Bug 141255 No error for the incompatible parameter value
Steps to reproduce: 1.New a decimal parameter, set the default value to "aaa" 2.Preview the report by "Preview" tab Expected result: Error to say the incompatible parameter value Actual result: Parameter request page keeps poping up till input the decimal value Note: if preview in Web Viewer, error will be thrown out, but no exception description.
UI/org.eclipse.birt.report.designer.ui.preview/src/org/eclipse/birt/report/designer/ui/preview/editors/ReportPreviewFormPage.java
}
	public void initialize( FormEditor editor )
	{
		this.editor = editor;
	}
	public FormEditor getEditor( )
	{
		return editor;
	}
	public IManagedForm getManagedForm( )
	{
		return null;
	}
	public void setActive( boolean active )
	{
	}
	public boolean isActive( )
	{
		return false;
	}
	public boolean canLeaveThePage( )
	{
		return true;
	}
	public int getIndex( )
	{
		return 0;
	}
	public void setIndex( int index )
	{