洪水淹没

guoshilong

2023-02-27 4d8c6dd77427e8e581fda17b6b65ba86bfb7a815

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import knockout from '../../ThirdParty/knockout.js';
import createCommand from '../createCommand.js';
 
    /**
     * The view model for {@link NavigationHelpButton}.
     * @alias NavigationHelpButtonViewModel
     * @constructor
     */
    function NavigationHelpButtonViewModel() {
        /**
         * Gets or sets whether the instructions are currently shown.  This property is observable.
         * @type {Boolean}
         * @default false
        */
        this.showInstructions = false;
 
        var that = this;
        this._command = createCommand(function() {
            that.showInstructions = !that.showInstructions;
        });
        this._showClick = createCommand(function() {
            that._touch = false;
        });
        this._showTouch = createCommand(function() {
            that._touch = true;
        });
 
        this._touch = false;
 
        /**
         * Gets or sets the tooltip.  This property is observable.
         *
         * @type {String}
         */
        this.tooltip = 'Navigation Instructions';
 
        knockout.track(this, ['tooltip', 'showInstructions', '_touch']);
    }
 
    Object.defineProperties(NavigationHelpButtonViewModel.prototype, {
        /**
         * Gets the Command that is executed when the button is clicked.
         * @memberof NavigationHelpButtonViewModel.prototype
         *
         * @type {Command}
         */
        command : {
            get : function() {
                return this._command;
            }
        },
 
        /**
         * Gets the Command that is executed when the mouse instructions should be shown.
         * @memberof NavigationHelpButtonViewModel.prototype
         *
         * @type {Command}
         */
        showClick : {
            get : function() {
                return this._showClick;
            }
        },
 
        /**
         * Gets the Command that is executed when the touch instructions should be shown.
         * @memberof NavigationHelpButtonViewModel.prototype
         *
         * @type {Command}
         */
        showTouch : {
            get: function() {
                return this._showTouch;
            }
        }
    });
export default NavigationHelpButtonViewModel;