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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 | 1x 1x 1x 1x 1x 1x 1x 81x 80x 73x 80x 80x 79x 80x 1x 47148x 1x 19762x 19762x | import Check from "../Core/Check.js";
import defined from "../Core/defined.js";
import destroyObject from "../Core/destroyObject.js";
import DeveloperError from "../Core/DeveloperError.js";
import RuntimeError from "../Core/RuntimeError.js";
/**
* A cache resource.
* <p>
* This type describes an interface and is not intended to be instantiated directly.
* </p>
*
* @alias ResourceLoader
* @constructor
*
* @see ResourceCache
*
* @private
*/
function ResourceLoader() {}
Object.defineProperties(ResourceLoader.prototype, {
/**
* The cache key of the resource.
*
* @memberof ResourceLoader.prototype
*
* @type {string}
* @readonly
* @private
*/
cacheKey: {
// eslint-disable-next-line getter-return
get: function () {
DeveloperError.throwInstantiationError();
},
},
});
/**
* Loads the resource.
* @returns {Promise<ResourceLoader>} A promise which resolves to the loader when the resource loading is completed.
* @private
*/
ResourceLoader.prototype.load = function () {
DeveloperError.throwInstantiationError();
};
/**
* Unloads the resource.
* @private
*/
ResourceLoader.prototype.unload = function () {};
/**
* Processes the resource until it becomes ready.
*
* @param {FrameState} frameState The frame state.
* @returns {boolean} true once all resourced are ready.
* @private
*/
ResourceLoader.prototype.process = function (frameState) {
return false;
};
/**
* Constructs a {@link RuntimeError} from an errorMessage and an error.
*
* @param {string} errorMessage The error message.
* @param {Error} [error] The error.
*
* @returns {RuntimeError} The runtime error.
* @private
*/
ResourceLoader.prototype.getError = function (errorMessage, error) {
//>>includeStart('debug', pragmas.debug);
Check.typeOf.string("errorMessage", errorMessage);
//>>includeEnd('debug');
if (defined(error) && defined(error.message)) {
errorMessage += `\n${error.message}`;
}
const runtimeError = new RuntimeError(errorMessage);
if (defined(error)) {
runtimeError.stack = `Original stack:\n${error.stack}\nHandler stack:\n${runtimeError.stack}`;
}
return runtimeError;
};
/**
* Returns true if this object was destroyed; otherwise, false.
* <br /><br />
* If this object was destroyed, it should not be used; calling any function other than
* <code>isDestroyed</code> will result in a {@link DeveloperError} exception.
*
* @returns {boolean} <code>true</code> if this object was destroyed; otherwise, <code>false</code>.
*
* @see ResourceLoader#destroy
* @private
*/
ResourceLoader.prototype.isDestroyed = function () {
return false;
};
/**
* Destroys the loaded resource.
* <br /><br />
* Once an object is destroyed, it should not be used; calling any function other than
* <code>isDestroyed</code> will result in a {@link DeveloperError} exception. Therefore,
* assign the return value (<code>undefined</code>) to the object as done in the example.
*
* @exception {DeveloperError} This object was destroyed, i.e., destroy() was called.
*
* @example
* resourceLoader = resourceLoader && resourceLoader.destroy();
*
* @see ResourceLoader#isDestroyed
* @private
*/
ResourceLoader.prototype.destroy = function () {
this.unload();
return destroyObject(this);
};
export default ResourceLoader;
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