;
;	File:		InvalMenuBarPatch.a
;
;	Contains:	implementation of the InvalMenuBar trap as a patch
;
;	Written by:	Darin Adler
;
;	Copyright:	© 1990, 1992 by Apple Computer, Inc., all rights reserved.
;
;   This file is used in these builds: BigBang
;
;	Change History (most recent first):
;
;	   <SM2>	 5/20/92	TN		Moved new InvalMenuBar routines to MenuMgrExtensions.a
;		 <7>	 4/16/91	KSM		dba,#86852: Add reentrancy bit to fix case where Think Pascal
;									patches DrawMenuBar to call HiliteMenu and we die in a recursive
;									patch conflict.
;		 <6>	 3/29/91	JSM		dba, #85831: Add support for MenuBarGlobalInvalidBit in
;									ValidateMenuBarWhenDrawing and ValidateMenuBar.
;		 <5>	 7/25/90	dba		fix bug that shows up in THINK Pascal (which patches DrawMenuBar
;									to call HiliteMenu) by clearing the invalid bit before calling
;									DrawMenuBar; also get rid of the patch to CheckUpdate that calls
;									validate, since the Layer Manager’s CheckUpdate has a call
;									inside of it now
;		 <4>	 7/13/90	KSM		Add ValidateMenuBar call for WindowMgr's CheckUpdate comefrom
;									patch and to save a tiny bit of code.
;		 <3>	  7/9/90	KSM		Changed InvalMenuBar proc to use opword.
;		 <2>	  6/7/90	EMT		Fix module names so they won’t be likely to conflict with other
;									patches.
;		 <1>	  4/9/90	dba		new to the system today
;
;	To Do:
;		roll into Menu Manager and Window Manager source
;

		load	'StandardEqu.d'
		include	'LinkedPatchMacros.a'
		include	'MenuMgrPriv.a'


;————————————————————————————————————————————————————————————————————————————————————————————————————
; DrawMenuBar clear MenuBarInvalidBit and MenuBarGlobalInvalidBit
;
; Note: We depend on the fact that this patch gets invoked after the Process Mgr patch that
; determines whether or not to actually draw the menu bar.  Otherwise, we could clear the global
; dirty even if the DrawMenuBar never happens, which we don’t want to do.

; Clear the low memory bits whenever we draw the menu bar.

ValidateMenuBarWhenDrawing PatchProc _DrawMenuBar,(Plus,SE,II,Portable,IIci)

		bclr	#MenuBarInvalidBit,MenuBarInvalidByte					; clear the local invalid bit
		bclr	#MenuBarGlobalInvalidBit,MenuBarGlobalInvalidByte		; clear the global invalid bit	<6>
		jmpOld

				EndProc

;————————————————————————————————————————————————————————————————————————————————————————————————————
; MenuSelect draw menu bar if invalid

DrawMenuBarIfInvalidOnMenuSelect PatchProc _MenuSelect,(Plus,SE,II,Portable,IIci)

		IMPORT	ValidateMenuBar
		jsr		ValidateMenuBar
		jmpOld

				EndProc

;————————————————————————————————————————————————————————————————————————————————————————————————————
; HiliteMenu draw menu bar if invalid

DrawMenuBarIfInvalidOnHiliteMenu PatchProc _HiliteMenu,(Plus,SE,II,Portable,IIci)

		IMPORT	ValidateMenuBar
		jsr		ValidateMenuBar
		jmpOld

				EndProc

				end