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Bug 496349

Summary:	ClassCastException in ControlThemeAdapterImpl: ToolItem cannot be cast to Control
Product:	[RT] RAP	Reporter:	Tobias Hofer <tobias.hofer>
Component:	RWT	Assignee:	Project Inbox <rap-inbox>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	P2	CC:	ivan
Version:	3.1
Target Milestone:	3.2 M1
Hardware:	All
OS:	Linux
See Also:	https://git.eclipse.org/r/#/c/75538/
Whiteboard:	sr311

Description Tobias Hofer

2016-06-18 18:30:26 EDT

Caused by: java.lang.ClassCastException: org.eclipse.swt.widgets.ToolItem cannot be cast to org.eclipse.swt.widgets.Control
	at org.eclipse.swt.internal.widgets.controlkit.ControlThemeAdapterImpl$1.matches(ControlThemeAdapterImpl.java:34)
	at org.eclipse.rap.rwt.internal.theme.WidgetMatcher.matches(WidgetMatcher.java:61)
	at org.eclipse.rap.rwt.internal.theme.WidgetMatcher.select(WidgetMatcher.java:51)
	at org.eclipse.rap.rwt.internal.theme.ThemeUtil.getCssValue(ThemeUtil.java:149)
	at org.eclipse.rap.rwt.internal.theme.ThemeUtil.getCssValue(ThemeUtil.java:137)
	at org.eclipse.rap.rwt.internal.theme.ThemeAdapter.getCssBorderWidth(ThemeAdapter.java:74)
	at org.eclipse.rap.rwt.internal.theme.ThemeAdapter.getCssBorder(ThemeAdapter.java:66)
	at org.eclipse.swt.internal.widgets.toolbarkit.ToolBarThemeAdapter.getItemBorder(ToolBarThemeAdapter.java:36)
	at org.eclipse.swt.widgets.ToolItem.getBorder(ToolItem.java:638)
	at org.eclipse.swt.widgets.ToolItem.getFrameWidth(ToolItem.java:626)
	at org.eclipse.swt.widgets.ToolItem.getPreferredWidth(ToolItem.java:621)
	at org.eclipse.swt.widgets.ToolItem.getWidth(ToolItem.java:574)
	at org.eclipse.swt.widgets.ToolItem.getBounds(ToolItem.java:496)
	at org.eclipse.swt.widgets.ToolBar.layoutItems(ToolBar.java:385)
	at org.eclipse.swt.widgets.ToolItem.setImage(ToolItem.java:211)

Comment 1 Ivan Furnadjiev

2016-06-20 03:54:44 EDT

I can reproduce it with our Controls Demo -> ToolBar Tab and modified default theme (added ToolItem:disabled{border: 1px solid red;}). As a temporary workaround, please remove from your theme the styling for disabled ToolItem.

Comment 2 Ivan Furnadjiev

2016-06-20 04:51:02 EDT

Pending fix: https://git.eclipse.org/r/#/c/75538/

Comment 3 Ivan Furnadjiev

2016-06-21 05:42:51 EDT

Fixed in master with change https://git.eclipse.org/r/#/c/75538/

Comment 4 Ivan Furnadjiev

2016-08-31 02:53:08 EDT

Backported to 3.1-maintenance branch.