Add doOnEditorAction extension for TextView

Author: romtsn

api/current.txt

@@ -653,6 +653,11 @@ package androidx.core.view {
 
 package androidx.core.widget {
 
+  public final class TextViewKt {
+    ctor public TextViewKt();
+    method public static void doOnEditorAction(android.widget.TextView, int[] actionIds, kotlin.jvm.functions.Function1<? super android.view.KeyEvent,kotlin.Unit> action);
+  }
+
   public final class ToastKt {
     ctor public ToastKt();
     method public static android.widget.Toast toast(android.content.Context, CharSequence text, int duration = "Toast.LENGTH_SHORT");

src/androidTest/java/androidx/core/widget/TextViewTest.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.core.widget
+
+import android.support.test.InstrumentationRegistry
+import android.view.inputmethod.EditorInfo
+import android.widget.TextView
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class TextViewTest {
+    private val textView = TextView(InstrumentationRegistry.getTargetContext())
+
+    @Test fun doOnEditorAction() {
+        val actionDone = EditorInfo.IME_ACTION_DONE
+        val actionNext = EditorInfo.IME_ACTION_NEXT
+        val actionSend = EditorInfo.IME_ACTION_SEND
+        textView.imeOptions = actionDone or actionNext
+
+        var calls = 0
+        textView.doOnEditorAction(actionDone, actionNext) {
+            calls++
+        }
+
+        textView.onEditorAction(actionDone)
+        assertEquals(calls, 1)
+        textView.onEditorAction(actionNext)
+        assertEquals(calls, 2)
+        // as the IME_ACTION_SEND is not in the given actionIds, the listener shouldn't get called
+        textView.onEditorAction(actionSend)
+        assertEquals(calls, 2)
+    }
+}

src/main/java/androidx/core/widget/TextView.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.core.widget
+
+import android.view.KeyEvent
+import android.widget.TextView
+
+/**
+ * Performs the given [action] when an editor action with the given [actionId]
+ * is performed on this [TextView]
+ */
+inline fun TextView.doOnEditorAction(
+    vararg actionIds: Int,
+    crossinline action: (event: KeyEvent?) -> Unit
+) {
+    setOnEditorActionListener { _, id, event ->
+        if (id in actionIds) {
+            action(event)
+            return@setOnEditorActionListener true
+        }
+        return@setOnEditorActionListener false
+    }
+}