[Tizen]

I have JPanel wrapped in a JScrollPane, and I'm creating instances my items which use a JPanel, but when I place these into the JPanel wrapped inside a JScrollPane, the JScrollPane won't allow me to scroll.

Image: https://i.gyazo.com/a276cd66e4ecd3473698...0c4b7c.png

In more detail; here's my components list: https://i.gyazo.com/f7736b88f0a7057659d8...9422f1.png

Now in the JPanel "panel_servers", I'm placing more instances of JPanel (because each shop item has their own JPanel). And when I do that, scrollPane7 does not allow me to scroll right to see the other shop items.

[Bibl]

post code pls, i cant diagnose without it

[Cosa Nostra]

The content that you want scrollable must be on the pane passed to the JScrollBar. Also, it must be populated with content before you pass it or it may have problems ascertaining the dimension. At least I know this was a problem in JDK 1.6, but yeah. Post your code else we won't know for sure.

[MrOrang]

JPane needs to be Scrollable which is obviously isn't. Look for a container that implements scrollable then add that component to the scrollpane.

Kinda tired right now so I may be wrong but I think that's your problem.

[Cosa Nostra]

JPane needs to be Scrollable which is obviously isn't. Look for a container that implements scrollable then add that component to the scrollpane.

Kinda tired right now so I may be wrong but I think that's your problem.

Correct me if I'm wrong, but I think this is what he wants to do:
http://pastebin.com/2jmkyGhi

Which results in a scrollable nested cluster of panels:


My money is still on the fact that when you dynamically add into a scroll panel in java, it's a little problematic because the ScrollPanel logic dictates its vertical and horizontal size at construction and on repaints. There are some methods that allow you to fire that the internal data has changed though, but they're a little complicated and I'd need to see your code first before bothering with an example on that. You could try to just call repaint() on it, but I don't know if that'd do it.

If you want me to help you out and invest time creating a panel that scrolls that you can add and remove from, let me know and I'll help you out.

[Bibl]

Correct me if I'm wrong, but I think this is what he wants to do:
http://pastebin.com/2jmkyGhi

Which results in a scrollable nested cluster of panels:


My money is still on the fact that when you dynamically add into a scroll panel in java, it's a little problematic because the ScrollPanel logic dictates its vertical and horizontal size at construction and on repaints. There are some methods that allow you to fire that the internal data has changed though, but they're a little complicated and I'd need to see your code first before bothering with an example on that. You could try to just call repaint() on it, but I don't know if that'd do it.

If you want me to help you out and invest time creating a panel that scrolls that you can add and remove from, let me know and I'll help you out.

call validate on it

Code

public static void main(String[] args) throws InterruptedException {
        // create an instance of the frame
        CalendarFrame frame = new CalendarFrame();
        // display to screen
        frame.setVisible(true);

        Thread.sleep(1000);
        frame.doit();
    }

Code

public class CalendarDisplay extends JPanel {

    private static final long serialVersionUID = 5374598999409020666L;

    public CalendarDisplay() {
        // basically setup a box like view, 0=no set limit on the amount of rows, 7=7 columns (7 days of the week)
        super(new GridLayout(0, 7, 1, 1));

        Year year = new Year(2000);
        Month month = Month.FEBRUARY;

        String[] days = new String[] { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" };
        // (days.length * 10) = 10 weeks, change it to however you need it
        for (int i = 0; i < month.getLength(year); i++) {
            // [i % 7] divide 0 by 7 and get the remainder(the name of the week)
            CalendarBox box = new CalendarBox(days[i % 7]);
            // add this box to the view
            add(box);
        }
    }

    public void doit() {
        Year year = new Year(2010);
        Month month = Month.FEBRUARY;

        String[] days = new String[] { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" };
        // (days.length * 10) = 10 weeks, change it to however you need it
        for (int i = 0; i < month.getLength(year); i++) {
            // [i % 7] divide 0 by 7 and get the remainder(the name of the week)
            CalendarBox box = new CalendarBox(days[i % 7]);
            // add this box to the view
            add(box);
        }
    }
}

Code

package calendar.ui;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ScrollPaneLayout;

public class CalendarFrame extends JFrame {

    private static final long serialVersionUID = -2122161377842820073L;

    public CalendarDisplay calendarPanel;

    public CalendarFrame() {
        // set the title; can also call setTitle("Calendar");
        super("Calendar");
        // make it so when we press the 'x' button the window and program exits
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // creates the background jpanel we add everything to
        JPanel tempPanel = new JPanel(new BorderLayout());
        // just set the original size of the panel (and in turn the frame, when java dynamically resizes)
        tempPanel.setSize(850, 450);
        tempPanel.setPreferredSize(tempPanel.getSize());

        {
            // Creates the display panel
            calendarPanel = new CalendarDisplay();
            // applies it to a scrollpane so that we can scroll through if there are more days than can be displayed
            JScrollPane scrollPane = new JScrollPane(calendarPanel);
            // this fixes a wierd bug with the scrollpane overlapping the boxes, dw about it
            scrollPane.setLayout(new ScrollPaneLayout() {
                private static final long serialVersionUID = -4604183237728799574L;

                @Override
                public Dimension preferredLayoutSize(Container parent) {
                    Dimension dim = super.preferredLayoutSize(parent);
                    JScrollPane pane = (JScrollPane) parent;
                    Component comp = pane.getViewport().getView();
                    Dimension viewPref = comp.getPreferredSize();
                    Dimension port = pane.getViewport().getExtentSize();
                    // **Edit 2** changed condition to <= to prevent jumping
                    if (port.height < viewPref.height) {
                        dim.width += pane.getVerticalScrollBar().getPreferredSize().width;
                    }
                    return dim;
                }
            });
            scrollPane.validate();
            scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
            scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
            // put the calendar display to the left (east)
            JPanel bottomPanel = new JPanel(new BorderLayout(10, 10));
            bottomPanel.add(scrollPane, BorderLayout.EAST);
            tempPanel.add(bottomPanel);
        }

        {
            // Creates the menubar at the top
            JMenuBar menuBar = new JMenuBar();
            // the file menu
            JMenu fileMenu = new JMenu("File");
            // sets the f in file to be displayed nicely i think
            fileMenu.setMnemonic('F');
            // create the 2 menu options
            JMenuItem openItem = new JMenuItem("Open");
            JMenuItem saveItem = new JMenuItem("Save");
            // add the options to the file menu
            fileMenu.add(openItem);
            fileMenu.add(saveItem);
            // add the file menu to the main menu bar at the top
            menuBar.add(fileMenu);
            // set the frames menubar as ours
            setJMenuBar(menuBar);
        }

        // just add all the stuff to the frame; you could alternatively do add(tempPanel); but oh well

        getContentPane().add(tempPanel);

        // basically squeezes the components are resizes them dynamically for us
        pack();
        // put it in the middle of the screen
        setLocationRelativeTo(null);
    }

    public void doit() {
        calendarPanel.doit();
        validate();
    }
}

[img]http://λ.pw/gcb[/img]

[Cosa Nostra]

call validate on it

Ahahaha, I knew there was a method to toggle dataChanged. Nice call. Just like fireDataChanged() when dealing with JTable. I got lazy and didn't look it up xD.

[Tizen]

I've update the OP with more detail on the problem. Thanks!

[Bibl]

need the code
you should learn to use the components without a gui builder

[Cosa Nostra]

I just also remembered, if there is no layout set for the panel that is inside of the scroll pane, the size is not dynamically passed to the parent component. So, setting a layout may also help you if you have not.

EDIT: Oh, fuck me, you're using a GUI builder? No wonder you're having problems.

[Tizen]

https://i.gyazo.com/4bae349398284324c727...8d0dea.png

Managed to get it in the end! Thanks for help guys!