]> git.wh0rd.org - tt-rss.git/blobdiff - functions.js
tweak quickAddFeed dialog
[tt-rss.git] / functions.js
index c3158e34e228996d6d36944388d0b1d87ab99eb8..732e73ec846a2b4853d1aa09df9787b0a07054cc 100644 (file)
@@ -2,15 +2,35 @@ var hotkeys_enabled = true;
 var debug_mode_enabled = false;
 var xmlhttp_rpc = Ajax.getTransport();
 
+/* add method to remove element from array */
+
+Array.prototype.remove = function(s) {
+       for (var i=0; i < this.length; i++) {
+               if (s == this[i]) this.splice(i, 1);
+       }
+}
+
 function browser_has_opacity() {
        return navigator.userAgent.match("Gecko") != null || 
                navigator.userAgent.match("Opera") != null;
 }
 
+function is_msie() {
+       return navigator.userAgent.match("MSIE");
+}
+
 function is_opera() {
        return navigator.userAgent.match("Opera");
 }
 
+function is_khtml() {
+       return navigator.userAgent.match("KHTML");
+}
+
+function is_safari() {
+       return navigator.userAgent.match("Safari");
+}
+
 function exception_error(location, e, silent) {
        var msg;
 
@@ -44,6 +64,45 @@ function xmlhttp_ready(obj) {
        return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
 }
 
+function open_article_callback() {
+       if (xmlhttp_rpc.readyState == 4) {
+               try {
+
+                       if (xmlhttp_rpc.responseXML) {
+                               var link = xmlhttp_rpc.responseXML.getElementsByTagName("link")[0];
+                               var id = xmlhttp_rpc.responseXML.getElementsByTagName("id")[0];
+
+                               if (link) {
+                                       window.open(link.firstChild.nodeValue, "_blank");
+
+                                       if (id) {
+                                               id = id.firstChild.nodeValue;
+                                               if (!document.getElementById("headlinesList")) {
+                                                       window.setTimeout("toggleUnread(" + id + ", 0)", 100);
+                                               }
+                                       }
+                               }
+                       }
+
+               } catch (e) {
+                       exception_error("open_article_callback", e);
+               }
+       }
+}
+
+function logout_callback() {
+       var container = document.getElementById('notify');
+       if (xmlhttp.readyState == 4) {
+               try {
+                       var date = new Date();
+                       var timestamp = Math.round(date.getTime() / 1000);
+                       window.location.href = "tt-rss.php";
+               } catch (e) {
+                       exception_error("logout_callback", e);
+               }
+       }
+}
+
 function notify_callback() {
        var container = document.getElementById('notify');
        if (xmlhttp.readyState == 4) {
@@ -82,34 +141,18 @@ function delay(gap) {
 }
 
 var notify_hide_timerid = false;
-var notify_last_doc = false;
-
-var notify_effect = false; 
 
 function hide_notify() {
-       if (notify_last_doc) {
-               var n = notify_last_doc.getElementById("notify");               
+       var n = document.getElementById("notify");
+       if (n) {
                n.style.display = "none";
-
-/*             if (browser_has_opacity()) {
-                       if (notify_opacity >= 0) {
-                               notify_opacity = notify_opacity - 0.1;
-                               n.style.opacity = notify_opacity;
-                               notify_hide_timerid = window.setTimeout("hide_notify()", 20);   
-                       } else {
-                               n.style.display = "none";
-                               n.style.opacity = 1;
-                       }
-               } else {
-                       n.style.display = "none";
-               } */
        }
 } 
 
-function notify_real(msg, doc, no_hide, is_err) {
+function notify_real(msg, no_hide, n_type) {
 
-       var n = doc.getElementById("notify");
-       var nb = doc.getElementById("notify_body");
+       var n = document.getElementById("notify");
+       var nb = document.getElementById("notify_body");
 
        if (!n || !nb) return;
 
@@ -117,9 +160,6 @@ function notify_real(msg, doc, no_hide, is_err) {
                window.clearTimeout(notify_hide_timerid);
        }
 
-       notify_last_doc = doc;
-       notify_opacity = 1;
-
        if (msg == "") {
                if (n.style.display == "block") {
                        notify_hide_timerid = window.setTimeout("hide_notify()", 0);
@@ -129,16 +169,30 @@ function notify_real(msg, doc, no_hide, is_err) {
                n.style.display = "block";
        }
 
-       if (is_err) {
-               n.className = "notifyError";
-//             n.style.backgroundColor = "#ffcccc";
-//             n.style.color = "black";
-//             n.style.borderColor = "#ff0000";
-       } else {
+       /* types:
+
+               1 - generic
+               2 - progress
+               3 - error
+               4 - info
+
+       */
+
+       if (typeof __ != 'undefined') {
+               msg = __(msg);
+       }
+
+       if (n_type == 1) {
                n.className = "notify";
-//             n.style.backgroundColor = "#fff7d5";
-//             n.style.borderColor = "#d7c47a";
-//             n.style.color = "black";
+       } else if (n_type == 2) {
+               n.className = "notifyProgress";
+               msg = "<img src='images/indicator_white.gif'> " + msg;
+       } else if (n_type == 3) {
+               n.className = "notifyError";
+               msg = "<img src='images/sign_excl.png'> " + msg;
+       } else if (n_type == 4) {
+               n.className = "notifyInfo";
+               msg = "<img src='images/sign_info.png'> " + msg;
        }
 
 //     msg = "<img src='images/live_com_loading.gif'> " + msg;
@@ -150,16 +204,26 @@ function notify_real(msg, doc, no_hide, is_err) {
        }
 }
 
-function p_notify(msg, no_hide, is_err) {
-       notify_real(msg, document, no_hide, is_err);
+function notify(msg, no_hide) {
+       notify_real(msg, no_hide, 1);
+}
+
+function notify_progress(msg, no_hide) {
+       notify_real(msg, no_hide, 2);
+}
+
+function notify_error(msg, no_hide) {
+       notify_real(msg, no_hide, 3);
+
 }
 
-function notify(msg, no_hide, is_err) {
-       notify_real(msg, document, no_hide, is_err);
+function notify_info(msg, no_hide) {
+       notify_real(msg, no_hide, 4);
 }
 
 function printLockingError() {
-       notify("Please wait until operation finishes");}
+       notify_info("Please wait until operation finishes.");
+}
 
 function hotkey_handler(e) {
 
@@ -237,10 +301,63 @@ function hotkey_handler(e) {
                        debug_mode_enabled = !debug_mode_enabled;
                }
 
-               if (keycode == 69 && shift_key) {
+               if (keycode == 190 && shift_key) { // >
+                       viewFeedGoPage(1);
+               }
+               
+               if (keycode == 188 && shift_key) { // <
+                       viewFeedGoPage(-1);
+               }
+
+               if (keycode == 191 && shift_key) { // ?
+                       viewFeedGoPage(0);
+               }
+
+               if (keycode == 69 && shift_key) { // e
                        return editFeedDlg(getActiveFeedId());
                }
 
+               if (keycode == 70 && shift_key) { // f
+                       if (getActiveFeedId()) {
+                               return catchupCurrentFeed();
+                       }
+               }
+
+               if (keycode == 80 && shift_key) { // p 
+                       if (getActiveFeedId()) {
+                               return catchupPage();
+                       }
+               }
+
+               if (keycode == 86) { // v
+                       if (getActiveArticleId()) {
+                               openArticleInNewWindow(getActiveArticleId());
+                       }
+               }
+
+               if (keycode == 84) { // t
+
+                       var id = getActiveArticleId();
+
+                       if (id) {                               
+
+                               var cb = document.getElementById("RCHK-" + id);
+
+                               if (cb) {
+                                       cb.checked = !cb.checked;
+                                       toggleSelectRowById(cb, "RROW-" + id);
+                               }
+                       }
+               }
+
+               if (keycode == 67) { // c
+                       var id = getActiveArticleId();
+
+                       if (id) {                               
+                               toggleUnread(id, 0);
+                       }
+               }
+
                if (typeof localHotkeyHandler != 'undefined') {
                        try {
                                return localHotkeyHandler(e);
@@ -378,8 +495,10 @@ function setCookie(name, value, lifetime, path, domain, secure) {
        
        if (lifetime) {
                d = new Date();
-               d.setTime(lifetime * 1000);
+               d.setTime(d.getTime() + (lifetime * 1000));
        }
+
+       debug("setCookie: " + name + " => " + value + ": " + d);
        
        int_setCookie(name, value, d, path, domain, secure);
 
@@ -529,7 +648,12 @@ function parse_counters(reply, scheduled_call) {
                        if (t == "category") {
                                var catctr = document.getElementById("FCATCTR-" + id);
                                if (catctr) {
-                                       catctr.innerHTML = "(" + ctr + " unread)";
+                                       catctr.innerHTML = "(" + ctr + ")";
+                                       if (ctr > 0) {
+                                               catctr.className = "catCtrHasUnread";
+                                       } else {
+                                               catctr.className = "catCtrNoUnread";
+                                       }
                                }
                                continue;
                        }
@@ -562,7 +686,9 @@ function parse_counters(reply, scheduled_call) {
                                if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
                                        viewCurrentFeed();
                                }
-               
+
+                               var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
+
                                feedu.innerHTML = ctr;
 
                                if (error) {
@@ -583,8 +709,12 @@ function parse_counters(reply, scheduled_call) {
                
                                                if (is_selected) {
                                                        feedr.className = feedr.className + "Selected";
-                                               }
-               
+                                               }       
+                                               
+                                       }
+
+                                       if (row_needs_hl) { 
+                                               new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5"});
                                        }
                                } else {
                                        feedctr.className = "invisible";
@@ -616,14 +746,14 @@ function parse_counters(reply, scheduled_call) {
 function parse_counters_reply(xmlhttp, scheduled_call) {
 
        if (!xmlhttp.responseXML) {
-               notify("refetch_callback: backend did not return valid XML", true, true);
+               notify_error("Backend did not return valid XML", true);
                return;
        }
 
        var reply = xmlhttp.responseXML.firstChild;
        
        if (!reply) {
-               notify("refetch_callback: backend did not return expected XML object", true, true);
+               notify_error("Backend did not return expected XML object", true);
                updateTitle("");
                return;
        } 
@@ -777,6 +907,18 @@ function update_all_counters(feed) {
                        query = query + "&aid=" + feed;
                }
 
+               if (tagsAreDisplayed()) {
+                       query = query + "&omode=lt";
+               } else {
+                       query = query + "&omode=flc";
+               }
+
+               debug("update_all_counters QUERY: " + query);
+
+               var date = new Date();
+               var timestamp = Math.round(date.getTime() / 1000);
+               query = query + "&ts=" + timestamp
+
                xmlhttp_rpc.open("GET", query, true);
                xmlhttp_rpc.onreadystatechange=all_counters_callback;
                xmlhttp_rpc.send(null);
@@ -867,21 +1009,27 @@ function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 
                        if (node.childNodes[i].style != undefined) {
 
-                               var has_unread = (node.childNodes[i].className != "feed");
+                               var has_unread = (node.childNodes[i].className != "feed" &&
+                                       node.childNodes[i].className != "label" && 
+                                       node.childNodes[i].className != "tag");
        
        //                      debug(node.childNodes[i].id + " --> " + has_unread);
        
                                if (hide && !has_unread) {
-                                       node.childNodes[i].style.display = "none";
+                                       //node.childNodes[i].style.display = "none";
+                                       Effect.Fade(node.childNodes[i], {duration : 0.3});
                                }
        
                                if (!hide) {
                                        node.childNodes[i].style.display = "list-item";
+                                       //Effect.Appear(node.childNodes[i], {duration : 0.3});
                                }
        
                                if (has_unread) {
                                        node.childNodes[i].style.display = "list-item";
                                        cat_unread++;
+                                       //Effect.Appear(node.childNodes[i], {duration : 0.3});
+                                       //Effect.Highlight(node.childNodes[i]);
                                }
                        }
                }
@@ -894,7 +1042,8 @@ function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
                        return;
                }
                if (hide) {
-                       cat_node.style.display = "none";
+                       //cat_node.style.display = "none";
+                       Effect.Fade(cat_node, {duration : 0.3});
                } else {
                        cat_node.style.display = "list-item";
                }
@@ -1036,6 +1185,9 @@ function toggleSelectListRow(sender) {
        }
 }
 
+function tSR(sender) {
+       return toggleSelectRow(sender);
+}
 
 function toggleSelectRow(sender) {
        var parent_row = sender.parentNode.parentNode;
@@ -1056,7 +1208,48 @@ function openExternalUrl(url) {
 }
 
 function getRelativeFeedId(list, id, direction, unread_only) { 
+       var rows = list.getElementsByTagName("LI");
+       var feeds = new Array();
+
+       for (var i = 0; i < rows.length; i++) {
+               if (rows[i].id.match("FEEDR-")) {
+
+                       if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
+
+                               if (!unread_only || 
+                                               (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
+                                       feeds.push(rows[i].id.replace("FEEDR-", ""));
+                               }
+                       }
+               }
+       }
+
        if (!id) {
+               if (direction == "next") {
+                       return feeds.shift();
+               } else {
+                       return feeds.pop();
+               }
+       } else {
+               if (direction == "next") {
+                       var idx = feeds.indexOf(id);
+                       if (idx != -1 && idx < feeds.length) {
+                               return feeds[idx+1];                                    
+                       } else {
+                               return getRelativeFeedId(list, false, direction, unread_only);
+                       }
+               } else {
+                       var idx = feeds.indexOf(id);
+                       if (idx > 0) {
+                               return feeds[idx-1];
+                       } else {
+                               return getRelativeFeedId(list, false, direction, unread_only);
+                       }
+               }
+
+       }
+
+/*     if (!id) {
                if (direction == "next") {
                        for (i = 0; i < list.childNodes.length; i++) {
                                var child = list.childNodes[i];
@@ -1076,7 +1269,7 @@ function getRelativeFeedId(list, id, direction, unread_only) {
                if (direction == "prev") {
                        for (i = list.childNodes.length-1; i >= 0; i--) {
                                var child = list.childNodes[i];                         
-                               if (child.id == "feedCatHolder") {
+                               if (child.id == "feedCatHolder" && Element.visible(child)) {
                                        if (child.firstChild) {
                                                var cr = getRelativeFeedId(child.firstChild, id, direction);
                                                if (cr) return cr;                                      
@@ -1085,7 +1278,7 @@ function getRelativeFeedId(list, id, direction, unread_only) {
                                
                                        if (getInitParam("hide_read_feeds") == 1) {
                                                if (child.className != "feed") {
-                                                       alert(child.className);
+//                                                     alert(child.className);
                                                        return child.id.replace('FEEDR-', '');                                          
                                                }                                                       
                                        } else {
@@ -1134,7 +1327,10 @@ function getRelativeFeedId(list, id, direction, unread_only) {
                                if (e) {
                                        if (!unread_only || (unread_only && e.className != "feed" &&
                                                        e.className.match("feed")))     {
-                                               return e.id.replace("FEEDR-", "");
+                                               if (e.parentNode.parentNode && 
+                                                       Element.visible(e.parentNode.parentNode)) {
+                                                       return e.id.replace("FEEDR-", "");
+                                               }
                                        }
                                }
                        }
@@ -1171,24 +1367,58 @@ function getRelativeFeedId(list, id, direction, unread_only) {
                                if (e) {
                                        if (!unread_only || (unread_only && e.className != "feed" && 
                                                        e.className.match("feed")))     {
-                                               return e.id.replace("FEEDR-", "");
+                                               if (e.parentNode.parentNode && 
+                                                       Element.visible(e.parentNode.parentNode)) {
+                                                       return e.id.replace("FEEDR-", "");
+                                               }
                                        }
                                }
                        }
                }
-       }
+       } */
 }
 
-function showBlockElement(id) {
+function showBlockElement(id, h_id) {
        var elem = document.getElementById(id);
 
        if (elem) {
                elem.style.display = "block";
+
+               if (h_id) {
+                       elem = document.getElementById(h_id);
+                       if (elem) {
+                               elem.style.display = "none";
+                       }
+               }
        } else {
                alert("[showBlockElement] can't find element with id " + id);
        } 
 }
 
+function appearBlockElement_afh(effect) {
+
+}
+
+function checkboxToggleElement(elem, id) {
+       if (elem.checked) {
+               Effect.SlideDown(id, {duration : 1.0});
+       } else {
+               Effect.SlideUp(id, {duration : 1.0});
+       }
+}
+
+function appearBlockElement(id, h_id) {
+
+       try {
+               Effect.Fade(h_id);
+               Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
+       } catch (e) {
+               exception_error("appearBlockElement", e);
+       }
+
+}
+
+
 function hideParentElement(e) {
        e.parentNode.style.display = "none";
 }
@@ -1233,6 +1463,14 @@ function leading_zero(p) {
 }
 
 function closeInfoBox(cleanup) {
+
+       if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
+               var overlay = document.getElementById("dialog_overlay");
+               if (overlay) {
+                       overlay.style.display = "none";
+               }
+       }
+
        var box = document.getElementById('infoBox');
        var shadow = document.getElementById('infoBoxShadow');
 
@@ -1257,7 +1495,7 @@ function displayDlg(id, param) {
                return
        }
 
-       notify("");
+       notify_progress("Loading, please wait...", true);
 
        xmlhttp.open("GET", "backend.php?op=dlg&id=" +
                param_escape(id) + "&param=" + param_escape(param), true);
@@ -1280,15 +1518,58 @@ function infobox_submit_callback() {
                        }
                } catch (e) { }
 
-               notify(xmlhttp.responseText);
+               if (xmlhttp.responseText) {
+                       notify_info(xmlhttp.responseText);
+               }
 
        } 
 }
 
 function infobox_callback() {
        if (xmlhttp.readyState == 4) {
-               var box = document.getElementById('infoBox');
-               var shadow = document.getElementById('infoBoxShadow');
+
+               try {
+
+                       if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
+                               var overlay = document.getElementById("dialog_overlay");
+                               if (overlay) {
+                                       overlay.style.display = "block";
+                               }
+                       }
+       
+                       var box = document.getElementById('infoBox');
+                       var shadow = document.getElementById('infoBoxShadow');
+                       if (box) {                      
+
+                               new Draggable(shadow);
+
+                               box.innerHTML=xmlhttp.responseText;                     
+                               if (shadow) {
+                                       shadow.style.display = "block";
+                               } else {
+                                       box.style.display = "block";                            
+                               }
+                       }
+
+                       /* FIXME this needs to be moved out somewhere */
+
+                       if (document.getElementById("tags_choices")) {
+                               new Ajax.Autocompleter('tags_str', 'tags_choices',
+                                       "backend.php?op=rpc&subop=completeTags",
+                                       { tokens: ',', paramName: "search" });
+                       }
+
+                       notify("");
+               } catch (e) {
+                       exception_error("infobox_callback", e);
+               }
+       }
+}
+
+function helpbox_callback() {
+       if (xmlhttp.readyState == 4) {
+               var box = document.getElementById('helpBox');
+               var shadow = document.getElementById('helpBoxShadow');
                if (box) {                      
                        box.innerHTML=xmlhttp.responseText;                     
                        if (shadow) {
@@ -1301,7 +1582,7 @@ function infobox_callback() {
        }
 }
 
-function qaddFilter() {
+function addFilter() {
 
        if (!xmlhttp_ready(xmlhttp)) {
                printLockingError();
@@ -1312,7 +1593,7 @@ function qaddFilter() {
        var reg_exp = form.reg_exp.value;
 
        if (reg_exp == "") {
-               alert("Can't add filter: nothing to match on.");
+               alert(__("Can't add filter: nothing to match on."));
                return false;
        }
 
@@ -1334,10 +1615,10 @@ function toggleSubmitNotEmpty(e, submit_id) {
 }
 
 function isValidURL(s) {
-       return s.match("http://") != null || s.match("https://") != null;
+       return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
 }
 
-function qafAdd() {
+function qaddFeed() {
 
        if (!xmlhttp_ready(xmlhttp)) {
                printLockingError();
@@ -1348,11 +1629,11 @@ function qafAdd() {
        var feed_url = form.feed_url.value;
 
        if (feed_url == "") {
-               alert("Can't subscribe: no feed URL given.");
+               alert(__("Can't subscribe: no feed URL given."));
                return false;
        }
 
-       notify("Adding feed...", true);
+       notify_progress(__("Subscribing to feed..."), true);
 
        closeInfoBox();
 
@@ -1362,9 +1643,16 @@ function qafAdd() {
        
        var query = Form.serialize("feed_add_form");
        
-       xmlhttp.open("GET", "backend.php?" + query, true);
+       debug("subscribe q: " + query);
+
+/*     xmlhttp.open("GET", "backend.php?" + query, true);
        xmlhttp.onreadystatechange=dlg_frefresh_callback;
-       xmlhttp.send(null);
+       xmlhttp.send(null); */
+
+       xmlhttp.open("POST", "backend.php", true);
+       xmlhttp.onreadystatechange=dlg_frefresh_callback;
+       xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+       xmlhttp.send(query);
 
        return false;
 }
@@ -1431,62 +1719,30 @@ function debug(msg) {
 }
 
 function getInitParam(key) {
-       return getMainContext().init_params[key];
+       return init_params[key];
 }
 
-function storeInitParam(key, value, is_client) {
-       try {
-               if (!is_client) {
-                       if (getMainContext().init_params[key] != value) {
-                               debug("storeInitParam: " + key + " => " + value);
-                               //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" + 
-                               //      param_escape(key) + "&value=" + param_escape(value));   
-                               var f = getMainContext().document.getElementById("backReqBox");
-                               f.src = "backend.php?op=rpc&subop=storeParam&key=" + 
-                                       param_escape(key) + "&value=" + param_escape(value);
-                       }
-               }
-               getMainContext().init_params[key] = value;
-       } catch (e) {
-               exception_error("storeInitParam", e);
-       }
+function storeInitParam(key, value) {
+       debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
+       init_params[key] = value;
 }
 
-/*
-function storeInitParams(params, is_client) {
-       try {
-               var s = "";
-
-               for (k in params) {
-                       if (getMainContext().init_params[k] != params[k]) {
-                               s += k + "=" + params[k] + ";";
-                               getMainContext().init_params[k] = params[k];
-                       }
-               } 
-
-               debug("storeInitParams: " + s);
-       
-               if (!is_client) {
-                       new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
-               }
-       } catch (e) {
-               exception_error("storeInitParams", e);
-       }
-}*/
-
 function fatalError(code, message) {
        try {   
 
-               if (code != 6) {
-
+               if (code == 6) {
+                       window.location.href = "tt-rss.php";                    
+               } else if (code == 5) {
+                       window.location.href = "update.php";
+               } else {
                        var fe = document.getElementById("fatal_error");
                        var fc = document.getElementById("fatal_error_msg");
        
-                       fc.innerHTML = "Code " + code + ": " + message;
+                       if (message == "") message = "Unknown error";
+
+                       fc.innerHTML = "<img src='images/sign_excl.png'> " + message + " (Code " + code + ")";
        
                        fe.style.display = "block";
-               } else {
-                       window.location.href = "login.php?rt=none";                     
                }
 
        } catch (e) {
@@ -1514,3 +1770,116 @@ function getFeedName(id, is_cat) {
 function viewContentUrl(url) {
        getContentContext().location = url;
 }
+
+function filterDlgCheckAction(sender) {
+
+       try {
+
+               var action = sender[sender.selectedIndex].value;
+
+               var form = document.forms["filter_add_form"];
+       
+               if (!form) {
+                       form = document.forms["filter_edit_form"];
+               }
+
+               if (!form) {
+                       debug("filterDlgCheckAction: can't find form!");
+                       return;
+               }
+
+               var action_param = form.action_param;
+
+               if (!action_param) {
+                       debug("filterDlgCheckAction: can't find action param!");
+                       return;
+               }
+
+               // if selected action supports parameters, enable params field
+               if (action == 4) {
+                       action_param.disabled = false;
+               } else {
+                       action_param.disabled = true;
+               }
+
+       } catch (e) {
+               exception_error(e, "filterDlgCheckAction");
+       }
+
+}
+
+function explainError(code) {
+       return displayDlg("explainError", code);
+}
+
+function logoutUser() {
+       try {
+               if (xmlhttp_ready(xmlhttp_rpc)) {
+
+                       notify_progress("Logging out, please wait...", true);
+
+                       xmlhttp_rpc.open("GET", "backend.php?op=rpc&subop=logout", true);
+                       xmlhttp_rpc.onreadystatechange=logout_callback;
+                       xmlhttp_rpc.send(null);
+               } else {
+                       printLockingError();
+               }
+       } catch (e) {
+               exception_error("logoutUser", e);
+       }
+}
+
+// this only searches loaded headlines list, not in CDM
+function getRelativePostIds(id) {
+
+       debug("getRelativePostIds: " + id);
+
+       var ids = new Array();
+       var container = document.getElementById("headlinesList");
+
+       if (container) {
+               var rows = container.rows;
+
+               for (var i = 0; i < rows.length; i++) {
+                       var r_id = rows[i].id.replace("RROW-", "");
+
+                       if (r_id == id) {
+                               if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
+                               if (i > 1) ids.push(rows[i-2].id.replace("RROW-", ""));
+                               if (i > 2) ids.push(rows[i-3].id.replace("RROW-", ""));
+
+                               if (i < rows.length-1) ids.push(rows[i+1].id.replace("RROW-", ""));
+                               if (i < rows.length-2) ids.push(rows[i+2].id.replace("RROW-", ""));
+                               if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", ""));
+
+                               return ids;
+                       }
+               }
+       }
+
+       return false;
+}
+
+function openArticleInNewWindow(id) {
+       try {
+
+               if (!xmlhttp_ready(xmlhttp_rpc)) {
+                       printLockingError();
+                       return
+               }
+
+               debug("openArticleInNewWindow: " + id);
+
+               var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
+
+               debug(query);
+
+               xmlhttp_rpc.open("GET", query, true);
+               xmlhttp_rpc.onreadystatechange=open_article_callback;
+               xmlhttp_rpc.send(null);
+
+       } catch (e) {
+               exception_error("openArticleInNewWindow", e);
+       }
+}
+