I am trying to do something in Java which requires me to have a JTextArea in a ScrollPane.
Here is how I have defined them:
private JTextArea longestparagraph = new JTextArea();
....
JScrollPane scrollpanedreapta = new JScrollPane(longestparagraph,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollpanedreapta.setBorder(BorderFactory.createTitledBorder("Cel mai lung paragraf:"));
The problem I'm encountering is that the text doesn't start on a new line when it reaches the right border of the TextArea but it continues. Got any ideas how to solve that? Here's a picture to make my statement a little bit clearer.
Found the answer. Just had to this:
longestparagraph.setLineWrap(true);
longestparagraph.setWrapStyleWord(true);
Related
I have a JTextField that I'm trying to get to automatically view from the Right (Not align to the right), so if the text is to long for the JTextField it will display the last characters in the String instead of the beginning.
Ive been searching for ages trying to locate an answer but keep coming up with aligning.
The 2 images below show what i get and what I'm after, the text is "123456789_123", the JTextField is only big enough to contain the "123456789" but i want to see the "56789_123" instead without having to focus on the field. (i can use something other than a JTextField if needed, tried a JTextArea but had the same issue).
What i Get
What I'm after
I can not just make the Field bigger as I'm restricted by other Objects in my program. Usually the text fits fine but every now and then its too big.
Found a work around.
you create a JScrollPane, make its vertical and horizontal bars invisible by setting there dimensions to 0,0. then scroll to end using 'setValue' to max.
hope this helps anyone trying to do something similar.
JTextArea editArea2 = new JTextArea(5,5);
editArea2.setText("123456789_12345");
editArea2.setAlignmentX(CENTER_ALIGNMENT);
asd = new Dimension();
asd.height = 20;
asd.width = 70;
JScrollPane scrollPane = new JScrollPane();
scrollPane.setViewportView(editArea2);
scrollPane.setMinimumSize(asd);
scrollPane.setMaximumSize(asd);
scrollPane.getVerticalScrollBar().setPreferredSize (new Dimension(0,0));
scrollPane.getHorizontalScrollBar().setPreferredSize (new Dimension(0,0));
scrollPane.getVerticalScrollBar().setMinimumSize(new Dimension(0, 0));
scrollPane.getVerticalScrollBar().setMinimumSize(new Dimension(0, 0));
scrollPane.getVerticalScrollBar().setMaximumSize(new Dimension(0, 0));
scrollPane.getVerticalScrollBar().setMaximumSize(new Dimension(0, 0));
scrollPane.getHorizontalScrollBar().setValue( scrollPane.getHorizontalScrollBar().getMaximum() );
I am new to GWT and have made 3 textarea objects and have added them to a vertical panel, which is also added to my rootpanel. However, I cannot seem to input any text in these textareas. Any suggestions?
VerticalPanel panel = new VerticalPanel();
TextArea tb = new TextArea();
TextArea tb1 = new TextArea();
TextArea tb2 = new TextArea();
panel.add(tb);
panel.add(tb1);
panel.add(tb2);
RootPanel.get().add(panel);
I would try enabling them:
tb.setEnabled(true)
tb1.setEnabled(true)
tb2.setEnabled(true)
But I don't think that should be necessary.
There might be something small you are missing, I would compare all of your code to this. It seems to be a good working example that you could compare your code to and see if you missed a small step.
It seems you may need to add the TextArea objects to horizontal panels and then add those horizontal panels to the vertical panel.
The problem you describe maybe caused by adding another widget on top of your TextArea widgets. In this case TextArea widget may remain visible, but it will be unusable.
I don't see it in the code snippet that you provided, but maybe it's not all of your code.
Try this. It is the example straight from the GWT Javadoc.
Maybe you need to use setCharacterWidth(int size) and setVisibleLines(int size) before adding it.
public class TextBoxExample implements EntryPoint {
public void onModuleLoad() {
//Make an 80 x 50 TextArea
TextArea ta = new TextArea();
ta.setCharacterWidth(80);
ta.setVisibleLines(50);
// Add them to the root panel.
VerticalPanel panel = new VerticalPanel();
panel.add(ta);
RootPanel.get().add(panel);
}
}
I have private JTextArea opisDiagnoza; I insert it into JScrollPane jsp, like this:
opisDiagnoza = new JTextArea("Opis diagnozy:\n");
JScrollPane jsp = new JScrollPane(opisDiagnoza, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
Later on, when I do:
opisDiagnoza.setText(REALLY_LONG_TEXT);
the JScrollPane autorscrolls to right, so to read the content I need to manually(by clicking horizontal scrollbar) scroll it to the left.
How to autoscroll JScrollPane to the left after inserting a text into JTextArea inside of it?
Example:
http://i.stack.imgur.com/fxc4x.png
I can't add image explicitly because of low reputation.
Try this
DefaultCaret caret = (DefaultCaret)textArea.getCaret();
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
I am looking for a way to do the following:
Have a JDialog with a fixed width.
In it is a JTextArea (or whatever you suggest is a better component...) which receives a text of varying length (somewhere between 0 and 30 line)
Below that text is a button.
The dialog is automatically sized in height to make sure all the Text AND the button is being displayed.
The closest I have come to a solution is this, but the JTextArea does not seem to know how large it is after it did the automatic line breaks!
public PleaseResize(){
super();
Container cp = this.getContentPane();
cp.setLayout(new BoxLayout(cp, BoxLayout.Y_AXIS));
JTextArea area = new JTextArea();
area.setColumns(20);
area.setLineWrap(true);
area.setEditable(false);
area.setWrapStyleWord(true);
area.setText("Once upon a midnight dreary, while I pondered, weak and weary, over many a quaint an curious volume of forgotten lore.");
cp.add(area);
cp.add(new JButton("Hallo"));
this.pack();
}
Scrolling the Text is unfortunately not an option.
I have asked this is a slightly different way before here: Resize Dialog properly after automatic LineWrap, but perhaps the JTextArea is the wrong component after all? Am I using the wrong LayoutManager? All of them seem unable to determine how large the dialog should be, though. Why does the JTextArea fail to communicate it's height after adding line-breaks to the text to the outside?
Here is the working code:
public PleaseResize() throws BadLocationException {
super();
Container cp = this.getContentPane();
cp.setLayout(new BorderLayout());
JTextArea area = new JTextArea();
area.setColumns(20);
area.setLineWrap(true);
area.setEditable(false);
area.setWrapStyleWord(true);
area.setText("Once upon a midnight dreary, while I pondered, weak and weary, over many a quaint an curious volume of forgotten lore.");
System.out.println(area.getLineCount());
JScrollPane pane = new JScrollPane(area);
cp.add(pane, BorderLayout.CENTER);
cp.add(new JButton("Hallo"), BorderLayout.SOUTH);
this.pack();
this.pack();
}
Packing twice still seems a bit weird to me, but it does solve the resizing problems :).
Try this aproach to resize JTextArea based in its model.
Rectangle modelToView = area.modelToView(area.getDocument().getLength());
if (modelToView != null) {
area.setSize(area.getWidth(), Math.max(area.getHeight(), modelToView.height + modelToView.y));
area.doLayout();
}
Hi I have made a JTextArea but it is not scrolling, can someone please tell me why?
JTextArea textArea = new JTextArea(2, 0);
textArea.setText("sdsdsd \n dfdfdf \n dsdsdsdsd \n dsdsdsd \n sdsdsdsd");
textArea.setEditable(false);
JScrollPane scrollPane = new JScrollPane(textArea);
panel.add(textArea);
Also, I would like it to auto scroll down, when new content gets added to, show it only shows the last 2 lines automatically, if possible.
Thanks.
Use,
panel.add(scrollPane);
not
panel.add(textArea);
Add the JScrollPane to the JPanel, not the JTextArea.
To Scroll to the bottom, see this answer.