Combobox "losts" the Store...

[g2mac]

Hi,
i'm working with Combobox with mode 'remote' in Grid with RowEditor plugin. Grid is in Window. When I first time open window all is ok. But after I close window and try to open it again I get an error message in Firebug:
this.store is null
[IMG]chrome://firebug/content/blank.gif[/IMG] if(this.store.getCount() > 0){\n (ext-all-debug.js (Zeile 32918))

Why? Thank's for your help!
Here is my code:

Ext.util.Format.comboRenderer = function(combo){
    return function(value){
        var record = combo.findRecord(combo.valueField, value);
        return record ? record.get(combo.displayField) : combo.valueNotFoundText;
    }
}

var Combo = new Ext.form.ComboBox({
    editable: false,
    //typeAhead: true,
    triggerAction: 'all',
    lazyRender:true,
    listClass: 'x-combo-list-small',
    displayField: 'item',
    valueField: 'id',
    store: new Ext.data.ArrayStore({
        autoLoad: true,
        restful: true,
        idIndex: 0,
        fields: ['id','item'],
        url: '/fm/combo/599',
        listeners: {
            load: function(store,rs) {
                      alert("Loaded: "+rs.length);
            }
        }
    }
});

.... I use Web Desktop sample...
 createWindow : function(src){                 
        var desktop = this.app.getDesktop();
        var win = desktop.getWindow('bogus'+src.tableId);
        if(!win){
            alert(Combo.store.getCount());  // gets 3 - store is Ok!
            var gridCfg = {
                id: 'table'+src.tableId, 
                store: new Ext.data.Store({
                    storeId: 'store'+src.tableId,
                    autoLoad: true,
                    restful: true,    
                    proxy: new Ext.data.HttpProxy({
                        url: '/fm/tables/'+src.tableId,
                        restful: true
                    }),
                    reader: new Ext.data.JsonReader({root:'data'}),
                    writer: new Ext.data.JsonWriter()
                }),
                cm: new Ext.grid.ColumnModel({
                    defaults: {
                        sortable: true
                    },
                    columns: src.cm
                   /* part of src.cm:
                      ...
                      header: 'Status',
                      dataIndex: 'status_id',
                      editor: Combo,
                      renderer: Ext.util.Format.comboRenderer(Combo)
                      ....
                   */  
                }),
                view: new Ext.ux.BufferView({
                    rowHeight: 21,
                    scrollDelay: false,
                    markDirty: false
                }),
                iconCls: ''
            };
            win = desktop.createWindow({
                id: 'bogus'+src.tableId,
                title:src.text,
                width:640,
                height:200,
                iconCls: 'bogus',
                shim:false,
                animCollapse:false,
                constrainHeader:true,
                layout: 'fit',
                items: new Ext.grid.GridPanel(gridCfg)
            });
        }
        win.show();

[momospeedracer]

I currently have the same problem as you.

I am using a combobox inside a grid inside a formpanel and when the formpanel is rendered first time, everything is okay. However, when the formpanel is closed (autoDestroy: true on formpanel) and a new formpanel is opened, I get the same error on that combobox.

[Condor]

Destoying a window will destroy all component inside. You'll have to recreate all component when you create the window again.

(move the Combo creation inside the createWindow method)

[g2mac]

Destoying a window will destroy all component inside. You'll have to recreate all component when you create the window again.

But why hasn't window destroyed Combo object? After recreation the window I get in my alert(Combo)==Object;

[Condor]

'destroy' doesn't mean 'remove', it just mean 'cleanup'.

The Combo object still exists (because you hold a reference to it), but it is unusable and it will be removed by the garbage collector as soon as you release the reference to it (e.g. set Combo = null).

[g2mac]

Oh, I didn't know that )) Thanks a lot!

[momospeedracer]

'destroy' doesn't mean 'remove', it just mean 'cleanup'.

The Combo object still exists (because you hold a reference to it), but it is unusable and it will be removed by the garbage collector as soon as you release the reference to it (e.g. set Combo = null).

I scratched my head for about a day on that until it clicked.

Ultimately, I ended up re-assigning the store to the comboboxes and the issue was solved.