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<!doctype html> <html lang="en"> <head> <title>Code coverage report for mframejs/binding/property/classPropertyObserver.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="..\..\..\prettify.css" /> <link rel="stylesheet" href="..\..\..\base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(..\..\..\sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="..\..\..\index.html">All files</a> / <a href="index.html">mframejs/binding/property</a> classPropertyObserver.ts </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> <span class="strong">95.52% </span> <span class="quiet">Statements</span> <span class='fraction'>64/67</span> </div> <div class='fl pad1y space-right2'> <span class="strong">100% </span> <span class="quiet">Branches</span> <span class='fraction'>17/17</span> </div> <div class='fl pad1y space-right2'> <span class="strong">100% </span> <span class="quiet">Functions</span> <span class='fraction'>7/7</span> </div> <div class='fl pad1y space-right2'> <span class="strong">95.52% </span> <span class="quiet">Lines</span> <span class='fraction'>64/67</span> </div> </div> <p class="quiet"> Press <em>n</em> or <em>j</em> to go to the next uncovered block, <em>b</em>, <em>p</em> or <em>k</em> for the previous block. </p> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a> <a name='L2'></a><a href='#L2'>2</a> <a name='L3'></a><a href='#L3'>3</a> <a name='L4'></a><a href='#L4'>4</a> <a name='L5'></a><a href='#L5'>5</a> <a name='L6'></a><a href='#L6'>6</a> <a name='L7'></a><a href='#L7'>7</a> <a name='L8'></a><a href='#L8'>8</a> <a name='L9'></a><a href='#L9'>9</a> <a name='L10'></a><a href='#L10'>10</a> <a name='L11'></a><a href='#L11'>11</a> <a name='L12'></a><a href='#L12'>12</a> <a name='L13'></a><a 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cline-neutral">&nbsp;</span> <span class="cline-any cline-yes">93x</span> <span class="cline-any cline-yes">93x</span> <span class="cline-any cline-yes">93x</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-yes">50x</span> <span class="cline-any cline-yes">50x</span> <span class="cline-any cline-yes">50x</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-yes">23x</span> <span class="cline-any cline-yes">23x</span> <span class="cline-any cline-yes">23x</span> <span class="cline-any cline-yes">119x</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> <span class="cline-any cline-neutral">&nbsp;</span> 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let cc2: PropertyObserverHandler; let cc3: PropertyObserverHandler; let cc4: PropertyObserverHandler; let cc5: PropertyObserverHandler; &nbsp; &nbsp; &nbsp; /** * this handles changes on property by using defineProperty, other can then subscibe this to get calls when chnages occur * */ export class ClassPropertyObserver { private _class: Object | any; private key: string; private value: any; private callers: PropertyObserverHandler[]; private c1: PropertyObserverHandler; private c2: PropertyObserverHandler; private c3: PropertyObserverHandler; private c4: PropertyObserverHandler; private c5: PropertyObserverHandler; private setterBind: any; private getterBind: any; &nbsp; &nbsp; constructor(_class: Object, key: string) { this._class = _class; this.key = key; this.setterBind = this.setter.bind(this); this.getterBind = this.getter.bind(this); &nbsp; if (typeof this._class === 'object') { this.value = this._class[this.key]; this.observe(); } } &nbsp; &nbsp; &nbsp; /** * unsubscribe * */ public unsubscribe(caller: PropertyObserverHandler) { if (this.c1 === caller) { this.c1 = null; } if (this.c2 === caller) { this.c2 = null; } if (this.c3 === caller) { this.c3 = null; } if (this.c4 === caller) { this.c4 = null; } if (this.c5 === caller) { this.c5 = null; } &nbsp; if (this.callers &amp;&amp; this.callers.indexOf(caller) !== -1) { this.callers.splice(this.callers.indexOf(caller), 1); } &nbsp; &nbsp; } &nbsp; &nbsp; &nbsp; /** * subscribe * */ public subscribe(caller: PropertyObserverHandler) { if (this.c1 !== caller &amp;&amp; this.c2 !== caller &amp;&amp; this.c3 !== caller &amp;&amp; this.c4 !== caller &amp;&amp; this.c5 !== caller) { if (!this.c1) { this.c1 = caller; } else { if (!this.c2) { this.c2 = caller; } else { if (!this.c3) { this.c3 = caller; } else { if (!this.c4) { this.c4 = caller; } else { if (!this.c5) { this.c5 = caller; } else { if (!this.callers) { this.callers = []; } if (this.callers.indexOf(caller) === -1) { this.callers.push(caller); } &nbsp; } } } } } } } &nbsp; &nbsp; &nbsp; /** * helper for #13 to update something that can be observed like array length * */ public forceUpdate() { if (this.c1) { cc1 = this.c1; this.c1 = undefined; cc1.update(); } &nbsp; if (this.c2) { cc2 = this.c2; this.c2 = undefined; cc2.update(); } &nbsp; if (this.c3) { cc3 = this.c3; this.c3 = undefined; cc3.update(); } &nbsp; if (this.c4) { cc4 = this.c4; this.c4 = undefined; cc4.update(); } &nbsp; if (this.c5) { cc5 = this.c5; this.c5 = undefined; cc5.update(); } &nbsp; if (this.callers &amp;&amp; this.callers.length &gt; 0) { const calls = this.callers.slice(); this.callers = []; for (let i = 0; i &lt; calls.length; i++) { calls[i].update(); } } } &nbsp; &nbsp; &nbsp; /** * observer * */ private observe() { &nbsp; // check if property is on prototype have getter/setter, if se we skip it. const descriptor = Reflect.getOwnPropertyDescriptor(this._class.__proto__, this.key); let oldDescriptor = null; if (descriptor) { oldDescriptor = descriptor.get || descriptor.set; if (oldDescriptor) { <span class="cstat-no" title="statement not covered" > console.warn('skipping dirty observer - no-dirty //todo remove this message');</span> } } &nbsp; if (oldDescriptor === null) { if (!Reflect.defineProperty(this._class, this.key, { configurable: true, enumerable: true, set: this.setterBind, get: this.getterBind })) { <span class="cstat-no" title="statement not covered" > console.warn('This key could not be observed:' + this.key);</span> } } &nbsp; &nbsp; &nbsp; } &nbsp; &nbsp; &nbsp; /** * setter * */ private setter(newValue: any) { if (newValue !== this.value) { if (typeof newValue === 'object') { if (newValue &amp;&amp; newValue.__observer) { newValue.__observer = null; } if (newValue &amp;&amp; newValue.__observerArray) { <span class="cstat-no" title="statement not covered" > newValue.__observerArray = null;</span> } } &nbsp; this.value = newValue; &nbsp; if (this.c1) { cc1 = this.c1; this.c1 = undefined; cc1.update(); } &nbsp; if (this.c2) { cc2 = this.c2; this.c2 = undefined; cc2.update(); } &nbsp; if (this.c3) { cc3 = this.c3; this.c3 = undefined; cc3.update(); } &nbsp; if (this.c4) { cc4 = this.c4; this.c4 = undefined; cc4.update(); } &nbsp; if (this.c5) { cc5 = this.c5; this.c5 = undefined; cc5.update(); } &nbsp; if (this.callers &amp;&amp; this.callers.length &gt; 0) { const calls = this.callers.slice(); this.callers = []; for (let i = 0; i &lt; calls.length; i++) { calls[i].update(); } } } &nbsp; &nbsp; } &nbsp; &nbsp; &nbsp; /** * getter * */ private getter() { return this.value; } &nbsp; &nbsp; } &nbsp;</pre></td></tr> </table></pre> <div class='push'></div><!-- for sticky footer --> </div><!-- /wrapper --> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Sun Feb 24 2019 17:27:50 GMT+0100 (Central European Standard Time) </div> </div> <script src="..\..\..\prettify.js"></script> <script> window.onload = function () 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