internal static int ProcessMessage(int messageType, int recordHandle)
{
if (EmbeddedUIProxy.uiInstance != null)
{
try
{
int msgType = messageType & 0x7F000000;
int buttons = messageType & 0x0000000F;
int icon = messageType & 0x000000F0;
int defButton = messageType & 0x00000F00;
Record msgRec = (recordHandle != 0 ? Record.FromHandle((IntPtr)recordHandle, false) : null);
using (msgRec)
{
if (EmbeddedUIProxy.DebugBreakEnabled("ProcessMessage"))
{
System.Diagnostics.Debugger.Launch();
}
return((int)EmbeddedUIProxy.uiInstance.ProcessMessage(
(InstallMessage)msgType,
msgRec,
(MessageButtons)buttons,
(MessageIcon)icon,
(MessageDefaultButton)defButton));
}
}
catch (Exception)
{
// Ignore it... just hope future messages will not throw exceptions.
}
}
return(0);
}
internal static void Shutdown()
{
if (EmbeddedUIProxy.uiInstance != null)
{
try
{
if (EmbeddedUIProxy.DebugBreakEnabled("Shutdown"))
{
System.Diagnostics.Debugger.Launch();
}
EmbeddedUIProxy.uiInstance.Shutdown();
}
catch (Exception)
{
// Nothing to do at this point... the installation is done anyway.
}
EmbeddedUIProxy.uiInstance = null;
}
}
internal static int Initialize(int sessionHandle, string uiClass, int internalUILevel)
{
Session session = null;
try
{
session = new Session((IntPtr)sessionHandle, false);
if (String.IsNullOrEmpty(uiClass))
{
throw new ArgumentNullException("uiClass");
}
EmbeddedUIProxy.uiInstance = EmbeddedUIProxy.InstantiateUI(session, uiClass);
}
catch (Exception ex)
{
if (session != null)
{
try
{
session.Log("Exception while loading embedded UI:");
session.Log(ex.ToString());
}
catch (Exception)
{
}
}
}
if (EmbeddedUIProxy.uiInstance == null)
{
return((int)ActionResult.Failure);
}
try
{
string resourcePath = Path.GetDirectoryName(EmbeddedUIProxy.uiInstance.GetType().Assembly.Location);
InstallUIOptions uiOptions = (InstallUIOptions)internalUILevel;
if (EmbeddedUIProxy.DebugBreakEnabled("Initialize"))
{
System.Diagnostics.Debugger.Launch();
}
if (EmbeddedUIProxy.uiInstance.Initialize(session, resourcePath, ref uiOptions))
{
// The embedded UI initialized and the installation should continue
// with internal UI reset according to options.
return(((int)uiOptions) << 16);
}
else
{
// The embedded UI did not initialize but the installation should still continue
// with internal UI reset according to options.
return((int)uiOptions);
}
}
catch (InstallCanceledException)
{
// The installation was canceled by the user.
return((int)ActionResult.UserExit);
}
catch (Exception ex)
{
// An unhandled exception causes the installation to fail immediately.
session.Log("Exception thrown by embedded UI initialization:");
session.Log(ex.ToString());
return((int)ActionResult.Failure);
}
}