Initial commit

Libraries/RKBackendNode/queryLayoutByID.js

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+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @providesModule queryLayoutByID
+ */
+'use strict';
+
+var ReactIOSTagHandles = require('ReactIOSTagHandles');
+var RKUIManager = require('NativeModulesDeprecated').RKUIManager;
+
+/**
+ * Queries the layout of a view. The layout does not reflect the element as
+ * seen by the user, rather it reflects the position within the layout system,
+ * before any transforms are applied.
+ *
+ * The only other requirement is that the `pageX, pageY` values be in the same
+ * coordinate system that events' `pageX/Y` are reported. That means that for
+ * the web, `pageXOffset/pageYOffset` should be added to to
+ * getBoundingClientRect to make consistent with touches.
+ *
+ *  var pageXOffset = window.pageXOffset;
+ *  var pageYOffset = window.pageYOffset;
+ *
+ * This is an IOS specific implementation.
+ *
+ * @param {string} rootNodeID ID of the platform specific node to be measured.
+ * @param {function} onError `func(error)`
+ * @param {function} onSuccess `func(left, top, width, height, pageX, pageY)`
+ */
+var queryLayoutByID = function(rootNodeID, onError, onSuccess) {
+  // Native bridge doesn't *yet* surface errors.
+  RKUIManager.measure(
+    ReactIOSTagHandles.rootNodeIDToTag[rootNodeID],
+    onSuccess
+  );
+};
+
+module.exports = queryLayoutByID;
+