feat(compiler): allow to create ChangeDetectors from parsed templates
Part of #3605 Closes #3950
This commit is contained in:
Tobias Bosch
220
modules/angular2/test/compiler/change_definition_factory_spec.ts
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220
modules/angular2/test/compiler/change_definition_factory_spec.ts
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import {
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AsyncTestCompleter,
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beforeEach,
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ddescribe,
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describe,
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el,
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expect,
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iit,
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inject,
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it,
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xit,
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TestComponentBuilder,
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asNativeElements,
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By
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} from 'angular2/test_lib';
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import {MapWrapper} from 'angular2/src/core/facade/collection';
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import {isBlank} from 'angular2/src/core/facade/lang';
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import {HtmlParser} from 'angular2/src/compiler/html_parser';
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import {DirectiveMetadata, TypeMetadata, ChangeDetectionMetadata} from 'angular2/src/compiler/api';
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import {MockSchemaRegistry} from './template_parser_spec';
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import {TemplateParser} from 'angular2/src/compiler/template_parser';
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import {
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Parser,
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Lexer,
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ChangeDetectorDefinition,
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ChangeDetectorGenConfig,
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DynamicProtoChangeDetector,
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ProtoChangeDetector,
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ChangeDetectionStrategy,
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ChangeDispatcher,
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DirectiveIndex,
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Locals,
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BindingTarget,
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ChangeDetector
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} from 'angular2/src/core/change_detection/change_detection';
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import {Pipes} from 'angular2/src/core/change_detection/pipes';
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import {createChangeDetectorDefinitions} from 'angular2/src/compiler/change_definition_factory';
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export function main() {
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describe('ChangeDefinitionFactory', () => {
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var domParser: HtmlParser;
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var parser: TemplateParser;
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var dispatcher: TestDispatcher;
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var context: TestContext;
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var directive: TestDirective;
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var locals: Locals;
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var pipes: Pipes;
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var eventLocals: Locals;
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beforeEach(() => {
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domParser = new HtmlParser();
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parser = new TemplateParser(
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new Parser(new Lexer()),
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new MockSchemaRegistry({'invalidProp': false}, {'mappedAttr': 'mappedProp'}));
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context = new TestContext();
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directive = new TestDirective();
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dispatcher = new TestDispatcher([directive], []);
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locals = new Locals(null, MapWrapper.createFromStringMap({'someVar': null}));
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eventLocals = new Locals(null, MapWrapper.createFromStringMap({'$event': null}));
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pipes = new TestPipes();
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});
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function createChangeDetector(template: string, directives: DirectiveMetadata[],
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protoViewIndex: number = 0): ChangeDetector {
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var protoChangeDetectors =
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createChangeDetectorDefinitions(
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new TypeMetadata({typeName: 'SomeComp'}), ChangeDetectionStrategy.CheckAlways,
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new ChangeDetectorGenConfig(true, true, false),
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parser.parse(domParser.parse(template, 'TestComp'), directives))
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.map(definition => new DynamicProtoChangeDetector(definition));
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var changeDetector = protoChangeDetectors[protoViewIndex].instantiate(dispatcher);
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changeDetector.hydrate(context, locals, dispatcher, pipes);
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return changeDetector;
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}
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it('should watch element properties', () => {
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var changeDetector = createChangeDetector('<div [el-prop]="someProp">', [], 0);
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context.someProp = 'someValue';
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changeDetector.detectChanges();
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expect(dispatcher.log).toEqual(['elementProperty(elProp)=someValue']);
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});
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it('should watch text nodes', () => {
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var changeDetector = createChangeDetector('{{someProp}}', [], 0);
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context.someProp = 'someValue';
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changeDetector.detectChanges();
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expect(dispatcher.log).toEqual(['textNode(null)=someValue']);
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});
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it('should handle events', () => {
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var changeDetector = createChangeDetector('<div on-click="onEvent($event)">', [], 0);
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eventLocals.set('$event', 'click');
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changeDetector.handleEvent('click', 0, eventLocals);
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expect(context.eventLog).toEqual(['click']);
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});
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it('should watch variables', () => {
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var changeDetector = createChangeDetector('<div #some-var [el-prop]="someVar">', [], 0);
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locals.set('someVar', 'someValue');
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changeDetector.detectChanges();
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expect(dispatcher.log).toEqual(['elementProperty(elProp)=someValue']);
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});
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it('should write directive properties', () => {
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var dirMeta = new DirectiveMetadata({
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type: new TypeMetadata({typeName: 'SomeDir'}),
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selector: 'div',
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changeDetection: new ChangeDetectionMetadata({properties: ['dirProp']})
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});
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var changeDetector = createChangeDetector('<div [dir-prop]="someProp">', [dirMeta], 0);
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context.someProp = 'someValue';
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changeDetector.detectChanges();
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expect(directive.dirProp).toEqual('someValue');
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});
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it('should watch directive host properties', () => {
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var dirMeta = new DirectiveMetadata({
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type: new TypeMetadata({typeName: 'SomeDir'}),
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selector: 'div',
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changeDetection: new ChangeDetectionMetadata({hostProperties: {'elProp': 'dirProp'}})
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});
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var changeDetector = createChangeDetector('<div>', [dirMeta], 0);
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directive.dirProp = 'someValue';
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changeDetector.detectChanges();
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expect(dispatcher.log).toEqual(['elementProperty(elProp)=someValue']);
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});
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it('should handle directive events', () => {
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var dirMeta = new DirectiveMetadata({
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type: new TypeMetadata({typeName: 'SomeDir'}),
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selector: 'div',
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changeDetection:
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new ChangeDetectionMetadata({hostListeners: {'click': 'onEvent($event)'}})
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});
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var changeDetector = createChangeDetector('<div>', [dirMeta], 0);
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eventLocals.set('$event', 'click');
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changeDetector.handleEvent('click', 0, eventLocals);
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expect(directive.eventLog).toEqual(['click']);
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});
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it('should create change detectors for embedded templates', () => {
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var changeDetector = createChangeDetector('<template>{{someProp}}<template>', [], 1);
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context.someProp = 'someValue';
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changeDetector.detectChanges();
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expect(dispatcher.log).toEqual(['textNode(null)=someValue']);
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});
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it('should watch expressions after embedded templates', () => {
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var changeDetector =
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createChangeDetector('<template>{{someProp2}}</template>{{someProp}}', [], 0);
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context.someProp = 'someValue';
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changeDetector.detectChanges();
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expect(dispatcher.log).toEqual(['textNode(null)=someValue']);
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});
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});
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}
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class TestContext {
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eventLog: string[] = [];
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someProp: string;
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someProp2: string;
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onEvent(value: string) { this.eventLog.push(value); }
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}
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class TestDirective {
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eventLog: string[] = [];
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dirProp: string;
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onEvent(value: string) { this.eventLog.push(value); }
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}
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class TestDispatcher implements ChangeDispatcher {
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log: string[];
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constructor(public directives: any[], public detectors: ProtoChangeDetector[]) { this.clear(); }
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getDirectiveFor(di: DirectiveIndex) { return this.directives[di.directiveIndex]; }
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getDetectorFor(di: DirectiveIndex) { return this.detectors[di.directiveIndex]; }
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clear() { this.log = []; }
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notifyOnBinding(target: BindingTarget, value) {
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this.log.push(`${target.mode}(${target.name})=${this._asString(value)}`);
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}
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logBindingUpdate(target, value) {}
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notifyAfterContentChecked() {}
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notifyAfterViewChecked() {}
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getDebugContext(a, b) { return null; }
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_asString(value) { return (isBlank(value) ? 'null' : value.toString()); }
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}
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class TestPipes implements Pipes {
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get(type: string) { return null; }
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}
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@ -667,11 +667,11 @@ export function humanizeTemplateAsts(templateAsts: TemplateAst[]): any[] {
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class TemplateHumanizer implements TemplateAstVisitor {
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result: any[] = [];
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visitNgContent(ast: NgContentAst): any {
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visitNgContent(ast: NgContentAst, context: any): any {
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this.result.push([NgContentAst, ast.select, ast.sourceInfo]);
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return null;
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}
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visitEmbeddedTemplate(ast: EmbeddedTemplateAst): any {
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visitEmbeddedTemplate(ast: EmbeddedTemplateAst, context: any): any {
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this.result.push([EmbeddedTemplateAst, ast.sourceInfo]);
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templateVisitAll(this, ast.attrs);
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templateVisitAll(this, ast.vars);
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@ -679,7 +679,7 @@ class TemplateHumanizer implements TemplateAstVisitor {
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templateVisitAll(this, ast.children);
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return null;
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}
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visitElement(ast: ElementAst): any {
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visitElement(ast: ElementAst, context: any): any {
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this.result.push([ElementAst, ast.sourceInfo]);
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templateVisitAll(this, ast.attrs);
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templateVisitAll(this, ast.properties);
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@ -689,11 +689,11 @@ class TemplateHumanizer implements TemplateAstVisitor {
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templateVisitAll(this, ast.children);
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return null;
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}
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visitVariable(ast: VariableAst): any {
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visitVariable(ast: VariableAst, context: any): any {
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this.result.push([VariableAst, ast.name, ast.value, ast.sourceInfo]);
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return null;
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}
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visitEvent(ast: BoundEventAst): any {
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visitEvent(ast: BoundEventAst, context: any): any {
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this.result.push([
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BoundEventAst,
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ast.name,
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@ -703,7 +703,7 @@ class TemplateHumanizer implements TemplateAstVisitor {
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]);
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return null;
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}
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visitElementProperty(ast: BoundElementPropertyAst): any {
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visitElementProperty(ast: BoundElementPropertyAst, context: any): any {
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this.result.push([
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BoundElementPropertyAst,
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ast.type,
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@ -714,26 +714,26 @@ class TemplateHumanizer implements TemplateAstVisitor {
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]);
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return null;
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}
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visitAttr(ast: AttrAst): any {
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visitAttr(ast: AttrAst, context: any): any {
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this.result.push([AttrAst, ast.name, ast.value, ast.sourceInfo]);
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return null;
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}
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visitBoundText(ast: BoundTextAst): any {
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visitBoundText(ast: BoundTextAst, context: any): any {
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this.result.push([BoundTextAst, expressionUnparser.unparse(ast.value), ast.sourceInfo]);
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return null;
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}
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visitText(ast: TextAst): any {
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visitText(ast: TextAst, context: any): any {
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this.result.push([TextAst, ast.value, ast.sourceInfo]);
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return null;
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}
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visitDirective(ast: DirectiveAst): any {
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visitDirective(ast: DirectiveAst, context: any): any {
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this.result.push([DirectiveAst, ast.directive, ast.sourceInfo]);
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templateVisitAll(this, ast.properties);
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templateVisitAll(this, ast.hostProperties);
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templateVisitAll(this, ast.hostEvents);
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return null;
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}
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visitDirectiveProperty(ast: BoundDirectivePropertyAst): any {
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visitDirectiveProperty(ast: BoundDirectivePropertyAst, context: any): any {
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this.result.push([
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BoundDirectivePropertyAst,
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ast.directiveName,
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@ -744,7 +744,7 @@ class TemplateHumanizer implements TemplateAstVisitor {
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}
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}
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class MockSchemaRegistry implements ElementSchemaRegistry {
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export class MockSchemaRegistry implements ElementSchemaRegistry {
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constructor(public existingProperties: StringMap<string, boolean>,
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public attrPropMapping: StringMap<string, string>) {}
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hasProperty(tagName: string, property: string): boolean {
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