fix for #12

miho · Mar 5, 2021 · 78a73cf · 78a73cf
1 parent 577eeb3
commit 78a73cf
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Showing 2 changed files with 9 additions and 5 deletions.
diff --git a/gradle/project-info.gradle b/gradle/project-info.gradle
@@ -3,7 +3,7 @@
 // -----------------------------------------------------------------------------
 ext.publishing.artifactId =  project.name.toLowerCase()
 ext.publishing.groupId    =  'eu.mihosoft.monacofx'
-ext.publishing.versionId  =  '0.0.4'
+ext.publishing.versionId  =  '0.0.5'
 
 ext.publishing.developerName         = 'Michael Hoffer'
 ext.publishing.developerAlias        = 'miho'

diff --git a/src/main/java/eu/mihosoft/monacofx/Document.java b/src/main/java/eu/mihosoft/monacofx/Document.java
@@ -38,6 +38,8 @@ public class Document {
     private final StringProperty languageProperty = new SimpleStringProperty();
     private final IntegerProperty numberOfLinesProperty = new SimpleIntegerProperty();
 
+    private JFunction jsfListener;
+
     void setEditor(WebEngine engine, JSObject window, JSObject editor) {
         this.engine = engine;
         this.editor = editor;
@@ -51,16 +53,18 @@ void setEditor(WebEngine engine, JSObject window, JSObject editor) {
             editor.call("setValue", getText());
         });
 
-        // text changes <- js
-        window.setMember("contentChangeListener", new JFunction( args -> {
-
+        // keep a global reference because it's garbage collected otherwise
+        jsfListener = new JFunction( args -> {
             String text = (String) editor.call("getValue");
             if(text!=null) {
                 setText(text);
                 numberOfLinesProperty.setValue(text.split("\\R").length);
             }
             return null;
-        }));
+        });
+
+        // text changes <- js
+        window.setMember("contentChangeListener", jsfListener);
 
     }