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HomeButton.js
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HomeButton.js
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/*global define*/
define([
'../../Core/defined',
'../../Core/defineProperties',
'../../Core/destroyObject',
'../../Core/DeveloperError',
'../../ThirdParty/knockout',
'../getElement',
'./HomeButtonViewModel'
], function(
defined,
defineProperties,
destroyObject,
DeveloperError,
knockout,
getElement,
HomeButtonViewModel) {
"use strict";
/**
* A single button widget for returning to the default camera view of the current scene.
*
* @alias HomeButton
* @constructor
*
* @param {Element|String} container The DOM element or ID that will contain the widget.
* @param {Scene} scene The Scene instance to use.
* @param {Number} [duration] The time, in seconds, it takes to complete the camera flight home.
*/
var HomeButton = function(container, scene, duration) {
//>>includeStart('debug', pragmas.debug);
if (!defined(container)) {
throw new DeveloperError('container is required.');
}
//>>includeEnd('debug');
container = getElement(container);
var viewModel = new HomeButtonViewModel(scene, duration);
viewModel._svgPath = 'M14,4l-10,8.75h20l-4.25-3.7188v-4.6562h-2.812v2.1875l-2.938-2.5625zm-7.0938,9.906v10.094h14.094v-10.094h-14.094zm2.1876,2.313h3.3122v4.25h-3.3122v-4.25zm5.8442,1.281h3.406v6.438h-3.406v-6.438z';
var element = document.createElement('button');
element.type = 'button';
element.className = 'cesium-button cesium-toolbar-button cesium-home-button';
element.setAttribute('data-bind', '\
attr: { title: tooltip },\
click: command,\
cesiumSvgPath: { path: _svgPath, width: 28, height: 28 }');
container.appendChild(element);
knockout.applyBindings(viewModel, element);
this._container = container;
this._viewModel = viewModel;
this._element = element;
};
defineProperties(HomeButton.prototype, {
/**
* Gets the parent container.
* @memberof HomeButton.prototype
*
* @type {Element}
*/
container : {
get : function() {
return this._container;
}
},
/**
* Gets the view model.
* @memberof HomeButton.prototype
*
* @type {HomeButtonViewModel}
*/
viewModel : {
get : function() {
return this._viewModel;
}
}
});
/**
* @returns {Boolean} true if the object has been destroyed, false otherwise.
*/
HomeButton.prototype.isDestroyed = function() {
return false;
};
/**
* Destroys the widget. Should be called if permanently
* removing the widget from layout.
*/
HomeButton.prototype.destroy = function() {
knockout.cleanNode(this._element);
this._container.removeChild(this._element);
return destroyObject(this);
};
return HomeButton;
});