]> git.wh0rd.org - tt-rss.git/blobdiff - functions.js
quick unsubscribe prompt shows feed name
[tt-rss.git] / functions.js
index c4d79e51779deb8aea71a5b29bd13eec45cdf07c..f7e29888847cf84292fce92404c86b78b8fe2156 100644 (file)
@@ -1,5 +1,31 @@
 var hotkeys_enabled = true;
 
+var xmlhttp_rpc = Ajax.getTransport();
+
+function browser_has_opacity() {
+       return navigator.userAgent.match("Gecko") != null || 
+               navigator.userAgent.match("Opera") != null;
+}
+
+function exception_error(location, e) {
+       var msg;
+
+       if (e.fileName) {
+               var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
+       
+               msg = "Exception: " + e.name + ", " + e.message + 
+                       "\nFunction: " + location + "()" +
+                       "\nLocation: " + base_fname + ":" + e.lineNumber;
+               
+       } else {
+               msg = "Exception: " + e + "\nFunction: " + location + "()";
+       }
+
+       debug("<b>EXCEPTION: " + msg + "</b>");
+
+       alert(msg);
+}
+
 function disableHotkeys() {
        hotkeys_enabled = false;
 }
@@ -12,7 +38,6 @@ function xmlhttp_ready(obj) {
        return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
 }
 
-
 function notify_callback() {
        var container = document.getElementById('notify');
        if (xmlhttp.readyState == 4) {
@@ -50,37 +75,75 @@ function delay(gap) {
        }
 }
 
-function p_notify(msg) {
-
-       var n = parent.document.getElementById("notify");
-       var nb = parent.document.getElementById("notify_body");
+var notify_hide_timerid = false;
+var notify_last_doc = false;
 
-       if (!n || !nb) return;
+var notify_effect = false;
 
-       if (msg == "") {
-               nb.innerHTML = "&nbsp;";
-               n.style.background = "#ffffff";
-       } else {
-               nb.innerHTML = msg;
-               n.style.background = "#fffff0";
+function hide_notify() {
+       if (notify_last_doc) {
+               var n = notify_last_doc.getElementById("notify");               
+               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(msg) {
+function notify_real(msg, doc, no_hide, is_err) {
 
-       var n = document.getElementById("notify");
-       var nb = document.getElementById("notify_body");
+       var n = doc.getElementById("notify");
+       var nb = doc.getElementById("notify_body");
 
        if (!n || !nb) return;
 
+       if (notify_hide_timerid) {
+               window.clearTimeout(notify_hide_timerid);
+       }
+
+       notify_last_doc = doc;
+       notify_opacity = 1;
+
        if (msg == "") {
-               nb.innerHTML = "&nbsp;";
-               n.style.background = "#ffffff";
+               if (n.style.display == "block") {
+                       notify_hide_timerid = window.setTimeout("hide_notify()", 0);
+               }
+               return;
+       } else {
+               n.style.display = "block";
+       }
+
+       if (is_err) {
+               n.style.backgroundColor = "#ffcccc";
+               n.style.color = "black";
+               n.style.borderColor = "#ff0000";
        } else {
-               nb.innerHTML = msg;
-               n.style.background = "#fffff0";
+               n.style.backgroundColor = "#fff7d5";
+               n.style.borderColor = "#d7c47a";
+               n.style.color = "black";
        }
 
+       nb.innerHTML = msg;
+
+       if (!no_hide) {
+               notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
+       }
+}
+
+function p_notify(msg, no_hide, is_err) {
+       notify_real(msg, parent.document, no_hide, is_err);
+}
+
+function notify(msg, no_hide, is_err) {
+       notify_real(msg, document, no_hide, is_err);
 }
 
 function printLockingError() {
@@ -90,47 +153,112 @@ var seq = "";
 
 function hotkey_handler(e) {
 
-       var keycode;
-
-       if (!hotkeys_enabled) return;
-
-       if (window.event) {
-               keycode = window.event.keyCode;
-       } else if (e) {
-               keycode = e.which;
-       }
-
-       if (keycode == 13 || keycode == 27) {
-               seq = "";
-       } else {
-               seq = seq + "" + keycode;
-       }
-
-       var piggie = document.getElementById("piggie");
-
-       if (piggie) {
+       try {
 
-               if (seq.match("807371717369")) {
-                       localPiggieFunction(true);
+               var keycode;
+       
+               if (!hotkeys_enabled) return;
+       
+               if (window.event) {
+                       keycode = window.event.keyCode;
+               } else if (e) {
+                       keycode = e.which;
+               }
+       
+               if (keycode == 13 || keycode == 27) {
+                       seq = "";
                } else {
-                       localPiggieFunction(false);
+                       seq = seq + "" + keycode;
                }
-       }
        
-       if (typeof localHotkeyHandler != 'undefined') {
-               localHotkeyHandler(keycode);
-       }
+               var m_ctx = getMainContext();
+               var f_ctx = getFeedsContext();
+               var h_ctx = getHeadlinesContext();
+       
+               if (keycode == 82) { // r
+                       return m_ctx.scheduleFeedUpdate(true);
+               }
+       
+               if (keycode == 85) { // u
+                       if (getActiveFeedId()) {
+                               return f_ctx.viewfeed(getActiveFeedId(), 0, "ForceUpdate");
+                       }
+               }
+       
+               if (keycode == 65) { // a
+                       return m_ctx.toggleDispRead();
+               }
+       
+               var f_doc = m_ctx.frames["feeds-frame"].document;
+               var feedlist = f_doc.getElementById('feedList');
+       
+               if (keycode == 74) { // j
+                       var feed = getActiveFeedId();
+                       var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
+                       if (new_feed) viewfeed(new_feed, 0, '');
+               }
+       
+               if (keycode == 75) { // k
+                       var feed = getActiveFeedId();
+                       var new_feed = getRelativeFeedId(feedlist, feed, 'next');
+                       if (new_feed) viewfeed(new_feed, 0, '');
+               }
 
+               if (keycode == 78 || keycode == 40) { // n, down
+                       return h_ctx.moveToPost('next');
+               }
+       
+               if (keycode == 80 || keycode == 38) { // p, up
+                       return h_ctx.moveToPost('prev');
+               } 
+       
+               if (document.getElementById("piggie")) {
+       
+                       if (seq.match("807371717369")) {
+                               seq = "";
+                               localPiggieFunction(true);
+                       } else {
+                               localPiggieFunction(false);
+                       }
+               }
+               
+               if (typeof localHotkeyHandler != 'undefined') {
+                       try {
+                               localHotkeyHandler(keycode);
+                       } catch (e) {
+                               exception_error("hotkey_handler, local:", e);
+                       }
+               }
+       } catch (e) {
+               exception_error("hotkey_handler", e);
+       }
 }
 
 function cleanSelectedList(element) {
        var content = document.getElementById(element);
 
-       for (i = 0; i < content.childNodes.length; i++) {
-               content.childNodes[i].className = 
-                       content.childNodes[i].className.replace("Selected", "");
+       if (!document.getElementById("feedCatHolder")) {
+               for (i = 0; i < content.childNodes.length; i++) {
+                       var child = content.childNodes[i];
+                       try {
+                               child.className = child.className.replace("Selected", "");
+                       } catch (e) {
+                               //
+                       }
+               }
+       } else {
+               for (i = 0; i < content.childNodes.length; i++) {
+                       var child = content.childNodes[i];
+                       if (child.id == "feedCatHolder") {
+                               parent.debug(child.id);
+                               var fcat = child.lastChild;
+                               for (j = 0; j < fcat.childNodes.length; j++) {
+                                       var feed = fcat.childNodes[j];
+                                       feed.className = feed.className.replace("Selected", "");
+                               }               
+                       }
+               } 
        }
-
 }
 
 
@@ -140,7 +268,6 @@ function cleanSelected(element) {
        for (i = 0; i < content.rows.length; i++) {
                content.rows[i].className = content.rows[i].className.replace("Selected", "");
        }
-
 }
 
 function getVisibleUnreadHeadlines() {
@@ -185,7 +312,27 @@ function getLastVisibleHeadlineId() {
 function markHeadline(id) {
        var row = document.getElementById("RROW-" + id);
        if (row) {
-               row.className = row.className + "Selected";
+               var is_active = false;
+       
+               if (row.className.match("Active")) {
+                       is_active = true;
+               }
+               row.className = row.className.replace("Selected", "");
+               row.className = row.className.replace("Active", "");
+               row.className = row.className.replace("Insensitive", "");
+               
+               if (is_active) {
+                       row.className = row.className = "Active";
+               }
+               
+               var check = document.getElementById("RCHK-" + id);
+
+               if (check) {
+                       check.checked = true;
+               }
+
+               row.className = row.className + "Selected"; 
+               
        }
 }
 
@@ -204,7 +351,20 @@ function getFeedIds() {
        return rows;
 }
 
-function setCookie(name, value, expires, path, domain, secure) {
+function setCookie(name, value, lifetime, path, domain, secure) {
+       
+       var d = false;
+       
+       if (lifetime) {
+               d = new Date();
+               d.setTime(lifetime * 1000);
+       }
+       
+       int_setCookie(name, value, d, path, domain, secure);
+
+}
+
+function int_setCookie(name, value, expires, path, domain, secure) {
        document.cookie= name + "=" + escape(value) +
                ((expires) ? "; expires=" + expires.toGMTString() : "") +
                ((path) ? "; path=" + path : "") +
@@ -212,6 +372,16 @@ function setCookie(name, value, expires, path, domain, secure) {
                ((secure) ? "; secure" : "");
 }
 
+function delCookie(name, path, domain) {
+       if (getCookie(name)) {
+               document.cookie = name + "=" +
+               ((path) ? ";path=" + path : "") +
+               ((domain) ? ";domain=" + domain : "" ) +
+               ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
+       }
+}
+               
+
 function getCookie(name) {
 
        var dc = document.cookie;
@@ -237,6 +407,11 @@ function disableContainerChildren(id, disable, doc) {
 
        var container = doc.getElementById(id);
 
+       if (!container) {
+               //alert("disableContainerChildren: element " + id + " not found");
+               return;
+       }
+
        for (var i = 0; i < container.childNodes.length; i++) {
                var child = container.childNodes[i];
 
@@ -272,62 +447,107 @@ function gotoExportOpml() {
 }
 
 function getActiveFeedId() {
-       return getCookie("ttrss_vf_actfeed");
+//     return getCookie("ttrss_vf_actfeed");
+       try {
+               debug("gAFID: " + getMainContext().active_feed_id);
+               return getMainContext().active_feed_id;
+       } catch (e) {
+               exception_error("getActiveFeedId", e);
+       }
 }
 
 function setActiveFeedId(id) {
-       return setCookie("ttrss_vf_actfeed", id);
-}
-
-var xmlhttp_rpc = false;
-
-/*@cc_on @*/
-/*@if (@_jscript_version >= 5)
-// JScript gives us Conditional compilation, we can cope with old IE versions.
-// and security blocked creation of the objects.
-try {
-       xmlhttp_rpc = new ActiveXObject("Msxml2.XMLHTTP");
-} catch (e) {
+//     return setCookie("ttrss_vf_actfeed", id);
        try {
-               xmlhttp_rpc = new ActiveXObject("Microsoft.XMLHTTP");
-       } catch (E) {
-               xmlhttp_rpc = false;
+               getMainContext().active_feed_id = id;
+       } catch (e) {
+               exception_error("setActiveFeedId", e);
        }
 }
-@end @*/
-
-if (!xmlhttp_rpc && typeof XMLHttpRequest!='undefined') {
-       xmlhttp_rpc = new XMLHttpRequest();
-}
 
-function label_counters_callback() {
-       if (xmlhttp_rpc.readyState == 4) {
+function parse_counters(reply, scheduled_call) {
+       try {
+               var f_document = getFeedsContext().document;
+               var title_obj = getMainContext();
 
-               if (!xmlhttp_rpc.responseXML) {
-                       notify("label_counters_callback: backend did not return valid XML");
-                       return;
+               if (reply.firstChild && reply.firstChild.firstChild) {
+                       debug("<b>wrong element passed to parse_counters, adjusting.</b>");
+                       reply = reply.firstChild;
                }
 
-               var reply = xmlhttp_rpc.responseXML.firstChild;
-
-               var f_document = parent.frames["feeds-frame"].document;
+               debug("F_DOC: " + f_document + ", T_OBJ: " + title_obj);
 
                for (var l = 0; l < reply.childNodes.length; l++) {
+                       if (!reply.childNodes[l] ||
+                               typeof(reply.childNodes[l].getAttribute) == "undefined") {
+                               // where did this come from?
+                               continue;
+                       }
+
                        var id = reply.childNodes[l].getAttribute("id");
+                       var t = reply.childNodes[l].getAttribute("type");
                        var ctr = reply.childNodes[l].getAttribute("counter");
-
+                       var error = reply.childNodes[l].getAttribute("error");
+                       var has_img = reply.childNodes[l].getAttribute("hi");
+                       var updated = reply.childNodes[l].getAttribute("updated");
+       
+                       if (id == "global-unread") {
+                               title_obj.global_unread = ctr;
+                               title_obj.updateTitle();
+                               continue;
+                       }
+       
+                       if (t == "category") {
+                               var catctr = f_document.getElementById("FCATCTR-" + id);
+                               if (catctr) {
+                                       catctr.innerHTML = "(" + ctr + " unread)";
+                               }
+                               continue;
+                       }
+               
                        var feedctr = f_document.getElementById("FEEDCTR-" + id);
                        var feedu = f_document.getElementById("FEEDU-" + id);
                        var feedr = f_document.getElementById("FEEDR-" + id);
+                       var feed_img = f_document.getElementById("FIMG-" + id);
+                       var feedlink = f_document.getElementById("FEEDL-" + id);
+
+                       if (updated && feedlink) {
+                               if (error) {
+                                       feedlink.title = "Error: " + error + " (" + updated + ")";
+                               } else {
+                                       feedlink.title = "Updated: " + updated;
+                               }
+                       }
 
                        if (feedctr && feedu && feedr) {
 
+                               if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
+                                       var hf = title_obj.parent.frames["headlines-frame"];
+                                       hf.location.reload(true);
+                               }
+               
                                feedu.innerHTML = ctr;
+
+                               if (error) {
+                                       feedr.className = feedr.className.replace("feed", "error");
+                               } else if (id > 0) {
+                                       feedr.className = feedr.className.replace("error", "feed");
+                               }
        
-                               if (ctr > 0) {
+                               if (ctr > 0) {                                  
                                        feedctr.className = "odd";
                                        if (!feedr.className.match("Unread")) {
+                                               var is_selected = feedr.className.match("Selected");
+               
+                                               feedr.className = feedr.className.replace("Selected", "");
+                                               feedr.className = feedr.className.replace("Unread", "");
+               
                                                feedr.className = feedr.className + "Unread";
+               
+                                               if (is_selected) {
+                                                       feedr.className = feedr.className + "Selected";
+                                               }
+               
                                        }
                                } else {
                                        feedctr.className = "invisible";
@@ -335,10 +555,32 @@ function label_counters_callback() {
                                }                       
                        }
                }
+       } catch (e) {
+               exception_error("parse_counters", e);
+       }
+}
+
+function all_counters_callback() {
+       if (xmlhttp_rpc.readyState == 4) {
+               try {
+                       if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
+                               notify("[all_counters_callback] backend did not return valid XML");
+                               return;
+                       }
+
+                       var reply = xmlhttp_rpc.responseXML.firstChild;
+
+                       var counters = reply.firstChild;
+
+                       parse_counters(counters);
+       
+               } catch (e) {
+                       exception_error("all_counters_callback", e);
+               }
        }
 }
 
-function update_label_counters(feed) {
+function update_all_counters(feed) {
        if (xmlhttp_ready(xmlhttp_rpc)) {
                var query = "backend.php?op=rpc&subop=getAllCounters";
 
@@ -347,7 +589,7 @@ function update_label_counters(feed) {
                }
 
                xmlhttp_rpc.open("GET", query, true);
-               xmlhttp_rpc.onreadystatechange=label_counters_callback;
+               xmlhttp_rpc.onreadystatechange=all_counters_callback;
                xmlhttp_rpc.send(null);
        }
 }
@@ -394,8 +636,12 @@ function popupHelp(tid) {
 
 function hideOrShowFeeds(doc, hide) {
 
+       if (!doc.styleSheets) return;
+
        var css_rules = doc.styleSheets[0].cssRules;
 
+       if (!css_rules || !css_rules.length) return;
+
        for (i = 0; i < css_rules.length; i++) {
                var rule = css_rules[i];
 
@@ -411,7 +657,536 @@ function hideOrShowFeeds(doc, hide) {
 
 }
 
-function fatalError(code) {
-       window.location = "error.php?c=" + param_escape(code);
+function selectTableRow(r, do_select) {
+       r.className = r.className.replace("Selected", "");
+       
+       if (do_select) {
+               r.className = r.className + "Selected";
+       }
+}
+
+function selectTableRowById(elem_id, check_id, do_select) {
+
+       try {
+
+               var row = document.getElementById(elem_id);
+
+               if (row) {
+                       selectTableRow(row, do_select);
+               }               
+
+               var check = document.getElementById(check_id);
+
+               if (check) {
+                       check.checked = do_select;
+               }
+       } catch (e) {
+               exception_error("selectTableRowById", e);
+       }
+}
+
+function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select, 
+       classcheck, reset_others) {
+
+       var content = document.getElementById(content_id);
+
+       if (!content) {
+               alert("[selectTableRows] Element " + content_id + " not found.");
+               return;
+       }
+
+       for (i = 0; i < content.rows.length; i++) {
+               if (!classcheck || content.rows[i].className.match(classcheck)) {
+       
+                       if (content.rows[i].id.match(prefix)) {
+                               selectTableRow(content.rows[i], do_select);
+                       
+                               var row_id = content.rows[i].id.replace(prefix, "");
+                               var check = document.getElementById(check_prefix + row_id);
+
+                               if (check) {
+                                       check.checked = do_select;
+                               }
+                       } else if (reset_others) {
+                               selectTableRow(content.rows[i], false);
+
+                               var row_id = content.rows[i].id.replace(prefix, "");
+                               var check = document.getElementById(check_prefix + row_id);
+
+                               if (check) {
+                                       check.checked = false;
+                               }
+
+                       }
+               } else if (reset_others) {
+                       selectTableRow(content.rows[i], false);
+
+                       var row_id = content.rows[i].id.replace(prefix, "");
+                       var check = document.getElementById(check_prefix + row_id);
+
+                       if (check) {
+                               check.checked = false;
+                       }
+
+               }
+       }
+}
+
+function getSelectedTableRowIds(content_id, prefix) {
+
+       var content = document.getElementById(content_id);
+
+       if (!content) {
+               alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
+               return;
+       }
+
+       var sel_rows = new Array();
+
+       for (i = 0; i < content.rows.length; i++) {
+               if (content.rows[i].id.match(prefix) && 
+                               content.rows[i].className.match("Selected")) {
+                               
+                       var row_id = content.rows[i].id.replace(prefix + "-", "");
+                       sel_rows.push(row_id);  
+               }
+       }
+
+       return sel_rows;
+
+}
+
+function toggleSelectRowById(sender, id) {
+       var row = document.getElementById(id);
+
+       if (sender.checked) {
+               if (!row.className.match("Selected")) {
+                       row.className = row.className + "Selected";
+               }
+       } else {
+               if (row.className.match("Selected")) {
+                       row.className = row.className.replace("Selected", "");
+               }
+       }
+}
+
+function toggleSelectListRow(sender) {
+       var parent_row = sender.parentNode;
+
+       if (sender.checked) {
+               if (!parent_row.className.match("Selected")) {
+                       parent_row.className = parent_row.className + "Selected";
+               }
+       } else {
+               if (parent_row.className.match("Selected")) {
+                       parent_row.className = parent_row.className.replace("Selected", "");
+               }
+       }
+}
+
+
+function toggleSelectRow(sender) {
+       var parent_row = sender.parentNode.parentNode;
+
+       if (sender.checked) {
+               if (!parent_row.className.match("Selected")) {
+                       parent_row.className = parent_row.className + "Selected";
+               }
+       } else {
+               if (parent_row.className.match("Selected")) {
+                       parent_row.className = parent_row.className.replace("Selected", "");
+               }
+       }
+}
+
+function openExternalUrl(url) {
+       var w = window.open(url);
+}
+
+function getRelativeFeedId(list, id, direction, unread_only) { 
+       if (!id) {
+               if (direction == "next") {
+                       for (i = 0; i < list.childNodes.length; i++) {
+                               var child = list.childNodes[i];
+                               if (child.id && child.id == "feedCatHolder") {
+                                       if (child.lastChild) {
+                                               var cr = getRelativeFeedId(child.firstChild, id, direction);
+                                               if (cr) return cr;                                      
+                                       }
+                               } else if (child.id && child.id.match("FEEDR-")) {
+                                       return child.id.replace('FEEDR-', '');
+                               }                               
+                       }
+               }
+
+               // FIXME select last feed doesn't work when only unread feeds are visible
+
+               if (direction == "prev") {
+                       for (i = list.childNodes.length-1; i >= 0; i--) {
+                               var child = list.childNodes[i];                         
+                               if (child.id == "feedCatHolder") {
+                                       if (child.firstChild) {
+                                               var cr = getRelativeFeedId(child.firstChild, id, direction);
+                                               if (cr) return cr;                                      
+                                       }
+                               } else if (child.id.match("FEEDR-")) {
+                               
+                                       if (getInitParam("hide_read_feeds") == 1) {
+                                               if (child.className != "feed") {
+                                                       alert(child.className);
+                                                       return child.id.replace('FEEDR-', '');                                          
+                                               }                                                       
+                                       } else {
+                                                       return child.id.replace('FEEDR-', '');                                          
+                                       }                               
+                               }                               
+                       }
+               }
+       } else {
+       
+               var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
+               
+               if (getInitParam("hide_read_feeds") == 1) {
+                       unread_only = true;
+               }
+
+               if (direction == "next") {
+
+                       var e = feed;
+
+                       while (e) {
+
+                               if (e.nextSibling) {
+                               
+                                       e = e.nextSibling;
+                                       
+                               } else if (e.parentNode.parentNode.nextSibling) {
+
+                                       var this_cat = e.parentNode.parentNode;
+
+                                       e = false;
+
+                                       if (this_cat && this_cat.nextSibling) {
+                                               while (!e && this_cat.nextSibling) {
+                                                       this_cat = this_cat.nextSibling;
+                                                       if (this_cat.id == "feedCatHolder") {
+                                                               e = this_cat.firstChild.firstChild;
+                                                       }
+                                               }
+                                       }
+
+                               } else {
+                                       e = false;
+                          }
+
+                               if (e) {
+                                       if (!unread_only || (unread_only && e.className != "feed" && 
+                                                       e.className != "error"))        {
+                                               return e.id.replace("FEEDR-", "");
+                                       }
+                               }
+                       }
+                       
+               } else if (direction == "prev") {
+
+                       var e = feed;
+
+                       while (e) {
+
+                               if (e.previousSibling) {
+                               
+                                       e = e.previousSibling;
+                                       
+                               } else if (e.parentNode.parentNode.previousSibling) {
+
+                                       var this_cat = e.parentNode.parentNode;
+
+                                       e = false;
+
+                                       if (this_cat && this_cat.previousSibling) {
+                                               while (!e && this_cat.previousSibling) {
+                                                       this_cat = this_cat.previousSibling;
+                                                       if (this_cat.id == "feedCatHolder") {
+                                                               e = this_cat.firstChild.lastChild;
+                                                       }
+                                               }
+                                       }
+
+                               } else {
+                                       e = false;
+                          }
+
+                               if (e) {
+                                       if (!unread_only || (unread_only && e.className != "feed" && 
+                                                       e.className != "error"))        {
+                                               return e.id.replace("FEEDR-", "");
+                                       }
+                               }
+                       }
+               }
+       }
+}
+
+function showBlockElement(id) {
+       var elem = document.getElementById(id);
+
+       if (elem) {
+               elem.style.display = "block";
+       } else {
+               alert("[showBlockElement] can't find element with id " + id);
+       } 
+}
+
+function hideParentElement(e) {
+       e.parentNode.style.display = "none";
+}
+
+function dropboxSelect(e, v) {
+       for (i = 0; i < e.length; i++) {
+               if (e[i].value == v) {
+                       e.selectedIndex = i;
+                       break;
+               }
+       }
+}
+
+// originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
+// bugfixed just a little bit :-)
+function getURLParam(strParamName){
+  var strReturn = "";
+  var strHref = window.location.href;
+
+  if (strHref.indexOf("#") == strHref.length-1) {
+               strHref = strHref.substring(0, strHref.length-1);
+  }
+
+  if ( strHref.indexOf("?") > -1 ){
+    var strQueryString = strHref.substr(strHref.indexOf("?"));
+    var aQueryString = strQueryString.split("&");
+    for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
+      if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
+        var aParam = aQueryString[iParam].split("=");
+        strReturn = aParam[1];
+        break;
+      }
+    }
+  }
+  return strReturn;
+} 
+
+function leading_zero(p) {
+       var s = String(p);
+       if (s.length == 1) s = "0" + s;
+       return s;
+}
+
+function closeInfoBox(cleanup) {
+       var box = document.getElementById('infoBox');
+       var shadow = document.getElementById('infoBoxShadow');
+
+       if (shadow) {
+               shadow.style.display = "none";
+       } else if (box) {
+               box.style.display = "none";
+       }
+
+       if (cleanup) box.innerHTML = "&nbsp;";
+
+       enableHotkeys();
 
 }
+
+
+function displayDlg(id, param) {
+
+       if (!xmlhttp_ready(xmlhttp)) {
+               printLockingError();
+               return
+       }
+
+       notify("");
+
+       xmlhttp.open("GET", "backend.php?op=dlg&id=" +
+               param_escape(id) + "&param=" + param_escape(param), true);
+       xmlhttp.onreadystatechange=infobox_callback;
+       xmlhttp.send(null);
+
+       disableHotkeys();
+
+}
+
+function infobox_submit_callback() {
+       if (xmlhttp.readyState == 4) {
+               closeInfoBox();
+
+               // called from prefs, reload tab
+               if (active_tab) {
+                       selectTab(active_tab, false);
+               }
+
+               notify(xmlhttp.responseText);
+
+       } 
+}
+
+function infobox_callback() {
+       if (xmlhttp.readyState == 4) {
+               var box = document.getElementById('infoBox');
+               var shadow = document.getElementById('infoBoxShadow');
+               if (box) {                      
+                       box.innerHTML=xmlhttp.responseText;                     
+                       if (shadow) {
+                               shadow.style.display = "block";
+                       } else {
+                               box.style.display = "block";                            
+                       }
+               }
+       }
+}
+
+function qaddFilter() {
+
+       if (!xmlhttp_ready(xmlhttp)) {
+               printLockingError();
+               return
+       }
+
+       var query = Form.serialize("filter_add_form");
+
+       xmlhttp.open("GET", "backend.php?" + query, true);
+       xmlhttp.onreadystatechange=infobox_submit_callback;
+       xmlhttp.send(null);
+
+       return true;
+}
+
+function toggleSubmitNotEmpty(e, submit_id) {
+       try {
+               document.getElementById(submit_id).disabled = (e.value == "")
+       } catch (e) {
+               exception_error("toggleSubmitNotEmpty", e);
+       }
+}
+
+function isValidURL(s) {
+       return s.match("http://") != null || s.match("https://") != null;
+}
+
+function qafAdd() {
+
+       if (!xmlhttp_ready(xmlhttp)) {
+               printLockingError();
+               return
+       }
+
+       notify("Adding feed...");
+
+       closeInfoBox();
+
+       var feeds_doc = getFeedsContext().document;
+
+       feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
+       
+       var query = Form.serialize("feed_add_form");
+       
+       xmlhttp.open("GET", "backend.php?" + query, true);
+       xmlhttp.onreadystatechange=dlg_frefresh_callback;
+       xmlhttp.send(null);
+}
+
+function filterCR(e)
+{
+     var key;
+
+     if(window.event)
+          key = window.event.keyCode;     //IE
+     else
+          key = e.which;     //firefox
+
+     if(key == 13)
+          return false;
+     else
+          return true;
+}
+
+function getMainContext() {
+       if (parent.window != window) {
+               return parent.window;
+       } else {
+               return this.window;
+       }
+}
+
+function getFeedsContext() {
+       try {
+               return getMainContext().frames["feeds-frame"];
+       } catch (e) {
+               exception_error("getFeedsContext", e);
+       }
+}
+
+
+function getHeadlinesContext() {
+       try {
+               return getMainContext().frames["headlines-frame"];
+       } catch (e) {
+               exception_error("getHeadlinesContext", e);
+       }
+}
+
+function debug(msg) {
+       var ctx = getMainContext();
+
+       var c = ctx.document.getElementById('debug_output');
+       if (c && c.style.display == "block") {
+               while (c.lastChild != 'undefined' && c.childNodes.length > 20) {
+                       c.removeChild(c.lastChild);
+               }
+       
+               var d = new Date();
+               var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
+                       ":" + leading_zero(d.getSeconds());
+               c.innerHTML = "<li>[" + ts + "] " + msg + "</li>" + c.innerHTML;
+       }
+}
+
+function getInitParam(key) {
+       return getMainContext().init_params[key];
+}
+
+// TODO: batch mode
+function storeInitParam(key, value, is_client) {
+       try {
+               getMainContext().init_params[key] = value;
+               if (!is_client) {
+                       new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" + 
+                               param_escape(key) + "&value=" + param_escape(value));   
+               }
+       } catch (e) {
+               exception_error("storeInitParam", e);
+       }
+}
+
+function fatalError(code, message) {
+       try {   
+               var fe = document.getElementById("fatal_error");
+               var fc = document.getElementById("fatal_error_msg");
+
+               fc.innerHTML = "Code " + code + ": " + message;
+
+               fe.style.display = "block";
+
+       } catch (e) {
+               exception_error("fatalError", e);
+       }
+}
+
+function getFeedName(id) {
+       var d = getFeedsContext().document;
+       var e = d.getElementById("FEEDN-" + id);
+       if (e) {
+               return e.innerHTML.stripTags();
+       } else {
+               return null;
+       }
+}