xenadmin/XenAdmin/Controls/ISODropDownBox.cs
Mihaela Stoica bd36a85bff CP-4816: Initial commit to git repo
Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
2013-06-24 12:41:48 +01:00

596 lines
20 KiB
C#

/* 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.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Text.RegularExpressions;
using XenAdmin;
using XenAdmin.Core;
using XenAdmin.Network;
using XenAPI;
using System.Runtime.InteropServices;
namespace XenAdmin.Controls
{
public partial class ISODropDownBox : LongStringComboBox
{
public VM vm;
protected VBD cdrom;
protected bool refreshOnClose = false;
protected bool changing = false;
private IXenConnection _connection;
protected bool physicalOnly = false;
protected bool isoOnly = false;
protected bool empty = false;
private bool _skipDown = false;
private VDI selectedCD;
public VDI SelectedCD
{
get { return SelectedItem == null ? null : (SelectedItem as ToStringWrapper<VDI>).item; }
set { selectedCD = value; }
}
public bool noTools = false;
public ISODropDownBox()
{
SR_CollectionChangedWithInvoke = Program.ProgramInvokeHandler(SR_CollectionChanged);
InitializeComponent();
}
public void RefreshSRs_()
{
BeginUpdate();
try
{
Items.Clear();
RefreshSRs();
}
finally
{
EndUpdate();
}
}
private static string srToString(SR sr)
{
return sr.Name;
}
public virtual void RefreshSRs()
{
Program.AssertOnEventThread();
if (Empty)
Items.Add(new ToStringWrapper<VDI>(null, Messages.EMPTY)); //Create a special VDIWrapper for the empty dropdown item
if (connection == null)
return;
List<ToStringWrapper<SR>> items = new List<ToStringWrapper<SR>>();
foreach (SR sr in connection.Cache.SRs)
{
if (sr.content_type != SR.Content_Type_ISO)
continue;
if (physicalOnly && !sr.Physical)
continue;
if (isoOnly && (sr.Physical || (noTools && sr.IsToolsSR)))
continue;
if (vm == null && sr.IsBroken())
continue;
if (vm != null)
{
if (vm.power_state == vm_power_state.Halted)
{
Host storageHost = vm.GetStorageHost(true);
// The storage host is the host that the VM is bound to because the VM is using local storage on that host.
// It will be null if there is no such host (i.e. the VM is not restricted host-wise by storage).
if (storageHost != null && !sr.CanBeSeenFrom(storageHost))
{
// The storage host was not null, and this SR can't be seen from that host: don't show the SR.
continue;
}
}
else
{
// If VM is running, only show SRs on its current host
Host runningOn = vm.Connection.Resolve(vm.resident_on);
if (!sr.CanBeSeenFrom(runningOn))
{
continue;
}
}
}
items.Add(new ToStringWrapper<SR>(sr, srToString));
}
if (items.Count > 0)
{
items.Sort();
foreach (ToStringWrapper<SR> srWrapper in items)
{
AddSR(srWrapper);
}
}
}
public virtual void SelectCD()
{
if (selectedCD == null)
{
if (Items.Count > 0)
this.SelectedIndex = 0;
else
this.SelectedIndex = -1;
return;
}
foreach (Object o in Items)
{
ToStringWrapper<VDI> vdiNameWrapper = o as ToStringWrapper<VDI>;
if (vdiNameWrapper == null)
continue;
XenAPI.VDI iso = vdiNameWrapper.item;
if (iso == null || !iso.Show(XenAdmin.Properties.Settings.Default.ShowHiddenVMs))
continue;
if (iso == selectedCD)
{
this.SelectedItem = o;
break;
}
}
}
// CA-12115
public bool HasSelectableItems
{
get
{
foreach (Object o in Items)
{
if (!(o is ToStringWrapper<SR>))
{
return true;
}
}
return false;
}
}
// TODO: this means only physical. refactor to mean display physical
public bool Physical
{
get
{
return physicalOnly;
}
set
{
physicalOnly = value;
}
}
// TODO: this means only iso. refactor to mean display iso
public bool ISO
{
get
{
return isoOnly;
}
set
{
isoOnly = value;
}
}
public bool Empty
{
get
{
return empty;
}
set
{
empty = value;
}
}
protected void AddSR(ToStringWrapper<SR> srWrapper)
{
Items.Add(srWrapper);
List<ToStringWrapper<VDI>> items = new List<ToStringWrapper<VDI>>();
if (srWrapper.item.Physical)
{
List<ToStringWrapper<VDI>> vdis = new List<ToStringWrapper<VDI>>();
foreach (VDI vdi in connection.ResolveAll<VDI>(srWrapper.item.VDIs))
{
ToStringWrapper<VDI> vdiWrapper = new ToStringWrapper<VDI>(vdi, vdi.Name);
vdis.Add(vdiWrapper);
}
vdis.Sort(new Comparison<ToStringWrapper<VDI>>(delegate(ToStringWrapper<VDI> object1, ToStringWrapper<VDI> object2)
{
return Core.StringUtility.NaturalCompare(object1.item.Name, object2.item.Name);
}));
Host host = srWrapper.item.GetStorageHost();
if (host != null)
{
for (int i = 0; i < vdis.Count; i++)
{
items.Add(new ToStringWrapper<VDI>(vdis[i].item, " " + string.Format(Messages.ISOCOMBOBOX_CD_DRIVE, i, host.Name)));
}
}
}
else
{
if (srWrapper.item.IsToolsSR)
{
foreach (VDI vdi in connection.ResolveAll<VDI>(srWrapper.item.VDIs))
{
if(Actions.InstallPVToolsAction.ISONameOld.Equals(vdi.name_label) ||
Actions.InstallPVToolsAction.ISONameNew.Equals(vdi.name_label))
items.Add(new ToStringWrapper<VDI>(vdi, " " + vdi.Name));
}
}
else
{
foreach (VDI vdi in connection.ResolveAll<VDI>(srWrapper.item.VDIs))
{
items.Add(new ToStringWrapper<VDI>(vdi, " " + vdi.Name));
}
items.Sort(new Comparison<ToStringWrapper<VDI>>(delegate(ToStringWrapper<VDI> object1, ToStringWrapper<VDI> object2)
{
return Core.StringUtility.NaturalCompare(object1.item.Name, object2.item.Name);
}));
}
}
foreach (ToStringWrapper<VDI> vdiWrapper in items)
{
Items.Add(vdiWrapper);
}
}
public int ISOCount
{
get
{
int i = 0;
foreach (object o in Items)
{
if (o is ToStringWrapper<VDI>)
i++;
}
return i;
}
}
public IXenConnection connection
{
set
{
if (_connection != null)
{
connection.Cache.DeregisterCollectionChanged<SR>(SR_CollectionChangedWithInvoke);
removeSRListeners();
}
_connection = value;
if (connection != null)
{
connection.Cache.RegisterCollectionChanged<SR>(SR_CollectionChangedWithInvoke);
addSRListeners();
refreshAll();
}
}
get
{
if (vm != null)
{
return vm.Connection;
}
else
{
return _connection;
}
}
}
protected void removeSRListeners()
{
foreach (SR sr in connection.Cache.SRs)
{
sr.PropertyChanged -= sr_PropertyChanged;
foreach (PBD pbd in connection.Cache.PBDs)
{
pbd.PropertyChanged -= pbd_PropertyChanged;
}
}
}
protected void addSRListeners()
{
foreach (SR sr in connection.Cache.SRs)
{
sr.PropertyChanged -= sr_PropertyChanged;
sr.PropertyChanged += sr_PropertyChanged;
foreach (PBD pbd in connection.Cache.PBDs)
{
pbd.PropertyChanged -= pbd_PropertyChanged;
pbd.PropertyChanged += pbd_PropertyChanged;
}
}
}
private readonly CollectionChangeEventHandler SR_CollectionChangedWithInvoke = null;
protected void SR_CollectionChanged(object sender, CollectionChangeEventArgs e)
{
Program.AssertOnEventThread();
if (vm == null || e.Action == CollectionChangeAction.Refresh)
return;
foreach (SR sr in connection.Cache.SRs)
{
sr.PropertyChanged -= sr_PropertyChanged;
sr.PropertyChanged += sr_PropertyChanged;
}
Program.Invoke(this, refreshAll);
}
public virtual void refreshAll()
{
if (!DroppedDown)
{
RefreshSRs_();
SelectCD();
refreshOnClose = false;
}
else
{
refreshOnClose = true;
}
}
private void sr_PropertyChanged(object sender1, PropertyChangedEventArgs e)
{
if (e.PropertyName == "VDIs" || e.PropertyName == "PBDs")
{
refreshAll();
}
}
private void pbd_PropertyChanged(object sender1, PropertyChangedEventArgs e)
{
if (e.PropertyName == "currently_attached")
{
refreshAll();
}
}
protected void cdrom_PropertyChanged(object sender1, PropertyChangedEventArgs e)
{
if ((e.PropertyName == "empty" || e.PropertyName == "vdi") && !changing)
{
SelectCD();
}
}
protected void vm_PropertyChanged(object sender1, PropertyChangedEventArgs e)
{
if (e.PropertyName == "VBDs" || e.PropertyName == "resident_on" || e.PropertyName == "affinity")
{
refreshAll();
}
}
// if we have selected an SR then we automatically select the first ISO on that SR
private void this_SelectedIndexChanged(object sender, EventArgs e)
{
skipSRs();
}
protected override void OnSelectionChangeCommitted(EventArgs e)
{
skipSRs();
base.OnSelectionChangeCommitted(e);
if (SelectedItem != null)
selectedCD = (SelectedItem as ToStringWrapper<VDI>).item;
}
private void skipSRs()
{
int i = SelectedIndex;
if (!HasSelectableItems || i == -1)
{
SelectedIndex = -1;
return;
}
// Find the next selectable item in the appropriate (up/down) direction
while (true)
{
if (i == 0)
{
_skipDown = true;
}
else if (i == Items.Count - 1)
{
_skipDown = false;
}
if (Items[i] is ToStringWrapper<SR>)
{
i += _skipDown ? 1 : -1;
}
else
{
_skipDown = true;
break;
}
}
SelectedIndex = i;
}
// CA-12115
// The up and down arrow keys cause the combobox to change selection to the next
// or previous in the list. The page up and page down keys change the selection
// by one page at a time as defined by the size of the dropdown list. We need to
// make sure that when we arrow up or down that the item selection jumps over the
// bold SR read-only group separator. We will change the skip direction here.
// Also the left and right arrows should navigate through list in the same way
// as the up and down arrows (CA-40779)
protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyCode == Keys.Up || e.KeyCode == Keys.PageUp || e.KeyCode == Keys.Left)
{
_skipDown = false;
}
else
{
_skipDown = true;
}
base.OnKeyDown(e);
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
if (e.Index != -1)
{
Object o = Items[e.Index];
if (o is ToStringWrapper<SR>)
{
e.DrawBackground();
Drawing.DrawText(e.Graphics, o.ToString(), Program.DefaultFontBold, e.Bounds, SystemColors.ControlText, TextFormatFlags.VerticalCenter | TextFormatFlags.EndEllipsis);
}
else
{
if ((e.State & DrawItemState.Selected) != 0)
{
e.DrawBackground();
Drawing.DrawText(e.Graphics, o.ToString(), Program.DefaultFont, e.Bounds, e.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.EndEllipsis);
}
else if((e.State & DrawItemState.Disabled) != 0)
{
e.DrawBackground();
Drawing.DrawText(e.Graphics, o.ToString(), Program.DefaultFont, e.Bounds, SystemColors.GrayText, TextFormatFlags.VerticalCenter | TextFormatFlags.EndEllipsis);
}
else
{
e.DrawBackground();
Drawing.DrawText(e.Graphics, o.ToString(), Program.DefaultFont, e.Bounds, e.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.EndEllipsis);
}
e.DrawFocusRectangle();
}
}
base.OnDrawItem(e);
}
protected override void OnDropDownClosed(EventArgs e)
{
skipSRs();
base.OnDropDownClosed(e);
if (refreshOnClose)
refreshAll();
}
// we need to prevent the mouse click occuring when the user clicks on certain objects
// the combo box creates another window for the dropdown list so we cannot use it's wndproc
// when this other window is created at run time we get told the window handle (LParam on WM_PARENTNOTIFY)
// so we then replace this window's wndproc with our own (ReplacementWndProc)
private IntPtr oldWndProc = IntPtr.Zero;
private Win32.WndProcDelegate newWndProc;
private IntPtr DropDownHandle = IntPtr.Zero;
protected override void WndProc(ref System.Windows.Forms.Message m)
{
switch (m.Msg)
{
case Win32.WM_PARENTNOTIFY:
DropDownHandle = m.LParam;
oldWndProc = Win32.GetWindowLong(DropDownHandle, Win32.GWL_WNDPROC);
newWndProc = new Win32.WndProcDelegate(ReplacementWndProc);
Win32.SetWindowLong(DropDownHandle, Win32.GWL_WNDPROC, Marshal.GetFunctionPointerForDelegate(newWndProc));
break;
}
base.WndProc(ref m);
}
private IntPtr ReplacementWndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
{
if (msg == (uint)Win32.WM_LBUTTONDOWN || msg == (uint)Win32.WM_LBUTTONDBLCLK)
{
Win32.POINT loc = new Win32.POINT();
loc.X = MousePosition.X;
loc.Y = MousePosition.Y;
Win32.ScreenToClient(DropDownHandle, ref loc);
Win32.RECT dropdown_rect = new Win32.RECT();
Win32.GetClientRect(DropDownHandle, out dropdown_rect);
if (dropdown_rect.Left <= loc.X && loc.X < dropdown_rect.Right && dropdown_rect.Top <= loc.Y && loc.Y < dropdown_rect.Bottom)
{
int index = (int)Win32.SendMessage(DropDownHandle, Win32.LB_ITEMFROMPOINT, IntPtr.Zero, (IntPtr)(loc.X + (loc.Y << 16)));
if (index >> 16 == 0)
{
Object o = Items[index];
if (o is ToStringWrapper<SR>)
return IntPtr.Zero;
}
}
}
return Win32.CallWindowProc(oldWndProc, hWnd, msg, wParam, lParam);
}
}
}