1 files changed, 52 insertions, 0 deletions
diff --git a/toolkit/components/pdfjs/content/PdfjsChild.sys.mjs b/toolkit/components/pdfjs/content/PdfjsChild.sys.mjs
new file mode 100644
index 0000000000..0b5276ec12
--- /dev/null
+++ b/toolkit/components/pdfjs/content/PdfjsChild.sys.mjs
@@ -0,0 +1,52 @@
+/* Copyright 2012 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export class PdfjsChild extends JSWindowActorChild {
+  init(supportsFind) {
+    if (supportsFind) {
+      this.sendAsyncMessage("PDFJS:Parent:addEventListener");
+    }
+  }
+
+  dispatchEvent(type, detail) {
+    const contentWindow = this.contentWindow;
+    const forward = contentWindow.document.createEvent("CustomEvent");
+    forward.initCustomEvent(type, true, true, detail);
+    contentWindow.dispatchEvent(forward);
+  }
+
+  receiveMessage(msg) {
+    switch (msg.name) {
+      case "PDFJS:Child:handleEvent": {
+        let detail = Cu.cloneInto(msg.data.detail, this.contentWindow);
+        this.dispatchEvent(msg.data.type, detail);
+        break;
+      }
+
+      case "PDFJS:Editing":
+        let data = Cu.cloneInto(msg.data, this.contentWindow);
+        this.dispatchEvent("editingaction", data);
+        break;
+      case "PDFJS:ZoomIn":
+      case "PDFJS:ZoomOut":
+      case "PDFJS:ZoomReset":
+      case "PDFJS:Save": {
+        const type = msg.name.split("PDFJS:")[1].toLowerCase();
+        this.dispatchEvent(type, null);
+        break;
+      }
+    }
+  }
+}