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88 lines
2.1 KiB
JavaScript
88 lines
2.1 KiB
JavaScript
import defined from "../../Core/defined.js";
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import DeveloperError from "../../Core/DeveloperError.js";
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import knockout from "../../ThirdParty/knockout.js";
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import createCommand from "../createCommand.js";
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/**
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* The view model for {@link HomeButton}.
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* @alias HomeButtonViewModel
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* @constructor
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*
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* @param {Scene} scene The scene instance to use.
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* @param {Number} [duration] The duration of the camera flight in seconds.
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*/
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function HomeButtonViewModel(scene, duration) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(scene)) {
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throw new DeveloperError("scene is required.");
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}
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//>>includeEnd('debug');
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this._scene = scene;
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this._duration = duration;
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var that = this;
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this._command = createCommand(function () {
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that._scene.camera.flyHome(that._duration);
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});
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/**
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* Gets or sets the tooltip. This property is observable.
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*
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* @type {String}
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*/
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this.tooltip = "View Home";
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knockout.track(this, ["tooltip"]);
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}
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Object.defineProperties(HomeButtonViewModel.prototype, {
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/**
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* Gets the scene to control.
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* @memberof HomeButtonViewModel.prototype
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*
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* @type {Scene}
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*/
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scene: {
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get: function () {
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return this._scene;
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},
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},
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/**
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* Gets the Command that is executed when the button is clicked.
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* @memberof HomeButtonViewModel.prototype
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*
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* @type {Command}
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*/
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command: {
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get: function () {
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return this._command;
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},
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},
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/**
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* Gets or sets the the duration of the camera flight in seconds.
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* A value of zero causes the camera to instantly switch to home view.
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* The duration will be computed based on the distance when undefined.
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* @memberof HomeButtonViewModel.prototype
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*
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* @type {Number|undefined}
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*/
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duration: {
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get: function () {
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return this._duration;
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},
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set: function (value) {
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//>>includeStart('debug', pragmas.debug);
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if (defined(value) && value < 0) {
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throw new DeveloperError("value must be positive.");
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}
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//>>includeEnd('debug');
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this._duration = value;
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},
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},
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});
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export default HomeButtonViewModel;
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