/*
- * $Id: $
+ * $Id$
*
* BBS View renderer module for WebCit
*
- * Copyright (c) 1996-2009 by the citadel.org team
+ * Note: we briefly had a dynamic UI for this. I thought it was cool, but
+ * it was not received well by the user community. If you want to play
+ * with it, go get r8256 of bbsview_renderer.c and have fun.
+ *
+ * Copyright (c) 1996-2010 by the citadel.org team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#define RANGE 5
+
#include "webcit.h"
#include "webserver.h"
#include "groupdav.h"
/*
* Data which gets passed around between the various functions in this module
+ *
+ * We do this weird "pivot point" thing instead of starting the page numbers at 0 or 1 so that
+ * the border between old and new messages always falls on a page boundary. We'll renumber them
+ * to page numbers starting at 1 when presenting them to the user.
*/
struct bbsview {
long *msgs; /* Array of msgnums for messages we are displaying */
int num_msgs; /* Number of msgnums stored in 'msgs' */
int alloc_msgs; /* Currently allocated size of array */
+ long pivot_msgnum; /* Page numbers are relative to this message number */
+ int requested_page; /* Which page number did the user request? */
};
+/*
+ * Attempt to determine the closest thing to the "last seen message number" using the
+ * results of the GTSN command
+ */
+long bbsview_get_last_seen(void)
+{
+ char buf[SIZ] = "0";
+
+ serv_puts("GTSN");
+ serv_getln(buf, sizeof buf);
+ if (buf[0] == '2') {
+
+ char *comma_pos = strchr(buf, ','); /* kill first comma and everything to its right */
+ if (comma_pos) {
+ *comma_pos = 0;
+ }
+
+ char *colon_pos = strchr(buf, ':'); /* kill first colon and everything to its left */
+ if (colon_pos) {
+ strcpy(buf, ++colon_pos);
+ }
+ }
+
+ return(atol(buf));
+}
+
+
+
/*
* Entry point for message read operations.
*/
memset(BBS, 0, sizeof(struct bbsview));
*ViewSpecific = BBS;
- Stat->defaultsortorder = 1;
- Stat->startmsg = -1;
- Stat->sortit = 1;
-
- rlid[oper].cmd(cmd, len); /* this performs the server call to fetch the msg list */
-
- if (havebstr("maxmsgs")) {
- Stat->maxmsgs = ibstr("maxmsgs");
+ Stat->startmsg = -1; /* not used here */
+ Stat->sortit = 1; /* not used here */
+ Stat->num_displayed = DEFAULT_MAXMSGS; /* not used here */
+ BBS->requested_page = 0;
+
+ if (havebstr("page")) {
+ BBS->requested_page = ibstr("page");
}
- if (Stat->maxmsgs == 0) Stat->maxmsgs = DEFAULT_MAXMSGS;
- if (havebstr("startmsg")) {
- Stat->startmsg = lbstr("startmsg");
+ if (havebstr("pivot")) {
+ BBS->pivot_msgnum = ibstr("pivot");
}
- if (lbstr("SortOrder") == 2) {
- Stat->reverse = 1;
- Stat->num_displayed = -DEFAULT_MAXMSGS;
+ else if (oper == 2) { /* 2 == "read all" (otherwise we pivot at the beginning of new msgs) */
+ BBS->pivot_msgnum = 0; /* start from the top */
}
else {
- Stat->reverse = 0;
- Stat->num_displayed = DEFAULT_MAXMSGS;
+ BBS->pivot_msgnum = bbsview_get_last_seen();
}
- return 200;
-}
-
-
-/*
- * begin_ajax_response() was moved from bbsview_LoadMsgFromServer() to here ...
- */
-int bbsview_PrintViewHeader(SharedMessageStatus *Stat, void **ViewSpecific)
-{
- if (WC->is_ajax) {
- begin_ajax_response(); /* for non-ajax, headers are output in messages.c */
+ if (havebstr("maxmsgs")) {
+ Stat->maxmsgs = ibstr("maxmsgs");
}
-
+ if (Stat->maxmsgs == 0) Stat->maxmsgs = DEFAULT_MAXMSGS;
+
+ /* perform a "read all" call to fetch the message list -- we'll cut it down later */
+ rlid[2].cmd(cmd, len);
+
return 200;
}
struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
if (BBS->alloc_msgs == 0) {
- BBS->alloc_msgs = Stat->maxmsgs;
+ BBS->alloc_msgs = 1000;
BBS->msgs = malloc(BBS->alloc_msgs * sizeof(long));
}
- /* Theoretically this never happens because the initial allocation == maxmsgs */
+ /* Check our buffer size */
if (BBS->num_msgs >= BBS->alloc_msgs) {
BBS->alloc_msgs *= 2;
BBS->msgs = realloc(BBS->msgs, (BBS->alloc_msgs * sizeof(long)));
return 200;
}
-int bbsview_sortfunc_reverse(const void *s1, const void *s2) {
- long l1;
- long l2;
-
- l1 = *(long *)(s1);
- l2 = *(long *)(s2);
-
- if (l1 > l2) return(-1);
- if (l1 < l2) return(+1);
- return(0);
-}
-
-int bbsview_sortfunc_forward(const void *s1, const void *s2) {
+int bbsview_sortfunc(const void *s1, const void *s2) {
long l1;
long l2;
{
struct bbsview *BBS = (struct bbsview *) *ViewSpecific;
int i;
+ int seq;
const StrBuf *Mime;
- char olderdiv[64];
- char newerdiv[64];
- int doing_older_messages = 0;
- int doing_newer_messages = 0;
-
- snprintf(olderdiv, sizeof olderdiv, "olderdiv%08lx%08x", time(NULL), rand());
- snprintf(newerdiv, sizeof newerdiv, "newerdiv%08lx%08x", time(NULL), rand());
-
- /* If this is the initial page load (and not an update), supply the required JavaScript code */
- if (!WC->is_ajax) {
- StrBufAppendPrintf(WC->trailing_javascript,
- " function moremsgs(target_div, gt_or_lt, gt_or_lt_value, maxmsgs, sortorder) { \n"
- " $(target_div).innerHTML = '<div class=\"moreprompt\">%s ... <img src=\"static/throbber.gif\"></div>'; \n"
- " p = gt_or_lt + '=' + gt_or_lt_value + '&maxmsgs=' + maxmsgs \n"
- " + '&is_summary=0&SortOrder=' + sortorder + '&is_ajax=1' \n"
- " + '>_or_lt=' + gt_or_lt \n"
- " + '&r=' + CtdlRandomString(); \n"
- " new Ajax.Updater(target_div, 'read' + gt_or_lt, \n"
- " { method: 'get', parameters: p, evalScripts: true } ); \n"
- " } \n"
- "",
- _("Loading")
- );
- }
-
-
- /* Determine whether we are in the middle of a 'click for older messages' or 'click for
- * newer messages' operation. If neither, then we are in the initial page load.
- */
- if (!strcasecmp(bstr("gt_or_lt"), "lt")) {
- doing_older_messages = 1;
- doing_newer_messages = 0;
- }
- else if (!strcasecmp(bstr("gt_or_lt"), "gt")) {
- doing_older_messages = 0;
- doing_newer_messages = 1;
- }
- else {
- doing_older_messages = 0;
- doing_newer_messages = 0;
- }
-
+ int pivot_index = 0;
+ int page_offset = 0;
+ int start_index = 0;
+ int end_index = 0;
/* Cut the message list down to the requested size */
if (Stat->nummsgs > 0) {
lprintf(9, "sorting %d messages\n", BBS->num_msgs);
- qsort(BBS->msgs, (size_t)(BBS->num_msgs), sizeof(long), (Stat->reverse ? bbsview_sortfunc_reverse : bbsview_sortfunc_forward));
+ qsort(BBS->msgs, (size_t)(BBS->num_msgs), sizeof(long), bbsview_sortfunc);
/* Cut it down to 20 messages (or whatever value Stat->maxmsgs is set to) */
if (BBS->num_msgs > Stat->maxmsgs) {
- if (doing_older_messages) {
- /* LT ... cut it down to the LAST 20 messages received */
- memcpy(&BBS->msgs[0], &BBS->msgs[BBS->num_msgs - Stat->maxmsgs],
- (Stat->maxmsgs * sizeof(long))
- );
- BBS->num_msgs = Stat->maxmsgs;
- }
- else {
- /* GT ... cut it down to the FIRST 20 messages received */
- BBS->num_msgs = Stat->maxmsgs;
+ /* Locate the pivot point in our message index */
+ for (i=0; i<(BBS->num_msgs); ++i) {
+ if (BBS->msgs[i] <= BBS->pivot_msgnum) {
+ pivot_index = i;
+ }
}
- }
- }
+ page_offset = (pivot_index / Stat->maxmsgs) + 2;
- /* Supply the link to prepend the previous 20 messages */
-
- if (doing_newer_messages == 0) {
- wc_printf("<div id=\"%s\">", olderdiv);
- /* if (Stat->nummsgs > 0) { */
- if (Stat->nummsgs > 0) {
- wc_printf("<a href=\"javascript:moremsgs('%s', 'lt', %ld, %ld, %d );\">",
- olderdiv,
- BBS->msgs[0],
- Stat->maxmsgs,
- (Stat->reverse ? 2 : 1)
- );
-
- wc_printf("<div class=\"moreprompt\">"
- "↑ ↑ ↑ %s ↑ ↑ ↑"
- "</div>", _("older messages")
- );
- wc_printf("</a>");
}
- wc_printf("</div>");
}
+ start_index = pivot_index + (BBS->requested_page * Stat->maxmsgs) ;
+ if (start_index < 0) start_index = 0;
+ end_index = start_index + Stat->maxmsgs - 1;
+ for (seq = 0; seq < 3; ++seq) { /* cheap and sleazy way of rendering the funbar twice */
- /* Handle the empty message set gracefully... */
- if (Stat->nummsgs == 0) {
- if (!WC->is_ajax) {
- wc_printf("<div class=\"nomsgs\"><br><em>");
- wc_printf(_("No messages here."));
- wc_printf("</em><br></div>\n");
- }
- }
+ if (seq == 1) {
+ /* display the selected range of messages */
- /* Non-empty message set... */
- else {
- /* Render the messages */
-
- for (i=0; i<BBS->num_msgs; ++i) {
- read_message(WC->WBuf, HKEY("view_message"), BBS->msgs[i], NULL, &Mime);
- }
-
- }
-
-
- /* Supply the link to append the next 20 messages */
-
- if (doing_older_messages == 0) {
- wc_printf("<div id=\"%s\">", newerdiv);
- /* if (Stat->nummsgs > 0) { */
- if (Stat->nummsgs >= Stat->maxmsgs) {
- wc_printf("<a href=\"javascript:moremsgs('%s', 'gt', %ld, %ld, %d );\">",
- newerdiv,
- BBS->msgs[BBS->num_msgs-1],
- Stat->maxmsgs,
- (Stat->reverse ? 2 : 1)
- );
-
- wc_printf("<div class=\"moreprompt\">"
- "↓ ↓ ↓ %s ↓ ↓ ↓"
- "</div>", _("newer messages")
- );
- wc_printf("</a>");
- }
- else {
- long gt = 0; /* if new messages appear later, where will they begin? */
if (Stat->nummsgs > 0) {
- gt = BBS->msgs[BBS->num_msgs-1];
+ wc_printf("<font size=\"-1\">\n");
+ for (i=start_index; (i<=end_index && i<=BBS->num_msgs); ++i) {
+ if (BBS->msgs[i] > 0L) {
+ read_message(WC->WBuf, HKEY("view_message"), BBS->msgs[i], NULL, &Mime);
+ }
+ }
+ wc_printf("</font><br>\n");
}
- else {
- gt = atol(bstr("gt"));
- }
- wc_printf("<a href=\"javascript:moremsgs('%s', 'gt', %ld, %ld, %d );\">",
- newerdiv,
- gt,
- Stat->maxmsgs,
- (Stat->reverse ? 2 : 1)
- );
- wc_printf("<div class=\"moreprompt\">");
- wc_printf("%s", _("no more messages"));
- wc_printf("</div>");
- wc_printf("</a>");
}
- wc_printf("</div>");
- }
+ else {
+ /* Display the range selecto-bar */
- /* Leave a little padding at the bottom, but only for the initial page load -- don't keep
- * adding it every time we extend the visible message set.
- */
- if (!WC->is_ajax) {
- wc_printf("<br><br><br><br>");
+ wc_printf("<div class=\"moreprompt\">");
+ wc_printf(_("Go to page: "));
+
+ int first = 1;
+ int last = (BBS->num_msgs / Stat->maxmsgs) + 2 ;
+
+ for (i=1; i<=last; ++i) {
+
+ if (
+ (i == first)
+ || (i == last)
+ || ((i - page_offset) == BBS->requested_page)
+ || (
+ ((BBS->requested_page - (i - page_offset)) < RANGE)
+ && ((BBS->requested_page - (i - page_offset)) > (0 - RANGE))
+ )
+ ) {
+
+ if (
+ (i == last)
+ && (last - (BBS->requested_page + page_offset) > RANGE)
+ ) {
+ wc_printf("... ");
+ }
+ if ((i - page_offset) == BBS->requested_page) {
+ wc_printf("[");
+ }
+ else {
+ wc_printf("<a href=\"readfwd?pivot=%ld?page=%d\">",
+ BBS->pivot_msgnum,
+ i - page_offset
+ );
+ wc_printf("<span class=\"moreprompt_link\">");
+ }
+ if (
+ (i == first)
+ && ((BBS->requested_page + page_offset) > (RANGE + 1))
+ ) {
+ wc_printf(_("First"));
+ }
+ else if (
+ (i == last)
+ && (last - (BBS->requested_page + page_offset) > RANGE)
+ ) {
+ wc_printf(_("Last"));
+ }
+ else {
+ wc_printf("%d", i);
+ }
+ if ((i - page_offset) == BBS->requested_page) {
+ wc_printf("]");
+ }
+ else {
+ wc_printf("</span>");
+ wc_printf("</a>");
+ }
+ if (
+ (i == first)
+ && ((BBS->requested_page + page_offset) > (RANGE + 1))
+ ) {
+ wc_printf(" ...");
+ }
+ if (i != last) {
+ wc_printf(" ");
+ }
+ }
+ }
+ wc_printf("</div>\n");
+ }
}
return(0);
}
free(BBS);
- if (WC->is_ajax) {
- end_ajax_response();
- WC->is_ajax = 0;
- }
- else {
- wDumpContent(1);
- }
+ wDumpContent(1);
return 0;
}
+
void
InitModule_BBSVIEWRENDERERS
(void)
RegisterReadLoopHandlerset(
VIEW_BBS,
bbsview_GetParamsGetServerCall,
- bbsview_PrintViewHeader,
+ NULL,
+ NULL,
bbsview_LoadMsgFromServer,
bbsview_RenderView_or_Tail,
- bbsview_Cleanup);
+ bbsview_Cleanup
+ );
}
projects / citadel.git / blobdiff