From 4dd096e7b52301663ddaa002984e10cb83d97b9a Mon Sep 17 00:00:00 2001
From: Bill Spitzak <spitzak@gmail.com>
Date: Fri, 16 Jun 2000 07:28:03 +0000
Subject: [PATCH] Added has_timeout() and has_idle() calls as suggested by Eric
 Sven Ristad.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1214 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 FL/Fl.H                      |  6 ++++--
 documentation/functions.html | 17 ++++++++++++++++-
 src/Fl.cxx                   | 10 ++++++++--
 src/Fl_add_idle.cxx          | 10 ++++++++--
 4 files changed, 36 insertions(+), 7 deletions(-)

diff --git a/FL/Fl.H b/FL/Fl.H
index daffc5b14..9f0aece50 100644
--- a/FL/Fl.H
+++ b/FL/Fl.H
@@ -1,5 +1,5 @@
 //
-// "$Id: Fl.H,v 1.8.2.6 2000/06/05 21:20:18 mike Exp $"
+// "$Id: Fl.H,v 1.8.2.7 2000/06/16 07:27:57 bill Exp $"
 //
 // Main header file for the Fast Light Tool Kit (FLTK).
 //
@@ -91,12 +91,14 @@ public:
   static FL_EXPORT int run();
   static FL_EXPORT Fl_Widget* readqueue();
   static FL_EXPORT void add_timeout(double t, Fl_Timeout_Handler,void* = 0);
+  static FL_EXPORT int  has_timeout(Fl_Timeout_Handler, void* = 0);
   static FL_EXPORT void remove_timeout(Fl_Timeout_Handler, void* = 0);
   static FL_EXPORT void add_fd(int fd, int when, void (*cb)(int,void*),void* =0);
   static FL_EXPORT void add_fd(int fd, void (*cb)(int, void*), void* = 0);
   static FL_EXPORT void remove_fd(int, int when);
   static FL_EXPORT void remove_fd(int);
   static FL_EXPORT void add_idle(void (*cb)(void*), void* = 0);
+  static FL_EXPORT int  has_idle(void (*cb)(void*), void* = 0);
   static FL_EXPORT void remove_idle(void (*cb)(void*), void* = 0);
   static FL_EXPORT int damage() {return damage_;}
   static FL_EXPORT void redraw();
@@ -211,5 +213,5 @@ public:
 #endif
 
 //
-// End of "$Id: Fl.H,v 1.8.2.6 2000/06/05 21:20:18 mike Exp $".
+// End of "$Id: Fl.H,v 1.8.2.7 2000/06/16 07:27:57 bill Exp $".
 //
diff --git a/documentation/functions.html b/documentation/functions.html
index 4923f3d44..3a156c687 100644
--- a/documentation/functions.html
+++ b/documentation/functions.html
@@ -230,8 +230,10 @@ but <TT>Fl::ready()</TT> does not.</P>
 something that calls <TT>Fl::wait()</TT> or <TT>Fl::check()</TT> (such
 as a message pop-up) you  should first remove the idle callback so that
 it does not recurse. </P>
+
 <H3><A name=add_timeout>static void Fl::add_timeout(float t, void 
 (*cb)(void *),void *v=0)</A></H3>
+
 Add a one-shot timeout callback.  The timeout will happen as soon as 
 possible after <TT>t</TT> seconds after the last time <TT>wait()</TT>
 was called.  The optional <TT>void *</TT> argument is passed to the 
@@ -657,9 +659,22 @@ while (!calculation_done()) {
 </UL>
 <H3><A name=redraw>static void Fl::redraw()</A></H3>
  Redraws all widgets. 
+
+<H3><A name=has_idle>static int Fl::has_idle(void (*cb)(void *), 
+void *= 0)</A></H3>
+
+Returns true if the specified idle callback is currently installed.
+
 <H3><A name=remove_idle>static void Fl::remove_idle(void (*cb)(void *), 
 void *= 0)</A></H3>
- Removes the specified idle callback. 
+
+Removes the specified idle callback, if it is installed.
+
+<H3><A name=has_timeout>static int Fl::has_timeout(void 
+(*cb)(void *), void *= 0)</A></H3>
+
+Returns true if the timeout exists and has not been called yet.
+
 <H3><A name=remove_timeout>static void Fl::remove_timeout(void 
 (*cb)(void *), void *= 0)</A></H3>
  Removes a timeout callback. It is harmless to remove a timeout 
diff --git a/src/Fl.cxx b/src/Fl.cxx
index 73fa187bb..4792db339 100644
--- a/src/Fl.cxx
+++ b/src/Fl.cxx
@@ -1,5 +1,5 @@
 //
-// "$Id: Fl.cxx,v 1.24.2.25 2000/06/10 21:30:59 bill Exp $"
+// "$Id: Fl.cxx,v 1.24.2.26 2000/06/16 07:28:02 bill Exp $"
 //
 // Main event handling code for the Fast Light Tool Kit (FLTK).
 //
@@ -102,6 +102,12 @@ void Fl::add_timeout(double t, Fl_Timeout_Handler cb, void *v) {
   numtimeouts++;
 }
 
+int Fl::has_timeout(void (*cb)(void *), void *v) {
+  for (int i=0; i<numtimeouts; i++)
+    if (timeout[i].cb == cb && timeout[i].arg==v) return 1;
+  return 0;
+}
+
 void Fl::remove_timeout(Fl_Timeout_Handler cb, void *v) {
   int i,j;
   for (i=j=0; i<numtimeouts; i++) {
@@ -721,5 +727,5 @@ void Fl_Window::flush() {
 }
 
 //
-// End of "$Id: Fl.cxx,v 1.24.2.25 2000/06/10 21:30:59 bill Exp $".
+// End of "$Id: Fl.cxx,v 1.24.2.26 2000/06/16 07:28:02 bill Exp $".
 //
diff --git a/src/Fl_add_idle.cxx b/src/Fl_add_idle.cxx
index 227fa65b8..748d03767 100644
--- a/src/Fl_add_idle.cxx
+++ b/src/Fl_add_idle.cxx
@@ -1,5 +1,5 @@
 //
-// "$Id: Fl_add_idle.cxx,v 1.4.2.3 2000/06/05 21:21:00 mike Exp $"
+// "$Id: Fl_add_idle.cxx,v 1.4.2.4 2000/06/16 07:28:03 bill Exp $"
 //
 // Idle routine support for the Fast Light Tool Kit (FLTK).
 //
@@ -63,6 +63,12 @@ void Fl::add_idle(void (*cb)(void*), void* data) {
   }
 }
 
+int Fl::has_idle(void (*cb)(void*), void* data) {
+  for (idle_cb* p = first; p != last; p = p->next)
+    if (p->cb == cb && p->data == data) return 1;
+  return 0;
+}
+
 void Fl::remove_idle(void (*cb)(void*), void* data) {
   idle_cb* p = first;
   if (!p) return;
@@ -84,5 +90,5 @@ void Fl::remove_idle(void (*cb)(void*), void* data) {
 }
 
 //
-// End of "$Id: Fl_add_idle.cxx,v 1.4.2.3 2000/06/05 21:21:00 mike Exp $".
+// End of "$Id: Fl_add_idle.cxx,v 1.4.2.4 2000/06/16 07:28:03 bill Exp $".
 //