diff options
author | James Willcox <snopr@snorp.net> | 2005-09-09 17:12:57 +0000 |
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committer | James Willcox <snopr@snorp.net> | 2005-09-09 17:12:57 +0000 |
commit | ba12decc4413dedf22c06545d1ec5938efa8954a (patch) | |
tree | 6bd8edc20ffabbbd9300264677a983695787dd7f /avahi-sharp/ServiceTypeBrowser.cs | |
parent | e1d06346134b3051878c8080694068517faf3f16 (diff) |
add initial mono bindings
git-svn-id: file:///home/lennart/svn/public/avahi/trunk@538 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe
Diffstat (limited to 'avahi-sharp/ServiceTypeBrowser.cs')
-rw-r--r-- | avahi-sharp/ServiceTypeBrowser.cs | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/avahi-sharp/ServiceTypeBrowser.cs b/avahi-sharp/ServiceTypeBrowser.cs new file mode 100644 index 0000000..0334b96 --- /dev/null +++ b/avahi-sharp/ServiceTypeBrowser.cs @@ -0,0 +1,139 @@ +using System; +using System.Collections; +using System.Runtime.InteropServices; + +namespace Avahi +{ + internal delegate void ServiceTypeBrowserCallback (IntPtr browser, int iface, Protocol proto, BrowserEvent bevent, + IntPtr type, IntPtr domain, IntPtr userdata); + + public struct ServiceTypeInfo + { + public int NetworkInterface; + public Protocol Protocol; + public string Domain; + public string ServiceType; + } + + public delegate void ServiceTypeInfoHandler (object o, ServiceTypeInfo info); + + public class ServiceTypeBrowser : IDisposable + { + private IntPtr handle; + private ArrayList infos = new ArrayList (); + private Client client; + private int iface; + private Protocol proto; + private string domain; + + private ArrayList addListeners = new ArrayList (); + private ArrayList removeListeners = new ArrayList (); + + [DllImport ("avahi-client")] + private static extern IntPtr avahi_service_type_browser_new (IntPtr client, int iface, int proto, + IntPtr domain, ServiceTypeBrowserCallback cb, + IntPtr userdata); + + [DllImport ("avahi-client")] + private static extern void avahi_service_type_browser_free (IntPtr handle); + + public event ServiceTypeInfoHandler ServiceTypeAdded + { + add { + addListeners.Add (value); + Start (); + } + remove { + addListeners.Remove (value); + Stop (false); + } + } + + public event ServiceTypeInfoHandler ServiceTypeRemoved + { + add { + removeListeners.Add (value); + Start (); + } + remove { + removeListeners.Remove (value); + Stop (false); + } + } + + public ServiceTypeInfo[] ServiceTypes + { + get { return (ServiceTypeInfo[]) infos.ToArray (typeof (ServiceTypeInfo)); } + } + + public ServiceTypeBrowser (Client client) : this (client, client.DomainName) + { + } + + public ServiceTypeBrowser (Client client, string domain) : this (client, -1, Protocol.Unspecified, domain) + { + } + + public ServiceTypeBrowser (Client client, int iface, Protocol proto, string domain) + { + this.client = client; + this.iface = iface; + this.proto = proto; + this.domain = domain; + } + + ~ServiceTypeBrowser () + { + Dispose (); + } + + public void Dispose () + { + Stop (true); + } + + private void Start () + { + if (handle != IntPtr.Zero || (addListeners.Count == 0 && removeListeners.Count == 0)) + return; + + IntPtr domainPtr = Utility.StringToPtr (domain); + handle = avahi_service_type_browser_new (client.Handle, iface, (int) proto, domainPtr, + OnServiceTypeBrowserCallback, IntPtr.Zero); + Utility.Free (domainPtr); + } + + private void Stop (bool force) + { + if (handle != IntPtr.Zero && (force || (addListeners.Count == 0 && removeListeners.Count == 0))) { + avahi_service_type_browser_free (handle); + handle = IntPtr.Zero; + } + } + + private void OnServiceTypeBrowserCallback (IntPtr browser, int iface, Protocol proto, BrowserEvent bevent, + IntPtr type, IntPtr domain, IntPtr userdata) + { + + ServiceTypeInfo info; + info.NetworkInterface = iface; + info.Protocol = proto; + info.Domain = Utility.PtrToString (domain); + info.ServiceType = Utility.PtrToString (type); + + infos.Add (info); + + if (bevent == BrowserEvent.Added) { + infos.Add (info); + + foreach (ServiceTypeInfoHandler handler in addListeners) + handler (this, info); + } else { + infos.Remove (info); + + foreach (ServiceTypeInfoHandler handler in removeListeners) + handler (this, info); + } + } + } +} |