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grid.js
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/*! nice Grid 0.2.0
* (c) 2015 Jony Zhang <[email protected]>, MIT Licensed
* https://github.com/niceue/nice-grid
*/
(function($, undefined) {
"use strict";
var NS = "grid",
PREFIX = 'n-',
CLS_NS = '.'+ NS,
CLS_PREFIX = '.'+ PREFIX,
DISABLED = 'disabled',
SELECTED = 'selected',
rTemplate = /{([^\{\}]*)}/,
rSize = /^\d+(?:px)?$/,
isIE = document.documentMode || +(navigator.userAgent.match(/MSIE (\d+)/) && RegExp.$1),
isString = function(s) {
return typeof s === 'string';
},
isObject = function(o) {
return o && Object.prototype.toString.call(o) === '[object Object]';
},
isFunction = $.isFunction,
isArray = $.isArray,
proxy = $.proxy,
trim = $.trim,
defaults = {
theme: "default", //主题（暂未实现）
local: 'zh-CN', //语言环境（暂未实现）
form: null, //绑定表单后，自动提取表单参数
context: null,
autoLoad: true, //如果开启，并且设置了url参数，则自动请求数据并渲染
dataSource: {
url: '',
type: 'get',
dataType: 'json',
cache: false
}, // String | Object
keyMap: {
rows: "rows",
pageSize: "pageSize",
pageIndex: "pageIndex",
sortName: "sortName",
sortOrder: "sortOrder",
records: "records"
},
caption: null, //标题（暂未实现）
columns: [], //列配置：field、title、align、style、className、width、minScreenWidth、locked、
//formatter、editor、editable、sortable、resizable、hidden、values
summary: null, //汇总（暂未实现）
formatters: null, //自定义格式化器
editors: null, //自定义编辑器（暂未实现）
width: "100%", //"auto"、number、"fit"
height: "auto", //"auto"、number、"fit"
keepHeight: true, //保持最后一页高度
pageable: {
pageIndex: 1,
pageSize: 10,
pageSizeOptions: [10,20,30,50],
info: true,
messages: {
first: '首页',
last: '尾页',
prev: '上一页',
next: '下一页'
}
},
selectable: false, // multiple,row,cell // .select(row) 、.select(cell) 、.clearSelection()
scrollable: true, //（暂未实现）
resizable: true, //（暂未实现）是否可拖拽列宽
editable: false, //（暂未实现）inline popup
sortable: false, //（暂未实现）是否可排序
filterable: false, //（暂未实现）
groupable: false, //（暂未实现）
navigatable: false, //（暂未实现）
cellRender: function(value, row, rowIndex) {
return value;
},
onDblclick: null, //双击单元格
onGetData: null, //每次请求回数据
onComplete: null //每次渲染完成
}
/**
*
* @class Grid
* @constructor
*/
function Grid(container, options) {
var me = this, opts;
if (!(me instanceof Grid)) {
return new Grid(container, options);
}
me.$el = $(container);
opts = me.config(options);
if (opts.columns) {
me._init();
}
if (opts.autoLoad) {
me.query();
}
}
Grid.prototype = {
config: function(options) {
var me = this,
MARK = 'bind-grid';
if (options.form) {
me.$form = $(options.form);
if ( me.$form.length ) {
if ( !me.$form.data(MARK) ) {
me.$form.on('submit'+CLS_NS, $.proxy(me, '_submit')).data( MARK, true );
}
} else {
me.$form = null;
}
}
if ( isString(options.dataSource) ) {
options.dataSource = {url: options.dataSource};
}
return me.options = $.extend(true, {}, defaults, options);
},
_init: function() {
var me = this,
opts = me.options,
pageable = opts.pageable;
opts.context = opts.context || opts;
if (opts.width === '100%') {
me.fitWidth = true;
}
me.formatters = new Formatters(opts.formatters, true);
me.editors = new Editors(opts.editors, true);
me.pageIndex = pageable ? pageable.pageIndex : 1;
me._initColumns(opts.columns);
me.$thead = $( me._createThead() );
me.$theadWrap = me.$thead.children();
me.$tbody = $( me._createTbody() );
me.$tbodyWrap = me.$tbody.children();
me.$tfoot = $( me._createTfoot() );
me.tbody = me.$tbody.find('tbody')[0];
me._className = me.$el[0].className;
me.$el.data(NS, me)
.addClass( _className(NS, me.fitWidth && 'fitwidth') )
.append(me.$thead, me.$tbody, me.$tfoot)
// bind events
.on('click'+CLS_NS, CLS_PREFIX+'pager-nav', proxy(me, '_clickPager'));
me.$tbody
.on('scroll'+CLS_NS, proxy(me, '_scrollData'))
.on('dblclick'+CLS_NS, 'td', proxy(me, '_dblclickTD'))
.on('click'+CLS_NS, 'td', proxy(me, '_clickTD'))
.on('click'+CLS_NS, 'a[data-fn]', proxy(me, '_clickFn'));
if (opts.selectable) {
me.$tbody.find('table').addClass(PREFIX+'selectable');
}
me._initSize();
},
_initColumns: function(columns) {
var me = this,
opts = me.options,
headRows = [],
dataCols = [],
callSelf = function (cols, key, next) {
var i = 0, len = cols.length, col;
key = key || 0;
next && key++;
headRows[key] = headRows[key] || [];
for (; i < len; ) {
col = cols[i++];
if (isString(col.formatter)) {
col.render = me.formatters[col.formatter];
}
headRows[key].push(col);
//要计算colspan但不用计算rowspan
if (col.columns) {
col.rowspan = 1;
col.colspan = getColspan(col.columns);
callSelf(col.columns, key, true);
}
}
};
callSelf(columns);
me.headRowCount = headRows.length;
me.headRows = headRows;
me.dataCols = me.headRowCount > 1 ? _mapTree(columns, dataCols, 'columns') : columns;
},
_initSize: function() {
var me = this,
opts = me.options,
isHScroll = me.isHScroll = _isHScroll(me.$theadWrap[0]);
if (rSize.test(opts.width)) {
me.width = parseInt(opts.width);
me.$el.width(opts.width);
me.$tbody.width(me.$thead.width());
}
if (rSize.test(opts.height)) {
me.height = parseInt(opts.height);
me.$el.height(opts.height);
me.$tbody.height( opts.height - me.$thead.outerHeight() - me.$tfoot.outerHeight() );
}
me.$el[ isHScroll ? 'addClass' : 'removeClass' ](PREFIX + 'hscroll');
},
_createThead: function() {
var me = this, html = '',
headRows = me.headRows,
i = 0, rowCount = headRows.length, j, colCount,
row, col, rowspan, colspan;
html += '<div class="'+ PREFIX +'thead"><div class="'+ PREFIX + 'thead-wrap">';
html += '<table role="grid" cellpadding="0" cellspacing="0">';
html += me._createColgroup();
html += '<thead role="rowgroup">';
for (; i < rowCount; i++) {
row = headRows[i];
html += '<tr role="row">';
for (j = 0, colCount = row.length; j < colCount; j++) {
col = row[j];
colspan = col.colspan;
colspan = (colspan && colspan > 1) ? ' colspan=' + colspan : '';
rowspan = col.rowspan || rowCount;
rowspan = (rowspan > 1) ? ' rowspan=' + rowspan : '';
html += '<th role="columnheader" data-index=' + j + (col.field ? ' data-field="'+ col.field : '') +'"';
html += ' class="'+ _className('header', col.align && 'align-'+col.align , colspan && 'colspan', col.sortable && 'sortable', colCount-1===j && 'last') + '"';
if (col.hidden) html += ' style="display:none"';
html += colspan + rowspan + '>' + (col.title || '') + '</th>';
}
html += '</tr>';
}
html += '</thead></table>';
html += '</div></div>';
return html;
},
_createTbody: function() {
var me = this, html = '';
html += '<div class="'+ _className('tbody', 'scrollable') +'"><div class="'+ PREFIX + 'tbody-wrap">';
html += '<table role="grid" cellpadding="0" cellspacing="0">';
html += me._createColgroup();
html += '<tbody role="rowgroup"></tbody></table>';
html += '</div></div>';
return html;
},
_createTfoot: function() {
var me = this,
opts = me.options,
pageable = opts.pageable, messages,
PAGER_NAV = 'pager-nav',
html = '';
if (pageable) {
messages = pageable.messages;
html += '<div class="'+ _className('tfoot', 'pager') +'">';
html += '<a href="javascript:" class="'+ _className(PAGER_NAV, 'pager-first', DISABLED) +'" rel="first" tabindex="-1">'+ messages.first +'</a>';
html += '<a href="javascript:" class="'+ _className(PAGER_NAV, 'pager-prev', DISABLED) +'" rel="prev" tabindex="-1">'+ messages.prev +'</a>';
html += '<span class="'+ _className('pager-numbers') +'">';
html += '<a href="javascript:" class="'+ _className(DISABLED) +'" rel="index" tabindex="-1">1</a>';
html += '</span>';
html += '<a href="javascript:" class="'+ _className(PAGER_NAV, 'pager-next', DISABLED) +'" rel="next" tabindex="-1">'+ messages.next +'</a>';
html += '<a href="javascript:" class="'+ _className(PAGER_NAV, 'pager-last', DISABLED) +'" rel="last" tabindex="-1">'+ messages.last +'</a>';
html += '<span class="'+ _className('pager-sizes') +'"></span>';
html += '<span class="'+ _className('pager-info') +'"></span>';
html += '</div>';
}
return html;
},
_createColgroup: function() {
var me = this, html = '',
dataCols = me.dataCols,
i = 0, len = dataCols.length;
html += '<colgroup>';
for (; i < len; i++) {
html += '<col'+ ( dataCols[i].width ? ' style="width:'+ dataCols[i].width +'px"' : '' ) +'>';
}
html += '</colgroup>';
return html;
},
_createRows: function(rows, start) {
var me = this, opts = me.options,
cols = me.dataCols, style, className, value,
i, j, row, col, rowCount = rows.length, colCount = cols.length,
html = '', STR = '';
if (!rowCount) {
html += '<tr class="'+ _className('last', 'no-data') +'"><td class="'+ _className('last') +'" align="center" colspan="'+ colCount +'">暂无数据</td></tr>'
}
for (i = 0; i < rowCount; i++) {
row = rows[i];
html += '<tr role="row" data-index="'+ (start + i) +'" class="'+ _className((i%2 ? 'even' : 'odd'), rowCount-1===i && 'last') +'">';
for (j = 0; j < colCount; j++ ) {
col = cols[j];
style = col.hidden ? 'display:none;' : STR;
if (col.style) style += col.style;
if (style) style = ' style="' + style + '"';
// className
className = _className(col.align && 'align-'+col.align, colCount-1===j && 'last');
if (col.className) {
className += ' ' + col.className;
}
if (className) className = ' class="' + trim(className) + '"';
// value
if (col.field) {
value = row[col.field];
if (value !== undefined) {
if (col.values) value = col.values[value] || value;
} else {
value = STR;
}
} else {
value = STR;
}
html += '<td role="gridcell"' + className + style + '>';
html += ((col.render || opts.cellRender).call(col, value, row, i ) || ' ') + '</td>';
}
html += '</tr>';
}
return html;
},
_updatePager: function() {
var me = this,
opts = me.options,
pageable = opts.pageable,
pageSatrt, pageEnd, pageTotle, pageIndex,
pagerNumbers = '', pagerInfo = '',
i, len, $pagerNav;
if (!pageable) return;
pageTotle = me.pageTotle = Math.ceil(me.records / pageable.pageSize);
pageIndex = me.pageIndex;
pageSatrt = Math.ceil(pageIndex/5) * 5 - 4;
pageEnd = Math.min(pageSatrt+4, pageTotle || pageSatrt);
if (pageSatrt > 1) {
pagerNumbers += '<a href="javascript:" class="'+ _className('pager-nav', 'pager-more') +'" data-page="'+ (pageSatrt - 1) +'" rel="index" tabindex="-1">...</a>';
}
for (i=pageSatrt; i<=pageEnd; i++) {
pagerNumbers += '<a href="javascript:" class="'+ _className(i===pageIndex ? 'pager-current' : 'pager-nav', !pageTotle&&DISABLED) +'" data-page="'+ i +'" rel="index" tabindex="-1">'+ i +'</a>';
}
if (pageEnd < pageTotle) {
pagerNumbers += '<a href="javascript:" class="'+ _className('pager-nav', 'pager-more') +'" data-page="'+ (pageEnd + 1) +'" rel="index" tabindex="-1">...</a>';
}
// update page numbers
me.$tfoot.find('span'+CLS_PREFIX+'pager-numbers').html(pagerNumbers);
// update page infomation
if (pageable.info) {
if (pageTotle) {
pagerInfo = ((pageIndex-1) * pageable.pageSize + 1) + ' - '+ Math.min(pageIndex * pageable.pageSize, me.records) +' 条，总 '+ me.records +' 条';
}
me.$tfoot.find('span'+CLS_PREFIX+'pager-info').html(pagerInfo);
}
// update page navigation state
$pagerNav = me.$tfoot.children(CLS_PREFIX+'pager-nav').removeClass(PREFIX+DISABLED);
if (pageIndex === 1) {
$pagerNav.slice(0, 2).addClass(PREFIX+DISABLED);
}
if (!pageTotle || pageIndex === pageTotle) {
$pagerNav.slice(-2).addClass(PREFIX+DISABLED);
}
},
_clickPager: function(e) {
var me = this, $a = $(e.currentTarget), index;
e.preventDefault();
if ($a.is(CLS_PREFIX+DISABLED)) {
return;
}
switch ($a.attr('rel')) {
case 'prev':
index = me.pageIndex - 1;
break;
case 'next':
index = me.pageIndex + 1;
break;
case 'first':
index = 1;
break;
case 'last':
index = me.pageTotle;
break;
case 'index':
index = +$a.attr('data-page');
break;
}
me.pageIndex = index;
me.query();
},
/**
* Query data
* @param {Object|String} params
*/
query: function(params) {
var me = this,
opts = me.options,
pageable = opts.pageable,
arr = [],
data = {},
settings = {};
if (me.$xhr || !opts.dataSource) return;
// from cache
if (!params && pageable.local && me.rows) {
me.render();
}
// Local data
else if (isArray(opts.dataSource)) {
if (!me.rows) {
me.rows = opts.dataSource;
me.records = me.rows.length;
pageable.local = true;
}
me.render();
}
// Request data
else {
if (pageable) {
data[me._k('pageIndex')] = me.pageIndex;
data[me._k('pageSize')] = pageable.pageSize;
}
if (isString(opts.dataSource)) {
settings.url = opts.dataSource;
} else {
$.extend(settings, opts.dataSource);
if (isObject(settings.data)) {
$.extend(data, settings.data);
}
}
if (isObject(params)) {
$.extend(data, params);
} else if (isString(params)) {
arr.push(params)
}
arr.push( isString(settings.data) ? settings.data : $.param(data));
if (me.$form) arr.push(me.$form.serialize());
settings.data = arr.join('&');
me.$xhr = $.ajax(settings)
.done(function(d){
var data = isFunction(opts.onGetData) && opts.onGetData.call(me, d) || (!d[me._k('rows')] && d.data ? d.data : d);
me.rows = data[me._k('rows')] || [];
me.records = data[me._k('records')] || me.rows.length;
me.render();
})
.always(function(){
delete me.$xhr;
});
}
},
render: function() {
var me = this,
opts = me.options,
pageable = opts.pageable,
start = 0,
rows = me.rows;
// local paging
if (pageable) {
start = (me.pageIndex - 1) * pageable.pageSize;
if (pageable.local) {
rows = me.rows.slice(start, start + pageable.pageSize);
}
me._updatePager();
}
me.$tbody.find('tbody').html( me._createRows(rows, start) );
if (opts.height === 'auto') {
if (opts.keepHeight) {
me.rowHeight = me.rowHeight || me.$tbody.find('tr').eq(0).outerHeight();
me.$tbodyWrap.css('padding-bottom', me.rowHeight * (pageable.pageSize - (rows.length||1))); //至少会有一行的高度
}
} else {
//可能出现滚动条，要修正一下宽度
setTimeout(function(){
me.$el[ _isVScroll(me.$tbody[0]) ? 'addClass' : 'removeClass' ](PREFIX + 'vscroll');
}, 100);
}
if (isFunction(opts.onComplete)) {
opts.onComplete.call(me);
}
},
_submit: function(e) {
e.preventDefault();
this.pageIndex = 1;
this.query();
},
_scrollData: function(e) {
this.$theadWrap[0].scrollLeft = e.target.scrollLeft;
},
_clickTD: function(e) {
var me = this,
opts = me.options,
selectable = opts.selectable,
isRow, index, lastIndex, CLS = PREFIX + SELECTED,
$tbody = me.$tbody, tr, dblclick,
lastClick = $tbody.lastClick,
el = e.currentTarget, $el;
if (!selectable) return;
$el = $(el);
if (~selectable.indexOf('row')) {
isRow = true;
$el = $el.parent();
}
if (lastClick) {
// dblclcik
if (e.timeStamp - lastClick < 400) {
dblclick = true;
}
}
$tbody.lastClick = e.timeStamp;
if (~selectable.indexOf('multiple')) {
if (e.ctrlKey) {
$el.toggleClass(CLS);
}
else if (e.shiftKey) {
}
else {
$el.addClass(CLS).siblings().removeClass(CLS);
}
} else {
if (dblclick && $el.hasClass(CLS)) return;
$el.toggleClass(CLS).siblings().removeClass(CLS);
}
},
_dblclickTD: function(e) {
var me = this, opts = me.options;
if (isFunction(opts.onDblclick)) {
e.data = me.rows[e.currentTarget.parentNode.getAttribute('data-index')];
opts.onDblclick.call(me, e);
}
},
_clickFn: function(e) {
e.preventDefault();
var me = this,
opts = me.options,
$a = $(e.currentTarget),
fn = $a.attr('data-fn');
if (!opts.context[fn]) return;
if (opts.selectable) e.stopPropagation();
opts.context[fn].call( opts.context, e, me.rows[ $a.closest('tr').attr('data-index') ] );
},
_k: function(key) {
return this.options.keyMap[key];
},
destroy: function() {
var me = this;
me.$tbody.off().remove();
me.$el.off().removeData('grid').html('').removeClass().addClass(me._className);
},
refresh: function() {
this.query();
return this;
},
select: function() {
},
/**
* 获取选中行的数据
* @return {Array} rows
*/
getSelectedRows: function() {
var me = this,
rows = [];
$(me.tbody.rows).filter(CLS_PREFIX+SELECTED).each(function(i, tr){
rows.push(me.rows[tr.getAttribute('data-index')]);
});
return rows;
}
};
function Formatters(obj, context) {
if (!isObject(obj)) return;
var k, that = context ? context === true ? this : context : Formatters.prototype;
for (k in obj) {
that[k] = obj[k];
}
}
function Editors(obj, context) {
if (!isObject(obj)) return;
var k, that = context ? context === true ? this : context : Editors.prototype;
for (k in obj) {
that[k] = obj[k];
}
}
/**
* Expand object arrays
* @param srcArray Source Array
* @param mapArray Map Array
* @param key
*/
function _mapTree(srcArray, mapArray, key) {
var i = 0, len = srcArray.length, col;
for (; i < len; ) {
col = srcArray[i++];
col[key] ? _mapTree(col[key], mapArray, key) : mapArray.push(col);
}
return mapArray;
}
/**
* Calculation colspan
* @param cols
*/
function _getColspan(cols) {
var arr = [];
_mapTree(cols, arr, 'columns');
return arr.length;
}
function _className() {
var args = arguments, i = args.length, arr = [];
while (i--) {
if (args[i]) arr.push(PREFIX + args[i]);
}
return arr.reverse().join(' ');
}
function _isHScroll(el) {
return el.scrollWidth - el.clientWidth !== 0;
}
function _isVScroll(el) {
return el.scrollHeight - el.clientHeight !== 0;
}
new Formatters({
/** currency
* @usage:
formatter: "currency"
*/
currency: function(value) {
var parts = Number(value).toFixed(2).toString().split('.');
return parts[0].replace(/(\d)(?=(\d{3})+(?!\d))/g, '$1,') + '.' + parts[1];
}
});
/** @interface: config
* @usage:
$.grid.config( obj )
*/
Grid.config = function(obj) {
$.each(obj, function(k, o) {
if (k === 'formatters') {
new Formatters(o);
}
else if (k === 'editors') {
new Editors(o);
}
else {
defaults[k] = o;
}
});
};
/* Plugin Method
*
* @param {optional String|Object} options 调用对应的方法|初始化或重载grid
* @return {jqObject}
*/
$.fn.grid = function(options) {
var args = arguments;
return this.each(function () {
var me = $.data(this, 'grid');
if (me) {
switch (typeof options) {
case 'string':
me[options].apply(me, Array.prototype.slice.call(args, 1));
return;
case 'object':
me.config(options);
//传了columns就要重建结构
if (options.columns) {
me.headRowCount && me.destroy(); //生成过需要先移除
me._init();
return;
}
break;
}
me.query();
}
else if (options) {
new Grid(this, options);
}
});
};
return $.grid = Grid;
})(jQuery);