its wCLog now, as js styleguides command us.
[citadel.git] / webcit / static / summaryview.js
1 /*
2  * Webcit Summary View v2
3  * All comments, flowers and death threats to Mathew McBride
4  * <matt@mcbridematt.dhs.org> / <matt@comalies>
5  * Copyright 2009 The Citadel Team
6  * Licensed under the GPL V3
7  *
8  * QA reminders: because I keep forgetting / get cursed.
9  * After changing anything in here, make sure that you still can:
10  * 1. Resort messages in both normal and paged view.
11  * 2. Select a range with shift-click 
12  * 3. Select messages with ctrl-click
13  * 4. Normal click will deselect everything done above
14  * 5. Move messages, and they will disappear
15  */
16
17 document.observe("dom:loaded", createMessageView);
18
19 var msgs = null;
20 var message_view = null;
21 var loadingMsg = null;
22 var rowArray = null;
23 var currentSortMode = null;
24
25 // Header elements
26 var mlh_date = null;
27 var mlh_subject = null;
28 var mlh_from = null;
29 var currentSorterToggle = null;
30 var query = "";
31 var currentlyMarkedRows = new Object();
32 var markedRowIndex = null;
33 var currentlyHasRowsSelected = false;
34
35 var mouseDownEvent = null;
36 var exitedMouseDown = false;
37
38 var originalMarkedRow = null;
39 var previousFinish = 0;
40 var markedFrom = 0;
41 var trTemplate = new Array(11);
42 trTemplate[0] = "<tr id=\"";
43 trTemplate[2] = "\" citadel:dropenabled=\"dropenabled\" class=\"";
44 trTemplate[4] = "\" citadel:dndelement=\"summaryViewDragAndDropHandler\" citadel:msgid=\"";
45 trTemplate[6] = "\" citadel:ctdlrowid=\"";
46 trTemplate[8] = "\"><td class=\"col1\">";
47 trTemplate[10] = "</td><td class=\"col2\">";
48 trTemplate[12] = "</td><td class=\"col3\">";
49 trTemplate[14] = "</td></tr>";
50
51
52 var currentPage = 0;
53 var sortModes = {
54         "rdate" : sortRowsByDateDescending,
55         "date" : sortRowsByDateAscending,
56         "subj" : sortRowsBySubjectAscending,
57         "rsubj" : sortRowsBySubjectDescending,
58         "sender": sortRowsByFromAscending,
59         "rsender" : sortRowsByFromDescending
60 };
61 var toggles = {};
62
63 var nummsgs = 0;
64 var startmsg = 0;
65 var newmsgs = 0;
66
67 function refreshMessageCounter() {
68     var templStr = document.getElementById("nummsgs_template").innerHTML;
69     templStr = templStr.replace(/UNREADMSGS/, newmsgs);
70     templStr = templStr.replace(/TOTALMSGS/,  nummsgs);
71     document.getElementById("nummsgs").innerHTML = templStr;
72 }
73
74 function createMessageView() {
75         message_view = document.getElementById("message_list_body");
76         loadingMsg = document.getElementById("loading");
77         getMessages();
78         mlh_date = $("mlh_date");
79         mlh_subject = $('mlh_subject');
80         mlh_from = $('mlh_from');
81         toggles["rdate"] = mlh_date;
82         toggles["date"] = mlh_date;
83         toggles["subj"] = mlh_subject;
84         toggles["rsubj"] = mlh_subject;
85         toggles["sender"] = mlh_from;
86         toggles["rsender"] = mlh_from;
87         mlh_date.observe('click',ApplySort);
88         mlh_subject.observe('click',ApplySort);
89         mlh_from.observe('click',ApplySort);
90         $(document).observe('keyup',CtdlMessageListKeyUp,false);
91         $('resize_msglist').observe('mousedown', CtdlResizeMouseDown);
92         $('m_refresh').observe('click', getMessages);
93         document.getElementById('m_refresh').setAttribute("href","#");
94         Event.observe(document.onresize ? document : window, "resize", normalizeHeaderTable);
95         Event.observe(document.onresize ? document : window, "resize", sizePreviewPane);
96         if ( $('summpage') ) {
97                 $('summpage').observe('change', getPage);
98         }
99         else {
100                 alert('error: summpage does not exist');
101         }
102         takeOverSearchOMatic();
103         setupDragDrop(); // here for now
104 }
105
106 function getMessages() {
107         if (loadingMsg.parentNode == null) {
108                 message_view.innerHTML = "";
109                 message_view.appendChild(loadingMsg);
110         }
111         roomName = getTextContent(document.getElementById("rmname"));
112         var parameters = {'room':roomName, 'startmsg': startmsg, 'stopmsg': -1};
113         if (is_safe_mode) {
114                 parameters['stopmsg'] = parseInt(startmsg)+499;
115                 //parameters['maxmsgs'] = 500;
116                 if (currentSortMode != null) {
117                         var SortBy = currentSortMode[0];
118                         if (SortBy.charAt(0) == 'r') {
119                                 SortBy = SortBy.substr(1);
120                                 parameters["SortOrder"] = "0";
121                         }
122                         parameters["SortBy"] = SortBy;
123                 }
124         } 
125         if (query.length > 0) {
126                 parameters["query"] = query;
127         }
128         new Ajax.Request("roommsgs", {
129                 method: 'get',
130                                 onSuccess: loadMessages,
131                                 parameters: parameters,
132                                 sanitize: false,
133                                 evalJSON: false,
134                                 onFailure: function(e) { alert("Failure: " + e);}
135         });
136 }
137
138 function evalJSON(data) {
139         var jsonData = null;
140         if (typeof(JSON) === 'object' && typeof(JSON.parse) === 'function') {
141                 try {
142                         jsonData = JSON.parse(data);
143                 } catch (e) {
144                         // ignore
145                 }
146         }
147         if (jsonData == null) {
148                 jsonData = eval('('+data+')');
149         }
150         return jsonData;
151 }
152 function loadMessages(transport) {
153         try {
154                 var data = evalJSON(transport.responseText);
155                 if (!!data && transport.responseText.length < 2) {
156                         alert("Message loading failed");
157                 } 
158                 nummsgs = data['nummsgs'];
159                 newmsgs =  data['newmsgs'];
160                 msgs = data['msgs'];
161                 var length = msgs.length;
162                 rowArray = new Array(length); // store so they can be sorted
163                 wCLog("Row array length: "+rowArray.length);
164         } catch (e) {
165                 //window.alert(e+"|"+e.description);
166         }
167         if (currentSortMode == null) {
168                 if (sortmode.length < 1) {
169                         sortmode = "rdate";
170                 }
171                 currentSortMode = [sortmode, sortModes[sortmode]];
172                 currentSorterToggle = toggles[sortmode];
173         }
174         if (!is_safe_mode) {
175                 resortAndDisplay(currentSortMode[1]);
176         } else {
177                 setupPageSelector();
178                 resortAndDisplay(null);
179         }
180         if (loadingMsg.parentNode != null) {
181                 loadingMsg.parentNode.removeChild(loadingMsg);
182         }
183         sizePreviewPane();
184         refreshMessageCounter();
185 }
186 function resortAndDisplay(sortMode) {
187         wCLog("Begin resortAndDisplay");
188   
189         /* We used to try and clear out the message_view element,
190            but stupid IE doesn't even do that properly */
191         var message_view_parent = message_view.parentNode;
192         message_view_parent.removeChild(message_view);
193         var startSort = new Date();
194         try {
195                 if (sortMode != null) {
196                         msgs.sort(sortMode);
197                 }
198         } catch (e) {
199                 wCLog("Sort error: " + e);
200         }
201         var endSort = new Date();
202         wCLog("Sort rowArray in " + (endSort-startSort));
203         var start = new Date();
204         var length = msgs.length;
205         var compiled = new Array(length+2);
206         compiled[0] = "<table class=\"mailbox_summary\" id=\"summary_headers\" \"cellspacing=0\" style=\"width:100%;-moz-user-select:none;\">";
207         for(var x=0; x<length; ++x) {
208                 try {
209                         var currentRow = msgs[x];
210                         trTemplate[1] = "msg_"+currentRow[0];
211                         var className = "";
212                         if (((x-1) % 2) == 0) {
213                                 className += "table-alt-row";
214                         } else {
215                                 className += "table-row";
216                         }
217                         if (currentRow[5]) {
218                                 className += " new_message";
219                         }
220                         trTemplate[3] = className;
221                         trTemplate[5] = currentRow[0];
222                         trTemplate[7] = x;
223                         trTemplate[9] = currentRow[1];
224                         trTemplate[11] = currentRow[2];
225                         trTemplate[13] = currentRow[4];
226                         var i = x+1;
227                         compiled[i] = trTemplate.join("");
228                 } catch (e) {
229                         wCLog("Exception on row " +  x + ":" + e);
230                 }
231         }
232         compiled[length+2] = "</table>";
233         var end = new Date();
234         wCLog("iterate: " + (end-start));
235         var compile = compiled.join("");
236         start = new Date();
237         $(message_view_parent).update(compile);
238         message_view_parent.observe('click', CtdlMessageListClick);
239         message_view = message_view_parent.firstChild;
240         end = new Date();
241         var delta = end.getTime() - start.getTime();
242         wCLog("append: " + delta);
243         ApplySorterToggle();
244         normalizeHeaderTable();
245 }
246 function sortRowsByDateAscending(a, b) {
247         var dateOne = a[3];
248         var dateTwo = b[3];
249         return (dateOne - dateTwo);
250 };
251 function sortRowsByDateDescending(a, b) {
252         var dateOne = a[3];
253         var dateTwo = b[3];
254         return (dateTwo - dateOne);
255 };
256 function sortRowsBySubjectAscending(a, b) {
257         var subjectOne = a[1];
258         var subjectTwo = b[1];
259         return strcmp(subjectOne, subjectTwo);
260 };
261 function sortRowsBySubjectDescending(a, b) {
262         var subjectOne = a[1];
263         var subjectTwo = b[1];
264         return strcmp(subjectTwo, subjectOne);
265 };
266 function sortRowsByFromAscending(a, b) {
267         var fromOne = a[2];
268         var fromTwo = b[2];
269         return strcmp(fromOne, fromTwo);
270 };
271 function sortRowsByFromDescending(a, b) {
272         var fromOne = a[2];
273         var fromTwo = b[2];
274         return strcmp(fromTwo, fromOne);
275 };
276 function CtdlMessageListClick(evt) {
277     /* Since element.onload is used here, test to see if evt is defined */
278     var event = evt ? evt : window.event; 
279     var target = event.target ? event.target: event.srcElement; // and again..
280     var parent = target.parentNode;
281     var msgId = parent.getAttribute("citadel:msgid");
282     var is_shift_pressed = event.shiftKey;
283     var is_ctrl_pressed = event.ctrlKey;
284     var rowclass = parent.getAttribute("class");
285     var msgUnseen = rowclass.search("new_message") >= 0;
286
287     /* debugging
288        str = '.';
289        if (is_shift_pressed) {
290        str = str + 'S';
291        }
292        str = str + '.';
293        if (is_ctrl_pressed) {
294        str = str + 'C';
295        }
296        str = str + '.';
297        $('ib_summary').innerHTML = str;
298     */
299
300     // If the ctrl key modifier wasn't used, unmark all rows and load the message
301     if (!is_shift_pressed && !is_ctrl_pressed) {
302         previousFinish = 0;
303         markedFrom = 0;
304         unmarkAllRows();
305         markedRowIndex = parent.rowIndex;
306         originalMarkedRow = parent;
307         document.getElementById("preview_pane").innerHTML = "";
308         new Ajax.Updater('preview_pane', 'msg/'+msgId, {method: 'get'});
309         markRow(parent);
310
311         if (msgUnseen) {
312             var p = encodeURI('g_cmd=SEEN ' + msgId + '|1');
313             new Ajax.Request('ajax_servcmd', {
314                 method: 'post',
315                 parameters: p,
316                 onComplete: CtdlMarkRowAsRead(parent)
317             });
318         }
319         // If the shift key modifier is used, mark a range...
320     } else if (event.button != 2 && is_shift_pressed) {
321         if (originalMarkedRow == null) {
322             originalMarkedRow = parent;
323             markRow(parent);
324         } else {
325             unmarkAllRows();
326             markRow(parent);
327             markRow(originalMarkedRow);
328         }
329         var rowIndex = parent.rowIndex;
330         if (markedFrom == 0) {
331             markedFrom = rowIndex;
332         }
333         var startMarkingFrom = 0;
334         var finish = 0;
335         if (markedRowIndex === null) {
336             startMarkingFrom = 0;
337             finish = rowIndex;
338         }
339         else if (rowIndex > markedRowIndex) {
340             startMarkingFrom = markedRowIndex+1;
341             finish = rowIndex;
342         } else if (rowIndex < markedRowIndex) {
343             startMarkingFrom = rowIndex+1;
344             finish = markedRowIndex;
345         }
346         previousFinish = finish;
347         wCLog('startMarkingFrom=' + startMarkingFrom + ', finish=' + finish);
348         for(var x = startMarkingFrom; x<finish; x++) {
349             wCLog("Marking row " + x);
350             markRow(parent.parentNode.rows[x]);
351         }
352         // If the ctrl key modifier is used, toggle one message
353     } else if (event.button != 2 && is_ctrl_pressed) {
354         if (parent.getAttribute("citadel:marked")) {
355             unmarkRow(parent);
356         }
357         else {
358             markRow(parent);
359         }
360     }
361 }
362 function CtdlMarkRowAsRead(rowElement) {
363         var classes = rowElement.className;
364         classes = classes.replace("new_message","");
365         rowElement.className = classes;
366         newmsgs--;
367         refreshMessageCounter();
368 }
369 function ApplySort(event) {
370         var target = event.target;
371         var sortId = target.id;
372         removeOldSortClass();
373         currentSorterToggle = target;
374         var sortModes = getSortMode(target); // returns [[key, func],[key,func]]
375         var sortModeToUse = null;
376         if (currentSortMode[0] == sortModes[0][0]) {
377                 sortModeToUse = sortModes[1];
378         } else {
379                 sortModeToUse = sortModes[0];
380         }
381         currentSortMode = sortModeToUse;
382         if (is_safe_mode) {
383                 getMessages(); // in safe mode, we load from server already sorted
384         } else {
385                 resortAndDisplay(sortModeToUse[1]);
386         }
387 }
388 function getSortMode(toggleElem) {
389         var forward = null;
390         var reverse = null;
391         for(var key in toggles) {
392                 var kr = (key.charAt(0) == 'r');
393                 if (toggles[key] == toggleElem && !kr) {
394                         forward = [key, sortModes[key]];
395                 } else if (toggles[key] == toggleElem && kr) {
396                         reverse = [key, sortModes[key]];
397                 }
398         }
399         return [forward, reverse];
400 }
401 function removeOldSortClass() {
402         if (currentSorterToggle) {
403                 var classes = currentSorterToggle.className;
404                 classes = classes.replace("current_sort_mode","");
405                 classes = classes.replace("sort_ascending","");
406                 classes = classes.replace("sort_descending","");
407                 currentSorterToggle.className = classes;
408         }
409 }
410 function markRow(row) {
411         var msgId = row.getAttribute("citadel:msgid");
412         row.className = row.className += " marked_row";
413         row.setAttribute("citadel:marked","marked");
414         currentlyMarkedRows[msgId] = row;
415 }
416 function unmarkRow(row) {
417         var msgId = row.getAttribute("citadel:msgid");
418         row.className = row.className.replace("marked_row","");
419         row.removeAttribute("citadel:marked");
420         delete currentlyMarkedRows[msgId];
421 }
422 function unmarkAllRows() {
423         for(msgId in currentlyMarkedRows) {
424                 unmarkRow(currentlyMarkedRows[msgId]);
425         }
426 }
427 function deleteAllMarkedRows() {
428         for(msgId in currentlyMarkedRows) {
429                 var row = currentlyMarkedRows[msgId];
430                 var rowclass = row.getAttribute("class");
431                 var msgUnseen = rowclass.search("new_message") >= 0;
432
433                 var rowArrayId = row.getAttribute("citadel:ctdlrowid");
434                 row.parentNode.removeChild(row);
435                 delete currentlyMarkedRows[msgId];
436                 delete msgs[rowArrayId];
437                 if (msgUnseen)
438                     newmsgs--;
439                 nummsgs--;
440         }
441         // Now we have to reconstruct rowarray as the array length has changed */
442         var newMsgs = new Array(msgs.length-1);
443         var x=0;
444         for(var i=0; i<rowArray.length; i++) {
445                 var currentRow = msgs[i];
446                 if (currentRow != null) {
447                         newMsgs[x] = currentRow;
448                         x++;
449                 }
450         }
451         msgs = newMsgs;
452         resortAndDisplay(null);
453         refreshMessageCounter();
454 }
455 function deleteAllSelectedMessages() {
456     var mvCommand = "";
457     var msgIds = "";
458     for(msgId in currentlyMarkedRows) {
459         msgIds += ","+msgId;
460
461         if (msgIds.length > 800) {
462             if (!room_is_trash) {
463                 mvCommand = encodeURI("g_cmd=MOVE " + msgIds + "|_TRASH_|0");
464             }
465             else {
466                 mvCommand = encodeURI("g_cmd=DELE " + msgIds);
467             }
468             new Ajax.Request("ajax_servcmd", {
469                 parameters: mvCommand,
470                 method: 'post',
471                 onSuccess: function(transport) {
472                     wCLog(transport.responseText);
473                 }
474             });
475             msgIds = "";
476         }
477     }
478
479     if (!room_is_trash) {
480         mvCommand = encodeURI("g_cmd=MOVE " + msgIds + "|_TRASH_|0");
481     }
482     else {
483         mvCommand = encodeURI("g_cmd=DELE " + msgIds);
484     }
485     new Ajax.Request("ajax_servcmd", {
486         parameters: mvCommand,
487         method: 'post',
488         onSuccess: function(transport) {
489             wCLog(transport.responseText);
490         }
491     });
492
493     document.getElementById("preview_pane").innerHTML = "";
494     deleteAllMarkedRows();
495 }
496
497
498 function CtdlMessageListKeyUp(event) {
499         var key = event.which || event.keyCode;
500
501         if (key == 46) {                                /* DELETE */
502                 deleteAllSelectedMessages();
503         }
504 }
505
506 function clearMessage(msgId) {
507         var row = document.getElementById('msg_'+msgId);
508         row.parentNode.removeChild(row);
509         delete currentlyMarkedRows[msgId];
510 }
511
512 function summaryViewContextMenu() {
513         if (!exitedMouseDown) {
514                 var contextSource = document.getElementById("listViewContextMenu");
515                 CtdlSpawnContextMenu(mouseDownEvent, contextSource);
516         }
517 }
518
519 function summaryViewDragAndDropHandler() {
520         var element = document.createElement("div");
521         var msgList = document.createElement("ul");
522         element.appendChild(msgList);
523         for(msgId in currentlyMarkedRows) {
524                 msgRow = currentlyMarkedRows[msgId];
525                 var subject = getTextContent(msgRow.getElementsByTagName("td")[0]);
526                 var li = document.createElement("li");
527                 msgList.appendChild(li);
528                 setTextContent(li, subject);
529                 li.ctdlMsgId = msgId;
530         }
531         return element;
532 }
533
534 var saved_y = 0;
535 function CtdlResizeMouseDown(event) {
536         $(document).observe('mousemove', CtdlResizeMouseMove);
537         $(document).observe('mouseup', CtdlResizeMouseUp);
538         saved_y = event.clientY;
539 }
540
541 function sizePreviewPane() {
542         var preview_pane = document.getElementById("preview_pane");
543         var summary_view = document.getElementById("summary_view");
544         var banner = document.getElementById("banner");
545         var message_list_hdr = document.getElementById("message_list_hdr");
546         var content = $('global');  // we'd like to use prototype methods here
547         var childElements = content.childElements();
548         var sizeOfElementsAbove = 0;
549         var heightOfViewPort = document.viewport.getHeight() // prototypejs method
550                 var bannerHeight = banner.offsetHeight;
551         var contentViewPortHeight = heightOfViewPort-banner.offsetHeight-message_list_hdr.offsetHeight;
552         contentViewPortHeight = 0.95 * contentViewPortHeight; // leave some error (especially for FF3!!)
553         // Set summary_view to 20%;
554         var summary_height = ctdlLocalPrefs.readPref("svheight");
555         if (summary_height == null) {
556                 summary_height = 0.20 * contentViewPortHeight;
557         }
558         // Set preview_pane to the remainder
559         var preview_height = contentViewPortHeight - summary_height;
560   
561         summary_view.style.height = (summary_height)+"px";
562         preview_pane.style.height = (preview_height)+"px";
563 }
564 function CtdlResizeMouseMove(event) {
565         var clientX = event.clientX;
566         var clientY = event.clientY;
567         var summary_view = document.getElementById("summary_view");
568         var summaryViewHeight = summary_view.offsetHeight;
569         var increment = clientY-saved_y;
570         var summary_view_height = increment+summaryViewHeight;
571         summary_view.style.height = (summary_view_height)+"px";
572         // store summary view height 
573         ctdlLocalPrefs.setPref("svheight",summary_view_height);
574         var msglist = document.getElementById("preview_pane");
575         var msgListHeight = msglist.offsetHeight;
576         msglist.style.height = (msgListHeight-increment)+"px";
577         saved_y = clientY;
578         /* For some reason the grippy doesn't work without position: absolute
579            so we need to set its top pos manually all the time */
580         var resize = document.getElementById("resize_msglist");
581         var resizePos = resize.offsetTop;
582         resize.style.top = (resizePos+increment)+"px";
583 }
584 function CtdlResizeMouseUp(event) {
585         $(document).stopObserving('mousemove', CtdlResizeMouseMove);
586         $(document).stopObserving('mouseup', CtdlResizeMouseUp);
587 }
588 function ApplySorterToggle() {
589         var className = currentSorterToggle.className;
590         className += " current_sort_mode";
591         if (currentSortMode[1] == sortRowsByDateDescending ||
592             currentSortMode[1] == sortRowsBySubjectDescending ||
593             currentSortMode[1] == sortRowsByFromDescending) {
594                 className += " sort_descending";
595         } else {
596                 className += " sort_ascending";
597         }
598         currentSorterToggle.className = className;
599 }
600
601 /* Hack to make the header table line up with the data */
602 function normalizeHeaderTable() {
603         var message_list_hdr = document.getElementById("message_list_hdr");
604         var summary_view = document.getElementById("summary_view");
605         var resize_msglist = document.getElementById("resize_msglist");
606         var headerTable = message_list_hdr.getElementsByTagName("table")[0];
607         var dataTable = summary_view.getElementsByTagName("table")[0];
608         var dataTableWidth = dataTable.offsetWidth;
609         headerTable.style.width = dataTableWidth+"px";
610 }
611
612 function setupPageSelector() {
613         var summpage = document.getElementById("summpage");
614         var select_page = document.getElementById("selectpage");
615         summpage.innerHTML = "";
616         if (is_safe_mode) {
617                 wCLog("unhiding parent page");
618                 select_page.className = "";
619         } else {
620                 return;
621         }
622         var pages = nummsgs / 499;
623         for(var i=0; i<pages; i++) {
624                 var opt = document.createElement("option");
625                 var startmsg = i * 499;
626                 opt.setAttribute("value",startmsg);
627                 if (currentPage == i) {
628                         opt.setAttribute("selected","selected");
629                 }
630                 opt.appendChild(document.createTextNode((i+1)));
631                 summpage.appendChild(opt);
632         }
633 }
634
635 function getPage(event) {
636         var target = event.target;
637         startmsg = target.options.item(target.selectedIndex).value;
638         currentPage = target.selectedIndex;
639         //query = ""; // We are getting a page from the _entire_ msg list, don't query
640         getMessages();
641 }
642
643 function takeOverSearchOMatic() {
644         var searchForm = document.getElementById("searchomatic").getElementsByTagName("form")[0];
645         // First disable the form post
646         searchForm.setAttribute("action","javascript:void();");
647         searchForm.removeAttribute("method");
648         $(searchForm).observe('submit', doSearch);
649 }
650 function doSearch() {
651         query = document.getElementById("srchquery").value;
652         getMessages();
653         return false;
654 }