1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.inputmethod.compat; 18 19 import android.view.View; 20 21 import java.lang.reflect.Method; 22 23 // TODO: Use {@link android.support.v4.view.ViewCompat} instead of this utility class. 24 // Currently {@link #getPaddingEnd(View)} and {@link #setPaddingRelative(View,int,int,int,int)} 25 // are missing from android-support-v4 static library in KitKat SDK. 26 public final class ViewCompatUtils { 27 // Note that View.getPaddingEnd(), View.setPaddingRelative(int,int,int,int) have been 28 // introduced in API level 17 (Build.VERSION_CODE.JELLY_BEAN_MR1). 29 private static final Method METHOD_getPaddingEnd = CompatUtils.getMethod( 30 View.class, "getPaddingEnd"); 31 private static final Method METHOD_setPaddingRelative = CompatUtils.getMethod( 32 View.class, "setPaddingRelative", 33 int.class, int.class, int.class, int.class); 34 // Note that View.setElevation(float) has been introduced in API level 21. 35 private static final Method METHOD_setElevation = CompatUtils.getMethod( 36 View.class, "setElevation", float.class); 37 // Note that View.setTextAlignment(int) has been introduced in API level 17. 38 private static final Method METHOD_setTextAlignment = CompatUtils.getMethod( 39 View.class, "setTextAlignment", int.class); 40 41 private ViewCompatUtils() { 42 // This utility class is not publicly instantiable. 43 } 44 45 public static int getPaddingEnd(final View view) { 46 if (METHOD_getPaddingEnd == null) { 47 return view.getPaddingRight(); 48 } 49 return (Integer)CompatUtils.invoke(view, 0, METHOD_getPaddingEnd); 50 } 51 52 public static void setPaddingRelative(final View view, final int start, final int top, 53 final int end, final int bottom) { 54 if (METHOD_setPaddingRelative == null) { 55 view.setPadding(start, top, end, bottom); 56 return; 57 } 58 CompatUtils.invoke(view, null, METHOD_setPaddingRelative, start, top, end, bottom); 59 } 60 61 public static void setElevation(final View view, final float elevation) { 62 CompatUtils.invoke(view, null, METHOD_setElevation, elevation); 63 } 64 65 // These TEXT_ALIGNMENT_* constants have been introduced in API 17. 66 public static final int TEXT_ALIGNMENT_INHERIT = 0; 67 public static final int TEXT_ALIGNMENT_GRAVITY = 1; 68 public static final int TEXT_ALIGNMENT_TEXT_START = 2; 69 public static final int TEXT_ALIGNMENT_TEXT_END = 3; 70 public static final int TEXT_ALIGNMENT_CENTER = 4; 71 public static final int TEXT_ALIGNMENT_VIEW_START = 5; 72 public static final int TEXT_ALIGNMENT_VIEW_END = 6; 73 74 public static void setTextAlignment(final View view, final int textAlignment) { 75 CompatUtils.invoke(view, null, METHOD_setTextAlignment, textAlignment); 76 } 77 } 78
