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{isPresent} from 'angular2/src/facade/lang';\nimport {List, ListWrapper} from 'angular2/src/facade/collection';\nimport {ChangeDetectorRef} from './change_detector_ref';\nimport {ChangeDetector} from './interfaces';\nimport {CHECK_ALWAYS, CHECK_ONCE, CHECKED, DETACHED, ON_PUSH} from './constants';\n\nexport class AbstractChangeDetector extends ChangeDetector {\n lightDomChildren:List;\n shadowDomChildren:List;\n parent:ChangeDetector;\n mode:string;\n ref:ChangeDetectorRef;\n\n constructor() {\n super();\n this.lightDomChildren = [];\n this.shadowDomChildren = [];\n this.ref = new ChangeDetectorRef(this);\n this.mode = null;\n }\n\n addChild(cd:ChangeDetector) {\n ListWrapper.push(this.lightDomChildren, cd);\n cd.parent = this;\n }\n\n removeChild(cd:ChangeDetector) {\n ListWrapper.remove(this.lightDomChildren, cd);\n }\n\n addShadowDomChild(cd:ChangeDetector) {\n ListWrapper.push(this.shadowDomChildren, cd);\n cd.parent = this;\n }\n\n removeShadowDomChild(cd:ChangeDetector) {\n ListWrapper.remove(this.shadowDomChildren, cd);\n }\n\n remove() {\n this.parent.removeChild(this);\n }\n\n detectChanges() {\n this._detectChanges(false);\n }\n\n checkNoChanges() {\n this._detectChanges(true);\n }\n\n _detectChanges(throwOnChange:boolean) {\n if (this.mode === DETACHED || this.mode === CHECKED) return;\n\n this.detectChangesInRecords(throwOnChange);\n\n this._detectChangesInLightDomChildren(throwOnChange);\n\n this.callOnAllChangesDone();\n\n this._detectChangesInShadowDomChildren(throwOnChange);\n\n if (this.mode === CHECK_ONCE) this.mode = CHECKED;\n }\n\n detectChangesInRecords(throwOnChange:boolean){}\n callOnAllChangesDone(){}\n\n _detectChangesInLightDomChildren(throwOnChange:boolean) {\n var c = this.lightDomChildren;\n for(var i = 0; i < c.length; ++i) {\n c[i]._detectChanges(throwOnChange);\n }\n }\n\n _detectChangesInShadowDomChildren(throwOnChange:boolean) {\n var c = this.shadowDomChildren;\n for(var i = 0; i < c.length; ++i) {\n c[i]._detectChanges(throwOnChange);\n }\n }\n\n markAsCheckOnce() {\n this.mode = CHECK_ONCE;\n }\n\n markPathToRootAsCheckOnce() {\n var c = this;\n while(isPresent(c) && c.mode != DETACHED) {\n if (c.mode === CHECKED) c.mode = CHECK_ONCE;\n c = c.parent;\n }\n }\n}\n"]}