Tela categoria 4 - Comportamentos implementados

app/src/main/java/com/felcks/desafiofulllab/ui/categoria/CategoriaActivity.kt

@@ -2,6 +2,7 @@ package com.felcks.desafiofulllab.ui.categoria
 
 import android.os.Bundle
 import android.view.Menu
+import android.widget.Toast
 import androidx.appcompat.app.ActionBar
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.AppCompatImageView
@@ -10,15 +11,10 @@ import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.felcks.desafiofulllab.App
 import com.felcks.desafiofulllab.R
-import com.felcks.desafiofulllab.api.RestApi
-import com.felcks.desafiofulllab.common.repository.CategoryRepository
 import com.felcks.desafiofulllab.common.viewmodel.Response
 import com.felcks.desafiofulllab.common.viewmodel.Status
 import com.felcks.desafiofulllab.databinding.ActivityCategoriaBinding
 import kotlinx.android.synthetic.main.activity_categoria.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
 import org.koin.android.ext.android.inject
 
 class CategoriaActivity: AppCompatActivity(){
@@ -64,14 +60,33 @@ class CategoriaActivity: AppCompatActivity(){
             rv_list.layoutManager = layoutManager
             rv_list.setItemViewCacheSize(listCategory.size)
 
-            this.adapter = CategoriaAdapter(listCategory)
+            this.adapter = CategoriaAdapter(listCategory, categoriaClickListener)
             rv_list.adapter = adapter
         }
         else{
             this.adapter?.updateAllItens(listCategory)
         }
     }
 
+    private fun updateToolbarTitle(){
+
+        val tipoCategoria = viewModel.getCurrentType()
+        supportActionBar?.title = tipoCategoria?.name ?: "Categoria"
+    }
+
+    private val categoriaClickListener = object : TwoParametersClickListener {
+        override fun onClick(pos: Int, obj: Any) {
+
+            try{
+                viewModel.selectItem(pos, obj)
+                updateToolbarTitle()
+            }
+            catch (e: Throwable){
+                Toast.makeText(this@CategoriaActivity, e.message, Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+
     override fun onCreateOptionsMenu(menu: Menu?): Boolean {
         val actionBar : ActionBar? = supportActionBar
         actionBar?.setDisplayHomeAsUpEnabled(true)
@@ -82,4 +97,20 @@ class CategoriaActivity: AppCompatActivity(){
         onBackPressed()
         return true
     }
+
+    override fun onBackPressed() {
+
+        val tipoCategoria = viewModel.getCurrentType()
+        if(tipoCategoria == TipoCategoriaDTO.Categoria)
+            super.onBackPressed()
+        else{
+            try{
+                viewModel.showHomeCategory()
+                updateToolbarTitle()
+            }
+            catch (e: Throwable){
+                Toast.makeText(this@CategoriaActivity, e.message, Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
 }

app/src/main/java/com/felcks/desafiofulllab/ui/categoria/CategoriaAdapter.kt

@@ -10,10 +10,11 @@ import com.felcks.desafiofulllab.App
 import com.felcks.desafiofulllab.R
 import kotlinx.android.synthetic.main.item_category.view.*
 
-class CategoriaAdapter(private var list: List<CategoriaDTO>):
+class CategoriaAdapter(private var list: List<CategoriaDTO>,
+                       private val selectCategoryListener: TwoParametersClickListener):
     RecyclerView.Adapter<CategoriaAdapter.MyViewHolder>() {
 
-    val mLayoutInflater: LayoutInflater = App.instance.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
+    private val mLayoutInflater: LayoutInflater = App.instance.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
         val view = mLayoutInflater.inflate(R.layout.item_category, parent, false)
@@ -27,7 +28,9 @@ class CategoriaAdapter(private var list: List<CategoriaDTO>):
         val item = list[position]
 
         holder.itemView.tv_name.text = item.name
-        //TODO implementar o clique
+        holder.itemView.layout_categoria.setOnClickListener {
+            selectCategoryListener.onClick(position, item)
+        }
     }
 
     fun updateAllItens(listCategory: List<CategoriaDTO>){

app/src/main/java/com/felcks/desafiofulllab/ui/categoria/CategoriaDTO.kt

@@ -1,4 +1,5 @@
 package com.felcks.desafiofulllab.ui.categoria
 
 class CategoriaDTO (val name: String,
-                    val icone: String?)
+                    val icone: String?,
+                    val tipo: TipoCategoriaDTO)

app/src/main/java/com/felcks/desafiofulllab/ui/categoria/CategoriaViewModel.kt

@@ -41,7 +41,7 @@ class CategoriaViewModel(private val categoryRepository: CategoryRepository) : V
                     listCategoryDomain = list
                     listCategory.postValue(Response.success(
                         list.map {
-                            CategoriaDTO(it.name, null)
+                            CategoriaDTO(it.name, null, TipoCategoriaDTO.Categoria)
                         }
                     ))
                 }
@@ -55,4 +55,38 @@ class CategoriaViewModel(private val categoryRepository: CategoryRepository) : V
             }
         }
     }
+
+    fun selectItem(pos: Int, obj: Any){
+
+        val categoriaDTO = obj as? CategoriaDTO
+            ?: throw Throwable("Função não implementada para esse objeto.")
+
+        if(categoriaDTO.tipo == TipoCategoriaDTO.Subcategoria)
+            throw Throwable("Pesquisa na subcategoria - função não implementada.")
+
+
+        val subCategorias = listCategoryDomain[pos].listSubCategories.map {
+            CategoriaDTO(it.name,
+                null,
+                TipoCategoriaDTO.Subcategoria)
+        }
+
+        listCategory.value = Response.success(subCategorias)
+    }
+
+    fun showHomeCategory(){
+
+        val categorias = this.listCategoryDomain.map {
+            CategoriaDTO(it.name,
+                null,
+                TipoCategoriaDTO.Categoria)
+        }
+
+        listCategory.value = Response.success(categorias)
+
+    }
+
+    fun getCurrentType(): TipoCategoriaDTO?{
+        return (this.listCategory.value?.data as? List<*>)?.filterIsInstance<CategoriaDTO>()?.first()?.tipo
+    }
 }

app/src/main/java/com/felcks/desafiofulllab/ui/categoria/TipoCategoriaDTO.kt

@@ -0,0 +1,6 @@
+package com.felcks.desafiofulllab.ui.categoria
+
+enum class TipoCategoriaDTO() {
+    Categoria,
+    Subcategoria
+}

app/src/main/java/com/felcks/desafiofulllab/ui/categoria/TwoParametersClickListener.kt

@@ -0,0 +1,5 @@
+package com.felcks.desafiofulllab.ui.categoria
+
+interface TwoParametersClickListener {
+    fun onClick(pos: Int, obj: Any)
+}