Question

I was wondering if there is a way or a method that allows me to get the current JEditorPane being displayed. For example I have a JFrame where I can create several tabs. Whenever a tab is created a new JEditorPane object is created and the content of that pane are displayed in the tab. I’ve implemented a ChangeListener that currently just gets me the index of the current tab whenever I open a new one, close one or navigate between tabs. What I want to do is whenever a new tab is opened or navigated to I want to get the current JEditorPane object that resides at this tab. Is there any way in which I can achieve that?

Sorry if the question is a bit vague.

Thanks in advance.

Answer 1

The best way to do this would be to subclass JPanel and add your custom JPanel to the tabbed pane instead:

public class EditorPanel extends JPanel {

    private JEditorPane editorPane;

    // ...

    public EditorPanel() {
        // ...
        editorPane = new JEditorPane( ... );
        super.add(editorPane);
        // ...
    }

    // ...

    public JEditorPane getEditorPane() {
        return editorPane;
    }
}

Adding a new tab:

JTabbedPane tabbedPane = ... ;
tabbedPane.addTab(name, icon, new EditorPanel());

And then when you need to access it using the tabbed pane:

Component comp = tabbedPane.getComponentAt(i);
if (comp instanceof EditorPanel) {
    JEditorPane editorPane = ((EditorPanel) comp).getEditorPane();
}

This is a better alternative to maintaining a separate list and trying to maintain it alongside the tabbed pane’s indices.