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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 | 1542x 2x 1540x 2x 1538x 2x 1536x 2x 1534x 1534x 1533x 1534x 1534x 1534x 1534x 1534x 1534x 1x 1618x 1528x | import { defined, DeveloperError } from "@cesium/engine";
import knockout from "../ThirdParty/knockout.js";
import createCommand from "../createCommand.js";
/**
* A view model that represents each item in the {@link BaseLayerPicker}.
*
* @alias ProviderViewModel
* @constructor
*
* @param {object} options The object containing all parameters.
* @param {string} options.name The name of the layer.
* @param {string} options.tooltip The tooltip to show when the item is moused over.
* @param {string} options.iconUrl An icon representing the layer.
* @param {string} [options.category] A category for the layer.
* @param {ProviderViewModel.CreationFunction|Command} options.creationFunction A function or Command
* that creates one or more providers which will be added to the globe when this item is selected.
*
* @see BaseLayerPicker
* @see ImageryProvider
* @see TerrainProvider
*/
function ProviderViewModel(options) {
//>>includeStart('debug', pragmas.debug);
if (!defined(options.name)) {
throw new DeveloperError("options.name is required.");
}
if (!defined(options.tooltip)) {
throw new DeveloperError("options.tooltip is required.");
}
if (!defined(options.iconUrl)) {
throw new DeveloperError("options.iconUrl is required.");
}
if (typeof options.creationFunction !== "function") {
throw new DeveloperError("options.creationFunction is required.");
}
//>>includeEnd('debug');
let creationCommand = options.creationFunction;
if (!defined(creationCommand.canExecute)) {
creationCommand = createCommand(creationCommand);
}
this._creationCommand = creationCommand;
/**
* Gets the display name. This property is observable.
* @type {string}
*/
this.name = options.name;
/**
* Gets the tooltip. This property is observable.
* @type {string}
*/
this.tooltip = options.tooltip;
/**
* Gets the icon. This property is observable.
* @type {string}
*/
this.iconUrl = options.iconUrl;
this._category = options.category ?? "";
knockout.track(this, ["name", "tooltip", "iconUrl"]);
}
Object.defineProperties(ProviderViewModel.prototype, {
/**
* Gets the Command that creates one or more providers which will be added to
* the globe when this item is selected.
* @memberof ProviderViewModel.prototype
* @memberof ProviderViewModel.prototype
* @type {Command}
* @readonly
*/
creationCommand: {
get: function () {
return this._creationCommand;
},
},
/**
* Gets the category
* @type {string}
* @memberof ProviderViewModel.prototype
* @readonly
*/
category: {
get: function () {
return this._category;
},
},
});
/**
* A function which creates one or more providers.
* @callback ProviderViewModel.CreationFunction
* @returns {ImageryProvider|TerrainProvider|ImageryProvider[]|TerrainProvider[]|Promise<TerrainProvider>|Promise<ImageryProvider>|Promise<TerrainProvider[]>|Promise<ImageryProvider[]>}
* The ImageryProvider or TerrainProvider, or array of providers, to be added
* to the globe.
*/
export default ProviderViewModel;
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