mirror of
https://github.com/xcp-ng/xenadmin.git
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305 lines
8.8 KiB
C#
305 lines
8.8 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.Drawing;
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using System.Windows.Forms;
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using XenAdmin.Dialogs.VMProtectionRecovery;
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using XenAPI;
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namespace XenAdmin.Dialogs
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{
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public partial class DRConfigureDialog : XenDialogBase
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{
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#region Private fields
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private int m_numberOfCheckedSrs;
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private bool m_drOriginallyEnabled;
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/// <summary>
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/// The user cannot select more than a certain number of SRs
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/// </summary>
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private const int MAX_SR_SELECTED = 8;
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/// <summary>
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/// Style to use for checkable rows
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/// </summary>
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private DataGridViewCellStyle regStyle;
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/// <summary>
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/// Style to use for non-checkable rows (should appear grayed out)
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/// </summary>
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private DataGridViewCellStyle dimmedStyle;
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#endregion
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public DRConfigureDialog(Pool pool)
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{
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InitializeComponent();
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Text = String.Format(Messages.DR_CONFIGURE_TITLE, pool.Name);
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pictureBoxWarning.Image = SystemIcons.Warning.ToBitmap();
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pictureBoxInfo.Image = SystemIcons.Information.ToBitmap();
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HideAllWarnings();
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//setup cell styles
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regStyle = m_dataGridView.DefaultCellStyle.Clone();
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dimmedStyle = m_dataGridView.DefaultCellStyle.Clone();
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dimmedStyle.ForeColor = SystemColors.GrayText;
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Pool = pool;
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}
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#region Accessors
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public Pool Pool { get; private set; }
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public Dictionary<string, SR> SRtoEnable = new Dictionary<string, SR>();
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public Dictionary<string, SR> SRtoDisable = new Dictionary<string, SR>();
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#endregion
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#region Private methods
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/// <summary>
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/// First time population of the control
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/// </summary>
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private void PopulateSrDataGridView()
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{
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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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foreach (var sr in Pool.Connection.Cache.SRs)
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{
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if (!sr.SupportsDatabaseReplication())
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continue;
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var row = new SrRow(sr, Pool);
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if (row.IsDrEnabled)
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{
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m_drOriginallyEnabled = true;
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m_numberOfCheckedSrs++;
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}
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m_dataGridView.Rows.Add(row);
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ToggleRowCheckable(row);
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}
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//set the width of the last column
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columnSpace.AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
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int storedWidth = columnSpace.Width;
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columnSpace.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
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columnSpace.MinimumWidth = storedWidth;
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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 ToggleRowsCheckableState()
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{
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foreach (DataGridViewRow row in m_dataGridView.Rows)
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ToggleRowCheckable(row as SrRow);
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}
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private void ToggleRowCheckable(SrRow row)
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{
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if (row == null)
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return;
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bool checkable = row.HasSpace && m_numberOfCheckedSrs < MAX_SR_SELECTED;
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//if it's already checked do not consider it
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if (IsRowChecked(row))
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return;
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row.Cells[0].ReadOnly = !checkable;
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row.DefaultCellStyle = checkable ? regStyle : dimmedStyle;
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}
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private bool IsRowChecked(SrRow row)
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{
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if (row == null)
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return false;
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var cell = row.Cells[0] as DataGridViewCheckBoxCell;
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return cell == null ? false : (bool)cell.Value;
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}
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private bool IsRowChecked(int rowIndex, out SrRow row)
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{
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row = m_dataGridView.Rows[rowIndex] as SrRow;
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return IsRowChecked(row);
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}
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private void ToggleWarningsVisibleState()
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{
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ToggleWarningsWrapper(() =>
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{
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if (m_drOriginallyEnabled && m_numberOfCheckedSrs == 0)
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ShowWarningOnDisable();
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else if (!m_drOriginallyEnabled && m_numberOfCheckedSrs > 0)
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ShowWarningOnEnable();
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else
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HideAllWarnings();
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});
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}
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private void ToggleWarningsWrapper(Action action)
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{
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if (action == null)
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return;
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try
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{
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m_tableLpWarning.SuspendLayout();
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action.Invoke();
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}
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finally
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{
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m_tableLpWarning.ResumeLayout();
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}
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}
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/// <summary>
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/// Use the ToggleWarningsWrapper to call this to avoid flickering
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/// </summary>
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private void ShowWarningOnEnable()
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{
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m_tableLpWarning.Visible = false;
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m_tableLpInfo.Visible = true;
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}
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/// <summary>
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/// Use the ToggleWarningsWrapper to call this to avoid flickering
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/// </summary>
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private void ShowWarningOnDisable()
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{
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m_tableLpWarning.Visible = true;
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m_tableLpInfo.Visible = false;
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}
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/// <summary>
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/// Use the ToggleWarningsWrapper to call this to avoid flickering
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/// </summary>
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private void HideAllWarnings()
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{
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m_tableLpWarning.Visible = false;
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m_tableLpInfo.Visible = true;
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}
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#endregion
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#region Control event handlers
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private void DRConfigureDialog_Load(object sender, EventArgs e)
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{
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PopulateSrDataGridView();
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}
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private void m_dataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
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{
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if (e.ColumnIndex != 0 || e.RowIndex < 0 || e.RowIndex > m_dataGridView.RowCount - 1)
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return;
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m_dataGridView.Rows[e.RowIndex].Cells[0].Value = !(bool)m_dataGridView.Rows[e.RowIndex].Cells[0].Value;
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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 - 1)
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return;
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SrRow srRow;
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if (IsRowChecked(e.RowIndex, out srRow))
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{
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m_numberOfCheckedSrs++;
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if (srRow != null && !srRow.IsDrEnabled && !SRtoEnable.ContainsKey(srRow.SR.opaque_ref))
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SRtoEnable.Add(srRow.SR.opaque_ref, srRow.SR);
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if (srRow != null && SRtoDisable.ContainsKey(srRow.SR.opaque_ref))
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SRtoDisable.Remove(srRow.SR.opaque_ref);
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}
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else
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{
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m_numberOfCheckedSrs--;
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if (srRow != null && srRow.IsDrEnabled && !SRtoDisable.ContainsKey(srRow.SR.opaque_ref))
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SRtoDisable.Add(srRow.SR.opaque_ref, srRow.SR);
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if (srRow != null && SRtoEnable.ContainsKey(srRow.SR.opaque_ref))
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SRtoEnable.Remove(srRow.SR.opaque_ref);
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}
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ToggleWarningsVisibleState();
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ToggleRowsCheckableState();
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}
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#endregion
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#region Nested Items
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private class SrRow : DataGridViewRow
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{
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public SrRow(SR sr, Pool pool)
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{
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SR = sr;
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var availableSpace = sr.FreeSpace;
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HasSpace = availableSpace > 0;
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foreach (var vdi in pool.Connection.Cache.VDIs)
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{
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if (vdi.type == vdi_type.metadata && vdi.metadata_of_pool.opaque_ref == pool.opaque_ref && vdi.SR.opaque_ref == sr.opaque_ref)
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{
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IsDrEnabled = true;
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break;
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}
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}
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var cellTick = new DataGridViewCheckBoxCell { Value = IsDrEnabled };
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var cellName = new DataGridViewTextAndImageCell { Value = sr.Name, Image = Images.GetImage16For(sr.GetIcon) };
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var cellDesc = new DataGridViewTextBoxCell { Value = sr.Description };
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var cellType = new DataGridViewTextBoxCell { Value = sr.FriendlyTypeName };
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var cellSpace = new DataGridViewTextBoxCell { Value = Util.DiskSizeString(availableSpace) };
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Cells.AddRange(cellTick, cellName, cellDesc, cellType, cellSpace);
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}
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public bool IsDrEnabled { get; private set; }
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public SR SR { get; private set; }
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public bool HasSpace { get; private set; }
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}
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#endregion
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}
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}
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