/*
 
Copyright (c) 1990, 1991  X Consortium

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of this software and associated documentation files (the "Software"), to deal
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furnished to do so, subject to the following conditions:

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all copies or substantial portions of the Software.

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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
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 *
 * Copyright 1990, 1991 by UniSoft Group Limited.
 * 
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and that
 * both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of UniSoft not be
 * used in advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.  UniSoft
 * makes no representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * $XConsortium: qrytr.m,v 1.10 94/04/17 21:03:36 rws Exp $
 */
>>TITLE XQueryTree CH04
Status

Display *display = Dsp;
Window w;
Window *root_return = &root;
Window *parent_return = &parent;
Window **children_return = &children;
unsigned int *nchildren_return = &nchildren;
>>EXTERN
/* These are the store locations for the returned data */
static	Window	root;
static	Window	parent;
static	Window	*children;
static	unsigned int	nchildren;

/* Window structure template */
/* A window with three child windows, one of which has */
/* 3 overlapping children */
static	char *QTtemplate[] = {
	".",
	"one . (10,10) 80x70",
	"onec1 one (5,5) 30x30",
	"onec2 one (15,10) 15x15",
	"onec3 one (10,15) 15x15",
	"two . (20,50) 40x20",
	"three . (55,20) 20x20",
};
static	int NQTtemplate = NELEM(QTtemplate);

static	char *QT2template[] = {
	".",
	"one . (10,10) 80x70",
	"o1 one (5,5) 40x40",
	"two . (25,25) 10x10",
	"o2 one (30,30) 40x35",
	"o3 one (20,50) 45x10",
	"o4 one (60,10) 10x10",
	"o5 one (15,35) 30x20",
};
static int NQT2template = NELEM(QT2template);

>>ASSERTION Good A
A successful call to xname returns non-zero, the root window ID in
.A root_return ,
the parent window of the specified window
.A w
in
.A parent_return , 
a pointer to the list of children windows of specified window
.A w
in
.A children_return ,
and the number of children in the list for the specified window
.A w
in
.A nchildren_return .
>># ALTERNATIVE WORDING:
>># A call to xname returns the root window ID of the specified window
>># .A w
>># in
>># .A root_return ,
>># the parent window in
>># .A parent_return ,
>># a pointer to the list of child windows in
>># .A children_return
>># which can be freed with XFree,
>># and the number of child windows in the list in
>># .A nchildren_return .
>>STRATEGY
Create a window hierarchy.
Call xname to query the window tree.
Verify that the root window, parent window, number of children and
	the children array were returned as expected.
>>CODE
Window realparent;
struct buildtree *tree;
Window one, two, three;
Window childarray[3];
int loop;

/* Create a window hierarchy. */
	realparent = defwin(display);
	tree = buildtree(display, realparent, QTtemplate, NQTtemplate);
	one = btntow(tree, "one");
	two = btntow(tree, "two");
	three = btntow(tree, "three");
	childarray[0] = btntow(tree, "onec1"); 
	childarray[1] = btntow(tree, "onec2");
	childarray[2] = btntow(tree, "onec3");
	trace("root window is %0x", DefaultRootWindow(Dsp));
	trace("parent is %0x", realparent);
	trace("one is %0x", one);
	trace("two is %0x", two);
	trace("three is %0x", three);
	for(loop=0; loop<3; loop++)
		trace("onec%d is %0x", loop, childarray[loop]);

/* Call xname to query the window tree. */
#ifdef TESTING
	w = realparent;
#else
	w = one;
#endif
	parent = None;
	root = None;
	children = (Window *)NULL;
	nchildren = -1;
	XCALL;

/* Verify that the root window, parent window, number of children and */
/* 	the children array were returned as expected. */


	if (root != DefaultRootWindow(Dsp)) {	
		FAIL;
		report("%s returned an unexpected value for the root window", TestName);
		report("Expected: %0x", DefaultRootWindow(Dsp)); 
		report("Returned: %0x", root);
	} else
		CHECK;

	if (parent != realparent) {
		FAIL;
		report("%s returned an unexpected value for the parent window", TestName);
		report("Expected: %0x", realparent);
		report("Returned: %0x", parent);
	} else
		CHECK;

	if (nchildren != 3) {
		FAIL;
		report("%s returned an unexpected number of child windows", TestName);
		report("Expected: 3");
		report("Returned: %d", nchildren);
		for(loop=0; loop<nchildren; loop++)
			report("children[%d] is  %0x", loop, children[loop]);
	} else {
		for(loop=0; loop<nchildren; loop++)
		{
			if(children[loop] != childarray[loop]) {
				FAIL;
				report("children array [%d] returned unexpected window", loop);
				report("Expected: %0x", childarray[loop]);
				report("Returned: %0x", children[loop]);
			} else
				CHECK;
		}
		XFree((char*)children);
	}

	CHECKPASS(5);

>>ASSERTION Good A
A call to xname returns the child windows
of the specified window
.A w
in
.A children_return
in current stacking order from bottommost first to topmost last. 
>>STRATEGY
Create a window hierarchy.
Call xname to query the window tree.
Verify that the children array was returned as expected.
>>CODE
Window realparent;
struct buildtree *tree;
Window one, two;
Window childarray[5];
int loop;

/* Create a window hierarchy. */
	realparent = defwin(display);
	tree = buildtree(display, realparent, QT2template, NQT2template);
	one = btntow(tree, "one");
	two = btntow(tree, "two");
	childarray[0] = btntow(tree, "o1");
	childarray[1] = btntow(tree, "o2");
	childarray[2] = btntow(tree, "o3"); 
	childarray[3] = btntow(tree, "o4");
	childarray[4] = btntow(tree, "o5");
	trace("root window is %0x", DefaultRootWindow(Dsp));
	trace("parent is %0x", realparent);
	trace("one is %0x", one);
	trace("two is %0x", two);
	for(loop=0; loop<5; loop++)
		trace("one child %d is %0x", loop, childarray[loop]);

/* Call xname to query the window tree. */
#ifdef TESTING
	w = realparent;
#else
	w = one;
#endif
	parent = None;
	root = None;
	children = (Window *)NULL;
	nchildren = -1;
	XCALL;

/* Verify that the children array was returned as expected. */
	if (nchildren != 5) {
		FAIL;
		report("%s returned an unexpected number of child windows", TestName);
		report("Expected: 5");
		report("Returned: %d", nchildren);
		for(loop=0; loop<nchildren; loop++)
			report("children[%d] is  %0x", loop, children[loop]);
	} else {
		for(loop=0; loop<nchildren; loop++)
		{
			if(children[loop] != childarray[loop]) {
				FAIL;
				report("children array [%d] returned unexpected window", loop);
				report("Expected: %0x", childarray[loop]);
				report("Returned: %0x", children[loop]);
			} else
				CHECK;
		}
		XFree((char*)children);
	}

	CHECKPASS(5);

>>ASSERTION Bad A
.ER BadWindow