From 1c807ff084a8422072c91952d7a1829868c33438 Mon Sep 17 00:00:00 2001
From: Art Cancro <ajc@citadel.org>
Date: Fri, 20 Feb 2009 21:47:01 +0000
Subject: [PATCH] * 'Check Attendee Availability' button is now enabled or
 disabled depending upon whether the attendees list has a nonzero length.

---
 webcit/event.c         | 12 +++++++-----
 webcit/static/wclib.js | 17 +++++++++++++++++
 2 files changed, 24 insertions(+), 5 deletions(-)

diff --git a/webcit/event.c b/webcit/event.c
index f8fb1611f..25ad1514a 100644
--- a/webcit/event.c
+++ b/webcit/event.c
@@ -133,7 +133,7 @@ void display_edit_individual_event(icalcomponent *supplied_vevent, long msgnum,
 	wprintf("SEQUENCE == %d<br />\n", sequence);
 	*************************************************************/
 
-	wprintf("<FORM NAME=\"EventForm\" METHOD=\"POST\" action=\"save_event\">\n");
+	wprintf("<form name=\"EventForm\" method=\"POST\" action=\"save_event\">\n");
 	wprintf("<input type=\"hidden\" name=\"nonce\" value=\"%d\">\n", WC->nonce);
 
 	wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
@@ -388,6 +388,8 @@ void display_edit_individual_event(icalcomponent *supplied_vevent, long msgnum,
 
 	wprintf("</TD><TD>"
 		"<TEXTAREA %s NAME=\"attendees\" id=\"attendees_box\" wrap=soft "
+		"onchange=\"EnableOrDisableCheckButton();\" "
+		"onKeyPress=\"EnableOrDisableCheckButton();\" "
 		"ROWS=10 COLS=72 WIDTH=72>\n",
 		(organizer_is_me ? "" : "DISABLED ")
 	);
@@ -708,8 +710,7 @@ void display_edit_individual_event(icalcomponent *supplied_vevent, long msgnum,
 		"&nbsp;&nbsp;"
 		"<INPUT TYPE=\"submit\" NAME=\"delete_button\" VALUE=\"%s\">\n"
 		"&nbsp;&nbsp;"
-		"<INPUT TYPE=\"submit\" NAME=\"check_button\" "
-				"VALUE=\"%s\">\n"
+		"<INPUT TYPE=\"submit\" id=\"check_button\" NAME=\"check_button\" VALUE=\"%s\">\n"
 		"&nbsp;&nbsp;"
 		"<INPUT TYPE=\"submit\" NAME=\"cancel_button\" VALUE=\"%s\">\n"
 		"</CENTER>\n",
@@ -724,8 +725,9 @@ void display_edit_individual_event(icalcomponent *supplied_vevent, long msgnum,
 	wprintf("</div>\n");			/* end 'fix_scrollbar_bug' div */
 
 	StrBufAppendPrintf(WC->trailing_javascript,
-		"eventEditAllDay();	\n"
-		"RecurrenceShowHide();	\n"
+		"eventEditAllDay();		\n"
+		"RecurrenceShowHide();		\n"
+		"EnableOrDisableCheckButton();	\n"
 	);
 	address_book_popup();
 	wDumpContent(1);
diff --git a/webcit/static/wclib.js b/webcit/static/wclib.js
index 01febd884..be0728432 100644
--- a/webcit/static/wclib.js
+++ b/webcit/static/wclib.js
@@ -783,6 +783,23 @@ function RecurrenceShowHide() {
 	}
 
 }
+
+
+// Enable or disable the 'check attendee availability' button depending on whether
+// the attendees list is empty
+function EnableOrDisableCheckButton()
+{
+	if ($('attendees_box').value.length == 0) {
+		$('check_button').disabled = true;
+	}
+	else {
+		$('check_button').disabled = false;
+	}
+}
+
+
+
+
 function launchChat(event) {
 window.open('chat', 'ctdl_chat_window', 'toolbar=no,location=no,directories=no,copyhistory=no,status=no,scrollbars=yes,resizable=yes');
 }
-- 
2.30.2