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Bug 333272

Summary:	Prevent illegal subclassing of widgets in RAP
Product:	[RT] RAP	Reporter:	Ralf Sternberg <rsternberg>
Component:	RWT	Assignee:	Project Inbox <rap-inbox>
Status:	NEW ---	QA Contact:
Severity:	enhancement
Priority:	P3	CC:	ruediger.herrmann
Version:	1.4
Target Milestone:	---
Hardware:	PC
OS:	Linux
Whiteboard:

Description Ralf Sternberg

2010-12-28 11:55:54 EST

SWT Widgets prevent illegal subclassing by means of the Widget#checkSubclass() method. This method is not effective in RAP due to historical reasons (Some illegal subclassing was unavoidable in the early days). From my point of view, we can and should now implement this mechanism properly.

To be revised:
* Display#isValidClass()
* Widget#checkSubclass() overrides in subclasses