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189 lines (160 loc) · 5.16 KB
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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Injector} from '../di';
import {DebugContext} from '../view/index';
export class EventListener {
constructor(public name: string, public callback: Function) {}
}
/**
* @experimental All debugging apis are currently experimental.
*/
export class DebugNode {
listeners: EventListener[] = [];
parent: DebugElement|null = null;
constructor(public nativeNode: any, parent: DebugNode|null, private _debugContext: DebugContext) {
if (parent && parent instanceof DebugElement) {
parent.addChild(this);
}
}
get injector(): Injector { return this._debugContext.injector; }
get componentInstance(): any { return this._debugContext.component; }
get context(): any { return this._debugContext.context; }
get references(): {[key: string]: any} { return this._debugContext.references; }
get providerTokens(): any[] { return this._debugContext.providerTokens; }
}
/**
* @experimental All debugging apis are currently experimental.
*/
export class DebugElement extends DebugNode {
name !: string;
properties: {[key: string]: any} = {};
attributes: {[key: string]: string | null} = {};
classes: {[key: string]: boolean} = {};
styles: {[key: string]: string | null} = {};
childNodes: DebugNode[] = [];
nativeElement: any;
constructor(nativeNode: any, parent: any, _debugContext: DebugContext) {
super(nativeNode, parent, _debugContext);
this.nativeElement = nativeNode;
}
addChild(child: DebugNode) {
if (child) {
this.childNodes.push(child);
child.parent = this;
}
}
removeChild(child: DebugNode) {
const childIndex = this.childNodes.indexOf(child);
if (childIndex !== -1) {
child.parent = null;
this.childNodes.splice(childIndex, 1);
}
}
insertChildrenAfter(child: DebugNode, newChildren: DebugNode[]) {
const siblingIndex = this.childNodes.indexOf(child);
if (siblingIndex !== -1) {
this.childNodes.splice(siblingIndex + 1, 0, ...newChildren);
newChildren.forEach(c => {
if (c.parent) {
c.parent.removeChild(c);
}
c.parent = this;
});
}
}
insertBefore(refChild: DebugNode, newChild: DebugNode): void {
const refIndex = this.childNodes.indexOf(refChild);
if (refIndex === -1) {
this.addChild(newChild);
} else {
if (newChild.parent) {
newChild.parent.removeChild(newChild);
}
newChild.parent = this;
this.childNodes.splice(refIndex, 0, newChild);
}
}
query(predicate: Predicate<DebugElement>): DebugElement {
const results = this.queryAll(predicate);
return results[0] || null;
}
queryAll(predicate: Predicate<DebugElement>): DebugElement[] {
const matches: DebugElement[] = [];
_queryElementChildren(this, predicate, matches);
return matches;
}
queryAllNodes(predicate: Predicate<DebugNode>): DebugNode[] {
const matches: DebugNode[] = [];
_queryNodeChildren(this, predicate, matches);
return matches;
}
get children(): DebugElement[] {
return this.childNodes.filter((node) => node instanceof DebugElement) as DebugElement[];
}
triggerEventHandler(eventName: string, eventObj: any) {
this.listeners.forEach((listener) => {
if (listener.name == eventName) {
listener.callback(eventObj);
}
});
}
}
/**
* @experimental
*/
export function asNativeElements(debugEls: DebugElement[]): any {
return debugEls.map((el) => el.nativeElement);
}
function _queryElementChildren(
element: DebugElement, predicate: Predicate<DebugElement>, matches: DebugElement[]) {
element.childNodes.forEach(node => {
if (node instanceof DebugElement) {
if (predicate(node)) {
matches.push(node);
}
_queryElementChildren(node, predicate, matches);
}
});
}
function _queryNodeChildren(
parentNode: DebugNode, predicate: Predicate<DebugNode>, matches: DebugNode[]) {
if (parentNode instanceof DebugElement) {
parentNode.childNodes.forEach(node => {
if (predicate(node)) {
matches.push(node);
}
if (node instanceof DebugElement) {
_queryNodeChildren(node, predicate, matches);
}
});
}
}
// Need to keep the nodes in a global Map so that multiple angular apps are supported.
const _nativeNodeToDebugNode = new Map<any, DebugNode>();
/**
* @experimental
*/
export function getDebugNode(nativeNode: any): DebugNode|null {
return _nativeNodeToDebugNode.get(nativeNode) || null;
}
export function getAllDebugNodes(): DebugNode[] {
return Array.from(_nativeNodeToDebugNode.values());
}
export function indexDebugNode(node: DebugNode) {
_nativeNodeToDebugNode.set(node.nativeNode, node);
}
export function removeDebugNodeFromIndex(node: DebugNode) {
_nativeNodeToDebugNode.delete(node.nativeNode);
}
/**
* A boolean-valued function over a value, possibly including context information
* regarding that value's position in an array.
*
* @experimental All debugging apis are currently experimental.
*/
export interface Predicate<T> { (value: T): boolean; }