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季圣华
368
erp_web/js/easyui-1.3.5/src/jquery.slider.js
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368
erp_web/js/easyui-1.3.5/src/jquery.slider.js
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/**
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* slider - jQuery EasyUI
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*
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* Copyright (c) 2009-2013 www.jeasyui.com. All rights reserved.
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*
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* Licensed under the GPL or commercial licenses
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* To use it on other terms please contact us: info@jeasyui.com
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* http://www.gnu.org/licenses/gpl.txt
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* http://www.jeasyui.com/license_commercial.php
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*
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* Dependencies:
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* draggable
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*
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*/
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(function($){
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function init(target){
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var slider = $('<div class="slider">' +
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'<div class="slider-inner">' +
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'<a href="javascript:void(0)" class="slider-handle"></a>' +
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'<span class="slider-tip"></span>' +
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'</div>' +
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'<div class="slider-rule"></div>' +
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'<div class="slider-rulelabel"></div>' +
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'<div style="clear:both"></div>' +
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'<input type="hidden" class="slider-value">' +
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'</div>').insertAfter(target);
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var t = $(target);
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t.addClass('slider-f').hide();
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var name = t.attr('name');
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if (name){
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slider.find('input.slider-value').attr('name', name);
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t.removeAttr('name').attr('sliderName', name);
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}
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return slider;
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}
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/**
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* set the slider size, for vertical slider, the height property is required
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*/
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function setSize(target, param){
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var state = $.data(target, 'slider');
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var opts = state.options;
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var slider = state.slider;
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if (param){
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if (param.width) opts.width = param.width;
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if (param.height) opts.height = param.height;
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}
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if (opts.mode == 'h'){
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slider.css('height', '');
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slider.children('div').css('height', '');
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if (!isNaN(opts.width)){
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slider.width(opts.width);
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}
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} else {
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slider.css('width', '');
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slider.children('div').css('width', '');
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if (!isNaN(opts.height)){
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slider.height(opts.height);
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slider.find('div.slider-rule').height(opts.height);
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slider.find('div.slider-rulelabel').height(opts.height);
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slider.find('div.slider-inner')._outerHeight(opts.height);
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}
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}
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initValue(target);
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}
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/**
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* show slider rule if needed
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*/
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function showRule(target){
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var state = $.data(target, 'slider');
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var opts = state.options;
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var slider = state.slider;
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var aa = opts.mode == 'h' ? opts.rule : opts.rule.slice(0).reverse();
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if (opts.reversed){
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aa = aa.slice(0).reverse();
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}
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_build(aa);
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function _build(aa){
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var rule = slider.find('div.slider-rule');
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var label = slider.find('div.slider-rulelabel');
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rule.empty();
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label.empty();
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for(var i=0; i<aa.length; i++){
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var distance = i*100/(aa.length-1)+'%';
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var span = $('<span></span>').appendTo(rule);
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span.css((opts.mode=='h'?'left':'top'), distance);
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// show the labels
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if (aa[i] != '|'){
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span = $('<span></span>').appendTo(label);
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span.html(aa[i]);
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if (opts.mode == 'h'){
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span.css({
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left: distance,
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marginLeft: -Math.round(span.outerWidth()/2)
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});
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} else {
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span.css({
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top: distance,
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marginTop: -Math.round(span.outerHeight()/2)
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});
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}
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}
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}
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}
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}
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/**
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* build the slider and set some properties
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*/
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function buildSlider(target){
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var state = $.data(target, 'slider');
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var opts = state.options;
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var slider = state.slider;
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slider.removeClass('slider-h slider-v slider-disabled');
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slider.addClass(opts.mode == 'h' ? 'slider-h' : 'slider-v');
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slider.addClass(opts.disabled ? 'slider-disabled' : '');
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slider.find('a.slider-handle').draggable({
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axis:opts.mode,
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cursor:'pointer',
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disabled: opts.disabled,
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onDrag:function(e){
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var left = e.data.left;
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var width = slider.width();
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if (opts.mode!='h'){
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left = e.data.top;
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width = slider.height();
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}
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if (left < 0 || left > width) {
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return false;
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} else {
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var value = pos2value(target, left);
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adjustValue(value);
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return false;
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}
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},
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onBeforeDrag:function(){
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state.isDragging = true;
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},
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onStartDrag:function(){
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opts.onSlideStart.call(target, opts.value);
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},
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onStopDrag:function(e){
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var value = pos2value(target, (opts.mode=='h'?e.data.left:e.data.top));
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adjustValue(value);
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opts.onSlideEnd.call(target, opts.value);
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opts.onComplete.call(target, opts.value);
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state.isDragging = false;
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}
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});
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slider.find('div.slider-inner').unbind('.slider').bind('mousedown.slider', function(e){
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if (state.isDragging){return}
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var pos = $(this).offset();
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var value = pos2value(target, (opts.mode=='h'?(e.pageX-pos.left):(e.pageY-pos.top)));
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adjustValue(value);
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opts.onComplete.call(target, opts.value);
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});
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function adjustValue(value){
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var s = Math.abs(value % opts.step);
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if (s < opts.step/2){
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value -= s;
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} else {
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value = value - s + opts.step;
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}
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setValue(target, value);
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}
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}
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/**
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* set a specified value to slider
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*/
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function setValue(target, value){
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var state = $.data(target, 'slider');
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var opts = state.options;
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var slider = state.slider;
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var oldValue = opts.value;
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if (value < opts.min) value = opts.min;
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if (value > opts.max) value = opts.max;
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opts.value = value;
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$(target).val(value);
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slider.find('input.slider-value').val(value);
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var pos = value2pos(target, value);
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var tip = slider.find('.slider-tip');
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if (opts.showTip){
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tip.show();
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tip.html(opts.tipFormatter.call(target, opts.value));
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} else {
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tip.hide();
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}
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if (opts.mode == 'h'){
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var style = 'left:'+pos+'px;';
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slider.find('.slider-handle').attr('style', style);
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tip.attr('style', style + 'margin-left:' + (-Math.round(tip.outerWidth()/2)) + 'px');
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} else {
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var style = 'top:' + pos + 'px;';
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slider.find('.slider-handle').attr('style', style);
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tip.attr('style', style + 'margin-left:' + (-Math.round(tip.outerWidth())) + 'px');
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}
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if (oldValue != value){
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opts.onChange.call(target, value, oldValue);
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}
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}
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function initValue(target){
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var opts = $.data(target, 'slider').options;
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var fn = opts.onChange;
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opts.onChange = function(){};
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setValue(target, opts.value);
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opts.onChange = fn;
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}
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/**
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* translate value to slider position
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*/
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function value2pos(target, value){
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var state = $.data(target, 'slider');
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var opts = state.options;
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var slider = state.slider;
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if (opts.mode == 'h'){
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var pos = (value-opts.min)/(opts.max-opts.min)*slider.width();
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if (opts.reversed){
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pos = slider.width() - pos;
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}
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} else {
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var pos = slider.height() - (value-opts.min)/(opts.max-opts.min)*slider.height();
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if (opts.reversed){
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pos = slider.height() - pos;
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}
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}
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return pos.toFixed(0);
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}
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/**
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* translate slider position to value
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*/
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function pos2value(target, pos){
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var state = $.data(target, 'slider');
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var opts = state.options;
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var slider = state.slider;
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if (opts.mode == 'h'){
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var value = opts.min + (opts.max-opts.min)*(pos/slider.width());
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} else {
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var value = opts.min + (opts.max-opts.min)*((slider.height()-pos)/slider.height());
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}
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return opts.reversed ? opts.max - value.toFixed(0) : value.toFixed(0);
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}
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$.fn.slider = function(options, param){
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if (typeof options == 'string'){
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return $.fn.slider.methods[options](this, param);
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}
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options = options || {};
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return this.each(function(){
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var state = $.data(this, 'slider');
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if (state){
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$.extend(state.options, options);
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} else {
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state = $.data(this, 'slider', {
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options: $.extend({}, $.fn.slider.defaults, $.fn.slider.parseOptions(this), options),
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slider: init(this)
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});
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$(this).removeAttr('disabled');
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}
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var opts = state.options;
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opts.min = parseFloat(opts.min);
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opts.max = parseFloat(opts.max);
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opts.value = parseFloat(opts.value);
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opts.step = parseFloat(opts.step);
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opts.originalValue = opts.value;
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buildSlider(this);
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showRule(this);
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setSize(this);
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});
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};
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$.fn.slider.methods = {
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options: function(jq){
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return $.data(jq[0], 'slider').options;
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},
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destroy: function(jq){
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return jq.each(function(){
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$.data(this, 'slider').slider.remove();
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$(this).remove();
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});
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},
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resize: function(jq, param){
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return jq.each(function(){
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setSize(this, param);
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});
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},
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getValue: function(jq){
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return jq.slider('options').value;
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},
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setValue: function(jq, value){
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return jq.each(function(){
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setValue(this, value);
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});
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},
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clear: function(jq){
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return jq.each(function(){
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var opts = $(this).slider('options');
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setValue(this, opts.min);
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});
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},
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reset: function(jq){
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return jq.each(function(){
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var opts = $(this).slider('options');
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setValue(this, opts.originalValue);
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});
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},
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enable: function(jq){
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return jq.each(function(){
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$.data(this, 'slider').options.disabled = false;
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buildSlider(this);
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});
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},
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disable: function(jq){
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return jq.each(function(){
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$.data(this, 'slider').options.disabled = true;
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buildSlider(this);
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});
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}
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};
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$.fn.slider.parseOptions = function(target){
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var t = $(target);
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return $.extend({}, $.parser.parseOptions(target, [
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'width','height','mode',{reversed:'boolean',showTip:'boolean',min:'number',max:'number',step:'number'}
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]), {
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value: (t.val() || undefined),
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disabled: (t.attr('disabled') ? true : undefined),
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rule: (t.attr('rule') ? eval(t.attr('rule')) : undefined)
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});
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};
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$.fn.slider.defaults = {
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width: 'auto',
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height: 'auto',
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mode: 'h', // 'h'(horizontal) or 'v'(vertical)
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reversed: false,
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showTip: false,
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disabled: false,
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value: 0,
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min: 0,
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max: 100,
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step: 1,
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rule: [], // [0,'|',100]
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tipFormatter: function(value){return value},
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onChange: function(value, oldValue){},
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onSlideStart: function(value){},
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onSlideEnd: function(value){},
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onComplete: function(value){}
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};
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})(jQuery);
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