[Text Fields] Pan window so that keyboard doesn't hide helper/error views.

It doesn't pan if the user can already scroll (for example if it's in a scroll view).

PiperOrigin-RevId: 286424421

Author: leticiarossi

catalog/java/io/material/catalog/textfield/res/layout/cat_textfield_content.xml

@@ -15,12 +15,9 @@
   ~ limitations under the License.
   -->
 
-<ScrollView
+  <LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-  <LinearLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:layout_margin="@dimen/cat_textfield_standard_spacing"
@@ -82,4 +79,3 @@
           android:layout_height="wrap_content"/>
     </com.google.android.material.textfield.TextInputLayout>
   </LinearLayout>
-</ScrollView>

lib/java/com/google/android/material/textfield/TextInputEditText.java

@@ -19,6 +19,8 @@
 import com.google.android.material.R;
 
 import android.content.Context;
+import android.graphics.Point;
+import android.graphics.Rect;
 import android.os.Build;
 import android.os.Build.VERSION;
 import androidx.annotation.NonNull;
@@ -41,6 +43,8 @@
  */
 public class TextInputEditText extends AppCompatEditText {
 
+  private final Rect parentRect = new Rect();
+
   public TextInputEditText(Context context) {
     this(context, null);
   }
@@ -111,6 +115,43 @@ private CharSequence getHintFromLayout() {
     return (layout != null) ? layout.getHint() : null;
   }
 
+  @Override
+  public void getFocusedRect(@Nullable Rect r) {
+    super.getFocusedRect(r);
+    TextInputLayout textInputLayout = getTextInputLayout();
+    if (textInputLayout != null && r != null) {
+      textInputLayout.getFocusedRect(parentRect);
+      r.bottom = parentRect.bottom;
+    }
+  }
+
+  @Override
+  public boolean getGlobalVisibleRect(@Nullable Rect r, @Nullable Point globalOffset) {
+    boolean result =  super.getGlobalVisibleRect(r, globalOffset);
+    TextInputLayout textInputLayout = getTextInputLayout();
+    if (textInputLayout != null && r != null) {
+      textInputLayout.getGlobalVisibleRect(parentRect, globalOffset);
+      r.bottom = parentRect.bottom;
+    }
+    return result;
+  }
+
+  @Override
+  public boolean requestRectangleOnScreen(@Nullable Rect rectangle) {
+    boolean result = super.requestRectangleOnScreen(rectangle);
+    TextInputLayout textInputLayout = getTextInputLayout();
+    if (textInputLayout != null) {
+      parentRect.set(
+          0,
+          textInputLayout.getHeight()
+              - getResources().getDimensionPixelOffset(R.dimen.mtrl_edittext_rectangle_top_offset),
+          textInputLayout.getWidth(),
+          textInputLayout.getHeight());
+      textInputLayout.requestRectangleOnScreen(parentRect, true);
+    }
+     return result;
+  }
+
   @Override
   public void onInitializeAccessibilityNodeInfo(@NonNull AccessibilityNodeInfo info) {
     super.onInitializeAccessibilityNodeInfo(info);

lib/java/com/google/android/material/textfield/res/values/dimens.xml

@@ -28,6 +28,8 @@
   <dimen name="mtrl_textinput_box_stroke_width_focused">2dp</dimen>
   <dimen name="mtrl_textinput_box_label_cutout_padding">4dp</dimen>
 
+  <dimen name="mtrl_edittext_rectangle_top_offset">12dp</dimen>
+
   <!-- The icon views' minimum width is 48dp and since each icon is 24dp wide we need a 4dp margin
        to have the appropriate spacing before and after each icon. -->
   <dimen name="mtrl_textinput_end_icon_margin_start">4dp</dimen>