Add OverflowMenu implementation

Author: ceribe

overflow-menu/src/main/java/com/ceribe/compose/overflowmenu/OverflowMenu.kt

@@ -0,0 +1,76 @@
+package com.ceribe.compose.overflowmenu
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Row
+import androidx.compose.material.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Warning
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import kotlin.math.min
+
+@Composable
+fun OverflowMenu(params: OverflowMenuParamsDTO) {
+    with(params) {
+        val shownIcons = icons.subList(0, min(shownIconsCount, icons.size))
+        val hiddenIcons =
+            if(shownIconsCount >= icons.size)
+                listOf()
+            else
+                icons.subList(shownIconsCount, icons.size)
+        Row {
+            shownIcons.forEach {
+                IconButton(
+                    onClick = it.onClick ?: defaults.onClick ?: {},
+                    modifier = it.modifier ?: defaults.modifier ?: Modifier,
+                    enabled = it.enabled ?: defaults.enabled ?: true
+                ) {
+                    Icon(
+                        imageVector = it.imageVector ?: defaults.imageVector ?: Icons.Filled.Warning,
+                        contentDescription = it.contentDescription ?: defaults.contentDescription,
+                        tint = it.tint ?: defaults.tint ?: LocalContentColor.current.copy(alpha = LocalContentAlpha.current)
+                    )
+                }
+            }
+            if(hiddenIcons.isNotEmpty()) {
+                Box {
+                    var showDropDown by remember { mutableStateOf(false) }
+                    IconButton(
+                        onClick = {
+                            showDropDown = true
+                            (overflowIcon.onClick ?: defaults.onClick ?: {})()
+                        },
+                        modifier = overflowIcon.modifier ?: defaults.modifier ?: Modifier,
+                        enabled = overflowIcon.enabled ?: defaults.enabled ?: true
+                    ) {
+                        Icon(
+                            imageVector = overflowIcon.imageVector ?: defaults.imageVector
+                            ?: Icons.Filled.Warning,
+                            contentDescription = overflowIcon.contentDescription
+                                ?: defaults.contentDescription,
+                            tint = overflowIcon.tint ?: defaults.tint
+                            ?: LocalContentColor.current.copy(alpha = LocalContentAlpha.current)
+                        )
+                    }
+                    DropdownMenu(
+                        expanded = showDropDown,
+                        onDismissRequest = { showDropDown = false }
+                    ) {
+                        hiddenIcons.forEach {
+                            DropdownMenuItem(
+                                modifier = it.modifier ?: defaults.modifier ?: Modifier,
+                                enabled = it.enabled ?: defaults.enabled ?: true,
+                                onClick = {
+                                    showDropDown = false
+                                    (it.onClick ?: defaults.onClick ?: {})()
+                                }
+                            ) {
+                                Text(it.label ?: defaults.label ?: "")
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

overflow-menu/src/main/java/com/ceribe/compose/overflowmenu/OverflowMenuParamsDSL.kt

@@ -0,0 +1,59 @@
+package com.ceribe.compose.overflowmenu
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.MoreVert
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+
+@DslMarker
+annotation class OverflowMenuDSL
+
+@Composable
+fun OverflowMenu(block: OverflowMenuParamsBuilder.() -> Unit) {
+    OverflowMenu(OverflowMenuParamsBuilder().apply(block).build())
+}
+
+@OverflowMenuDSL
+class OverflowMenuParamsBuilder {
+
+    var shownIconsCount = 1
+    private val icons = mutableListOf<IconParamsDTO>()
+    private var overflowIcon: IconParamsDTO = IconParamsDTO(imageVector = Icons.Filled.MoreVert)
+    private var defaults: IconParamsDTO = IconParamsDTO()
+
+
+    fun overflowIcon(block: IconParamsBuilder.() -> Unit) {
+        overflowIcon = IconParamsBuilder(Icons.Filled.MoreVert).apply(block).build()
+    }
+
+    fun defaults(block: IconParamsBuilder.() -> Unit) {
+        defaults = IconParamsBuilder().apply(block).build()
+    }
+
+    fun icons(block: IconsParamsBuilder.() -> Unit) {
+        icons.addAll(IconsParamsBuilder().apply(block))
+    }
+
+    fun build() = OverflowMenuParamsDTO(shownIconsCount, icons, overflowIcon, defaults)
+}
+
+@OverflowMenuDSL
+class IconParamsBuilder(icon: ImageVector? = null) {
+    var onClick: (() -> Unit)? = null
+    var modifier: Modifier? = null
+    var enabled: Boolean? = null
+    var imageVector: ImageVector? = icon
+    var label: String? = null
+    var contentDescription: String? = null
+    var tint: Color? = null
+    fun build() = IconParamsDTO(onClick, modifier, enabled, imageVector, label, contentDescription, tint)
+}
+
+@OverflowMenuDSL
+class IconsParamsBuilder: ArrayList<IconParamsDTO>() {
+    fun icon(block: IconParamsBuilder.() -> Unit) {
+        add(IconParamsBuilder().apply(block).build())
+    }
+}

overflow-menu/src/main/java/com/ceribe/compose/overflowmenu/OverflowMenuParamsDTO.kt

@@ -0,0 +1,22 @@
+package com.ceribe.compose.overflowmenu
+
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
+
+class OverflowMenuParamsDTO(
+    val shownIconsCount: Int,
+    val icons: List<IconParamsDTO>,
+    val overflowIcon: IconParamsDTO,
+    val defaults: IconParamsDTO
+)
+
+class IconParamsDTO(
+    val onClick: (() -> Unit)? = null,
+    val modifier: Modifier? = null,
+    val enabled: Boolean? = null,
+    val imageVector: ImageVector? = null,
+    val label: String? = null,
+    val contentDescription: String? = null,
+    val tint: Color? = null
+)