Bug 4273 Compiler option changes not handled correctly (1GKWRI3)
Nothing happens if auto-build is on and (some) compiler options are changed . If something was reported as error and now I choose that to be reported as warning and if autobuild is on I expect a rebuild. Same if I switch from 1.2 to 1.3 compatibilty. NOTES: EG (01.10.2001 14:57:06) we should prompt the user for a rebuild whenever an option changes. MA (01.10.2001 15:16:25) The description in the pages says everything. EG (02.10.2001 18:16:59) yes, but this is isn't sufficient. We should show a dialog with the option to rebuild the workspace after apply.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerPreferencePage.java
GridLayout layout= new GridLayout();
		layout.numColumns= 2;
		Composite warningsComposite= new Composite(folder, SWT.NULL);
		warningsComposite.setLayout(layout);
		String label= JavaUIMessages.getString("CompilerPreferencePage.pb_unreachable_code.label"); 
		addComboBox(warningsComposite, label, PREF_PB_UNREACHABLE_CODE, errorWarningIgnore, errorWarningIgnoreLabels);	
		
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_invalid_import.label"); 
		addComboBox(warningsComposite, label, PREF_PB_INVALID_IMPORT, errorWarningIgnore, errorWarningIgnoreLabels);
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_overriding_pkg_dflt.label"); 
		addComboBox(warningsComposite, label, PREF_PB_OVERRIDING_PACKAGE_DEFAULT_METHOD, errorWarningIgnore, errorWarningIgnoreLabels);			
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_method_naming.label"); 
		addComboBox(warningsComposite, label, PREF_PB_METHOD_WITH_CONSTRUCTOR_NAME, errorWarningIgnore, errorWarningIgnoreLabels);			
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_deprecation.label"); 
		addComboBox(warningsComposite, label, PREF_PB_DEPRECATION, errorWarningIgnore, errorWarningIgnoreLabels);
		
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_hidden_catchblock.label"); 
		addComboBox(warningsComposite, label, PREF_PB_HIDDEN_CATCH_BLOCK, errorWarningIgnore, errorWarningIgnoreLabels);
		
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_unused_local.label"); 
		addComboBox(warningsComposite, label, PREF_PB_UNUSED_LOCAL, errorWarningIgnore, errorWarningIgnoreLabels);
		
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_unused_parameter.label"); 
		addComboBox(warningsComposite, label, PREF_PB_UNUSED_PARAMETER, errorWarningIgnore, errorWarningIgnoreLabels);
		
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_synth_access_emul.label"); 
		addComboBox(warningsComposite, label, PREF_PB_SYNTHETIC_ACCESS_EMULATION, errorWarningIgnore, errorWarningIgnoreLabels);
		label= JavaUIMessages.getString("CompilerPreferencePage.pb_non_externalized_strings.label"); 
		addComboBox(warningsComposite, label, PREF_PB_NON_EXTERNALIZED_STRINGS, errorWarningIgnore, errorWarningIgnoreLabels);