1 files changed, 38 insertions, 0 deletions
diff --git a/app/src/main/assets/js/document_watcher.js b/app/src/main/assets/js/document_watcher.js
new file mode 100644
index 00000000..4613dc87
--- /dev/null
+++ b/app/src/main/assets/js/document_watcher.js
@@ -0,0 +1,38 @@
+"use strict";
+
+(function () {
+  // emit key once half the viewport is covered
+  var isReady, observer;
+
+  isReady = function isReady() {
+    if (!((typeof document !== "undefined" && document !== null ? document.body : void 0) != null)) {
+      return false;
+    }
+    return document.body.scrollHeight > innerHeight + 100;
+  };
+
+  if (isReady()) {
+    console.log("Already ready");
+    if (typeof Frost !== "undefined" && Frost !== null) {
+      Frost.isReady();
+    }
+    return;
+  }
+
+  console.log("Injected document watcher");
+
+  observer = new MutationObserver(function () {
+    if (isReady()) {
+      observer.disconnect();
+      if (typeof Frost !== "undefined" && Frost !== null) {
+        Frost.isReady();
+      }
+      return console.log("Documented surpassed height in " + performance.now());
+    }
+  });
+
+  observer.observe(document, {
+    childList: true,
+    subtree: true
+  });
+}).call(undefined);
+\ No newline at end of file