source: binary-improvements/webserver_legacy/js/log.js@ 501

var lastLogLine = -1;

function StartLogModule () {
        var maxLinesPerRequest = 50;

        var timeout = null;
        var table = $("#tab_log > table");
        var lastRead = -1;
        
        
        var updateEvent = function() {
                $.getJSON( "../api/getlog?firstLine=" + (lastLogLine + 1) + "&lastLine=" + (lastLogLine + maxLinesPerRequest) )
                .done(function(data) {
                        if (data.firstLine - lastLogLine - 1 > 0) {
                                var row = $("<tr></tr>").appendTo (table);
                                $('<td colspan="4">Missed ' + (data.firstLine - lastLogLine - 1) + ' log entries</td>').addClass ("logcol_missed").appendTo (row);
                        }
                        for (var i = 0; i < data.entries.length; i++) {
                                var row = $("<tr></tr>").addClass (data.entries [i].type).attr ("id", "line" + (data.firstLine + i)).appendTo (table);
                                $("<td>" + data.entries [i].date + " " + data.entries [i].time + "</td>").addClass ("logcol_datetime").appendTo (row);
                                $("<td>" + data.entries [i].uptime + "</td>").addClass ("logcol_uptime").appendTo (row);
                                $("<td>" + data.entries [i].type + "</td>").addClass ("logcol_type").appendTo (row);
                                var msg = $("<td></td>").text(data.entries [i].msg).addClass ("logcol_msg").appendTo (row);
                                if (data.entries [i].trace.length > 0) {
                                        msg.append ('<br><div class="trace"><span>' + data.entries [i].trace.replace (/\n/g, "</span><span>") + '</span></div><a class="tracebtn"></a>');
                                }
                        }

                        if (data.entries.length > 0) {
                                lastLogLine = data.lastLine;
                        }
                })
                .fail(function(jqxhr, textStatus, error) {
                        console.log("Error fetching log lines");
                })
                .always(function() {
                });
                timeout = window.setTimeout(updateEvent, 2000);
        };
        
        var markAsRead = function() {
                lastRead = lastLogLine;
                table.find (".readmark").removeClass ("readmark");
                table.find ("#line" + (lastRead)).addClass ("readmark");
        };
        
        table.on ("click.action", ".tracebtn", function (event) {
                $(this).toggleClass ("visible");
                $(this).prev ().toggleClass ("visible");
        });
        
        $(".adminlog #markasread").on ("click.action", null, function (event) {
                markAsRead ();
        });
        
        
        tabs.on ("tabbedcontenttabopened", function (event, data) {
                if (data.newTab === "#tab_log") {
                        updateEvent ();

                        markAsRead ();
                        var markedrow = $(".adminlog .readmark");
                        if (markedrow.length > 0) {
                                window.setTimeout (function () {
                                        $('html, body').scrollTop (markedrow.offset ().top);
                                }, 20);
                        }
                } else {
                        window.clearTimeout (timeout);
                }
        });
        
        if (tabs.tabbedContent ("isTabOpen", "tab_log")) {
                updateEvent ();
        }

}