angular2
Version:
Angular 2 - a web framework for modern web apps
78 lines • 12 kB
JavaScript
/**
* Stores error information; delivered via [NgZone.onError] stream.
*/
export class NgZoneError {
constructor(error, stackTrace) {
this.error = error;
this.stackTrace = stackTrace;
}
}
export class NgZoneImpl {
constructor({ trace, onEnter, onLeave, setMicrotask, setMacrotask, onError }) {
this.onEnter = onEnter;
this.onLeave = onLeave;
this.setMicrotask = setMicrotask;
this.setMacrotask = setMacrotask;
this.onError = onError;
if (Zone) {
this.outer = this.inner = Zone.current;
if (Zone['wtfZoneSpec']) {
this.inner = this.inner.fork(Zone['wtfZoneSpec']);
}
if (trace && Zone['longStackTraceZoneSpec']) {
this.inner = this.inner.fork(Zone['longStackTraceZoneSpec']);
}
this.inner = this.inner.fork({
name: 'angular',
properties: { 'isAngularZone': true },
onInvokeTask: (delegate, current, target, task, applyThis, applyArgs) => {
try {
this.onEnter();
return delegate.invokeTask(target, task, applyThis, applyArgs);
}
finally {
this.onLeave();
}
},
onInvoke: (delegate, current, target, callback, applyThis, applyArgs, source) => {
try {
this.onEnter();
return delegate.invoke(target, callback, applyThis, applyArgs, source);
}
finally {
this.onLeave();
}
},
onHasTask: (delegate, current, target, hasTaskState) => {
delegate.hasTask(target, hasTaskState);
if (current == target) {
// We are only interested in hasTask events which originate from our zone
// (A child hasTask event is not interesting to us)
if (hasTaskState.change == 'microTask') {
this.setMicrotask(hasTaskState.microTask);
}
else if (hasTaskState.change == 'macroTask') {
this.setMacrotask(hasTaskState.macroTask);
}
}
},
onHandleError: (delegate, current, target, error) => {
delegate.handleError(target, error);
this.onError(new NgZoneError(error, error.stack));
return false;
}
});
}
else {
throw new Error('Angular2 needs to be run with Zone.js polyfill.');
}
}
static isInAngularZone() { return Zone.current.get('isAngularZone') === true; }
runInner(fn) { return this.inner.run(fn); }
;
runInnerGuarded(fn) { return this.inner.runGuarded(fn); }
;
runOuter(fn) { return this.outer.run(fn); }
;
}
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delivered via [NgZone.onError] stream.\n */\nexport class NgZoneError {\n  constructor(public error: any, public stackTrace: any) {}\n}\n\n\nexport class NgZoneImpl {\n  static isInAngularZone(): boolean { return Zone.current.get('isAngularZone') === true; }\n\n  /** @internal */\n  private outer: Zone;\n  /** @internal */\n  private inner: Zone;\n\n  private onEnter: () => void;\n  private onLeave: () => void;\n  private setMicrotask: (hasMicrotasks: boolean) => void;\n  private setMacrotask: (hasMacrotasks: boolean) => void;\n  private onError: (error: NgZoneError) => void;\n\n  constructor({trace, onEnter, onLeave, setMicrotask, setMacrotask, onError}: {\n    trace: boolean,\n    onEnter: () => void,\n    onLeave: () => void,\n    setMicrotask: (hasMicrotasks: boolean) => void,\n    setMacrotask: (hasMacrotasks: boolean) => void,\n    onError: (error: NgZoneError) => void\n  }) {\n    this.onEnter = onEnter;\n    this.onLeave = onLeave;\n    this.setMicrotask = setMicrotask;\n    this.setMacrotask = setMacrotask;\n    this.onError = onError;\n\n    if (Zone) {\n      this.outer = this.inner = Zone.current;\n      if (Zone['wtfZoneSpec']) {\n        this.inner = this.inner.fork(Zone['wtfZoneSpec']);\n      }\n      if (trace && Zone['longStackTraceZoneSpec']) {\n        this.inner = this.inner.fork(Zone['longStackTraceZoneSpec']);\n      }\n      this.inner = this.inner.fork({\n        name: 'angular',\n        properties:<any>{'isAngularZone': true},\n        onInvokeTask: (delegate: ZoneDelegate, current: Zone, target: Zone, task: Task,\n                       applyThis: any, applyArgs: any): any => {\n          try {\n            this.onEnter();\n            return delegate.invokeTask(target, task, applyThis, applyArgs);\n          } finally {\n            this.onLeave();\n          }\n        },\n\n\n        onInvoke: (delegate: ZoneDelegate, current: Zone, target: Zone, callback: Function,\n                   applyThis: any, applyArgs: any[], source: string): any => {\n          try {\n            this.onEnter();\n            return delegate.invoke(target, callback, applyThis, applyArgs, source);\n          } finally {\n            this.onLeave();\n          }\n        },\n\n        onHasTask:\n            (delegate: ZoneDelegate, current: Zone, target: Zone, hasTaskState: HasTaskState) => {\n              delegate.hasTask(target, hasTaskState);\n              if (current == target) {\n                // We are only interested in hasTask events which originate from our zone\n                // (A child hasTask event is not interesting to us)\n                if (hasTaskState.change == 'microTask') {\n                  this.setMicrotask(hasTaskState.microTask);\n                } else if (hasTaskState.change == 'macroTask') {\n                  this.setMacrotask(hasTaskState.macroTask);\n                }\n              }\n            },\n\n        onHandleError: (delegate: ZoneDelegate, current: Zone, target: Zone, error: any):\n                           boolean => {\n                             delegate.handleError(target, error);\n                             this.onError(new NgZoneError(error, error.stack));\n                             return false;\n                           }\n      });\n    } else {\n      throw new Error('Angular2 needs to be run with Zone.js polyfill.');\n    }\n  }\n\n  runInner(fn: () => any): any { return this.inner.run(fn); };\n  runInnerGuarded(fn: () => any): any { return this.inner.runGuarded(fn); };\n  runOuter(fn: () => any): any { return this.outer.run(fn); };\n}\n"]}