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 androidx.core.text; 18 19 /** 20 * Interface for objects that use a heuristic for guessing at the paragraph direction by examining text. 21 */ 22 public interface TextDirectionHeuristicCompat { 23 /** 24 * Guess if a chars array is in the RTL direction or not. 25 * 26 * @param array the char array. 27 * @param start start index, inclusive. 28 * @param count the length to check, must not be negative and not greater than 29 * {@code array.length - start}. 30 * @return true if all chars in the range are to be considered in a RTL direction, 31 * false otherwise. 32 */ 33 boolean isRtl(char[] array, int start, int count); 34 35 /** 36 * Guess if a {@code CharSequence} is in the RTL direction or not. 37 * 38 * @param cs the CharSequence. 39 * @param start start index, inclusive. 40 * @param count the length to check, must not be negative and not greater than 41 * {@code CharSequence.length() - start}. 42 * @return true if all chars in the range are to be considered in a RTL direction, 43 * false otherwise. 44 */ 45 boolean isRtl(CharSequence cs, int start, int count); 46 } 47
