Hey man I forked your fiddle and made some change that I think solve your problem:
https://fiddle.sencha.com/#view/editor&fiddle/27ua
Basically I added a viewConfig to the grid with a cellclick event listener. The cellclick event fires first; in the event handler we check the value of the cellIndex parameter in order to determine which grid column was clicked to fire the event. We then set the value of our flag variable to the cellIndex value, so we can access that value in the beforedeselect event handler of the selection model. Finally we return false from the beforedeselectif the value of the flag is anything other than 0.
Here's the code:
var store = Ext.create('Ext.data.Store', {
fields: ['name', 'email', 'region'],
data: [{
name: 'xyz',
email: '[email protected]',
region: 'Arizona'
}, {
name: 'xyz',
email: '[email protected]',
region: 'Alaska'
}, {
name: 'xyz',
email: '[email protected]',
region: 'Alaska'
}, {
name: 'xyz',
email: '[email protected]',
region: 'Alabama'
}]
});
var states = Ext.create('Ext.data.Store', {
fields: ['abbr', 'name'],
data: [{
"abbr": "AL",
"name": "Alabama"
}, {
"abbr": "AK",
"name": "Alaska"
}, {
"abbr": "AZ",
"name": "Arizona"
}]
});
var targetedCell = -1;
Ext.create('Ext.grid.Panel', {
id: 'theGrid',
viewConfig: {
listeners: {
cellclick: function(view, cell, cellIdx, record, row, rowIdx, eOpts) {
targetedCell = cellIdx;
}
}
},
title: 'data',
store: store,
width: 400,
renderTo: Ext.getBody(),
selModel: new Ext.selection.CheckboxModel({
checkOnly: true,
listeners: {
beforedeselect: function (thisSelModel, record, idx, eOpts) {
if(targetedCell != 0) {
return false;
}
return true;
}
}
}),
columns: [{
text: 'Name',
dataIndex: 'name',
}, {
text: 'Email',
dataIndex: 'email',
flex: 1,
}, {
text: 'State',
dataIndex: 'region',
editor: {
xtype: 'combo',
store: states,
displayField: 'name',
valueField: 'name',
listeners: {}
}
}],
plugins: {
ptype: 'cellediting',
clicksToEdit: 1
}
});