X-Git-Url: http://git.bytex64.net/?a=blobdiff_plain;f=www%2Fjs%2Fblerg.js;h=d0135b8abda05ff5591979b11c02b0253946704e;hb=36bef82c002dfa65064635cb8d3fae3660a6cde2;hp=1f413ad3a240de0d8dc8a3f2b83ea51b4a7d2c68;hpb=db45aeacb003f72b853abbccd6f722770732438b;p=blerg.git

diff --git a/www/js/blerg.js b/www/js/blerg.js
index 1f413ad..d0135b8 100644
--- a/www/js/blerg.js
+++ b/www/js/blerg.js
@@ -5,13 +5,13 @@
 // Config
 var baseURL = '';
 var recordTemplate = new Template(
-    '<div class="record">#{data}<div class="info">Posted #{date}</div></div>'
+    '<div class="record">#{data}<div class="info">Posted #{date}. <a href="/\##{author}/#{record}" onclick="return qlink()">[permalink]</a> <a href="#" onclick="postPopup(\'@#{author}/#{record}: \'); return false">[reply]</a></div></div>'
 );
 var tagRecordTemplate = new Template(
-    '<div class="record">#{data}<div class="info">Posted by <a class="author" href="/\##{author}">@#{author}</a> on #{date}</div></div>'
+    '<div class="record">#{data}<div class="info">Posted by <a class="author ref" href="/\##{author}" onclick="return qlink()">@#{author}</a> on #{date}. <a href="/\##{author}/#{record}" onclick="return qlink()">[permalink]</a> <a href="#" onclick="postPopup(\'@#{author}/#{record}: \'); return false">[reply]</a></div></div>'
 );
 var latestRecordsTemplate = new Template(
-    '<div class="record"><a class="author" href="/\##{author}">@#{author}</a> #{data}</div>'
+    '<div class="record"><a class="author ref" href="/\##{author}" onclick="return qlink()">@#{author}</a> #{data}</div>'
 );
 
 // Page elements
@@ -69,7 +69,7 @@ LoginStatus.prototype.logout = function() {
         parameters: {
             username: this.username
         },
-        onSuccess: function(r) {
+        onComplete: function(r) {
             this.loggedIn = false;
             document.cookie = "auth=; expires=1-Jan-1970 00:00:00 GMT";
             this.update();
@@ -82,7 +82,7 @@ LoginStatus.prototype.update = function() {
     if (this.loggedIn) {
         $('userlink').href = '/#' + this.username;
         $('userlink').update('@' + this.username);
-        $('reflink').href = '/#ref/' + this.username;
+        $('reflink').href = '/#/ref/' + this.username;
         $('login').hide();
         $('logout').show();
     } else {
@@ -108,12 +108,10 @@ LoginStatus.prototype.post = function(msg) {
             if (j && j.status == 'success') {
                 $('post.content').value = '';
                 if (location.hash != '#' + this.username) {
-                    location.href = '/#' + this.username;
-                    hashSwitch();
+                    qlink(this.username);
                 } else {
                     currentPager.itemCount++;
-                    currentPager.pageStart = null;
-                    currentPager.loadItems();
+                    currentPager.reload();
                 }
             } else {
                 alert('Post failed!');
@@ -129,24 +127,34 @@ LoginStatus.prototype.post = function(msg) {
 // Base object for paged data
 function Pager() {
     this.itemsPerPage = 10;
-}
-
-Pager.prototype.initPager = function() {
     this.itemCache = new Hash();
     this.pageStart = null;
 }
 
+Pager.prototype.updateState = function(m) {
+    return false;
+}
+
+Pager.prototype.show = function() {
+    items.show();
+}
+
+Pager.prototype.hide = function() {
+    items.hide();
+    items.update();
+    $('newer_link').hide();
+    $('older_link').hide();
+}
+
 Pager.prototype.olderPage = function() {
     if (this.pageStart >= this.itemsPerPage) {
-        this.pageStart -= this.itemsPerPage;
-        this.displayItems();
+        qlink(this.baseFrag + '/p' + (this.pageStart - this.itemsPerPage));
     }
 }
 
 Pager.prototype.newerPage = function() {
     if (this.pageStart + this.itemsPerPage < this.itemCount) {
-        this.pageStart += this.itemsPerPage;
-        this.displayItems();
+        qlink(this.baseFrag + '/p' + (this.pageStart + this.itemsPerPage));
     }
 }
 
@@ -171,50 +179,138 @@ Pager.prototype.displayItems = function() {
         items.insert("There doesn't seem to be anything here!");
     }
 
-    if (this.pageStart < this.itemCount - 1)
+    if (this.pageStart < this.itemCount - 1) {
+        $('newer_link').href = '/#' + this.baseFrag + '/p' + (this.pageStart + this.itemsPerPage);
         $('newer_link').show();
-    else
+    } else {
         $('newer_link').hide();
+    }
 
-    if (this.pageStart >= 10)
+    if (this.pageStart >= 10) {
+        $('older_link').href = '/#' + this.baseFrag + '/p' + (this.pageStart - this.itemsPerPage);
         $('older_link').show();
-    else
+    } else {
         $('older_link').hide();
+    }
+
+    document.body.scrollTo();
 }
 
+Pager.prototype.reload = function() {
+    this.pageStart = null;
+    this.loadItems(null, null, Pager.prototype.showPageAt.bind(this, this.itemCount - 1));
+}
 
-// Object to render user pages
-function User(username) {
-    this.initPager();
-    this.username = username;
+Pager.prototype.showPageAt = function(r) {
+    var end = (r - 9 > 0 ? r - 9 : 0);
+    if (this.itemCache[r] && this.itemCache[end]) {
+        this.pageStart = r;
+        this.displayItems();
+    } else {
+        this.loadItems((r >= 49 ? r - 49 : 0), r, Pager.prototype.showPageAt.bind(this, r));
+    }
+}
 
-    new Ajax.Request(baseURL + '/info/' + username, {
-        method: 'get',
-        onSuccess: function(r) {
-            var j = r.responseText.evalJSON();
-            if (j) {
-                this.itemCount = parseInt(j.record_count);
-                this.displayItems();
-            }
-        }.bind(this)
-    });
+Pager.prototype.showRecord = function(r) {
+    if (this.itemCache[r]) {
+        $('older_link').hide();
+        $('newer_link').hide();
+        items.update(this.itemCache[r].html);
+    } else {
+        this.loadItems(r, r, Pager.prototype.showRecord.bind(this, r));
+    }
+}
+
+Pager.prototype.loadItems = function(from, to, continuation) { }
+
+
+// Object to render user pages
+function User(m) {
+    Pager.call(this);
+    this.username = m[1];
+    this.baseFrag = m[1];
+    this.permalink = (m[2] != 'p');
+    this.pageStart = parseInt(m[3]);
 }
 User.prototype = new Pager();
 User.prototype.constructor = User;
 
+User.prototype.updateState = function(m) {
+    if (m[1] != this.username)
+        return false;
+    
+    this.permalink = (m[2] != 'p');
+    this.pageStart = parseInt(m[3]);
+    this.show();
+
+    return true;
+}
+
 User.prototype.show = function() {
+    Pager.prototype.show.call(this);
+
     $$('[name=section]').each(function(v) { v.update(' @' + this.username) }.bind(this));
-    $('welcome').hide();
-    items.show();
     $('rss').show();
     $('rsslink').href = '/rss/' + this.username;
     $$('[name=user.reflink]').each(function(e) {
-        e.href = '/#ref/' + this.username;
+        e.href = '/#/ref/' + this.username;
     }.bind(this));
     $('usercontrols').show();
+
+    if (this.permalink && this.pageStart) {
+        this.showRecord(this.pageStart);
+    } else if (this.pageStart) {
+        this.showPageAt(this.pageStart);
+    } else {
+        this.reload();
+    }
+}
+
+User.prototype.hide = function() {
+    Pager.prototype.hide.call(this);
+    $('signup').hide();
+    $('rss').hide();
+    $('usercontrols').hide();
+}
+
+User.prototype.reload = function() {
+    this.pageStart = null;
+
+    $$('[name=user.subscribelink]').each(Element.hide);
+    $$('[name=user.unsubscribelink]').each(Element.hide);
+
+    if (loginStatus.loggedIn) {
+        new Ajax.Request(baseURL + '/feedinfo/' + this.username, {
+            method: 'post',
+            parameters: {
+                username: loginStatus.username
+            },
+            onSuccess: function(r) {
+                var json = r.responseText.evalJSON();
+                if (json.subscribed) {
+                    $$('[name=user.subscribelink]').each(Element.hide);
+                    $$('[name=user.unsubscribelink]').each(Element.show);
+                } else {
+                    $$('[name=user.subscribelink]').each(Element.show);
+                    $$('[name=user.unsubscribelink]').each(Element.hide);
+                }
+            }
+        });
+    }
+
+    new Ajax.Request(baseURL + '/info/' + this.username, {
+        method: 'get',
+        onSuccess: function(r) {
+            var response = r.responseText.evalJSON();
+            if (response) {
+                this.itemCount = parseInt(response.record_count);
+                this.showPageAt(this.itemCount - 1);
+            }
+        }.bind(this)
+    });
 }
 
-User.prototype.loadItems = function(from, to) {
+User.prototype.loadItems = function(from, to, continuation) {
     var url;
     if (from != undefined && to != undefined) {
         url = baseURL + '/get/' + this.username + '/' + from + '-' + to;
@@ -230,13 +326,14 @@ User.prototype.loadItems = function(from, to) {
             if (records && records.length > 0) {
                 records.each(function(v) {
                     v.id = v.record;
+                    v.author = this.username;
                     mangleRecord(v, recordTemplate);
-                });
+                }.bind(this));
                 this.addItems(records);
                 if (!this.pageStart)
                     this.pageStart = records[0].recInt;
             }
-            this.displayItems();
+            continuation();
         }.bind(this),
         onFailure: function(r) {
             this.displayItems();
@@ -250,26 +347,92 @@ User.prototype.loadItems = function(from, to) {
 function mangleRecord(record, template) {
     record.recInt = parseInt(record.record);
 
-    // Sanitize HTML input
-    record.data = record.data.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+    var lines = record.data.split(/\r?\n/);
+    if (lines[lines.length - 1] == '')
+        lines.pop();
+
+    var out = ['<p>'];
+    var endpush = null;
+    var listMode = false;
+    lines.each(function(l) {
+        if (l == '') {
+            if (out[out.length - 1] == '<br>') {
+                out[out.length - 1] = '<p>';
+            }
+            if (out[out.length - 1] == '</li>') {
+                out.push('</ul>');
+                out.push('<p>');
+                listMode = false;
+            }
+            return;
+        }
+
+        // Put quoted material into a special paragraph
+        if (l[0] == '>') {
+            var pi = out.lastIndexOf('<p>');
+            if (pi != -1) {
+                out[pi] = '<p class="quote">';
+                l = l.replace(/^>\s*/, '');
+            }
+        }
 
-    // Turn HTTP URLs into links
-    record.data = record.data.replace(/(\s|^)(https?:\/\/[a-zA-Z0-9.-]*[a-zA-Z0-9](\/([^\s"]*[^.!,;?()\s])?)?)/g, '$1<a href="$2">$2</a>');
+        // Sanitize HTML input
+        l = l.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
 
-    // Turn markdown links into links
-    record.data = record.data.replace(/(\s|^)\[([^\]]+)\]\((https?:\/\/[a-zA-Z0-9.-]*[a-zA-Z0-9](\/[^)"]*?)?)\)/g, '$1<a href="$3">$2</a>');
+        // Turn HTTP URLs into links
+        l = l.replace(/(\s|^)(https?:\/\/[a-zA-Z0-9.-]*[a-zA-Z0-9](\/([^\s"]*[^.!,;?()\s])?)?)/g, '$1<a href="$2">$2</a>');
 
-    // Turn *foo* into italics and **foo** into bold
-    record.data = record.data.replace(/(\s)\*\*([^*]+)\*\*(\s)/g, '$1<b>$2</b>$3');
-    record.data = record.data.replace(/(\s)\*([^*]+)\*(\s)/g, '$1<i>$2</i>$3');
+        // Turn markdown links into links
+        l = l.replace(/(\s|^)\[([^\]]+)\]\((https?:\/\/[a-zA-Z0-9.-]*[a-zA-Z0-9](\/[^)"]*?)?)\)/g, '$1<a href="$3">$2</a>');
 
-    // Turn refs and tags into links
-    record.data = record.data.replace(/(\s|^)#([A-Za-z0-9_-]+)/g, '$1<a href="#tag/$2">#$2</a>');
-    record.data = record.data.replace(/(\s|^)@([A-Za-z0-9_-]+)/g, '$1<a href="#$2">@$2</a>');
+        // Turn *foo* into italics and **foo** into bold
+        l = l.replace(/([^\w\\]|^)\*\*(\w[^*]*)\*\*(\W|$)/g, '$1<b>$2</b>$3');
+        l = l.replace(/([^\w\\]|^)\*(\w[^*]*)\*(\W|$)/g, '$1<i>$2</i>$3');
 
-    // Turn newlines into linebreaks and paragraphs
-    record.data = record.data.replace(/\r?\n\r?\n/g, "<p>").replace(/\r?\n/g, "<br>");
+        // Turn refs and tags into links
+        l = l.replace(/(\s|^)#([A-Za-z0-9_-]+)/g, '$1<a href="#/tag/$2" class="ref" onclick="return qlink()">#$2</a>');
+        l = l.replace(/(\s|^)@([A-Za-z0-9_-]+)(\/\d+)?/g, '$1<a href="#$2$3" class="ref" onclick="return qlink()">@$2</a>');
+
+        // Create lists when lines begin with *
+        if (l[0] == '*') {
+            if (!listMode) {
+                var pi = out.lastIndexOf('<p>');
+                out[pi] = '<ul>';
+                listMode = true;
+            }
+            l = l.replace(/^\*\s*/, '');
+            out.push('<li>');
+            endpush = '</li>';
+        }
+
+        // Create headers when lines begin with = or #
+        if (l[0] == '=' || l[0] == '#') {
+            var m = l.match(/^([=#]+)/);
+            var depth = m[1].length;
+            if (depth <= 5) {
+                l = l.replace(/^[=#]+\s*/, '').replace(/\s*[=#]+$/, '');
+                out.push('<h' + depth + '>');
+                endpush = '</h' + depth + '>';
+            }
+        }
+
+        // Remove backslashes from escaped metachars
+        l = l.replace(/\\([*\[\]@#])/g, '$1');
+
+        out.push(l);
+        if (endpush) {
+            out.push(endpush);
+            endpush = null;
+        } else {
+            out.push('<br>');
+        }
+    });
+    while (out[out.length - 1] == '<br>' || out[out.length - 1] == '<p>')
+        out.pop();
+    if (listMode)
+        out.push('</ul>');
 
+    record.data = out.join('');
     record.date = (new Date(record.timestamp * 1000)).toString();
     record.html = template.evaluate(record);
 }
@@ -280,25 +443,28 @@ function displayError(msg) {
 
 
 // Object for browsing tags
-function Tag(type, tag) {
-    this.initPager();
-    this.type = type;
-    this.tag = tag;
+function Tag(m) {
+    Pager.call(this);
+    this.type = m[1];
+    this.tag = m[2];
+    this.pageStart = parseInt(m[3]);
 
     var url = baseURL + "/tag/";
-    switch(type) {
+    switch(this.type) {
     case 'tag':
         //url += '%23';
         url += 'H';  // apache is eating the hash, even encoded.  Probably a security feature.
+        this.baseFrag = '/tag/' + this.tag;
         break;
     case 'ref':
         url += '%40';
+        this.baseFrag = '/ref/' + this.tag;
         break;
     default:
-        alert('Invalid tag type: ' + type);
+        alert('Invalid tag type: ' + this.type);
         return;
     }
-    url += tag;
+    url += this.tag;
 
     new Ajax.Request(url, {
         method: 'get',
@@ -311,7 +477,9 @@ function Tag(type, tag) {
                     mangleRecord(v, tagRecordTemplate)
                 });
                 this.addItems(j);
-                this.pageStart = j.length - 1;
+                if (!this.pageStart)
+                    this.pageStart = j.length - 1;
+                this.itemCount = j.length;
             }
             this.displayItems();
         }.bind(this),
@@ -324,29 +492,87 @@ function Tag(type, tag) {
 Tag.prototype = new Pager();
 Tag.prototype.constructor = Tag;
 
+Tag.prototype.updateState = function(m) {
+    if (this.type != m[1] || this.tag != m[2])
+        return false;
+
+    this.pageStart = parseInt(m[3]) || this.itemCount - 1;
+    this.displayItems();
+
+    return true;
+}
+
 Tag.prototype.show = function() {
+    Pager.prototype.show.call(this);
+
     var ctype = {ref: '@', tag: '#'}[this.type];
 
     $$('[name=section]').each(function(v) {
         v.update(' about ' + ctype + this.tag);
     }.bind(this));
-    $('welcome').hide();
-    $('post').hide();
-    $('older_link').hide();
-    $('newer_link').hide();
-    $('rss').hide();
-    items.show();
-    $('usercontrols').hide();
 }
 
-function postPopup() {
-    if (loginStatus.loggedIn) {
+
+// Pager for browsing subscription feeds
+function Feed(m) {
+    Pager.call(this);
+    this.username = loginStatus.username;
+    this.baseFrag = '/feed';
+    this.pageStart = parseInt(m[1]);
+
+    new Ajax.Request(baseURL + '/feed', {
+        method: 'post',
+        parameters: {
+            username: loginStatus.username
+        },
+        onSuccess: function(r) {
+            var response = r.responseText.evalJSON();
+            if (response) {
+                var maxid = response.length - 1;
+                response.each(function(v, i) {
+                    v.id = maxid - i;
+                    mangleRecord(v, tagRecordTemplate)
+                });
+                this.addItems(response);
+                if (!this.pageStart)
+                    this.pageStart = response.length - 1;
+                this.itemCount = response.length;
+            }
+            this.displayItems();
+        }.bind(this),
+        onFailure: function(r) {
+            this.displayItems();
+        }.bind(this)
+    });
+}
+Feed.prototype = new Pager();
+Feed.prototype.constructor = Feed;
+
+Feed.prototype.updateState = function(m) {
+    this.pageStart = parseInt(m[1]) || this.itemCount - 1;
+    this.displayItems();
+
+    return true;
+}
+
+Feed.prototype.show = function() {
+    Pager.prototype.show.call(this);
+    $$('[name=section]').each(function(v) {
+        v.update(' ' + loginStatus.username + "'s spycam");
+    }.bind(this));
+}
+
+
+function postPopup(initial) {
+    if (loginStatus.loggedIn || initial) {
         var post = $('post');
         if (post.visible()) {
             post.hide();
         } else {
             post.show();
-            if (currentPager.username && currentPager.username != loginStatus.username && !$('post.content').value) {
+            if (initial) {
+                $('post.content').value = initial;
+            } else if (!$('post.content').value && currentPager.username && currentPager.username != loginStatus.username) {
                 $('post.content').value = '@' + currentPager.username + ': ';
             }
             $('post.content').focus();
@@ -365,8 +591,7 @@ function signup() {
         },
         onSuccess: function(r) {
             $('signup').hide();
-            location.href = '/#' + username;
-            hashSwitch();
+            qlink(username);
 
             loginStatus.login(username, password);
         },
@@ -378,17 +603,51 @@ function signup() {
 
 function signup_cancel() {
     $('signup').hide();
-    hashSwitch();
+    urlSwitch();
 }
 
-function newer_page() {
-    if (currentPager)
-        currentPager.newerPage();
+function subscribe() {
+    new Ajax.Request(baseURL + '/subscribe/' + currentPager.username, {
+        method: 'post',
+        parameters: {
+            username: loginStatus.username
+        },
+        onSuccess: function(r) {
+            var response = r.responseText.evalJSON();
+            if (response.status == 'success') {
+                alert("You call " + currentPager.username + " and begin breathing heavily into the handset.");
+                $$('[name=user.subscribelink]').each(Element.hide);
+                $$('[name=user.unsubscribelink]').each(Element.show);
+            } else {
+                alert('Failed to subscribe. This is probably for the best');
+            }
+        },
+        onFailure: function(r) {
+            alert('Failed to subscribe. This is probably for the best');
+        }
+    });
 }
 
-function older_page() {
-    if (currentPager)
-        currentPager.olderPage();
+function unsubscribe() {
+    new Ajax.Request(baseURL + '/unsubscribe/' + currentPager.username, {
+        method: 'post',
+        parameters: {
+            username: loginStatus.username
+        },
+        onSuccess: function(r) {
+            var response = r.responseText.evalJSON();
+            if (response.status == 'success') {
+                alert("You come to your senses.");
+                $$('[name=user.subscribelink]').each(Element.show);
+                $$('[name=user.unsubscribelink]').each(Element.hide);
+            } else {
+                alert('You are unable to tear yourself away (because something failed on the server)');
+            }
+        },
+        onFailure: function(r) {
+            alert('You are unable to tear yourself away (because something failed on the server)');
+        }
+    });
 }
 
 var resizePostContentTimeout = null;
@@ -425,9 +684,6 @@ function tickerFader(a, b, p) {
         b.hide();
 }
 
-function fadeOut(p) {
-}
-
 function ticker() {
     tickerHead.show();
     Bytex64.FX.run(tickerFader.curry(tickerHead, tickerTail), 0.5);
@@ -447,7 +703,7 @@ function startTicker() {
 
     // Show the first five
     tickerHead = $('latest-posts').firstChild;
-    for (var i = 0; i < 5 && tickerHead; i++) {
+    for (var i = 0; i < 10 && tickerHead; i++) {
         tickerHead.show();
         tickerHead = tickerHead.nextSibling;
     }
@@ -468,8 +724,10 @@ function loadLatest() {
 
             $('latest-tags').update();
             j.tags.each(function(v) {
-                var a = new Element('a', {href: '/#tag/' + v});
+                var a = new Element('a', {href: '/#/tag/' + v});
                 a.insert('#' + v);
+                a.onclick = "return qlink()";
+                a.className = 'ref';
                 $('latest-tags').insert(a);
                 $('latest-tags').appendChild(document.createTextNode(' '));
             });
@@ -486,52 +744,84 @@ function loadLatest() {
     });
 }
 
-function hashSwitch() {
-    var m;
+function qlink(loc) {
+    if (loc) {
+        location.hash = loc;
+    } else if (event && event.target) {
+        location.href = event.target.href;
+    } else {
+        // Bogus qlink
+        return;
+    }
+    lastHash = location.hash;
+    urlSwitch();
+    return false;
+}
+
+function Welcome() {
+    loadLatest();
+}
+
+Welcome.prototype.show = function() {
+    $$('[name=section]').each(function(v) { v.update('Welcome') });
+    $('welcome').show();
+}
+
+Welcome.prototype.hide = function() {
     stopTicker();
-    if (m = location.search.match(/^\?post\/([^/]+)\/(.+)/)) {
-        $('post').show();
-        $('post.content').value = '[' + decodeURIComponent(m[1]).replace(']','').replace('[','') + '](' + decodeURIComponent(m[2]) + ')';
-    } else if (m = location.hash.match(/^#(ref|tag)\/([A-Za-z0-9_-]+)$/)) {
-        currentPager = new Tag(m[1], m[2]);
-        currentPager.show();
-    } else if (m = location.hash.match(/^#([A-Za-z0-9_-]+)(:(\d+))?$/)) {
-        if (!currentPager || currentPager.username != m[1])
-            currentPager = new User(m[1]);
-        currentPager.show();
-        loginStatus.update();
+    $('welcome').hide();
+}
 
-        if (m[3]) {
-            var r = parseInt(m[3]);
-            currentPager.showRecord = r;
-            if (currentPager.recordCache[r]) {
-                currentPager.displayItems();
-            } else {
-                currentPager.loadItems((r >= 49 ? r - 49 : 0), r);
-            }
-        } else {
-            currentPager.pageStart = currentPager.itemCount - 1;
-            currentPager.loadItems();
+function ExternalURLPost(m) {
+    this.title = decodeURIComponent(m[1]).replace(']','').replace('[','');
+    this.url = decodeURIComponent(m[2]);
+}
+
+ExternalURLPost.prototype.show = function() {
+    $('post.content').value = '[' + this.title + '](' + this.url + ')';
+    $('post').show();
+}
+
+var urlmap = [
+    ['search', /^\?post\/([^/]+)\/(.+)/, ExternalURLPost],
+    ['hash',   /^#\/(ref|tag)\/([A-Za-z0-9_-]+)(?:\/p(\d+))?$/, Tag],
+    ['hash',   /^#\/feed(?:\/p(\d+))?$/, Feed],
+    ['hash',   /^#([A-Za-z0-9_-]+)(?:\/(p)?(\d+))?$/, User]
+];
+
+function urlSwitch() {
+    var m;
+    var pageconstructor;
+
+    for (var i = 0; i < urlmap.length; i++) {
+        if (m = location[urlmap[i][0]].match(urlmap[i][1])) {
+            pageconstructor = urlmap[i][2];
+            break;
         }
-    } else {
-        $$('[name=section]').each(function(v) { v.update('Welcome') });
-        $('signup').hide();
-        items.update();
-        items.hide();
-        $('newer_link').hide();
-        $('older_link').hide();
-        $('welcome').show();
-        $('rss').hide();
-        $('usercontrols').hide();
-        loadLatest();
     }
+    if (i == urlmap.length)
+        pageconstructor = Welcome;
+
+    if (currentPager && currentPager instanceof pageconstructor) {
+        // updateState returns true if the state has been successfully updated.
+        // Otherwise, we continue and create a new instance.
+        if (currentPager.updateState(m))
+            return;
+    }
+
+    if (currentPager && currentPager.hide)
+        currentPager.hide();
+
+    currentPager = new pageconstructor(m);
+    if (currentPager.show)
+        currentPager.show();
 }
 
 var lastHash;
 function hashCheck() {
     if (location.hash != lastHash) {
         lastHash = location.hash;
-        hashSwitch();
+        urlSwitch();
     }
 }
 
@@ -540,12 +830,12 @@ function init() {
     loginStatus = new LoginStatus();
 
     lastHash = location.hash;
-    hashSwitch();
+    urlSwitch();
 
     setInterval(hashCheck, 250);
 
     document.body.observe('keyup', function(event) {
-        if (event.shiftKey && event.keyCode == '32') {
+        if (event.shiftKey && event.keyCode == 32) {
             postPopup();
             event.stop();
         }