examples/docs/source/ColumnHeaderGroup.html

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   4   <title>The source code</title>
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   9     <pre class="prettyprint lang-js">/*!
  10  * Ext JS Library 3.3.1
  11  * Copyright(c) 2006-2010 Sencha Inc.
  12  * licensing@sencha.com
  13  * http://www.sencha.com/license
  14  */
  15 Ext.ns('Ext.ux.grid');
  16
  17 Ext.ux.grid.ColumnHeaderGroup = Ext.extend(Ext.util.Observable, {
  18
  19     constructor: function(config){
  20         this.config = config;
  21     },
  22
  23     init: function(grid){
  24         Ext.applyIf(grid.colModel, this.config);
  25         Ext.apply(grid.getView(), this.viewConfig);
  26     },
  27
  28     viewConfig: {
  29         initTemplates: function(){
  30             this.constructor.prototype.initTemplates.apply(this, arguments);
  31             var ts = this.templates || {};
  32             if(!ts.gcell){
  33                 ts.gcell = new Ext.XTemplate('<td class="x-grid3-hd x-grid3-gcell x-grid3-td-{id} ux-grid-hd-group-row-{row} {cls}" style="{style}">', '<div {tooltip} class="x-grid3-hd-inner x-grid3-hd-{id}" unselectable="on" style="{istyle}">', this.grid.enableHdMenu ? '<a class="x-grid3-hd-btn" href="#"></a>' : '', '{value}</div></td>');
  34             }
  35             this.templates = ts;
  36             this.hrowRe = new RegExp("ux-grid-hd-group-row-(\\d+)", "");
  37         },
  38
  39         renderHeaders: function(){
  40             var ts = this.templates, headers = [], cm = this.cm, rows = cm.rows, tstyle = 'width:' + this.getTotalWidth() + ';';
  41
  42             for(var row = 0, rlen = rows.length; row < rlen; row++){
  43                 var r = rows[row], cells = [];
  44                 for(var i = 0, gcol = 0, len = r.length; i < len; i++){
  45                     var group = r[i];
  46                     group.colspan = group.colspan || 1;
  47                     var id = this.getColumnId(group.dataIndex ? cm.findColumnIndex(group.dataIndex) : gcol), gs = Ext.ux.grid.ColumnHeaderGroup.prototype.getGroupStyle.call(this, group, gcol);
  48                     cells[i] = ts.gcell.apply({
  49                         cls: 'ux-grid-hd-group-cell',
  50                         id: id,
  51                         row: row,
  52                         style: 'width:' + gs.width + ';' + (gs.hidden ? 'display:none;' : '') + (group.align ? 'text-align:' + group.align + ';' : ''),
  53                         tooltip: group.tooltip ? (Ext.QuickTips.isEnabled() ? 'ext:qtip' : 'title') + '="' + group.tooltip + '"' : '',
  54                         istyle: group.align == 'right' ? 'padding-right:16px' : '',
  55                         btn: this.grid.enableHdMenu && group.header,
  56                         value: group.header || '&nbsp;'
  57                     });
  58                     gcol += group.colspan;
  59                 }
  60                 headers[row] = ts.header.apply({
  61                     tstyle: tstyle,
  62                     cells: cells.join('')
  63                 });
  64             }
  65             headers.push(this.constructor.prototype.renderHeaders.apply(this, arguments));
  66             return headers.join('');
  67         },
  68
  69         onColumnWidthUpdated: function(){
  70             this.constructor.prototype.onColumnWidthUpdated.apply(this, arguments);
  71             Ext.ux.grid.ColumnHeaderGroup.prototype.updateGroupStyles.call(this);
  72         },
  73
  74         onAllColumnWidthsUpdated: function(){
  75             this.constructor.prototype.onAllColumnWidthsUpdated.apply(this, arguments);
  76             Ext.ux.grid.ColumnHeaderGroup.prototype.updateGroupStyles.call(this);
  77         },
  78
  79         onColumnHiddenUpdated: function(){
  80             this.constructor.prototype.onColumnHiddenUpdated.apply(this, arguments);
  81             Ext.ux.grid.ColumnHeaderGroup.prototype.updateGroupStyles.call(this);
  82         },
  83
  84         getHeaderCell: function(index){
  85             return this.mainHd.query(this.cellSelector)[index];
  86         },
  87
  88         findHeaderCell: function(el){
  89             return el ? this.fly(el).findParent('td.x-grid3-hd', this.cellSelectorDepth) : false;
  90         },
  91
  92         findHeaderIndex: function(el){
  93             var cell = this.findHeaderCell(el);
  94             return cell ? this.getCellIndex(cell) : false;
  95         },
  96
  97         updateSortIcon: function(col, dir){
  98             var sc = this.sortClasses, hds = this.mainHd.select(this.cellSelector).removeClass(sc);
  99             hds.item(col).addClass(sc[dir == "DESC" ? 1 : 0]);
 100         },
 101
 102         handleHdDown: function(e, t){
 103             var el = Ext.get(t);
 104             if(el.hasClass('x-grid3-hd-btn')){
 105                 e.stopEvent();
 106                 var hd = this.findHeaderCell(t);
 107                 Ext.fly(hd).addClass('x-grid3-hd-menu-open');
 108                 var index = this.getCellIndex(hd);
 109                 this.hdCtxIndex = index;
 110                 var ms = this.hmenu.items, cm = this.cm;
 111                 ms.get('asc').setDisabled(!cm.isSortable(index));
 112                 ms.get('desc').setDisabled(!cm.isSortable(index));
 113                 this.hmenu.on('hide', function(){
 114                     Ext.fly(hd).removeClass('x-grid3-hd-menu-open');
 115                 }, this, {
 116                     single: true
 117                 });
 118                 this.hmenu.show(t, 'tl-bl?');
 119             }else if(el.hasClass('ux-grid-hd-group-cell') || Ext.fly(t).up('.ux-grid-hd-group-cell')){
 120                 e.stopEvent();
 121             }
 122         },
 123
 124         handleHdMove: function(e, t){
 125             var hd = this.findHeaderCell(this.activeHdRef);
 126             if(hd && !this.headersDisabled && !Ext.fly(hd).hasClass('ux-grid-hd-group-cell')){
 127                 var hw = this.splitHandleWidth || 5, r = this.activeHdRegion, x = e.getPageX(), ss = hd.style, cur = '';
 128                 if(this.grid.enableColumnResize !== false){
 129                     if(x - r.left <= hw && this.cm.isResizable(this.activeHdIndex - 1)){
 130                         cur = Ext.isAir ? 'move' : Ext.isWebKit ? 'e-resize' : 'col-resize'; // col-resize
 131                                                                                                 // not
 132                                                                                                 // always
 133                                                                                                 // supported
 134                     }else if(r.right - x <= (!this.activeHdBtn ? hw : 2) && this.cm.isResizable(this.activeHdIndex)){
 135                         cur = Ext.isAir ? 'move' : Ext.isWebKit ? 'w-resize' : 'col-resize';
 136                     }
 137                 }
 138                 ss.cursor = cur;
 139             }
 140         },
 141
 142         handleHdOver: function(e, t){
 143             var hd = this.findHeaderCell(t);
 144             if(hd && !this.headersDisabled){
 145                 this.activeHdRef = t;
 146                 this.activeHdIndex = this.getCellIndex(hd);
 147                 var fly = this.fly(hd);
 148                 this.activeHdRegion = fly.getRegion();
 149                 if(!(this.cm.isMenuDisabled(this.activeHdIndex) || fly.hasClass('ux-grid-hd-group-cell'))){
 150                     fly.addClass('x-grid3-hd-over');
 151                     this.activeHdBtn = fly.child('.x-grid3-hd-btn');
 152                     if(this.activeHdBtn){
 153                         this.activeHdBtn.dom.style.height = (hd.firstChild.offsetHeight - 1) + 'px';
 154                     }
 155                 }
 156             }
 157         },
 158
 159         handleHdOut: function(e, t){
 160             var hd = this.findHeaderCell(t);
 161             if(hd && (!Ext.isIE || !e.within(hd, true))){
 162                 this.activeHdRef = null;
 163                 this.fly(hd).removeClass('x-grid3-hd-over');
 164                 hd.style.cursor = '';
 165             }
 166         },
 167
 168         handleHdMenuClick: function(item){
 169             var index = this.hdCtxIndex, cm = this.cm, ds = this.ds, id = item.getItemId();
 170             switch(id){
 171                 case 'asc':
 172                     ds.sort(cm.getDataIndex(index), 'ASC');
 173                     break;
 174                 case 'desc':
 175                     ds.sort(cm.getDataIndex(index), 'DESC');
 176                     break;
 177                 default:
 178                     if(id.substr(0, 6) == 'group-'){
 179                         var i = id.split('-'), row = parseInt(i[1], 10), col = parseInt(i[2], 10), r = this.cm.rows[row], group, gcol = 0;
 180                         for(var i = 0, len = r.length; i < len; i++){
 181                             group = r[i];
 182                             if(col >= gcol && col < gcol + group.colspan){
 183                                 break;
 184                             }
 185                             gcol += group.colspan;
 186                         }
 187                         if(item.checked){
 188                             var max = cm.getColumnsBy(this.isHideableColumn, this).length;
 189                             for(var i = gcol, len = gcol + group.colspan; i < len; i++){
 190                                 if(!cm.isHidden(i)){
 191                                     max--;
 192                                 }
 193                             }
 194                             if(max < 1){
 195                                 this.onDenyColumnHide();
 196                                 return false;
 197                             }
 198                         }
 199                         for(var i = gcol, len = gcol + group.colspan; i < len; i++){
 200                             if(cm.config[i].fixed !== true && cm.config[i].hideable !== false){
 201                                 cm.setHidden(i, item.checked);
 202                             }
 203                         }
 204                     }else if(id.substr(0, 4) == 'col-'){
 205                         index = cm.getIndexById(id.substr(4));
 206                         if(index != -1){
 207                             if(item.checked && cm.getColumnsBy(this.isHideableColumn, this).length <= 1){
 208                                 this.onDenyColumnHide();
 209                                 return false;
 210                             }
 211                             cm.setHidden(index, item.checked);
 212                         }
 213                     }
 214                     if(id.substr(0, 6) == 'group-' || id.substr(0, 4) == 'col-'){
 215                         item.checked = !item.checked;
 216                         if(item.menu){
 217                             var updateChildren = function(menu){
 218                                 menu.items.each(function(childItem){
 219                                     if(!childItem.disabled){
 220                                         childItem.setChecked(item.checked, false);
 221                                         if(childItem.menu){
 222                                             updateChildren(childItem.menu);
 223                                         }
 224                                     }
 225                                 });
 226                             }
 227                             updateChildren(item.menu);
 228                         }
 229                         var parentMenu = item, parentItem;
 230                         while(parentMenu = parentMenu.parentMenu){
 231                             if(!parentMenu.parentMenu || !(parentItem = parentMenu.parentMenu.items.get(parentMenu.getItemId())) || !parentItem.setChecked){
 232                                 break;
 233                             }
 234                             var checked = parentMenu.items.findIndexBy(function(m){
 235                                 return m.checked;
 236                             }) >= 0;
 237                             parentItem.setChecked(checked, true);
 238                         }
 239                         item.checked = !item.checked;
 240                     }
 241             }
 242             return true;
 243         },
 244
 245         beforeColMenuShow: function(){
 246             var cm = this.cm, rows = this.cm.rows;
 247             this.colMenu.removeAll();
 248             for(var col = 0, clen = cm.getColumnCount(); col < clen; col++){
 249                 var menu = this.colMenu, title = cm.getColumnHeader(col), text = [];
 250                 if(cm.config[col].fixed !== true && cm.config[col].hideable !== false){
 251                     for(var row = 0, rlen = rows.length; row < rlen; row++){
 252                         var r = rows[row], group, gcol = 0;
 253                         for(var i = 0, len = r.length; i < len; i++){
 254                             group = r[i];
 255                             if(col >= gcol && col < gcol + group.colspan){
 256                                 break;
 257                             }
 258                             gcol += group.colspan;
 259                         }
 260                         if(group && group.header){
 261                             if(cm.hierarchicalColMenu){
 262                                 var gid = 'group-' + row + '-' + gcol,
 263                                     item = menu.items ? menu.getComponent(gid) : null,
 264                                     submenu = item ? item.menu : null;
 265                                 if(!submenu){
 266                                     submenu = new Ext.menu.Menu({
 267                                         itemId: gid
 268                                     });
 269                                     submenu.on("itemclick", this.handleHdMenuClick, this);
 270                                     var checked = false, disabled = true;
 271                                     for(var c = gcol, lc = gcol + group.colspan; c < lc; c++){
 272                                         if(!cm.isHidden(c)){
 273                                             checked = true;
 274                                         }
 275                                         if(cm.config[c].hideable !== false){
 276                                             disabled = false;
 277                                         }
 278                                     }
 279                                     menu.add({
 280                                         itemId: gid,
 281                                         text: group.header,
 282                                         menu: submenu,
 283                                         hideOnClick: false,
 284                                         checked: checked,
 285                                         disabled: disabled
 286                                     });
 287                                 }
 288                                 menu = submenu;
 289                             }else{
 290                                 text.push(group.header);
 291                             }
 292                         }
 293                     }
 294                     text.push(title);
 295                     menu.add(new Ext.menu.CheckItem({
 296                         itemId: "col-" + cm.getColumnId(col),
 297                         text: text.join(' '),
 298                         checked: !cm.isHidden(col),
 299                         hideOnClick: false,
 300                         disabled: cm.config[col].hideable === false
 301                     }));
 302                 }
 303             }
 304         },
 305
 306         afterRenderUI: function(){
 307             this.constructor.prototype.afterRenderUI.apply(this, arguments);
 308             Ext.apply(this.columnDrop, Ext.ux.grid.ColumnHeaderGroup.prototype.columnDropConfig);
 309             Ext.apply(this.splitZone, Ext.ux.grid.ColumnHeaderGroup.prototype.splitZoneConfig);
 310         }
 311     },
 312
 313     splitZoneConfig: {
 314         allowHeaderDrag: function(e){
 315             return !e.getTarget(null, null, true).hasClass('ux-grid-hd-group-cell');
 316         }
 317     },
 318
 319     columnDropConfig: {
 320         getTargetFromEvent: function(e){
 321             var t = Ext.lib.Event.getTarget(e);
 322             return this.view.findHeaderCell(t);
 323         },
 324
 325         positionIndicator: function(h, n, e){
 326             var data = Ext.ux.grid.ColumnHeaderGroup.prototype.getDragDropData.call(this, h, n, e);
 327             if(data === false){
 328                 return false;
 329             }
 330             var px = data.px + this.proxyOffsets[0];
 331             this.proxyTop.setLeftTop(px, data.r.top + this.proxyOffsets[1]);
 332             this.proxyTop.show();
 333             this.proxyBottom.setLeftTop(px, data.r.bottom);
 334             this.proxyBottom.show();
 335             return data.pt;
 336         },
 337
 338         onNodeDrop: function(n, dd, e, data){
 339             var h = data.header;
 340             if(h != n){
 341                 var d = Ext.ux.grid.ColumnHeaderGroup.prototype.getDragDropData.call(this, h, n, e);
 342                 if(d === false){
 343                     return false;
 344                 }
 345                 var cm = this.grid.colModel, right = d.oldIndex < d.newIndex, rows = cm.rows;
 346                 for(var row = d.row, rlen = rows.length; row < rlen; row++){
 347                     var r = rows[row], len = r.length, fromIx = 0, span = 1, toIx = len;
 348                     for(var i = 0, gcol = 0; i < len; i++){
 349                         var group = r[i];
 350                         if(d.oldIndex >= gcol && d.oldIndex < gcol + group.colspan){
 351                             fromIx = i;
 352                         }
 353                         if(d.oldIndex + d.colspan - 1 >= gcol && d.oldIndex + d.colspan - 1 < gcol + group.colspan){
 354                             span = i - fromIx + 1;
 355                         }
 356                         if(d.newIndex >= gcol && d.newIndex < gcol + group.colspan){
 357                             toIx = i;
 358                         }
 359                         gcol += group.colspan;
 360                     }
 361                     var groups = r.splice(fromIx, span);
 362                     rows[row] = r.splice(0, toIx - (right ? span : 0)).concat(groups).concat(r);
 363                 }
 364                 for(var c = 0; c < d.colspan; c++){
 365                     var oldIx = d.oldIndex + (right ? 0 : c), newIx = d.newIndex + (right ? -1 : c);
 366                     cm.moveColumn(oldIx, newIx);
 367                     this.grid.fireEvent("columnmove", oldIx, newIx);
 368                 }
 369                 return true;
 370             }
 371             return false;
 372         }
 373     },
 374
 375     getGroupStyle: function(group, gcol){
 376         var width = 0, hidden = true;
 377         for(var i = gcol, len = gcol + group.colspan; i < len; i++){
 378             if(!this.cm.isHidden(i)){
 379                 var cw = this.cm.getColumnWidth(i);
 380                 if(typeof cw == 'number'){
 381                     width += cw;
 382                 }
 383                 hidden = false;
 384             }
 385         }
 386         return {
 387             width: (Ext.isBorderBox || (Ext.isWebKit && !Ext.isSafari2) ? width : Math.max(width - this.borderWidth, 0)) + 'px',
 388             hidden: hidden
 389         };
 390     },
 391
 392     updateGroupStyles: function(col){
 393         var tables = this.mainHd.query('.x-grid3-header-offset > table'), tw = this.getTotalWidth(), rows = this.cm.rows;
 394         for(var row = 0; row < tables.length; row++){
 395             tables[row].style.width = tw;
 396             if(row < rows.length){
 397                 var cells = tables[row].firstChild.firstChild.childNodes;
 398                 for(var i = 0, gcol = 0; i < cells.length; i++){
 399                     var group = rows[row][i];
 400                     if((typeof col != 'number') || (col >= gcol && col < gcol + group.colspan)){
 401                         var gs = Ext.ux.grid.ColumnHeaderGroup.prototype.getGroupStyle.call(this, group, gcol);
 402                         cells[i].style.width = gs.width;
 403                         cells[i].style.display = gs.hidden ? 'none' : '';
 404                     }
 405                     gcol += group.colspan;
 406                 }
 407             }
 408         }
 409     },
 410
 411     getGroupRowIndex: function(el){
 412         if(el){
 413             var m = el.className.match(this.hrowRe);
 414             if(m && m[1]){
 415                 return parseInt(m[1], 10);
 416             }
 417         }
 418         return this.cm.rows.length;
 419     },
 420
 421     getGroupSpan: function(row, col){
 422         if(row < 0){
 423             return {
 424                 col: 0,
 425                 colspan: this.cm.getColumnCount()
 426             };
 427         }
 428         var r = this.cm.rows[row];
 429         if(r){
 430             for(var i = 0, gcol = 0, len = r.length; i < len; i++){
 431                 var group = r[i];
 432                 if(col >= gcol && col < gcol + group.colspan){
 433                     return {
 434                         col: gcol,
 435                         colspan: group.colspan
 436                     };
 437                 }
 438                 gcol += group.colspan;
 439             }
 440             return {
 441                 col: gcol,
 442                 colspan: 0
 443             };
 444         }
 445         return {
 446             col: col,
 447             colspan: 1
 448         };
 449     },
 450
 451     getDragDropData: function(h, n, e){
 452         if(h.parentNode != n.parentNode){
 453             return false;
 454         }
 455         var cm = this.grid.colModel, x = Ext.lib.Event.getPageX(e), r = Ext.lib.Dom.getRegion(n.firstChild), px, pt;
 456         if((r.right - x) <= (r.right - r.left) / 2){
 457             px = r.right + this.view.borderWidth;
 458             pt = "after";
 459         }else{
 460             px = r.left;
 461             pt = "before";
 462         }
 463         var oldIndex = this.view.getCellIndex(h), newIndex = this.view.getCellIndex(n);
 464         if(cm.isFixed(newIndex)){
 465             return false;
 466         }
 467         var row = Ext.ux.grid.ColumnHeaderGroup.prototype.getGroupRowIndex.call(this.view, h),
 468             oldGroup = Ext.ux.grid.ColumnHeaderGroup.prototype.getGroupSpan.call(this.view, row, oldIndex),
 469             newGroup = Ext.ux.grid.ColumnHeaderGroup.prototype.getGroupSpan.call(this.view, row, newIndex),
 470             oldIndex = oldGroup.col;
 471             newIndex = newGroup.col + (pt == "after" ? newGroup.colspan : 0);
 472         if(newIndex >= oldGroup.col && newIndex <= oldGroup.col + oldGroup.colspan){
 473             return false;
 474         }
 475         var parentGroup = Ext.ux.grid.ColumnHeaderGroup.prototype.getGroupSpan.call(this.view, row - 1, oldIndex);
 476         if(newIndex < parentGroup.col || newIndex > parentGroup.col + parentGroup.colspan){
 477             return false;
 478         }
 479         return {
 480             r: r,
 481             px: px,
 482             pt: pt,
 483             row: row,
 484             oldIndex: oldIndex,
 485             newIndex: newIndex,
 486             colspan: oldGroup.colspan
 487         };
 488     }
 489 });</pre>
 490 </body>
 491 </html>