/*!
 * Ext JS Library 3.2.1
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
/** * @class Ext.list.ColumnResizer * @extends Ext.util.Observable *

Supporting Class for Ext.list.ListView

* @constructor * @param {Object} config */ Ext.list.ColumnResizer = Ext.extend(Ext.util.Observable, {
/** * @cfg {Number} minPct The minimum percentage to allot for any column (defaults to .05) */ minPct: .05, constructor: function(config){ Ext.apply(this, config); Ext.list.ColumnResizer.superclass.constructor.call(this); }, init : function(listView){ this.view = listView; listView.on('render', this.initEvents, this); }, initEvents : function(view){ view.mon(view.innerHd, 'mousemove', this.handleHdMove, this); this.tracker = new Ext.dd.DragTracker({ onBeforeStart: this.onBeforeStart.createDelegate(this), onStart: this.onStart.createDelegate(this), onDrag: this.onDrag.createDelegate(this), onEnd: this.onEnd.createDelegate(this), tolerance: 3, autoStart: 300 }); this.tracker.initEl(view.innerHd); view.on('beforedestroy', this.tracker.destroy, this.tracker); }, handleHdMove : function(e, t){ var hw = 5, x = e.getPageX(), hd = e.getTarget('em', 3, true); if(hd){ var r = hd.getRegion(), ss = hd.dom.style, pn = hd.dom.parentNode; if(x - r.left <= hw && pn != pn.parentNode.firstChild){ this.activeHd = Ext.get(pn.previousSibling.firstChild); ss.cursor = Ext.isWebKit ? 'e-resize' : 'col-resize'; } else if(r.right - x <= hw && pn != pn.parentNode.lastChild.previousSibling){ this.activeHd = hd; ss.cursor = Ext.isWebKit ? 'w-resize' : 'col-resize'; } else{ delete this.activeHd; ss.cursor = ''; } } }, onBeforeStart : function(e){ this.dragHd = this.activeHd; return !!this.dragHd; }, onStart: function(e){ this.view.disableHeaders = true; this.proxy = this.view.el.createChild({cls:'x-list-resizer'}); this.proxy.setHeight(this.view.el.getHeight()); var x = this.tracker.getXY()[0], w = this.view.innerHd.getWidth(); this.hdX = this.dragHd.getX(); this.hdIndex = this.view.findHeaderIndex(this.dragHd); this.proxy.setX(this.hdX); this.proxy.setWidth(x-this.hdX); this.minWidth = w*this.minPct; this.maxWidth = w - (this.minWidth*(this.view.columns.length-1-this.hdIndex)); }, onDrag: function(e){ var cursorX = this.tracker.getXY()[0]; this.proxy.setWidth((cursorX-this.hdX).constrain(this.minWidth, this.maxWidth)); }, onEnd: function(e){ /* calculate desired width by measuring proxy and then remove it */ var nw = this.proxy.getWidth(); this.proxy.remove(); var index = this.hdIndex, vw = this.view, cs = vw.columns, len = cs.length, w = this.view.innerHd.getWidth(), minPct = this.minPct * 100, pct = Math.ceil((nw * vw.maxWidth) / w), diff = (cs[index].width * 100) - pct, eachItem = Math.floor(diff / (len-1-index)), mod = diff - (eachItem * (len-1-index)); for(var i = index+1; i < len; i++){ var cw = (cs[i].width * 100) + eachItem, ncw = Math.max(minPct, cw); if(cw != ncw){ mod += cw - ncw; } cs[i].width = ncw / 100; } cs[index].width = pct / 100; cs[index+1].width += (mod / 100); delete this.dragHd; vw.setHdWidths(); vw.refresh(); setTimeout(function(){ vw.disableHeaders = false; }, 100); } }); // Backwards compatibility alias Ext.ListView.ColumnResizer = Ext.list.ColumnResizer;