measureInWindow: function(callback: MeasureInWindowOnSuccessCallback) {
let maybeInstance;
// Fiber errors if findNodeHandle is called for an umounted component.
// Tests using ReactTestRenderer will trigger this case indirectly.
// Mimicking stack behavior, we should silently ignore this case.
// TODO Fix ReactTestRenderer so we can remove this try/catch.
try {
maybeInstance = findHostInstance(this);
} catch (error) {}
// If there is no host component beneath this we should fail silently.
// This is not an error; it could mean a class component rendered null.
if (maybeInstance == null) {
return;
}
if (maybeInstance.canonical) {
// We can't call FabricUIManager here because it won't be loaded in paper
// at initialization time. See https://github.com/facebook/react/pull/15490
// for more info.
nativeFabricUIManager.measureInWindow(
maybeInstance.node,
mountSafeCallback_NOT_REALLY_SAFE(this, callback),
);
} else {
UIManager.measureInWindow(
findNodeHandle(this),
mountSafeCallback_NOT_REALLY_SAFE(this, callback),
);
}
},
measureInWindow: function(callback: MeasureInWindowOnSuccessCallback) {
UIManager.measureInWindow(
findNumericNodeHandle(this),
mountSafeCallback(this, callback),
);
},
measureInWindow(callback: MeasureInWindowOnSuccessCallback) {
UIManager.measureInWindow(
this._nativeTag,
mountSafeCallback_NOT_REALLY_SAFE(this, callback),
);
}
measureInWindow: function (callback) {
UIManager.measureInWindow(findNodeHandle(this), mountSafeCallback(this, callback));
},
/**
* Measures the on-screen location and dimensions. Even if the React Native
* root view is embedded within another native view, this method will give you
* the absolute coordinates measured from the window. If successful, the
* callback will be called asynchronously with the following arguments:
*
* - x
* - y
* - width
* - height
*
* These values are not available until after natives rendering completes.
*/
measureInWindow(callback: MeasureInWindowOnSuccessCallback): void {
UIManager.measureInWindow(
findNodeHandle(this),
mountSafeCallback_NOT_REALLY_SAFE(this, callback),
);
}