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Clear out our location and inform observers that Elvis has left the

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building when the client logs off.  Use an ObserverList.  Expanded
imports.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1384 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Walter Korman
2002-05-22 21:46:53 +00:00
parent 3bc46992bf
commit b4982af8bc
1 changed files with 79 additions and 48 deletions
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src/java/com/threerings/crowd/client/LocationDirector.java
+79 -48
View File
@@ -1,16 +1,25 @@
//
// $Id: LocationDirector.java,v 1.18 2002/03/11 19:51:24 mdb Exp $
// $Id: LocationDirector.java,v 1.19 2002/05/22 21:46:53 shaper Exp $
package com.threerings.crowd.client;
import java.util.ArrayList;
import java.util.List;
import com.threerings.presents.client.*;
import com.threerings.presents.dobj.*;
import com.samskivert.util.ObserverList;
import com.samskivert.util.ObserverList.ObserverOp;
import com.threerings.presents.client.Client;
import com.threerings.presents.client.SessionObserver;
import com.threerings.presents.dobj.DObject;
import com.threerings.presents.dobj.DObjectManager;
import com.threerings.presents.dobj.ObjectAccessException;
import com.threerings.presents.dobj.Subscriber;
import com.threerings.crowd.Log;
import com.threerings.crowd.data.*;
import com.threerings.crowd.data.BodyObject;
import com.threerings.crowd.data.PlaceConfig;
import com.threerings.crowd.data.PlaceObject;
import com.threerings.crowd.util.CrowdContext;
/**
@@ -140,18 +149,17 @@ public class LocationDirector
* @return true if everyone is happy with the move, false if it was
* vetoed by one of the location observers.
*/
public boolean mayMoveTo (int placeId)
public boolean mayMoveTo (final int placeId)
{
for (int i = 0; i < _observers.size(); i++) {
LocationObserver obs = (LocationObserver)_observers.get(i);
if (!obs.locationMayChange(placeId)) {
Log.info("Location change vetoed by observer " +
"[pid=" + placeId + ", obs=" + obs + "].");
return false;
final boolean[] vetoed = new boolean[1];
_observers.apply(new ObserverOp() {
public boolean apply (Object obs) {
LocationObserver lobs = (LocationObserver)obs;
vetoed[0] = (vetoed[0] || !lobs.locationMayChange(placeId));
return true;
}
}
return true;
});
return !vetoed[0];
}
/**
@@ -166,26 +174,8 @@ public class LocationDirector
*/
public void didMoveTo (int placeId, PlaceConfig config)
{
DObjectManager omgr = _ctx.getDObjectManager();
// do some cleaning up if we were previously in a place
if (_plobj != null) {
// let the old controller know that things are going away
if (_controller != null) {
try {
_controller.didLeavePlace(_plobj);
} catch (Exception e) {
Log.warning("Place controller choked in " +
"didLeavePlace [plobj=" + _plobj + "].");
Log.logStackTrace(e);
}
_controller = null;
}
// unsubscribe from our old place object
omgr.unsubscribeFromObject(_plobj.getOid(), this);
_plobj = null;
}
// do some cleaning up in case we were previously in a place
didLeavePlace();
// make a note that we're now mostly in the new location
_previousPlaceId = _placeId;
@@ -205,7 +195,38 @@ public class LocationDirector
}
// subscribe to our new place object to complete the move
omgr.subscribeToObject(_placeId, this);
_ctx.getDObjectManager().subscribeToObject(_placeId, this);
}
/**
* Called when we're leaving our current location. Informs the
* location's controller that we're departing, unsubscribes from the
* location's place object, and clears out our internal place
* information.
*/
protected void didLeavePlace ()
{
if (_plobj != null) {
// let the old controller know that things are going away
if (_controller != null) {
try {
_controller.didLeavePlace(_plobj);
} catch (Exception e) {
Log.warning("Place controller choked in " +
"didLeavePlace [plobj=" + _plobj + "].");
Log.logStackTrace(e);
}
_controller = null;
}
// unsubscribe from our old place object
_ctx.getDObjectManager().unsubscribeFromObject(
_plobj.getOid(), this);
_plobj = null;
// and clear out the associated place id
_placeId = -1;
}
}
/**
@@ -251,9 +272,11 @@ public class LocationDirector
public void clientDidLogoff (Client client)
{
// clear our our references
_plobj = null;
_placeId = -1;
// clear ourselves out and inform observers of our departure
didLeavePlace();
// let our observers know that we're no longer in a location
_observers.apply(_didChangeOp);
}
/**
@@ -305,10 +328,7 @@ public class LocationDirector
}
// let our observers know that all is well on the western front
for (int i = 0; i < _observers.size(); i++) {
LocationObserver obs = (LocationObserver)_observers.get(i);
obs.locationDidChange(_plobj);
}
_observers.apply(_didChangeOp);
}
/**
@@ -374,19 +394,22 @@ public class LocationDirector
}
}
protected void notifyFailure (int placeId, String reason)
protected void notifyFailure (final int placeId, final String reason)
{
for (int i = 0; i < _observers.size(); i++) {
LocationObserver obs = (LocationObserver)_observers.get(i);
obs.locationChangeFailed(placeId, reason);
}
_observers.apply(new ObserverOp() {
public boolean apply (Object obs) {
((LocationObserver)obs).locationChangeFailed(placeId, reason);
return true;
}
});
}
/** The context through which we access needed services. */
protected CrowdContext _ctx;
/** Our location observer list. */
protected List _observers = new ArrayList();
protected ObserverList _observers =
new ObserverList(ObserverList.SAFE_IN_ORDER_NOTIFY);
/** The oid of the place we currently occupy. */
protected int _placeId = -1;
@@ -409,4 +432,12 @@ public class LocationDirector
/** The entity that deals when we fail to subscribe to a place
* object. */
protected FailureHandler _failureHandler;
/** The operation used to inform observers that the location changed. */
protected ObserverOp _didChangeOp = new ObserverOp() {
public boolean apply (Object obs) {
((LocationObserver)obs).locationDidChange(_plobj);
return true;
}
};
}