNodes[i]; | ||
| this._addChild(node, cmd.ngContentIndex); | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
| visitBeginElement(cmd: RenderBeginElementCmd, context: any): any { | ||
| this.parentStack.push(this._beginElement(cmd)); | ||
| return null; | ||
| } | ||
| visitEndElement(context: any): any { | ||
| this._endElement(); | ||
| return null; | ||
| } | ||
| visitBeginComponent(cmd: RenderBeginComponentCmd, context: any): any { | ||
| var el = this._beginElement(cmd); | ||
| var root = el; | ||
| if (cmd.nativeShadow) { | ||
| root = this.factory.createShadowRoot(el); | ||
| this.nativeShadowRoots.push(root); | ||
| } | ||
| this.parentStack.push(new Component(el, root, cmd, this.factory)); | ||
| return null; | ||
| } | ||
| visitEndComponent(context: any): any { | ||
| var c = <Component<N>>this.parent; | ||
| var template = this.factory.resolveComponentTemplate(c.cmd.templateId); | ||
| this._visitChildTemplate(template, c, c.shadowRoot); | ||
| this._endElement(); | ||
| return null; | ||
| } | ||
| visitEmbeddedTemplate(cmd: RenderEmbeddedTemplateCmd, context: any): any { | ||
| var el = this.factory.createTemplateAnchor(cmd.attrNameAndValues); | ||
| this._addChild(el, cmd.ngContentIndex); | ||
| this.boundElements.push(el); | ||
| if (cmd.isMerged) { | ||
| this._visitChildTemplate(cmd.children, this.parentComponent, null); | ||
| } | ||
| return null; | ||
| } | ||
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| private _beginElement(cmd: RenderBeginElementCmd): N { | ||
| var el: N; | ||
| if (isPresent(this.inplaceElement)) { | ||
| el = this.inplaceElement; | ||
| this.inplaceElement = null; | ||
| this.factory.mergeElement(el, cmd.attrNameAndValues); | ||
| this.fragmentRootNodes.push(el); | ||
| } else { | ||
| el = this.factory.createElement(cmd.name, cmd.attrNameAndValues); | ||
| this._addChild(el, cmd.ngContentIndex); | ||
| } | ||
| if (cmd.isBound) { | ||
| this.boundElements.push(el); | ||
| for (var i = 0; i < cmd.eventTargetAndNames.length; i += 2) { | ||
| var target = cmd.eventTargetAndNames[i]; | ||
| var eventName = cmd.eventTargetAndNames[i + 1]; | ||
| this.eventData.push([this.boundElements.length - 1, target, eventName]); | ||
| } | ||
| } | ||
| return el; | ||
| } | ||
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| private _endElement() { this.parentStack.pop(); } | ||
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| private _visitChildTemplate(cmds: RenderTemplateCmd[], parent: Component<N>, rootNodesParent: N) { | ||
| visitAll(new RenderViewBuilder(parent, rootNodesParent, null, this.allBuilders, this.factory), | ||
| cmds); | ||
| } | ||
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| private _addChild(node: N, ngContentIndex: number) { | ||
| var parent = this.parent; | ||
| if (isPresent(parent)) { | ||
| if (parent instanceof Component) { | ||
| parent.addContentNode(ngContentIndex, node); | ||
| } else { | ||
| this.factory.appendChild(<N>parent, node); | ||
| } | ||
| } else { | ||
| this.fragmentRootNodes.push(node); | ||
| } | ||
| } | ||
| } | ||
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| class Component<N> { | ||
| private contentNodesByNgContentIndex: N[][] = []; | ||
| private projectingNgContentIndex: number = 0; | ||
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| constructor(public hostElement: N, public shadowRoot: N, public cmd: RenderBeginComponentCmd, | ||
| public factory: NodeFactory<N>) {} | ||
| addContentNode(ngContentIndex: number, node: N) { | ||
| if (isBlank(ngContentIndex)) { | ||
| if (this.cmd.nativeShadow) { | ||
| this.factory.appendChild(this.hostElement, node); | ||
| } | ||
| } else { | ||
| while (this.contentNodesByNgContentIndex.length <= ngContentIndex) { | ||
| this.contentNodesByNgContentIndex.push([]); | ||
| } | ||
| this.contentNodesByNgContentIndex[ngContentIndex].push(node); | ||
| } | ||
| } | ||
| project(): N[] { | ||
| var ngContentIndex = this.projectingNgContentIndex++; | ||
| return ngContentIndex < this.contentNodesByNgContentIndex.length ? | ||
| this.contentNodesByNgContentIndex[ngContentIndex] : | ||
| []; | ||
| } | ||
| } | ||
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| function addAll(source: any[], target: any[]) { | ||
| for (var i = 0; i < source.length; i++) { | ||
| target.push(source[i]); | ||
| } | ||
| } | ||
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| function visitAll(visitor: RenderCommandVisitor, fragmentCmds: RenderTemplateCmd[]) { | ||
| for (var i = 0; i < fragmentCmds.length; i++) { | ||
| fragmentCmds[i].visit(visitor, null); | ||
| } | ||
| } |
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Comment: For non components there is nothing to be normalized