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We love to revamp! Created a set of listener interfaces which are used

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with distributed objects rather than having a single handleEvent() by
which all subscribers are forced to hear about all events. Now one
subscribes separately and then adds onesself as any of a few types of
listener once they have access to the subscribed object reference.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@439 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
2001-10-12 00:03:03 +00:00
parent de8d9dabd1
commit 804505890f
34 changed files with 534 additions and 323 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/java/com/threerings/crowd/chat/client/ChatDirector.java
+14 -29
View File
@@ -1,5 +1,5 @@
//
// $Id: ChatDirector.java,v 1.10 2001/10/11 04:07:51 mdb Exp $
// $Id: ChatDirector.java,v 1.11 2001/10/12 00:03:02 mdb Exp $
package com.threerings.crowd.chat;
@@ -19,7 +19,8 @@ import com.threerings.crowd.util.CrowdContext;
* messaging.
*/
public class ChatDirector
implements LocationObserver, Subscriber, InvocationReceiver, ChatCodes
implements LocationObserver, MessageListener, InvocationReceiver,
ChatCodes
{
/**
* Creates a chat director and initializes it with the supplied
@@ -110,54 +111,39 @@ public class ChatDirector
return ChatService.tell(_ctx.getClient(), target, message, this);
}
// documentation inherited
public boolean locationMayChange (int placeId)
{
// we accept all location change requests
return true;
}
// documentation inherited
public void locationDidChange (PlaceObject place)
{
if (_place != null) {
// unsubscribe from our old object
_place.removeSubscriber(this);
// unlisten to our old object
_place.removeListener(this);
}
// subscribe to the new object
// listen to the new object
_place = place;
_place.addSubscriber(this);
_place.addListener(this);
}
// documentation inherited
public void locationChangeFailed (int placeId, String reason)
{
// nothing we care about
}
public void objectAvailable (DObject object)
// documentation inherited
public void messageReceived (MessageEvent event)
{
// nothing to do here
}
public void requestFailed (int oid, ObjectAccessException cause)
{
// nothing to do here
}
public boolean handleEvent (DEvent event, DObject target)
{
// we only care about message events
if (!(event instanceof MessageEvent)) {
return true;
}
// and only those of proper name
MessageEvent mevt = (MessageEvent)event;
String name = mevt.getName();
String name = event.getName();
if (name.equals(ChatService.SPEAK_NOTIFICATION)) {
handleSpeakMessage(mevt.getArgs());
handleSpeakMessage(event.getArgs());
}
return true;
}
/**
@@ -216,6 +202,5 @@ public class ChatDirector
protected CrowdContext _ctx;
protected PlaceObject _place;
protected ArrayList _displays = new ArrayList();
}
src/java/com/threerings/crowd/client/LocationDirector.java
+1 -12
View File
@@ -1,5 +1,5 @@
//
// $Id: LocationDirector.java,v 1.11 2001/10/11 04:07:51 mdb Exp $
// $Id: LocationDirector.java,v 1.12 2001/10/12 00:03:02 mdb Exp $
package com.threerings.crowd.client;
@@ -201,11 +201,6 @@ public class LocationDirector
"object; all has gone horribly wrong" +
"[cause=" + cause + "].");
}
public boolean handleEvent (DEvent event, DObject target)
{
return false;
}
};
int cloid = client.getClientOid();
client.getDObjectManager().subscribeToObject(cloid, sub);
@@ -326,12 +321,6 @@ public class LocationDirector
}
}
public boolean handleEvent (DEvent event, DObject target)
{
// nothing to do here, but remain subscribed
return true;
}
protected void notifyFailure (int placeId, String reason)
{
for (int i = 0; i < _observers.size(); i++) {
src/java/com/threerings/crowd/client/OccupantManager.java
+20 -40
View File
@@ -1,5 +1,5 @@
//
// $Id: OccupantManager.java,v 1.6 2001/10/11 04:07:51 mdb Exp $
// $Id: OccupantManager.java,v 1.7 2001/10/12 00:03:02 mdb Exp $
package com.threerings.crowd.client;
@@ -36,7 +36,7 @@ import com.threerings.crowd.util.CrowdContext;
* what's in the cache.
*/
public class OccupantManager
implements LocationObserver, Subscriber
implements LocationObserver, OidListListener
{
/**
* Constructs a new occupant manager with the supplied context.
@@ -73,16 +73,16 @@ public class OccupantManager
// inherit documentation
public void locationDidChange (PlaceObject place)
{
// unsubscribe from the old place object if there was one
// unlisten to the old place object if there was one
if (_place != null) {
_place.removeSubscriber(this);
_place.removeListener(this);
// clear out the occupant cache for the previous location
_ocache.clear();
}
// subscribe to the new one
// listen to the new one
_place = place;
_place.addSubscriber(this);
_place.addListener(this);
// cache the occupant info for the occupants in this room
Iterator iter = _place.occupantInfo.elements();
@@ -98,43 +98,17 @@ public class OccupantManager
// nothing to do here either
}
// inherit documentation
public void objectAvailable (DObject object)
{
// nothing doing
}
// inherit documentation
public void requestFailed (int oid, ObjectAccessException cause)
{
// nothing doing
}
// inherit documentation
public boolean handleEvent (DEvent event, DObject target)
{
// we care about occupant added and removed events only
if (event instanceof ObjectAddedEvent) {
ObjectAddedEvent oe = (ObjectAddedEvent)event;
if (oe.getName().equals(PlaceObject.OCCUPANTS)) {
handleOccupantAdded(oe.getOid());
}
} else if (event instanceof ObjectRemovedEvent) {
ObjectRemovedEvent oe = (ObjectRemovedEvent)event;
if (oe.getName().equals(PlaceObject.OCCUPANTS)) {
handleOccupantRemoved(oe.getOid());
}
}
return true;
}
/**
* Deals with all of the processing when an occupant shows up.
*/
protected void handleOccupantAdded (int bodyOid)
public void objectAdded (ObjectAddedEvent event)
{
// bail if this isn't for the OCCUPANTS field
if (!event.getName().equals(PlaceObject.OCCUPANTS)) {
return;
}
int bodyOid = event.getOid();
Object key = new Integer(bodyOid);
// get the occupant info from the place object
@@ -158,8 +132,14 @@ public class OccupantManager
/**
* Deals with all of the processing when an occupant leaves.
*/
protected void handleOccupantRemoved (int bodyOid)
public void objectRemoved (ObjectRemovedEvent event)
{
// bail if this isn't for the OCCUPANTS field
if (!event.getName().equals(PlaceObject.OCCUPANTS)) {
return;
}
int bodyOid = event.getOid();
// see if we have an occupant object for this body
OccupantInfo info = (OccupantInfo)_ocache.get(bodyOid);
if (info == null) {
src/java/com/threerings/crowd/server/PlaceManager.java
+40 -41
View File
@@ -1,5 +1,5 @@
//
// $Id: PlaceManager.java,v 1.17 2001/10/11 04:07:51 mdb Exp $
// $Id: PlaceManager.java,v 1.18 2001/10/12 00:03:02 mdb Exp $
package com.threerings.crowd.server;
@@ -28,9 +28,10 @@ import com.threerings.crowd.data.*;
* <p> A derived class is expected to handle initialization, cleanup and
* operational functionality via the calldown functions {@link
* #didStartup}, {@link #willShutdown}, and {@link #didShutdown} as well
* as through additions to {@link #handleEvent}.
* as through event listeners.
*/
public class PlaceManager implements Subscriber
public class PlaceManager
implements MessageListener, OidListListener
{
/**
* Returns a reference to our place configuration object.
@@ -101,11 +102,8 @@ public class PlaceManager implements Subscriber
// configure the occupant info set
plobj.occupantInfo.setElementType(getOccupantInfoClass());
// we'll want to be included among the place object's subscribers;
// we know that we can call addSubscriber() directly because the
// place manager is doing all of our initialization on the dobjmgr
// thread
plobj.addSubscriber(this);
// we'll need to hear about place object events
plobj.addListener(this);
// let our derived classes do their thang
didStartup();
@@ -225,47 +223,48 @@ public class PlaceManager implements Subscriber
_msghandlers.put(name, handler);
}
// nothing doing
public void objectAvailable (DObject object)
{
}
// nothing doing
public void requestFailed (int oid, ObjectAccessException cause)
/**
* Dispatches message events to registered message handlers. Derived
* classes should probably register message handlers rather than
* override this method directly.
*/
public void messageReceived (MessageEvent event)
{
MessageHandler handler = null;
if (_msghandlers != null) {
handler = (MessageHandler)_msghandlers.get(event.getName());
}
if (handler != null) {
handler.handleEvent(event, _plobj);
}
}
/**
* Derived classes can override this to handle events, but they must
* be sure to pass unknown events up to their super class.
* Handles occupant arrival into the place. Derived classes may need
* to override this method to handle other oid lists in their derived
* place objects. They should be sure to call
* <code>super.objectAdded</code> if the event is one they don't
* explicitly handle.
*/
public boolean handleEvent (DEvent event, DObject target)
public void objectAdded (ObjectAddedEvent event)
{
// if this is a message event, see if we have a handler for it
if (event instanceof MessageEvent) {
MessageEvent mevt = (MessageEvent)event;
MessageHandler handler = null;
if (_msghandlers != null) {
handler = (MessageHandler)_msghandlers.get(mevt.getName());
}
if (handler != null) {
handler.handleEvent(mevt, (PlaceObject)target);
}
} else if (event instanceof ObjectAddedEvent) {
ObjectAddedEvent oae = (ObjectAddedEvent)event;
if (oae.getName().equals(PlaceObject.OCCUPANTS)) {
bodyEntered(oae.getOid());
}
} else if (event instanceof ObjectRemovedEvent) {
ObjectRemovedEvent ore = (ObjectRemovedEvent)event;
if (ore.getName().equals(PlaceObject.OCCUPANTS)) {
bodyLeft(ore.getOid());
}
if (event.getName().equals(PlaceObject.OCCUPANTS)) {
bodyEntered(event.getOid());
}
}
return true;
/**
* Handles occupant departure from the place. Derived classes may need
* to override this method to handle other oid lists in their derived
* place objects. They should be sure to call
* <code>super.objectRemoved</code> if the event is one they don't
* explicitly handle.
*/
public void objectRemoved (ObjectRemovedEvent event)
{
if (event.getName().equals(PlaceObject.OCCUPANTS)) {
bodyLeft(event.getOid());
}
}
/**
src/java/com/threerings/crowd/server/PlaceRegistry.java
+1 -8
View File
@@ -1,5 +1,5 @@
//
// $Id: PlaceRegistry.java,v 1.11 2001/10/11 04:07:51 mdb Exp $
// $Id: PlaceRegistry.java,v 1.12 2001/10/12 00:03:02 mdb Exp $
package com.threerings.crowd.server;
@@ -173,13 +173,6 @@ public class PlaceRegistry implements Subscriber
", cause=" + cause + "].");
}
public boolean handleEvent (DEvent event, DObject target)
{
// this shouldn't be called because we don't subscribe to
// anything, we just want to hear about object creation
return false;
}
protected Queue _createq = new Queue();
protected HashIntMap _pmgrs = new HashIntMap();
}