1 files changed, 136 insertions, 0 deletions
diff --git a/static/ts/clock.ts b/static/ts/clock.ts
new file mode 100644
index 00000000..bbd15de0
--- /dev/null
+++ b/static/ts/clock.ts
@@ -0,0 +1,136 @@
+export {
+    SmallcalCellHighlight, Timebar,
+    initialize_clock_components
+}
+
+import { makeElement, date_to_percent } from './lib'
+
+abstract class Clock {
+    abstract update(now: Date): void;
+}
+
+
+class Timebar extends Clock {
+
+    // start_time: Date
+    // end_time: Date
+    bar_object: HTMLElement | null
+
+    constructor(/*start_time: Date, end_time: Date*/) {
+        super();
+        // this.start_time = start_time;
+        // this.end_time = end_time;
+        this.bar_object = null
+    }
+
+
+    update(now: Date) {
+        // if (! (this.start_time <= now.getTime() && now.getTime() < this.end_time))
+        //     return;
+
+        var event_area = document.getElementById(now.format("~Y-~m-~d"))
+
+        if (event_area) {
+            if (this.bar_object !== null && this.bar_object.parentNode !== null) {
+                this.bar_object.parentNode.removeChild(this.bar_object)
+            } else {
+                this.bar_object = makeElement('div', {
+                    id: 'bar',
+                    className: 'eventlike current-time',
+                });
+            }
+
+            this.bar_object.style.top = date_to_percent(now) + "%";
+            event_area.append(this.bar_object)
+        }
+    }
+}
+
+class SmallcalCellHighlight extends Clock {
+
+    small_cal: HTMLElement
+    current_cell: HTMLElement | null
+
+    constructor(small_cal: HTMLElement) {
+        super();
+        this.small_cal = small_cal;
+        this.current_cell = null
+    }
+
+    update(now: Date) {
+        if (this.current_cell) {
+            this.current_cell.style.border = "";
+        }
+
+        /* This is expeced to fail if the current date is not
+           currently on screen. */
+        this.current_cell = this.small_cal.querySelector(
+            "time[datetime='" + now.format("~Y-~m-~d") + "']");
+
+        if (this.current_cell) {
+            this.current_cell.style.border = "1px solid black";
+        }
+    }
+}
+
+/* -------------------------------------------------- */
+
+class ClockElement extends HTMLElement {
+
+    timer_id: number
+
+    constructor() {
+        super();
+
+        this.timer_id = 0
+    }
+
+    connectedCallback() {
+        let interval = this.hasAttribute('interval')
+            ? +(this.getAttribute('interval') as string)
+            : 60;
+        interval *= 1000 /* ms */
+
+        this.timer_id = window.setInterval(() => this.update(new Date), interval)
+        this.update(new Date)
+    }
+
+    static get observedAttributes() {
+        return ['timer_id']
+    }
+
+    update(_: Date) { /* noop */ }
+}
+
+
+class TodayButton extends ClockElement {
+    a: HTMLAnchorElement;
+
+    constructor() {
+        super();
+        this.a = document.createElement('a');
+        this.a.textContent = 'Idag';
+        this.a.classList.add('btn');
+    }
+
+    connectedCallback() {
+        super.connectedCallback();
+        this.replaceChildren(this.a);
+    }
+
+    update(now: Date) {
+        this.a.href = now.format("~Y-~m-~d.html")
+    }
+}
+
+
+class CurrentTime extends ClockElement {
+    update(now: Date) {
+        this.textContent = now.format('~H:~M:~S')
+    }
+}
+
+function initialize_clock_components() {
+    customElements.define('today-button', TodayButton)
+    customElements.define('current-time', CurrentTime)
+}