feat: add notifications widget

2 files changed, 249 insertions, 0 deletions

diff --git a/widget/notifications/Notifications.scss b/widget/notifications/Notifications.scss
new file mode 100644
index 0000000..5762df1
--- /dev/null
+++ b/widget/notifications/Notifications.scss
@@ -0,0 +1,141 @@
+$rosewater: #f5e0dc;
+$flamingo: #f2cdcd;
+$pink: #f5c2e7;
+$mauve: #cba6f7;
+$red: #f38ba8;
+$maroon: #eba0ac;
+$peach: #fab387;
+$yellow: #f9e2af;
+$green: #a6e3a1;
+$teal: #94e2d5;
+$sky: #89dceb;
+$sapphire: #74c7ec;
+$blue: #89b4fa;
+$lavender: #b4befe;
+
+$text: #cdd6f4;
+$subtext1: #bac2de;
+$subtext0: #a6adc8;
+
+$overlay2: #9399b2;
+$overlay1: #7f849c;
+$overlay0: #6c7086;
+
+$surface2: #585b70;
+$surface1: #45475a;
+$surface0: #313244;
+
+$base: #1e1e2e;
+$mantle: #181825;
+$crust: #11111b;
+
+window.Notifications {
+  box.Notification {
+    margin: .25rem 1rem;
+    border: 1px solid $blue;
+    border-radius: 5px;
+    min-width: 300px;
+
+    background-color: $base;
+
+    separator {
+      background: $blue;
+    }
+
+    &.low {
+      border-color: $overlay1;
+
+      separator {
+        background: $overlay1;
+      }
+    }
+
+    &.critical {
+      border-color: $red;
+
+      separator {
+        background: $red;
+      }
+    }
+
+    &:first-child {
+      margin-top: 1rem;
+    }
+
+    &:last-child {
+      margin-bottom: 1rem;
+    }
+
+    box.Header {
+      label.Application {
+        margin-top: .25rem;
+        margin-left: .5rem;
+
+        color: $text;
+
+        font-weight: bold;
+      }
+
+      label.Time {
+        margin: .25rem .25rem 0 1rem;
+
+        color: $subtext1;
+      }
+
+      button.Close {
+        margin: 0;
+        border: 0;
+        border-radius: 0;
+        padding: 5px;
+        min-width: 0;
+        min-height: 0;
+
+        background: none;
+
+        image {
+          background-color: $red;
+          border-radius: 50%;
+          color: $red;
+        }
+      }
+    }
+
+    box.Contents {
+      margin: .5rem;
+
+      label.Summary {
+        color: $text;
+
+        font-weight: bold;
+      }
+
+      label.Body {
+        color: $subtext1;
+      }
+    }
+
+    box.Actions {
+      button {
+        margin: 0 .25rem;
+        border: 0;
+        border-radius: 0;
+        padding: 5px;
+        min-width: 0;
+        min-height: 0;
+
+        background: none;
+        color: $text;
+
+        font-weight: bold;
+
+        &:first-child {
+          margin-left: 0;
+        }
+
+        &:last-child {
+          margin-right: 0;
+        }
+      }
+    }
+  }
+}
diff --git a/widget/notifications/Notifications.tsx b/widget/notifications/Notifications.tsx
new file mode 100644
index 0000000..6708b96
--- /dev/null
+++ b/widget/notifications/Notifications.tsx
@@ -0,0 +1,108 @@
+import { GLib, Variable } from "astal";
+import { bind, Subscribable } from "astal/binding";
+import { Astal, Gdk, Gtk } from "astal/gtk4";
+import AstalNotifd from "gi://AstalNotifd?version=0.1";
+
+const notificationTimeout: number = 5000;
+
+class NotificationHandler implements Subscribable<Gtk.Widget[]> {
+  private notifications: Variable<Gtk.Widget[]> = Variable([]);
+  private notificationsMap: Map<number, Gtk.Widget> = new Map();
+
+  constructor() {
+    const notifd = AstalNotifd.get_default();
+
+    notifd.connect("notified", (_source, id, _replaced) => {
+      const n = notifd.get_notification(id);
+      this.create(n);
+      setTimeout(() => this.remove(id), notificationTimeout);
+    });
+
+    notifd.connect("resolved", (_source, id, _reason) => {
+      this.remove(id);
+    });
+  }
+
+  private rerender() {
+    this.notifications.set([...this.notificationsMap.values()].reverse());
+  }
+
+  private create(n: AstalNotifd.Notification) {
+    const notification = Notification(n);
+    this.notificationsMap.get(n.id)?.emit("destroy");
+    this.notificationsMap.set(n.id, notification);
+    this.rerender();
+  }
+
+  private remove(id: number) {
+    this.notificationsMap.get(id)?.emit("destroy");
+    this.notificationsMap.delete(id);
+    this.rerender();
+  }
+
+  subscribe(callback: (value: Gtk.Widget[]) => void): () => void {
+    return this.notifications.subscribe(callback);
+  }
+
+  get(): Gtk.Widget[] {
+    return this.notifications.get();
+  }
+}
+
+function getUrgencyClass(n: AstalNotifd.Notification): string {
+  switch (n.urgency) {
+    case AstalNotifd.Urgency.LOW:
+      return "low";
+    case AstalNotifd.Urgency.CRITICAL:
+      return "critical";
+    case AstalNotifd.Urgency.NORMAL:
+    default:
+      return "normal";
+  }
+}
+
+function Notification(n: AstalNotifd.Notification) {
+  const appName = n.appName;
+  const time = GLib.DateTime.new_from_unix_local(n.time);
+
+  return <box cssClasses={["Notification", getUrgencyClass(n)]} vertical>
+    <box cssClasses={["Header"]}>
+      <label cssClasses={["Application"]} halign={Gtk.Align.START} label={appName || "Unknown"} />
+      <label cssClasses={["Time"]} hexpand halign={Gtk.Align.END} label={time.format("%I:%M:%S %p")!} />
+      <button cssClasses={["Close"]} onClicked={() => n.dismiss()}><image iconName="window-close-symbolic" /></button>
+    </box>
+    <Gtk.Separator visible />
+    <box cssClasses={["Contents"]}>
+      <box vertical>
+        <label cssClasses={["Summary"]} halign={Gtk.Align.START} label={n.summary} />
+        <label cssClasses={["Body"]} useMarkup wrap maxWidthChars={0} justify={Gtk.Justification.FILL} label={n.body} />
+      </box>
+    </box>
+
+    {n.get_actions().length > 0 && <>
+      <Gtk.Separator visible />
+      <box cssClasses={["Actions"]}>
+        {n.get_actions().map(({ label, id }) => <button hexpand onClicked={() => n.invoke(id)}><label label={label} /></button>)}
+      </box>
+    </>}
+  </box>;
+}
+
+export default function(gdkmonitor: Gdk.Monitor) {
+  const { TOP, RIGHT } = Astal.WindowAnchor;
+  const notifications = new NotificationHandler();
+
+  return <window
+    // NOTE: is required due to last notification being displayed all the time
+    visible={bind(notifications).as(v => v.length != 0)}
+
+    name={"Notifications"}
+    cssClasses={["Notifications"]}
+    gdkmonitor={gdkmonitor}
+    exclusivity={Astal.Exclusivity.EXCLUSIVE}
+    anchor={TOP | RIGHT}>
+    <box vertical>
+      {bind(notifications)}
+    </box>
+  </window>
+}