Common.UninstallOldPackage.wxi

<?xml version="1.0" encoding="UTF-8"?>
<Include
	xmlns="http://wixtoolset.org/schemas/v4/wxs"
>

	<?ifndef OldPackageProperty?>
	<?define OldPackageProperty="ORIGINAL$(var.OldPackageId)PACKAGEUNINSTALLER"?>
	<?endif?>
	<?ifndef OldPackageUninstallAction?>
	<?define OldPackageUninstallAction="UninstallOriginal$(var.OldPackageId)Package"?>
	<?endif?>
	<?ifndef OldPackageUninstallerArgs?>
	<?define OldPackageUninstallerArgs="/SILENT /NORESTART /SUPPRESSMSGBOXES"?>
	<?endif?>

	<?define OldPackageUninstallActionCondition="($(var.OldPackageProperty)) And (Not REMOVE) And (Not DONTUNINSTALLORIGINALPACKAGE)"?>

	<Property Id="$(var.OldPackageProperty)">
		<?ifdef OldPackageUninstallerFileName?>
			<RegistrySearch
				Id="Original$(var.OldPackageId)PackageUninstaller"
				Root="HKLM"
				Key="SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$(var.OldPackageUninstallerId)"
				Name="UninstallString"
				Type="file"
			>
				<FileSearch Name="$(var.OldPackageUninstallerFileName)"/>
			</RegistrySearch>
		<?else?>
			<RegistrySearch
				Id="Original$(var.OldPackageId)PackageUninstaller"
				Root="HKLM"
				Key="SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\$(var.OldPackageUninstallerId)"
				Name="UninstallString"
				Type="raw"
			>
			</RegistrySearch>
		<?endif?>
	</Property>

	<CustomAction
		Id="$(var.OldPackageUninstallAction)"
		Property="$(var.OldPackageProperty)"
		ExeCommand="$(var.OldPackageUninstallerArgs)"
		Impersonate="no"
		Execute="deferred"
		Return="ignore"
	/>
	<UI>
		<ProgressText Action="$(var.OldPackageUninstallAction)">!(loc.UninstallOriginalPackage)</ProgressText>
	</UI>

	<PropertyRef Id="DONTUNINSTALLORIGINALPACKAGE"/>

	<InstallExecuteSequence>
		<Custom
			Action="$(var.OldPackageUninstallAction)"
			After="InstallInitialize"
		><![CDATA[$(var.OldPackageUninstallActionCondition)]]></Custom>
	</InstallExecuteSequence>

	<?ifdef OldPackageUninstallerPause?>
	<!-- для Inno Setup требуется пауза между деинсталляторами. Вставляем паузу. -->

	<CustomAction
		Id="SleepAfter$(var.OldPackageUninstallAction)"
		Script="jscript"
		Impersonate="no"
		Execute="deferred"
		Return="ignore"
	>
		<![CDATA[
			var wshShell = new ActiveXObject( "WScript.Shell" );
			wshShell.Run( "\"%COMSPEC%\" /c ping -n $(var.OldPackageUninstallerPause) localhost ", 0, 1 )
		]]>
	</CustomAction>
	<UI>
		<ProgressText Action="SleepAfter$(var.OldPackageUninstallAction)">!(loc.UninstallOriginalPackage)</ProgressText>
	</UI>

	<InstallExecuteSequence>
		<Custom
			Action="SleepAfter$(var.OldPackageUninstallAction)"
			After="$(var.OldPackageUninstallAction)"
		><![CDATA[$(var.OldPackageUninstallActionCondition)]]></Custom>
	</InstallExecuteSequence>

	<?endif?>

</Include>