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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | 29x 29x 29x 91x 91x 91x 91x 91x 91x 27x 27x 27x 27x 27x 27x 118x 118x 118x 118x 10x 10x 12x 13x 13x 88x 88x 10x 10x 10x 27x | import { ClassArrayObserver } from './classArrayObserver';
import { Cache } from '../../utils/exported';
import { IBindingContext } from '../../interface/exported';
// helper class (its faster this way)
const emptyObject = class {
// nothing
};
/*
* creates a observer for array on class/object
* classRef.__observerArray[this.keyBlock]
*
*/
export class ClassArrayObserverCreator {
private static classRef: any;
private static keyParts: any;
private static keyNo: any;
private static keyBlock: any;
/**
* create
*
*/
public static create(_class: IBindingContext, observerKey: string, caller: any) {
this.classRef = _class && _class.$context;
this.keyParts = Cache.keyMaps.getCreate(observerKey);
this.keyNo = 0;
this.keyBlock = this.keyParts[this.keyNo];
ClassArrayObserverCreator.processKeys(caller);
ClassArrayObserverCreator.clear();
}
/**
* removes the observer
*
*/
public static remove(_class: IBindingContext, observerKey: string, caller: any) {
this.classRef = _class.$context;
this.keyParts = Cache.keyMaps.getCreate(observerKey);
this.keyNo = 0;
this.keyBlock = this.keyParts[this.keyNo];
ClassArrayObserverCreator.removeKeys(caller);
ClassArrayObserverCreator.clear();
}
/**
* clear class
*
*/
private static clear() {
this.classRef = null;
this.keyParts = null;
this.keyNo = null;
this.keyBlock = null;
}
/**
* sets next key
*
*/
private static nextKey() {
this.keyNo++;
this.keyBlock = this.keyParts[this.keyNo];
}
/**
* added oberserver properties to object/class
*
*/
private static processKeys(caller: any) {
// add "__obeserver" prop if it does not exist
if (!this.classRef.__observerArray) {
Object.defineProperty(this.classRef, '__observerArray', {
writable: true,
configurable: true,
value: new emptyObject()
});
}
// create observer
if (!this.classRef.__observerArray[this.keyBlock]) {
this.classRef.__observerArray[this.keyBlock] = new ClassArrayObserver(this.classRef, this.keyBlock);
this.classRef.__observerArray[this.keyBlock].subscribe(caller);
} else {
this.classRef.__observerArray[this.keyBlock].subscribe(caller);
this.classRef.__observerArray[this.keyBlock].observe();
}
// if not next
if (this.keyNo !== this.keyParts.length - 1 && this.keyParts.length > 1) {
if (this.classRef) {
this.classRef = this.classRef[this.keyBlock];
}
this.nextKey();
if (this.classRef) {
this.processKeys(caller);
}
}
}
/**
* removes the caller
*
*/
private static removeKeys(caller: any) {
// unsubescribe
if (this.classRef.__observerArray) {
if (this.classRef.__observerArray[this.keyBlock]) {
this.classRef.__observerArray[this.keyBlock].unsubscribe(caller);
}
}
// if not next
if (this.keyNo !== this.keyParts.length - 1 && this.keyParts.length > 1) {
if (this.classRef) {
this.classRef = this.classRef[this.keyBlock];
}
this.nextKey();
if (this.classRef) {
this.removeKeys(caller);
}
}
}
}
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