1 // Copyright 2015-present 650 Industries. All rights reserved.
2 package host.exp.exponent.utils
3 
4 import android.graphics.Rect
5 import android.util.Log
6 import android.view.View
7 import androidx.test.espresso.ViewAction
8 import androidx.test.espresso.matcher.ViewMatchers
9 import android.widget.ScrollView
10 import android.widget.HorizontalScrollView
11 import androidx.test.espresso.PerformException
12 import androidx.test.espresso.UiController
13 import androidx.test.espresso.util.HumanReadables
14 import androidx.test.espresso.action.ViewActions
15 import org.hamcrest.Matcher
16 import org.hamcrest.Matchers
17 import java.lang.RuntimeException
18 
19 class ExponentScrollToAction : ViewAction {
20   override fun getConstraints(): Matcher<View> {
21     return Matchers.allOf(
22       ViewMatchers.withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE),
23       ViewMatchers.isDescendantOfA(
24         Matchers.anyOf(
25           ViewMatchers.isAssignableFrom(ScrollView::class.java),
26           ViewMatchers.isAssignableFrom(
27             HorizontalScrollView::class.java
28           ),
29           ViewMatchers.withClassName(Matchers.containsString("ScrollView"))
30         )
31       )
32     )
33   }
34 
35   override fun perform(uiController: UiController, view: View) {
36     if (ViewMatchers.isDisplayingAtLeast(90).matches(view)) {
37       Log.i(TAG, "View is already displayed. Returning.")
38       return
39     }
40     val rect = Rect()
41     view.getDrawingRect(rect)
42     if (!view.requestRectangleOnScreen(rect, true /* immediate */)) {
43       Log.w(TAG, "Scrolling to view was requested, but none of the parents scrolled.")
44     }
45     uiController.loopMainThreadUntilIdle()
46     if (!ViewMatchers.isDisplayingAtLeast(90).matches(view)) {
47       throw PerformException.Builder()
48         .withActionDescription(this.description)
49         .withViewDescription(HumanReadables.describe(view))
50         .withCause(
51           RuntimeException(
52             "Scrolling to view was attempted, but the view is not displayed"
53           )
54         )
55         .build()
56     }
57   }
58 
59   override fun getDescription(): String {
60     return "scroll to"
61   }
62 
63   companion object {
64     private val TAG = ExponentScrollToAction::class.java.simpleName
65     fun exponentScrollTo(): ViewAction {
66       return ViewActions.actionWithAssertions(ExponentScrollToAction())
67     }
68   }
69 }
70