e80df919
 atao
init
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/* ==============================================================================
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
;(function ($) {
$.fn.spinner = function (opts) {
return this.each(function () {
var defaults = {value:1, min:0}
var options = $.extend(defaults, opts)
var keyCodes = {up:38, down:40}
var container = $('<div></div>')
container.addClass('spinner')
var textField = $(this).addClass('value').attr('maxlength', '2').val(options.value)
.bind('keyup paste change', function (e) {
var field = $(this)
if (e.keyCode == keyCodes.up) changeValue(1)
else if (e.keyCode == keyCodes.down) changeValue(-1)
else if (getValue(field) != container.data('lastValidValue')) validateAndTrigger(field)
})
textField.wrap(container)
var increaseButton = $('<button class="increase">+</button>').click(function () { changeValue(1) })
var decreaseButton = $('<button class="decrease">-</button>').click(function () { changeValue(-1) })
validate(textField)
container.data('lastValidValue', options.value)
textField.before(decreaseButton)
textField.after(increaseButton)
function changeValue(delta) {
textField.val(getValue() + delta)
validateAndTrigger(textField)
}
function validateAndTrigger(field) {
clearTimeout(container.data('timeout'))
var value = validate(field)
if (!isInvalid(value)) {
textField.trigger('update', [field, value])
}
}
function validate(field) {
var value = getValue()
if (value <= options.min) decreaseButton.attr('disabled', 'disabled')
else decreaseButton.removeAttr('disabled')
field.toggleClass('invalid', isInvalid(value)).toggleClass('passive', value === 0)
if (isInvalid(value)) {
var timeout = setTimeout(function () {
textField.val(container.data('lastValidValue'))
validate(field)
}, 500)
container.data('timeout', timeout)
} else {
container.data('lastValidValue', value)
}
return value
}
function isInvalid(value) { return isNaN(+value) || value < options.min; }
function getValue(field) {
field = field || textField;
return parseInt(field.val() || 0, 10)
}
})
}
})(jQuery)
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