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445 lines (387 loc) · 13.9 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 {getComponent, getContext, getInjectionTokens, getInjector, getListeners, getLocalRefs, isBrowserEvents, loadLContext, loadLContextFromNode} from '../render3/discovery_utils';
import {TNode} from '../render3/interfaces/node';
import {StylingIndex} from '../render3/interfaces/styling';
import {TVIEW} from '../render3/interfaces/view';
import {getProp, getValue, isClassBasedValue} from '../render3/styling/class_and_style_bindings';
import {getStylingContext} from '../render3/styling/util';
import {assertDomNode} from '../util/assert';
import {DebugContext} from '../view/index';
export class EventListener {
constructor(public name: string, public callback: Function) {}
}
/**
* @publicApi
*/
export interface DebugNode {
readonly listeners: EventListener[];
readonly parent: DebugElement|null;
readonly nativeNode: any;
readonly injector: Injector;
readonly componentInstance: any;
readonly context: any;
readonly references: {[key: string]: any};
readonly providerTokens: any[];
}
export class DebugNode__PRE_R3__ {
readonly listeners: EventListener[] = [];
readonly parent: DebugElement|null = null;
readonly nativeNode: any;
private readonly _debugContext: DebugContext;
constructor(nativeNode: any, parent: DebugNode|null, _debugContext: DebugContext) {
this._debugContext = _debugContext;
this.nativeNode = nativeNode;
if (parent && parent instanceof DebugElement__PRE_R3__) {
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; }
}
/**
* @publicApi
*/
export interface DebugElement extends DebugNode {
readonly name: string;
readonly properties: {[key: string]: any};
readonly attributes: {[key: string]: string | null};
readonly classes: {[key: string]: boolean};
readonly styles: {[key: string]: string | null};
readonly childNodes: DebugNode[];
readonly nativeElement: any;
readonly children: DebugElement[];
query(predicate: Predicate<DebugElement>): DebugElement;
queryAll(predicate: Predicate<DebugElement>): DebugElement[];
queryAllNodes(predicate: Predicate<DebugNode>): DebugNode[];
triggerEventHandler(eventName: string, eventObj: any): void;
}
export class DebugElement__PRE_R3__ extends DebugNode__PRE_R3__ implements DebugElement {
readonly name !: string;
readonly properties: {[key: string]: any} = {};
readonly attributes: {[key: string]: string | null} = {};
readonly classes: {[key: string]: boolean} = {};
readonly styles: {[key: string]: string | null} = {};
readonly childNodes: DebugNode[] = [];
readonly 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 as{parent: DebugNode}).parent = this;
}
}
removeChild(child: DebugNode) {
const childIndex = this.childNodes.indexOf(child);
if (childIndex !== -1) {
(child as{parent: DebugNode | null}).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 as DebugElement__PRE_R3__).removeChild(c);
}
(child as{parent: DebugNode}).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 as DebugElement__PRE_R3__).removeChild(newChild);
}
(newChild as{parent: DebugNode}).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__PRE_R3__) as DebugElement[];
}
triggerEventHandler(eventName: string, eventObj: any) {
this.listeners.forEach((listener) => {
if (listener.name == eventName) {
listener.callback(eventObj);
}
});
}
}
/**
* @publicApi
*/
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__PRE_R3__) {
if (predicate(node)) {
matches.push(node);
}
_queryElementChildren(node, predicate, matches);
}
});
}
function _queryNodeChildren(
parentNode: DebugNode, predicate: Predicate<DebugNode>, matches: DebugNode[]) {
if (parentNode instanceof DebugElement__PRE_R3__) {
parentNode.childNodes.forEach(node => {
if (predicate(node)) {
matches.push(node);
}
if (node instanceof DebugElement__PRE_R3__) {
_queryNodeChildren(node, predicate, matches);
}
});
}
}
function notImplemented(): Error {
throw new Error('Missing proper ivy implementation.');
}
class DebugNode__POST_R3__ implements DebugNode {
readonly nativeNode: Node;
constructor(nativeNode: Node) { this.nativeNode = nativeNode; }
get parent(): DebugElement|null {
const parent = this.nativeNode.parentNode as Element;
return parent ? new DebugElement__POST_R3__(parent) : null;
}
get injector(): Injector { return getInjector(this.nativeNode); }
get componentInstance(): any {
const nativeElement = this.nativeNode;
return nativeElement && getComponent(nativeElement as Element);
}
get context(): any { return getContext(this.nativeNode as Element); }
get listeners(): EventListener[] {
return getListeners(this.nativeNode as Element).filter(isBrowserEvents);
}
get references(): {[key: string]: any;} { return getLocalRefs(this.nativeNode); }
get providerTokens(): any[] { return getInjectionTokens(this.nativeNode as Element); }
}
class DebugElement__POST_R3__ extends DebugNode__POST_R3__ implements DebugElement {
constructor(nativeNode: Element) {
ngDevMode && assertDomNode(nativeNode);
super(nativeNode);
}
get nativeElement(): Element|null {
return this.nativeNode.nodeType == Node.ELEMENT_NODE ? this.nativeNode as Element : null;
}
get name(): string { return this.nativeElement !.nodeName; }
get properties(): {[key: string]: any;} {
const context = loadLContext(this.nativeNode) !;
const lView = context.lView;
const tView = lView[TVIEW];
const tNode = tView.data[context.nodeIndex] as TNode;
const properties = {};
// TODO: https://angular-team.atlassian.net/browse/FW-681
// Missing implementation here...
return properties;
}
get attributes(): {[key: string]: string | null;} {
const attributes: {[key: string]: string | null;} = {};
const element = this.nativeElement;
if (element) {
const eAttrs = element.attributes;
for (let i = 0; i < eAttrs.length; i++) {
const attr = eAttrs[i];
attributes[attr.name] = attr.value;
}
}
return attributes;
}
get classes(): {[key: string]: boolean;} {
const classes: {[key: string]: boolean;} = {};
const element = this.nativeElement;
if (element) {
const lContext = loadLContextFromNode(element);
const lNode = lContext.lView[lContext.nodeIndex];
const stylingContext = getStylingContext(lContext.nodeIndex, lContext.lView);
if (stylingContext) {
for (let i = StylingIndex.SingleStylesStartPosition; i < lNode.length;
i += StylingIndex.Size) {
if (isClassBasedValue(lNode, i)) {
const className = getProp(lNode, i);
const value = getValue(lNode, i);
if (typeof value == 'boolean') {
// we want to ignore `null` since those don't overwrite the values.
classes[className] = value;
}
}
}
} else {
// Fallback, just read DOM.
const eClasses = element.classList;
for (let i = 0; i < eClasses.length; i++) {
classes[eClasses[i]] = true;
}
}
}
return classes;
}
get styles(): {[key: string]: string | null;} {
const styles: {[key: string]: string | null;} = {};
const element = this.nativeElement;
if (element) {
const lContext = loadLContextFromNode(element);
const lNode = lContext.lView[lContext.nodeIndex];
const stylingContext = getStylingContext(lContext.nodeIndex, lContext.lView);
if (stylingContext) {
for (let i = StylingIndex.SingleStylesStartPosition; i < lNode.length;
i += StylingIndex.Size) {
if (!isClassBasedValue(lNode, i)) {
const styleName = getProp(lNode, i);
const value = getValue(lNode, i) as string | null;
if (value !== null) {
// we want to ignore `null` since those don't overwrite the values.
styles[styleName] = value;
}
}
}
} else {
// Fallback, just read DOM.
const eStyles = (element as HTMLElement).style;
for (let i = 0; i < eStyles.length; i++) {
const name = eStyles.item(i);
styles[name] = eStyles.getPropertyValue(name);
}
}
}
return styles;
}
get childNodes(): DebugNode[] {
const childNodes = this.nativeNode.childNodes;
const children: DebugNode[] = [];
for (let i = 0; i < childNodes.length; i++) {
const element = childNodes[i];
children.push(getDebugNode__POST_R3__(element));
}
return children;
}
get children(): DebugElement[] {
const nativeElement = this.nativeElement;
if (!nativeElement) return [];
const childNodes = nativeElement.children;
const children: DebugElement[] = [];
for (let i = 0; i < childNodes.length; i++) {
const element = childNodes[i];
children.push(getDebugNode__POST_R3__(element));
}
return children;
}
query(predicate: Predicate<DebugElement>): DebugElement {
const results = this.queryAll(predicate);
return results[0] || null;
}
queryAll(predicate: Predicate<DebugElement>): DebugElement[] {
const matches: DebugElement[] = [];
_queryNodeChildrenR3(this, predicate, matches, true);
return matches;
}
queryAllNodes(predicate: Predicate<DebugNode>): DebugNode[] {
const matches: DebugNode[] = [];
_queryNodeChildrenR3(this, predicate, matches, false);
return matches;
}
triggerEventHandler(eventName: string, eventObj: any): void {
this.listeners.forEach((listener) => {
if (listener.name === eventName) {
listener.callback(eventObj);
}
});
}
}
function _queryNodeChildrenR3(
parentNode: DebugNode, predicate: Predicate<DebugNode>, matches: DebugNode[],
elementsOnly: boolean) {
if (parentNode instanceof DebugElement__POST_R3__) {
parentNode.childNodes.forEach(node => {
if (predicate(node)) {
matches.push(node);
}
if (node instanceof DebugElement__POST_R3__) {
if (elementsOnly ? node.nativeElement : true) {
_queryNodeChildrenR3(node, predicate, matches, elementsOnly);
}
}
});
}
}
// Need to keep the nodes in a global Map so that multiple angular apps are supported.
const _nativeNodeToDebugNode = new Map<any, DebugNode>();
function getDebugNode__PRE_R3__(nativeNode: any): DebugNode|null {
return _nativeNodeToDebugNode.get(nativeNode) || null;
}
export function getDebugNode__POST_R3__(nativeNode: Element): DebugElement__POST_R3__;
export function getDebugNode__POST_R3__(nativeNode: Node): DebugNode__POST_R3__;
export function getDebugNode__POST_R3__(nativeNode: null): null;
export function getDebugNode__POST_R3__(nativeNode: any): DebugNode|null {
if (nativeNode instanceof Node) {
return nativeNode.nodeType == Node.ELEMENT_NODE ?
new DebugElement__POST_R3__(nativeNode as Element) :
new DebugNode__POST_R3__(nativeNode);
}
return null;
}
/**
* @publicApi
*/
export const getDebugNode: (nativeNode: any) => DebugNode | null = getDebugNode__PRE_R3__;
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.
*
* @publicApi
*/
export interface Predicate<T> { (value: T): boolean; }
/**
* @publicApi
*/
export const DebugNode: {new (...args: any[]): DebugNode} = DebugNode__PRE_R3__ as any;
/**
* @publicApi
*/
export const DebugElement: {new (...args: any[]): DebugElement} = DebugElement__PRE_R3__ as any;