.circleci/config.yml

@@ -0,0 +1,86 @@
+version: 2.1
+jobs:
+  build:
+    working_directory: ~/code
+    docker:
+      - image: circleci/android:api-29
+    environment:
+      JVM_OPTS: -Xmx3200m
+    steps:
+      - checkout
+      - restore_cache:
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
+      - run:
+          name: Download Dependencies
+          command: ./gradlew androidDependencies
+      - save_cache:
+          paths:
+            - ~/.gradle
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
+
+  tests:
+    working_directory: ~/code
+    docker:
+      - image: circleci/android:api-29
+    environment:
+      JVM_OPTS: -Xmx3200m
+    steps:
+      - checkout
+      - restore_cache:
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
+      - store_artifacts:
+          path: app/build/reports
+          destination: reports
+      - run:
+          name: Run Lint Test
+          command: ./gradlew lint
+      - run:
+          name: Run Tests
+          command: ./gradlew lint test
+      - store_artifacts:
+          path: app/build/reports
+          destination: reports
+      - store_test_results:
+          path: app/build/test-results
+
+  deploy:
+    working_directory: ~/code
+    docker:
+      - image: circleci/android:api-29
+    environment:
+      JVM_OPTS: -Xmx3200m
+    steps:
+      - checkout
+      - restore_cache:
+          key: jars-{{ checksum "build.gradle" }}-{{ checksum  "app/build.gradle" }}
+      - run:
+          name: Build Library
+          command: ./gradlew :expandable-recyclerview:assembleRelease
+      - run:
+          name: Export key
+          command: |
+            mkdir expandable-recyclerview/maven
+            echo ${GPG_KEY_CONTENTS} | base64 -d --ignore-garbage > expandable-recyclerview/maven/secret.gpg
+      - run:
+          name: Staging
+          command: ./gradlew :expandable-recyclerview:publishReleasePublicationToSonatypeRepository
+      - run:
+          name: Release Library
+          command: ./gradlew closeAndReleaseRepository
+
+workflows:
+  version: 2.1
+  build-and-deploy:
+    jobs:
+      - build:
+          filters:  # required since `deploy` has tag filters AND requires `build`
+            tags:
+              only: /.*/
+      - deploy:
+          requires:
+            - build
+          filters:
+            tags:
+              only: /v[0-9]{1,3}\.[0-9]{1,3}\.?[0-9]{0,3}.*/
+            branches:
+              ignore: /.*/

.github/workflows/publish.yml

@@ -1,38 +0,0 @@
-name: Publish
-
-on:
-  release:
-    # We'll run this workflow when a new GitHub release is created
-    types: [released]
-
-jobs:
-  publish:
-    name: Release build and publish
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v2
-      - name: Set up JDK 11
-        uses: actions/setup-java@v2
-        with:
-          distribution: adopt
-          java-version: 11
-
-        # Builds the release artifacts of the library
-      - name: Release build
-        run: ./gradlew :expandable-recyclerview:assembleRelease
-
-        # Generates other artifacts (javadocJar is optional)
-      - name: Source jar and dokka
-        run: ./gradlew androidSourcesJar javadocJar
-
-        # Runs upload, and then closes & releases the repository
-      - name: Publish to MavenCentral
-        run: ./gradlew publishReleasePublicationToSonatypeRepository --max-workers 1 closeAndReleaseSonatypeStagingRepository
-        env:
-          OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-          OSSRH_PASSWORD: ${{ secrets.OSSRH_PASSWORD }}
-          SIGNING_KEY_ID: ${{ secrets.SIGNING_KEY_ID }}
-          SIGNING_PASSWORD: ${{ secrets.SIGNING_PASSWORD }}
-          SIGNING_KEY: ${{ secrets.SIGNING_KEY }}
-          SONATYPE_STAGING_PROFILE_ID: ${{ secrets.SONATYPE_STAGING_PROFILE_ID }}

.github/workflows/test.yml

@@ -1,27 +0,0 @@
-name: Test
-
-on:
-  pull_request:
-    branches:
-      - master
-      - develop
-
-jobs:
-  build:
-    name: Run unit tests
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v2
-      - name: Set up JDK 11
-        uses: actions/setup-java@v2
-        with:
-          distribution: adopt
-          java-version: 11
-      # Builds the release artifacts
-      - name: Build project
-        run: ./gradlew assemble
-
-      # Run tests
-      - name: Run tests
-        run: ./gradlew test

.idea/codeStyles/Project.xml

@@ -1,5 +1,8 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
+    <AndroidXmlCodeStyleSettings>
+      <option name="ARRANGEMENT_SETTINGS_MIGRATED_TO_191" value="true" />
+    </AndroidXmlCodeStyleSettings>
     <JetCodeStyleSettings>
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
     </JetCodeStyleSettings>

.idea/compiler.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="11" />
-  </component>
-</project>

.idea/gradle.xml

@@ -1,13 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
-        <option name="testRunner" value="GRADLE" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="11" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
@@ -15,6 +12,8 @@
             <option value="$PROJECT_DIR$/expandable-recyclerview" />
           </set>
         </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+        <option name="testRunner" value="PLATFORM" />
       </GradleProjectSettings>
     </option>
   </component>

.idea/jarRepositories.xml

@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RemoteRepositoriesConfiguration">
-    <remote-repository>
-      <option name="id" value="central" />
-      <option name="name" value="Maven Central repository" />
-      <option name="url" value="https://repo1.maven.org/maven2" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="jboss.community" />
-      <option name="name" value="JBoss Community repository" />
-      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="BintrayJCenter" />
-      <option name="name" value="BintrayJCenter" />
-      <option name="url" value="https://jcenter.bintray.com/" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="Google" />
-      <option name="name" value="Google" />
-      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="MavenRepo" />
-      <option name="name" value="MavenRepo" />
-      <option name="url" value="https://repo.maven.apache.org/maven2/" />
-    </remote-repository>
-  </component>
-</project>

.idea/misc.xml

@@ -1,15 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="DesignSurface">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
-    <option name="filePathToZoomLevelMap">
-      <map>
-        <entry key="app/src/main/res/layout/activity_main.xml" value="0.18020833333333333" />
-        <entry key="app/src/main/res/layout/item_level_1.xml" value="0.32916666666666666" />
-        <entry key="app/src/main/res/layout/item_level_2.xml" value="0.32916666666666666" />
-        <entry key="app/src/main/res/layout/item_level_3.xml" value="0.2824074074074074" />
-      </map>
-    </option>
-  </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

.idea/runConfigurations.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
+        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>

LICENSE

@@ -1,21 +1,201 @@
-MIT License
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
 
-Copyright (c) 2022 Adrian Kuta
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
+   1. Definitions.
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
+      "License" shall mean the terms and conditions for use, reproduction,
-copies or substantial portions of the Software.
+      and distribution as defined by Sections 1 through 9 of this document.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+      "Licensor" shall mean the copyright owner or entity authorized by
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+      the copyright owner that is granting the License.
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+      "Legal Entity" shall mean the union of the acting entity and all
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+      other entities that control, are controlled by, or are under common
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+      control with that entity. For the purposes of this definition,
-SOFTWARE.
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+
+      "Source" form shall mean the preferred form for making modifications,
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+
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+      "Work" shall mean the work of authorship, whether in Source or
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+      "Contribution" shall mean any work of authorship, including
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+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
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+
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+
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+   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.

README.md

@@ -1,106 +1,11 @@
 # Multilevel Expandable RecyclerView
 
-[![maven](https://img.shields.io/maven-central/v/com.github.adriankuta/expandable-recyclerView?style=plastic)](https://mvnrepository.com/artifact/com.github.adriankuta/expandable-recyclerView)
+[![maven](https://img.shields.io/maven-central/v/com.github.adriankuta/expandable-recyclerView?style=plastic)](https://search.maven.org/artifact/com.github.adriankuta/expandable-recyclerView)
 [![License](https://img.shields.io/github/license/AdrianKuta/Expandable-RecyclerView?style=plastic)](https://github.com/AdrianKuta/Expandable-RecyclerView/blob/master/LICENSE)
-[![Publish](https://github.com/AdrianKuta/Expandable-RecyclerView/actions/workflows/publish.yml/badge.svg)](https://github.com/AdrianKuta/Expandable-RecyclerView/actions/workflows/publish.yml)
+[![CircleCI](https://img.shields.io/circleci/build/github/AdrianKuta/Expandable-RecyclerView/master?label=CircleCI&style=plastic&logo=circleci)](https://circleci.com/gh/AdrianKuta/Expandable-RecyclerView)
 
-With this adapter you can add expand feature to regular RecyclerView.
+Library is currently during implementation! It is **not** ready to use yet :/
 
-All objects are store in [Tree (Data structure)](https://github.com/AdrianKuta/Tree-Data-Structure), so adapter can create multilevel expandable groups.
+Final version will be released soon.
 
-Under the hood, the tree is flattened to simple list, so from RecyclerView's point of view it can operate as usual.
+![Release date](https://img.shields.io/date/1580493319?label=Expected%20release&style=for-the-badge)
-
-
-<img src="https://github.com/AdrianKuta/Expandable-RecyclerView/blob/master/Demo.gif" width="400" />
-
-## Download
-
-    implementation "com.github.adriankuta:expandable-recyclerView:$latest_versions"
-    
-## Usage
-To use expandable adapter we just have to expand our Adapter class with `ExpandableRecyclerViewAdapter<T, VH>`,
-where `T` is data type on which adapter will operate, `VH` is ViewHolder type.
-
-```kotlin
-class ExpandableAdapter: ExpandableRecyclerViewAdapter<String, RecyclerView.ViewHolder>() {
-    
-    
-    override fun getTreeNodes(): ExpandableTreeNode<String> {
-        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
-    }
-
-    override fun onBindViewHolder(
-        holder: RecyclerView.ViewHolder,
-        treeNode: ExpandableTreeNode<String>,
-        nestLevel: Int
-    ) {
-        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
-    }
-
-    override fun onCreateViewHolder(parent: ViewGroup, nestLevel: Int): RecyclerView.ViewHolder {
-        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
-    }
-}
-```    
-
-`ExpandableRecyclerViewAdapter` has build-in methods to control expandable groups:
-```kotlin
-fun toggleGroup(expandableTreeNode: ExpandableTreeNode<T>)
-
-fun expand(expandableTreeNode: ExpandableTreeNode<T>)
-
-fun collapse(expandableTreeNode: ExpandableTreeNode<T>)
-```
-
-Information if group is expanded or not is stored inside `ExpandableTreeNode` class
-
-
-### Creating tree
-
-There are different ways to create tree. The easiest way is to use extensions methods prepared specially for kotlin:
-
-```kotlin
-val tree = 
-    expandableTree("World") {
-        child("North America") {
-            child("USA")
-        }
-        child("Europe") {
-            child("Poland") {
-                child("Warsaw")
-            }
-            child("Germany")
-        }
-        child("Asia") {
-            child("China")
-        }
-    }
-```
-
-But in case when you want create tree at runtime, you can use `ExpandableTreeNode<T>` class to build tree:
-
-```kotlin
-val root = ExpandableTreeNode("World")
-val northA = ExpandableTreeNode("North America")
-val europe = ExpandableTreeNode("Europe")
-val asia = ExpandableTreeNode("Asia")
-
-root.addChild(northA)
-root.addChild(europe)
-root.addChild(asia)
-
-val poland = ExpandableTreeNode("Poland")
-europe.addChild(poland)
-// etc.
-```
-
-## Sample
-
-Full example of this library is available in app module.
-
-## Contribution
-
-Project is still during development and improvements.
-Issues with BUGs or suggestions are welcome.
-
-Also please feel free to fork library and contribute to project! ;-)

app/build.gradle

@@ -1,15 +1,16 @@
 apply plugin: 'com.android.application'
+
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-kapt'
+
+apply plugin: 'kotlin-android-extensions'
 
 android {
-    namespace 'com.github.adriankuta'
+    compileSdkVersion 29
-    compileSdkVersion 33
+    buildToolsVersion "29.0.2"
-    buildToolsVersion "33.0.0"
     defaultConfig {
         applicationId "com.github.adriankuta"
         minSdkVersion 23
-        targetSdkVersion 33
+        targetSdkVersion 29
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -20,20 +21,15 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
-    buildFeatures {
-        viewBinding true
-    }
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.core:core-ktx:1.10.1'
+    implementation 'androidx.core:core-ktx:1.1.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation 'com.github.adriankuta:expandable-recyclerView:2.1.0'
+    testImplementation 'junit:junit:4.12'
-
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
 }

app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.github.adriankuta">
 
     <application
         android:allowBackup="true"
@@ -8,8 +9,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity"
+        <activity android:name=".MainActivity">
-            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/github/adriankuta/ExpandableAdapter.kt

@@ -1,125 +0,0 @@
-package com.github.adriankuta
-
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.core.view.isGone
-import androidx.recyclerview.widget.RecyclerView
-import com.github.adriankuta.databinding.ItemLevel1Binding
-import com.github.adriankuta.databinding.ItemLevel2Binding
-import com.github.adriankuta.databinding.ItemLevel3Binding
-import com.github.adriankuta.expandable_recyclerview.ExpandableRecyclerViewAdapter
-import com.github.adriankuta.expandable_recyclerview.ExpandableTreeNode
-import com.github.adriankuta.expandable_recyclerview.expandableTree
-
-class ExpandableAdapter :
-    ExpandableRecyclerViewAdapter<Region, ExpandableAdapter.ExpandableViewHolder>() {
-
-    private var tree: ExpandableTreeNode<Region>? = null
-
-    fun setTree(tree: ExpandableTreeNode<Region>) {
-        this.tree = tree
-        notifyDataSetChanged()
-    }
-
-    override fun getTreeNodes(): ExpandableTreeNode<Region> = tree ?: expandableTree(Region(""))
-
-    override fun onCreateViewHolder(parent: ViewGroup, nestLevel: Int): ExpandableViewHolder {
-        return when (nestLevel) {
-            1 -> ExpandableViewHolder.Level1(parent.inflateLevel1())
-            2 -> ExpandableViewHolder.Level2(parent.inflateLevel2())
-            3 -> ExpandableViewHolder.Level3(parent.inflateLevel3())
-            else -> throw IllegalArgumentException("Not implemented ViewHolder for nest level: $nestLevel")
-        }
-    }
-
-    override fun onBindViewHolder(
-        holder: ExpandableViewHolder,
-        treeNode: ExpandableTreeNode<Region>,
-        nestLevel: Int
-    ) {
-        holder.bind(treeNode) {
-            toggleGroup(it)
-        }
-    }
-
-    sealed class ExpandableViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
-
-        class Level1(private val binding: ItemLevel1Binding) : ExpandableViewHolder(binding.root) {
-            override fun bind(
-                node: ExpandableTreeNode<Region>,
-                onClickListener: ((ExpandableTreeNode<Region>) -> Unit)?
-            ) {
-                binding.apply {
-                    root.setOnClickListener { onClickListener?.invoke(node) }
-                    textView.text = node.value.name
-                    expandIcon.isGone = node.children.isEmpty()
-                    expandIcon.setImageResource(
-                        if (node.expanded)
-                            R.drawable.ic_expand_less_black_24dp
-                        else
-                            R.drawable.ic_expand_more_black_24dp
-                    )
-                }
-            }
-        }
-
-        class Level2(private val binding: ItemLevel2Binding) : ExpandableViewHolder(binding.root) {
-            override fun bind(
-                node: ExpandableTreeNode<Region>,
-                onClickListener: ((ExpandableTreeNode<Region>) -> Unit)?
-            ) {
-                binding.apply {
-                    root.setOnClickListener { onClickListener?.invoke(node) }
-                    textView.text = node.value.name
-                    expandIcon.isGone = node.children.isEmpty()
-                    expandIcon.setImageResource(
-                        if (node.expanded)
-                            R.drawable.ic_expand_less_black_24dp
-                        else
-                            R.drawable.ic_expand_more_black_24dp
-                    )
-                }
-            }
-        }
-
-        class Level3(private val binding: ItemLevel3Binding) : ExpandableViewHolder(binding.root) {
-            override fun bind(
-                node: ExpandableTreeNode<Region>,
-                onClickListener: ((ExpandableTreeNode<Region>) -> Unit)?
-            ) {
-                binding.apply {
-                    root.setOnClickListener { onClickListener?.invoke(node) }
-                    textView.text = node.value.name
-                    expandIcon.isGone = node.children.isEmpty()
-                    expandIcon.setImageResource(
-                        if (node.expanded)
-                            R.drawable.ic_expand_less_black_24dp
-                        else
-                            R.drawable.ic_expand_more_black_24dp
-                    )
-                }
-            }
-        }
-
-
-        abstract fun bind(
-            node: ExpandableTreeNode<Region>,
-            onClickListener: ((ExpandableTreeNode<Region>) -> Unit)? = null
-        )
-
-    }
-
-    private fun ViewGroup.inflateLevel1(): ItemLevel1Binding {
-        return ItemLevel1Binding.inflate(LayoutInflater.from(context), this, false)
-    }
-
-    private fun ViewGroup.inflateLevel2(): ItemLevel2Binding {
-        return ItemLevel2Binding.inflate(LayoutInflater.from(context), this, false)
-    }
-
-    private fun ViewGroup.inflateLevel3(): ItemLevel3Binding {
-        return ItemLevel3Binding.inflate(LayoutInflater.from(context), this, false)
-    }
-
-}

app/src/main/java/com/github/adriankuta/MainActivity.kt

@@ -1,37 +1,12 @@
 package com.github.adriankuta
 
-import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
-import com.github.adriankuta.databinding.ActivityMainBinding
+import android.os.Bundle
-import com.github.adriankuta.expandable_recyclerview.expandableTree
 
 class MainActivity : AppCompatActivity() {
 
-    private lateinit var binding: ActivityMainBinding
-
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(R.layout.activity_main)
-        setContentView(binding.root)
-
-        val tree = expandableTree(Region("World")) {
-            child(Region("North America")) {
-                child(Region("USA"))
-            }
-            child(Region("Europe")) {
-                child(Region("Poland")) {
-                    child(Region("Warsaw"))
-                }
-                child(Region("Germany"))
-            }
-            child(Region("Asia")) {
-                child(Region("China"))
-            }
-        }
-
-        val adapter = ExpandableAdapter()
-        binding.recyclerView.adapter = adapter
-        adapter.setTree(tree)
     }
 }

app/src/main/java/com/github/adriankuta/Region.kt

@@ -1,3 +0,0 @@
-package com.github.adriankuta
-
-data class Region(val name: String)

app/src/main/res/drawable/ic_expand_less_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M12,8l-6,6 1.41,1.41L12,10.83l4.59,4.58L18,14z"/>
-</vector>

app/src/main/res/drawable/ic_expand_more_black_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M16.59,8.59L12,13.17 7.41,8.59 6,10l6,6 6,-6z"/>
-</vector>

app/src/main/res/drawable/ic_last_element.xml

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-
-    <path
-        android:pathData="M12,0 l0,13z"
-        android:strokeWidth="2"
-        android:strokeColor="@android:color/black" />
-
-    <path
-        android:pathData="M12.5,12 l12,0"
-        android:strokeWidth="2"
-        android:strokeColor="@android:color/black" />
-
-</vector>

app/src/main/res/drawable/ic_middle_element.xml

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-
-    <path
-        android:pathData="M12,0 l0,24z"
-        android:strokeWidth="2"
-        android:strokeColor="@android:color/black" />
-
-    <path
-        android:pathData="M13,12 l11,0"
-        android:strokeWidth="2"
-        android:strokeColor="@android:color/black" />
-
-</vector>

app/src/main/res/drawable/ic_vertical_line.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-
-    <path
-        android:pathData="M12,0 l0,24"
-        android:strokeWidth="2"
-        android:strokeColor="@android:color/black" />
-
-</vector>

app/src/main/res/layout/activity_main.xml

@@ -6,15 +6,13 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
-    <androidx.recyclerview.widget.RecyclerView
+    <TextView
-        android:id="@+id/recyclerView"
+        android:layout_width="wrap_content"
-        android:layout_width="0dp"
+        android:layout_height="wrap_content"
-        android:layout_height="0dp"
+        android:text="Hello World!"
-        android:orientation="vertical"
-        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/item_level_1.xml

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-    <ImageView
-        android:id="@+id/expand_icon"
-        android:layout_width="24dp"
-        android:layout_height="0dp"
-        android:scaleType="centerInside"
-        android:visibility="gone"
-        app:layout_constraintBottom_toBottomOf="@id/textView"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="@id/textView"
-        tools:src="@drawable/ic_expand_less_black_24dp"
-        tools:visibility="visible" />
-
-    <TextView
-        android:id="@+id/textView"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:padding="8dp"
-        android:text="@{node.value}"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toEndOf="@id/expand_icon"
-        app:layout_constraintTop_toTopOf="parent"
-        tools:text="@tools:sample/full_names" />
-</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/item_level_2.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-    <ImageView
-        android:id="@+id/expand_icon"
-        android:layout_width="24dp"
-        android:layout_height="0dp"
-        android:layout_marginStart="24dp"
-        android:scaleType="centerInside"
-        android:visibility="gone"
-        app:layout_constraintBottom_toBottomOf="@id/textView"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="@id/textView"
-        tools:src="@drawable/ic_expand_less_black_24dp"
-        tools:visibility="visible" />
-
-    <TextView
-        android:id="@+id/textView"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:padding="8dp"
-        android:text="@{node.value}"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toEndOf="@id/expand_icon"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_goneMarginStart="48dp"
-        tools:text="@tools:sample/full_names" />
-</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/item_level_3.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-    <ImageView
-        android:id="@+id/expand_icon"
-        android:layout_width="24dp"
-        android:layout_height="0dp"
-        android:layout_marginStart="48dp"
-        android:scaleType="centerInside"
-        android:visibility="gone"
-        app:layout_constraintBottom_toBottomOf="@id/textView"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="@id/textView"
-        tools:src="@drawable/ic_expand_less_black_24dp"
-        tools:visibility="visible"/>
-
-    <TextView
-        android:id="@+id/textView"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:padding="8dp"
-        android:text="@{node.value}"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toEndOf="@id/expand_icon"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_goneMarginStart="96dp"
-        tools:text="@tools:sample/full_names" />
-</androidx.constraintlayout.widget.ConstraintLayout>

build.gradle

@@ -1,29 +1,26 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.8.22'
+    ext.kotlin_version = '1.3.61'
     repositories {
         google()
-        mavenCentral()
+        jcenter()
 
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.3.1'
+        classpath 'com.android.tools.build:gradle:3.5.3'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "io.codearte.gradle.nexus:gradle-nexus-staging-plugin:0.21.2"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
 }
 
-plugins {
-    id("io.github.gradle-nexus.publish-plugin") version "1.1.0"
-    id("org.jetbrains.dokka") version "1.5.0"
-}
-
 allprojects {
     repositories {
         google()
-        mavenCentral()
+        jcenter()
+
     }
 }
 
@@ -31,4 +28,4 @@ task clean(type: Delete) {
     delete rootProject.buildDir
 }
 
-apply from: "${rootDir}/scripts/publish-root.gradle"
+apply plugin: 'io.codearte.nexus-staging'

expandable-recyclerview/build.gradle

@@ -1,20 +1,21 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 
 afterEvaluate {
     generateReleaseBuildConfig.enabled = false
 }
 
 android {
-    namespace 'com.github.adriankuta.expandable_recyclerview'
+    compileSdkVersion 29
-    compileSdkVersion 33
+    buildToolsVersion "29.0.2"
-    buildToolsVersion "33.0.0"
 
 
     defaultConfig {
         minSdkVersion 23
-        targetSdkVersion 33
+        targetSdkVersion 29
-        versionName "2.1.2"
+        versionCode 1
+        versionName "0.0.1-alpha02"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles 'consumer-rules.pro'
@@ -31,14 +32,14 @@ android {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.core:core-ktx:1.10.1'
+    implementation 'androidx.core:core-ktx:1.1.0'
-    api "androidx.recyclerview:recyclerview:1.3.0"
+    implementation "androidx.recyclerview:recyclerview:1.1.0"
-    api "com.github.adriankuta:tree-structure:3.0.2"
+    implementation "com.github.adriankuta:tree-structure:1.2.0"
 
-    testImplementation 'junit:junit:4.13.2'
+    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }
 
 ext {
@@ -47,4 +48,4 @@ ext {
     PUBLISH_VERSION = android.defaultConfig.versionName
 }
 
-apply from: "${rootProject.projectDir}/scripts/publish-module.gradle"
+apply from: "${rootProject.projectDir}/scripts/publish-mavencentral.gradle"

expandable-recyclerview/src/androidTest/java/com/github/adriankuta/expandable_recyclerview/ExampleInstrumentedTest.kt

@@ -1,11 +1,13 @@
 package com.github.adriankuta.expandable_recyclerview
 
-import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
-import org.junit.Assert.*
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
 import org.junit.Test
 import org.junit.runner.RunWith
 
+import org.junit.Assert.*
+
 /**
  * Instrumented test, which will execute on an Android device.
  *

expandable-recyclerview/src/main/AndroidManifest.xml

@@ -1 +1,2 @@
-<manifest />
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.github.adriankuta.expandable_recyclerview" />

expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNode.kt

@@ -6,78 +6,33 @@ import com.github.adriankuta.datastructure.tree.TreeNode
 class ExpandableTreeNode<T>(value: T) : TreeNode<T>(value) {
 
     var expanded: Boolean = true
+        set(value) {
+            field = value
+            children.forEach {
+                (it as ExpandableTreeNode).expanded = value
+            }
+        }
 
-    override fun child(value: T, childDeclaration: ChildDeclaration<T>?): ExpandableTreeNode<T> {
+    override fun child(value: T, childDeclaration: ChildDeclaration<T>?) {
         val newChild = ExpandableTreeNode(value)
         if (childDeclaration != null)
             newChild.childDeclaration()
         addChild(newChild)
-        return newChild
     }
 
-    /**
+    fun getVisibleNodeCount(): Int {
-     * @param skipRootNode If `True`, then root node won't be counted.
+        return onlyVisibleItems()
-     */
-    internal fun getVisibleNodeCount(skipRootNode: Boolean): Int {
-        var size = onlyVisibleItems()
             .size
-
-        if (skipRootNode && size > 0)
-            size--
-
-        return size
     }
 
-    /**
+    fun getVisibleNode(position: Int): ExpandableTreeNode<T> {
-     * This function use Pre-order iteration to go through tree:
+        return onlyVisibleItems()[position]
-     * ```
-     * e.g.
-     *                    1
-     *                  / | \
-     *                 /  |   \
-     *               2    3     4
-     *              / \       / | \
-     *             5    6    7  8  9
-     *            /   / | \
-     *           10  11 12 13
-     *
-     * Output (skipRootNode = false): 1 2 5 10 6 11 12 13 3 4 7 8 9
-     * Output (skipRootNode = true): 2 5 10 6 11 12 13 3 4 7 8 9
-     * ```
-     * @param skipRootNode If `True` root element will be omitted, and position 0 will be for first left child.
-     */
-    internal fun getVisibleNode(position: Int, skipRootNode: Boolean): ExpandableTreeNode<T> {
-        val nodePosition = if (skipRootNode) position + 1 else position
-        return onlyVisibleItems()[nodePosition]
     }
 
-    /**
+    private fun onlyVisibleItems(): List<ExpandableTreeNode<T>> {
-     * @return List of nodes which parent or higher ancestor aren't collapsed.
-     */
-    fun onlyVisibleItems(): List<ExpandableTreeNode<T>> {
         //Visible if parent of node is expanded.
         return map { it as ExpandableTreeNode }
-            .filter { allAncestorsAreExpanded(it) }
+            .filter { (it.parent as? ExpandableTreeNode)?.expanded ?: true }
-    }
-
-    /**
-     * `Ancestor` is a node reachable by repeated proceeding from child to parent.
-     * @return `True` if parent, and all parent's ancestors are expanded.
-     */
-    private fun allAncestorsAreExpanded(node: ExpandableTreeNode<T>): Boolean {
-        var ancestor = node.parent as? ExpandableTreeNode
-        var ancestorsAreExpanded = isAncestorExpanded(ancestor)
-
-        while (ancestorsAreExpanded && ancestor != null) {
-            ancestor = ancestor.parent as? ExpandableTreeNode<T>
-            ancestorsAreExpanded = ancestorsAreExpanded.and(isAncestorExpanded(ancestor))
-        }
-
-        return ancestorsAreExpanded
-    }
-
-    private fun isAncestorExpanded(ancestor: ExpandableTreeNode<T>?): Boolean {
-        return ancestor?.expanded ?: true
     }
 
 }

expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNodeExt.kt

@@ -6,7 +6,7 @@ import com.github.adriankuta.datastructure.tree.ChildDeclaration
 @JvmSynthetic
 inline fun <reified T> expandableTree(
     value: T,
-    childDeclaration: ChildDeclaration<T> = {}
+    childDeclaration: ChildDeclaration<T>
 ): ExpandableTreeNode<T> {
     val treeNode = ExpandableTreeNode(value)
     treeNode.childDeclaration()

expandable-recyclerview/src/main/java/com/github/adriankuta/expandable_recyclerview/MultilevelRecyclerViewAdapter.kt

@@ -3,7 +3,7 @@ package com.github.adriankuta.expandable_recyclerview
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 
-abstract class ExpandableRecyclerViewAdapter<T, VH : RecyclerView.ViewHolder> :
+abstract class MultilevelRecyclerViewAdapter<T, VH : RecyclerView.ViewHolder> :
     RecyclerView.Adapter<VH>() {
 
     private lateinit var treeNodes: ExpandableTreeNode<T>
@@ -12,35 +12,25 @@ abstract class ExpandableRecyclerViewAdapter<T, VH : RecyclerView.ViewHolder> :
     abstract override fun onCreateViewHolder(parent: ViewGroup, nestLevel: Int): VH
 
     final override fun onBindViewHolder(holder: VH, position: Int) {
-        val visibleNode = treeNodes.getVisibleNode(position, true)
+        onBindViewHolder(holder, treeNodes.getVisibleNode(position))
-        onBindViewHolder(holder, visibleNode, visibleNode.depth())
     }
 
-    abstract fun onBindViewHolder(holder: VH, treeNode: ExpandableTreeNode<T>, nestLevel: Int)
+    abstract fun onBindViewHolder(holder: VH, treeNode: ExpandableTreeNode<T>)
 
     abstract fun getTreeNodes(): ExpandableTreeNode<T>
 
     final override fun getItemCount(): Int {
         treeNodes = getTreeNodes()
-        return treeNodes.getVisibleNodeCount(true) //We don't want to show root element.
+        return treeNodes.getVisibleNodeCount()
     }
 
     final override fun getItemViewType(position: Int): Int {
-        return treeNodes.getVisibleNode(position, true).depth()
+
+        return treeNodes.getVisibleNode(position).depth()
     }
 
     fun toggleGroup(expandableTreeNode: ExpandableTreeNode<T>) {
         expandableTreeNode.expanded = !expandableTreeNode.expanded
         notifyDataSetChanged()
     }
-
-    fun expand(expandableTreeNode: ExpandableTreeNode<T>) {
-        expandableTreeNode.expanded = true
-        notifyDataSetChanged()
-    }
-
-    fun collapse(expandableTreeNode: ExpandableTreeNode<T>) {
-        expandableTreeNode.expanded = false
-        notifyDataSetChanged()
-    }
 }

expandable-recyclerview/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Expandable RecyclerView</string>
+</resources>

expandable-recyclerview/src/test/java/com/github/adriankuta/expandable_recyclerview/ExampleUnitTest.kt

@@ -1,8 +1,9 @@
 package com.github.adriankuta.expandable_recyclerview
 
-import org.junit.Assert.assertEquals
 import org.junit.Test
 
+import org.junit.Assert.*
+
 /**
  * Example local unit test, which will execute on the development machine (host).
  *

expandable-recyclerview/src/test/java/com/github/adriankuta/expandable_recyclerview/ExpandableTreeNodeTest.kt

@@ -1,24 +0,0 @@
-package com.github.adriankuta.expandable_recyclerview
-
-import org.junit.Assert
-import org.junit.Test
-
-class ExpandableTreeNodeTest {
-
-    @Test
-    fun getVisibleNode() {
-        //given
-        val root = expandableTree("Root") {
-            child("Level 1") {
-                child("Level 2") {
-                    child("Level 3") {
-                        child("Level 4")
-                    }
-                }
-            }
-        }
-        root.expanded = false
-
-        Assert.assertEquals("Root", root.onlyVisibleItems().first().value)
-    }
-}

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip

scripts/publish-mavencentral.gradle

@@ -0,0 +1,122 @@
+task androidSourcesJar(type: Jar) {
+    archiveClassifier.set("sources")
+    from android.sourceSets.main.java.source
+}
+
+artifacts {
+    archives androidSourcesJar
+}
+
+apply plugin: 'maven-publish'
+apply plugin: 'signing'
+
+group = PUBLISH_GROUP_ID
+version = PUBLISH_VERSION
+
+ext["signing.keyId"] = ''
+ext["signing.password"] = ''
+ext["signing.secretKeyRingFile"] = ''
+ext["ossrhUsername"] = ''
+ext["ossrhPassword"] = ''
+
+File secretPropsFile = project.rootProject.file('local.properties')
+if (secretPropsFile.exists()) {
+    println "Found secret props file, loading props"
+    Properties p = new Properties()
+    p.load(new FileInputStream(secretPropsFile))
+    p.each { name, value ->
+        ext[name] = value
+    }
+} else {
+    println "No props file, loading env vars"
+    ext["signing.keyId"] = System.getenv('SIGNING_KEY_ID')
+    ext["signing.password"] = System.getenv('SIGNING_PASSWORD')
+    ext["signing.secretKeyRingFile"] = System.getenv('SIGNING_SECRET_KEY_RING_FILE')
+    ext["ossrhUsername"] = System.getenv('OSSRH_USERNAME')
+    ext["ossrhPassword"] = System.getenv('OSSRH_PASSWORD')
+}
+
+nexusStaging {
+    packageGroup = PUBLISH_GROUP_ID
+    stagingProfileId = '2097bad464f778'
+    username = ossrhUsername
+    password = ossrhPassword
+}
+
+publishing {
+    publications {
+        release(MavenPublication) {
+            // The coordinates of the library, being set from variables that
+            // we'll set up in a moment
+            groupId PUBLISH_GROUP_ID
+            artifactId PUBLISH_ARTIFACT_ID
+            version PUBLISH_VERSION
+
+            // Two artifacts, the `aar` and the sources
+            artifact("$buildDir/outputs/aar/${project.getName()}-release.aar")
+            artifact androidSourcesJar
+
+            // Self-explanatory metadata for the most part
+            pom {
+                name = PUBLISH_ARTIFACT_ID
+                description = 'Multilevel expandable recyclerView.'
+                // If your project has a dedicated site, use its URL here
+                url = 'https://github.com/AdrianKuta/Expandable-RecyclerView'
+                licenses {
+                    license {
+                        name = 'Apache License 2.0'
+                        url = 'https://github.com/AdrianKuta/Expandable-RecyclerView/blob/master/LICENSE'
+                    }
+                }
+                developers {
+                    developer {
+                        name = 'Adrian Kuta'
+                        email = 'adrian.kuta93@gmail.com'
+                    }
+                }
+                // Version control info, if you're using GitHub, follow the format as seen here
+                scm {
+                    connection = 'scm:git:github.com/AdrianKuta/Expandable-RecyclerView.git'
+                    developerConnection = 'scm:git:ssh://github.com/AdrianKuta/Expandable-RecyclerView.git'
+                    url = 'https://github.com/AdrianKuta/Expandable-RecyclerView/tree/master'
+                }
+                // A slightly hacky fix so that your POM will include any transitive dependencies
+                // that your library builds upon
+                withXml {
+                    def dependenciesNode = asNode().appendNode('dependencies')
+
+                    project.configurations.implementation.allDependencies.each {
+                        def dependencyNode = dependenciesNode.appendNode('dependency')
+                        dependencyNode.appendNode('groupId', it.group)
+                        dependencyNode.appendNode('artifactId', it.name)
+                        dependencyNode.appendNode('version', it.version)
+                    }
+                }
+            }
+        }
+    }
+    repositories {
+        // The repository to publish to, Sonatype/MavenCentral
+        maven {
+            // This is an arbitrary name, you may also use "mavencentral" or
+            // any other name that's descriptive for you
+            name = "sonatype"
+
+            def releasesRepoUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2/"
+            def snapshotsRepoUrl = "https://oss.sonatype.org/content/repositories/snapshots/"
+            // You only need this if you want to publish snapshots, otherwise just set the URL
+            // to the release repo directly
+            url = version.endsWith('SNAPSHOT') ? snapshotsRepoUrl : releasesRepoUrl
+
+            // The username and password we've fetched earlier
+            credentials {
+                username ossrhUsername
+                password ossrhPassword
+            }
+        }
+    }
+}
+
+signing {
+    sign publishing.publications
+}

scripts/publish-module.gradle

@@ -1,86 +0,0 @@
-apply plugin: 'maven-publish'
-apply plugin: 'signing'
-apply plugin: 'org.jetbrains.dokka'
-
-task androidSourcesJar(type: Jar) {
-    archiveClassifier.set('sources')
-    if (project.plugins.findPlugin("com.android.library")) {
-        from android.sourceSets.main.java.srcDirs
-        from android.sourceSets.main.kotlin.srcDirs
-    } else {
-        from sourceSets.main.java.srcDirs
-        from sourceSets.main.kotlin.srcDirs
-    }
-}
-
-tasks.withType(dokkaHtmlPartial.getClass()).configureEach {
-    pluginsMapConfiguration.set(
-            ["org.jetbrains.dokka.base.DokkaBase": """{ "separateInheritedMembers": true}"""]
-    )
-}
-
-task javadocJar(type: Jar, dependsOn: dokkaJavadoc) {
-    archiveClassifier.set('javadoc')
-    from dokkaJavadoc.outputDirectory
-}
-
-artifacts {
-    archives androidSourcesJar
-    archives javadocJar
-}
-
-group = PUBLISH_GROUP_ID
-version = PUBLISH_VERSION
-
-afterEvaluate {
-    publishing {
-        publications {
-            release(MavenPublication) {
-                groupId PUBLISH_GROUP_ID
-                artifactId PUBLISH_ARTIFACT_ID
-                version PUBLISH_VERSION
-                if (project.plugins.findPlugin("com.android.library")) {
-                    from components.release
-                } else {
-                    from components.java
-                }
-
-                artifact androidSourcesJar
-                artifact javadocJar
-
-                pom {
-                    name = PUBLISH_ARTIFACT_ID
-                    description = 'Simple implementation to store object in tree structure.'
-                    url = 'https://github.com/AdrianKuta/Tree-Data-Structure'
-                    licenses {
-                        license {
-                            name = 'MIT License'
-                            url = 'https://www.mit.edu/~amini/LICENSE.md'
-                        }
-                    }
-                    developers {
-                        developer {
-                            name = 'Adrian Kuta'
-                            email = 'adrian.kuta93@gmail.com'
-                        }
-                    }
-                    // Version control info, if you're using GitHub, follow the format as seen here
-                    scm {
-                        connection = 'scm:git:github.com/AdrianKuta/Tree-Data-Structure.git'
-                        developerConnection = 'scm:git:ssh://github.com/AdrianKuta/Tree-Data-Structure.git'
-                        url = 'https://github.com/AdrianKuta/Tree-Data-Structure/tree/master'
-                    }
-                }
-            }
-        }
-    }
-}
-
-signing {
-    useInMemoryPgpKeys(
-            rootProject.ext["signing.keyId"],
-            rootProject.ext["signing.key"],
-            rootProject.ext["signing.password"],
-    )
-    sign publishing.publications
-}

scripts/publish-root.gradle

@@ -1,43 +0,0 @@
-// Create variables with empty default values
-ext["ossrhUsername"] = ''
-ext["ossrhPassword"] = ''
-ext["sonatypeStagingProfileId"] = ''
-ext["signing.keyId"] = ''
-ext["signing.password"] = ''
-ext["signing.key"] = ''
-ext["snapshot"] = ''
-
-File secretPropsFile = project.rootProject.file('local.properties')
-if (secretPropsFile.exists()) {
-    // Read local.properties file first if it exists
-    Properties p = new Properties()
-    new FileInputStream(secretPropsFile).withCloseable { is -> p.load(is) }
-    p.each { name, value -> ext[name] = value }
-} else {
-    // Use system environment variables
-    ext["ossrhUsername"] = System.getenv('OSSRH_USERNAME')
-    ext["ossrhPassword"] = System.getenv('OSSRH_PASSWORD')
-    ext["sonatypeStagingProfileId"] = System.getenv('SONATYPE_STAGING_PROFILE_ID')
-    ext["signing.keyId"] = System.getenv('SIGNING_KEY_ID')
-    ext["signing.password"] = System.getenv('SIGNING_PASSWORD')
-    ext["signing.key"] = System.getenv('SIGNING_KEY')
-    ext["snapshot"] = System.getenv('SNAPSHOT')
-}
-
-//if (snapshot) {
-//    ext["rootVersionName"] = Configuration.snapshotVersionName
-//} else {
-//    ext["rootVersionName"] = Configuration.versionName
-//}
-
-// Set up Sonatype repository
-nexusPublishing {
-    repositories {
-        sonatype {
-            stagingProfileId = sonatypeStagingProfileId
-            username = ossrhUsername
-            password = ossrhPassword
-            //version = rootVersionName
-        }
-    }
-}