JavaScript [ExtJs3]: GridPanel state restore Issue

Found a defect in ExtJs 3.3.0 for GridPanel state restoring which had reported on sencha forum.
There was couple of fix suggested but below one worked for me.

//http://goo.gl/5tVV7
Ext.override(Ext.grid.ColumnModel, {
    setState: function (col, state) {
        Ext.apply(this.lookup[col], state);
    }
});

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ERROR: Ignored call to 'alert()'. The document is sandboxed, and the 'allow-modals' keyword is not set.

Recently I found this issue while writing code snippet in "JSFiddle". And after searching, found this was happening because of new feature added in "Chrome 46+". But at the same time Chrome doesn't have support for "allow-modals" property in "sandbox" attribute.

Chromium issue for above behavior:
https://codereview.chromium.org/1126253007

To make it work you have to add "allow-scripts allow-modals" in "sandbox" attribute, and use "window.alert" instead of "alert".

 <iframe sandbox="allow-scripts allow-modals" src="iframe.html"> </iframe>

Feature added: Block modal dialog inside a sandboxed iframe.
Link: https://www.chromestatus.com/feature/4747009953103872

Feature working Demo page:
https://googlechrome.github.io/samples/block-modal-dialogs-sandboxed-iframe/index.html

JavaScript [ExtJs3]: EditorGridPanel Read-Only (dynamically)

Many time we face the scenerio where we have to make the editor grid read-only dynamically.

Ext.override(Ext.ux.grid.CheckColumn, { editable: true, onMouseDown: function (e, t) { if (Ext.fly(t).hasClass(this.createId())) { e.stopEvent(); var me = this, grid = me.grid, view = grid.getView(), index = view.findRowIndex(t), colindex = view.findCellIndex(t), record = grid.store.getAt(index); if (!grid.isReadOnly && grid.colModel.isCellEditable(colindex, index)) { record.set(me.dataIndex, !record.data[me.dataIndex]); } } } }); var grid = new Ext.grid.EditorGridPanel({ ... isReadOnly: true, //set to flag to make check column readonly ... }); //to make other column readonly grid.on('beforeedit', function () { return false; });

JavaScript [ExtJs3]: Total “Record” count in filtered store

There is two way to get record count from the Store
store.getTotalCount() This function depend on server response value. For accuracy of the value, property shell if return by the server.

Property name for the diff. reader:
totalProperty for JsonReader, totalRecords for XmlReaderstore.getCount() Will return you the number of record from the store.
Or if you have filter on the store, it will give you the number of filtered record.
But if you want to get the total number of record regardless filtering, Then it will be like this

var totalRecords = store.snapshot ? store.snapshot.length : store.getCount();
“snapshot” is the variable in “Store” which hold the actual data in case if you have applied a filter.

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