Bug 577566

Summary:	[Label] Label should request layout if the text changes
Product:	[Eclipse Project] Platform	Reporter:	Christoph Laeubrich <laeubi>
Component:	SWT	Assignee:	Platform-SWT-Inbox <platform-swt-inbox>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	P3
Version:	4.22
Target Milestone:	---
Hardware:	All
OS:	All
See Also:	https://bugs.eclipse.org/bugs/show_bug.cgi?id=577140
Whiteboard:

Description Christoph Laeubrich

2021-12-01 10:21:57 EST

This is one of the most annoying things that has bitten me to often so I'd open a bug for it now.

Given I construct a label and it is part of a control with layout, it keeps its *initial text size*.

For simplicity consider the label is empty by default, and changes e.g. by a button click, then it seems that the button has no effect as the label never changes (as its initial size is zero).

What works is doing the following:

label.setText(String.valueOf(sum));
label.requestLayout();

but this is really useless boilerplate, the label should simply be requesting the layout whenever its current text != new text (or simply always when setText is called, whatever is easier).

This is similar to Bug 577140