/*
* Copyright 2021 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.glance
import androidx.annotation.RestrictTo
import androidx.compose.runtime.Composable
import androidx.glance.action.Action
import androidx.glance.action.clickable
import androidx.glance.text.EmittableText
import androidx.glance.text.TextStyle
/**
* Adds a button view to the glance view.
*
* @param text The text that this button will show.
* @param onClick The action to be performed when this button is clicked.
* @param modifier The modifier to be applied to this button.
* @param enabled If false, the button will not be clickable.
* @param style The style to be applied to the text in this button.
* @param maxLines An optional maximum number of lines for the text to span, wrapping if
* necessary. If the text exceeds the given number of lines, it will be truncated.
*/
@Composable
fun Button(
text: String,
onClick: Action,
modifier: GlanceModifier = GlanceModifier,
enabled: Boolean = true,
style: TextStyle? = null,
maxLines: Int = Int.MAX_VALUE,
) {
val finalModifier = if (enabled) modifier.clickable(onClick) else modifier
GlanceNode(
factory = ::EmittableButton,
update = {
this.set(text) { this.text = it }
this.set(finalModifier) { this.modifier = it }
this.set(style) { this.style = it }
this.set(enabled) { this.enabled = it }
this.set(maxLines) { this.maxLines = it }
}
)
}
/** @suppress */
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
class EmittableButton : Emittable {
override var modifier: GlanceModifier = GlanceModifier
var text: String = ""
var style: TextStyle? = null
var enabled: Boolean = true
var maxLines: Int = Int.MAX_VALUE
override fun toString(): String = "EmittableButton('$text', enabled=$enabled, style=$style, " +
"modifier=$modifier, maxLines=$maxLines)"
}
/** @suppress */
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
fun EmittableButton.toEmittableText() = EmittableText().also {
it.modifier = modifier
it.text = text
it.style = style
it.maxLines = maxLines
}