cesiumDemo/Source/Widgets/SceneModePicker/SceneModePicker.js

import defined from '../../Core/defined.js';
import defineProperties from '../../Core/defineProperties.js';
import destroyObject from '../../Core/destroyObject.js';
import DeveloperError from '../../Core/DeveloperError.js';
import FeatureDetection from '../../Core/FeatureDetection.js';
import knockout from '../../ThirdParty/knockout.js';
import getElement from '../getElement.js';
import SceneModePickerViewModel from './SceneModePickerViewModel.js';

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    /**
     * <img src="Images/sceneModePicker.png" style="float: left; margin-right: 10px;" width="44" height="116" />
     * <p>The SceneModePicker is a single button widget for switching between scene modes;
     * shown to the left in its expanded state. Programatic switching of scene modes will
     * be automatically reflected in the widget as long as the specified Scene
     * is used to perform the change.</p><p style="clear: both;"></p><br/>
     *
     * @alias SceneModePicker
     * @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=2.0] The time, in seconds, it takes for the scene to transition.
     *
     * @exception {DeveloperError} Element with id "container" does not exist in the document.
     *
     * @example
     * // In HTML head, include a link to the SceneModePicker.css stylesheet,
     * // and in the body, include: <div id="sceneModePickerContainer"></div>
     * // Note: This code assumes you already have a Scene instance.
     *
     * var sceneModePicker = new Cesium.SceneModePicker('sceneModePickerContainer', scene);
     */
    function SceneModePicker(container, scene, duration) {
        //>>includeStart('debug', pragmas.debug);
        if (!defined(container)) {
            throw new DeveloperError('container is required.');
        }
        if (!defined(scene)) {
            throw new DeveloperError('scene is required.');
        }
        //>>includeEnd('debug');

        container = getElement(container);

        var viewModel = new SceneModePickerViewModel(scene, duration);

        viewModel._globePath = globePath;
        viewModel._flatMapPath = flatMapPath;
        viewModel._columbusViewPath = columbusViewPath;

        var wrapper = document.createElement('span');
        wrapper.className = 'cesium-sceneModePicker-wrapper cesium-toolbar-button';
        container.appendChild(wrapper);

        var button = document.createElement('button');
        button.type = 'button';
        button.className = 'cesium-button cesium-toolbar-button';
        button.setAttribute('data-bind', '\
css: { "cesium-sceneModePicker-button2D": sceneMode === _sceneMode.SCENE2D,\
       "cesium-sceneModePicker-button3D": sceneMode === _sceneMode.SCENE3D,\
       "cesium-sceneModePicker-buttonColumbusView": sceneMode === _sceneMode.COLUMBUS_VIEW,\
       "cesium-sceneModePicker-selected": dropDownVisible },\
attr: { title: selectedTooltip },\
click: toggleDropDown');
        button.innerHTML = '\
<!-- ko cesiumSvgPath: { path: _globePath, width: 64, height: 64, css: "cesium-sceneModePicker-slide-svg cesium-sceneModePicker-icon3D" } --><!-- /ko -->\
<!-- ko cesiumSvgPath: { path: _flatMapPath, width: 64, height: 64, css: "cesium-sceneModePicker-slide-svg cesium-sceneModePicker-icon2D" } --><!-- /ko -->\
<!-- ko cesiumSvgPath: { path: _columbusViewPath, width: 64, height: 64, css: "cesium-sceneModePicker-slide-svg cesium-sceneModePicker-iconColumbusView" } --><!-- /ko -->';
        wrapper.appendChild(button);

        var morphTo3DButton = document.createElement('button');
        morphTo3DButton.type = 'button';
        morphTo3DButton.className = 'cesium-button cesium-toolbar-button cesium-sceneModePicker-dropDown-icon';
        morphTo3DButton.setAttribute('data-bind', '\
css: { "cesium-sceneModePicker-visible" : (dropDownVisible && (sceneMode !== _sceneMode.SCENE3D)) || (!dropDownVisible && (sceneMode === _sceneMode.SCENE3D)),\
       "cesium-sceneModePicker-none" : sceneMode === _sceneMode.SCENE3D,\
       "cesium-sceneModePicker-hidden" : !dropDownVisible },\
attr: { title: tooltip3D },\
click: morphTo3D,\
cesiumSvgPath: { path: _globePath, width: 64, height: 64 }');
        wrapper.appendChild(morphTo3DButton);

        var morphTo2DButton = document.createElement('button');
        morphTo2DButton.type = 'button';
        morphTo2DButton.className = 'cesium-button cesium-toolbar-button cesium-sceneModePicker-dropDown-icon';
        morphTo2DButton.setAttribute('data-bind', '\
css: { "cesium-sceneModePicker-visible" : (dropDownVisible && (sceneMode !== _sceneMode.SCENE2D)),\
       "cesium-sceneModePicker-none" : sceneMode === _sceneMode.SCENE2D,\
       "cesium-sceneModePicker-hidden" : !dropDownVisible },\
attr: { title: tooltip2D },\
click: morphTo2D,\
cesiumSvgPath: { path: _flatMapPath, width: 64, height: 64 }');
        wrapper.appendChild(morphTo2DButton);

        var morphToCVButton = document.createElement('button');
        morphToCVButton.type = 'button';
        morphToCVButton.className = 'cesium-button cesium-toolbar-button cesium-sceneModePicker-dropDown-icon';
        morphToCVButton.setAttribute('data-bind', '\
css: { "cesium-sceneModePicker-visible" : (dropDownVisible && (sceneMode !== _sceneMode.COLUMBUS_VIEW)) || (!dropDownVisible && (sceneMode === _sceneMode.COLUMBUS_VIEW)),\
       "cesium-sceneModePicker-none" : sceneMode === _sceneMode.COLUMBUS_VIEW,\
       "cesium-sceneModePicker-hidden" : !dropDownVisible},\
attr: { title: tooltipColumbusView },\
click: morphToColumbusView,\
cesiumSvgPath: { path: _columbusViewPath, width: 64, height: 64 }');
        wrapper.appendChild(morphToCVButton);

        knockout.applyBindings(viewModel, wrapper);

        this._viewModel = viewModel;
        this._container = container;
        this._wrapper = wrapper;

        this._closeDropDown = function(e) {
            if (!wrapper.contains(e.target)) {
                viewModel.dropDownVisible = false;
            }
        };
        if (FeatureDetection.supportsPointerEvents()) {
            document.addEventListener('pointerdown', this._closeDropDown, true);
        } else {
            document.addEventListener('mousedown', this._closeDropDown, true);
            document.addEventListener('touchstart', this._closeDropDown, true);
        }
    }

    defineProperties(SceneModePicker.prototype, {
        /**
         * Gets the parent container.
         * @memberof SceneModePicker.prototype
         *
         * @type {Element}
         */
        container : {
            get : function() {
                return this._container;
            }
        },

        /**
         * Gets the view model.
         * @memberof SceneModePicker.prototype
         *
         * @type {SceneModePickerViewModel}
         */
        viewModel : {
            get : function() {
                return this._viewModel;
            }
        }
    });

    /**
     * @returns {Boolean} true if the object has been destroyed, false otherwise.
     */
    SceneModePicker.prototype.isDestroyed = function() {
        return false;
    };

    /**
     * Destroys the widget.  Should be called if permanently
     * removing the widget from layout.
     */
    SceneModePicker.prototype.destroy = function() {
        this._viewModel.destroy();

        if (FeatureDetection.supportsPointerEvents()) {
            document.removeEventListener('pointerdown', this._closeDropDown, true);
        } else {
            document.removeEventListener('mousedown', this._closeDropDown, true);
            document.removeEventListener('touchstart', this._closeDropDown, true);
        }

        knockout.cleanNode(this._wrapper);
        this._container.removeChild(this._wrapper);

        return destroyObject(this);
    };
export default SceneModePicker;