| 1 |
/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tkmacwinmenu.c,v 1.1.1.1 2001/06/13 05:05:02 dtashley Exp $ */
|
| 2 |
|
| 3 |
/*
|
| 4 |
* tkMacWinMenu.c --
|
| 5 |
*
|
| 6 |
* This module implements the common elements of the Mac and Windows
|
| 7 |
* specific features of menus. This file is not used for UNIX.
|
| 8 |
*
|
| 9 |
* Copyright (c) 1996-1997 by Sun Microsystems, Inc.
|
| 10 |
*
|
| 11 |
* See the file "license.terms" for information on usage and redistribution
|
| 12 |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
| 13 |
*
|
| 14 |
* RCS: @(#) $Id: tkmacwinmenu.c,v 1.1.1.1 2001/06/13 05:05:02 dtashley Exp $
|
| 15 |
*/
|
| 16 |
|
| 17 |
#include "tkMenu.h"
|
| 18 |
|
| 19 |
typedef struct ThreadSpecificData {
|
| 20 |
int postCommandGeneration;
|
| 21 |
} ThreadSpecificData;
|
| 22 |
static Tcl_ThreadDataKey dataKey;
|
| 23 |
|
| 24 |
|
| 25 |
static int PreprocessMenu _ANSI_ARGS_((TkMenu *menuPtr));
|
| 26 |
|
| 27 |
|
| 28 |
/*
|
| 29 |
*----------------------------------------------------------------------
|
| 30 |
*
|
| 31 |
* PreprocessMenu --
|
| 32 |
*
|
| 33 |
* The guts of the preprocessing. Recursive.
|
| 34 |
*
|
| 35 |
* Results:
|
| 36 |
* The return value is a standard Tcl result (errors can occur
|
| 37 |
* while the postcommands are being processed).
|
| 38 |
*
|
| 39 |
* Side effects:
|
| 40 |
* Since commands can get executed while this routine is being executed,
|
| 41 |
* the entire world can change.
|
| 42 |
*
|
| 43 |
*----------------------------------------------------------------------
|
| 44 |
*/
|
| 45 |
|
| 46 |
static int
|
| 47 |
PreprocessMenu(menuPtr)
|
| 48 |
TkMenu *menuPtr;
|
| 49 |
{
|
| 50 |
int index, result, finished;
|
| 51 |
TkMenu *cascadeMenuPtr;
|
| 52 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
| 53 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
| 54 |
|
| 55 |
Tcl_Preserve((ClientData) menuPtr);
|
| 56 |
|
| 57 |
/*
|
| 58 |
* First, let's process the post command on ourselves. If this command
|
| 59 |
* destroys this menu, or if there was an error, we are done.
|
| 60 |
*/
|
| 61 |
|
| 62 |
result = TkPostCommand(menuPtr);
|
| 63 |
if ((result != TCL_OK) || (menuPtr->tkwin == NULL)) {
|
| 64 |
goto done;
|
| 65 |
}
|
| 66 |
|
| 67 |
/*
|
| 68 |
* Now, we go through structure and process all of the commands.
|
| 69 |
* Since the structure is changing, we stop after we do one command,
|
| 70 |
* and start over. When we get through without doing any, we are done.
|
| 71 |
*/
|
| 72 |
|
| 73 |
|
| 74 |
do {
|
| 75 |
finished = 1;
|
| 76 |
for (index = 0; index < menuPtr->numEntries; index++) {
|
| 77 |
if ((menuPtr->entries[index]->type == CASCADE_ENTRY)
|
| 78 |
&& (menuPtr->entries[index]->namePtr != NULL)) {
|
| 79 |
if ((menuPtr->entries[index]->childMenuRefPtr != NULL)
|
| 80 |
&& (menuPtr->entries[index]->childMenuRefPtr->menuPtr
|
| 81 |
!= NULL)) {
|
| 82 |
cascadeMenuPtr =
|
| 83 |
menuPtr->entries[index]->childMenuRefPtr->menuPtr;
|
| 84 |
if (cascadeMenuPtr->postCommandGeneration !=
|
| 85 |
tsdPtr->postCommandGeneration) {
|
| 86 |
cascadeMenuPtr->postCommandGeneration =
|
| 87 |
tsdPtr->postCommandGeneration;
|
| 88 |
result = PreprocessMenu(cascadeMenuPtr);
|
| 89 |
if (result != TCL_OK) {
|
| 90 |
goto done;
|
| 91 |
}
|
| 92 |
finished = 0;
|
| 93 |
break;
|
| 94 |
}
|
| 95 |
}
|
| 96 |
}
|
| 97 |
}
|
| 98 |
} while (!finished);
|
| 99 |
|
| 100 |
done:
|
| 101 |
Tcl_Release((ClientData)menuPtr);
|
| 102 |
return result;
|
| 103 |
}
|
| 104 |
|
| 105 |
/*
|
| 106 |
*----------------------------------------------------------------------
|
| 107 |
*
|
| 108 |
* TkPreprocessMenu --
|
| 109 |
*
|
| 110 |
* On the Mac and on Windows, all of the postcommand processing has
|
| 111 |
* to be done on the entire tree underneath the main window to be
|
| 112 |
* posted. This means that we have to traverse the menu tree and
|
| 113 |
* issue the postcommands for all of the menus that have cascades
|
| 114 |
* attached. Since the postcommands can change the menu structure while
|
| 115 |
* we are traversing, we have to be extremely careful. Basically, the
|
| 116 |
* idea is to traverse the structure until we succesfully process
|
| 117 |
* one postcommand. Then we start over, and do it again until
|
| 118 |
* we traverse the whole structure without processing any postcommands.
|
| 119 |
*
|
| 120 |
* We are also going to set up the cascade back pointers in here
|
| 121 |
* since we have to traverse the entire structure underneath the menu
|
| 122 |
* anyway, We can clear the postcommand marks while we do that.
|
| 123 |
*
|
| 124 |
* Results:
|
| 125 |
* The return value is a standard Tcl result (errors can occur
|
| 126 |
* while the postcommands are being processed).
|
| 127 |
*
|
| 128 |
* Side effects:
|
| 129 |
* Since commands can get executed while this routine is being executed,
|
| 130 |
* the entire world can change.
|
| 131 |
*
|
| 132 |
*----------------------------------------------------------------------
|
| 133 |
*/
|
| 134 |
|
| 135 |
int
|
| 136 |
TkPreprocessMenu(menuPtr)
|
| 137 |
TkMenu *menuPtr;
|
| 138 |
{
|
| 139 |
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
| 140 |
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
| 141 |
|
| 142 |
tsdPtr->postCommandGeneration++;
|
| 143 |
menuPtr->postCommandGeneration = tsdPtr->postCommandGeneration;
|
| 144 |
return PreprocessMenu(menuPtr);
|
| 145 |
}
|
| 146 |
|
| 147 |
|
| 148 |
/* $History: tkMacWinMenu.c $
|
| 149 |
*
|
| 150 |
* ***************** Version 1 *****************
|
| 151 |
* User: Dtashley Date: 1/02/01 Time: 2:59a
|
| 152 |
* Created in $/IjuScripter, IjuConsole/Source/Tk Base
|
| 153 |
* Initial check-in.
|
| 154 |
*/
|
| 155 |
|
| 156 |
/* End of TKMACWINMENU.C */ |
Parent Directory
| 
Revision Log