Changing order of children of an SWT Composite
- by Alexey Romanov
In my case I have two children of a SashForm, but the question applies to all Composites and different layouts.
class MainWindow {
Sashform sashform;
Tree child1 = null;
Table child2 = null;
MainWindow(Shell shell) {
sashform = new SashForm(shell, SWT.NONE);
}
// Not called from constructor because it needs data not available at that time
void CreateFirstChild() {
...
Tree child1 = new Tree(sashform, SWT.NONE);
}
void CreateSecondChild() {
...
Table child2 = new Table(sashform, SWT.NONE);
}
}
I don't know in advance in what order these methods will be called. How can I make sure that child1 is placed on the left, and child2 on the right? Alternately, is there a way to change their order as children of sashform after they are created?
Currently my best idea is to put in placeholders like this:
class MainWindow {
Sashform sashform;
private Composite placeholder1;
private Composite placeholder2;
Tree child1 = null;
Table child2 = null;
MainWindow(Shell shell) {
sashform = new SashForm(shell, SWT.NONE);
placeholder1 = new Composite(sashform, SWT.NONE);
placeholder2 = new Composite(sashform, SWT.NONE);
}
void CreateFirstChild() {
...
Tree child1 = new Tree(placeholder1, SWT.NONE);
}
void CreateSecondChild() {
...
Table child2 = new Table(placeholder2, SWT.NONE);
}
}
