devextreme/ui/radio_group/radio_button.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (ui/radio_group/radio_button.js)
 * Version: 18.1.3
 * Build date: Tue May 15 2018
 *
 * Copyright (c) 2012 - 2018 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
"use strict";
var $ = require("../../core/renderer"),
    eventsEngine = require("../../events/core/events_engine"),
    devices = require("../../core/devices"),
    extend = require("../../core/utils/extend").extend,
    inkRipple = require("../widget/utils.ink_ripple"),
    registerComponent = require("../../core/component_registrator"),
    Editor = require("../editor/editor"),
    eventUtils = require("../../events/utils"),
    themes = require("../themes"),
    clickEvent = require("../../events/click");
var RADIO_BUTTON_CLASS = "dx-radiobutton",
    RADIO_BUTTON_ICON_CLASS = "dx-radiobutton-icon",
    RADIO_BUTTON_ICON_DOT_CLASS = "dx-radiobutton-icon-dot",
    RADIO_BUTTON_CHECKED_CLASS = "dx-radiobutton-checked";
var RadioButton = Editor.inherit({
    _supportedKeys: function() {
        var click = function(e) {
            e.preventDefault();
            this._clickAction({
                event: e
            })
        };
        return extend(this.callBase(), {
            space: click
        })
    },
    _getDefaultOptions: function() {
        return extend(this.callBase(), {
            hoverStateEnabled: true,
            activeStateEnabled: true,
            value: false,
            useInkRipple: false
        })
    },
    _defaultOptionsRules: function() {
        return this.callBase().concat([{
            device: function() {
                return "desktop" === devices.real().deviceType && !devices.isSimulator()
            },
            options: {
                focusStateEnabled: true
            }
        }, {
            device: function() {
                return /android5/.test(themes.current())
            },
            options: {
                useInkRipple: true
            }
        }])
    },
    _init: function() {
        this.callBase();
        this.$element().addClass(RADIO_BUTTON_CLASS)
    },
    _initMarkup: function() {
        this.callBase();
        this._renderIcon();
        this.option("useInkRipple") && this._renderInkRipple();
        this._renderCheckedState(this.option("value"));
        this._renderClick();
        this.setAria("role", "radio")
    },
    _renderInkRipple: function() {
        this._inkRipple = inkRipple.render({
            waveSizeCoefficient: 3.3,
            useHoldAnimation: false,
            wavesNumber: 2,
            isCentered: true
        })
    },
    _renderInkWave: function(element, dxEvent, doRender, waveIndex) {
        if (!this._inkRipple) {
            return
        }
        var config = {
            element: element,
            event: dxEvent,
            wave: waveIndex
        };
        if (doRender) {
            this._inkRipple.showWave(config)
        } else {
            this._inkRipple.hideWave(config)
        }
    },
    _updateFocusState: function(e, value) {
        this.callBase.apply(this, arguments);
        this._renderInkWave(this._$icon, e, value, 0)
    },
    _toggleActiveState: function($element, value, e) {
        this.callBase.apply(this, arguments);
        this._renderInkWave(this._$icon, e, value, 1)
    },
    _renderIcon: function() {
        this._$icon = $("<div>").addClass(RADIO_BUTTON_ICON_CLASS);
        $("<div>").addClass(RADIO_BUTTON_ICON_DOT_CLASS).appendTo(this._$icon);
        this.$element().append(this._$icon)
    },
    _renderCheckedState: function(checked) {
        this.$element().toggleClass(RADIO_BUTTON_CHECKED_CLASS, checked);
        this.setAria("checked", checked)
    },
    _renderClick: function() {
        var eventName = eventUtils.addNamespace(clickEvent.name, this.NAME);
        this._clickAction = this._createAction(function(args) {
            this._clickHandler(args.event)
        }.bind(this));
        eventsEngine.off(this.$element(), eventName);
        eventsEngine.on(this.$element(), eventName, function(e) {
            this._clickAction({
                event: e
            })
        }.bind(this))
    },
    _clickHandler: function(e) {
        this._saveValueChangeEvent(e);
        this.option("value", true)
    },
    _optionChanged: function(args) {
        switch (args.name) {
            case "useInkRipple":
                this._invalidate();
                break;
            case "value":
                this._renderCheckedState(args.value);
                this.callBase(args);
                break;
            default:
                this.callBase(args)
        }
    }
});
registerComponent("dxRadioButton", RadioButton);
module.exports = RadioButton;