private bool CanExecute(VBD vbd)
{
VDI vdi = vbd.Connection.Resolve <VDI>(vbd.VDI);
VM vm = vbd.Connection.Resolve <VM>(vbd.VM);
if (vm == null || vm.not_a_real_vm() || vdi == null || vdi.Locked || vbd.Locked)
{
return(false);
}
if (vm.power_state != vm_power_state.Running)
{
return(false);
}
if (vdi.type == vdi_type.system && vbd.GetIsOwner())
{
return(false);
}
if (AreIODriversNeededAndMissing(vm))
{
return(false);
}
if (!vbd.currently_attached)
{
return(false);
}
return(vbd.allowed_operations.Contains(vbd_operations.unplug));
}
protected override string GetCantExecuteReasonCore(SelectedItem item)
{
VBD vbd = item.XenObject as VBD;
if (vbd == null)
{
return(base.GetCantExecuteReasonCore(item));
}
VDI vdi = vbd.Connection.Resolve <VDI>(vbd.VDI);
VM vm = vbd.Connection.Resolve <VM>(vbd.VM);
if (vm == null || vm.not_a_real_vm() || vdi == null)
{
return(base.GetCantExecuteReasonCore(item));
}
SR sr = vdi.Connection.Resolve <SR>(vdi.SR);
if (sr == null)
{
return(Messages.SR_COULD_NOT_BE_CONTACTED);
}
if (vdi.Locked)
{
var vdiType = vdi.VDIType();
return(vdiType == VDI.FriendlyType.SNAPSHOT
? Messages.CANNOT_DEACTIVATE_SNAPSHOT_IN_USE
: vdiType == VDI.FriendlyType.ISO
? Messages.CANNOT_DEACTIVATE_ISO_IN_USE
: Messages.CANNOT_DEACTIVATE_VDI_IN_USE);
}
if (vm.power_state != vm_power_state.Running)
{
return(string.Format(
Messages.CANNOT_DEACTIVATE_VDI_VM_NOT_RUNNING,
Helpers.GetName(vm).Ellipsise(50)));
}
if (vdi.type == vdi_type.system && vbd.GetIsOwner())
{
return(Messages.TOOLTIP_DEACTIVATE_SYSVDI);
}
if (AreIODriversNeededAndMissing(vm))
{
return(string.Format(
vm.HasNewVirtualisationStates() ? Messages.CANNOT_DEACTIVATE_VDI_NEEDS_IO_DRIVERS : Messages.CANNOT_DEACTIVATE_VDI_NEEDS_TOOLS,
Helpers.GetName(vm).Ellipsise(50)));
}
if (!vbd.currently_attached)
{
return(string.Format(Messages.CANNOT_DEACTIVATE_NOT_ACTIVE, Helpers.GetName(vm).Ellipsise(50)));
}
return(base.GetCantExecuteReasonCore(item));
}