Создан модуль corbind-material. Добавлены ивенты AppBarLayoutOffsetCh…

…anges

corbind-material/.gitignore

@@ -0,0 +1 @@
+/build

corbind-material/build.gradle

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+apply plugin: 'com.android.library'
+apply plugin: 'org.jetbrains.kotlin.android'
+
+kotlin {
+    experimental {
+        coroutines "enable"
+    }
+}
+
+android {
+
+    compileSdkVersion buildConfig.compileSdk
+    defaultConfig {
+        minSdkVersion buildConfig.minSdk
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+}
+
+dependencies {
+    api project(':corbind')
+
+    api deps.googleMaterial
+}

corbind-material/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

corbind-material/src/main/AndroidManifest.xml

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+<manifest package="ru.ldralighieri.corbind.material" />

corbind-material/src/main/kotlin/ru/ldralighieri/corbind/material/AppBarLayoutOffsetChanges.kt

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+package ru.ldralighieri.corbind.material
+
+import com.google.android.material.appbar.AppBarLayout
+import kotlinx.coroutines.experimental.CoroutineScope
+import kotlinx.coroutines.experimental.Dispatchers
+import kotlinx.coroutines.experimental.channels.Channel
+import kotlinx.coroutines.experimental.channels.ReceiveChannel
+import kotlinx.coroutines.experimental.channels.actor
+import kotlinx.coroutines.experimental.channels.produce
+import kotlinx.coroutines.experimental.coroutineScope
+
+// -----------------------------------------------------------------------------------------------
+
+
+fun AppBarLayout.offsetChanges(
+        scope: CoroutineScope,
+        action: suspend (Int) -> Unit
+) {
+    val events = scope.actor<Int>(Dispatchers.Main, Channel.CONFLATED) {
+        for (offset in channel) action(offset)
+    }
+
+    val listener = listener(events::offer)
+    addOnOffsetChangedListener(listener)
+    events.invokeOnClose { removeOnOffsetChangedListener(listener) }
+}
+
+suspend fun AppBarLayout.offsetChanges(
+        action: suspend (Int) -> Unit
+) = coroutineScope {
+    val events = actor<Int>(Dispatchers.Main, Channel.CONFLATED) {
+        for (offset in channel) action(offset)
+    }
+
+    val listener = listener(events::offer)
+    addOnOffsetChangedListener(listener)
+    events.invokeOnClose { removeOnOffsetChangedListener(listener) }
+}
+
+
+// -----------------------------------------------------------------------------------------------
+
+
+fun AppBarLayout.offsetChanges(
+        scope: CoroutineScope
+): ReceiveChannel<Int> = scope.produce(Dispatchers.Main, Channel.CONFLATED) {
+
+    val listener = listener(::offer)
+    addOnOffsetChangedListener(listener)
+    invokeOnClose { removeOnOffsetChangedListener(listener) }
+}
+
+suspend fun AppBarLayout.offsetChanges(): ReceiveChannel<Int> = coroutineScope {
+
+    produce<Int>(Dispatchers.Main, Channel.CONFLATED) {
+        val listener = listener(::offer)
+        addOnOffsetChangedListener(listener)
+        invokeOnClose { removeOnOffsetChangedListener(listener) }
+    }
+}
+
+
+// -----------------------------------------------------------------------------------------------
+
+
+private fun listener(
+        emitter: (Int) -> Boolean
+) = AppBarLayout.OnOffsetChangedListener { _, verticalOffset -> emitter(verticalOffset) }

settings.gradle

@@ -1,9 +1,10 @@
 rootProject.name = 'Corbind'
 
 include ':corbind'
-include ':corbind-core'
 include ':corbind-appcompat'
-include ':corbind-viewpager'
-include ':corbind-swiperefreshlayout'
+include ':corbind-core'
 include ':corbind-drawerlayout'
 include ':corbind-leanback'
+include ':corbind-material'
+include ':corbind-swiperefreshlayout'
+include ':corbind-viewpager'