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javaswingjeditorpane

Synchronize contents of JEditorPane between two JFrames

I am working on a Java Swing application (JDK 7). I have two JEditorPane instances on two different JFrames, that I need to synchronize. I know the hard way of force copying contents on a modified event is one way to do it. But, I was wondering if there is a smarter/easier way to do this. I tried to use the same JEditorPane instances on both the frames, but that did not work.

I believe a reference to the container panel is included in the JEditorPane instance, so the old container is erased when it is added to a new container. Can we create a new subclass of JEditorPane, that can accommodate two containers?

Have you tried something like this before?

Solution

  • Use 2 instances of JEditorPane. Set them the same EditorKit and then use Document from the first one in the second.

    editorPane2.setDocument(editorPane1.getDocument());

    Document is a model in fact and you can share the same model between 2 components.