BaseRecyclerView added

Kirito398 · Kirito398 · commit 89582261b381 · 2021-03-12T16:34:07.000+03:00
diff --git a/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/BaseViewHolder.kt b/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/BaseViewHolder.kt
@@ -0,0 +1,15 @@
+package ru.sir.presentation.base.recycler_view
+
+import androidx.databinding.ViewDataBinding
+import androidx.recyclerview.widget.RecyclerView
+import ru.sir.presentation.base.BaseViewModel
+
+class BaseViewHolder<M, I : RecyclerViewBaseItem<M, out BaseViewModel>>(
+    private val binding: ViewDataBinding,
+    private val viewModel: I
+) : RecyclerView.ViewHolder(binding.root) {
+
+    fun bindData(item: M) {
+        viewModel.bindData(item)
+    }
+}
diff --git a/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/RecyclerViewAdapter.kt b/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/RecyclerViewAdapter.kt
@@ -0,0 +1,40 @@
+package ru.sir.presentation.base.recycler_view
+
+import android.view.ViewGroup
+import androidx.annotation.LayoutRes
+import androidx.recyclerview.widget.RecyclerView
+import ru.sir.presentation.base.BaseViewModel
+import java.lang.IllegalStateException
+
+class RecyclerViewAdapter(private val producers: MutableMap<Int, ViewHolderProducer<*, *, *>>) : RecyclerView.Adapter<BaseViewHolder>() {
+
+    private var data = mutableListOf<String>()
+
+    class Builder<VM : BaseViewModel>(private val viewModel: VM) {
+        private val producers = mutableMapOf<Int, ViewHolderProducer<*, *, *>>()
+
+        fun <M, I : RecyclerViewBaseItem<M, VM>> addProducer(type: Int, @LayoutRes layoutId: Int, modelClassType: Class<M>, itemViewModelClassType: Class<I>): Builder<VM> {
+            val producer: ViewHolderProducer<M, I, VM> = ViewHolderProducer(type, layoutId, modelClassType, itemViewModelClassType)
+            return addProducer(producer)
+        }
+
+        fun <M, I : RecyclerViewBaseItem<M, VM>> addProducer(producer: ViewHolderProducer<M, I, VM>): Builder<VM> {
+            producer.setParentViewModel(viewModel)
+            producers[producer.getViewType()] = producer
+            return this
+        }
+
+        fun build() = RecyclerViewAdapter(producers)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder<*, *> {
+        return producers[viewType]?.produce(parent)
+            ?: throw IllegalStateException("View Holder Producer not found!")
+    }
+
+    override fun onBindViewHolder(holder: BaseViewHolder<*, *>, position: Int) {
+        holder.bindData(data[position])
+    }
+
+    override fun getItemCount(): Int = data.size
+}
diff --git a/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/RecyclerViewBaseItem.kt b/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/RecyclerViewBaseItem.kt
@@ -0,0 +1,13 @@
+package ru.sir.presentation.base.recycler_view
+
+import ru.sir.presentation.base.BaseViewModel
+
+abstract class RecyclerViewBaseItem<M, VM : BaseViewModel> {
+    protected lateinit var parent: VM
+
+    fun init(parent: VM) {
+        this.parent = parent
+    }
+
+    abstract fun bindData(data: M)
+}
diff --git a/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/ViewHolderProducer.kt b/entities/presentation/src/main/java/ru/sir/presentation/base/recycler_view/ViewHolderProducer.kt
@@ -0,0 +1,35 @@
+package ru.sir.presentation.base.recycler_view
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.annotation.LayoutRes
+import androidx.databinding.DataBindingUtil
+import androidx.databinding.ViewDataBinding
+import ru.sir.presentation.base.BaseViewModel
+
+class ViewHolderProducer<M, I : RecyclerViewBaseItem<M, VM>, VM : BaseViewModel>(val type: Int, @LayoutRes val layoutId: Int, val modelClassType: Class<M>, private val itemViewModelClassType: Class<I>) {
+    private lateinit var parentViewModel: VM
+
+    fun setParentViewModel(viewModel: VM) {
+        parentViewModel = viewModel
+    }
+
+    fun getViewType() = type
+
+    fun produce(parent: ViewGroup): BaseViewHolder<M, I> {
+        val binding = DataBindingUtil.inflate<ViewDataBinding>(
+            LayoutInflater.from(parent.context),
+            layoutId,
+            parent,
+            false
+        )
+
+        return BaseViewHolder(binding, instantiateViewModel())
+    }
+
+    private fun instantiateViewModel(): I {
+        val viewModelClass = itemViewModelClassType.newInstance()
+        viewModelClass.init(parentViewModel)
+        return viewModelClass
+    }
+}
diff --git a/features/example1/build.gradle b/features/example1/build.gradle
@@ -55,4 +55,6 @@ dependencies {
     implementation constraintLayout
     implementation dagger
     kapt daggerCompiler
+
+    implementation recyclerView
 }
diff --git a/features/example1/src/main/java/ru/bis/example1/ui/adapters/Example1Adapter.kt b/features/example1/src/main/java/ru/bis/example1/ui/adapters/Example1Adapter.kt
@@ -0,0 +1,28 @@
+package ru.bis.example1.ui.adapters
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.databinding.DataBindingUtil
+import androidx.recyclerview.widget.RecyclerView
+import ru.bis.example1.R
+import ru.bis.example1.databinding.ItemExample1Binding
+
+class Example1Adapter(private val items: MutableList<String>): RecyclerView.Adapter<Example1ViewHolder>() {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): Example1ViewHolder {
+        val binding = DataBindingUtil.inflate<ItemExample1Binding>(
+            LayoutInflater.from(parent.context),
+            R.layout.item_example1,
+            parent,
+            false
+        )
+
+        return Example1ViewHolder(binding)
+    }
+
+    override fun onBindViewHolder(holder: Example1ViewHolder, position: Int) {
+        holder.bind(items[position])
+    }
+
+    override fun getItemCount(): Int = items.size
+}
diff --git a/features/example1/src/main/java/ru/bis/example1/ui/adapters/Example1ViewHolder.kt b/features/example1/src/main/java/ru/bis/example1/ui/adapters/Example1ViewHolder.kt
@@ -0,0 +1,15 @@
+package ru.bis.example1.ui.adapters
+
+import androidx.recyclerview.widget.RecyclerView
+import ru.bis.example1.databinding.ItemExample1Binding
+import ru.bis.example1.view_models.ItemViewModel
+
+class Example1ViewHolder(private val binding: ItemExample1Binding) : RecyclerView.ViewHolder(binding.root) {
+    init {
+        binding.viewModel = ItemViewModel()
+    }
+
+    fun bind(item: String) {
+        binding.viewModel?.title?.set(item)
+    }
+}
diff --git a/features/example1/src/main/java/ru/bis/example1/view_models/CustomDataBinding.kt b/features/example1/src/main/java/ru/bis/example1/view_models/CustomDataBinding.kt
@@ -0,0 +1,10 @@
+package ru.bis.example1.view_models
+
+import androidx.databinding.BindingAdapter
+import androidx.recyclerview.widget.RecyclerView
+import ru.sir.presentation.base.recycler_view.RecyclerViewAdapter
+
+@BindingAdapter(value = ["recyclerAdapter"], requireAll = false)
+fun setRecyclerAdapter(view: RecyclerView, adapter: RecyclerViewAdapter) {
+    view.adapter = adapter
+}
diff --git a/features/example1/src/main/java/ru/bis/example1/view_models/Example1ViewModel.kt b/features/example1/src/main/java/ru/bis/example1/view_models/Example1ViewModel.kt
@@ -2,10 +2,13 @@ package ru.bis.example1.view_models
 
 import android.app.Application
 import androidx.databinding.ObservableField
+import androidx.recyclerview.widget.RecyclerView
 import ru.bis.example1.R
+import ru.bis.example1.ui.adapters.Example1Adapter
 import ru.bis.example1_api.interactor.GetDataFromCache
 import ru.sir.core.None
 import ru.sir.presentation.base.BaseViewModel
+import ru.sir.presentation.base.recycler_view.RecyclerViewAdapter
 import javax.inject.Inject
 
 class Example1ViewModel @Inject constructor(
@@ -14,9 +17,15 @@ class Example1ViewModel @Inject constructor(
     ) : BaseViewModel(application) {
 
     val result = ObservableField<String>()
+    val items = mutableListOf<String>()
 
     override fun init() {
         getDataFromCache(None()) { it.either(::onLoadDataFromCacheFailed, ::onLoadDataFromCacheSuccess) }
+
+        items.add("String 1")
+        items.add("String 2")
+        items.add("String 3")
+        items.add("String 4")
     }
 
     private fun onLoadDataFromCacheSuccess(data: String) {
@@ -26,4 +35,8 @@ class Example1ViewModel @Inject constructor(
     private fun onLoadDataFromCacheFailed(failed: None) {
         result.set(context.getString(R.string.load_data_failed))
     }
+
+    fun recyclerViewAdapter() = RecyclerViewAdapter.Builder(this)
+        .addProducer(1, R.layout.item_example1, String::class.java, ItemViewModel::class.java)
+        .build()
 }
diff --git a/features/example1/src/main/java/ru/bis/example1/view_models/ItemViewModel.kt b/features/example1/src/main/java/ru/bis/example1/view_models/ItemViewModel.kt
@@ -0,0 +1,12 @@
+package ru.bis.example1.view_models
+
+import androidx.databinding.ObservableField
+import ru.sir.presentation.base.recycler_view.RecyclerViewBaseItem
+
+class ItemViewModel : RecyclerViewBaseItem<String, Example1ViewModel>() {
+    val title = ObservableField("")
+
+    override fun bindData(data: String) {
+        title.set(data)
+    }
+}
diff --git a/features/example1/src/main/res/layout/fragment_example1.xml b/features/example1/src/main/res/layout/fragment_example1.xml
@@ -33,5 +33,15 @@
         app:layout_constraintTop_toTopOf="parent"
         android:text="@{viewModel.result}"/>
 
+    <androidx.recyclerview.widget.RecyclerView
+        android:layout_height="0dp"
+        android:layout_width="match_parent"
+        app:layout_constraintTop_toBottomOf="@id/text"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        recyclerAdapter="@{viewModel.recyclerViewAdapter()}"
+        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>
+
 </androidx.constraintlayout.widget.ConstraintLayout>
 </layout>
diff --git a/features/example1/src/main/res/layout/item_example1.xml b/features/example1/src/main/res/layout/item_example1.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+        <variable
+            name="viewModel"
+            type="ru.bis.example1.view_models.ItemViewModel" />
+    </data>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        xmlns:app="http://schemas.android.com/apk/res-auto">
+
+        <androidx.appcompat.widget.AppCompatTextView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            android:text="@{viewModel.title}"
+            tools:text="Item"
+            android:padding="10dp"/>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</layout>

Original file line number	Diff line number	Diff line change
`@@ -55,4 +55,6 @@ dependencies {`
`55`	`55`	`implementation constraintLayout`
`56`	`56`	`implementation dagger`
`57`	`57`	`kapt daggerCompiler`
	`58`	`+`
	`59`	`+ implementation recyclerView`
`58`	`60`	`}`