68 lines
2.8 KiB
Java
68 lines
2.8 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.compat;
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import android.view.View;
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import java.lang.reflect.Method;
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public final class ViewCompatUtils {
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// Note that View.LAYOUT_DIRECTION_LTR and View.LAYOUT_DIRECTION_RTL have been introduced in
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// API level 17 (Build.VERSION_CODE.JELLY_BEAN_MR1).
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public static final int LAYOUT_DIRECTION_LTR = (Integer)CompatUtils.getFieldValue(null, 0x0,
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CompatUtils.getField(View.class, "LAYOUT_DIRECTION_LTR"));
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public static final int LAYOUT_DIRECTION_RTL = (Integer)CompatUtils.getFieldValue(null, 0x1,
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CompatUtils.getField(View.class, "LAYOUT_DIRECTION_RTL"));
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// Note that View.getPaddingEnd(), View.setPaddingRelative(int,int,int,int), and
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// View.getLayoutDirection() have been introduced in API level 17
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// (Build.VERSION_CODE.JELLY_BEAN_MR1).
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private static final Method METHOD_getPaddingEnd = CompatUtils.getMethod(
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View.class, "getPaddingEnd");
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private static final Method METHOD_setPaddingRelative = CompatUtils.getMethod(
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View.class, "setPaddingRelative",
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Integer.TYPE, Integer.TYPE, Integer.TYPE, Integer.TYPE);
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private static final Method METHOD_getLayoutDirection = CompatUtils.getMethod(
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View.class, "getLayoutDirection");
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private ViewCompatUtils() {
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// This utility class is not publicly instantiable.
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}
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public static int getPaddingEnd(final View view) {
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if (METHOD_getPaddingEnd == null) {
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return view.getPaddingRight();
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}
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return (Integer)CompatUtils.invoke(view, 0, METHOD_getPaddingEnd);
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}
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public static void setPaddingRelative(final View view, final int start, final int top,
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final int end, final int bottom) {
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if (METHOD_setPaddingRelative == null) {
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view.setPadding(start, top, end, bottom);
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return;
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}
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CompatUtils.invoke(view, null, METHOD_setPaddingRelative, start, top, end, bottom);
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}
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public static int getLayoutDirection(final View view) {
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if (METHOD_getLayoutDirection == null) {
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return LAYOUT_DIRECTION_LTR;
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}
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return (Integer)CompatUtils.invoke(view, 0, METHOD_getLayoutDirection);
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}
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}
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