需要导入
colResizable-1.6.min.js
/**
_ _____ _ _ _
| | __ \ (_) | | | |
___ ___ | | |__) |___ ___ _ ______ _| |__ | | ___
/ __/ _ \| | _ // _ \/ __| |_ / _` | '_ \| |/ _ \
| (_| (_) | | | \ \ __/\__ \ |/ / (_| | |_) | | __/
\___\___/|_|_| \_\___||___/_/___\__,_|_.__/|_|\___|
v1.6 - jQuery plugin created by Alvaro Prieto Lauroba
Licences: MIT & GPL
Feel free to use or modify this plugin as far as my full name is kept
If you are going to use this plug-in in production environments it is
strongly recommended to use its minified version: colResizable.min.js
*/
(function($){
var d = $(document); //window object
var h = $("head"); //head object
var drag = null; //reference to the current grip that is being dragged
var tables = {}; //object of the already processed tables (table.id as key)
var count = 0; //internal count to create unique IDs when needed.
//common strings for packing
var ID = "id";
var PX = "px";
var SIGNATURE ="JColResizer";
var FLEX = "JCLRFlex";
//short-cuts
var I = parseInt;
var M = Math;
var ie = navigator.userAgent.indexOf('Trident/4.0')>0;
var S;
try{S = sessionStorage;}catch(e){} //Firefox crashes when executed as local file system
//append required CSS rules
h.append("<style type='text/css'> .JColResizer{table-layout:fixed;} .JColResizer > tbody > tr > td, .JColResizer > tbody > tr > th{overflow:hidden;padding-left:0!important; padding-right:0!important;} .JCLRgrips{ height:0px; position:relative;} .JCLRgrip{margin-left:-5px; position:absolute; z-index:5; } .JCLRgrip .JColResizer{position:absolute;background-color:red;filter:alpha(opacity=1);opacity:0;width:10px;height:100%;cursor: e-resize;top:0px} .JCLRLastGrip{position:absolute; width:1px; } .JCLRgripDrag{ border-left:1px dotted black; } .JCLRFlex{width:auto!important;} .JCLRgrip.JCLRdisabledGrip .JColResizer{cursor:default; display:none;}</style>");
/**
* Function to allow column resizing for table objects. It is the starting point to apply the plugin.
* @param {DOM node} tb - reference to the DOM table object to be enhanced
* @param {Object} options - some customization values
*/
var init = function( tb, options){
var t = $(tb); //the table object is wrapped
t.opt = options; //each table has its own options available at anytime
t.mode = options.resizeMode; //shortcuts
t.dc = t.opt.disabledColumns;
if(t.opt.disable) return destroy(t); //the user is asking to destroy a previously colResized table
var id = t.id = t.attr(ID) || SIGNATURE+count++; //its id is obtained, if null new one is generated
t.p = t.opt.postbackSafe; //short-cut to detect postback safe
if(!t.is("table") || tables[id] && !t.opt.partialRefresh) return; //if the object is not a table or if it was already processed then it is ignored.
if (t.opt.hoverCursor !== 'e-resize') h.append("<style type='text/css'>.JCLRgrip .JColResizer:hover{cursor:"+ t.opt.hoverCursor +"!important}</style>"); //if hoverCursor has been set, append the style
t.addClass(SIGNATURE).attr(ID, id).before('<div class="JCLRgrips"/>'); //the grips container object is added. Signature class forces table rendering in fixed-layout mode to prevent column's min-width
t.g = []; t.c = []; t.w = t.width(); t.gc = t.prev(); t.f=t.opt.fixed; //t.c and t.g are arrays of columns and grips respectively
if(options.marginLeft) t.gc.css("marginLeft", options.marginLeft); //if the table contains margins, it must be specified
if(options.marginRight) t.gc.css("marginRight", options.marginRight); //since there is no (direct) way to obtain margin values in its original units (%, em, ...)
t.cs = I(ie? tb.cellSpacing || tb.currentStyle.borderSpacing :t.css('border-spacing'))||2; //table cellspacing (not even jQuery is fully cross-browser)
t.b = I(ie? tb.border || tb.currentStyle.borderLeftWidth :t.css('border-left-width'))||1; //outer border width (again cross-browser issues)
// if(!(tb.style.width || tb.width)) t.width(t.width()); //I am not an IE fan at all, but it is a pity that only IE has the currentStyle attribute working as expected. For this reason I can not check easily if the table has an explicit width or if it is rendered as "auto"
tables[id] = t; //the table object is stored using its id as key
createGrips(t); //grips are created
};
/**
* This function allows to remove any enhancements performed by this plugin on a previously processed table.
* @param {jQuery ref} t - table object
*/
var destroy = function(t){
var id=t.attr(ID), t=tables[id]; //its table object is found
if(!t||!t.is("table")) return; //if none, then it wasn't processed
t.removeClass(SIGNATURE+" "+FLEX).gc.remove(); //class and grips are removed
delete tables[id]; //clean up data
};
/**
* Function to create all the grips associated with the table given by parameters
* @param {jQuery ref} t - table object
*/
var createGrips = function(t){
var th = t.find(">thead>tr:first>th,>thead>tr:first>td"); //table headers are obtained
if(!th.length) th = t.find(">tbody>tr:first>th,>tr:first>th,>tbody>tr:first>td, >tr:first>td"); //but headers can also be included in different ways
th = th.filter(":visible"); //filter invisible columns
t.cg = t.find("col"); //a table can also contain a colgroup with col elements
t.ln = th.length; //table length is stored
if(t.p && S && S[t.id])memento(t,th); //if 'postbackSafe' is enabled and there is data for the current table, its coloumn layout is restored
th.each(function(i){ //iterate through the table column headers
var c = $(this); //jquery wrap for the current column
var dc = t.dc.indexOf(i)!=-1; //is this a disabled column?
var g = $(t.gc.append('<div class="JCLRgrip"></div>')[0].lastChild); //add the visual node to be used as grip
g.append(dc ? "": t.opt.gripInnerHtml).append('<div class="'+SIGNATURE+'"></div>');
if(i == t.ln-1){ //if the current grip is the las one
g.addClass("JCLRLastGrip"); //add a different css class to stlye it in a different way if needed
if(t.f) g.html(""); //if the table resizing mode is set to fixed, the last grip is removed since table with can not change
}
g.bind('touchstart mousedown', onGripMouseDown); //bind the mousedown event to start dragging
if (!dc){
//if normal column bind the mousedown event to start dragging, if disabled then apply its css class
g.removeClass('JCLRdisabledGrip').bind('touchstart mousedown', onGripMouseDown);
}else{
g.addClass('JCLRdisabledGrip');
}
g.t = t; g.i = i; g.c = c; c.w =c.width(); //some values are stored in the grip's node data as shortcut
t.g.push(g); t.c.push(c); //the current grip and column are added to its table object
c.width(c.w).removeAttr("width"); //the width of the column is converted into pixel-based measurements
g.data(SIGNATURE, {i:i, t:t.attr(ID), last: i == t.ln-1}); //grip index and its table name are stored in the HTML
});
t.cg.removeAttr("width"); //remove the width attribute from elements in the colgroup
t.find('td, th').not(th).not('table th, table td').each(function(){
$(this).removeAttr('width'); //the width attribute is removed from all table cells which are not nested in other tables and dont belong to the header
});
if(!t.f){
t.removeAttr('width').addClass(FLEX); //if not fixed, let the table grow as needed
}
syncGrips(t); //the grips are positioned according to the current table layout
//there is a small problem, some cells in the table could contain dimension values interfering with the
//width value set by this plugin. Those values are removed
};
/**
* Function to allow the persistence of columns dimensions after a browser postback. It is based in
* the HTML5 sessionStorage object, which can be emulated for older browsers using sessionstorage.js
* @param {jQuery ref} t - table object
* @param {jQuery ref} th - reference to the first row elements (only set in deserialization)
*/
var memento = function(t, th){
var w,m=0,i=0,aux =[],tw;
if(th){ //in deserialization mode (after a postback)
t.cg.removeAttr("width");
if(t.opt.flush){ S[t.id] =""; return;} //if flush is activated, stored data is removed
w = S[t.id].split(";"); //column widths is obtained
tw = w[t.ln+1];
if(!t.f && tw){ //if not fixed and table width data available its size is restored
t.width(tw*=1);
if(t.opt.overflow) { //if overfolw flag is set, restore table width also as table min-width
t.css('min-width', tw + PX);
t.w = tw;
}
}
for(;i<t.ln;i++){ //for each column
aux.push(100*w[i]/w[t.ln]+"%"); //width is stored in an array since it will be required again a couple of lines ahead
th.eq(i).css("width", aux[i] ); //each column width in % is restored
}
for(i=0;i<t.ln;i++)
t.cg.eq(i).css("width", aux[i]); //this code is required in order to create an inline CSS rule with higher precedence than an existing CSS class in the "col" elements
}else{ //in serialization mode (after resizing a column)
S[t.id] =""; //clean up previous data
for(;i < t.c.length; i++){ //iterate through columns
w = t.c[i].width(); //width is obtained
S[t.id] += w+";"; //width is appended to the sessionStorage object using ID as key
m+=w; //carriage is updated to obtain the full size used by columns
}
S[t.id]+=m; //the last item of the serialized string is the table's active area (width),
//to be able to obtain % width value of each columns while deserializing
if(!t.f) S[t.id] += ";"+t.width(); //if not fixed, table width is stored
}
};
/**
* Function that places each grip in the correct position according to the current table layout
* @param {jQuery ref} t - table object
*/
var syncGrips = function (t){
t.gc.width(t.w); //the grip's container width is updated
for(var i=0; i<t.ln; i++){ //for each column
var c = t.c[i];
t.g[i].css({ //height and position of the grip is updated according to the table layout
left: c.offset().left - t.offset().left + c.outerWidth(false) + t.cs / 2 + PX,
height: t.opt.headerOnly? t.c[0].outerHeight(false) : t.outerHeight(false)
});
}
};
/**
* This function updates column's width according to the horizontal position increment of the grip being
* dragged. The function can be called while dragging if liveDragging is enabled and also from the onGripDragOver
* event handler to synchronize grip's position with their related columns.
* @param {jQuery ref} t - table object
* @param {number} i - index of the grip being dragged
* @param {bool} isOver - to identify when the function is being called from the onGripDragOver event
*/
var syncCols = function(t,i,isOver){
var inc = drag.x-drag.l, c = t.c[i], c2 = t.c[i+1];
var w = c.w + inc; var w2= c2.w- inc; //their new width is obtained
c.width( w + PX);
t.cg.eq(i).width( w + PX);
if(t.f){ //if fixed mode
c2.width(w2 + PX);
t.cg.eq(i+1).width( w2 + PX);
}else if(t.opt.overflow) { //if overflow is set, incriment min-width to force overflow
t.css('min-width', t.w + inc);
}
if(isOver){
c.w=w;
c2.w= t.f ? w2 : c2.w;
}
};
/**
* This function updates all columns width according to its real width. It must be taken into account that the
* sum of all columns can exceed the table width in some cases (if fixed is set to false and table has some kind
* of max-width).
* @param {jQuery ref} t - table object
*/
var applyBounds = function(t){
var w = $.map(t.c, function(c){ //obtain real widths
return c.width();
});
t.width(t.w = t.width()).removeClass(FLEX); //prevent table width changes
$.each(t.c, function(i,c){
c.width(w[i]).w = w[i]; //set column widths applying bounds (table's max-width)
});
t.addClass(FLEX); //allow table width changes
};
/**
* Event handler used while dragging a grip. It checks if the next grip's position is valid and updates it.
* @param {event} e - mousemove event binded to the window object
*/
var onGripDrag = function(e){
if(!drag) return;
var t = drag.t; //table object reference
var oe = e.originalEvent.touches;
var ox = oe ? oe[0].pageX : e.pageX; //original position (touch or mouse)
var x = ox - drag.ox + drag.l; //next position according to horizontal mouse position increment
var mw = t.opt.minWidth, i = drag.i ; //cell's min width
var l = t.cs*1.5 + mw + t.b;
var last = i == t.ln-1; //check if it is the last column's grip (usually hidden)
var min = i? t.g[i-1].position().left+t.cs+mw: l; //min position according to the contiguous cells
var max = t.f ? //fixed mode?
i == t.ln-1?
t.w-l:
t.g[i+1].position().left-t.cs-mw:
Infinity; //max position according to the contiguous cells
x = M.max(min, M.min(max, x)); //apply bounding
drag.x = x; drag.css("left", x + PX); //apply position increment
if(last){ //if it is the last grip
var c = t.c[drag.i]; //width of the last column is obtained
drag.w = c.w + x- drag.l;
}
if(t.opt.liveDrag){ //if liveDrag is enabled
if(last){
c.width(drag.w);
if(!t.f && t.opt.overflow){ //if overflow is set, incriment min-width to force overflow
t.css('min-width', t.w + x - drag.l);
}else {
t.w = t.width();
}
}else{
syncCols(t,i); //columns are synchronized
}
syncGrips(t);
var cb = t.opt.onDrag; //check if there is an onDrag callback
if (cb) { e.currentTarget = t[0]; cb(e); } //if any, it is fired
}
return false; //prevent text selection while dragging
};
/**
* Event handler fired when the dragging is over, updating table layout
* @param {event} e - grip's drag over event
*/
var onGripDragOver = function(e){
d.unbind('touchend.'+SIGNATURE+' mouseup.'+SIGNATURE).unbind('touchmove.'+SIGNATURE+' mousemove.'+SIGNATURE);
$("head :last-child").remove(); //remove the dragging cursor style
if(!drag) return;
drag.removeClass(drag.t.opt.draggingClass); //remove the grip's dragging css-class
if (!(drag.x - drag.l == 0)) {
var t = drag.t;
var cb = t.opt.onResize; //get some values
var i = drag.i; //column index
var last = i == t.ln-1; //check if it is the last column's grip (usually hidden)
var c = t.g[i].c; //the column being dragged
if(last){
c.width(drag.w);
c.w = drag.w;
}else{
syncCols(t, i, true); //the columns are updated
}
if(!t.f) applyBounds(t); //if not fixed mode, then apply bounds to obtain real width values
syncGrips(t); //the grips are updated
if (cb) { e.currentTarget = t[0]; cb(e); } //if there is a callback function, it is fired
if(t.p && S) memento(t); //if postbackSafe is enabled and there is sessionStorage support, the new layout is serialized and stored
}
drag = null; //since the grip's dragging is over
};
/**
* Event handler fired when the grip's dragging is about to start. Its main goal is to set up events
* and store some values used while dragging.
* @param {event} e - grip's mousedown event
*/
var onGripMouseDown = function(e){
var o = $(this).data(SIGNATURE); //retrieve grip's data
var t = tables[o.t], g = t.g[o.i]; //shortcuts for the table and grip objects
var oe = e.originalEvent.touches; //touch or mouse event?
g.ox = oe? oe[0].pageX: e.pageX; //the initial position is kept
g.l = g.position().left;
g.x = g.l;
d.bind('touchmove.'+SIGNATURE+' mousemove.'+SIGNATURE, onGripDrag ).bind('touchend.'+SIGNATURE+' mouseup.'+SIGNATURE, onGripDragOver); //mousemove and mouseup events are bound
h.append("<style type='text/css'>*{cursor:"+ t.opt.dragCursor +"!important}</style>"); //change the mouse cursor
g.addClass(t.opt.draggingClass); //add the dragging class (to allow some visual feedback)
drag = g; //the current grip is stored as the current dragging object
if(t.c[o.i].l) for(var i=0,c; i<t.ln; i++){ c=t.c[i]; c.l = false; c.w= c.width(); } //if the colum is locked (after browser resize), then c.w must be updated
return false; //prevent text selection
};
/**
* Event handler fired when the browser is resized. The main purpose of this function is to update
* table layout according to the browser's size synchronizing related grips
*/
var onResize = function(){
for(var t in tables){
if( tables.hasOwnProperty( t ) ) {
t = tables[t];
var i, mw=0;
t.removeClass(SIGNATURE); //firefox doesn't like layout-fixed in some cases
if (t.f) { //in fixed mode
t.w = t.width(); //its new width is kept
for(i=0; i<t.ln; i++) mw+= t.c[i].w;
//cell rendering is not as trivial as it might seem, and it is slightly different for
//each browser. In the beginning i had a big switch for each browser, but since the code
//was extremely ugly now I use a different approach with several re-flows. This works
//pretty well but it's a bit slower. For now, lets keep things simple...
for(i=0; i<t.ln; i++) t.c[i].css("width", M.round(1000*t.c[i].w/mw)/10 + "%").l=true;
//c.l locks the column, telling us that its c.w is outdated
}else{ //in non fixed-sized tables
applyBounds(t); //apply the new bounds
if(t.mode == 'flex' && t.p && S){ //if postbackSafe is enabled and there is sessionStorage support,
memento(t); //the new layout is serialized and stored for 'flex' tables
}
}
syncGrips(t.addClass(SIGNATURE));
}
}
};
//bind resize event, to update grips position
$(window).bind('resize.'+SIGNATURE, onResize);
/**
* The plugin is added to the jQuery library
* @param {Object} options - an object that holds some basic customization values
*/
$.fn.extend({
colResizable: function(options) {
var defaults = {
//attributes:
resizeMode: 'fit', //mode can be 'fit', 'flex' or 'overflow'
draggingClass: 'JCLRgripDrag', //css-class used when a grip is being dragged (for visual feedback purposes)
gripInnerHtml: '', //if it is required to use a custom grip it can be done using some custom HTML
liveDrag: false, //enables table-layout updating while dragging
minWidth: 15, //minimum width value in pixels allowed for a column
headerOnly: false, //specifies that the size of the the column resizing anchors will be bounded to the size of the first row
hoverCursor: "e-resize", //cursor to be used on grip hover
dragCursor: "e-resize", //cursor to be used while dragging
postbackSafe: false, //when it is enabled, table layout can persist after postback or page refresh. It requires browsers with sessionStorage support (it can be emulated with sessionStorage.js).
flush: false, //when postbakSafe is enabled, and it is required to prevent layout restoration after postback, 'flush' will remove its associated layout data
marginLeft: null, //in case the table contains any margins, colResizable needs to know the values used, e.g. "10%", "15em", "5px" ...
marginRight: null, //in case the table contains any margins, colResizable needs to know the values used, e.g. "10%", "15em", "5px" ...
disable: false, //disables all the enhancements performed in a previously colResized table
partialRefresh: false, //can be used in combination with postbackSafe when the table is inside of an updatePanel,
disabledColumns: [], //column indexes to be excluded
//events:
onDrag: null, //callback function to be fired during the column resizing process if liveDrag is enabled
onResize: null //callback function fired when the dragging process is over
}
var options = $.extend(defaults, options);
//since now there are 3 different ways of resizing columns, I changed the external interface to make it clear
//calling it 'resizeMode' but also to remove the "fixed" attribute which was confusing for many people
options.fixed = true;
options.overflow = false;
switch(options.resizeMode){
case 'flex': options.fixed = false; break;
case 'overflow': options.fixed = false; options.overflow = true; break;
}
return this.each(function() {
init( this, options);
});
}
});
})(jQuery);
bootstrap-table-resizable.js
/**
* @author: Dennis Hernández
* @webSite: http://djhvscf.github.io/Blog
* @version: v1.0.0
*/
(function ($) {
'use strict';
var initResizable = function (that) {
//Deletes the plugin to re-create it
that.$el.colResizable({disable: true});
//Creates the plugin
that.$el.colResizable({
liveDrag: that.options.liveDrag,
fixed: that.options.fixed,
headerOnly: that.options.headerOnly,
minWidth: that.options.minWidth,
hoverCursor: that.options.hoverCursor,
dragCursor: that.options.dragCursor,
onResize: that.onResize,
onDrag: that.options.onResizableDrag,
resizeMode: that.options.resizeMode
});
};
$.extend($.fn.bootstrapTable.defaults, {
resizable: true,
liveDrag: false,
fixed: true,
headerOnly: false,
minWidth: 15,
hoverCursor: 'e-resize',
dragCursor: 'e-resize',
onResizableResize: function (e) {
return false;
},
onResizableDrag: function (e) {
return false;
}
});
var BootstrapTable = $.fn.bootstrapTable.Constructor,
_toggleView = BootstrapTable.prototype.toggleView,
_resetView = BootstrapTable.prototype.resetView;
BootstrapTable.prototype.toggleView = function () {
_toggleView.apply(this, Array.prototype.slice.apply(arguments));
if (this.options.resizable && this.options.cardView) {
//Deletes the plugin
$(this.$el).colResizable({disable: true});
}
};
BootstrapTable.prototype.resetView = function () {
var that = this;
_resetView.apply(this, Array.prototype.slice.apply(arguments));
if (this.options.resizable) {
// because in fitHeader function, we use setTimeout(func, 100);
setTimeout(function () {
initResizable(that);
}, 100);
}
};
BootstrapTable.prototype.onResize = function (e) {
var that = $(e.currentTarget);
that.bootstrapTable('resetView');
that.data('bootstrap.table').options.onResizableResize.apply(e);
}
})(jQuery);
直接引入后便可以实现拖拽列变宽
原文出处https://www.cnblogs.com/legend-123/p/9478799.html
原文地址：https://blog.csdn.net/languai/article/details/89467460
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