Question

I am using a JFace TableViewer and TableColumnLayout. How can i set a columns minimum width, or at least prevent it from being resized to 0 width?

TableColumnLayout layout = new TableColumnLayout();
parent.setLayout(layout);
TableViewer viewer = new TableViewer(parent, SWT.FULL_SELECTION | SWT.BORDER);

//adding a few columns like this
TableColumn col = new TableColumn(viewer.getTable(), SWT.LEFT);
int minWidth = 100; 
layout.setColumnData(col, new ColumnWeightData(10, minWidth, true));
col.setMoveable(true);
...

It appears that the minWidth parameter of ColumnWeightData is not honored, i can still resize the columns to 0 width.

Using something like this works:

col.addControlListener(new ControlListener(){
    @Override
    public void controlMoved(ControlEvent e) {
    }

    @Override
    public void controlResized(ControlEvent e) {
        if(col.getWidth()<5)
            col.setWidth(5);

    }});

But that seems rather ugly, is there a cleaner way to do it?

Answer 1

Table has no built-in support for this. So a Resize listener – like you have shown in your question – is the only way.