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Let's use presents.dobj.EventListener (and expose a public function- oh well)

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and just handle all events in one place, greatly reducing line count
and at the same time handling changes other than AttributeChangedEvents
to the "refreshFields".


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@792 ed5b42cb-e716-0410-a449-f6a68f950b19
This commit is contained in:
Ray Greenwell
2009-03-24 21:39:41 +00:00
parent daa4dab352
commit 0a4a690728
1 changed files with 34 additions and 58 deletions
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src/as/com/threerings/flex/DSetList.as
+34 -58
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@@ -14,19 +14,21 @@ import mx.controls.List;
import com.threerings.util.Util;
import com.threerings.presents.dobj.AttributeChangedEvent;
import com.threerings.presents.dobj.AttributeChangeAdapter;
import com.threerings.presents.dobj.DEvent;
import com.threerings.presents.dobj.DObject;
import com.threerings.presents.dobj.DSet;
import com.threerings.presents.dobj.DSet_Entry;
import com.threerings.presents.dobj.EntryAddedEvent;
import com.threerings.presents.dobj.EntryUpdatedEvent;
import com.threerings.presents.dobj.EntryRemovedEvent;
import com.threerings.presents.dobj.SetAdapter;
import com.threerings.presents.dobj.EventListener;
import com.threerings.presents.dobj.NamedEvent;
/**
* A list that renders the contents of a DSet.
*/
public class DSetList extends List
implements EventListener
{
public function DSetList (
renderer :IFactory, sortFn :Function = null, filterFn :Function = null)
@@ -79,10 +81,7 @@ public class DSetList extends List
_object = object;
_field = field;
_refreshFields = refreshFields;
_attrListener = new AttributeChangeAdapter(attrChanged);
_setListener = new SetAdapter(entryAdded, entryUpdated, entryRemoved);
_object.addListener(_attrListener);
_object.addListener(_setListener);
_object.addListener(this);
setEntries(_object[_field] as DSet);
}
@@ -92,11 +91,8 @@ public class DSetList extends List
*/
public function shutdown () :void
{
if (_attrListener != null) {
_object.removeListener(_attrListener);
_object.removeListener(_setListener);
_attrListener = null;
_setListener = null;
if (_object != null) {
_object.removeListener(this);
_object = null;
_field = null;
_refreshFields = null;
@@ -113,58 +109,42 @@ public class DSetList extends List
}
/**
* Handle a change to the entire set.
* From com.threerings.presents.dobj.EventListener. Not actually part of the public API.
*/
protected function attrChanged (event :AttributeChangedEvent) :void
public function eventReceived (event :DEvent) :void
{
var name :String = event.getName();
if (!(event is NamedEvent)) {
return;
}
var name :String = NamedEvent(event).getName();
if (name == _field) {
setEntries(event.getValue() as DSet);
if (event is EntryAddedEvent) {
_data.list.addItem(EntryAddedEvent(event).getEntry());
} else if (_refreshFields.indexOf(name) != -1) {
refresh();
}
}
} else if (event is EntryUpdatedEvent) {
var entry :DSet_Entry = EntryUpdatedEvent(event).getEntry();
var upIdx :int = findKeyIndex(entry.getKey());
if (upIdx != -1) {
_data.list.setItemAt(entry, upIdx);
}
/**
* Handle an addition to the set.
*/
protected function entryAdded (event :EntryAddedEvent) :void
{
if (event.getName() == _field) {
_data.list.addItem(event.getEntry());
refresh();
}
}
} else if (event is EntryRemovedEvent) {
var remIdx :int = findKeyIndex(EntryRemovedEvent(event).getKey());
if (remIdx != -1) {
_data.list.removeItemAt(remIdx);
}
/**
* Handle an update to the set.
*/
protected function entryUpdated (event :EntryUpdatedEvent) :void
{
if (event.getName() == _field) {
var entry :DSet_Entry = event.getEntry();
var idx :int = findKeyIndex(entry.getKey());
if (idx == -1) {
throw new Error();
} else if (event is AttributeChangedEvent) {
setEntries(AttributeChangedEvent(event).getValue() as DSet);
return; // skip the full refresh
}
_data.list.setItemAt(entry, idx);
refresh();
}
}
/**
* Handle a removal from the set.
*/
protected function entryRemoved (event :EntryRemovedEvent) :void
{
if (event.getName() == _field) {
var idx :int = findKeyIndex(event.getKey());
if (idx != -1) {
_data.list.removeItemAt(idx);
refresh();
}
} else if (-1 == _refreshFields.indexOf(name)) {
return; // this name is not our concern: do nothing
}
// we reach this line if the event was for a _refreshField, or a Set event on _field
refresh();
}
/**
@@ -192,9 +172,5 @@ public class DSetList extends List
/** Fields on which to watch for updates and call refresh(). */
protected var _refreshFields :Array;
/** Our listeners, so that we don't junk-up our public interface. */
protected var _attrListener :AttributeChangeAdapter;
protected var _setListener :SetAdapter;
}
}