Simplify CursorAnchorInfoCompatWrapper

With this CL, we will use CursorAnchorInfoCompatWrapper just to
avoid unexpected NoClassDefFoundError due to the direct
dependency CursorAnchorInfo class, which is available only on
API level 21 and later.

Change-Id: I254ff83f1ca41daa21d0666b5824af22ba529022

1 files changed, 29 insertions, 2 deletions

diff --git a/java/src/com/android/inputmethod/latin/utils/CursorAnchorInfoUtils.java b/java/src/com/android/inputmethod/latin/utils/CursorAnchorInfoUtils.java
index 9dc0524a2..e05618901 100644
--- a/java/src/com/android/inputmethod/latin/utils/CursorAnchorInfoUtils.java
+++ b/java/src/com/android/inputmethod/latin/utils/CursorAnchorInfoUtils.java
@@ -16,10 +16,12 @@
 
 package com.android.inputmethod.latin.utils;
 
+import android.annotation.TargetApi;
 import android.graphics.Matrix;
 import android.graphics.Rect;
 import android.inputmethodservice.ExtractEditText;
 import android.inputmethodservice.InputMethodService;
+import android.os.Build;
 import android.text.Layout;
 import android.text.Spannable;
 import android.view.View;
@@ -27,6 +29,12 @@ import android.view.ViewParent;
 import android.view.inputmethod.CursorAnchorInfo;
 import android.widget.TextView;
 
+import com.android.inputmethod.compat.BuildCompatUtils;
+import com.android.inputmethod.compat.CursorAnchorInfoCompatWrapper;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
 /**
  * This class allows input methods to extract {@link CursorAnchorInfo} directly from the given
  * {@link TextView}. This is useful and even necessary to support full-screen mode where the default
@@ -77,13 +85,32 @@ public final class CursorAnchorInfoUtils {
     }
 
     /**
+     * Extracts {@link CursorAnchorInfoCompatWrapper} from the given {@link TextView}.
+     * @param textView the target text view from which {@link CursorAnchorInfoCompatWrapper} is to
+     * be extracted.
+     * @return the {@link CursorAnchorInfoCompatWrapper} object based on the current layout.
+     * {@code null} if {@code Build.VERSION.SDK_INT} is 20 or prior or {@link TextView} is not
+     * ready to provide layout information.
+     */
+    @Nullable
+    public static CursorAnchorInfoCompatWrapper extractFromTextView(
+            @Nonnull final TextView textView) {
+        if (Build.VERSION.SDK_INT < BuildCompatUtils.VERSION_CODES_LXX) {
+            return null;
+        }
+        return CursorAnchorInfoCompatWrapper.wrap(extractFromTextViewInternal(textView));
+    }
+
+    /**
      * Returns {@link CursorAnchorInfo} from the given {@link TextView}.
      * @param textView the target text view from which {@link CursorAnchorInfo} is to be extracted.
      * @return the {@link CursorAnchorInfo} object based on the current layout. {@code null} if it
      * is not feasible.
      */
-    public static CursorAnchorInfo getCursorAnchorInfo(final TextView textView) {
-        Layout layout = textView.getLayout();
+    @TargetApi(BuildCompatUtils.VERSION_CODES_LXX)
+    @Nullable
+    private static CursorAnchorInfo extractFromTextViewInternal(@Nonnull final TextView textView) {
+        final Layout layout = textView.getLayout();
         if (layout == null) {
             return null;
         }