--- /dev/null
+<html>
+<head>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+ <title>The source code</title>
+ <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
+ <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
+</head>
+<body onload="prettyPrint();">
+ <pre class="prettyprint lang-js">/*!
+ * Ext JS Library 3.3.0
+ * Copyright(c) 2006-2010 Ext JS, Inc.
+ * licensing@extjs.com
+ * http://www.extjs.com/license
+ */
+Ext.ux.Portal = Ext.extend(Ext.Panel, {
+ layout : 'column',
+ autoScroll : true,
+ cls : 'x-portal',
+ defaultType : 'portalcolumn',
+
+ initComponent : function(){
+ Ext.ux.Portal.superclass.initComponent.call(this);
+ this.addEvents({
+ validatedrop:true,
+ beforedragover:true,
+ dragover:true,
+ beforedrop:true,
+ drop:true
+ });
+ },
+
+ initEvents : function(){
+ Ext.ux.Portal.superclass.initEvents.call(this);
+ this.dd = new Ext.ux.Portal.DropZone(this, this.dropConfig);
+ },
+
+ beforeDestroy : function() {
+ if(this.dd){
+ this.dd.unreg();
+ }
+ Ext.ux.Portal.superclass.beforeDestroy.call(this);
+ }
+});
+
+Ext.reg('portal', Ext.ux.Portal);
+
+Ext.ux.Portal.DropZone = Ext.extend(Ext.dd.DropTarget, {
+
+ constructor : function(portal, cfg){
+ this.portal = portal;
+ Ext.dd.ScrollManager.register(portal.body);
+ Ext.ux.Portal.DropZone.superclass.constructor.call(this, portal.bwrap.dom, cfg);
+ portal.body.ddScrollConfig = this.ddScrollConfig;
+ },
+
+ ddScrollConfig : {
+ vthresh: 50,
+ hthresh: -1,
+ animate: true,
+ increment: 200
+ },
+
+ createEvent : function(dd, e, data, col, c, pos){
+ return {
+ portal: this.portal,
+ panel: data.panel,
+ columnIndex: col,
+ column: c,
+ position: pos,
+ data: data,
+ source: dd,
+ rawEvent: e,
+ status: this.dropAllowed
+ };
+ },
+
+ notifyOver : function(dd, e, data){
+ var xy = e.getXY(), portal = this.portal, px = dd.proxy;
+
+ // case column widths
+ if(!this.grid){
+ this.grid = this.getGrid();
+ }
+
+ // handle case scroll where scrollbars appear during drag
+ var cw = portal.body.dom.clientWidth;
+ if(!this.lastCW){
+ this.lastCW = cw;
+ }else if(this.lastCW != cw){
+ this.lastCW = cw;
+ portal.doLayout();
+ this.grid = this.getGrid();
+ }
+
+ // determine column
+ var col = 0, xs = this.grid.columnX, cmatch = false;
+ for(var len = xs.length; col < len; col++){
+ if(xy[0] < (xs[col].x + xs[col].w)){
+ cmatch = true;
+ break;
+ }
+ }
+ // no match, fix last index
+ if(!cmatch){
+ col--;
+ }
+
+ // find insert position
+ var p, match = false, pos = 0,
+ c = portal.items.itemAt(col),
+ items = c.items.items, overSelf = false;
+
+ for(var len = items.length; pos < len; pos++){
+ p = items[pos];
+ var h = p.el.getHeight();
+ if(h === 0){
+ overSelf = true;
+ }
+ else if((p.el.getY()+(h/2)) > xy[1]){
+ match = true;
+ break;
+ }
+ }
+
+ pos = (match && p ? pos : c.items.getCount()) + (overSelf ? -1 : 0);
+ var overEvent = this.createEvent(dd, e, data, col, c, pos);
+
+ if(portal.fireEvent('validatedrop', overEvent) !== false &&
+ portal.fireEvent('beforedragover', overEvent) !== false){
+
+ // make sure proxy width is fluid
+ px.getProxy().setWidth('auto');
+
+ if(p){
+ px.moveProxy(p.el.dom.parentNode, match ? p.el.dom : null);
+ }else{
+ px.moveProxy(c.el.dom, null);
+ }
+
+ this.lastPos = {c: c, col: col, p: overSelf || (match && p) ? pos : false};
+ this.scrollPos = portal.body.getScroll();
+
+ portal.fireEvent('dragover', overEvent);
+
+ return overEvent.status;
+ }else{
+ return overEvent.status;
+ }
+
+ },
+
+ notifyOut : function(){
+ delete this.grid;
+ },
+
+ notifyDrop : function(dd, e, data){
+ delete this.grid;
+ if(!this.lastPos){
+ return;
+ }
+ var c = this.lastPos.c,
+ col = this.lastPos.col,
+ pos = this.lastPos.p,
+ panel = dd.panel,
+ dropEvent = this.createEvent(dd, e, data, col, c,
+ pos !== false ? pos : c.items.getCount());
+
+ if(this.portal.fireEvent('validatedrop', dropEvent) !== false &&
+ this.portal.fireEvent('beforedrop', dropEvent) !== false){
+
+ dd.proxy.getProxy().remove();
+ panel.el.dom.parentNode.removeChild(dd.panel.el.dom);
+
+ if(pos !== false){
+ c.insert(pos, panel);
+ }else{
+ c.add(panel);
+ }
+
+ c.doLayout();
+
+ this.portal.fireEvent('drop', dropEvent);
+
+ // scroll position is lost on drop, fix it
+ var st = this.scrollPos.top;
+ if(st){
+ var d = this.portal.body.dom;
+ setTimeout(function(){
+ d.scrollTop = st;
+ }, 10);
+ }
+
+ }
+ delete this.lastPos;
+ },
+
+ // internal cache of body and column coords
+ getGrid : function(){
+ var box = this.portal.bwrap.getBox();
+ box.columnX = [];
+ this.portal.items.each(function(c){
+ box.columnX.push({x: c.el.getX(), w: c.el.getWidth()});
+ });
+ return box;
+ },
+
+ // unregister the dropzone from ScrollManager
+ unreg: function() {
+ Ext.dd.ScrollManager.unregister(this.portal.body);
+ Ext.ux.Portal.DropZone.superclass.unreg.call(this);
+ }
+});
+</pre>
+</body>
+</html>
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git.ithinksw.org / extjs.git / blobdiff