1 files changed, 95 insertions, 0 deletions
diff --git a/mobile/android/actors/GeckoViewClipboardPermissionChild.sys.mjs b/mobile/android/actors/GeckoViewClipboardPermissionChild.sys.mjs
new file mode 100644
index 0000000000..56e7a39e7b
--- /dev/null
+++ b/mobile/android/actors/GeckoViewClipboardPermissionChild.sys.mjs
@@ -0,0 +1,95 @@
+/* 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/. */
+
+import { GeckoViewActorChild } from "resource://gre/modules/GeckoViewActorChild.sys.mjs";
+
+export class GeckoViewClipboardPermissionChild extends GeckoViewActorChild {
+  constructor() {
+    super();
+    this._pendingPromise = null;
+  }
+
+  async promptPermissionForClipboardRead() {
+    const uri = this.contentWindow.location.href;
+
+    const { x, y } = await this.sendQuery(
+      "ClipboardReadTextPaste:GetLastPointerLocation"
+    );
+
+    const promise = this.eventDispatcher.sendRequestForResult({
+      type: "GeckoView:ClipboardPermissionRequest",
+      uri,
+      screenPoint: {
+        x,
+        y,
+      },
+    });
+
+    this._pendingPromise = promise;
+
+    try {
+      const allowOrDeny = await promise;
+      if (this._pendingPromise !== promise) {
+        // Current pending promise is newer. So it means that this promise
+        // is already resolved or rejected. Do nothing.
+        return;
+      }
+      this.contentWindow.navigator.clipboard.onUserReactedToPasteMenuPopup(
+        allowOrDeny
+      );
+      this._pendingPromise = null;
+    } catch (error) {
+      debug`Permission error: ${error}`;
+
+      if (this._pendingPromise !== promise) {
+        // Current pending promise is newer. So it means that this promise
+        // is already resolved or rejected. Do nothing.
+        return;
+      }
+
+      this.contentWindow.navigator.clipboard.onUserReactedToPasteMenuPopup(
+        false
+      );
+      this._pendingPromise = null;
+    }
+  }
+
+  handleEvent(aEvent) {
+    debug`handleEvent: ${aEvent.type}`;
+
+    switch (aEvent.type) {
+      case "MozClipboardReadPaste":
+        if (aEvent.isTrusted) {
+          this.promptPermissionForClipboardRead();
+        }
+        break;
+
+      // page hide or deactivate cancel clipboard permission.
+      case "pagehide":
+      // fallthrough for the next three events.
+      case "deactivate":
+      case "mousedown":
+      case "mozvisualscroll":
+        // Gecko desktop uses XUL popup to show clipboard permission prompt.
+        // So it will be closed automatically by scroll and other user
+        // activation. So GeckoView has to close permission prompt by some user
+        // activations, too.
+
+        this.eventDispatcher.sendRequest({
+          type: "GeckoView:DismissClipboardPermissionRequest",
+        });
+        if (this._pendingPromise) {
+          this.contentWindow.navigator.clipboard.onUserReactedToPasteMenuPopup(
+            false
+          );
+          this._pendingPromise = null;
+        }
+        break;
+    }
+  }
+}
+
+const { debug, warn } = GeckoViewClipboardPermissionChild.initLogging(
+  "GeckoViewClipboardPermissionChild"
+);