Further work on breakout and rrule.

1 files changed, 57 insertions, 0 deletions

diff --git a/static/rrule.js b/static/rrule.js
new file mode 100644
index 00000000..30bed919
--- /dev/null
+++ b/static/rrule.js
@@ -0,0 +1,57 @@
+class RRule {
+
+    /* direct access to fields is fine */
+    /* setting them however requires methods, since there might
+       be listeners */
+
+    const fields = ['freq', 'until', 'count', 'interval',
+                    'bysecond', 'byminute', 'byhour',
+                    'bymonthday', 'byyearday', 'byweekno',
+                    'bymonth', 'bysetpos', 'wkst']
+
+    constructor() {
+
+        this.listeners = {}
+
+        for (let f of this.fields) {
+            this[f] = false;
+            Object.defineProperty(
+                this, f, {
+                    get: () => this['_' + f];
+                    set: (v) => {
+                        this['_' + f] = v
+                        for (let l of this.listeners[f]) {
+                            l(v);
+                        }
+                    }
+                });
+            this.listeners[f] = [];
+        }
+    }
+
+    addListener(field, proc) {
+        this.listeners[field].append(proc);
+    }
+
+    asXcal() {
+        /* TODO empty case */
+        let str = "<recur>";
+        for (let f of this.fields) {
+            let v = this.fields[f];
+            if (! v) continue;
+            str += `<${f}>${v}</${f}>`;
+        }
+        str += "</recur>";
+        return str;
+    }
+
+    /*
+    asIcal() {
+        return this.fields
+            .map(f => [f, this.fields[f]])
+            .filter([_, v] => v)
+            .map(([k, v]) => `${k}=${v}`)
+            .join(';');
+    }
+    */
+};