]> git.wh0rd.org - tt-rss.git/blobdiff - tt-rss.js
exception handling in some code blocks
[tt-rss.git] / tt-rss.js
index 2bd19f13863da9ce555463b9f724db10314a16f2..94aad44d0677e5ba19a55e1b9a741e9823e11fc4 100644 (file)
--- a/tt-rss.js
+++ b/tt-rss.js
@@ -1,18 +1,15 @@
-/*
-       This program is Copyright (c) 2003-2005 Andrew Dolgov <cthulhoo@gmail.com>              
-       Licensed under GPL v.2 or (at your preference) any later version.
-*/
-
 var xmlhttp = false;
-var xmlhttp_rpc = false;
-var xmlhttp_view = false;
 
 var total_unread = 0;
 var first_run = true;
 
-var active_feed_id = false;
+var display_tags = false;
+
+var global_unread = 0;
 
-var search_query = "";
+var active_title_text = "";
+
+var current_subtitle = "";
 
 /*@cc_on @*/
 /*@if (@_jscript_version >= 5)
@@ -23,76 +20,148 @@ try {
 } catch (e) {
        try {
                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
-               xmlhttp_rpc = new ActiveXObject("Microsoft.XMLHTTP");
-               xmlhttp_view = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (E) {
                xmlhttp = false;
-               xmlhttp_rpc = false;
-               xmlhttp_view = false;
        }
 }
 @end @*/
 
 if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
        xmlhttp = new XMLHttpRequest();
-       xmlhttp_rpc = new XMLHttpRequest();
-       xmlhttp_view = new XMLHttpRequest();
 }
 
-/*
-function feedlist_callback() {
-       var container = document.getElementById('feeds');
-       if (xmlhttp.readyState == 4) {
-               container.innerHTML=xmlhttp.responseText;
+function toggleTags() {
+       display_tags = !display_tags;
 
-               if (first_run) {
-                       scheduleFeedUpdate(false);
-                       if (getCookie("ttrss_vf_actfeed")) {
-                               viewfeed(getCookie("ttrss_vf_actfeed"), 0, "");
-                       }
-                       first_run = false;
-               } else {
-                       notify("");
-               } 
+       var p = document.getElementById("dispSwitchPrompt");
+
+       if (display_tags) {
+               p.innerHTML = "display feeds";
+       } else {
+               p.innerHTML = "display tags";
+       }
+       
+       updateFeedList();
+}
+
+function dlg_frefresh_callback() {
+       if (xmlhttp.readyState == 4) {
+               updateFeedList(false, false);
+               closeDlg();
        } 
 }
-*/
 
+function dialog_refresh_callback() {
+       if (xmlhttp.readyState == 4) {
+               var dlg = document.getElementById("userDlg");
 
-function refetch_callback() {
+               dlg.innerHTML = xmlhttp.responseText;
+               dlg.style.display = "block";
+       } 
+}
 
-       if (xmlhttp_rpc.readyState == 4) {
-               notify("All feeds updated");
+function refetch_callback() {
+       if (xmlhttp.readyState == 4) {
+               try {
 
-               active_feed_id = frames["feeds-frame"].document.getElementById("ACTFEEDID").innerHTML;
+                       if (!xmlhttp.responseXML) {
+                               notify("refetch_callback: backend did not return valid XML");
+                               return;
+                       }
                
-               document.title = "Tiny Tiny RSS";
+                       var reply = xmlhttp.responseXML.firstChild;
+       
+                       if (!reply) {
+                               notify("refetch_callback: backend did not return expected XML object");
+                               return;
+                       } 
+       
+                       var error_code = reply.getAttribute("error-code");
                
-               updateFeedList();
+                       if (error_code && error_code != 0) {
+                               return fatalError(error_code);
+                       }
+       
+                       var f_document = window.frames["feeds-frame"].document;
+       
+                       for (var l = 0; l < reply.childNodes.length; l++) {
+                               var id = reply.childNodes[l].getAttribute("id");
+                               var ctr = reply.childNodes[l].getAttribute("counter");
+       
+                               var feedctr = f_document.getElementById("FEEDCTR-" + id);
+                               var feedu = f_document.getElementById("FEEDU-" + id);
+                               var feedr = f_document.getElementById("FEEDR-" + id);
+       
+       /*                      TODO figure out how to update this from viewfeed.js->view()
+                               disabled for now...
+       
+                               if (id == "global-unread") {
+                                       global_unread = ctr;
+                               } */
+       
+                               if (feedctr && feedu && feedr) {
+       
+                                       feedu.innerHTML = ctr;
                
-       } 
+                                       if (ctr > 0) {
+                                               feedctr.className = "odd";
+                                               if (!feedr.className.match("Unread")) {
+                                                       feedr.className = feedr.className + "Unread";
+                                               }
+                                       } else {
+                                               feedctr.className = "invisible";
+                                               feedr.className = feedr.className.replace("Unread", "");
+                                       }
+                               }
+                       }  
+       
+                       updateTitle("");
+                       notify("All feeds updated.");
+               } catch (e) {
+                       exception_error("refetch_callback", e);
+               }
+       }
 }
 
+function backend_sanity_check_callback() {
 
-function updateFeed(feed_id) {
-
-       var query_str = "backend.php?op=rpc&subop=updateFeed&feed=" + feed_id;
+       if (xmlhttp.readyState == 4) {
 
-       if (xmlhttp_ready(xmlhttp_rpc)) {
-               xmlhttp_rpc.open("GET", query_str, true);
-               xmlhttp_rpc.onreadystatechange=feed_update_callback;
-               xmlhttp_rpc.send(null);
-       } else {
-               printLockingError();
-       }   
+               try {
+               
+                       if (!xmlhttp.responseXML) {
+                               fatalError(3);
+                               return;
+                       }
+       
+                       var reply = xmlhttp.responseXML.firstChild;
+       
+                       if (!reply) {
+                               fatalError(3);
+                               return;
+                       }
+       
+                       var error_code = reply.getAttribute("error-code");
+               
+                       if (error_code && error_code != 0) {
+                               return fatalError(error_code);
+                       }
+       
+                       init_second_stage();
 
+               } catch (e) {
+                       exception_error("backend_sanity_check_callback", e);
+               }
+       } 
 }
 
 function scheduleFeedUpdate(force) {
 
        notify("Updating feeds in background...");
 
-       document.title = "Tiny Tiny RSS - Updating...";
+//     document.title = "Tiny Tiny RSS - Updating...";
+
+       updateTitle("Updating");
 
        var query_str = "backend.php?op=rpc&subop=";
 
@@ -102,10 +171,20 @@ function scheduleFeedUpdate(force) {
                query_str = query_str + "updateAllFeeds";
        }
 
-       if (xmlhttp_ready(xmlhttp_rpc)) {
-               xmlhttp_rpc.open("GET", query_str, true);
-               xmlhttp_rpc.onreadystatechange=refetch_callback;
-               xmlhttp_rpc.send(null);
+       var omode;
+
+       if (display_tags) {
+               omode = "t";
+       } else {
+               omode = "fl";
+       }
+
+       query_str = query_str + "&omode=" + omode;
+
+       if (xmlhttp_ready(xmlhttp)) {
+               xmlhttp.open("GET", query_str, true);
+               xmlhttp.onreadystatechange=refetch_callback;
+               xmlhttp.send(null);
        } else {
                printLockingError();
        }   
@@ -119,8 +198,12 @@ function updateFeedList(silent, fetch) {
 
        var query_str = "backend.php?op=feeds";
 
-       if (active_feed_id) {
-               query_str = query_str + "&actid=" + active_feed_id;
+       if (display_tags) {
+               query_str = query_str + "&tags=1";
+       }
+
+       if (getActiveFeedId()) {
+               query_str = query_str + "&actid=" + getActiveFeedId();
        }
 
        if (fetch) query_str = query_str + "&fetch=yes";
@@ -140,192 +223,323 @@ function catchupAllFeeds() {
 
        feeds_frame.src = query_str;
 
+       global_unread = 0;
+       updateTitle("");
+
 }
 
 function viewCurrentFeed(skip, subop) {
 
-       active_feed_id = frames["feeds-frame"].document.getElementById("ACTFEEDID").innerHTML;
-
-       if (active_feed_id) {
-               viewfeed(active_feed_id, skip, subop);
+       if (getActiveFeedId()) {
+               viewfeed(getActiveFeedId(), skip, subop);
+       } else {
+               disableContainerChildren("headlinesToolbar", false, document);
+               viewfeed(-1, skip, subop); // FIXME
        }
 }
 
 function viewfeed(feed, skip, subop) {
+       var f = window.frames["feeds-frame"];
+       f.viewfeed(feed, skip, subop);
+}
 
-       notify("Loading headlines...");
+function timeout() {
+       scheduleFeedUpdate(false);
+       setTimeout("timeout()", 1800*1000);
+}
 
-       enableHotkeys();
+function resetSearch() {
+       var searchbox = document.getElementById("searchbox")
 
-       var searchbox = document.getElementById("searchbox");
+       if (searchbox.value != "" && getActiveFeedId()) {       
+               searchbox.value = "";
+               viewfeed(getActiveFeedId(), 0, "");
+       }
+}
 
-       if (searchbox) {
-               search_query = searchbox.value;
-       } else {
-               search_query = "";
-       } 
+function search() {
+       viewCurrentFeed(0, "");
+}
 
-       var viewbox = document.getElementById("viewbox");
+function localPiggieFunction(enable) {
+       if (enable) {
+               var query_str = "backend.php?op=feeds&subop=piggie";
 
-       var view_mode;
+               if (xmlhttp_ready(xmlhttp)) {
 
-       if (viewbox) {
-               view_mode = viewbox.value;
-       } else {
-               view_mode = "All Posts";
+                       xmlhttp.open("GET", query_str, true);
+                       xmlhttp.onreadystatechange=feedlist_callback;
+                       xmlhttp.send(null);
+               }
        }
+}
 
-       setCookie("ttrss_vf_vmode", view_mode);
+function localHotkeyHandler(keycode) {
 
-       var limitbox = document.getElementById("limitbox");
+/*     if (keycode == 78) {
+               return moveToPost('next');
+       }
 
-       var limit;
+       if (keycode == 80) {
+               return moveToPost('prev');
+       } */
 
-       if (limitbox) {
-               limit = limitbox.value;
-               setCookie("ttrss_vf_limit", limit);
-       } else {
-               limit = "All";
+       if (keycode == 82) { // r
+               return scheduleFeedUpdate(true);
        }
 
-       active_feed_id = feed;
+       if (keycode == 85) { // u
+               if (getActiveFeedId()) {
+                       return viewfeed(getActiveFeedId(), 0, "ForceUpdate");
+               }
+       }
 
-       var f_doc = frames["feeds-frame"].document;
+       if (keycode == 65) { // a
+               return toggleDispRead();
+       }
 
-       f_doc.getElementById("ACTFEEDID").innerHTML = feed;
+//     notify("KC: " + keycode);
 
-       setCookie("ttrss_vf_actfeed", feed);
+}
 
-       if (subop == "MarkAllRead") {
+function updateTitle(s) {
+       var tmp = "Tiny Tiny RSS";
 
-               var feedr = f_doc.getElementById("FEEDR-" + feed);
-               var feedt = f_doc.getElementById("FEEDT-" + feed);
-               var feedu = f_doc.getElementById("FEEDU-" + feed);
-               
-               feedu.innerHTML = "0";
+       if (s && s.length > 0) {
+               current_subtitle = s;
+       }
 
-               if (feedr.className.match("Unread")) {
-                       feedr.className = feedr.className.replace("Unread", "");
-               }
+       if (global_unread > 0) {
+               tmp = tmp + " (" + global_unread + ")";
        }
 
-       var query = "backend.php?op=viewfeed&feed=" + param_escape(feed) +
-               "&skip=" + param_escape(skip) + "&subop=" + param_escape(subop) +
-               "&view=" + param_escape(view_mode) + "&limit=" + limit;
+       if (s) {
+               tmp = tmp + " - " + current_subtitle;
+       }
 
-       if (search_query != "") {
-               query = query + "&search=" + param_escape(search_query);
+       if (active_title_text.length > 0) {
+               tmp = tmp + " > " + active_title_text;
        }
-       
-       var headlines_frame = parent.frames["headlines-frame"];
 
-       headlines_frame.location.href = query + "&addheader=true";
+       document.title = tmp;
+}
 
-       cleanSelected("feedsList");
-       var feedr = document.getElementById("FEEDR-" + feed);
-       if (feedr) {
-               feedr.className = feedr.className + "Selected";
-       }
-       
-       disableContainerChildren("headlinesToolbar", false, doc);
+function genericSanityCheck() {
 
-//     notify("");
+       if (!xmlhttp) fatalError(1);
 
+       setCookie("ttrss_vf_test", "TEST");
+       
+       if (getCookie("ttrss_vf_test") != "TEST") {
+               fatalError(2);
+       }
+
+       return true;
 }
 
+function init() {
 
-function timeout() {
-       scheduleFeedUpdate(true);
-       setTimeout("timeout()", 1800*1000);
-}
+       try {
 
-function resetSearch() {
-       var searchbox = document.getElementById("searchbox")
+               disableContainerChildren("headlinesToolbar", true);
 
-       if (searchbox.value != "" && active_feed_id) {  
-               searchbox.value = "";
-               viewfeed(active_feed_id, 0, "");
+               if (!genericSanityCheck()) 
+                       return;
+
+               xmlhttp.open("GET", "backend.php?op=rpc&subop=sanityCheck", true);
+               xmlhttp.onreadystatechange=backend_sanity_check_callback;
+               xmlhttp.send(null);
+
+       } catch (e) {
+               exception_error("init", e);
        }
 }
 
-function search() {
-       if (active_feed_id) {
-               viewfeed(active_feed_id, 0, "");
-       } else {
-               notify("Please select some feed first.");
+function init_second_stage() {
+
+       try {
+
+               setCookie("ttrss_vf_actfeed", "");
+       
+               updateFeedList(false, false);
+               document.onkeydown = hotkey_handler;
+       
+               var content = document.getElementById("content");
+       
+               if (getCookie("ttrss_vf_vmode")) {
+                       var viewbox = document.getElementById("viewbox");
+                       viewbox.value = getCookie("ttrss_vf_vmode");
+               }
+       
+               if (getCookie("ttrss_vf_limit")) {
+                       var limitbox = document.getElementById("limitbox");
+                       limitbox.value = getCookie("ttrss_vf_limit");
+               }
+       
+       //      if (getCookie("ttrss_vf_actfeed")) {
+       //              viewfeed(getCookie("ttrss_vf_actfeed"), 0, '');
+       //      }
+       
+       //      setTimeout("timeout()", 2*1000);
+       //      scheduleFeedUpdate(true);
+       
+               var splash = document.getElementById("splash");
+       
+               if (splash) {
+                       splash.style.display = "none";
+               }
+       } catch (e) {
+               exception_error("init_second_stage", e);
        }
 }
 
-function localPiggieFunction(enable) {
-       if (enable) {
-               var query_str = "backend.php?op=feeds&subop=piggie";
+function quickMenuGo() {
 
-               if (xmlhttp_ready(xmlhttp)) {
+       var chooser = document.getElementById("quickMenuChooser");
+       var opid = chooser[chooser.selectedIndex].id;
 
-                       xmlhttp.open("GET", query_str, true);
-                       xmlhttp.onreadystatechange=feedlist_callback;
-                       xmlhttp.send(null);
+       if (opid == "qmcPrefs") {
+               gotoPreferences();
+       }
+
+       if (opid == "qmcAdvSearch") {
+               displayDlg("search");
+               return;
+       }
+
+       if (opid == "qmcAddFeed") {
+               displayDlg("quickAddFeed");
+               return;
+       }
+
+       if (opid == "qmcRemoveFeed") {
+               var actid = getActiveFeedId();
+
+               if (!actid) {
+                       notify("Please select some feed first.");
+                       return;
                }
+       
+               displayDlg("quickDelFeed", actid);
+               return;
        }
-}
 
-function localHotkeyHandler(keycode) {
+       if (opid == "qmcUpdateFeeds") {
+               scheduleFeedUpdate(true);
+               return;
+       }
 
-/*     if (keycode == 78) {
-               return moveToPost('next');
+       if (opid == "qmcCatchupAll") {
+               catchupAllFeeds();
+               return;
        }
 
-       if (keycode == 80) {
-               return moveToPost('prev');
-       } */
+       if (opid == "qmcShowOnlyUnread") {
+               toggleDispRead();
+               return;
+       }
 
-       if (keycode == 82) {
-               return scheduleFeedUpdate(true);
+}
+
+function qafAdd() {
+
+       if (!xmlhttp_ready(xmlhttp)) {
+               printLockingError();
+               return
        }
 
-       if (keycode == 85) {
-               return viewfeed(active_feed_id, active_offset, "ForceUpdate");
+       var link = document.getElementById("qafInput");
+
+       if (link.value.length == 0) {
+               notify("Missing feed URL.");
+       } else {
+               notify("Adding feed...");
+               
+               var feeds_doc = window.frames["feeds-frame"].document;
+
+               feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
+
+               xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=add&link=" +
+                       param_escape(link.value), true);
+               xmlhttp.onreadystatechange=dlg_frefresh_callback;
+               xmlhttp.send(null);
+
+               link.value = "";
+
        }
+}
 
-//     notify("KC: " + keycode);
+function displayDlg(id, param) {
+
+       notify("");
+
+       xmlhttp.open("GET", "backend.php?op=dlg&id=" +
+               param_escape(id) + "&param=" + param_escape(param), true);
+       xmlhttp.onreadystatechange=dialog_refresh_callback;
+       xmlhttp.send(null);
 
 }
 
-function init() {
+function closeDlg() {
+       var dlg = document.getElementById("userDlg");
+       dlg.style.display = "none";
+}
+
+function qfdDelete(feed_id) {
+
+       notify("Removing feed...");
+
+       var feeds_doc = window.frames["feeds-frame"].document;
+       feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
+
+       xmlhttp.open("GET", "backend.php?op=pref-feeds&subop=remove&ids=" + feed_id);
+       xmlhttp.onreadystatechange=dlg_frefresh_callback;
+       xmlhttp.send(null);
+}
+
 
-       disableContainerChildren("headlinesToolbar", true);
+function allFeedsMenuGo() {
+       var chooser = document.getElementById("allFeedsChooser");
 
-       // IE kludge
+       var opname = chooser[chooser.selectedIndex].text;
 
-       if (xmlhttp && !xmlhttp_rpc) {
-               xmlhttp_rpc = xmlhttp;
-               xmlhttp_view = xmlhttp;
+       if (opname == "Update") {
+               scheduleFeedUpdate(true);
+               return;
        }
 
-       if (!xmlhttp || !xmlhttp_rpc || !xmlhttp_view) {
-               document.getElementById("headlines").innerHTML = 
-                       "<b>Fatal error:</b> This program needs XmlHttpRequest " + 
-                       "to function properly. Your browser doesn't seem to support it.";
+       if (opname == "Mark as read") {
+               catchupAllFeeds();
                return;
        }
 
-       updateFeedList(false, false);
-       document.onkeydown = hotkey_handler;
-       setTimeout("timeout()", 1800*1000);
+       if (opname == "Show only unread") {
+               toggleDispRead();
+               return;
+       }
+
+}
 
-       scheduleFeedUpdate(true);
+function updateFeedTitle(t) {
+       active_title_text = t;
+       updateTitle();
+}
 
-       var content = document.getElementById("content");
+function toggleDispRead() {
+       var hide_read_feeds = (getCookie("ttrss_vf_hreadf") == 1);
 
-       if (getCookie("ttrss_vf_vmode")) {
-               var viewbox = document.getElementById("viewbox");
-               viewbox.value = getCookie("ttrss_vf_vmode");
-       }
+       hide_read_feeds = !hide_read_feeds;
+
+       var feeds_doc = window.frames["feeds-frame"].document;
 
-       if (getCookie("ttrss_vf_limit")) {
-               var limitbox = document.getElementById("limitbox");
-               limitbox.value = getCookie("ttrss_vf_limit");
+       hideOrShowFeeds(feeds_doc, hide_read_feeds);
+
+       if (hide_read_feeds) {
+               setCookie("ttrss_vf_hreadf", 1);
+       } else {
+               setCookie("ttrss_vf_hreadf", 0);
        }
+
 }