angular2
Version:
Angular 2 - a web framework for modern web apps
161 lines • 23.1 kB
JavaScript
import { isPresent } from 'angular2/src/facade/lang';
import { unimplemented } from 'angular2/src/facade/exceptions';
import { ViewType } from 'angular2/src/core/linker/view';
import { internalView } from 'angular2/src/core/linker/view_ref';
/**
* A DebugElement contains information from the Angular compiler about an
* element and provides access to the corresponding ElementInjector and
* underlying DOM Element, as well as a way to query for children.
*/
export class DebugElement {
get componentInstance() { return unimplemented(); }
;
get nativeElement() { return unimplemented(); }
;
get elementRef() { return unimplemented(); }
;
/**
* Get child DebugElements from within the Light DOM.
*
* @return {DebugElement[]}
*/
get children() { return unimplemented(); }
;
/**
* Get the root DebugElement children of a component. Returns an empty
* list if the current DebugElement is not a component root.
*
* @return {DebugElement[]}
*/
get componentViewChildren() { return unimplemented(); }
;
/**
* Return the first descendant TestElement matching the given predicate
* and scope.
*
* @param {Function: boolean} predicate
* @param {Scope} scope
*
* @return {DebugElement}
*/
query(predicate, scope = Scope.all) {
var results = this.queryAll(predicate, scope);
return results.length > 0 ? results[0] : null;
}
/**
* Return descendant TestElememts matching the given predicate
* and scope.
*
* @param {Function: boolean} predicate
* @param {Scope} scope
*
* @return {DebugElement[]}
*/
queryAll(predicate, scope = Scope.all) {
var elementsInScope = scope(this);
return elementsInScope.filter(predicate);
}
}
export class DebugElement_ extends DebugElement {
constructor(_parentView, _boundElementIndex) {
super();
this._parentView = _parentView;
this._boundElementIndex = _boundElementIndex;
this._elementInjector = this._parentView.elementInjectors[this._boundElementIndex];
}
get componentInstance() {
if (!isPresent(this._elementInjector)) {
return null;
}
return this._elementInjector.getComponent();
}
get nativeElement() { return this.elementRef.nativeElement; }
get elementRef() { return this._parentView.elementRefs[this._boundElementIndex]; }
getDirectiveInstance(directiveIndex) {
return this._elementInjector.getDirectiveAtIndex(directiveIndex);
}
get children() {
return this._getChildElements(this._parentView, this._boundElementIndex);
}
get componentViewChildren() {
var shadowView = this._parentView.getNestedView(this._boundElementIndex);
if (!isPresent(shadowView) || shadowView.proto.type !== ViewType.COMPONENT) {
// The current element is not a component.
return [];
}
return this._getChildElements(shadowView, null);
}
triggerEventHandler(eventName, eventObj) {
this._parentView.triggerEventHandlers(eventName, eventObj, this._boundElementIndex);
}
hasDirective(type) {
if (!isPresent(this._elementInjector)) {
return false;
}
return this._elementInjector.hasDirective(type);
}
inject(type) {
if (!isPresent(this._elementInjector)) {
return null;
}
return this._elementInjector.get(type);
}
getLocal(name) { return this._parentView.locals.get(name); }
/** @internal */
_getChildElements(view, parentBoundElementIndex) {
var els = [];
var parentElementBinder = null;
if (isPresent(parentBoundElementIndex)) {
parentElementBinder = view.proto.elementBinders[parentBoundElementIndex - view.elementOffset];
}
for (var i = 0; i < view.proto.elementBinders.length; ++i) {
var binder = view.proto.elementBinders[i];
if (binder.parent == parentElementBinder) {
els.push(new DebugElement_(view, view.elementOffset + i));
var views = view.viewContainers[view.elementOffset + i];
if (isPresent(views)) {
views.views.forEach((nextView) => { els = els.concat(this._getChildElements(nextView, null)); });
}
}
}
return els;
}
}
/**
* Returns a DebugElement for a ElementRef.
*
* @param {ElementRef}: elementRef
* @return {DebugElement}
*/
export function inspectElement(elementRef) {
return new DebugElement_(internalView(elementRef.parentView), elementRef.boundElementIndex);
}
export function asNativeElements(arr) {
return arr.map((debugEl) => debugEl.nativeElement);
}
export class Scope {
static all(debugElement) {
var scope = [];
scope.push(debugElement);
debugElement.children.forEach(child => scope = scope.concat(Scope.all(child)));
debugElement.componentViewChildren.forEach(child => scope = scope.concat(Scope.all(child)));
return scope;
}
static light(debugElement) {
var scope = [];
debugElement.children.forEach(child => {
scope.push(child);
scope = scope.concat(Scope.light(child));
});
return scope;
}
static view(debugElement) {
var scope = [];
debugElement.componentViewChildren.forEach(child => {
scope.push(child);
scope = scope.concat(Scope.light(child));
});
return scope;
}
}
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{Type, isPresent, isBlank} from 'angular2/src/facade/lang';\nimport {ListWrapper, MapWrapper, Predicate} from 'angular2/src/facade/collection';\nimport {unimplemented} from 'angular2/src/facade/exceptions';\nimport {ElementInjector} from 'angular2/src/core/linker/element_injector';\nimport {AppView, ViewType} from 'angular2/src/core/linker/view';\nimport {internalView} from 'angular2/src/core/linker/view_ref';\nimport {ElementRef, ElementRef_} from 'angular2/src/core/linker/element_ref';\n\n/**\n * A DebugElement contains information from the Angular compiler about an\n * element and provides access to the corresponding ElementInjector and\n * underlying DOM Element, as well as a way to query for children.\n */\nexport abstract class DebugElement {\n  get componentInstance(): any { return unimplemented(); };\n\n  get nativeElement(): any { return unimplemented(); };\n\n  get elementRef(): ElementRef { return unimplemented(); };\n\n  abstract getDirectiveInstance(directiveIndex: number): any;\n\n  /**\n   * Get child DebugElements from within the Light DOM.\n   *\n   * @return {DebugElement[]}\n   */\n  get children(): DebugElement[] { return unimplemented(); };\n\n  /**\n   * Get the root DebugElement children of a component. Returns an empty\n   * list if the current DebugElement is not a component root.\n   *\n   * @return {DebugElement[]}\n   */\n  get componentViewChildren(): DebugElement[] { return unimplemented(); };\n\n  abstract triggerEventHandler(eventName: string, eventObj: Event): void;\n\n  abstract hasDirective(type: Type): boolean;\n\n  abstract inject(type: Type): any;\n\n  abstract getLocal(name: string): any;\n\n  /**\n   * Return the first descendant TestElement matching the given predicate\n   * and scope.\n   *\n   * @param {Function: boolean} predicate\n   * @param {Scope} scope\n   *\n   * @return {DebugElement}\n   */\n  query(predicate: Predicate<DebugElement>, scope: Function = Scope.all): DebugElement {\n    var results = this.queryAll(predicate, scope);\n    return results.length > 0 ? results[0] : null;\n  }\n\n  /**\n   * Return descendant TestElememts matching the given predicate\n   * and scope.\n   *\n   * @param {Function: boolean} predicate\n   * @param {Scope} scope\n   *\n   * @return {DebugElement[]}\n   */\n  queryAll(predicate: Predicate<DebugElement>, scope: Function = Scope.all): DebugElement[] {\n    var elementsInScope: any[] = scope(this);\n\n    return elementsInScope.filter(predicate);\n  }\n}\n\nexport class DebugElement_ extends DebugElement {\n  /** @internal */\n  _elementInjector: ElementInjector;\n\n  constructor(private _parentView: AppView, private _boundElementIndex: number) {\n    super();\n    this._elementInjector = this._parentView.elementInjectors[this._boundElementIndex];\n  }\n\n  get componentInstance(): any {\n    if (!isPresent(this._elementInjector)) {\n      return null;\n    }\n    return this._elementInjector.getComponent();\n  }\n\n  get nativeElement(): any { return this.elementRef.nativeElement; }\n\n  get elementRef(): ElementRef { return this._parentView.elementRefs[this._boundElementIndex]; }\n\n  getDirectiveInstance(directiveIndex: number): any {\n    return this._elementInjector.getDirectiveAtIndex(directiveIndex);\n  }\n\n  get children(): DebugElement[] {\n    return this._getChildElements(this._parentView, this._boundElementIndex);\n  }\n\n  get componentViewChildren(): DebugElement[] {\n    var shadowView = this._parentView.getNestedView(this._boundElementIndex);\n\n    if (!isPresent(shadowView) || shadowView.proto.type !== ViewType.COMPONENT) {\n      // The current element is not a component.\n      return [];\n    }\n\n    return this._getChildElements(shadowView, null);\n  }\n\n  triggerEventHandler(eventName: string, eventObj: Event): void {\n    this._parentView.triggerEventHandlers(eventName, eventObj, this._boundElementIndex);\n  }\n\n  hasDirective(type: Type): boolean {\n    if (!isPresent(this._elementInjector)) {\n      return false;\n    }\n    return this._elementInjector.hasDirective(type);\n  }\n\n  inject(type: Type): any {\n    if (!isPresent(this._elementInjector)) {\n      return null;\n    }\n    return this._elementInjector.get(type);\n  }\n\n  getLocal(name: string): any { return this._parentView.locals.get(name); }\n\n  /** @internal */\n  _getChildElements(view: AppView, parentBoundElementIndex: number): DebugElement[] {\n    var els = [];\n    var parentElementBinder = null;\n    if (isPresent(parentBoundElementIndex)) {\n      parentElementBinder = view.proto.elementBinders[parentBoundElementIndex - view.elementOffset];\n    }\n    for (var i = 0; i < view.proto.elementBinders.length; ++i) {\n      var binder = view.proto.elementBinders[i];\n      if (binder.parent == parentElementBinder) {\n        els.push(new DebugElement_(view, view.elementOffset + i));\n\n        var views = view.viewContainers[view.elementOffset + i];\n        if (isPresent(views)) {\n          views.views.forEach(\n              (nextView) => { els = els.concat(this._getChildElements(nextView, null)); });\n        }\n      }\n    }\n    return els;\n  }\n}\n\n/**\n * Returns a DebugElement for a ElementRef.\n *\n * @param {ElementRef}: elementRef\n * @return {DebugElement}\n */\nexport function inspectElement(elementRef: ElementRef): DebugElement {\n  return new DebugElement_(internalView((<ElementRef_>elementRef).parentView),\n                           (<ElementRef_>elementRef).boundElementIndex);\n}\n\nexport function asNativeElements(arr: DebugElement[]): any[] {\n  return arr.map((debugEl) => debugEl.nativeElement);\n}\n\nexport class Scope {\n  static all(debugElement: DebugElement): DebugElement[] {\n    var scope = [];\n    scope.push(debugElement);\n\n    debugElement.children.forEach(child => scope = scope.concat(Scope.all(child)));\n\n    debugElement.componentViewChildren.forEach(child => scope = scope.concat(Scope.all(child)));\n\n    return scope;\n  }\n  static light(debugElement: DebugElement): DebugElement[] {\n    var scope = [];\n    debugElement.children.forEach(child => {\n      scope.push(child);\n      scope = scope.concat(Scope.light(child));\n    });\n    return scope;\n  }\n\n  static view(debugElement: DebugElement): DebugElement[] {\n    var scope = [];\n\n    debugElement.componentViewChildren.forEach(child => {\n      scope.push(child);\n      scope = scope.concat(Scope.light(child));\n    });\n    return scope;\n  }\n}\n"]}