61 lines
1.7 KiB
JavaScript
61 lines
1.7 KiB
JavaScript
|
/**
|
||
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This source code is licensed under the BSD-style license found in the
|
||
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
||
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
||
|
|
*
|
||
|
|
* @providesModule queryLayoutByID
|
||
|
|
* @flow
|
||
|
|
* @format
|
||
|
|
*/
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
var UIManager = require('UIManager');
|
||
|
|
|
||
|
|
type OnSuccessCallback = (
|
||
|
|
left: number,
|
||
|
|
top: number,
|
||
|
|
width: number,
|
||
|
|
height: number,
|
||
|
|
pageX: number,
|
||
|
|
pageY: number,
|
||
|
|
) => void;
|
||
|
|
|
||
|
|
// I don't know what type error is...
|
||
|
|
type OnErrorCallback = (error: any) => void;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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 {number} tag 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(
|
||
|
|
tag: ?number,
|
||
|
|
onError: OnErrorCallback,
|
||
|
|
onSuccess: OnSuccessCallback,
|
||
|
|
): void {
|
||
|
|
if (tag == null) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
// Native bridge doesn't *yet* surface errors.
|
||
|
|
UIManager.measure(tag, onSuccess);
|
||
|
|
};
|
||
|
|
|
||
|
|
module.exports = queryLayoutByID;
|