UI.toString() in a snippet
Ever wanted to get a print out of all components that make up a piece of UI?
This little recursive snippet does that for you.
[code lang=“java“]
private void printChildren(Composite composite, int count) {
StringBuilder spaces = new StringBuilder(count * 2);
for (int i = 0; i < count * 2; i++) {
spaces.append(' ');
}
for (Control c : composite.getChildren()) {
System.out.println(String.format("%s%s (%s)", spaces.toString(), c.toString(), c.getLayoutData()));
if (c instanceof Composite) {
printChildren((Composite) c, count + 1);
}
}
}
[/code] Here's an example of the output: 
[code lang=“text“]
Composite {} (null)
Composite {} (null)
Composite {} (null)
Composite {} (GridData {horizontalAlignment=Undefined 256 grabExcessHorizontalSpace=true verticalAlignment=GridData.CENTER})
Label {Subject:} (GridData {horizontalAlignment=SWT.BEGINNING verticalAlignment=GridData.CENTER})
Label {This is a message about the cool Eclipse RCP!} (GridData {horizontalAlignment=SWT.BEGINNING verticalAlignment=GridData.CENTER})
Label {From:} (GridData {horizontalAlignment=SWT.BEGINNING verticalAlignment=GridData.CENTER})
Link {nicole@mail.org} (GridData {horizontalAlignment=SWT.BEGINNING verticalAlignment=GridData.CENTER})
Label {Date:} (GridData {horizontalAlignment=SWT.BEGINNING verticalAlignment=GridData.CENTER})
Label {10:34 am} (GridData {horizontalAlignment=SWT.BEGINNING verticalAlignment=GridData.CENTER})
Text {} (GridData {horizontalAlignment=SWT.FILL grabExcessHorizontalSpace=true verticalAlignment=SWT.FILL grabExcessVerticalSpace=true})
[/code]