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POSet the amount of rows JList show (Java)
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  1. POSet the amount of rows JList show (Java)
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    copied!<p>Problem: I have a method that creates a list from the parsed ArrayList. I manage to show the list in the GUI, without scrollbar. However, I am having problem setting it to show only the size of ArrayList. Meaning, say if the size is 6, there should only be 6 rows in the shown List. Below is the code that I am using. I tried setting the <code>visibleRowCount</code> as below but it does not work. I tried printing out the result and it shows that the change is made.</p> <pre><code>private void createSuggestionList(ArrayList&lt;String&gt; str) { int visibleRowCount = str.size(); System.out.println("visibleRowCount " + visibleRowCount); listForSuggestion = new JList(str.toArray()); listForSuggestion.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); listForSuggestion.setSelectedIndex(0); listForSuggestion.setVisibleRowCount(visibleRowCount); System.out.println(listForSuggestion.getVisibleRowCount()); listScrollPane = new JScrollPane(listForSuggestion); MouseListener mouseListener = new MouseAdapter() { @Override public void mouseClicked(MouseEvent mouseEvent) { JList theList = (JList) mouseEvent.getSource(); if (mouseEvent.getClickCount() == 2) { int index = theList.locationToIndex(mouseEvent.getPoint()); if (index &gt;= 0) { Object o = theList.getModel().getElementAt(index); System.out.println("Double-clicked on: " + o.toString()); } } } }; listForSuggestion.addMouseListener(mouseListener); textPane.add(listScrollPane); repaint(); } </code></pre> <p>To summarize: I want the JList to show <strong>as many rows as the size of the parsed ArrayList</strong>, <strong>without a scrollbar</strong>.</p> <p>Here is the picture of the problem:</p> <p><a href="https://i.stack.imgur.com/Rf04g.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Rf04g.png" alt="jlist 1"></a></p> <p>Here's the link to the other 2 as the picture resolution is quite big I'm scared it will distort the view:</p> <p><a href="https://i.stack.imgur.com/Rf04g.png" rel="nofollow noreferrer">JList 1</a> &amp; <a href="https://i.stack.imgur.com/C0I2o.png" rel="nofollow noreferrer">JList 2</a></p> <p>The JList 1 and 2 pictures shows it clearly. The JList displays empty rows, which I do not want it to happen.</p> <p>Any ideas? Please help. Thanks. Please let me know if a picture of the problem is needed in case I did not phrase my question correctly.</p> <p>--</p> <p>Edit: </p> <pre><code>JScrollPane scrollPane = new JScrollPane(textPane); scrollPane.setPreferredSize(new Dimension(200, 200)); //Create the text area for the status log and configure it. changeLog = new JTextArea(5, 30); changeLog.setEditable(false); JScrollPane scrollPaneForLog = new JScrollPane(changeLog); //Create a split pane for the change log and the text area. JSplitPane splitPane = new JSplitPane( JSplitPane.VERTICAL_SPLIT, scrollPane, scrollPaneForLog); splitPane.setOneTouchExpandable(true); //Create the status area. JPanel statusPane = new JPanel(new GridLayout(1, 1)); CaretListenerLabel caretListenerLabel = new CaretListenerLabel("Caret Status"); statusPane.add(caretListenerLabel); //Add the components. getContentPane().add(splitPane, BorderLayout.CENTER); getContentPane().add(statusPane, BorderLayout.PAGE_END); </code></pre> <p>How the textPane is included into the container, if that helps</p> <p>Another edit:</p> <pre><code>public void showSuggestionList(JScrollPane pane, Rectangle caretCoords) { pane.setVisible(false); pane.setBounds(caretCoords.x - 5, caretCoords.y + 25, 400, 250); pane.setVisible(true); repaint(); } </code></pre> <p>showSuggestionList() is being called my CaretListener, to show the JScrollPane when the caret moves.</p>
 

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