1 files changed, 77 insertions, 0 deletions
diff --git a/comm/calendar/base/src/CalIcsSerializer.jsm b/comm/calendar/base/src/CalIcsSerializer.jsm
new file mode 100644
index 0000000000..ebdf84f9e7
--- /dev/null
+++ b/comm/calendar/base/src/CalIcsSerializer.jsm
@@ -0,0 +1,77 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var EXPORTED_SYMBOLS = ["CalIcsSerializer"];
+
+var { cal } = ChromeUtils.import("resource:///modules/calendar/calUtils.jsm");
+
+function CalIcsSerializer() {
+  this.wrappedJSObject = this;
+  this.mItems = [];
+  this.mProperties = [];
+  this.mComponents = [];
+}
+CalIcsSerializer.prototype = {
+  QueryInterface: ChromeUtils.generateQI(["calIIcsSerializer"]),
+  classID: Components.ID("{207a6682-8ff1-4203-9160-729ec28c8766}"),
+
+  addItems(aItems) {
+    if (aItems.length > 0) {
+      this.mItems = this.mItems.concat(aItems);
+    }
+  },
+
+  addProperty(aProperty) {
+    this.mProperties.push(aProperty);
+  },
+
+  addComponent(aComponent) {
+    this.mComponents.push(aComponent);
+  },
+
+  serializeToString() {
+    let calComp = this.getIcalComponent();
+    return calComp.serializeToICS();
+  },
+
+  serializeToInputStream(aStream) {
+    let calComp = this.getIcalComponent();
+    return calComp.serializeToICSStream();
+  },
+
+  serializeToStream(aStream) {
+    let str = this.serializeToString();
+
+    // Convert the javascript string to an array of bytes, using the
+    // UTF8 encoder
+    let convStream = Cc["@mozilla.org/intl/converter-output-stream;1"].createInstance(
+      Ci.nsIConverterOutputStream
+    );
+    convStream.init(aStream, "UTF-8");
+
+    convStream.writeString(str);
+    convStream.close();
+  },
+
+  getIcalComponent() {
+    let calComp = cal.icsService.createIcalComponent("VCALENDAR");
+    cal.item.setStaticProps(calComp);
+
+    // xxx todo: think about that the below code doesn't clone the properties/components,
+    //           thus ownership is moved to returned VCALENDAR...
+
+    for (let prop of this.mProperties) {
+      calComp.addProperty(prop);
+    }
+    for (let comp of this.mComponents) {
+      calComp.addSubcomponent(comp);
+    }
+
+    for (let item of cal.iterate.items(this.mItems)) {
+      calComp.addSubcomponent(item.icalComponent);
+    }
+
+    return calComp;
+  },
+};