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Original file line number Diff line number Diff line change
Expand Up @@ -593,6 +593,16 @@ open class GestureHandler {
// generated faster than they can be treated by JS thread
eventCoalescingKey = nextEventCoalescingKey++
}

check(hostDetectorView != null || orchestrator != null) {
"Manually handled gesture had not been assigned to any detector"
}

if (orchestrator == null) {
// If the state is set manually, the handler may not have been fully recorded by the orchestrator.
hostDetectorView?.recordHandlerIfNotPresent(this)
}

orchestrator!!.onHandlerStateChange(this, newState, oldState)
onStateChange(newState, oldState)
}
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Original file line number Diff line number Diff line change
Expand Up @@ -442,7 +442,7 @@ class GestureHandlerOrchestrator(
}
}

private fun recordHandlerIfNotPresent(handler: GestureHandler, view: View) {
fun recordHandlerIfNotPresent(handler: GestureHandler, view: View?) {
if (gestureHandlers.contains(handler)) {
return
}
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ package com.swmansion.gesturehandler.react

import android.content.Context
import android.view.View
import android.view.ViewParent
import com.facebook.react.bridge.ReadableArray
import com.facebook.react.uimanager.ThemedReactContext
import com.facebook.react.uimanager.UIManagerHelper
Expand Down Expand Up @@ -202,7 +203,23 @@ class RNGestureHandlerDetectorView(context: Context) : ReactViewGroup(context) {
child.value.clear()
}
}
fun recordHandlerIfNotPresent(handler: GestureHandler) {
findGestureHandlerRootView()?.recordHandlerIfNotPresent(handler)
}

private fun findGestureHandlerRootView(): RNGestureHandlerRootView? {
var parent: ViewParent? = this.parent
var gestureHandlerRootView: RNGestureHandlerRootView? = null

while (parent != null) {
if (parent is RNGestureHandlerRootView) {
gestureHandlerRootView = parent
}
parent = parent.parent
}

return gestureHandlerRootView
}
private fun ReadableArray.mapVirtualChildren(): List<VirtualChildren> = List(size()) { i ->
val child = getMap(i) ?: return@List null
val handlerTags = child.getArray("handlerTags")?.toIntList().orEmpty()
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Original file line number Diff line number Diff line change
Expand Up @@ -141,6 +141,10 @@ class RNGestureHandlerRootHelper(private val context: ReactContext, wrappedView:
orchestrator?.activateNativeHandlersForView(view)
}

fun recordHandlerIfNotPresent(handler: GestureHandler) {
orchestrator?.recordHandlerIfNotPresent(handler, null)
}

companion object {
private const val MIN_ALPHA_FOR_TOUCH = 0.1f
private fun findRootViewTag(viewGroup: ViewGroup): ViewGroup {
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ import com.facebook.react.bridge.UiThreadUtil
import com.facebook.react.common.ReactConstants
import com.facebook.react.uimanager.RootView
import com.facebook.react.views.view.ReactViewGroup
import com.swmansion.gesturehandler.core.GestureHandler

class RNGestureHandlerRootView(context: Context?) : ReactViewGroup(context) {
private var moduleId: Int = -1
Expand Down Expand Up @@ -39,6 +40,10 @@ class RNGestureHandlerRootView(context: Context?) : ReactViewGroup(context) {
rootHelper?.tearDown()
}

fun recordHandlerIfNotPresent(handler: GestureHandler) {
rootHelper?.recordHandlerIfNotPresent(handler)
}

override fun dispatchTouchEvent(event: MotionEvent) = if (rootViewEnabled && rootHelper!!.dispatchTouchEvent(event)) {
true
} else {
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