function renderCalendar()

in webui/js/source/sidebar-calendar.js [36:149]
104 lines of code
25 McCabe index (conditional complexity)

function renderCalendar(state) {
    calendar_state = state ? state : calendar_state;
    calendar_index = 0;
    current_calendar_size = G_show_stats_sidebar ? CALENDAR_YEARS_SHOWN : calendar_max_height();
    // Only render if calendar div is present
    let cal = document.getElementById('sidebar_calendar');
    if (!cal) {
        return;
    }

    let now = new Date();
    let CY = now.getFullYear();
    let CM = now.getMonth() + 1;
    let SY = Math.min(calendar_state.LY, CY); // last year in calendar, considering current date

    // If Last Year is into the future, set Last Month to this one.
    if (calendar_state.LY > CY) {
        calendar_state.LM = CM;
    }

    let cdiv = new HTML('div', {
        class: 'sidebar_calendar'
    })
    let N = 0;

    // Chevron for moving to later years
    let chevron = new HTML('div', {
        class: 'sidebar_calendar_chevron'
    });
    chevron.inject(new HTML('span', {
        onclick: 'calendar_scroll(this, -1);',
        style: {
            display: 'none'
        },
        id: 'sidebar_calendar_up',
        class: 'glyphicon glyphicon-collapse-up',
        title: "Show later years"
    }, " "));
    cdiv.inject(chevron);

    // Create divs for each year, assign all visible
    for (let Y = SY; Y >= calendar_state.FY; Y--) {
        let ydiv = new HTML('div', {
            class: 'sidebar_calendar_year',
            id: 'sidebar_calendar_' + N++
        });
        ydiv.inject(txt(Y));
        ydiv.inject(new HTML('br'));
        for (let i = 0; i < MONTHS_SHORTENED.length; i++) {
            let mon = MONTHS_SHORTENED[i];
            let mdiv = new HTML('div', {
                onclick: 'calendar_click(%u, %u);'.format(Y, i + 1),
                class: 'sidebar_calendar_month'
            }, mon);

            // Mark out-of-bounds segments
            let ym = '%04u-%02u'.format(Y, i+1);
            let c_active = true;
            if (calendar_state.activity && !calendar_state.activity[ym]) {
                c_active = false;
            }
            if ((Y == SY && i >= calendar_state.LM) || (Y == CY && i > CM)) {
                c_active = false;
            }
            if (Y == calendar_state.FY && ((i + 1) < calendar_state.FM)) {
                c_active = false;
            }
            if (!c_active) {
                mdiv.setAttribute("class", "sidebar_calendar_month_nothing");
                mdiv.setAttribute("onclick", "javascript:void(0);");
            } else if (calendar_state.activity && calendar_state.activity[ym]) {
                let count = calendar_state.activity[ym];
                if (count >= 1000) {
                    count = Math.round(count/100.0); // nearest century
                    count = Math.floor(count/10) + "k" + (count % 10); // thousands and remainder
                } else {
                    count = count.toString();
                }
                mdiv.inject(new HTML('span', {title: `${calendar_state.activity[ym].pretty()} emails this month`, class: 'calendar_count'}, count));
            }
            ydiv.inject(mdiv);
        }
        cdiv.inject(ydiv);
    }

    cal.innerHTML = "<p style='text-align: center;'>Archives (%u - %u):</p>".format(calendar_state.FY, SY);
    cal.inject(cdiv);


    chevron = new HTML('div', {
        class: 'sidebar_calendar_chevron'
    });
    chevron.inject(new HTML('span', {
        onclick: 'calendar_scroll(this, 1);',
        style: {
            display: 'none'
        },
        id: 'sidebar_calendar_down',
        class: 'glyphicon glyphicon-collapse-down',
        title: "Show earlier years"
    }, " "));
    cdiv.inject(chevron);

    // If we have > N years, hide the rest
    if (N > current_calendar_size) {
        for (let i = current_calendar_size; i < N; i++) {
            let obj = document.getElementById('sidebar_calendar_' + i);
            if (obj) {
                obj.style.display = "none";
            }
        }
        document.getElementById('sidebar_calendar_down').style.display = 'block';
    }
}