Support set_cursor_position action

commit_hash:ceac23ba85c9d1528e011df0b0b85e2ba302c054

.mapping.json

@@ -1178,6 +1178,7 @@
   "client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedHandlerProxy.kt":"divkit/public/client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedHandlerProxy.kt",
   "client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedHideTooltipHandler.kt":"divkit/public/client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedHideTooltipHandler.kt",
   "client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedScrollHandler.kt":"divkit/public/client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedScrollHandler.kt",
+  "client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetCursorPositionHandler.kt":"divkit/public/client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetCursorPositionHandler.kt",
   "client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetStateHandler.kt":"divkit/public/client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetStateHandler.kt",
   "client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetStoredValueHandler.kt":"divkit/public/client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetStoredValueHandler.kt",
   "client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetVariableHandler.kt":"divkit/public/client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetVariableHandler.kt",

client/android/div/src/main/java/com/yandex/div/core/actions/DivActionTypedSetCursorPositionHandler.kt

@@ -0,0 +1,80 @@
+package com.yandex.div.core.actions
+
+import com.yandex.div.core.util.toIntSafely
+import com.yandex.div.core.view2.Div2View
+import com.yandex.div.core.view2.ViewLocator
+import com.yandex.div.core.view2.divs.widgets.DivInputView
+import com.yandex.div.json.expressions.ExpressionResolver
+import com.yandex.div2.DivActionSetCursorPosition
+import com.yandex.div2.DivActionTyped
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+internal class DivActionTypedSetCursorPositionHandler @Inject constructor() : DivActionTypedHandler {
+
+    override fun handleAction(
+        scopeId: String?,
+        action: DivActionTyped,
+        view: Div2View,
+        resolver: ExpressionResolver
+    ): Boolean {
+        return when (action) {
+            is DivActionTyped.SetCursorPosition -> {
+                handleSetCursorPosition(action.value, view, resolver)
+                true
+            }
+            else -> false
+        }
+    }
+
+    private fun handleSetCursorPosition(
+        action: DivActionSetCursorPosition,
+        view: Div2View,
+        resolver: ExpressionResolver
+    ) {
+        val id = action.id.evaluate(resolver)
+        val targets = ViewLocator.findViewsWithTag(view, id)
+            .filterIsInstance<DivInputView>()
+
+        val target = when {
+            targets.isEmpty() -> return view.logError("No input view with id '$id'")
+            targets.size > 1 -> return view.logError("Found multiple input views with id '$id'")
+            else -> targets.first()
+        }
+
+        val textLength = target.length()
+        val start = action.position.start.evaluate(resolver).let {
+            it.normalizePosition(textLength)
+                ?: return view.logError("Wrong start value $it")
+        }
+
+        val end = action.position.end?.evaluate(resolver)?.let {
+            it.normalizePosition(textLength)
+                ?: return view.logError("Wrong end value $it")
+        } ?: start
+
+        target.setCursorPosition(start, end)
+    }
+
+    private fun Long.normalizePosition(textLength: Int): Int? {
+        return when (this) {
+            in 0 .. textLength -> toIntSafely()
+            -1L -> textLength
+            else -> null
+        }
+    }
+
+    private fun DivInputView.setCursorPosition(start: Int, end: Int) {
+        if (!isFocused) {
+            requestFocus()
+            openKeyboard()
+        }
+        setSelection(start, end)
+    }
+
+    private fun Div2View.logError(message: String) = logError(message.toActionError())
+
+    private fun String.toActionError() =
+        RuntimeException("Failed to handle set_cursor_action", IllegalArgumentException(this))
+}

client/android/div/src/main/java/com/yandex/div/core/dagger/DivActionTypedModule.kt

@@ -8,6 +8,7 @@ import com.yandex.div.core.actions.DivActionTypedFocusElementHandler
 import com.yandex.div.core.actions.DivActionTypedHandler
 import com.yandex.div.core.actions.DivActionTypedHideTooltipHandler
 import com.yandex.div.core.actions.DivActionTypedScrollHandler
+import com.yandex.div.core.actions.DivActionTypedSetCursorPositionHandler
 import com.yandex.div.core.actions.DivActionTypedSetStateHandler
 import com.yandex.div.core.actions.DivActionTypedSetStoredValueHandler
 import com.yandex.div.core.actions.DivActionTypedSetVariableHandler
@@ -120,4 +121,10 @@ internal interface DivActionTypedModule {
     fun provideUpdateStructureHandler(
         impl: DivActionTypedUpdateStructureHandler
     ): DivActionTypedHandler
+
+    @Binds
+    @IntoSet
+    fun provideSetCursorPositionActionHandler(
+        impl: DivActionTypedSetCursorPositionHandler
+    ): DivActionTypedHandler
 }

schema/div-action-set-cursor-position.json

@@ -41,6 +41,7 @@
     }
   },
   "platforms": [
+    "android",
     "web"
   ],
   "required": [

test_data/regression_test_data/index.json

@@ -4102,6 +4102,7 @@
     {
       "title": "Input with set_cursor_position actions",
       "platforms": [
+        "android",
         "web"
       ],
       "tags": [