133 lines
4.9 KiB
Kotlin
133 lines
4.9 KiB
Kotlin
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.cupcake.ui
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import androidx.compose.foundation.layout.Arrangement
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import androidx.compose.foundation.layout.Column
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import androidx.compose.foundation.layout.Row
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import androidx.compose.foundation.layout.fillMaxHeight
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import androidx.compose.foundation.layout.fillMaxWidth
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import androidx.compose.foundation.layout.padding
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import androidx.compose.foundation.selection.selectable
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import androidx.compose.material3.Button
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import androidx.compose.material3.Divider
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import androidx.compose.material3.OutlinedButton
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import androidx.compose.material3.RadioButton
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import androidx.compose.material3.Text
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.mutableStateOf
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import androidx.compose.runtime.saveable.rememberSaveable
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import androidx.compose.runtime.setValue
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.res.dimensionResource
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import androidx.compose.ui.res.stringResource
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import androidx.compose.ui.tooling.preview.Preview
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import com.example.cupcake.R
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import com.example.cupcake.ui.components.FormattedPriceLabel
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/**
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* Composable that displays the list of items as [RadioButton] options,
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* [onSelectionChanged] lambda that notifies the parent composable when a new value is selected,
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* [onCancelButtonClicked] lambda that cancels the order when user clicks cancel and
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* [onNextButtonClicked] lambda that triggers the navigation to next screen
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*/
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@Composable
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fun SelectOptionScreen(
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subtotal: String,
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options: List<String>,
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onSelectionChanged: (String) -> Unit = {},
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onCancelButtonClicked: () -> Unit = {},
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onNextButtonClicked: () -> Unit = {},
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modifier: Modifier = Modifier
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){
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var selectedValue by rememberSaveable { mutableStateOf("") }
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Column(
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modifier = modifier,
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verticalArrangement = Arrangement.SpaceBetween
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) {
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Column(modifier = Modifier.padding(dimensionResource(R.dimen.padding_medium))){
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options.forEach { item ->
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Row(
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modifier = Modifier.selectable(
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selected = selectedValue == item,
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onClick = {
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selectedValue = item
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onSelectionChanged(item)
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}
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),
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verticalAlignment = Alignment.CenterVertically
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){
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RadioButton(
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selected = selectedValue == item,
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onClick = {
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selectedValue = item
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onSelectionChanged(item)
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}
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)
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Text(item)
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}
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}
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Divider(
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thickness = dimensionResource(R.dimen.thickness_divider),
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modifier = Modifier.padding(bottom = dimensionResource(R.dimen.padding_medium))
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)
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FormattedPriceLabel(
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subtotal = subtotal,
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modifier = Modifier
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.align(Alignment.End)
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.padding(
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top = dimensionResource(R.dimen.padding_medium),
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bottom = dimensionResource(R.dimen.padding_medium)
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)
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)
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}
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Row(
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modifier = Modifier
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.fillMaxWidth()
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.padding(dimensionResource(R.dimen.padding_medium))
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.weight(1f, false),
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horizontalArrangement = Arrangement.spacedBy(dimensionResource(R.dimen.padding_medium)),
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verticalAlignment = Alignment.Bottom
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){
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OutlinedButton(modifier = Modifier.weight(1f), onClick = onCancelButtonClicked) {
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Text(stringResource(R.string.cancel))
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}
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Button(
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modifier = Modifier.weight(1f),
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// the button is enabled when the user makes a selection
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enabled = selectedValue.isNotEmpty(),
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onClick = onNextButtonClicked
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) {
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Text(stringResource(R.string.next))
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}
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}
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}
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}
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@Preview
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@Composable
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fun SelectOptionPreview(){
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SelectOptionScreen(
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subtotal = "299.99",
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options = listOf("Option 1", "Option 2", "Option 3", "Option 4"),
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modifier = Modifier.fillMaxHeight()
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)
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}
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