An override of Ext.grid.column.ActionView which adds custom click events based on the actioncolumn's action configuration attribute
eg. The following actioncolumn item will fire an 'editpersonclick' event:
{
xtype:'actioncolumn',
width:50,
items: [{
icon: 'extjs-build/examples/shared/icons/fam/cog_edit.png',
tooltip: 'Edit',
action: 'editperson'
}]
}