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jquery.switchButton.js
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jquery.switchButton.js
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/**
* jquery.switchButton.js v1.0
* jQuery iPhone-like switch button
* @author Olivier Lance <olivier.lance@sylights.com>
*
* Copyright (c) Olivier Lance - released under MIT License {{{
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
* }}}
*/
/*
* Meant to be used on a <input type="checkbox">, this widget will replace the receiver element with an iPhone-style
* switch button with two states: "on" and "off".
* Labels of the states are customizable, as are their presence and position. The receiver element's "checked" attribute
* is updated according to the state of the switch, so that it can be used in a <form>.
*
*/
(function($) {
$.widget("sylightsUI.switchButton", {
options: {
checked: undefined, // State of the switch
show_labels: true, // Should we show the on and off labels?
labels_placement: "both", // Position of the labels: "both", "left" or "right"
on_label: "ON", // Text to be displayed when checked
off_label: "OFF", // Text to be displayed when unchecked
width: 25, // Width of the button in pixels
height: 11, // Height of the button in pixels
button_width: 12, // Width of the sliding part in pixels
clear: true, // Should we insert a div with style="clear: both;" after the switch button?
clear_after: null, // Override the element after which the clearing div should be inserted (null > right after the button)
on_callback: undefined, //callback function that will be executed after going to on state
off_callback: undefined //callback function that will be executed after going to off state
},
_create: function() {
// Init the switch from the checkbox if no state was specified on creation
if (this.options.checked === undefined) {
this.options.checked = this.element.prop("checked");
}
this._initLayout();
this._initEvents();
},
_initLayout: function() {
// Hide the receiver element
this.element.hide();
// Create our objects: two labels and the button
this.off_label = $("<span>").addClass("switch-button-label");
this.on_label = $("<span>").addClass("switch-button-label");
this.button_bg = $("<div>").addClass("switch-button-background");
this.button = $("<div>").addClass("switch-button-button");
// Insert the objects into the DOM
this.off_label.insertAfter(this.element);
this.button_bg.insertAfter(this.off_label);
this.on_label.insertAfter(this.button_bg);
this.button_bg.append(this.button);
// Insert a clearing element after the specified element if needed
if(this.options.clear)
{
if (this.options.clear_after === null) {
this.options.clear_after = this.on_label;
}
$("<div>").css({
clear: "left"
}).insertAfter(this.options.clear_after);
}
// Call refresh to update labels text and visibility
this._refresh();
// Init labels and switch state
// This will animate all checked switches to the ON position when
// loading... this is intentional!
this.options.checked = !this.options.checked;
this._toggleSwitch(true);
},
_refresh: function() {
// Refresh labels display
if (this.options.show_labels) {
this.off_label.show();
this.on_label.show();
}
else {
this.off_label.hide();
this.on_label.hide();
}
// Move labels around depending on labels_placement option
switch(this.options.labels_placement) {
case "both":
{
// Don't move anything if labels are already in place
if(this.button_bg.prev() !== this.off_label || this.button_bg.next() !== this.on_label)
{
// Detach labels form DOM and place them correctly
this.off_label.detach();
this.on_label.detach();
this.off_label.insertBefore(this.button_bg);
this.on_label.insertAfter(this.button_bg);
// Update label classes
this.on_label.addClass(this.options.checked ? "on" : "off").removeClass(this.options.checked ? "off" : "on");
this.off_label.addClass(this.options.checked ? "off" : "on").removeClass(this.options.checked ? "on" : "off");
}
break;
}
case "left":
{
// Don't move anything if labels are already in place
if(this.button_bg.prev() !== this.on_label || this.on_label.prev() !== this.off_label)
{
// Detach labels form DOM and place them correctly
this.off_label.detach();
this.on_label.detach();
this.off_label.insertBefore(this.button_bg);
this.on_label.insertBefore(this.button_bg);
// update label classes
this.on_label.addClass("on").removeClass("off");
this.off_label.addClass("off").removeClass("on");
}
break;
}
case "right":
{
// Don't move anything if labels are already in place
if(this.button_bg.next() !== this.off_label || this.off_label.next() !== this.on_label)
{
// Detach labels form DOM and place them correctly
this.off_label.detach();
this.on_label.detach();
this.off_label.insertAfter(this.button_bg);
this.on_label.insertAfter(this.off_label);
// update label classes
this.on_label.addClass("on").removeClass("off");
this.off_label.addClass("off").removeClass("on");
}
break;
}
}
// Refresh labels texts
this.on_label.html(this.options.on_label);
this.off_label.html(this.options.off_label);
// Refresh button's dimensions
this.button_bg.width(this.options.width);
this.button_bg.height(this.options.height);
this.button.width(this.options.button_width);
this.button.height(this.options.height);
},
_initEvents: function() {
var self = this;
// Toggle switch when the switch is clicked
this.button_bg.click(function(e) {
e.preventDefault();
e.stopPropagation();
self._toggleSwitch(false);
return false;
});
this.button.click(function(e) {
e.preventDefault();
e.stopPropagation();
self._toggleSwitch(false);
return false;
});
// Set switch value when clicking labels
this.on_label.click(function(e) {
if (self.options.checked && self.options.labels_placement === "both") {
return false;
}
self._toggleSwitch(false);
return false;
});
this.off_label.click(function(e) {
if (!self.options.checked && self.options.labels_placement === "both") {
return false;
}
self._toggleSwitch(false);
return false;
});
},
_setOption: function(key, value) {
if (key === "checked") {
this._setChecked(value);
return;
}
this.options[key] = value;
this._refresh();
},
_setChecked: function(value) {
if (value === this.options.checked) {
return;
}
this.options.checked = !value;
this._toggleSwitch(false);
},
_toggleSwitch: function(isInitializing) {
// Don't toggle the switch if it is set to readonly or disabled, unless it is initializing and animating itself
if( !isInitializing && (this.element.attr('readonly') == 'readonly' || this.element.prop('disabled')) )
return;
this.options.checked = !this.options.checked;
var newLeft = "";
if (this.options.checked) {
// Update the underlying checkbox state
this.element.prop("checked", true);
this.element.change();
var dLeft = this.options.width - this.options.button_width;
newLeft = "+=" + dLeft;
// Update labels states
if(this.options.labels_placement == "both")
{
this.off_label.removeClass("on").addClass("off");
this.on_label.removeClass("off").addClass("on");
}
else
{
this.off_label.hide();
this.on_label.show();
}
this.button_bg.addClass("checked");
//execute on state callback if its supplied
if(typeof this.options.on_callback === 'function') this.options.on_callback.call(this);
}
else {
// Update the underlying checkbox state
this.element.prop("checked", false);
this.element.change();
newLeft = "-1px";
// Update labels states
if(this.options.labels_placement == "both")
{
this.off_label.removeClass("off").addClass("on");
this.on_label.removeClass("on").addClass("off");
}
else
{
this.off_label.show();
this.on_label.hide();
}
this.button_bg.removeClass("checked");
//execute off state callback if its supplied
if(typeof this.options.off_callback === 'function') this.options.off_callback.call(this);
}
// Animate the switch
this.button.animate({ left: newLeft }, 250, "easeInOutCubic");
}
});
})(jQuery);