/// <summary>Creates and returns a permission that is the intersection of the current permission and the specified permission.</summary>
/// <returns>A new permission that represents the intersection of the current permission and the specified permission. This new permission is null if the intersection is empty.</returns>
/// <param name="target">A permission to intersect with the current permission object. It must be of the same type as the current permission. </param>
/// <exception cref="T:System.ArgumentException">The <paramref name="target" /> parameter is not null and is not of the same type as the current permission. </exception>
public override IPermission Intersect(IPermission target)
{
IsolatedStorageFilePermission isolatedStorageFilePermission = this.Cast(target);
if (isolatedStorageFilePermission == null)
{
return(null);
}
if (base.IsEmpty() && isolatedStorageFilePermission.IsEmpty())
{
return(null);
}
return(new IsolatedStorageFilePermission(PermissionState.None)
{
m_userQuota = ((this.m_userQuota >= isolatedStorageFilePermission.m_userQuota) ? isolatedStorageFilePermission.m_userQuota : this.m_userQuota),
m_machineQuota = ((this.m_machineQuota >= isolatedStorageFilePermission.m_machineQuota) ? isolatedStorageFilePermission.m_machineQuota : this.m_machineQuota),
m_expirationDays = ((this.m_expirationDays >= isolatedStorageFilePermission.m_expirationDays) ? isolatedStorageFilePermission.m_expirationDays : this.m_expirationDays),
m_permanentData = (this.m_permanentData && isolatedStorageFilePermission.m_permanentData),
UsageAllowed = ((this.m_allowed >= isolatedStorageFilePermission.m_allowed) ? isolatedStorageFilePermission.m_allowed : this.m_allowed)
});
}
public override IPermission Intersect(IPermission target)
{
IsolatedStorageFilePermission isfp = Cast(target);
if (isfp == null)
{
return(null);
}
if (IsEmpty() && isfp.IsEmpty())
{
return(null);
}
IsolatedStorageFilePermission p = new IsolatedStorageFilePermission(PermissionState.None);
p.m_userQuota = (m_userQuota < isfp.m_userQuota) ? m_userQuota : isfp.m_userQuota;
p.m_machineQuota = (m_machineQuota < isfp.m_machineQuota) ? m_machineQuota : isfp.m_machineQuota;
p.m_expirationDays = (m_expirationDays < isfp.m_expirationDays) ? m_expirationDays : isfp.m_expirationDays;
p.m_permanentData = (m_permanentData && isfp.m_permanentData);
// UsageAllowed == Unrestricted is a special case handled by the property
p.UsageAllowed = (m_allowed < isfp.m_allowed) ? m_allowed : isfp.m_allowed;
return(p);
}
