kendo.mobile.switch.js
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/**
* Kendo UI v2016.1.112 (http://www.telerik.com/kendo-ui)
* Copyright 2016 Telerik AD. All rights reserved.
*
* Kendo UI commercial licenses may be obtained at
* http://www.telerik.com/purchase/license-agreement/kendo-ui-complete
* If you do not own a commercial license, this file shall be governed by the trial license terms.
*/
(function (f, define) {
define('kendo.mobile.switch', [
'kendo.fx',
'kendo.userevents'
], f);
}(function () {
var __meta__ = {
id: 'mobile.switch',
name: 'Switch',
category: 'mobile',
description: 'The mobile Switch widget is used to display two exclusive choices.',
depends: [
'fx',
'userevents'
]
};
(function ($, undefined) {
var kendo = window.kendo, ui = kendo.mobile.ui, Widget = ui.Widget, support = kendo.support, CHANGE = 'change', SWITCHON = 'km-switch-on', SWITCHOFF = 'km-switch-off', MARGINLEFT = 'margin-left', ACTIVE_STATE = 'km-state-active', DISABLED_STATE = 'km-state-disabled', DISABLED = 'disabled', TRANSFORMSTYLE = support.transitions.css + 'transform', proxy = $.proxy;
function limitValue(value, minLimit, maxLimit) {
return Math.max(minLimit, Math.min(maxLimit, value));
}
var SWITCH_MARKUP = '<span class="km-switch km-widget"> <span class="km-switch-wrapper"><span class="km-switch-background"></span></span> <span class="km-switch-container"><span class="km-switch-handle" > <span class="km-switch-label-on">{0}</span> <span class="km-switch-label-off">{1}</span> </span> </span>';
var Switch = Widget.extend({
init: function (element, options) {
var that = this, checked;
Widget.fn.init.call(that, element, options);
options = that.options;
that.wrapper = $(kendo.format(SWITCH_MARKUP, options.onLabel, options.offLabel));
that.handle = that.wrapper.find('.km-switch-handle');
that.background = that.wrapper.find('.km-switch-background');
that.wrapper.insertBefore(that.element).prepend(that.element);
that._drag();
that.origin = parseInt(that.background.css(MARGINLEFT), 10);
that.constrain = 0;
that.snapPoint = 0;
element = that.element[0];
element.type = 'checkbox';
that._animateBackground = true;
checked = that.options.checked;
if (checked === null) {
checked = element.checked;
}
that.check(checked);
that.options.enable = that.options.enable && !that.element.attr(DISABLED);
that.enable(that.options.enable);
that.refresh();
kendo.notify(that, kendo.mobile.ui);
},
refresh: function () {
var that = this, handleWidth = that.handle.outerWidth(true);
that.width = that.wrapper.width();
that.constrain = that.width - handleWidth;
that.snapPoint = that.constrain / 2;
if (typeof that.origin != 'number') {
that.origin = parseInt(that.background.css(MARGINLEFT), 10);
}
that.background.data('origin', that.origin);
that.check(that.element[0].checked);
},
events: [CHANGE],
options: {
name: 'Switch',
onLabel: 'on',
offLabel: 'off',
checked: null,
enable: true
},
check: function (check) {
var that = this, element = that.element[0];
if (check === undefined) {
return element.checked;
}
that._position(check ? that.constrain : 0);
element.checked = check;
that.wrapper.toggleClass(SWITCHON, check).toggleClass(SWITCHOFF, !check);
},
value: function () {
return this.check.apply(this, arguments);
},
destroy: function () {
Widget.fn.destroy.call(this);
this.userEvents.destroy();
},
toggle: function () {
var that = this;
that.check(!that.element[0].checked);
},
enable: function (enable) {
var element = this.element, wrapper = this.wrapper;
if (typeof enable == 'undefined') {
enable = true;
}
this.options.enable = enable;
if (enable) {
element.removeAttr(DISABLED);
} else {
element.attr(DISABLED, DISABLED);
}
wrapper.toggleClass(DISABLED_STATE, !enable);
},
_resize: function () {
this.refresh();
},
_move: function (e) {
var that = this;
e.preventDefault();
that._position(limitValue(that.position + e.x.delta, 0, that.width - that.handle.outerWidth(true)));
},
_position: function (position) {
var that = this;
that.position = position;
that.handle.css(TRANSFORMSTYLE, 'translatex(' + position + 'px)');
if (that._animateBackground) {
that.background.css(MARGINLEFT, that.origin + position);
}
},
_start: function () {
if (!this.options.enable) {
this.userEvents.cancel();
} else {
this.userEvents.capture();
this.handle.addClass(ACTIVE_STATE);
}
},
_stop: function () {
var that = this;
that.handle.removeClass(ACTIVE_STATE);
that._toggle(that.position > that.snapPoint);
},
_toggle: function (checked) {
var that = this, handle = that.handle, element = that.element[0], value = element.checked, duration = kendo.mobile.application && kendo.mobile.application.os.wp ? 100 : 200, distance;
that.wrapper.toggleClass(SWITCHON, checked).toggleClass(SWITCHOFF, !checked);
that.position = distance = checked * that.constrain;
if (that._animateBackground) {
that.background.kendoStop(true, true).kendoAnimate({
effects: 'slideMargin',
offset: distance,
reset: true,
reverse: !checked,
axis: 'left',
duration: duration
});
}
handle.kendoStop(true, true).kendoAnimate({
effects: 'slideTo',
duration: duration,
offset: distance + 'px,0',
reset: true,
complete: function () {
if (value !== checked) {
element.checked = checked;
that.trigger(CHANGE, { checked: checked });
}
}
});
},
_drag: function () {
var that = this;
that.userEvents = new kendo.UserEvents(that.wrapper, {
fastTap: true,
tap: function () {
if (that.options.enable) {
that._toggle(!that.element[0].checked);
}
},
start: proxy(that._start, that),
move: proxy(that._move, that),
end: proxy(that._stop, that)
});
}
});
ui.plugin(Switch);
}(window.kendo.jQuery));
return window.kendo;
}, typeof define == 'function' && define.amd ? define : function (a1, a2, a3) {
(a3 || a2)();
}));