| /* |
| * 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); |
| } |
| } |