SearchView and Swipe Refresh

Author: mitchtabian

app/src/main/java/com/codingwithmitch/openapi/ui/main/blog/BlogFragment.kt

@@ -1,17 +1,25 @@
 package com.codingwithmitch.openapi.ui.main.blog
 
+import android.app.SearchManager
+import android.content.Context.SEARCH_SERVICE
 import android.os.Bundle
 import android.util.Log
 import android.view.*
+import android.view.inputmethod.EditorInfo
+import android.widget.EditText
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.SearchView
 import androidx.lifecycle.Observer
 import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
 import com.codingwithmitch.openapi.R
 import com.codingwithmitch.openapi.models.BlogPost
 import com.codingwithmitch.openapi.ui.DataState
 import com.codingwithmitch.openapi.ui.main.blog.state.BlogViewState
 import com.codingwithmitch.openapi.ui.main.blog.viewmodel.setBlogPost
+import com.codingwithmitch.openapi.ui.main.blog.viewmodel.setQuery
 import com.codingwithmitch.openapi.ui.main.blog.viewmodel.setQueryExhausted
 import com.codingwithmitch.openapi.util.ErrorHandling
 import com.codingwithmitch.openapi.util.TopSpacingItemDecoration
@@ -21,9 +29,11 @@ import loadFirstPage
 import nextPage
 
 class BlogFragment : BaseBlogFragment(),
-    BlogListAdapter.Interaction
+    BlogListAdapter.Interaction,
+    SwipeRefreshLayout.OnRefreshListener
 {
 
+    private lateinit var searchView: SearchView
     private lateinit var recyclerAdapter: BlogListAdapter
 
     override fun onCreateView(
@@ -36,13 +46,14 @@ class BlogFragment : BaseBlogFragment(),
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
+        (activity as AppCompatActivity).supportActionBar?.setDisplayShowTitleEnabled(false)
         setHasOptionsMenu(true)
 
         initRecyclerView()
         subscribeObservers()
 
         if(savedInstanceState == null){
-            viewModel.loadFirstPage()
+            onBlogSearchOrFilter()
         }
     }
 
@@ -66,6 +77,55 @@ class BlogFragment : BaseBlogFragment(),
         })
     }
 
+    private fun initSearchView(menu: Menu){
+        activity?.apply {
+            val searchManager: SearchManager = getSystemService(SEARCH_SERVICE) as SearchManager
+            searchView = menu.findItem(R.id.action_search).actionView as SearchView
+            searchView.setSearchableInfo(searchManager.getSearchableInfo(componentName))
+            searchView.maxWidth = Integer.MAX_VALUE
+            searchView.setIconifiedByDefault(true)
+            searchView.isSubmitButtonEnabled = true
+        }
+
+        // ENTER ON COMPUTER KEYBOARD OR ARROW ON VIRTUAL KEYBOARD
+        val searchPlate = searchView.findViewById(R.id.search_src_text) as EditText
+        searchPlate.setOnEditorActionListener { v, actionId, event ->
+
+            if (actionId == EditorInfo.IME_ACTION_UNSPECIFIED
+                || actionId == EditorInfo.IME_ACTION_SEARCH ) {
+                val searchQuery = v.text.toString()
+                Log.e(TAG, "SearchView: (keyboard or arrow) executing search...: ${searchQuery}")
+                viewModel.setQuery(searchQuery).let{
+                    onBlogSearchOrFilter()
+                }
+            }
+            true
+        }
+
+        // SEARCH BUTTON CLICKED (in toolbar)
+        val searchButton = searchView.findViewById(R.id.search_go_btn) as View
+        searchButton.setOnClickListener {
+            val searchQuery = searchPlate.text.toString()
+            Log.e(TAG, "SearchView: (button) executing search...: ${searchQuery}")
+            viewModel.setQuery(searchQuery).let {
+                onBlogSearchOrFilter()
+            }
+
+        }
+    }
+
+    private fun onBlogSearchOrFilter(){
+        viewModel.loadFirstPage().let {
+            resetUI()
+        }
+    }
+
+    private  fun resetUI(){
+        blog_post_recyclerview.smoothScrollToPosition(0)
+        stateChangeListener.hideSoftKeyboard()
+        focusable_view.requestFocus()
+    }
+
     private fun handlePagination(dataState: DataState<BlogViewState>){
 
         // Handle incoming data from DataState
@@ -120,6 +180,12 @@ class BlogFragment : BaseBlogFragment(),
         }
     }
 
+    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+        super.onCreateOptionsMenu(menu, inflater)
+        inflater.inflate(R.menu.search_menu, menu)
+        initSearchView(menu)
+    }
+
     override fun onItemSelected(position: Int, item: BlogPost) {
         viewModel.setBlogPost(item)
         findNavController().navigate(R.id.action_blogFragment_to_viewBlogFragment)
@@ -130,6 +196,11 @@ class BlogFragment : BaseBlogFragment(),
         // clear references (can leak memory)
         blog_post_recyclerview.adapter = null
     }
+
+    override fun onRefresh() {
+        onBlogSearchOrFilter()
+        swipe_refresh.isRefreshing = false
+    }
 }