angular2
Version:
Angular 2 - a web framework for modern web apps
163 lines (162 loc) • 7.57 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
};
import { resolveForwardRef } from 'angular2/src/core/di';
import { Type, isBlank, isPresent, isArray, stringify } from 'angular2/src/facade/lang';
import { BaseException } from 'angular2/src/facade/exceptions';
import * as cpl from './directive_metadata';
import * as md from 'angular2/src/core/metadata/directives';
import { DirectiveResolver } from 'angular2/src/core/linker/directive_resolver';
import { PipeResolver } from 'angular2/src/core/linker/pipe_resolver';
import { ViewResolver } from 'angular2/src/core/linker/view_resolver';
import { hasLifecycleHook } from 'angular2/src/core/linker/directive_lifecycle_reflector';
import { LIFECYCLE_HOOKS_VALUES } from 'angular2/src/core/linker/interfaces';
import { reflector } from 'angular2/src/core/reflection/reflection';
import { Injectable, Inject, Optional } from 'angular2/src/core/di';
import { PLATFORM_DIRECTIVES, PLATFORM_PIPES } from 'angular2/src/core/platform_directives_and_pipes';
import { MODULE_SUFFIX } from './util';
import { getUrlScheme } from 'angular2/src/compiler/url_resolver';
export let RuntimeMetadataResolver = class {
constructor(_directiveResolver, _pipeResolver, _viewResolver, _platformDirectives, _platformPipes) {
this._directiveResolver = _directiveResolver;
this._pipeResolver = _pipeResolver;
this._viewResolver = _viewResolver;
this._platformDirectives = _platformDirectives;
this._platformPipes = _platformPipes;
this._directiveCache = new Map();
this._pipeCache = new Map();
}
getDirectiveMetadata(directiveType) {
var meta = this._directiveCache.get(directiveType);
if (isBlank(meta)) {
var dirMeta = this._directiveResolver.resolve(directiveType);
var moduleUrl = null;
var templateMeta = null;
var changeDetectionStrategy = null;
if (dirMeta instanceof md.ComponentMetadata) {
var cmpMeta = dirMeta;
moduleUrl = calcModuleUrl(directiveType, cmpMeta);
var viewMeta = this._viewResolver.resolve(directiveType);
templateMeta = new cpl.CompileTemplateMetadata({
encapsulation: viewMeta.encapsulation,
template: viewMeta.template,
templateUrl: viewMeta.templateUrl,
styles: viewMeta.styles,
styleUrls: viewMeta.styleUrls
});
changeDetectionStrategy = cmpMeta.changeDetection;
}
meta = cpl.CompileDirectiveMetadata.create({
selector: dirMeta.selector,
exportAs: dirMeta.exportAs,
isComponent: isPresent(templateMeta),
dynamicLoadable: true,
type: new cpl.CompileTypeMetadata({ name: stringify(directiveType), moduleUrl: moduleUrl, runtime: directiveType }),
template: templateMeta,
changeDetection: changeDetectionStrategy,
inputs: dirMeta.inputs,
outputs: dirMeta.outputs,
host: dirMeta.host,
lifecycleHooks: LIFECYCLE_HOOKS_VALUES.filter(hook => hasLifecycleHook(hook, directiveType))
});
this._directiveCache.set(directiveType, meta);
}
return meta;
}
getPipeMetadata(pipeType) {
var meta = this._pipeCache.get(pipeType);
if (isBlank(meta)) {
var pipeMeta = this._pipeResolver.resolve(pipeType);
var moduleUrl = reflector.importUri(pipeType);
meta = new cpl.CompilePipeMetadata({
type: new cpl.CompileTypeMetadata({ name: stringify(pipeType), moduleUrl: moduleUrl, runtime: pipeType }),
name: pipeMeta.name,
pure: pipeMeta.pure
});
this._pipeCache.set(pipeType, meta);
}
return meta;
}
getViewDirectivesMetadata(component) {
var view = this._viewResolver.resolve(component);
var directives = flattenDirectives(view, this._platformDirectives);
for (var i = 0; i < directives.length; i++) {
if (!isValidType(directives[i])) {
throw new BaseException(`Unexpected directive value '${stringify(directives[i])}' on the View of component '${stringify(component)}'`);
}
}
return directives.map(type => this.getDirectiveMetadata(type));
}
getViewPipesMetadata(component) {
var view = this._viewResolver.resolve(component);
var pipes = flattenPipes(view, this._platformPipes);
for (var i = 0; i < pipes.length; i++) {
if (!isValidType(pipes[i])) {
throw new BaseException(`Unexpected piped value '${stringify(pipes[i])}' on the View of component '${stringify(component)}'`);
}
}
return pipes.map(type => this.getPipeMetadata(type));
}
};
RuntimeMetadataResolver = __decorate([
Injectable(),
__param(3, Optional()),
__param(3, Inject(PLATFORM_DIRECTIVES)),
__param(4, Optional()),
__param(4, Inject(PLATFORM_PIPES)),
__metadata('design:paramtypes', [DirectiveResolver, PipeResolver, ViewResolver, Array, Array])
], RuntimeMetadataResolver);
function flattenDirectives(view, platformDirectives) {
let directives = [];
if (isPresent(platformDirectives)) {
flattenArray(platformDirectives, directives);
}
if (isPresent(view.directives)) {
flattenArray(view.directives, directives);
}
return directives;
}
function flattenPipes(view, platformPipes) {
let pipes = [];
if (isPresent(platformPipes)) {
flattenArray(platformPipes, pipes);
}
if (isPresent(view.pipes)) {
flattenArray(view.pipes, pipes);
}
return pipes;
}
function flattenArray(tree, out) {
for (var i = 0; i < tree.length; i++) {
var item = resolveForwardRef(tree[i]);
if (isArray(item)) {
flattenArray(item, out);
}
else {
out.push(item);
}
}
}
function isValidType(value) {
return isPresent(value) && (value instanceof Type);
}
function calcModuleUrl(type, cmpMetadata) {
var moduleId = cmpMetadata.moduleId;
if (isPresent(moduleId)) {
var scheme = getUrlScheme(moduleId);
return isPresent(scheme) && scheme.length > 0 ? moduleId :
`package:${moduleId}${MODULE_SUFFIX}`;
}
else {
return reflector.importUri(type);
}
}