99 lines
2.6 KiB
JavaScript
99 lines
2.6 KiB
JavaScript
define([
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'../../Core/defined',
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'../../Core/defineProperties',
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'../../Core/DeveloperError',
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'../../ThirdParty/knockout',
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'../createCommand'
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], function(
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defined,
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defineProperties,
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DeveloperError,
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knockout,
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createCommand) {
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'use strict';
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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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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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return HomeButtonViewModel;
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});
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