1 /* <lambda>null2 * Copyright (C) 2024 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 @file:OptIn(ExperimentalComposeUiApi::class) 18 19 package com.android.systemui.common.ui.compose 20 21 import android.annotation.UserIdInt 22 import android.os.UserHandle 23 import android.view.inputmethod.EditorInfo 24 import android.view.inputmethod.InputConnection 25 import androidx.compose.runtime.Composable 26 import androidx.compose.ui.ExperimentalComposeUiApi 27 import androidx.compose.ui.platform.InterceptPlatformTextInput 28 import androidx.compose.ui.platform.PlatformTextInputMethodRequest 29 30 /** 31 * Wrapper for input connection composables that need to be aware of the selected user to connect to 32 * the correct instance of on-device services like autofill, autocorrect, etc. 33 * 34 * Usage: 35 * ``` 36 * @Composable 37 * fun YourFunction(viewModel: YourViewModel) { 38 * val selectedUserId by viewModel.selectedUserId.collectAsStateWithLifecycle() 39 * 40 * SelectedUserAwareInputConnection(selectedUserId) { 41 * TextField(...) 42 * } 43 * } 44 * ``` 45 */ 46 @Composable 47 fun SelectedUserAwareInputConnection( 48 @UserIdInt selectedUserId: Int, 49 content: @Composable () -> Unit, 50 ) { 51 InterceptPlatformTextInput( 52 interceptor = { request, nextHandler -> 53 // Create a new request to wrap the incoming one with some custom logic. 54 val modifiedRequest = 55 object : PlatformTextInputMethodRequest { 56 override fun createInputConnection(outAttributes: EditorInfo): InputConnection { 57 val inputConnection = request.createInputConnection(outAttributes) 58 // After the original request finishes initializing the EditorInfo we can 59 // customize it. If we needed to we could also wrap the InputConnection 60 // before 61 // returning it. 62 updateEditorInfo(outAttributes) 63 return inputConnection 64 } 65 66 fun updateEditorInfo(outAttributes: EditorInfo) { 67 outAttributes.targetInputMethodUser = UserHandle.of(selectedUserId) 68 } 69 } 70 71 // Send our wrapping request to the next handler, which could be the system or another 72 // interceptor up the tree. 73 nextHandler.startInputMethod(modifiedRequest) 74 } 75 ) { 76 content() 77 } 78 } 79