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https://github.com/xcp-ng/xenadmin.git
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7a1b1a6dcc
override in derived classes, enforce it by wrapping the page specific code in a new virtual method, which the derived classes can override and PageLeave can call before its own logic. Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
403 lines
12 KiB
C#
403 lines
12 KiB
C#
/* Copyright (c) Citrix Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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using XenAdmin.Commands;
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using XenAdmin.Controls.Common;
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using XenAdmin.Core;
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using XenAPI;
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using XenAdmin.Controls;
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using XenCenterLib;
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namespace XenAdmin.Wizards.ExportWizard
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{
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/// <summary>
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/// Class representing the page of the ExportAppliance wizard where the user specifies
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/// the VMs to be included in the exported appliance
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/// </summary>
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internal partial class ExportSelectVMsPage : XenTabPage
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{
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#region Nested classes
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private static class NativeMethods
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{
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[DllImport("Kernel32", SetLastError = true, CharSet = CharSet.Unicode)]
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internal static extern bool GetDiskFreeSpaceEx(string lpszPath, ref long lpFreeBytesAvailable, ref long lpTotalNumberOfBytes, ref long lpTotalNumberOfFreeBytes);
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}
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#endregion
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private bool m_buttonNextEnabled;
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public ExportSelectVMsPage()
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{
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InitializeComponent();
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m_tlpWarning.Visible = false;
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VMsToExport = new List<VM>();
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}
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#region Accessors
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/// <summary>
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/// Gets a list of the VMs that will be included in the exported appliance
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/// </summary>
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public List<VM> VMsToExport { get; private set; }
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public string ApplianceDirectory { get; set; }
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/// <summary>
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/// The items selected on the main window treeview when the wizard was launched.
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/// These determine the VMs selected by default.
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/// </summary>
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public SelectedItemCollection SelectedItems { private get; set; }
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public bool ExportAsXva { private get; set; }
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#endregion
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#region Base class (XenTabPage) overrides
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/// <summary>
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/// Gets the page's title (headline)
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/// </summary>
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public override string PageTitle { get { return ExportAsXva ? Messages.EXPORT_SELECTVMS_PAGE_TITLE_XVA : Messages.EXPORT_SELECTVMS_PAGE_TITLE_OVF; } }
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/// <summary>
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/// Gets the page's label in the (left hand side) wizard progress panel
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/// </summary>
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public override string Text { get { return Messages.EXPORT_SELECTVMS_PAGE_TEXT; } }
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/// <summary>
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/// Gets the value by which the help files section for this page is identified
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/// </summary>
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public override string HelpID { get { return ExportAsXva ? "SelectVMsXva" : "SelectVMsOvf"; } }
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protected override bool ImplementsIsDirty()
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{
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return true;
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}
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public override void PageLoaded(PageLoadedDirection direction)
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{
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base.PageLoaded(direction); //call first so the page gets populated
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m_ctrlError.HideError();
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EnableButtons();
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}
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protected override void PageLeaveCore(PageLoadedDirection direction, ref bool cancel)
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{
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if (direction == PageLoadedDirection.Forward && IsDirty)
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cancel = !PerformCheck(CheckSpaceRequirements);
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}
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public override void PopulatePage()
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{
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var pool = Helpers.GetPoolOfOne(Connection);
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label2.Text = string.Format(Helpers.IsPool(pool.Connection) ? Messages.VMS_IN_POOL : Messages.VMS_IN_SERVER,
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pool.Name().Ellipsise(60));
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VMsToExport.Clear();
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try
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{
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m_dataGridView.SuspendLayout();
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m_dataGridView.Rows.Clear();
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var applianceVMs = new List<XenRef<VM>>();
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if (SelectedItems != null && SelectedItems.FirstIs<VM_appliance>())
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applianceVMs.AddRange(((VM_appliance)SelectedItems.FirstAsXenObject).VMs);
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foreach (var vm in Connection.Cache.VMs.Where(vm => IsVmExportable(vm) && MatchesSearchText(vm)))
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{
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VM curVm = vm;//closure below
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bool selected = SelectedItems != null
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&& (SelectedItems.AsXenObjects().Contains(vm) || applianceVMs.FirstOrDefault(xenref => xenref.opaque_ref == curVm.opaque_ref) != null);
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m_dataGridView.Rows.Add(GetDataGridViewRow(vm, selected));
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if (selected)
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VMsToExport.Add(vm);
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}
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m_dataGridView.Sort(columnTick, ListSortDirection.Descending);
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}
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finally
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{
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m_dataGridView.ResumeLayout();
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}
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UpdateCounterLabel();
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EnableButtons();
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}
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public override bool EnableNext()
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{
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return m_buttonNextEnabled;
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}
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#endregion
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#region Private methods
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/// <summary>
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/// Performs certain checks on the pages's input data and shows/hides an error accordingly
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/// </summary>
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/// <param name="checks">The checks to perform</param>
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private bool PerformCheck(params CheckDelegate[] checks)
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{
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m_buttonNextEnabled = m_ctrlError.PerformCheck(checks);
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OnPageUpdated();
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return m_buttonNextEnabled;
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}
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private bool IsVmExportable(VM vm)
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{
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if (!vm.is_a_real_vm())
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return false;
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if (!vm.Show(Properties.Settings.Default.ShowHiddenVMs))
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return false;
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if (vm.power_state != vm_power_state.Halted && vm.power_state != vm_power_state.Suspended)
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return false;
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if (vm.Locked)
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return false;
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return vm.allowed_operations != null && vm.allowed_operations.Contains(vm_operations.export);
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}
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private bool MatchesSearchText(VM vm)
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{
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return m_searchTextBox.Matches(vm.Name());
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}
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private DataGridViewRow GetDataGridViewRow(VM vm, bool selected)
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{
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var row = new DataGridViewRow {Tag = vm};
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var vmAppliance = Connection.Resolve(vm.appliance);
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long totalVmSize = GetTotalVmSize(vm);
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row.Cells.AddRange(new DataGridViewCell[]
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{
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new DataGridViewCheckBoxCell {Value = selected},
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new DataGridViewTextBoxCell {Value = vm.Name()},
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new DataGridViewTextBoxCell {Value = vm.Description()},
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new DataGridViewTextBoxCell {Value = Util.DiskSizeString(totalVmSize), Tag = totalVmSize},
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new DataGridViewTextBoxCell {Value = vmAppliance == null ? Messages.NONE : vmAppliance.Name()}
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});
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return row;
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}
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private long GetTotalVmSize(VM vm)
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{
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long virtualSize = 0;
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foreach (var vbdRef in vm.VBDs)
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{
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var vbd = Connection.Resolve(vbdRef);
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if (vbd == null)
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continue;
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if (vbd.type == vbd_type.CD)
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continue;
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VDI vdi = Connection.Resolve(vbd.VDI);
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if (vdi == null)
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continue;
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virtualSize += vdi.virtual_size;
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}
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return virtualSize;
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}
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private bool CheckSpaceRequirements(out string errorMsg)
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{
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errorMsg = string.Empty;
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long spaceNeeded = 0;
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foreach (DataGridViewRow row in m_dataGridView.Rows)
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{
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if ((bool)row.Cells[0].Value)
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spaceNeeded += (long)row.Cells[3].Tag;
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}
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long availableSpace = GetFreeSpace(ApplianceDirectory);
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if (spaceNeeded > availableSpace)
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{
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errorMsg = String.Format(Messages.EXPORT_SELECTVMS_PAGE_ERROR_TARGET_SPACE_NOT_ENOUGH, Util.DiskSizeString(availableSpace), Util.DiskSizeString(spaceNeeded));
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//Log.Error(Messages.EXPORT_SELECTVMS_PAGE_ERROR_TargeSpaceNotEnough);
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return false;
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}
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return true;
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}
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//TODO: improve method
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private long GetFreeSpace(string drivename)
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{
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if (!drivename.EndsWith(@"\"))
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drivename += @"\";
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long space = 0;
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long lpTotalNumberOfBytes = 0;
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long lpTotalNumberOfFreeBytes = 0;
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if (NativeMethods.GetDiskFreeSpaceEx(drivename, ref space, ref lpTotalNumberOfBytes, ref lpTotalNumberOfFreeBytes))
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return space;
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return -1;
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}
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private void EnableButtons()
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{
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var count = VMsToExport.Count;
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m_tlpWarning.Visible = ExportAsXva && count > 1;
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m_buttonNextEnabled = ExportAsXva ? count == 1 : count > 0;
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m_buttonClearAll.Enabled = count > 0;
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m_buttonSelectAll.Enabled = count < m_dataGridView.RowCount;
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OnPageUpdated();
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}
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private void UpdateCounterLabel()
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{
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var count = VMsToExport.Count;
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m_labelCounter.Text = count == 1 ? Messages.ONE_VM_SELECTED : string.Format(Messages.MOREONE_VM_SELECTED, count);
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}
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#endregion
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#region Control event handlers
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private void m_buttonSelectAll_Click(object sender, EventArgs e)
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{
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foreach (DataGridViewRow dataGridViewRow in m_dataGridView.Rows)
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{
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dataGridViewRow.Cells[0].Value = true;
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var vm = dataGridViewRow.Tag as VM;
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if (vm != null && !VMsToExport.Contains(vm))
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VMsToExport.Add(vm);
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}
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}
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private void m_buttonClearAll_Click(object sender, EventArgs e)
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{
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//clear all visible ones
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foreach (DataGridViewRow dataGridViewRow in m_dataGridView.Rows)
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{
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dataGridViewRow.Cells[0].Value = false;
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var vm = dataGridViewRow.Tag as VM;
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if (vm != null)
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VMsToExport.Remove(vm);
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}
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}
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private void m_searchTextBox_TextChanged(object sender, EventArgs e)
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{
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try
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{
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var sortedColumn = m_dataGridView.SortedColumn;
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var sortOrder = m_dataGridView.SortOrder;
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m_dataGridView.SuspendLayout();
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m_dataGridView.Rows.Clear();
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foreach (var vm in Connection.Cache.VMs.Where(IsVmExportable))
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{
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if (MatchesSearchText(vm))
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m_dataGridView.Rows.Add(GetDataGridViewRow(vm, VMsToExport.Contains(vm)));
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}
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if (sortOrder != SortOrder.None && sortedColumn != null)
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m_dataGridView.Sort(sortedColumn, (sortOrder == SortOrder.Ascending) ? ListSortDirection.Ascending : ListSortDirection.Descending);
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}
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finally
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{
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m_dataGridView.ResumeLayout();
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}
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}
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private void m_dataGridView_CurrentCellDirtyStateChanged(object sender, EventArgs e)
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{
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if (m_dataGridView.IsCurrentCellDirty)
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m_dataGridView.CommitEdit(DataGridViewDataErrorContexts.Commit);
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}
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private void m_dataGridView_CellValueChanged(object sender, DataGridViewCellEventArgs e)
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{
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if (e.ColumnIndex != 0 || e.RowIndex < 0 || e.RowIndex >= m_dataGridView.RowCount)
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return;
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var row = m_dataGridView.Rows[e.RowIndex];
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var vm = row.Tag as VM;
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if (vm != null)
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{
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if ((bool)row.Cells[0].Value)
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{
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if (!VMsToExport.Contains(vm))
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VMsToExport.Add(vm);
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}
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else
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VMsToExport.Remove(vm);
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}
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m_ctrlError.HideError();
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UpdateCounterLabel();
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IsDirty = true;
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EnableButtons();
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}
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private void m_dataGridView_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)
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{
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if ((e.Row.State & DataGridViewElementStates.Selected) != 0)
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e.Row.Selected = false;
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}
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private void m_dataGridView_SortCompare(object sender, DataGridViewSortCompareEventArgs e)
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{
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if (e.Column == columnSize)
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{
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e.SortResult = StringUtility.NaturalCompare(e.CellValue1.ToString(), e.CellValue2.ToString());
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e.Handled = true;
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}
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}
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#endregion
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}
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}
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