| 1 | /* $Id: win32wndchild.cpp,v 1.1 1999-07-16 11:32:09 sandervl Exp $ */
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| 2 | /*
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| 3 | * Win32 Child/Parent window class for OS/2
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| 4 | *
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| 5 | *
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| 6 | * Copyright 1998 Sander van Leeuwen (sandervl@xs4all.nl)
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| 7 | *
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| 8 | *
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| 9 | * Project Odin Software License can be found in LICENSE.TXT
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| 10 | *
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| 11 | */
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| 12 | #include <os2win.h>
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| 13 | #include <win32wndchild.h>
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| 14 | #include <misc.h>
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| 15 |
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| 16 | //******************************************************************************
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| 17 | //******************************************************************************
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| 18 | ChildWindow::ChildWindow()
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| 19 | {
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| 20 | parent = 0;
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| 21 | nextchild = 0;
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| 22 | children = 0;
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| 23 | }
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| 24 | //******************************************************************************
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| 25 | //******************************************************************************
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| 26 | ChildWindow::~ChildWindow()
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| 27 | {
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| 28 | if(parent) {
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| 29 | parent->RemoveChild(this);
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| 30 | }
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| 31 | if(children != 0) {
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| 32 | dprintf(("ChildWindow::~ChildWindow children not yet destroyed!!"));
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| 33 | DestroyChildren();
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| 34 | }
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| 35 | }
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| 36 | //******************************************************************************
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| 37 | //LIFO insertion
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| 38 | //******************************************************************************
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| 39 | BOOL ChildWindow::AddChild(ChildWindow *child)
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| 40 | {
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| 41 | mutex.enter();
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| 42 |
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| 43 | child->SetNextChild(children);
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| 44 | children = child;
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| 45 |
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| 46 | mutex.leave();
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| 47 | return TRUE;
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| 48 | }
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| 49 | //******************************************************************************
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| 50 | //Remove child from linked list. Doesn't delete it!
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| 51 | //******************************************************************************
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| 52 | BOOL ChildWindow::RemoveChild(ChildWindow *child)
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| 53 | {
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| 54 | ChildWindow *curchild = children;
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| 55 |
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| 56 | mutex.enter();
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| 57 |
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| 58 | if(curchild == child) {
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| 59 | children = child->GetNextChild();
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| 60 | }
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| 61 | else {
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| 62 | if(curchild == NULL) {
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| 63 | dprintf(("ChildWindow::RemoveChild, children == NULL"));
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| 64 | DebugInt3();
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| 65 | mutex.leave();
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| 66 | return FALSE;
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| 67 | }
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| 68 | while(curchild->GetNextChild() != child) {
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| 69 | curchild = curchild->GetNextChild();
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| 70 | if(curchild == NULL) {
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| 71 | dprintf(("ChildWindow::RemoveChild, curchild == NULL"));
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| 72 | DebugInt3();
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| 73 | mutex.leave();
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| 74 | return FALSE;
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| 75 | }
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| 76 | }
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| 77 | curchild->SetNextChild(child->GetNextChild());
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| 78 | }
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| 79 | mutex.leave();
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| 80 | return TRUE;
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| 81 | }
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| 82 | //******************************************************************************
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| 83 | //******************************************************************************
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| 84 | BOOL ChildWindow::DestroyChildren()
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| 85 | {
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| 86 | while(children) {
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| 87 | delete children; //child dtor removes itself from the linked list
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| 88 | }
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| 89 | return TRUE;
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| 90 | }
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| 91 | //******************************************************************************
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| 92 | //******************************************************************************
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