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| author | Kevin Smith <git@kismith.co.uk> | 2011-07-01 09:19:49 (GMT) |
|---|---|---|
| committer | Kevin Smith <git@kismith.co.uk> | 2011-07-01 09:19:49 (GMT) |
| commit | 2da71a8a85486a494343f1662d64fb5ae5a2a44e (patch) | |
| tree | 23992f9f2a00bac23b345e5c2cc9c1194efc25be /src/com/isode/stroke/signals/Signal.java | |
| download | stroke-2da71a8a85486a494343f1662d64fb5ae5a2a44e.zip stroke-2da71a8a85486a494343f1662d64fb5ae5a2a44e.tar.bz2 | |
Initial import
Diffstat (limited to 'src/com/isode/stroke/signals/Signal.java')
| -rw-r--r-- | src/com/isode/stroke/signals/Signal.java | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/com/isode/stroke/signals/Signal.java b/src/com/isode/stroke/signals/Signal.java new file mode 100644 index 0000000..cfa8665 --- /dev/null +++ b/src/com/isode/stroke/signals/Signal.java @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2010, Isode Limited, London, England. + * All rights reserved. + */ +package com.isode.stroke.signals; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; + +/** + * An approximation of the boost::signals system, although a little more warty. + */ +public class Signal { + + private final Map<SignalConnection, Slot> binds_ = Collections.synchronizedMap(new HashMap<SignalConnection, Slot>()); + + public SignalConnection connect(Slot bind) { + final SignalConnection connection = new SignalConnection(); + binds_.put(connection, bind); + connection.onDestroyed.connectWithoutReturn(new Slot() { + + public void call() { + binds_.remove(connection); + } + }); + return connection; + } + + public SignalConnection connect(final Signal target) { + return connect(new Slot() { + public void call() { + target.emit(); + } + }); + } + + void connectWithoutReturn(Slot bind) { + binds_.put(null, bind); + } + + public void emit() { + ArrayList<Slot> binds = new ArrayList<Slot>(); + binds.addAll(binds_.values()); + for (Slot bind : binds) { + bind.call(); + } + } + + public void disconnectAll() { + binds_.clear(); + } +} |