]> git.wh0rd.org - tt-rss.git/blobdiff - tt-rss.js
dijit.tree feedlist improvements
[tt-rss.git] / tt-rss.js
index a3b18449647dd67b2a2ecfdd55cc4e489da871a3..d5905346d4098cb7565f38a7f34eab8beee92803 100644 (file)
--- a/tt-rss.js
+++ b/tt-rss.js
@@ -1,23 +1,27 @@
-
 var total_unread = 0;
-var first_run = true;
 var display_tags = false;
 var global_unread = -1;
-var current_subtitle = "";
-var daemon_enabled = false;
-//var _qfd_deleted_feed = 0;
 var firsttime_update = true;
 var _active_feed_id = 0;
 var _active_feed_is_cat = false;
 var number_of_feeds = 0;
-var _hfd_scrolltop = 0;
 var hotkey_prefix = false;
 var hotkey_prefix_pressed = false;
-var init_params = new Object();
-var ver_offset = 0;
-var hor_offset = 0;
-var feeds_sort_by_unread = false;
-var feedlist_sortable_enabled = false;
+var init_params = {};
+var _force_scheduled_update = false;
+var last_scheduled_update = false;
+var treeModel;
+
+var _rpc_seq = 0;
+
+function next_seq() {
+       _rpc_seq += 1;
+       return _rpc_seq;
+}
+
+function get_seq() {
+       return _rpc_seq;
+}
 
 function activeFeedIsCat() {
        return _active_feed_is_cat;
@@ -34,13 +38,14 @@ function getActiveFeedId() {
 
 function setActiveFeedId(id, is_cat) {
        try {
-               //console.log("sAFID(" + id + ", " + is_cat + ")");
                _active_feed_id = id;
 
                if (is_cat != undefined) {
                        _active_feed_is_cat = is_cat;
                }
 
+               selectFeed(id, is_cat);
+
        } catch (e) {
                exception_error("setActiveFeedId", e);
        }
@@ -88,48 +93,15 @@ function dlg_frefresh_callback(transport, deleted_feed) {
                setTimeout("viewfeed(-5)", 100);
        }
 
-       setTimeout('updateFeedList(false, false)', 50);
+       setTimeout('updateFeedList()', 50);
        closeInfoBox();
 }
 
-function scheduleFeedUpdate() {
-
-       window.clearTimeout(counter_timeout_id);
-
-       var query_str = "backend.php?op=rpc&subop=getAllCounters";
-
-       var omode;
-
-       if (firsttime_update && !navigator.userAgent.match("Opera")) {
-               firsttime_update = false;
-               omode = "T";
-       } else {
-               if (display_tags) {
-                       omode = "tl";
-               } else {
-                       omode = "flc";
-               }
-       }
-       
-       query_str = query_str + "&omode=" + omode;
-       query_str = query_str + "&uctr=" + global_unread;
-
-       console.log("[scheduleFeedUpdate] " + query_str);
-
-       new Ajax.Request("backend.php", {
-               parameters: query_str,
-               onComplete: function(transport) { 
-                               parse_counters_reply(transport, true);
-                       } });
-}
-
 function updateFeedList() {
        try {
-               console.log("updateFeedList");
+               console.warn("updateFeedList: function not implemented");
        
-               if (offline_mode) return render_offline_feedlist();
-       
-               var query_str = "backend.php?op=feeds";
+/*             var query_str = "backend.php?op=feeds";
        
                if (display_tags) {
                        query_str = query_str + "&tags=1";
@@ -143,7 +115,7 @@ function updateFeedList() {
                        parameters: query_str,
                        onComplete: function(transport) { 
                                render_feedlist(transport.responseText);
-                       } });
+                       } }); */
 
        } catch (e) {
                exception_error("updateFeedList", e);
@@ -160,7 +132,7 @@ function catchupAllFeeds() {
 
                notify_progress("Marking all feeds as read...");
 
-               console.log("catchupAllFeeds Q=" + query_str);
+               //console.log("catchupAllFeeds Q=" + query_str);
 
                new Ajax.Request("backend.php", {
                        parameters: query_str,
@@ -175,59 +147,76 @@ function catchupAllFeeds() {
 
 function viewCurrentFeed(subop) {
 
-//     if (getActiveFeedId()) {
        if (getActiveFeedId() != undefined) {
                viewfeed(getActiveFeedId(), subop, activeFeedIsCat());
-       } else {
-//             viewfeed(-1, subop); // FIXME
        }
        return false; // block unneeded form submits
 }
 
-function viewfeed(feed, subop) {
-       var f = window.frames["feeds-frame"];
-       f.viewfeed(feed, subop);
-}
-
 function timeout() {
        if (getInitParam("bw_limit") == "1") return;
 
-       scheduleFeedUpdate(false);
+       try {
+          var date = new Date();
+      var ts = Math.round(date.getTime() / 1000);
 
-       setTimeout("timeout()", 10*1000);
-}
+               if (ts - last_scheduled_update > 10 || _force_scheduled_update) {
 
-function resetSearch() {
-       var searchbox = $("searchbox")
+                       //console.log("timeout()");
 
-       if (searchbox.value != "" && getActiveFeedId()) {       
-               searchbox.value = "";
-               viewfeed(getActiveFeedId(), "");
+                       window.clearTimeout(counter_timeout_id);
+               
+                       var query_str = "?op=rpc&subop=getAllCounters&seq=" + next_seq();
+               
+                       var omode;
+               
+                       if (firsttime_update && !navigator.userAgent.match("Opera")) {
+                               firsttime_update = false;
+                               omode = "T";
+                       } else {
+                               if (display_tags) {
+                                       omode = "tl";
+                               } else {
+                                       omode = "flc";
+                               }
+                       }
+                       
+                       query_str = query_str + "&omode=" + omode;
+
+                       if (!_force_scheduled_update)
+                               query_str = query_str + "&last_article_id=" + getInitParam("last_article_id");
+               
+                       //console.log("[timeout]" + query_str);
+               
+                       new Ajax.Request("backend.php", {
+                               parameters: query_str,
+                               onComplete: function(transport) { 
+                                               handle_rpc_reply(transport, !_force_scheduled_update);
+                                               _force_scheduled_update = false;
+                                       } });
+
+                       last_scheduled_update = ts;
+               }
+
+       } catch (e) {
+               exception_error("timeout", e);
        }
+
+       setTimeout("timeout()", 3000);
 }
 
 function search() {
        closeInfoBox(); 
-       viewCurrentFeed(0, "");
+       viewCurrentFeed();
 }
 
-// if argument is undefined, current subtitle is not updated
-// use blank string to clear subtitle
-function updateTitle(s) {
+function updateTitle() {
        var tmp = "Tiny Tiny RSS";
 
-       if (s != undefined) {
-               current_subtitle = s;
-       }
-
        if (global_unread > 0) {
                tmp = tmp + " (" + global_unread + ")";
        }
 
-       if (current_subtitle) {
-               tmp = tmp + " - " + current_subtitle;
-       }
-
        if (window.fluid) {
                if (global_unread > 0) {
                        window.fluid.dockBadge = global_unread;
@@ -250,13 +239,82 @@ function genericSanityCheck() {
 }
 
 function init() {
-
        try {
-
-               init_gears();
-
                Form.disable("main_toolbar_form");
 
+               dojo.require("dijit.layout.BorderContainer");
+               dojo.require("dijit.layout.ContentPane");
+               dojo.require("dijit.Dialog");
+               dojo.require("dijit.form.Button");
+               dojo.require("dojo.data.ItemFileWriteStore");
+               dojo.require("dijit.Tree");
+               dojo.require("dijit.form.Select");
+               dojo.require("dojo.parser");
+
+               dojo.addOnLoad(function() {
+
+                       var store = new dojo.data.ItemFileWriteStore({
+          url: "backend.php?op=feeds"});
+
+                       treeModel = new dijit.tree.ForestStoreModel({
+                               store: store,
+                               query: {
+                                       "type": "feed"
+                               },
+                               rootId: "root",
+                               rootLabel: "Feeds",
+                               childrenAttrs: ["items"]
+                       });
+
+                       var tree = new dijit.Tree({
+                               model: treeModel,
+                               _createTreeNode: function(args) {
+                                       var tnode = new dijit._TreeNode(args);
+                                       tnode.labelNode.innerHTML = args.label;
+                                       return tnode;
+                                       },
+                               getLabelClass: function (item, opened) {
+                                       return (item.unread == 0) ? "dijitTreeLabel" : "dijitTreeLabel Unread";
+                               },
+                               getRowClass: function (item, opened) {
+                                       return (!item.error || item.error == '') ? "dijitTreeRow" : 
+                                               "dijitTreeRow Error";
+                               },
+                               getLabel: function(item) {
+                                       if (item.unread > 0) {
+                                               return item.name + " (" + item.unread + ")";
+                                       } else {
+                                               return item.name;
+                                       }
+                               },
+                               onOpen: function (item, node) {
+                                       var id = String(item.id);
+                                       var cat_id = id.substr(id.indexOf(":")+1);
+
+                                       new Ajax.Request("backend.php", 
+                                               { parameters: "backend.php?op=feeds&subop=collapse&cid=" + 
+                                                       param_escape(cat_id) + "&mode=1" } );
+                          },
+                               onClose: function (item, node) {
+                                       var id = String(item.id);
+                                       var cat_id = id.substr(id.indexOf(":")+1);
+
+                                       new Ajax.Request("backend.php", 
+                                               { parameters: "backend.php?op=feeds&subop=collapse&cid=" + 
+                                                       param_escape(cat_id) + "&mode=0" } );
+
+                          },
+                               onClick: function (item, node) {
+                                       var id = String(item.id);
+                                       var is_cat = id.match("^CAT:");
+                                       var feed = id.substr(id.indexOf(":")+1);
+                                       viewfeed(feed, '', is_cat);                             
+                               },
+                               showRoot: false,
+                       }, "feedTree");
+
+               });
+
                if (!genericSanityCheck()) 
                        return;
 
@@ -275,124 +333,28 @@ function init() {
        }
 }
 
-function resize_headlines(delta_x, delta_y) {
-
-       try {
-
-               console.log("resize_headlines: " + delta_x + ":" + delta_y);
-       
-               var h_frame = $("headlines-frame");
-               var c_frame = $("content-frame");
-               var f_frame = $("footer");
-               var feeds_frame = $("feeds-holder");
-               var resize_grab = $("resize-grabber");
-               var resize_handle = $("resize-handle");
-
-               if (!c_frame || !h_frame) return;
-       
-               if (feeds_frame && getInitParam("theme") == "old-skool") {
-                               feeds_frame.style.bottom = f_frame.offsetHeight + "px";         
-               }
-       
-               if (getInitParam("theme_options").match("horiz_resize")) {
-       
-                       if (delta_x != undefined) {
-                               if (c_frame.offsetLeft - delta_x > feeds_frame.offsetWidth + feeds_frame.offsetLeft + 100 && c_frame.offsetWidth + delta_x > 100) {
-                                       hor_offset = hor_offset + delta_x;
-                               }
-                       }
-       
-                       console.log("resize_headlines: HOR-mode: " + hor_offset);
-       
-                       c_frame.style.width = (400 + hor_offset) + "px";
-                       h_frame.style.right = c_frame.offsetWidth - 1 + "px";
-       
-                       resize_grab.style.top = (h_frame.offsetTop + h_frame.offsetHeight - 60) + "px";
-                       resize_grab.style.left = (h_frame.offsetLeft + h_frame.offsetWidth - 
-                               4) + "px";
-                       resize_grab.style.display = "block";
-
-                       //resize_handle.src = "themes/"+getInitParam('theme')+"/images/resize_handle_vert.png";
-                       resize_handle.style.paddingTop = (resize_grab.offsetHeight / 2 - 7) + "px";
-       
-               } else {
-       
-                       if (delta_y != undefined) {
-                               if (c_frame.offsetHeight + delta_y > 100 && h_frame.offsetHeight - delta_y > 100) {
-                                       ver_offset = ver_offset + delta_y;
-                               }
-                       }
-       
-                       console.log("resize_headlines: VER-mode: " + ver_offset);
-       
-                       h_frame.style.height = (300 - ver_offset) + "px";
-       
-                       c_frame.style.top = (h_frame.offsetTop + h_frame.offsetHeight + 0) + "px";
-                       h_frame.style.height = h_frame.offsetHeight + "px";
-
-                       // Workaround for Opera: force the content page to be re-rendered, 
-                       // so it is not truncated:
-                       var content_pane = $("content-insert");
-                       content_pane.innerHTML = content_pane.innerHTML;
-               }
-       
-               if (getInitParam("cookie_lifetime") != 0) {
-                       setCookie("ttrss_offset_ver", ver_offset, 
-                               getInitParam("cookie_lifetime"));
-                       setCookie("ttrss_offset_hor", hor_offset, 
-                               getInitParam("cookie_lifetime"));
-               } else {
-                       setCookie("ttrss_offset_ver", ver_offset);
-                       setCookie("ttrss_offset_hor", hor_offset);
-               }
-
-       } catch (e) {
-               exception_error("resize_headlines", e);
-       }
-
-}
-
 function init_second_stage() {
 
        try {
 
                delCookie("ttrss_test");
 
-               window.onresize=resize_headlines;
-
                var toolbar = document.forms["main_toolbar_form"];
 
                dropboxSelect(toolbar.view_mode, getInitParam("default_view_mode"));
                dropboxSelect(toolbar.order_by, getInitParam("default_view_order_by"));
 
-               daemon_enabled = getInitParam("daemon_enabled") == 1;
                feeds_sort_by_unread = getInitParam("feeds_sort_by_unread") == 1;
 
-               setTimeout('updateFeedList(false, false)', 50);
-
-               console.log("second stage ok");
-
                loading_set_progress(60);
 
-               ver_offset = parseInt(getCookie("ttrss_offset_ver"));
-               hor_offset = parseInt(getCookie("ttrss_offset_hor"));
-
-               console.log("got offsets from cookies: ver " + ver_offset + " hor " + hor_offset);
-
-               /* fuck IE */
-
-               if (isNaN(hor_offset)) hor_offset = 0;
-               if (isNaN(ver_offset)) ver_offset = 0;
-
-               console.log("offsets from cookies [x:y]: " + hor_offset + ":" + ver_offset);
-
-               resize_headlines();
-
-               enable_offline_reading();
-
                if (has_local_storage())
                        localStorage.clear();
 
+               console.log("second stage ok");
+
+               feedlist_init();
+
        } catch (e) {
                exception_error("init_second_stage", e);
        }
@@ -454,11 +416,6 @@ function quickMenuGo(opid) {
                        return;
                }
 
-               if (opid == "qmcUpdateFeeds") {
-                       scheduleFeedUpdate(true);
-                       return;
-               }
-       
                if (opid == "qmcCatchupAll") {
                        catchupAllFeeds();
                        return;
@@ -488,9 +445,7 @@ function quickMenuGo(opid) {
                }
 
                if (opid == "qmcResetUI") {
-                       hor_offset = 0;
-                       ver_offset = 0;
-                       resize_headlines();
+                       alert("Function not implemented");
                }
 
                if (opid == "qmcToggleReorder") {
@@ -550,21 +505,18 @@ function toggleDispRead() {
 function parse_runtime_info(elem) {
 
        if (!elem || !elem.firstChild) {
+               console.warn("parse_runtime_info: invalid node passed");
                return;
        }
 
        var data = JSON.parse(elem.firstChild.nodeValue);
 
-       console.log("parsing runtime info...");
+       //console.log("parsing runtime info...");
 
        for (k in data) {
                var v = data[k];
 
-               console.log("RI: " + k + " => " + v);
-
-               if (k == "num_feeds") {
-                       init_params[k] = v;                                     
-               }
+               // console.log("RI: " + k + " => " + v);
 
                if (k == "new_version_available") {
                        var icon = $("newVersionIcon");
@@ -575,24 +527,23 @@ function parse_runtime_info(elem) {
                                        icon.style.display = "none";
                                }
                        }
+                       return;
                }
 
                var error_flag;
 
                if (k == "daemon_is_running" && v != 1) {
                        notify_error("<span onclick=\"javascript:explainError(1)\">Update daemon is not running.</span>", true);
-                       error_flag = true;
+                       return;
                }
 
                if (k == "daemon_stamp_ok" && v != 1) {
                        notify_error("<span onclick=\"javascript:explainError(3)\">Update daemon is not updating feeds.</span>", true);
-                       error_flag = true;
+                       return;
                }
 
-               if (!error_flag) {
-                       notify('');
-               } 
-
+               init_params[k] = v;                                     
+               notify('');
        }
 }
 
@@ -697,67 +648,11 @@ function feedEditSave() {
 
 function collapse_feedlist() {
        try {
-               console.log("collapse_feedlist");
-               
-               var theme = getInitParam("theme");
-               if (theme != "" && 
-                               !getInitParam("theme_options").match("collapse_feedlist")) return;
-
-               var fl = $("feeds-holder");
-               var fh = $("headlines-frame");
-               var fc = $("content-frame");
-               var ft = $("toolbar");
-               var ff = $("footer");
-               var fhdr = $("header");
-               var fbtn = $("collapse_feeds_btn");
-
-               if (!Element.visible(fl)) {
-                       Element.show(fl);
-                       fbtn.innerHTML = "&lt;&lt;";
-
-                       if (theme != "graycube") {
-
-                               fh.style.left = fl.offsetWidth + "px";
-                               ft.style.left = fl.offsetWidth + "px";
-                               if (fc) fc.style.left = fl.offsetWidth + "px";
-                               if (ff && theme != "compat") ff.style.left = (fl.offsetWidth-1) + "px";
-
-                               if (theme == "compact") fhdr.style.left = (fl.offsetWidth + 10) + "px";
-                       } else {
-                               fh.style.left = fl.offsetWidth + 40 + "px";
-                               ft.style.left = fl.offsetWidth + 40 +"px";
-                               if (fc) fc.style.left = fl.offsetWidth + 40 + "px";
-                       }
-
-                       query = "?op=rpc&subop=setpref&key=_COLLAPSED_FEEDLIST&value=false";
-
-                       new Ajax.Request("backend.php", { parameters: query });
-
-               } else {
-                       Element.hide(fl);
-                       fbtn.innerHTML = "&gt;&gt;";
-
-                       if (theme != "graycube") {
-
-                               fh.style.left = "0px";
-                               ft.style.left = "0px";
-                               if (fc) fc.style.left = "0px";
-                               if (ff) ff.style.left = "0px";
-
-                               if (theme == "compact") fhdr.style.left = "10px";
-
-                       } else {
-                               fh.style.left = "20px";
-                               ft.style.left = "20px";
-                               if (fc) fc.style.left = "20px";
-
-                       }
-
-                       query = "?op=rpc&subop=setpref&key=_COLLAPSED_FEEDLIST&value=true";
+               console.warn("collapse_feedlist: function not implemented");
 
-                       new Ajax.Request("backend.php", { parameters: query });
+               query = "?op=rpc&subop=setpref&key=_COLLAPSED_FEEDLIST&value=true";
+               new Ajax.Request("backend.php", { parameters: query });
 
-               }
        } catch (e) {
                exception_error("collapse_feedlist", e);
        }
@@ -765,12 +660,12 @@ function collapse_feedlist() {
 
 function viewModeChanged() {
        cache_flush();
-       return viewCurrentFeed(0, '')
+       return viewCurrentFeed('')
 }
 
 function viewLimitChanged() {
        cache_flush();
-       return viewCurrentFeed(0, '')
+       return viewCurrentFeed('')
 }
 
 /* function adjustArticleScore(id, score) {
@@ -831,7 +726,6 @@ function hotkey_handler(e) {
                var shift_key = false;
 
                var cmdline = $('cmdline');
-               var feedlist = $('feedList');
 
                try {
                        shift_key = e.shiftKey;
@@ -855,12 +749,13 @@ function hotkey_handler(e) {
                        closeInfoBox();
                } 
 
-               if (!hotkeys_enabled) {
+               if (dialogs.length > 0 || !hotkeys_enabled) {
                        console.log("hotkeys disabled");
                        return;
                }
 
                if (keycode == 16) return; // ignore lone shift
+               if (keycode == 17) return; // ignore lone ctrl
 
                if ((keycode == 70 || keycode == 67 || keycode == 71) 
                                && !hotkey_prefix) {
@@ -906,10 +801,10 @@ function hotkey_handler(e) {
                                return false;
                        }
 
-                       if (keycode == 82 && shift_key) { // R
+/*                     if (keycode == 82 && shift_key) { // R
                                scheduleFeedUpdate(true);
                                return;
-                       }
+                       } */
 
                        if (keycode == 74) { // j
                                var feed = getActiveFeedId();
@@ -964,10 +859,11 @@ function hotkey_handler(e) {
                        }
 
                        if (keycode == 68 && shift_key) { // shift-D
-                               if (isCdmMode()) {
-                                       //cdmDismissArticle(active_post_id);
-                                       cdmDismissSelectedArticles();
-                               }
+                               dismissSelectedArticles();
+                       }
+
+                       if (keycode == 88 && shift_key) { // shift-X
+                               dismissReadArticles();
                        }
 
                        if (keycode == 78 || keycode == 40) { // n, down
@@ -985,27 +881,18 @@ function hotkey_handler(e) {
                        }
 
                        if (keycode == 83 && shift_key) { // S
-                               var id = getActiveArticleId();
-                               if (id) {                               
-                                       togglePub(id);
-                               }
+                               selectionTogglePublished(undefined, false, true);
                                return;
                        }
 
                        if (keycode == 83) { // s
-                               var id = getActiveArticleId();
-                               if (id) {                               
-                                       toggleMark(id);
-                               }
+                               selectionToggleMarked(undefined, false, true);
                                return;
                        }
 
 
                        if (keycode == 85) { // u
-                               var id = getActiveArticleId();
-                               if (id) {                               
-                                       toggleUnread(id);
-                               }
+                               selectionToggleUnread(undefined, false, true)
                                return;
                        }
 
@@ -1076,10 +963,10 @@ function hotkey_handler(e) {
                                return false;
                        }
 
-                       if (keycode == 85 && shift_key) { // U
+/*                     if (keycode == 85 && shift_key) { // U
                                scheduleFeedUpdate(true);
                                return false;
-                       }
+                       } */
 
                        if (keycode == 85) { // u
                                if (getActiveFeedId()) {
@@ -1117,11 +1004,6 @@ function hotkey_handler(e) {
                                return resort_feedlist();
                        }
 
-                       if (keycode == 72) { // h
-                               hideReadHeadlines();
-                               return;
-                       }
-
                        if (keycode == 88) { // x
                                reverseHeadlineOrder();
                                return;
@@ -1232,10 +1114,6 @@ function hotkey_handler(e) {
        }
 }
 
-function feedsSortByUnread() {
-       return feeds_sort_by_unread;
-}
-
 function inPreferences() {
        return false;
 }
@@ -1260,3 +1138,94 @@ function showFeedsWithErrors() {
        displayDlg('feedUpdateErrors');
 }
 
+function handle_rpc_reply(transport, scheduled_call) {
+       try {
+               if (transport.responseXML) {
+
+                       if (!transport_error_check(transport)) return false;
+
+                       var seq = transport.responseXML.getElementsByTagName("seq")[0];
+
+                       if (seq) {
+                               seq = seq.firstChild.nodeValue;
+
+                               if (get_seq() != seq) {
+                                       //console.log("[handle_rpc_reply] sequence mismatch: " + seq);
+                                       return true;
+                               }
+                       }
+
+                       var message = transport.responseXML.getElementsByTagName("message")[0];
+
+                       if (message) {
+                               message = message.firstChild.nodeValue;
+
+                               if (message == "UPDATE_COUNTERS") {
+                                       console.log("need to refresh counters...");
+                                       setInitParam("last_article_id", -1);
+                                       _force_scheduled_update = true;
+                               }
+                       }
+
+                       var counters = transport.responseXML.getElementsByTagName("counters")[0];
+       
+                       if (counters)
+                               parse_counters(counters, scheduled_call);
+
+                       var runtime_info = transport.responseXML.getElementsByTagName("runtime-info")[0];
+
+                       if (runtime_info)
+                               parse_runtime_info(runtime_info);
+
+                       if (feedsSortByUnread())
+                               resort_feedlist();
+
+                       hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
+
+               } else {
+                       notify_error("Error communicating with server.");
+               }
+
+       } catch (e) {
+               exception_error("handle_rpc_reply", e, transport);
+       }
+
+       return true;
+}
+
+function scheduleFeedUpdate() {
+       try {
+
+               if (!getActiveFeedId()) {
+                       alert(__("Please select some feed first."));
+                       return;
+               }
+
+               var query = "?op=rpc&subop=scheduleFeedUpdate&id=" + 
+                       param_escape(getActiveFeedId()) +
+                       "&is_cat=" + param_escape(activeFeedIsCat());
+
+               console.log(query);
+
+               new Ajax.Request("backend.php", {
+                       parameters: query,
+                       onComplete: function(transport) { 
+
+                               if (transport.responseXML) {
+                                       var message = transport.responseXML.getElementsByTagName("message")[0];
+
+                                       if (message) {
+                                               notify_info(message.firstChild.nodeValue);
+                                               return;
+                                       }
+                               }
+
+                               notify_error("Error communicating with server.");
+
+                       } });
+
+
+       } catch (e) {
+               exception_error("scheduleFeedUpdate", e);
+       }
+}