Working on analysis of bug-page-mod module.

* Add some notes
* remove getBugNumber and replaced with my getBugNo.

1 files changed, 986 insertions, 0 deletions

diff --git a/data/lib/bug-page-mod.js b/data/lib/bug-page-mod.js
new file mode 100644
index 0000000..0da1553
--- /dev/null
+++ b/data/lib/bug-page-mod.js
@@ -0,0 +1,986 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Bugzilla Tweaks.
+ *
+ * The Initial Developer of the Original Code is Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Johnathan Nightingale <johnath@mozilla.com>
+ *   Ehsan Akhgari <ehsan@mozilla.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+function tweakBugzilla(d) {
+    // run on both bugzilla.m.o and bugzilla-stage-tip.m.o
+    if (!onBugzillaPage(d.URL))
+        return;
+
+    // Put the quicksearch text in the quicksearch boxes
+    quicksearchHandler(d);
+
+    if (!d.getElementById("comments")) // don't process the mid-air collision pages
+      return;
+
+    // Make the comment box bigger ... TODO not necessary on RH BZ, but doesn't hurt
+    var commentBox = d.getElementById("comment");
+    if (commentBox)
+        commentBox.rows=20;
+
+    addNewLinks(d);
+
+    attachmentDiffLinkify(d);
+
+    viewAttachmentSource(d);
+
+    // Mark up history along right hand edge
+    // TODO ... not sure what does this mean ... this
+    // <link> element is I suppose everywhere.
+    var historyLink = d.querySelector("link[title='Bug Activity']");
+    if (!historyLink)
+        return;
+
+    // Add our own style for bugzilla-tweaks
+    var style = d.createElement("style");
+    style.setAttribute("type", "text/css");
+    style.appendChild(d.createTextNode(
+        ".bztw_history { border: none; font-weight: normal; width: 58em; margin-left: 5em; }" +
+        ".bztw_inlinehistory { font-weight: normal; width: 56em; }" +
+        ".bztw_history .old, .bztw_inlinehistory .old { text-decoration: line-through; }" +
+        ".bztw_history .sep:before { content: \" \"; }" +
+        ".bztw_unconfirmed { font-style: italic; }" +
+        "tr.bz_tr_obsolete.bztw_plusflag { display: table-row !important; }" +
+        '.bztw_historyitem + .bztw_historyitem:before { content: "; "; }'
+    ));
+    d.getElementsByTagName("head")[0].appendChild(style);
+    style = d.createElement("style");
+    style.setAttribute("type", "text/css");
+    style.id = "bztw_cc";
+    style.appendChild(d.createTextNode(
+        ".bztw_cc { display: none; }" +
+        '.bztw_historyitem.bztw_cc + .bztw_historyitem:before { content: ""; }' +
+        '.bztw_historyitem:not([class~="bztw_cc"]) ~ .bztw_historyitem.bztw_cc + .bztw_historyitem:before { content: "; "; }'
+    ));
+    d.getElementsByTagName("head")[0].appendChild(style);
+
+    var userNameCache = {};
+    function getUserName(email) {
+        if (email in userNameCache) {
+            return userNameCache[email];
+        }
+        var emailLink = d.querySelectorAll("a.email");
+        for (var i = 0; i < emailLink.length; ++i) {
+            if (emailLink[i].href == "mailto:" + email) {
+                return userNameCache[email] = htmlEncode(trimContent(emailLink[i]));
+            }
+        }
+        return email;
+    }
+
+    // collect the flag names
+    var flagNames = [], flags = {}, flagOccurrences = {};
+    var flagRows = d.querySelectorAll("#flags tr");
+    for (var i = 0; i < flagRows.length; ++i) {
+        var item = flagRows[i].querySelectorAll("td");
+        if (!item[1])
+            continue;
+        var name = trimContent(item[1]).replace('\u2011', '-', 'g');
+        flagNames.push(name);
+        flags[name] = item[1];
+    }
+    flagRows = d.querySelectorAll(".field_label[id^=field_label_cf_]");
+    for (var i = 0; i < flagRows.length; ++i) {
+        var name = trimContent(flagRows[i]).replace(/\:$/, '')
+                                           .replace('\u2011', '-', 'g');
+        flagNames.push(name);
+        flags[name] = flagRows[i];
+    }
+    var flagCounter = 1;
+    function findFlag(item) {
+        function lookup(name) {
+            name = name.replace('\u2011', '-', 'g');
+            for (var i = 0; i < flagNames.length; ++i) {
+                var quotedFlagName = flagNames[i].replace('.', '\\.', 'g')
+                                                 .replace('\u2011', '-', 'g');
+                if ((new RegExp('^' + quotedFlagName)).test(name)) {
+                    return [flagNames[i]];
+                }
+            }
+            return [];
+        }
+        var base = item[4] ? 2 : 0;
+        // handle normal flags
+        if (trimContent(item[base]) == 'Flag') {
+            var result = [];
+            var tmp = lookup(trimContent(item[base + 1]));
+            if (tmp.length) {
+                result.push(tmp[0]);
+            }
+            tmp = lookup(trimContent(item[base + 2]));
+            if (tmp.length) {
+                result.push(tmp[0]);
+            }
+            return result;
+        }
+        // handle special pseudo-flags
+        return lookup(trimContent(item[base]));
+    }
+
+    var DataStore = new DataStoreCtor(d);
+
+    var AttachmentFlagHandler = new AttachmentFlagHandlerCtor();
+    AttachmentFlagHandler.determineInterestingFlags(d);
+
+    var CheckinComment = new CheckinCommentCtor();
+    CheckinComment.initialize(d, AttachmentFlagHandler._interestingFlags);
+
+    var iframe = d.createElement('iframe');
+    iframe.src = historyLink.href;
+    iframe.style.display = "none";
+    iframe.addEventListener("load", function() {
+        preprocessDuplicateMarkers(d, iframe.contentDocument);
+
+        var historyItems = iframe.contentDocument.querySelectorAll('#bugzilla-body tr');
+        var commentTimes = d.querySelectorAll('.bz_comment_time');
+
+        // Sometimes the history will stack several changes together,
+        // and we'll want to append the data from the Nth item to the
+        // div created in N-1
+        var i=0, j=0, flagsFound;
+        for (; i < historyItems.length; i++) {
+            var item = historyItems[i].querySelectorAll("td");
+            if (!item[1])
+                continue;
+
+            var reachedEnd = false;
+            for (; j < commentTimes.length; j++) {
+                if (trimContent(item[1]) > trimContent(commentTimes[j])) {
+                    if (j < commentTimes.length - 1) {
+                        continue;
+                    } else {
+                        reachedEnd = true;
+                    }
+                }
+
+                var commentHead = commentTimes[j].parentNode;
+
+                var mainUser = commentHead.querySelector(".bz_comment_user a.email")
+                                          .href
+                                          .substr(7);
+                var user = trimContent(item[0]);
+                var mainTime = trimContent(commentTimes[j]);
+                var time = trimContent(item[1]);
+                var inline = (mainUser == user && time == mainTime);
+
+                var currentDiv = d.createElement("div");
+                var userPrefix = '';
+                if (inline) {
+                    // assume that the change was made by the same user
+                    commentHead.appendChild(currentDiv);
+                    currentDiv.setAttribute("class", "bztw_inlinehistory");
+                } else {
+                    // the change was made by another user
+                    if (!reachedEnd) {
+                        var parentDiv = commentHead.parentNode;
+                        if (parentDiv.previousElementSibling &&
+                            parentDiv.previousElementSibling.className.indexOf("bztw_history") >= 0) {
+                            currentDiv = parentDiv.previousElementSibling;
+                        } else {
+                            parentDiv.parentNode.insertBefore(currentDiv, parentDiv);
+                        }
+                    } else {
+                        var parentDiv = commentHead.parentNode;
+                        if (parentDiv.nextElementSibling &&
+                            parentDiv.nextElementSibling.className.indexOf("bztw_history") >= 0) {
+                            currentDiv = parentDiv.nextElementSibling;
+                        } else {
+                            parentDiv.parentNode.appendChild(currentDiv);
+                        }
+                    }
+                    currentDiv.setAttribute("class", "bz_comment bztw_history");
+                    userPrefix += "<a class=\"email\" href=\"mailto:" +
+                                  htmlEncode(trimContent(item[0])) + "\" title=\"" +
+                                  htmlEncode(trimContent(item[1])) +"\">" +
+                                  getUserName(trimContent(item[0])) + "</a>: ";
+                }
+                // check to see if this is a flag setting
+                flagsFound = findFlag(item);
+                for (var idx = 0; idx < flagsFound.length; ++idx) {
+                    var flag = flagsFound[idx];
+                    flagOccurrences[flag] = 'flag' + flagCounter;
+                    if (inline) {
+                        var anchor = d.createElement("a");
+                        anchor.setAttribute("name", "flag" + flagCounter);
+                        commentHead.insertBefore(anchor, commentHead.firstChild);
+                    } else {
+                        userPrefix += '<a name="flag' + flagCounter + '"></a>';
+                    }
+                    ++flagCounter;
+                }
+
+                var attachmentFlagAnchors = AttachmentFlagHandler.handleItem(user, item);
+                if (inline) {
+                    for (var idx = 0; idx < attachmentFlagAnchors.length; ++idx) {
+                        var anchor = d.createElement("a");
+                        anchor.setAttribute("name", attachmentFlagAnchors[idx]);
+                        commentHead.insertBefore(anchor, commentHead.firstChild);
+                    }
+                } else {
+                    userPrefix += attachmentFlagAnchors.map(function(name) '<a name="' + name + '"></a>').join("");
+                }
+
+                var ccOnly = (trimContent(item[2]) == 'CC');
+                var ccPrefix = ccOnly ? '<span class="bztw_cc bztw_historyitem">' :
+                                        '<span class="bztw_historyitem">',
+                    ccSuffix = '</span>';
+                var html = userPrefix +
+                           ccPrefix +
+                           transformType(trimContent(item[2]), d, trimContent(item[3]),
+                                         trimContent(item[4])) + ": " +
+                           formatTransition(trimContent(item[3]), trimContent(item[4]),
+                                            trimContent(item[2]), d, iframe.contentDocument);
+
+                var nextItemsCount = item[0].rowSpan;
+                for (var k = 1; k < nextItemsCount; ++k) {
+                    ccOnly = false;
+                    item = historyItems[++i].querySelectorAll("td")
+                    ccPrefix = (trimContent(item[0]) == 'CC') ?
+                        '<span class="bztw_cc bztw_historyitem">' : '<span class="bztw_historyitem">';
+                    // avoid showing a trailing semicolon if the previous entry wasn't a CC and this one is
+                    var prefix = ccSuffix + ccPrefix;
+                    // check to see if this is a flag setting
+                    flagsFound = findFlag(item);
+                    for (var idx = 0; idx < flagsFound.length; ++idx) {
+                        var flag = flagsFound[idx];
+                        flagOccurrences[flag] = 'flag' + flagCounter;
+                        if (inline) {
+                            var anchor = d.createElement("a");
+                            anchor.setAttribute("name", "flag" + flagCounter);
+                            commentHead.insertBefore(anchor, commentHead.firstChild);
+                        } else {
+                            prefix += '<a name="flag' + flagCounter + '"></a>';
+                        }
+                        ++flagCounter;
+                    }
+
+                    var attachmentFlagAnchors = AttachmentFlagHandler.handleItem(user, item);
+                    if (inline) {
+                        for (var idx = 0; idx < attachmentFlagAnchors.length; ++idx) {
+                            var anchor = d.createElement("a");
+                            anchor.setAttribute("name", attachmentFlagAnchors[idx]);
+                            commentHead.insertBefore(anchor, commentHead.firstChild);
+                        }
+                    } else {
+                        prefix += attachmentFlagAnchors.map(function(name) '<a name="' + name + '"></a>').join("");
+                    }
+
+                    html += prefix +
+                            transformType(trimContent(item[0]), d, trimContent(item[1]),
+                                          trimContent(item[2])) + ": " +
+                            formatTransition(trimContent(item[1]), trimContent(item[2]),
+                                             trimContent(item[0]), d, iframe.contentDocument);
+                }
+                html += ccSuffix;
+                if (ccOnly) {
+                    html = '<div class="bztw_cc">' + html + '</div>';
+                } else {
+                    html = '<div>' + html + '</div>';
+                }
+                currentDiv.innerHTML += html;
+                break;
+            }
+        }
+
+        handleEmptyCollapsedBoxes(d);
+
+        // Set the latest flag links if necessary
+        for (var flagName in flagOccurrences) {
+            flags[flagName].innerHTML = '<a href="#' + flagOccurrences[flagName] + '">'
+                + flags[flagName].innerHTML + '</a>';
+        }
+
+        AttachmentFlagHandler.setupLinks(d);
+    },true);
+    d.body.appendChild(iframe);
+
+    tbplbotSpamCollapser(d);
+}
+
+var TransformValues = {
+    linkifyURLs: function (str) {
+        return str.replace(/((https?|ftp)\:\/\/[\S]+)/g, '<a href="$1">$1</a>');
+    },
+    linkifyBugAndCommentNumbers: function (str) {
+        return str.replace(/(bug )(\d+) (comment )(\d+)/gi, '<a href="show_bug.cgi?id=$2#c$4">$1\n$2 $3\n$4</a>');
+    },
+    linkifyCommentNumbers: function (str) {
+        return str.replace(/(comment (\d+))/gi, '<a href="#c$2">$1</a>');
+    },
+    linkifyBugNumbers: function (str) {
+        return str.replace(/(bug (\d+))/gi, '<a href="show_bug.cgi?id=$2">$1</a>');
+    },
+    linkifyDependencies: function (str, type, doc, histDoc) {
+        switch (type) {
+        case "Blocks":
+        case "Depends on":
+        case "Duplicate":
+            str = str.replace(/\d+/g, function(str) {
+                var link = histDoc.querySelector("a[href='show_bug.cgi?id=" + str + "']");
+                if (link) {
+                    var class_ = '';
+                    if (/bz_closed/i.test(link.className)) {
+                        class_ += 'bz_closed ';
+                    } else if (/bztw_unconfirmed/i.test(link.className)) {
+                        class_ += 'bztw_unconfirmed ';
+                    }
+                    var parent = link.parentNode;
+                    if (parent) {
+                        if (parent.tagName.toLowerCase() == "i") {
+                            class_ += 'bztw_unconfirmed ';
+                        }
+                        if (/bz_closed/i.test(parent.className)) {
+                            class_ += 'bz_closed ';
+                        }
+                    }
+                    str = applyClass(class_,
+                                     '<a title="' + htmlEncode(link.title) + '" href="show_bug.cgi?id=' + htmlEncode(str) + '"' +
+                                     (link.hasAttribute("name") ? (' name="' + htmlEncode(link.getAttribute("name")) + '"') : '') +
+                                     '>' + htmlEncode(str) + '</a>');
+                }
+                return str;
+            });
+        }
+        return str;
+    }
+};
+
+function transform(str, type, doc, histDoc) {
+    for (var funcname in TransformValues) {
+        var func = TransformValues[funcname];
+        str = func.call(null, str, type, doc, histDoc);
+    }
+    return str
+}
+
+var TransformTypes = {
+    linkifyAttachments: function (str, doc) {
+        return str.replace(/(Attachment #(\d+))/g, function (str, x, id) {
+            var link = doc.querySelector("a[href='attachment.cgi?id=" + id + "']");
+            if (link) {
+                var class_ = '';
+                if (/bz_obsolete/i.test(link.className)) {
+                    class_ += 'bz_obsolete ';
+                }
+                var parent = link.parentNode;
+                if (parent && /bz_obsolete/i.test(parent.className)) {
+                    class_ += 'bz_obsolete ';
+                }
+                if (link.querySelector(".bz_obsolete")) {
+                    class_ += 'bz_obsolete ';
+                }
+                str = applyClass(class_,
+                                 '<a title="' + htmlEncode(trimContent(link)) + '" href="attachment.cgi?id=' +
+                                 htmlEncode(id) + '&action=edit">' + htmlEncode(str) + '</a>');
+            }
+            return str;
+        });
+    },
+    changeDependencyLinkTitles: function (str, doc, old, new_) {
+        switch (str) {
+        case "Blocks":
+        case "Depends on":
+            if (old.length && !new_.length) { // if the dependency was removed
+                str = "No longer " + str[0].toLowerCase() + str.substr(1);
+            }
+            break;
+        }
+        return str;
+    }
+};
+
+function transformType(str, doc, old, new_) {
+    for (var funcname in TransformTypes) {
+        var func = TransformTypes[funcname];
+        str = func.call(null, str, doc, old, new_);
+    }
+    return str;
+}
+
+// new is a keyword, which makes this function uglier than I'd like
+function formatTransition(old, new_, type, doc, histDoc) {
+    if (old.length) {
+        old = transform(htmlEncode(old), type, doc, histDoc);
+        var setOldStyle = true;
+        switch (type) {
+        case "Blocks":
+        case "Depends on":
+            setOldStyle = false;
+            break;
+        }
+        if (setOldStyle) {
+            old = '<span class="old">' + old + '</span>';
+        }
+    }
+    if (new_.length) {
+        new_ = '<span class="new">' + transform(htmlEncode(new_), type, doc, histDoc) + '</span>';
+    }
+    var mid = '';
+    if (old.length && new_.length) {
+        mid = ' <span style="font-size: 150%;">&rArr;</span> ';
+    }
+    return old + mid + new_;
+}
+
+function trimContent(el) {
+    return el.textContent.trim();
+}
+
+function AttachmentFlag(flag) {
+    for (var name in flag)
+        this[name] = flag[name];
+}
+AttachmentFlag.prototype = {
+    equals: function(flag) {
+        if (this.type != flag.type ||
+            this.name != flag.name ||
+            this.setter != flag.setter ||
+            ("requestee" in this && !("requestee" in flag)) ||
+            ("requestee" in flag && !("requestee" in this)))
+            return false;
+        return this.requestee == flag.requestee;
+    }
+};
+
+var reAttachmentDiff = /attachment\.cgi\?id=(\d+)&action=diff$/i;
+var reviewBoardUrlBase = "http://reviews.visophyte.org/";
+
+/**
+ * Whenever we find a patch with a diff, insert an additional link to asuth's
+ * review board magic.
+ */
+function attachmentDiffLinkify(doc) {
+  var bug_id = getBugNo(doc);
+
+  var table = doc.getElementById("attachment_table");
+  if (!table)
+    return;
+  var rows = table.querySelectorAll("tr");
+  for (var i = 0; i < rows.length; ++i) {
+    var item = rows[i].querySelectorAll("td");
+    if (item.length != 3)
+      continue;
+    // get the ID of the attachment
+    var links = item[2].querySelectorAll("a");
+    if (links.length != 2)
+      continue;
+    var match = reAttachmentDiff.exec(links[1].href);
+    if (match) {
+      var attach_id = match[1];
+      var parentNode = links[1].parentNode;
+      parentNode.appendChild(doc.createTextNode(" | "));
+      var linkNode = doc.createElement("a");
+      linkNode.href = reviewBoardUrlBase + "r/bzpatch/bug" + bug_id + "/attach" + attach_id + "/";
+      linkNode.textContent = "Review";
+      parentNode.appendChild(linkNode);
+    }
+  }
+}
+
+function quicksearchHandler(doc) {
+  var win = doc.defaultView;
+  var match = /quicksearch=([^&]+)/i.exec(win.location.search);
+  if (match) {
+    var quicksearch = unescape(match[1].replace('+', ' ', 'g'));
+    var quicksearchBox = doc.querySelectorAll("input[name=quicksearch]");
+    if (quicksearchBox) {
+      for (var i = 0; i < quicksearchBox.length; ++i) {
+        quicksearchBox[i].value = quicksearch;
+      }
+    }
+  }
+}
+
+function AttachmentFlagHandlerCtor() {
+    this._db = {};
+    this._interestingFlags = {};
+}
+AttachmentFlagHandlerCtor.prototype = {
+    determineInterestingFlags: function (doc) {
+        var table = doc.getElementById("attachment_table");
+        if (!table)
+            return;
+        var rows = table.querySelectorAll("tr");
+        for (var i = 0; i < rows.length; ++i) {
+            var item = rows[i].querySelectorAll("td");
+            if (item.length != 3 ||
+                item[1].className.indexOf("bz_attach_flags") < 0 ||
+                trimContent(item[1]) == "no flags")
+                continue;
+            // get the ID of the attachment
+            var link = item[0].querySelector("a");
+            if (!link)
+                continue;
+            var match = this._reAttachmentHref.exec(link.href);
+            if (match) {
+                var attachmentID = match[1];
+                if (!(attachmentID in this._interestingFlags)) {
+                    this._interestingFlags[attachmentID] = [];
+                }
+                for (var el = item[1].firstChild; el.nextSibling; el = el.nextSibling) {
+                    if (el.nodeType != el.TEXT_NODE)
+                        continue;
+                    var text = trimContent(el).replace('\u2011', '-', 'g');
+                    if (!text)
+                        continue;
+                    match = this._reParseInterestingFlag.exec(text);
+                    if (match) {
+                        var flag = {};
+                        flag.setter = match[1];
+                        flag.name = match[2];
+                        if (match[4] == "+" || match[4] == "-") {
+                            flag.type = match[4];
+                        } else {
+                            flag.type = "?";
+                            if (match[7]) {
+                                flag.requestee = match[7];
+                            }
+                        }
+
+                        // always show the obsolete attachments with a + flag
+                        if (flag.type == "+") {
+                            var parent = link.parentNode;
+                            while (parent) {
+                                if (parent.tagName.toLowerCase() == "tr") {
+                                    if (/bz_tr_obsolete/i.test(parent.className)) {
+                                        parent.className += " bztw_plusflag";
+                                    }
+                                    break;
+                                }
+                                parent = parent.parentNode;
+                            }
+                        }
+
+                        // try to put the flag name and type part in a span which we will
+                        // use in setupLinks to inject links into.
+                        match = this._reLinkifyInterestingFlag.exec(text);
+                        if (match) {
+                            el.textContent = match[1];
+                            if (match[3]) {
+                                var textNode = doc.createTextNode(match[3]);
+                                el.parentNode.insertBefore(textNode, el.nextSibling);
+                            }
+                            var span = doc.createElement("span");
+                            span.textContent = match[2];
+                            el.parentNode.insertBefore(span, el.nextSibling);
+
+                            flag.placeholder = span;
+                        }
+
+                        this._interestingFlags[attachmentID].push(new AttachmentFlag(flag));
+                    }
+                }
+            }
+        }
+    },
+    handleItem: function (name, item) {
+        var anchorsCreated = [];
+        var base = item[4] ? 2 : 0;
+        var what = trimContent(item[base]);
+        var match = this._reAttachmentFlagName.exec(what);
+        if (match) {
+            var id = match[1];
+            if (!(id in this._db)) {
+                this._db[id] = [];
+            }
+            name = name.split('@')[0]; // convert the name to the fraction before the @
+            var added = this._parseData(name, trimContent(item[base + 2]));
+            for (var i = 0; i < added.length; ++i) {
+                var flag = added[i];
+                if (!(id in this._interestingFlags))
+                    continue;
+                for (var j = 0; j < this._interestingFlags[id].length; ++j) {
+                    if (flag.equals(this._interestingFlags[id][j])) {
+                        // found an interesting flag
+                        this._interestingFlags[id][j].anchor = this.anchorName;
+                        anchorsCreated.push(this.anchorName);
+                        this._counter++;
+                        break;
+                    }
+                }
+            }
+        }
+        return anchorsCreated;
+    },
+    setupLinks: function (doc) {
+        for (var id in this._interestingFlags) {
+            for (var i = 0; i < this._interestingFlags[id].length; ++i) {
+                var flag = this._interestingFlags[id][i];
+                if ("placeholder" in flag &&
+                    "anchor" in flag) {
+                    var link = doc.createElement("a");
+                    link.href = "#" + flag.anchor;
+                    link.textContent = flag.placeholder.textContent;
+                    flag.placeholder.replaceChild(link, flag.placeholder.firstChild);
+                }
+            }
+        }
+    },
+    _parseData: function (name, str) {
+        var items = str.replace('\u2011', '-', 'g').split(', '), flags = [];
+        for (var i = 0; i < items.length; ++i) {
+            if (!items[i].length)
+                continue;
+
+            var match = this._reParseRequest.exec(items[i]);
+            if (match) {
+                var flag = {};
+                flag.name = match[1];
+                flag.setter = name;
+                if (match[4]) {
+                    flag.requestee = match[4];
+                }
+                flag.type = match[2];
+                flags.push(new AttachmentFlag(flag));
+            }
+        }
+        return flags;
+    },
+    _counter: 1,
+    get anchorName() {
+        return "attachflag" + this._counter;
+    },
+    _reParseRequest: /^(.+)([\?\-\+])(\((.+)@.+\))?$/,
+    _reParseInterestingFlag: /^(.+):\s+(.+)(([\-\+])|\?(\s+(\((.+)\)))?)$/,
+    _reLinkifyInterestingFlag: /^(.+:\s+)(.+[\-\+\?])(\s+\(.+\))?$/,
+    _reAttachmentHref: /attachment\.cgi\?id=(\d+)$/i,
+    _reAttachmentFlagName: /^Attachment\s+#(\d+)\s+Flags$/i
+};
+
+function CheckinCommentCtor() {
+    this.bugNumber = null;
+    this.summarySpan = null;
+    this.checkinFlags = "";
+}
+CheckinCommentCtor.prototype = {
+  initialize: function(doc, flags) {
+    this.bugNumber = getBugNo(doc);
+    var summarySpan = doc.getElementById("short_desc_nonedit_display");
+    if (summarySpan) {
+        this.summary = summarySpan.textContent;
+    }
+    var checkinFlagsMap = {};
+    for (var id in flags) {
+        for (var i = 0; i < flags[id].length; ++i) {
+            var flag = flags[id][i];
+            if (flag.type == "+") {
+                var name = flag.name;
+                if (name == "review") {
+                    name = "r";
+                } else if (name == "superreview") {
+                    name = "sr";
+                } else if (name == "ui-review") {
+                    name = "ui-r";
+                } else if (name == "feedback") {
+                    name = "f";
+                }
+                if (!(name in checkinFlagsMap)) {
+                    checkinFlagsMap[name] = {};
+                }
+                checkinFlagsMap[name][flag.setter]++;
+            }
+        }
+    }
+    var flagsOrdered = [];
+    for (var name in checkinFlagsMap) {
+        flagsOrdered.push(name);
+    }
+    flagsOrdered.sort(function (a, b) {
+        function convertToNumber(x) {
+            switch (x) {
+            case "f":
+                return -4;
+            case "r":
+                return -3;
+            case "sr":
+                return -2;
+            case "ui-r":
+                return -1;
+            default:
+                return 0;
+            }
+        }
+        var an = convertToNumber(a);
+        var bn = convertToNumber(b);
+        if (an == 0 && bn == 0) {
+            return a < b ? -1 : (a = b ? 0 : 1);
+        } else {
+            return an - bn;
+        }
+    });
+    var checkinFlags = [];
+    for (var i = 0; i < flagsOrdered.length; ++i) {
+        var name = flagsOrdered[i];
+        var flag = name + "=";
+        var setters = [];
+        for (var setter in checkinFlagsMap[name]) {
+            setters.push(setter);
+        }
+        flag += setters.join(",");
+        checkinFlags.push(flag);
+    }
+    this.checkinFlags = checkinFlags.join(" ");
+    if (this.isValid()) {
+      var div = doc.createElement("div");
+      div.setAttribute("style", "display: none;");
+      div.id = "__bz_tw_checkin_comment";
+      div.appendChild(doc.createTextNode(this.toString()));
+      doc.body.appendChild(div);
+    }
+  },
+  isValid: function() {
+      return this.bugNumber != null &&
+             this.summary != null;
+  },
+  toString: function() {
+    if (!this.isValid()) {
+        return "";
+    }
+    var message = "Bug " + this.bugNumber + " - " + this.summary;
+    if (this.checkinFlags.length) {
+        message += "; " + this.checkinFlags;
+    }
+    return message;
+  }
+};
+
+function DataStoreCtor(doc) {
+  this.storage = doc.defaultView.localStorage;
+  this.data = {};
+  this.bugNumber = null;
+  function visualizeStoredData() {
+    var data = "";
+    for (var i = 0; i < window.localStorage.length; ++i) {
+      var key = window.localStorage.key(i);
+      data += key + ": " + JSON.parse(window.localStorage.getItem(key).toString()).toSource() + "\n";
+    }
+    open("data:text/html,<pre>" + escape(htmlEncode(data)) + "</pre>");
+  }
+  function clearStoredData() {
+    var count = window.localStorage.length;
+    if (count > 0) {
+      if (window.confirm("You currently have data stored for " + count + " bugs.\n\n" +
+                         "Are you sure you want to clear this data?  This action cannot be undone.")) {
+        window.localStorage.clear();
+      }
+    } else {
+      alert("You don't have any data stored about your bugs");
+    }
+  }
+  var script = doc.createElement("script");
+  script.appendChild(doc.createTextNode(visualizeStoredData.toSource() +
+                                        clearStoredData.toSource() +
+                                        htmlEncode.toSource()));
+  doc.body.appendChild(script);
+  this.initialize(doc);
+}
+
+DataStoreCtor.prototype = {
+  initialize: function(doc) {
+    this.bugNumber = getBugNo(doc);
+    var data = this._ensureEntry(this.bugNumber, this.data);
+    // last visited date
+    data.visitedTime = (new Date()).getTime();
+    // last comment count
+    data.commentCount = doc.querySelectorAll(".bz_comment").length;
+    // last status of bug flags
+    var flags = this._ensureEntry("flags", data);
+    var flagRows = doc.querySelectorAll("#flags tr");
+    for (var i = 0; i < flagRows.length; ++i) {
+      var flagCols = flagRows[i].querySelectorAll("td");
+      if (flagCols.length != 3) {
+        continue;
+      }
+      var flagName = trimContent(flagCols[1]);
+      var flagValue = flagCols[2].querySelector("select");
+      if (flagValue) {
+        flagValue = flagValue.value;
+      } else {
+        continue;
+      }
+      flags[flagName] = flagValue;
+    }
+    flagRows = doc.querySelectorAll(".field_label[id^=field_label_cf_]");
+    for (var i = 0; i < flagRows.length; ++i) {
+      var flagName = trimContent(flagRows[i]).replace(/:$/, "");
+      var flagValue = flagRows[i].parentNode.querySelector("select");
+      if (flagValue) {
+        flagValue = flagValue.value;
+      } else {
+        continue;
+      }
+      flags[flagName] = flagValue;
+    }
+    // last attachments
+    var attachmentTable = doc.getElementById("attachment_table");
+    var attachmentRows = attachmentTable.querySelectorAll("tr");
+    for (var i = 0; i < attachmentRows.length; ++i) {
+      var attachmentCells = attachmentRows[i].querySelectorAll("td");
+      if (attachmentCells.length != 3) {
+        continue;
+      }
+      var link = attachmentCells[0].querySelector("a");
+      var match = this._reAttachmentHref.exec(link.href);
+      if (match) {
+        var attachmentID = match[1];
+        var attachment = this._ensureEntry("attachments", data);
+        var attachmentFlags = this._ensureArray(attachmentID, attachment);
+        for (var el = attachmentCells[1].firstChild; el.nextSibling; el = el.nextSibling) {
+          if (el.nodeType != el.TEXT_NODE) {
+            continue;
+          }
+          var text = trimContent(el);
+          if (!text) {
+            continue;
+          }
+          match = this._reParseInterestingFlag.exec(text);
+          if (match) {
+            var flag = {};
+            flag.setter = match[1];
+            flag.name = match[2];
+            if (match[4] == "+" || match[4] == "-") {
+                flag.type = match[4];
+            } else {
+                flag.type = "?";
+                if (match[7]) {
+                    flag.requestee = match[7];
+                }
+            }
+            attachmentFlags.push(flag);
+          }
+        }
+      }
+    }
+    // Write data to storage
+    for (var key in this.data) {
+      this._ensure(key, this.storage, JSON.stringify(this.data[key]));
+    }
+  },
+  _ensure: function(entry, obj, val) {
+    if (obj.toString().indexOf("[object Storage") >= 0) {
+      obj.setItem(entry, val);
+    } else {
+      if (typeof obj[entry] == "undefined")
+        obj[entry]  = val;
+      return obj[entry];
+    }
+  },
+  _ensureEntry: function(entry, obj) {
+    return this._ensure(entry, obj, {});
+  },
+  _ensureArray: function(entry, obj) {
+    return this._ensure(entry, obj, []);
+  },
+  _reParseInterestingFlag: /^(.+):\s+(.+)(([\-\+])|\?(\s+(\((.+)\)))?)$/,
+  _reAttachmentHref: /attachment\.cgi\?id=(\d+)$/i
+};
+
+
+function getUserName(doc) {
+  var links = doc.querySelectorAll("#header .links li");
+  var last = links[links.length - 1];
+  if (last.innerHTML.indexOf("logout") >= 0) {
+    return trimContent(last.lastChild);
+  }
+  return null;
+}
+
+function handleEmptyCollapsedBoxes(doc) {
+    // first, try to get the display style of a CC field (any would do)
+    var historyBoxes = doc.querySelectorAll(".bztw_history");
+    for (var i = 0; i < historyBoxes.length; ++i) {
+        var box = historyBoxes[i];
+        for (var j = 0; j < box.childNodes.length; ++j) {
+            var child = box.childNodes[j], found = true;
+            if (child.nodeType != child.ELEMENT_NODE)
+                continue;
+            if (child.className == "sep") {
+                // separators are insignificant
+                continue;
+            } else if (!/bztw_cc/.test(child.className)) {
+                found = false;
+                break;
+            }
+        }
+        if (found) {
+            box.className += " bztw_cc";
+        }
+    }
+}
+
+function applyClass(class_, html) {
+    return '<span class="' + class_ + '">' + html + '</span>';
+}
+
+function htmlEncode(str) {
+    return str.replace('&', '&amp;', 'g')
+              .replace('<', '&lt;', 'g')
+              .replace('>', '&gt;', 'g')
+              .replace('"', '&quot;', 'g');
+}
+
+function tbplbotSpamCollapser(d) {
+  var collapseExpandBox = d.querySelector(".bz_collapse_expand_comments");
+  if (!collapseExpandBox) {
+    return;
+  }
+  var a = d.createElement("a");
+  a.href = "#";
+  a.addEventListener("click", function(e) {
+    e.preventDefault();
+    var win = d.defaultView.wrappedJSObject;
+    var comments = d.querySelectorAll(".bz_comment");
+    for (var i = 0; i < comments.length; ++i) {
+      var comment = comments[i];
+      try {
+        if (comment.querySelector(".bz_comment_user a.email").href.substr(7) ==
+            "tbplbot@gmail.com") {
+          win.collapse_comment(comment.querySelector(".bz_collapse_comment"),
+                               comment.querySelector(".bz_comment_text"));
+        }
+      } catch (e) {
+        continue;
+      }
+    }
+    return false;
+  }, false);
+  a.appendChild(d.createTextNode("Collapse All tbplbot Comments"));
+  var li = d.createElement("li");
+  li.appendChild(a);
+  collapseExpandBox.appendChild(li);
+}
+
+tweakBugzilla(document);