TwoTargetSwitchPreference.kt

/*
 * Copyright 2023 Google LLC
 *
 * 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
 *
 *     https://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 me.zhanghai.compose.preference

import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyListScope
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.outlined.Info
import androidx.compose.material3.Icon
import androidx.compose.material3.Switch
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.MutableState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

inline fun LazyListScope.twoTargetSwitchPreference(
    key: String,
    defaultValue: Boolean,
    crossinline title: @Composable (Boolean) -> Unit,
    modifier: Modifier = Modifier.fillMaxWidth(),
    crossinline rememberState: @Composable () -> MutableState<Boolean> = {
        rememberPreferenceState(key, defaultValue)
    },
    noinline enabled: (Boolean) -> Boolean = { true },
    noinline icon: @Composable ((Boolean) -> Unit)? = null,
    noinline summary: @Composable ((Boolean) -> Unit)? = null,
    noinline switchEnabled: (Boolean) -> Boolean = enabled,
    noinline onClick: ((Boolean) -> Unit)? = null,
) {
    item(key = key, contentType = "TwoTargetSwitchPreference") {
        val state = rememberState()
        val value by state
        TwoTargetSwitchPreference(
            state = state,
            title = { title(value) },
            modifier = modifier,
            enabled = enabled(value),
            icon = icon?.let { { it(value) } },
            summary = summary?.let { { it(value) } },
            switchEnabled = switchEnabled(value),
            onClick = onClick?.let { { it(value) } },
        )
    }
}

@Composable
fun TwoTargetSwitchPreference(
    state: MutableState<Boolean>,
    title: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    icon: @Composable (() -> Unit)? = null,
    summary: @Composable (() -> Unit)? = null,
    switchEnabled: Boolean = enabled,
    onClick: (() -> Unit)? = null,
) {
    var value by state
    TwoTargetSwitchPreference(
        value = value,
        onValueChange = { value = it },
        title = title,
        modifier = modifier,
        enabled = enabled,
        icon = icon,
        summary = summary,
        switchEnabled = switchEnabled,
        onClick = onClick,
    )
}

@Composable
fun TwoTargetSwitchPreference(
    value: Boolean,
    onValueChange: (Boolean) -> Unit,
    title: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    icon: @Composable (() -> Unit)? = null,
    summary: @Composable (() -> Unit)? = null,
    switchEnabled: Boolean = enabled,
    onClick: (() -> Unit)? = null,
) {
    TwoTargetPreference(
        title = title,
        secondTarget = {
            val theme = LocalPreferenceTheme.current
            Switch(
                checked = value,
                onCheckedChange = onValueChange,
                modifier =
                    Modifier.padding(
                        theme.padding
                            .copy(start = theme.horizontalSpacing)
                            .offset(vertical = (-8).dp)
                    ),
                enabled = switchEnabled,
            )
        },
        modifier = modifier,
        enabled = enabled,
        icon = icon,
        summary = summary,
        onClick = onClick,
    )
}

@Composable
@Preview(showBackground = true)
private fun TwoTargetSwitchPreferencePreview() {
    ProvidePreferenceTheme {
        TwoTargetSwitchPreference(
            state = remember { mutableStateOf(true) },
            title = { Text(text = "Two target switch preference") },
            modifier = Modifier.fillMaxWidth(),
            icon = { Icon(imageVector = Icons.Outlined.Info, contentDescription = null) },
            summary = { Text(text = "Summary") },
        )
    }
}