net.sf.cuf.ui.table.ContextMenuActionVisibilityDialog Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of cuf-swing Show documentation
The newest version!
package net.sf.cuf.ui.table;

import net.sf.cuf.ui.SwingDecorator;

import javax.swing.JOptionPane;


/**
 * Context menu action to perform a {@link VisibilityDialog} and apply the results on the table.
 *
 * @author  Hendrik Wördehoff, sd&m AG
 */
public class ContextMenuActionVisibilityDialog
extends ContextMenuAction
{
    /**
     * Visibility dialog for the table.
     * Will be instantiated when needed.
     */
    private VisibilityDialog mVisDialog = null;

    public String getKennung()
    {
        return mAdapter.getContextMenuKennung()+"_SHOWHIDE";
    }

    /**
     * @return  always true
     */
    public boolean isEnabled()
    {
        return true;
    }

    /**
     * The visibility dialog is opened initialised with the current model and visibility of the table.
     * Afterwards the changes of the customer are applied to the table.
     * 
     * The table returned by {@link ContextMenuAdapter#getTable} must be a {@link SortingTable}.
     * @throws  IllegalStateException  if the table does not (yet) reside in a {@link java.awt.Frame}
     */
    public void performAction()
    throws IllegalStateException
    {
        SortingTable table = (SortingTable) mAdapter.getTable();
        boolean[] visibility = table.getColumnsVisible();

        outer:
        for ( ; ; )
        {
            // show the dialog
            visibility = getVisibilityDialog().show(mAdapter.getTable().getModel(), visibility);

            // evaluate the result
            if ( visibility == null )
            {
                return;  // return without changing the visibility
            }

            // is at least one column still visible?
            for (final boolean aVisibility : visibility)
            {
                if (aVisibility)
                {
                    break outer;  // proceed with changing the visibility
                }
            }

            // warning message when trying to hide all columns
            JOptionPane.showMessageDialog(mAdapter.getFrameForTable(),
                                          SwingDecorator.getText ("TABLEVIS_MESSAGE"),
                                          SwingDecorator.getTitle("TABLEVIS_MESSAGE"),
                                          JOptionPane.WARNING_MESSAGE);
        }

        // change the visibility
        table.setColumnsVisible(visibility);
    }

    /**
     * Instantiate the visibility dialog lazily.
     * This call only succeeds after the table has been embedded into a window.
     * @return  the visibility dialog for this context menu
     * @throws  IllegalStateException  if the table does not (yet) reside in a {@link java.awt.Frame}
     */
    private VisibilityDialog getVisibilityDialog()
    throws IllegalStateException
    {
        if ( mVisDialog == null )
        {
            mVisDialog = new VisibilityDialog(mAdapter.getFrameForTable());
        }
        return mVisDialog;
    }
}