Use ViewCompat support library

Change-Id: I4ba261752750f5087cba810045669512b430b5e0

java/src/com/android/inputmethod/compat/ViewCompatUtils.java

-/*
- * Copyright (C) 2013 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 com.android.inputmethod.compat;
-
-import android.view.View;
-
-import java.lang.reflect.Method;
-
-public final class ViewCompatUtils {
-    // Note that View.LAYOUT_DIRECTION_LTR and View.LAYOUT_DIRECTION_RTL have been introduced in
-    // API level 17 (Build.VERSION_CODE.JELLY_BEAN_MR1).
-    public static final int LAYOUT_DIRECTION_LTR = (Integer)CompatUtils.getFieldValue(null, 0x0,
-            CompatUtils.getField(View.class, "LAYOUT_DIRECTION_LTR"));
-    public static final int LAYOUT_DIRECTION_RTL = (Integer)CompatUtils.getFieldValue(null, 0x1,
-            CompatUtils.getField(View.class, "LAYOUT_DIRECTION_RTL"));
-
-    // Note that View.getPaddingEnd(), View.setPaddingRelative(int,int,int,int), and
-    // View.getLayoutDirection() have been introduced in API level 17
-    // (Build.VERSION_CODE.JELLY_BEAN_MR1).
-    private static final Method METHOD_getPaddingEnd = CompatUtils.getMethod(
-            View.class, "getPaddingEnd");
-    private static final Method METHOD_setPaddingRelative = CompatUtils.getMethod(
-            View.class, "setPaddingRelative",
-            Integer.TYPE, Integer.TYPE, Integer.TYPE, Integer.TYPE);
-    private static final Method METHOD_getLayoutDirection = CompatUtils.getMethod(
-            View.class, "getLayoutDirection");
-
-    private ViewCompatUtils() {
-        // This utility class is not publicly instantiable.
-    }
-
-    public static int getPaddingEnd(final View view) {
-        if (METHOD_getPaddingEnd == null) {
-            return view.getPaddingRight();
-        }
-        return (Integer)CompatUtils.invoke(view, 0, METHOD_getPaddingEnd);
-    }
-
-    public static void setPaddingRelative(final View view, final int start, final int top,
-            final int end, final int bottom) {
-        if (METHOD_setPaddingRelative == null) {
-            view.setPadding(start, top, end, bottom);
-            return;
-        }
-        CompatUtils.invoke(view, null, METHOD_setPaddingRelative, start, top, end, bottom);
-    }
-
-    public static int getLayoutDirection(final View view) {
-        if (METHOD_getLayoutDirection == null) {
-            return LAYOUT_DIRECTION_LTR;
-        }
-        return (Integer)CompatUtils.invoke(view, 0, METHOD_getLayoutDirection);
-    }
-}

java/src/com/android/inputmethod/latin/setup/SetupStartIndicatorView.java

@@ -21,13 +21,13 @@ import android.content.res.ColorStateList;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Path;
+import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
-import com.android.inputmethod.compat.ViewCompatUtils;
 import com.android.inputmethod.latin.R;
 
 public final class SetupStartIndicatorView extends LinearLayout {
@@ -96,13 +96,13 @@ public final class SetupStartIndicatorView extends LinearLayout {
         @Override
         protected void onDraw(final Canvas canvas) {
             super.onDraw(canvas);
-            final int layoutDirection = ViewCompatUtils.getLayoutDirection(this);
+            final int layoutDirection = ViewCompat.getLayoutDirection(this);
             final int width = getWidth();
             final int height = getHeight();
             final float halfHeight = height / 2.0f;
             final Path path = mIndicatorPath;
             path.rewind();
-            if (layoutDirection == ViewCompatUtils.LAYOUT_DIRECTION_RTL) {
+            if (layoutDirection == ViewCompat.LAYOUT_DIRECTION_RTL) {
                 // Left arrow
                 path.moveTo(width, 0.0f);
                 path.lineTo(0.0f, halfHeight);

java/src/com/android/inputmethod/latin/setup/SetupStepIndicatorView.java

@@ -20,10 +20,10 @@ import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.Path;
+import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
 import android.view.View;
 
-import com.android.inputmethod.compat.ViewCompatUtils;
 import com.android.inputmethod.latin.R;
 
 public final class SetupStepIndicatorView extends View {
@@ -38,12 +38,12 @@ public final class SetupStepIndicatorView extends View {
     }
 
     public void setIndicatorPosition(final int stepPos, final int totalStepNum) {
-        final int layoutDirection = ViewCompatUtils.getLayoutDirection(this);
+        final int layoutDirection = ViewCompat.getLayoutDirection(this);
         // The indicator position is the center of the partition that is equally divided into
         // the total step number.
         final float partionWidth = 1.0f / totalStepNum;
         final float pos = stepPos * partionWidth + partionWidth / 2.0f;
-        mXRatio = (layoutDirection == ViewCompatUtils.LAYOUT_DIRECTION_RTL) ? 1.0f - pos : pos;
+        mXRatio = (layoutDirection == ViewCompat.LAYOUT_DIRECTION_RTL) ? 1.0f - pos : pos;
         invalidate();
     }
 

java/src/com/android/inputmethod/latin/setup/SetupWizardActivity.java

@@ -25,6 +25,7 @@ import android.net.Uri;
 import android.os.Bundle;
 import android.os.Message;
 import android.provider.Settings;
+import android.support.v4.view.ViewCompat;
 import android.util.Log;
 import android.view.View;
 import android.view.inputmethod.InputMethodInfo;
@@ -34,7 +35,6 @@ import android.widget.TextView;
 import android.widget.VideoView;
 
 import com.android.inputmethod.compat.TextViewCompatUtils;
-import com.android.inputmethod.compat.ViewCompatUtils;
 import com.android.inputmethod.latin.R;
 import com.android.inputmethod.latin.settings.SettingsActivity;
 import com.android.inputmethod.latin.utils.CollectionUtils;
@@ -449,8 +449,8 @@ public final class SetupWizardActivity extends Activity implements View.OnClickL
             mActionLabel = (TextView)mStepView.findViewById(R.id.setup_step_action_label);
             mActionLabel.setText(res.getString(actionLabel));
             if (actionIcon == 0) {
-                final int paddingEnd = ViewCompatUtils.getPaddingEnd(mActionLabel);
-                ViewCompatUtils.setPaddingRelative(mActionLabel, paddingEnd, 0, paddingEnd, 0);
+                final int paddingEnd = ViewCompat.getPaddingEnd(mActionLabel);
+                ViewCompat.setPaddingRelative(mActionLabel, paddingEnd, 0, paddingEnd, 0);
             } else {
                 TextViewCompatUtils.setCompoundDrawablesRelativeWithIntrinsicBounds(
                         mActionLabel, res.getDrawable(actionIcon), null, null, null);