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Copying icon and string from one JList to another JList

3 replies on 1 page. Most recent reply: Feb 23, 2004 3:01 PM by Daniel Liu

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Daniel Liu

Posts: 11
Nickname: hhliu
Registered: Feb, 2004

Copying icon and string from one JList to another JList

Posted: Feb 21, 2004 9:21 AM

Hello,

I need copy icon and string from one JList to another JList.

All the icons and strings are already shown in the first JList on the interface. But, when I select the icon and string from the first JList and then click the add button, the second JList shows: null (no image available).

The following is the code segment, could any one help have a look and find the problem?

imageList = new JList(intArray);
imageListRenderer imageRenderer= new imageListRenderer();
imageRenderer.setPreferredSize(new Dimension(200, 125));

imageList.setCellRenderer(imageRenderer);
imageList.setVisibleRowCount(7);
imageList.setFixedCellHeight(125);
imageList.setLayoutOrientation(JList.HORIZONTAL_WRAP); imageList.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
JScrollPane imageScrollPane1 = new JScrollPane(imageList);

imageScrollPane1.setPreferredSize(new Dimension(1000, 260));
panel2.add(imageScrollPane1);

personModel = new DefaultListModel();
personList = new JList(personModel);

personListRenderer personRenderer= new personListRenderer();
personRenderer.setPreferredSize(new Dimension(200, 125));
personList.setCellRenderer(personRenderer);

personList.setVisibleRowCount(3);
personList.setFixedCellHeight(125);

personList.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);

JScrollPane personScrollPane1 = new JScrollPane(personList);

personScrollPane1.setPreferredSize(new Dimension(200, 260));
panel9.add(personScrollPane1);

// handle button events
public void actionPerformed( ActionEvent event )
{
if (event.getSource() == addPersonButton)
{
personModel.addElement(imageList.getSelectedValue());
}
}

Thanks,

Daniel

Viswanatha Basavalingappa

Posts: 84
Nickname: viswagb
Registered: Nov, 2003

Re: Copying icon and string from one JList to another JList

Posted: Feb 23, 2004 5:06 AM

try to use the java API under Package
java.awt.datatransfer

it may help you..

Viswa
--------

mausam

Posts: 243
Nickname: mausam
Registered: Sep, 2003

Re: Copying icon and string from one JList to another JList

Posted: Feb 23, 2004 7:31 AM

One probabilty can be your condition
if (event.getSource() == addPersonButton)
{
}
is not getting satisfied and the control is not going inside this condition.

Try a System.out.println() inside the condition to make sure that the cntrl goes into the if condition.

Check http://java.sun.com/docs/books/tutorial/uiswing/components/example-1dot4/index.html#ListDemo

for list demo

Daniel Liu

Posts: 11
Nickname: hhliu
Registered: Feb, 2004

Re: Copying icon and string from one JList to another JList

Posted: Feb 23, 2004 3:01 PM

I added
System.out.println("addPersonButton clicked");
into
if (event.getSource() == addPersonButton)
{
}

When I click the addPersonButton on the interface,
the string "addPersonButton clicked" was printed.

So, the condition of the button works.

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