CODEWITHSUNDEEP
javaswingjpanel
eatSleepCode
eatSleepCode

Reputation: 4637

JPanel size issue

I have Added two JPanels into a JPanel with GridBagLayout. Now the issue is :

When the main panel loads it shows the upper panel bit above the actual place it should be and when data from db loads into the JTextfields and JComboBox then panel goes to its actual size.

sample code:

public class JPanelIssue extends JPanel {
    public JPanelIssue() {
    JPanel mainPanel = new JPanel(new GridBagLayout());
    JPanel panel1 = new JPanel();
    JPanel panel2 = new JPanel();
    mainPanel.add(panel1, new GridBagConstraints(0, 0, 1, 1, 1.0, 0.6, GridBagConstraints.NORTHWEST, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    mainPanel.add(panel2, new GridBagConstraints(0, 1, 1, GridBagConstraints.REMAINDER, 1.0, 0.4,GridBagConstraints.NORTHWEST, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));

    add(mainPanel, new GridBagConstraints(0, 0, 1, 1, 1.0, 1.0, GridBagConstraints.NORTHWEST, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    }
}

panel1 contains fields related to search criteria and panel2 contains JTable dispalying reults.

Is there any problem of AWT event queue or any other problem?

Thanks in advance.

Upvotes: 0

Views: 90

Answers (1)

mKorbel
mKorbel

Reputation: 109815

comment only

not reproducible from this code snipped, because you forgot to add something about JTextfields and JComboBox then panel goes to its actual size.

When the main panel loads it shows the upper panel bit above the actual place it should be and when data from db loads into the JTextfields and JComboBox then panel goes to its actual size.

GBC is based on PreferredSize came from JComponents back to the contianer (by assuming that about JPanel)

there are two ways

  1. (proper)set proper PreferredSize for JTextField and JComboBox too

  2. (sizing hack)override getPreferredSize for JPanel contains JTextField and JComboBox

  3. then all another parent(s) / containers should be notified without override any setSize, setBounds, setPreferredSize, only by JFrame.pack()

Upvotes: 2

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