1 files changed, 69 insertions, 0 deletions
diff --git a/comm/calendar/base/src/CalMimeConverter.jsm b/comm/calendar/base/src/CalMimeConverter.jsm
new file mode 100644
index 0000000000..be09812817
--- /dev/null
+++ b/comm/calendar/base/src/CalMimeConverter.jsm
@@ -0,0 +1,69 @@
+/* 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 = ["CalMimeConverter"];
+
+var { cal } = ChromeUtils.import("resource:///modules/calendar/calUtils.jsm");
+
+function CalMimeConverter() {
+  this.wrappedJSObject = this;
+}
+
+CalMimeConverter.prototype = {
+  QueryInterface: ChromeUtils.generateQI(["nsISimpleMimeConverter"]),
+  classID: Components.ID("{c70acb08-464e-4e55-899d-b2c84c5409fa}"),
+
+  mailChannel: null,
+  uri: null,
+
+  convertToHTML(contentType, data) {
+    let parser = Cc["@mozilla.org/calendar/ics-parser;1"].createInstance(Ci.calIIcsParser);
+    parser.parseString(data);
+    let event = null;
+    for (let item of parser.getItems()) {
+      if (item.isEvent()) {
+        if (item.hasProperty("X-MOZ-FAKED-MASTER")) {
+          // if it's a faked master, take any overridden item to get a real occurrence:
+          let exc = item.recurrenceInfo.getExceptionFor(item.startDate);
+          cal.ASSERT(exc, "unexpected!");
+          if (exc) {
+            item = exc;
+          }
+        }
+        event = item;
+        break;
+      }
+    }
+    if (!event) {
+      return "";
+    }
+
+    let itipItem = Cc["@mozilla.org/calendar/itip-item;1"].createInstance(Ci.calIItipItem);
+    itipItem.init(data);
+
+    // this.uri is the message URL that we are processing.
+    if (this.uri) {
+      try {
+        let msgUrl = this.uri.QueryInterface(Ci.nsIMsgMailNewsUrl);
+        itipItem.sender = msgUrl.mimeHeaders.extractHeader("From", false);
+      } catch (exc) {
+        // msgWindow is optional in some scenarios
+        // (e.g. gloda in action, throws NS_ERROR_INVALID_POINTER then)
+      }
+    }
+
+    // msgOverlay needs to be defined irrespectively of the existence of msgWindow to not break
+    // printing of invitation emails
+    let msgOverlay = "";
+
+    if (!Services.prefs.getBoolPref("calendar.itip.newInvitationDisplay")) {
+      let dom = cal.invitation.createInvitationOverlay(event, itipItem);
+      msgOverlay = cal.xml.serializeDOM(dom);
+    }
+
+    this.mailChannel.imipItem = itipItem;
+
+    return msgOverlay;
+  },
+};