xenadmin/XenAdmin/Commands/DeleteVMCommand.cs

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/* Copyright (c) Citrix Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using XenAdmin.Actions;
using XenAdmin.Core;
using XenAdmin.Dialogs;
using XenAPI;
using XenAdmin.Actions.VMActions;
namespace XenAdmin.Commands
{
/// <summary>
/// Deletes the selected VMs. Shows a confirmation dialog.
/// </summary>
internal class DeleteVMCommand : Command
{
/// <summary>
/// Initializes a new instance of this Command. The parameter-less constructor is required in the derived
/// class if it is to be attached to a ToolStrip menu item or button. It should not be used in any other scenario.
/// </summary>
public DeleteVMCommand()
{
}
public DeleteVMCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
: base(mainWindow, selection)
{
}
public DeleteVMCommand(IMainWindow mainWindow, SelectedItem selection)
: base(mainWindow, selection)
{
}
public DeleteVMCommand(IMainWindow mainWindow, VM vm)
: base(mainWindow, vm)
{
}
private AsyncAction GetAction(VM vm, List<VBD> deleteDisks, List<VM> deleteSnapshots)
{
return new VMDestroyAction(vm, deleteDisks, deleteSnapshots);
}
protected sealed override void ExecuteCore(SelectedItemCollection selection)
{
ConfirmVMDeleteDialog dialog = new ConfirmVMDeleteDialog(selection.AsXenObjects<VM>());
if (MainWindowCommandInterface.RunInAutomatedTestMode || dialog.ShowDialog(Parent) == DialogResult.Yes)
{
CommandErrorDialog errorDialog = null;
var cantExecuteReasons = GetCantExecuteReasons();
if (cantExecuteReasons.Count > 0)
{
errorDialog = new CommandErrorDialog(ErrorDialogTitle, ErrorDialogText, GetCantExecuteReasons());
}
List<AsyncAction> actions = new List<AsyncAction>();
foreach (VM vm in selection.AsXenObjects<VM>(CanExecute))
{
var snapshotsToDelete = dialog.DeleteSnapshots.FindAll(x => x.Connection.Resolve(x.snapshot_of) == vm);
actions.Add(GetAction(vm, dialog.DeleteDisks, snapshotsToDelete));
}
RunMultipleActions(actions, Messages.ACTION_VMS_DESTROYING_TITLE, Messages.ACTION_VM_DESTROYING, Messages.ACTION_VM_DESTROYED, true);
if (errorDialog != null)
{
errorDialog.ShowDialog(Parent);
}
}
}
protected virtual bool CanExecute(VM vm)
{
return vm != null && !vm.is_a_template && !vm.Locked && vm.allowed_operations != null && vm.allowed_operations.Contains(vm_operations.destroy);
}
protected sealed override bool CanExecuteCore(SelectedItemCollection selection)
{
return selection.AllItemsAre<VM>() && selection.AtLeastOneXenObjectCan<VM>(CanExecute);
}
public override string MenuText
{
get
{
if (GetSelection().Count > 1)
{
return Messages.MAINWINDOW_DELETE_OBJECTS;
}
return Messages.MAINWINDOW_DELETE_VM;
}
}
protected virtual string ErrorDialogText
{
get
{
return Messages.ERROR_DIALOG_DELETE_VM_TEXT;
}
}
protected virtual string ErrorDialogTitle
{
get
{
return Messages.ERROR_DIALOG_DELETE_VM_TITLE;
}
}
protected override string GetCantExecuteReasonCore(IXenObject item)
{
VM vm = item as VM;
if (vm == null)
{
return base.GetCantExecuteReasonCore(item);
}
if (!vm.is_a_template && vm.power_state != vm_power_state.Halted)
{
return Messages.VM_NOT_SHUT_DOWN;
}
else if (vm.is_a_template && vm.DefaultTemplate())
{
return Messages.CANNOT_DELETE_DEFAULT_TEMPLATE;
}
return base.GetCantExecuteReasonCore(item);
}
}
}