signals.js: add signalHandlerIsConnected method

linuxmint · Apr 23, 2017 · a029c27 · a029c27
1 parent 5dcc3c8
commit a029c27
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/modules/signals.js b/modules/signals.js
@@ -76,6 +76,22 @@ function _disconnect(id) {
     throw new Error("No signal connection " + id + " found");
 }
 
+function _signalHandlerIsConnected(id) {
+    if (! '_signalConnections' in this)
+        return false;
+
+    for (let connection of this._signalConnections) {
+        if (connection.id == id) {
+            if (connection.disconnected)
+                return false;
+            else
+                return true;
+        }
+    }
+
+    return false;
+}
+
 function _disconnectAll() {
     if ('_signalConnections' in this) {
         while (this._signalConnections.length > 0) {
@@ -152,6 +168,7 @@ function addSignalMethods(proto) {
     _addSignalMethod(proto, "connect", _connect);
     _addSignalMethod(proto, "disconnect", _disconnect);
     _addSignalMethod(proto, "emit", _emit);
+    _addSignalMethod(proto, "signalHandlerIsConnected", _signalHandlerIsConnected)
     // this one is not in GObject, but useful
     _addSignalMethod(proto, "disconnectAll", _disconnectAll);
 }