54 lines
2.2 KiB
TypeScript
54 lines
2.2 KiB
TypeScript
import {ProtoViewRef} from 'angular2/src/core/linker/view_ref';
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import {ProtoViewFactory} from 'angular2/src/core/linker/proto_view_factory';
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import {Injectable} from 'angular2/src/core/di';
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import {Type, isBlank, stringify} from 'angular2/src/core/facade/lang';
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import {BaseException} from 'angular2/src/core/facade/exceptions';
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import {Promise, PromiseWrapper} from 'angular2/src/core/facade/async';
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import {ListWrapper} from 'angular2/src/core/facade/collection';
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import {reflector} from 'angular2/src/core/reflection/reflection';
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import {CompiledHostTemplate} from 'angular2/src/core/linker/template_commands';
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/**
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* Low-level service for compiling {@link Component}s into {@link ProtoViewRef ProtoViews}s, which
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* can later be used to create and render a Component instance.
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*
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* Most applications should instead use higher-level {@link DynamicComponentLoader} service, which
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* both compiles and instantiates a Component.
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*/
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export abstract class Compiler {
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abstract compileInHost(componentType: Type): Promise<ProtoViewRef>;
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abstract clearCache();
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}
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function _isCompiledHostTemplate(type: any): boolean {
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return type instanceof CompiledHostTemplate;
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}
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@Injectable()
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export class Compiler_ extends Compiler {
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constructor(private _protoViewFactory: ProtoViewFactory) { super(); }
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compileInHost(componentType: Type): Promise<ProtoViewRef> {
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var metadatas = reflector.annotations(componentType);
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var compiledHostTemplate = ListWrapper.find(metadatas, _isCompiledHostTemplate);
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if (isBlank(compiledHostTemplate)) {
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throw new BaseException(
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`No precompiled template for component ${stringify(componentType)} found`);
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}
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return PromiseWrapper.resolve(this._createProtoView(compiledHostTemplate));
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}
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private _createProtoView(compiledHostTemplate: CompiledHostTemplate): ProtoViewRef {
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return this._protoViewFactory.createHost(compiledHostTemplate).ref;
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}
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clearCache() { this._protoViewFactory.clearCache(); }
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}
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export function internalCreateProtoView(compiler: Compiler,
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compiledHostTemplate: CompiledHostTemplate): ProtoViewRef {
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return (<any>compiler)._createProtoView(compiledHostTemplate);
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}
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