angular2/src/render/dom/shadow_dom/shadow_dom_compile_step.map

Angular 2 - a web framework for modern web apps

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{isBlank, isPresent, assertionsEnabled} from 'angular2/src/facade/lang';\nimport {MapWrapper, List, ListWrapper} from 'angular2/src/facade/collection';\nimport {Promise, PromiseWrapper} from 'angular2/src/facade/async';\n\nimport {DOM} from 'angular2/src/dom/dom_adapter';\n\nimport {CompileStep} from '../compiler/compile_step';\nimport {CompileElement} from '../compiler/compile_element';\nimport {CompileControl} from '../compiler/compile_control';\nimport {ViewDefinition} from '../../api';\nimport {ShadowDomStrategy} from './shadow_dom_strategy';\n\nexport class ShadowDomCompileStep extends CompileStep {\n  _shadowDomStrategy: ShadowDomStrategy;\n  _template: ViewDefinition;\n  _subTaskPromises: List<Promise>;\n\n  constructor(shadowDomStrategy: ShadowDomStrategy, template: ViewDefinition, subTaskPromises:List<Promise>) {\n    super();\n    this._shadowDomStrategy = shadowDomStrategy;\n    this._template = template;\n    this._subTaskPromises = subTaskPromises;\n  }\n\n  process(parent:CompileElement, current:CompileElement, control:CompileControl) {\n    var tagName = DOM.tagName(current.element).toUpperCase();\n    if (tagName == 'STYLE') {\n      this._processStyleElement(current, control);\n    } else if (tagName == 'CONTENT') {\n      this._processContentElement(current);\n    } else {\n      var componentId = current.isBound() ? current.inheritedElementBinder.componentId : null;\n      this._shadowDomStrategy.processElement(\n        this._template.componentId, componentId, current.element\n      );\n    }\n  }\n\n  _processStyleElement(current:CompileElement, control:CompileControl) {\n    var stylePromise = this._shadowDomStrategy.processStyleElement(\n      this._template.componentId, this._template.absUrl, current.element\n    );\n    if (isPresent(stylePromise) && PromiseWrapper.isPromise(stylePromise)) {\n      ListWrapper.push(this._subTaskPromises, stylePromise);\n    }\n\n    // Style elements should not be further processed by the compiler, as they can not contain\n    // bindings. Skipping further compiler steps allow speeding up the compilation process.\n    control.ignoreCurrentElement();\n  }\n\n  _processContentElement(current:CompileElement) {\n    if (this._shadowDomStrategy.hasNativeContentElement()) {\n      return;\n    }\n    var attrs = current.attrs();\n    var selector = MapWrapper.get(attrs, 'select');\n    selector = isPresent(selector) ? selector : '';\n\n    var contentStart = DOM.createScriptTag('type', 'ng/contentStart');\n    if (assertionsEnabled()) {\n      DOM.setAttribute(contentStart, 'select', selector);\n    }\n    var contentEnd = DOM.createScriptTag('type', 'ng/contentEnd');\n    DOM.insertBefore(current.element, contentStart);\n    DOM.insertBefore(current.element, contentEnd);\n    DOM.remove(current.element);\n\n    current.element = contentStart;\n    current.bindElement().setContentTagSelector(selector);\n  }\n}\n"]}