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<li class="breadcrumb-item">Injectables</li>
<li class="breadcrumb-item" >EventService</li>
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<h3>File</h3>
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<p class="comment">
<code>src/utils/event.service.ts</code>
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<section data-compodoc="block-index">
<h3 id="index">Index</h3>
<table class="table table-sm table-bordered index-table">
<tbody>
<tr>
<td class="col-md-4">
<h6><b>Properties</b></h6>
</td>
</tr>
<tr>
<td class="col-md-4">
<ul class="index-list">
<li>
<span class="modifier">Protected</span>
<a href="#subscriptions" >subscriptions</a>
</li>
<li>
<span class="modifier">Protected</span>
<a href="#targets" >targets</a>
</li>
</ul>
</td>
</tr>
<tr>
<td class="col-md-4">
<h6><b>Methods</b></h6>
</td>
</tr>
<tr>
<td class="col-md-4">
<ul class="index-list">
<li>
<a href="#ngOnDestroy" >ngOnDestroy</a>
</li>
<li>
<a href="#on" >on</a>
</li>
<li>
<a href="#onDocument" >onDocument</a>
</li>
</ul>
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<section data-compodoc="block-constructor">
<h3 id="constructor">Constructor</h3>
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<td class="col-md-4">
<code>constructor(documentService: <a href="../injectables/DocumentService.html" target="_self">DocumentService</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="11" class="link-to-prism">src/utils/event.service.ts:11</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div>
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
</tr>
</thead>
<tbody>
<tr>
<td>documentService</td>
<td>
<code><a href="../injectables/DocumentService.html" target="_self" >DocumentService</a></code>
</td>
<td>
No
</td>
</tr>
</tbody>
</table>
</div>
</td>
</tr>
</tbody>
</table>
</section>
<section data-compodoc="block-methods">
<h3 id="methods">
Methods
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<a name="ngOnDestroy"></a>
<span class="name">
<span ><b>ngOnDestroy</b></span>
<a href="#ngOnDestroy"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<code>ngOnDestroy()</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="34"
class="link-to-prism">src/utils/event.service.ts:34</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description">
<b>Returns : </b> <code><a href="https://www.typescriptlang.org/docs/handbook/basic-types.html" target="_blank" >void</a></code>
</div>
</td>
</tr>
</tbody>
</table>
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<a name="on"></a>
<span class="name">
<span ><b>on</b></span>
<a href="#on"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<code>on(targetElement: HTMLElement | Element, eventType: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank">string</a>, callback: <a href="../undefineds/EventHandler.html" target="_self">EventHandler</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="15"
class="link-to-prism">src/utils/event.service.ts:15</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description">
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
</tr>
</thead>
<tbody>
<tr>
<td>targetElement</td>
<td>
<code>HTMLElement | Element</code>
</td>
<td>
No
</td>
</tr>
<tr>
<td>eventType</td>
<td>
<code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank" >string</a></code>
</td>
<td>
No
</td>
</tr>
<tr>
<td>callback</td>
<td>
<code><a href="../miscellaneous/typealiases.html#EventHandler" target="_self" >EventHandler</a></code>
</td>
<td>
No
</td>
</tr>
</tbody>
</table>
</div>
<div class="io-description">
<b>Returns : </b> <code><a href="https://www.typescriptlang.org/docs/handbook/basic-types.html" target="_blank" >void</a></code>
</div>
<div class="io-description">
</div>
</td>
</tr>
</tbody>
</table>
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<tbody>
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<td class="col-md-4">
<a name="onDocument"></a>
<span class="name">
<span ><b>onDocument</b></span>
<a href="#onDocument"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<code>onDocument(eventType: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank">string</a>, callback: <a href="../undefineds/EventHandler.html" target="_self">EventHandler</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="30"
class="link-to-prism">src/utils/event.service.ts:30</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description">
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
</tr>
</thead>
<tbody>
<tr>
<td>eventType</td>
<td>
<code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank" >string</a></code>
</td>
<td>
No
</td>
</tr>
<tr>
<td>callback</td>
<td>
<code><a href="../miscellaneous/typealiases.html#EventHandler" target="_self" >EventHandler</a></code>
</td>
<td>
No
</td>
</tr>
</tbody>
</table>
</div>
<div class="io-description">
<b>Returns : </b> <code><a href="https://www.typescriptlang.org/docs/handbook/basic-types.html" target="_blank" >void</a></code>
</div>
<div class="io-description">
</div>
</td>
</tr>
</tbody>
</table>
</section>
<section data-compodoc="block-properties">
<h3 id="inputs">
Properties
</h3>
<table class="table table-sm table-bordered">
<tbody>
<tr>
<td class="col-md-4">
<a name="subscriptions"></a>
<span class="name">
<span class="modifier">Protected</span>
<span ><b>subscriptions</b></span>
<a href="#subscriptions"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<i>Default value : </i><code>new Subscription()</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="9" class="link-to-prism">src/utils/event.service.ts:9</a></div>
</td>
</tr>
</tbody>
</table>
<table class="table table-sm table-bordered">
<tbody>
<tr>
<td class="col-md-4">
<a name="targets"></a>
<span class="name">
<span class="modifier">Protected</span>
<span ><b>targets</b></span>
<a href="#targets"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<i>Default value : </i><code>new WeakMap<HTMLElement | Element | Document, Map<string, Observable<Event>>>()</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="11" class="link-to-prism">src/utils/event.service.ts:11</a></div>
</td>
</tr>
</tbody>
</table>
</section>
</div>
<div class="tab-pane fade tab-source-code" id="source">
<pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import { Injectable, OnDestroy } from "@angular/core";
import { Observable, Subscription } from "rxjs";
import { DocumentService } from "./document.service";
import { EventHandler } from "./types";
import { getEventObservable } from "./event-observable";
@Injectable()
export class EventService implements OnDestroy {
protected subscriptions = new Subscription();
protected targets = new WeakMap<HTMLElement | Element | Document, Map<string, Observable<Event>>>();
constructor(protected documentService: DocumentService) {}
on(targetElement: HTMLElement | Element, eventType: string, callback: EventHandler) {
if (!this.targets.has(targetElement)) {
this.targets.set(targetElement, new Map());
}
const eventMap = this.targets.get(targetElement);
if (!eventMap.has(eventType)) {
eventMap.set(eventType, getEventObservable(targetElement, eventType));
}
const subscription = eventMap.get(eventType).subscribe(callback);
this.subscriptions.add(subscription);
}
onDocument(eventType: string, callback: EventHandler) {
this.documentService.handleEvent(eventType, callback);
}
ngOnDestroy() {
this.subscriptions.unsubscribe();
}
}
</code></pre>
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