Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtmail/include/MotifApp/UIComponent.h

@@ -0,0 +1,113 @@
+/*
+ *+SNOTICE
+ *
+ *	$TOG: UIComponent.h /main/6 1998/01/29 15:18:31 mgreess $
+ *
+ *	RESTRICTED CONFIDENTIAL INFORMATION:
+ *	
+ *	The information in this document is subject to special
+ *	restrictions in a confidential disclosure agreement between
+ *	HP, IBM, Sun, USL, SCO and Univel.  Do not distribute this
+ *	document outside HP, IBM, Sun, USL, SCO, or Univel without
+ *	Sun's specific written approval.  This document and all copies
+ *	and derivative works thereof must be returned or destroyed at
+ *	Sun's request.
+ *
+ *	Copyright 1993 Sun Microsystems, Inc.  All rights reserved.
+ *
+ *+ENOTICE
+ */
+
+///////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+//         This example code is from the book:
+//
+//           Object-Oriented Programming with C++ and OSF/Motif
+//         by
+//           Douglas Young
+//           Prentice Hall, 1992
+//           ISBN 0-13-630252-1	
+//
+//         Copyright 1991 by Prentice Hall
+//         All Rights Reserved
+//
+//  Permission to use, copy, modify, and distribute this software for 
+//  any purpose except publication and without fee is hereby granted, provided 
+//  that the above copyright notice appear in all copies of the software.
+///////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////////////////
+// UIComponent.h: Base class for all C++/Motif UI components
+///////////////////////////////////////////////////////////////
+#ifndef UICOMPONENT_H
+#define UICOMPONENT_H
+
+#ifndef I_HAVE_NO_IDENT
+#endif
+
+#include <Xm/Xm.h>
+#include "BasicComponent.h"
+
+class UIComponent : public BasicComponent {
+    
+  private:
+
+    // Interface between XmNdestroyCallback and this class
+    
+    static void widgetDestroyedCallback ( Widget, 
+					 XtPointer, 
+					 XtPointer );
+    
+  protected:
+    
+    //
+    // Number of pending tasks.
+    // UIComponents with pending tasks should not be terminated.
+    // Used in Application and MainWindow classes to block termination.
+    //
+    int			_numPendingTasks;
+    
+    // Protect constructor to prevent direct instantiation
+    UIComponent ( const char * );
+    
+    void installDestroyHandler(); // Easy hook for derived classes
+    
+    // Called by widgetDestroyedCallback() if base widget is destroyed
+    virtual void widgetDestroyed(); 
+    
+#ifdef DEAD_WOOD
+    // Loads component's default resources into database
+    void setDefaultResources ( const Widget , const String *);
+#endif /* DEAD_WOOD */
+    
+    // Retrieve resources for this clsss from the resource manager
+    void getResources ( const XtResourceList, const int );
+    
+  public:
+    
+    virtual ~UIComponent();
+    
+    // Manage the entire widget subtree represented
+    // by this component. Overrides BasicComponent method
+    virtual void manage();
+    virtual void displayInCurrentWorkspace();
+    virtual void displayInCurrentWorkspace(Widget);
+    
+    // Public access functions
+#ifdef CAN_INLINE_VIRTUALS
+    virtual const char *const className() { return "UIComponent"; }
+#else
+    virtual const char *const className();
+#endif
+	
+    //
+    // Functions for registering and unregistering tasks
+    // which will block termination.
+    //
+    void registerPendingTask() { _numPendingTasks++; }
+    void unregisterPendingTask() { _numPendingTasks--; }
+};
+
+#endif