Highlighting swt table row on focus lost

问题

I am facing the same problem mentioned here SWT: Table lost selection . I am using ubuntu 12.04 NOT windows. Is there any way to highlight the selected row of a SWT table even after focus lost. I tried adding focus listener to the table and in focus lost I changed the selected item background colour and on focus gain resets the background colour. See the code.

        @Override
        public void focusLost(FocusEvent e) {
            System.out.println("table focus los");
            TableItem item = fileListTable
                    .getItem(fileListTable.getSelectionIndex());
            prevSelItemBackground = item.getBackground();
            item.setBackground(soureWindow.getSelectionBackground());//Some random colour
            System.out.println(fileListTable.getSelectionIndex());
        }

        @Override
        public void focusGained(FocusEvent e) {
            System.out.println("table focus gain");
            TableItem item = fileListTable
                    .getItem(fileListTable.getSelectionIndex());
            item.setBackground(prevSelItemBackground);
            System.out.println(fileListTable.getSelectionIndex());
        }

But it is not working. Is there any other solution/workaround for this?

回答1:

The below snippet can be used:

    this.fileListTable.addSelectionListener(new SelectionListener() {

    @Override
    public void widgetDefaultSelected(SelectionEvent e) {
        // Nothing to do
    }

    @Override
    public void widgetSelected(SelectionEvent e) {

        int selectionIndex = fileListTable.getSelectionIndex();                                                             
        TableItem[] items = fileListTable.getItems();
        TableItem newItem;
        for (int i = 0; i < items.length; i++) {
        String first = items[i].getText(0);
        String second = items[i].getText(1);
        String third = items[i].getText(2);
        items[i].dispose();
        newItem = new TableItem(fileListTable, SWT.NONE);
        newItem.setText(new String[] { first, second, third });
        if (i == selectionIndex) {
            newItem.setForeground(soureWindow.getSelectionForeground());//Or Anyother color
            newItem.setBackground(soureWindow.getSelectionBackground());//Or Anyother color
        } else {
            newItem.setForeground(Display.getCurrent().getSystemColor(SWT.COLOR_BLACK));//Default foreground color
            newItem.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));//Default background color
        }
        }                
    }
    });

Its is working fine for me but not tested on larger data.

来源：https://stackoverflow.com/questions/17614209/highlighting-swt-table-row-on-focus-lost