File size: 2,033 Bytes
b797337 | 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 | class LoadingManager {
constructor( onLoad, onProgress, onError ) {
const scope = this;
let isLoading = false;
let itemsLoaded = 0;
let itemsTotal = 0;
let urlModifier = undefined;
const handlers = [];
// Refer to #5689 for the reason why we don't set .onStart
// in the constructor
this.onStart = undefined;
this.onLoad = onLoad;
this.onProgress = onProgress;
this.onError = onError;
this.itemStart = function ( url ) {
itemsTotal ++;
if ( isLoading === false ) {
if ( scope.onStart !== undefined ) {
scope.onStart( url, itemsLoaded, itemsTotal );
}
}
isLoading = true;
};
this.itemEnd = function ( url ) {
itemsLoaded ++;
if ( scope.onProgress !== undefined ) {
scope.onProgress( url, itemsLoaded, itemsTotal );
}
if ( itemsLoaded === itemsTotal ) {
isLoading = false;
if ( scope.onLoad !== undefined ) {
scope.onLoad();
}
}
};
this.itemError = function ( url ) {
if ( scope.onError !== undefined ) {
scope.onError( url );
}
};
this.resolveURL = function ( url ) {
if ( urlModifier ) {
return urlModifier( url );
}
return url;
};
this.setURLModifier = function ( transform ) {
urlModifier = transform;
return this;
};
this.addHandler = function ( regex, loader ) {
handlers.push( regex, loader );
return this;
};
this.removeHandler = function ( regex ) {
const index = handlers.indexOf( regex );
if ( index !== - 1 ) {
handlers.splice( index, 2 );
}
return this;
};
this.getHandler = function ( file ) {
for ( let i = 0, l = handlers.length; i < l; i += 2 ) {
const regex = handlers[ i ];
const loader = handlers[ i + 1 ];
if ( regex.global ) regex.lastIndex = 0; // see #17920
if ( regex.test( file ) ) {
return loader;
}
}
return null;
};
}
}
const DefaultLoadingManager = /*@__PURE__*/ new LoadingManager();
export { DefaultLoadingManager, LoadingManager };
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