| /* |
| * Copyright 2020 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.compose.foundation.demos.text |
| |
| import androidx.compose.foundation.lazy.LazyColumn |
| import androidx.compose.foundation.text.BasicTextField |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.savedinstancestate.savedInstanceState |
| import androidx.compose.ui.draw.clipToBounds |
| import androidx.compose.ui.graphics.Color |
| import androidx.compose.ui.text.InternalTextApi |
| import androidx.compose.ui.text.TextStyle |
| |
| @Composable |
| fun BasicTextFieldMinMaxDemo() { |
| LazyColumn { |
| item { |
| TagLine("empty text, no maxLines") |
| TextFieldWithMaxLines("", maxLines = Int.MAX_VALUE) |
| } |
| item { |
| TagLine("maxLines == line count") |
| TextFieldWithMaxLines("abc", maxLines = 1) |
| } |
| item { |
| TagLine("empty text, maxLines > line count") |
| TextFieldWithMaxLines("", maxLines = 2) |
| } |
| item { |
| TagLine("maxLines > line count") |
| TextFieldWithMaxLines("abc", maxLines = 4) |
| } |
| item { |
| TagLine("maxLines < line count") |
| TextFieldWithMaxLines("abc".repeat(20), maxLines = 1) |
| } |
| } |
| } |
| |
| @Composable |
| @OptIn(InternalTextApi::class) |
| private fun TextFieldWithMaxLines(str: String? = null, maxLines: Int) { |
| val state = savedInstanceState { str ?: "abc ".repeat(20) } |
| BasicTextField( |
| modifier = demoTextFieldModifiers.clipToBounds(), |
| value = state.value, |
| onValueChange = { state.value = it }, |
| textStyle = TextStyle(fontSize = fontSize8), |
| cursorColor = Color.Red, |
| maxLines = maxLines |
| ) |
| } |