| /* |
| * Copyright 2019 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 androidx.ui.text.demos |
| |
| import androidx.compose.Composable |
| import androidx.compose.ambient |
| import androidx.compose.state |
| import androidx.compose.unaryPlus |
| import androidx.ui.core.FocusManagerAmbient |
| import androidx.ui.core.TextField |
| import androidx.ui.core.sp |
| import androidx.ui.foundation.VerticalScroller |
| import androidx.ui.layout.CrossAxisAlignment |
| import androidx.ui.graphics.Color |
| import androidx.ui.input.EditorStyle |
| import androidx.ui.input.ImeAction |
| import androidx.ui.layout.Column |
| import androidx.ui.text.TextStyle |
| |
| @Composable |
| fun TextFieldFocusTransition() { |
| VerticalScroller { |
| Column(crossAxisAlignment = CrossAxisAlignment.Start) { |
| TextFieldWithFocusId("Focus 1", "Focus 2") |
| TextFieldWithFocusId("Focus 2", "Focus 3") |
| TextFieldWithFocusId("Focus 3", "Focus 4") |
| TextFieldWithFocusId("Focus 4", "Focus 5") |
| TextFieldWithFocusId("Focus 5", "Focus 6") |
| TextFieldWithFocusId("Focus 6", "Focus 1") |
| } |
| } |
| } |
| |
| @Composable |
| private fun TextFieldWithFocusId(focusID: String, nextFocus: String) { |
| val focusManager = +ambient(FocusManagerAmbient) |
| val state = +state { "Focus ID: $focusID" } |
| val focused = +state { false } |
| val color = if (focused.value) { |
| Color.Red |
| } else { |
| Color.Black |
| } |
| TextField( |
| value = state.value, |
| editorStyle = EditorStyle(textStyle = TextStyle(color = color, fontSize = 32.sp)), |
| onValueChange = { |
| state.value = it |
| }, |
| onFocus = { focused.value = true }, |
| onBlur = { focused.value = false }, |
| imeAction = ImeAction.Next, |
| focusIdentifier = focusID, |
| onImeActionPerformed = { |
| if (it == ImeAction.Next) |
| focusManager.requestFocusById(nextFocus) |
| } |
| ) |
| } |
