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Merge pull request #208 from Infomaniak/generic-button
feat: Add a generic button component
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app/src/main/java/com/infomaniak/swisstransfer/ui/components/SwissTransferButton.kt
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| /* | ||
| * Infomaniak SwissTransfer - Android | ||
| * Copyright (C) 2024 Infomaniak Network SA | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package com.infomaniak.swisstransfer.ui.components | ||
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||
| import androidx.compose.foundation.layout.* | ||
| import androidx.compose.material3.* | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.derivedStateOf | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.draw.alpha | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.unit.dp | ||
| import com.infomaniak.swisstransfer.ui.theme.CustomShapes | ||
| import com.infomaniak.swisstransfer.ui.theme.SwissTransferTheme | ||
| import com.infomaniak.swisstransfer.ui.utils.PreviewLightAndDark | ||
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|
|
||
| /** | ||
| * Most basic and customizable button component. | ||
| * | ||
| * Only needed for exceptional edge cases where [LargeButton] or [SmallButton] are not enough and we need more control over the | ||
| * button component. | ||
| * | ||
| * Specifying a progress has the priority over specifying showIndeterminateProgress. | ||
| */ | ||
| @Composable | ||
| fun SwissTransferButton( | ||
| modifier: Modifier = Modifier, | ||
| style: ButtonType = ButtonType.PRIMARY, | ||
| enabled: () -> Boolean = { true }, | ||
| showIndeterminateProgress: () -> Boolean = { false }, | ||
| progress: (() -> Float)? = null, | ||
| onClick: () -> Unit, | ||
| contentPadding: PaddingValues = ButtonDefaults.ContentPadding, | ||
| content: @Composable () -> Unit, | ||
| ) { | ||
| val isEnabled by remember(progress) { derivedStateOf { enabled() && !showIndeterminateProgress() && progress == null } } | ||
| val buttonColors = style.buttonColors() | ||
|
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| Button( | ||
| modifier = modifier, | ||
| colors = buttonColors, | ||
| shape = CustomShapes.MEDIUM, | ||
| enabled = isEnabled, | ||
| contentPadding = contentPadding, | ||
| onClick = onClick, | ||
| ) { | ||
| when { | ||
| progress != null -> { | ||
| val (progressColor, progressModifier) = getProgressSpecs(buttonColors) | ||
| KeepButtonSize(content) { | ||
| CircularProgressIndicator(modifier = progressModifier, color = progressColor, progress = progress) | ||
| } | ||
| } | ||
| showIndeterminateProgress() -> { | ||
| val (progressColor, progressModifier) = getProgressSpecs(buttonColors) | ||
| KeepButtonSize(content) { | ||
| CircularProgressIndicator(modifier = progressModifier, color = progressColor) | ||
| } | ||
| } | ||
| else -> content() | ||
| } | ||
| } | ||
| } | ||
|
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| @Composable | ||
| private fun KeepButtonSize(targetSizeContent: @Composable () -> Unit, content: @Composable () -> Unit) { | ||
| Box(contentAlignment = Alignment.Center) { | ||
| Row(modifier = Modifier.alpha(0f)) { | ||
| targetSizeContent() | ||
| } | ||
| content() | ||
| } | ||
| } | ||
|
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| @Composable | ||
| private fun getProgressSpecs(buttonColors: ButtonColors): Pair<Color, Modifier> { | ||
| val progressColor = buttonColors.disabledContentColor | ||
| val progressModifier = Modifier | ||
| .fillMaxHeight(0.8f) | ||
| .aspectRatio(1f) | ||
| return Pair(progressColor, progressModifier) | ||
| } | ||
|
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| enum class ButtonType(val buttonColors: @Composable () -> ButtonColors) { | ||
| PRIMARY({ | ||
| ButtonDefaults.buttonColors( | ||
| containerColor = SwissTransferTheme.materialColors.primary, | ||
| contentColor = SwissTransferTheme.materialColors.onPrimary, | ||
| ) | ||
| }), | ||
| SECONDARY({ | ||
| ButtonDefaults.buttonColors( | ||
| containerColor = SwissTransferTheme.colors.tertiaryButtonBackground, | ||
| contentColor = SwissTransferTheme.materialColors.primary, | ||
| ) | ||
| }), | ||
| TERTIARY({ | ||
| ButtonDefaults.buttonColors( | ||
| containerColor = Color.Transparent, | ||
| contentColor = SwissTransferTheme.materialColors.primary, | ||
| ) | ||
| }), | ||
| ERROR({ | ||
| ButtonDefaults.buttonColors( | ||
| containerColor = SwissTransferTheme.materialColors.error, | ||
| contentColor = SwissTransferTheme.materialColors.onError, | ||
| ) | ||
| }), | ||
| } | ||
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| @PreviewLightAndDark | ||
| @Composable | ||
| private fun Preview() { | ||
| SwissTransferTheme { | ||
| Surface { | ||
| Column(verticalArrangement = Arrangement.spacedBy(8.dp)) { | ||
| ButtonType.entries.forEach { buttonType -> | ||
| Row { | ||
| SwissTransferButton( | ||
| modifier = Modifier.height(40.dp), | ||
| style = buttonType, | ||
| onClick = {}, | ||
| content = { Text("Click me!") }, | ||
| ) | ||
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| Spacer(modifier = Modifier.width(12.dp)) | ||
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| SwissTransferButton( | ||
| modifier = Modifier.height(40.dp), | ||
| style = buttonType, | ||
| onClick = {}, | ||
| progress = { 0.8f }, | ||
| content = { Text("Click me!") }, | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |