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/*
* tixWidget.c --
*
* Constructs Tix-based mega widgets
*
* Copyright (c) 1993-1999 Ioi Kim Lam.
* Copyright (c) 2000-2001 Tix Project Group.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* $Id: tixWidget.c,v 1.7 2008/02/28 04:29:17 hobbs Exp $
*/
#include <tclInt.h>
#include <tixInt.h>
static int ParseOptions(Tcl_Interp *interp, TixClassRecord *cPtr,
CONST84 char *widRec, int argc, CONST84 char** argv);
TIX_DECLARE_CMD(Tix_InstanceCmd);
/*----------------------------------------------------------------------
* Tix_CreateWidgetCmd
*
* Create an instance object of a Tix widget class.
*
* argv[0] = object name.
* argv[1+] = args
*----------------------------------------------------------------------
*/
TIX_DEFINE_CMD(Tix_CreateWidgetCmd)
{
TixClassRecord * cPtr =(TixClassRecord *)clientData;
TixConfigSpec * spec;
CONST84 char * value;
CONST84 char * widRec = NULL;
char * widCmd = NULL, * rootCmd = NULL;
int i;
int code = TCL_OK;
Tk_Window mainWin = Tk_MainWindow(interp);
if (argc <= 1) {
return Tix_ArgcError(interp, argc, argv, 1, "pathname ?arg? ...");
} else {
widRec = argv[1];
}
if (strstr(argv[1], "::") != NULL) {
/*
* Cannot contain :: in widget name, otherwise all hell will
* rise w.r.t. namespace
*/
Tcl_AppendResult(interp, "invalid widget name \"", argv[1],
"\": may not contain substring \"::\"", NULL);
return TCL_ERROR;
}
Tcl_ResetResult(interp);
if (Tk_NameToWindow(interp, widRec, mainWin) != NULL) {
Tcl_AppendResult(interp, "window name \"", widRec,
"\" already exists", NULL);
return TCL_ERROR;
}
/*
* Before doing anything, let's reset the TCL result, errorInfo,
* errorCode, etc.
*/
Tcl_SetVar2(interp, "errorInfo", NULL, "", TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, "errorCode", NULL, "", TCL_GLOBAL_ONLY);
/*
* Set up the widget record
*
* TODO: avoid buffer allocation if possible.
*/
widCmd = ckalloc(strlen(widRec) + 3);
sprintf(widCmd, "::%s", widRec);
rootCmd = ckalloc(strlen(widRec) + 8);
sprintf(rootCmd, "::%s:root", widRec);
Tcl_SetVar2(interp, widRec, "className", cPtr->className, TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, widRec, "ClassName", cPtr->ClassName, TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, widRec, "context", cPtr->className, TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, widRec, "w:root", widRec, TCL_GLOBAL_ONLY);
Tcl_SetVar2(interp, widRec, "rootCmd", rootCmd, TCL_GLOBAL_ONLY);
/* We need to create the root widget in order to parse the options
* database
*/
if (Tix_CallMethod(interp, cPtr->className, widRec, "CreateRootWidget",
argc-2, argv+2, NULL) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
/* Parse the options specified in the option database and supplied
* in the command line.
*/
Tcl_ResetResult(interp);
if (ParseOptions(interp, cPtr, widRec, argc-2, argv+2) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
/* Rename the root widget command and create a new TCL command for
* this widget
*/
if (TclRenameCommand(interp, widCmd, rootCmd) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
Tcl_CreateCommand(interp, widRec, Tix_InstanceCmd,
(ClientData)cPtr, NULL);
/* Now call the initialization methods defined by the Tix Intrinsics
*/
if (Tix_CallMethod(interp, cPtr->className, widRec, "InitWidgetRec",
0, 0, NULL) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
if (Tix_CallMethod(interp, cPtr->className, widRec, "ConstructWidget",
0, 0, NULL) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
if (Tix_CallMethod(interp, cPtr->className, widRec, "SetBindings",
0, 0, NULL) != TCL_OK) {
code = TCL_ERROR;
goto done;
}
/* The widget has been successfully initialized. Now call the config
* method for all -forceCall options
*/
for (i=0; i<cPtr->nSpecs; i++) {
spec = cPtr->specs[i];
if (spec->forceCall) {
value = Tcl_GetVar2(interp, widRec, spec->argvName,
TCL_GLOBAL_ONLY);
if (Tix_CallConfigMethod(interp, cPtr, widRec, spec,
value)!=TCL_OK){
code = TCL_ERROR;
goto done;
}
}
}
Tcl_SetResult(interp, (char *) widRec, TCL_VOLATILE);
done:
if (code != TCL_OK) {
Tk_Window topLevel, tkwin;
Tcl_SavedResult state;
/* We need to save the current interp state as it may be changed by
* some of the following function calls.
*/
Tcl_SaveResult(interp, &state);
Tcl_ResetResult(interp);
/* (1) window */
topLevel = cPtr->mainWindow;
if (widRec != NULL) {
Display *display = NULL;
tkwin = Tk_NameToWindow(interp, widRec, topLevel);
if (tkwin != NULL) {
display = Tk_Display(tkwin);
Tk_DestroyWindow(tkwin);
}
/*
* (2) Clean up widget command + root command. Because widCmd
* and rootCmd contains ::, the commands will be correctly
* deleted from the global namespace.
*/
Tcl_DeleteCommand(interp, widCmd);
Tcl_DeleteCommand(interp, rootCmd);
/* (3) widget record */
Tcl_UnsetVar(interp, widRec, TCL_GLOBAL_ONLY);
if (display) {
#if !defined(__WIN32__) && !defined(MAC_TCL) && !defined(MAC_OSX_TK) /* UNIX */
/* TODO: why is this necessary?? */
XSync(display, False);
#endif
while (1) {
if (Tk_DoOneEvent(TK_X_EVENTS|TK_DONT_WAIT) == 0) {
break;
}
}
}
}
Tcl_RestoreResult(interp, &state);
}
if (widCmd) {
ckfree(widCmd);
}
if (rootCmd) {
ckfree(rootCmd);
}
return code;
}
/*----------------------------------------------------------------------
* Subroutines for object instantiation.
*
*
*----------------------------------------------------------------------
*/
static int ParseOptions(interp, cPtr, widRec, argc, argv)
Tcl_Interp * interp;
TixClassRecord * cPtr;
CONST84 char *widRec;
int argc;
CONST84 char** argv;
{
int i;
TixConfigSpec *spec;
Tk_Window tkwin;
CONST84 char * value;
if ((argc %2) != 0) {
Tcl_AppendResult(interp, "missing argument for \"", argv[argc-1],
"\"", NULL);
return TCL_ERROR;
}
if ((tkwin = Tk_NameToWindow(interp, widRec, cPtr->mainWindow)) == NULL) {
return TCL_ERROR;
}
/* Set all specs by their default values */
/* BUG: default value may be override by options database */
for (i=0; i<cPtr->nSpecs; i++) {
spec = cPtr->specs[i];
if (!spec->isAlias) {
if ((value=Tk_GetOption(tkwin,spec->dbName,spec->dbClass))==NULL) {
value = spec->defValue;
}
if (Tix_ChangeOneOption(interp, cPtr, widRec, spec,
value, 1, 0)!=TCL_OK) {
return TCL_ERROR;
}
}
}
/* Set specs according to argument line values */
for (i=0; i<argc; i+=2) {
spec = Tix_FindConfigSpecByName(interp, cPtr, argv[i]);
if (spec == NULL) { /* this is an invalid flag */
return TCL_ERROR;
}
if (Tix_ChangeOneOption(interp, cPtr, widRec, spec,
argv[i+1], 0, 1)!=TCL_OK) {
return TCL_ERROR;
}
}
return TCL_OK;
}
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