<!doctype html> <html class="no-js" lang=""> <head> <meta charset="utf-8"> <meta http-equiv="x-ua-compatible" content="ie=edge"> <title>CICADA</title> <meta name="description" content=""> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="icon" type="image/x-icon" href="../images/favicon.ico"> <link rel="stylesheet" href="../styles/style.css"> </head> <body> <div class="navbar navbar-default navbar-fixed-top visible-xs"> <a href="../" class="navbar-brand">CICADA</a> <button type="button" class="btn btn-default btn-menu ion-ios-menu" id="btn-menu"></button> </div> <div class="xs-menu menu" id="mobile-menu"> <div id="book-search-input" role="search"><input type="text" placeholder="Type to search"></div> <compodoc-menu></compodoc-menu> </div> <div class="container-fluid main"> <div class="row main"> <div class="hidden-xs menu"> <compodoc-menu mode="normal"></compodoc-menu> </div> <!-- START CONTENT --> <div class="content injectable"> <div class="content-data"> <ol class="breadcrumb"> <li>Injectables</li> <li>TokenService</li> </ol> <ul class="nav nav-tabs" role="tablist"> <li class="active"> <a href="#info" role="tab" id="info-tab" data-toggle="tab" data-link="info">Info</a> </li> <li > <a href="#source" role="tab" id="source-tab" data-toggle="tab" data-link="source">Source</a> </li> </ul> <div class="tab-content"> <div class="tab-pane fade active in" id="c-info"> <p class="comment"> <h3>File</h3> </p> <p class="comment"> <code>src/app/_services/token.service.ts</code> </p> <section> <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> <a href="#load">load</a> </li> <li> <a href="#registry">registry</a> </li> <li> <a href="#tokenRegistry">tokenRegistry</a> </li> <li> <a href="#tokens">tokens</a> </li> <li> <span class="modifier">Private</span> <a href="#tokensList">tokensList</a> </li> <li> <a href="#tokensSubject">tokensSubject</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="#addToken">addToken</a> </li> <li> <span class="modifier">Async</span> <a href="#getTokenBalance">getTokenBalance</a> </li> <li> <span class="modifier">Async</span> <a href="#getTokenByAddress">getTokenByAddress</a> </li> <li> <span class="modifier">Async</span> <a href="#getTokenBySymbol">getTokenBySymbol</a> </li> <li> <span class="modifier">Async</span> <a href="#getTokenName">getTokenName</a> </li> <li> <span class="modifier">Async</span> <a href="#getTokens">getTokens</a> </li> <li> <span class="modifier">Async</span> <a href="#getTokenSymbol">getTokenSymbol</a> </li> <li> <span class="modifier">Async</span> <a href="#init">init</a> </li> </ul> </td> </tr> </tbody> </table> </section> <section> <h3 id="constructor">Constructor</h3> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <code>constructor()</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="19" class="link-to-prism">src/app/_services/token.service.ts:19</a></div> </td> </tr> </tbody> </table> </section> <section> <h3 id="methods"> Methods </h3> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="addToken"></a> <span class="name"> <b> addToken </b> <a href="#addToken"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <code>addToken(token: <a href="../interfaces/Token.html">Token</a>)</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="31" class="link-to-prism">src/app/_services/token.service.ts:31</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>token</td> <td> <code><a href="../interfaces/Token.html" target="_self" >Token</a></code> </td> <td> No </td> </tr> </tbody> </table> </div> <div> </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> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="getTokenBalance"></a> <span class="name"> <b> <span class="modifier">Async</span> getTokenBalance </b> <a href="#getTokenBalance"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <span class="modifier-icon icon ion-ios-reset"></span> <code>getTokenBalance(address: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank">string</a>)</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="72" class="link-to-prism">src/app/_services/token.service.ts:72</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>address</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> </tbody> </table> </div> <div> </div> <div class="io-description"> <b>Returns : </b> <code>Promise<Promise<number>></code> </div> <div class="io-description"> </div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="getTokenByAddress"></a> <span class="name"> <b> <span class="modifier">Async</span> getTokenByAddress </b> <a href="#getTokenByAddress"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <span class="modifier-icon icon ion-ios-reset"></span> <code>getTokenByAddress(address: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank">string</a>)</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="51" class="link-to-prism">src/app/_services/token.service.ts:51</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>address</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> </tbody> </table> </div> <div> </div> <div class="io-description"> <b>Returns : </b> <code><a href="../interfaces/Token.html" target="_self" >Promise<Token></a></code> </div> <div class="io-description"> </div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="getTokenBySymbol"></a> <span class="name"> <b> <span class="modifier">Async</span> getTokenBySymbol </b> <a href="#getTokenBySymbol"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <span class="modifier-icon icon ion-ios-reset"></span> <code>getTokenBySymbol(symbol: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/string" target="_blank">string</a>)</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="62" class="link-to-prism">src/app/_services/token.service.ts:62</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>symbol</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> </tbody> </table> </div> <div> </div> <div class="io-description"> <b>Returns : </b> <code><a href="../interfaces/Token.html" target="_self" >Promise<Observable<Token>></a></code> </div> <div class="io-description"> </div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="getTokenName"></a> <span class="name"> <b> <span class="modifier">Async</span> getTokenName </b> <a href="#getTokenName"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <span class="modifier-icon icon ion-ios-reset"></span> <code>getTokenName()</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="77" class="link-to-prism">src/app/_services/token.service.ts:77</a></div> </td> </tr> <tr> <td class="col-md-4"> <div class="io-description"> <b>Returns : </b> <code>Promise<string></code> </div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="getTokens"></a> <span class="name"> <b> <span class="modifier">Async</span> getTokens </b> <a href="#getTokens"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <span class="modifier-icon icon ion-ios-reset"></span> <code>getTokens()</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="43" class="link-to-prism">src/app/_services/token.service.ts:43</a></div> </td> </tr> <tr> <td class="col-md-4"> <div class="io-description"> <b>Returns : </b> <code>Promise<void></code> </div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="getTokenSymbol"></a> <span class="name"> <b> <span class="modifier">Async</span> getTokenSymbol </b> <a href="#getTokenSymbol"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <span class="modifier-icon icon ion-ios-reset"></span> <code>getTokenSymbol()</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="82" class="link-to-prism">src/app/_services/token.service.ts:82</a></div> </td> </tr> <tr> <td class="col-md-4"> <div class="io-description"> <b>Returns : </b> <code>Promise<string></code> </div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="init"></a> <span class="name"> <b> <span class="modifier">Async</span> init </b> <a href="#init"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <span class="modifier-icon icon ion-ios-reset"></span> <code>init()</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="23" class="link-to-prism">src/app/_services/token.service.ts:23</a></div> </td> </tr> <tr> <td class="col-md-4"> <div class="io-description"> <b>Returns : </b> <code>Promise<void></code> </div> </td> </tr> </tbody> </table> </section> <section> <h3 id="inputs"> Properties </h3> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="load"></a> <span class="name"> <b> load</b> <a href="#load"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <i>Type : </i> <code>BehaviorSubject<any></code> </td> </tr> <tr> <td class="col-md-4"> <i>Default value : </i><code>new BehaviorSubject<any>(false)</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="19" class="link-to-prism">src/app/_services/token.service.ts:19</a></div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="registry"></a> <span class="name"> <b> registry</b> <a href="#registry"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <i>Type : </i> <code>CICRegistry</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="12" class="link-to-prism">src/app/_services/token.service.ts:12</a></div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="tokenRegistry"></a> <span class="name"> <b> tokenRegistry</b> <a href="#tokenRegistry"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <i>Type : </i> <code><a href="../interfaces/Token.html" target="_self" >TokenRegistry</a></code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="13" class="link-to-prism">src/app/_services/token.service.ts:13</a></div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="tokens"></a> <span class="name"> <b> tokens</b> <a href="#tokens"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <i>Type : </i> <code><a href="../interfaces/Token.html" target="_self" >Array<Token></a></code> </td> </tr> <tr> <td class="col-md-4"> <i>Default value : </i><code>[]</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="14" class="link-to-prism">src/app/_services/token.service.ts:14</a></div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="tokensList"></a> <span class="name"> <b> <span class="modifier">Private</span> tokensList</b> <a href="#tokensList"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <i>Type : </i> <code><a href="../interfaces/Token.html" target="_self" >BehaviorSubject<Array<Token>></a></code> </td> </tr> <tr> <td class="col-md-4"> <i>Default value : </i><code>new BehaviorSubject<Array<Token>>( this.tokens )</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/app/_services/token.service.ts:15</a></div> </td> </tr> </tbody> </table> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="tokensSubject"></a> <span class="name"> <b> tokensSubject</b> <a href="#tokensSubject"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <i>Type : </i> <code><a href="../interfaces/Token.html" target="_self" >Observable<Array<Token>></a></code> </td> </tr> <tr> <td class="col-md-4"> <i>Default value : </i><code>this.tokensList.asObservable()</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="18" class="link-to-prism">src/app/_services/token.service.ts:18</a></div> </td> </tr> </tbody> </table> </section> </div> <div class="tab-pane fade tab-source-code" id="c-source"> <pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import { Injectable } from '@angular/core'; import { CICRegistry } from '@cicnet/cic-client'; import { TokenRegistry } from '@app/_eth'; import { RegistryService } from '@app/_services/registry.service'; import { Token } from '@app/_models'; import { BehaviorSubject, Observable, Subject } from 'rxjs'; @Injectable({ providedIn: 'root', }) export class TokenService { registry: CICRegistry; tokenRegistry: TokenRegistry; tokens: Array<Token> = []; private tokensList: BehaviorSubject<Array<Token>> = new BehaviorSubject<Array<Token>>( this.tokens ); tokensSubject: Observable<Array<Token>> = this.tokensList.asObservable(); load: BehaviorSubject<any> = new BehaviorSubject<any>(false); constructor() {} async init(): Promise<void> { this.registry = await RegistryService.getRegistry(); this.tokenRegistry = new TokenRegistry( await this.registry.getContractAddressByName('TokenRegistry') ); this.load.next(true); } addToken(token: Token): void { const savedIndex = this.tokens.findIndex((tk) => tk.address === token.address); if (savedIndex === 0) { return; } if (savedIndex > 0) { this.tokens.splice(savedIndex, 1); } this.tokens.unshift(token); this.tokensList.next(this.tokens); } async getTokens(): Promise<void> { const count: number = await this.tokenRegistry.totalTokens(); for (let i = 0; i < count; i++) { const token: Token = await this.getTokenByAddress(await this.tokenRegistry.entry(i)); this.addToken(token); } } async getTokenByAddress(address: string): Promise<Token> { const token: any = {}; const tokenContract = await this.registry.addToken(address); token.address = address; token.name = await tokenContract.methods.name().call(); token.symbol = await tokenContract.methods.symbol().call(); token.supply = await tokenContract.methods.totalSupply().call(); token.decimals = await tokenContract.methods.decimals().call(); return token; } async getTokenBySymbol(symbol: string): Promise<Observable<Token>> { const tokenSubject: Subject<Token> = new Subject<Token>(); await this.getTokens(); this.tokensSubject.subscribe((tokens) => { const queriedToken = tokens.find((token) => token.symbol === symbol); tokenSubject.next(queriedToken); }); return tokenSubject.asObservable(); } async getTokenBalance(address: string): Promise<(address: string) => Promise<number>> { const token = await this.registry.addToken(await this.tokenRegistry.entry(0)); return await token.methods.balanceOf(address).call(); } async getTokenName(): Promise<string> { const token = await this.registry.addToken(await this.tokenRegistry.entry(0)); return await token.methods.name().call(); } async getTokenSymbol(): Promise<string> { const token = await this.registry.addToken(await this.tokenRegistry.entry(0)); return await token.methods.symbol().call(); } } </code></pre> </div> </div> </div><div 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