X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/d41dc04ad17d1d9125fb2cf72db2b4782dbe3a8c..e9397f91ede62d446aed37d23256e8938fc4c335:/examples/ux/Portal.js

diff --git a/examples/ux/Portal.js b/examples/ux/Portal.js
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+++ b/examples/ux/Portal.js
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+/*!
+ * Ext JS Library 3.3.1
+ * Copyright(c) 2006-2010 Sencha Inc.
+ * licensing@sencha.com
+ * http://www.sencha.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);
+    }
+});