Show a confirmation dialog before deleting sources (#185)

## Types of changes

- [ x ] I have read the **CONTRIBUTING** document.
- [ x ] My code follows the code style of this project.
- [ ] I have updated the documentation accordingly.
- [ ] I have added tests to cover my changes.
- [ x ] All new and existing tests passed.
- [ x ] This is **NOT** translation related.

This is implements feature #156

I added a confirmation dialogue which pops up after tapping the delete source button. The popup displays the full name of the source to be deleted and allows the user to decide not to delete the source to prevent erroneous deletions.

I moved most of the logic into the viewholder. Can be easily reverted if you prefer.

All tests pass. I tested correct behavior in emulated versions of android API 25, 34 and 35.

Co-authored-by: Amine <amine.bouabdallaoui@pm.me>
Reviewed-on: #185
Co-authored-by: davidoskky <davidoskky@yahoo.it>
Co-committed-by: davidoskky <davidoskky@yahoo.it>

androidApp/src/main/java/bou/amine/apps/readerforselfossv2/android/adapters/SourcesListAdapter.kt

@@ -6,9 +6,8 @@ import android.content.Intent
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.Button
 import android.widget.Toast
-import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.appcompat.app.AlertDialog
 import androidx.recyclerview.widget.RecyclerView
 import bou.amine.apps.readerforselfossv2.android.R
 import bou.amine.apps.readerforselfossv2.android.UpsertSourceActivity
@@ -32,69 +31,21 @@ class SourcesListAdapter(
     private val items: ArrayList<SelfossModel.SourceDetail>,
 ) : RecyclerView.Adapter<SourcesListAdapter.ViewHolder>(),
     DIAware {
-    private val c: Context = app.baseContext
-    private lateinit var binding: SourceListItemBinding
-
     override val di: DI by closestDI(app)
-    private val repository: Repository by instance()
-    private val appSettingsService: AppSettingsService by instance()
 
     override fun onCreateViewHolder(
         parent: ViewGroup,
         viewType: Int,
     ): ViewHolder {
-        binding = SourceListItemBinding.inflate(LayoutInflater.from(parent.context), parent, false)
+        val binding = SourceListItemBinding.inflate(LayoutInflater.from(parent.context), parent, false)
-        return ViewHolder(binding.root)
+        return ViewHolder(binding)
     }
 
     override fun onBindViewHolder(
         holder: ViewHolder,
         position: Int,
     ) {
-        val itm = items[position]
+        holder.bind(items[position], position)
-
-        val deleteBtn: Button = holder.mView.findViewById(R.id.deleteBtn)
-
-        deleteBtn.setOnClickListener {
-            val (id, title) = items[position]
-            CoroutineScope(Dispatchers.IO).launch {
-                val successfullyDeletedSource = repository.deleteSource(id, title)
-                if (successfullyDeletedSource) {
-                    items.removeAt(position)
-                    notifyItemRemoved(position)
-                    notifyItemRangeChanged(position, itemCount)
-                } else {
-                    Toast
-                        .makeText(
-                            app,
-                            R.string.can_delete_source,
-                            Toast.LENGTH_SHORT,
-                        ).show()
-                }
-            }
-        }
-
-        holder.mView.setOnClickListener {
-            val source = items[position]
-
-            repository.setSelectedSource(source)
-            app.startActivity(Intent(app, UpsertSourceActivity::class.java))
-        }
-
-        if (itm.getIcon(repository.baseUrl).isEmpty()) {
-            binding.itemImage.setBackgroundAndText(itm.title.getHtmlDecoded())
-        } else {
-            c.circularDrawable(itm.getIcon(repository.baseUrl), binding.itemImage, appSettingsService)
-        }
-
-        if (!itm.error.isNullOrBlank()) {
-            binding.errorText.visibility = View.VISIBLE
-            binding.errorText.text = itm.error
-        } else {
-            binding.errorText.visibility = View.GONE
-        }
-
-        binding.sourceTitle.text = itm.title.getHtmlDecoded()
     }
 
     override fun getItemId(position: Int) = position.toLong()
@@ -104,6 +55,72 @@ class SourcesListAdapter(
     override fun getItemCount(): Int = items.size
 
     inner class ViewHolder(
-        val mView: ConstraintLayout,
+        val binding: SourceListItemBinding,
-    ) : RecyclerView.ViewHolder(mView)
+    ) : RecyclerView.ViewHolder(binding.root) {
+        private val context: Context = app.applicationContext
+        private val repository: Repository by instance()
+        private val appSettingsService: AppSettingsService by instance()
+
+        fun bind(
+            source: SelfossModel.SourceDetail,
+            position: Int,
+        ) {
+            binding.apply {
+                sourceTitle.text = source.title.getHtmlDecoded()
+                if (source.getIcon(repository.baseUrl).isEmpty()) {
+                    itemImage.setBackgroundAndText(source.title.getHtmlDecoded())
+                } else {
+                    context.circularDrawable(source.getIcon(repository.baseUrl), itemImage, appSettingsService)
+                }
+
+                errorText.apply {
+                    visibility = if (!source.error.isNullOrBlank()) View.VISIBLE else View.GONE
+                    text = source.error
+                }
+
+                deleteBtn.setOnClickListener { showDeleteConfirmationDialog(source, position) }
+
+                root.setOnClickListener {
+                    repository.setSelectedSource(source)
+                    app.startActivity(Intent(app, UpsertSourceActivity::class.java))
+                }
+            }
+        }
+
+        private fun showDeleteConfirmationDialog(
+            source: SelfossModel.SourceDetail,
+            position: Int,
+        ) {
+            AlertDialog
+                .Builder(app)
+                .setTitle(app.getString(R.string.confirm_delete_title))
+                .setMessage(app.getString(R.string.confirm_delete_message, source.title))
+                .setPositiveButton(android.R.string.ok) { _, _ -> deleteSource(source, position) }
+                .setNegativeButton(android.R.string.cancel, null)
+                .show()
+        }
+
+        private fun deleteSource(
+            source: SelfossModel.SourceDetail,
+            position: Int,
+        ) {
+            CoroutineScope(Dispatchers.IO).launch {
+                val successfullyDeletedSource = repository.deleteSource(source.id, source.title)
+                launch(Dispatchers.Main) {
+                    if (successfullyDeletedSource) {
+                        items.removeAt(position)
+                        notifyItemRemoved(position)
+                        notifyItemRangeChanged(position, itemCount)
+                    } else {
+                        Toast
+                            .makeText(
+                                app,
+                                R.string.can_delete_source,
+                                Toast.LENGTH_SHORT,
+                            ).show()
+                    }
+                }
+            }
+        }
+    }
 }

androidApp/src/main/res/values-ca-rES/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Quant a"</string>
     <string name="marked_as_read">"Element llegit"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-de-rDE/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Über"</string>
     <string name="marked_as_read">"Artikel gelesen"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-es-rES/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Acerca de"</string>
     <string name="marked_as_read">"Artículo leído"</string>
     <string name="marked_as_unread">"Artículo no leído"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-fr-rFR/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"À propos"</string>
     <string name="marked_as_read">"Marqué comme lu"</string>
     <string name="marked_as_unread">"Marqué comme non lu"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-gl-rES/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Acerca de"</string>
     <string name="marked_as_read">"Elemento lido"</string>
     <string name="marked_as_unread">"Elemento non lido"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-in-rID/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Tentang"</string>
     <string name="marked_as_read">"Membaca item"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-it-rIT/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Informazioni"</string>
     <string name="marked_as_read">"Articolo letto"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-ko-rKR/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"정보"</string>
     <string name="marked_as_read">"항목 읽기"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-nl-rNL/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Over"</string>
     <string name="marked_as_read">"Artikel gelezen"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-pt-rBR/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Sobre"</string>
     <string name="marked_as_read">"Item lido"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-pt-rPT/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Sobre"</string>
     <string name="marked_as_read">"Item lido"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-si-rLK/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"මේ ගැන"</string>
     <string name="marked_as_read">"Item read"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-tr-rTR/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"Hakkında"</string>
     <string name="marked_as_read">"Öğeleri oku"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-zh-rCN/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"关于我们"</string>
     <string name="marked_as_read">"已读"</string>
     <string name="marked_as_unread">"未读条目"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values-zh-rTW/strings.xml

@@ -129,4 +129,6 @@
     <string name="action_about">"关于我们"</string>
     <string name="marked_as_read">"已读"</string>
     <string name="marked_as_unread">"未讀項目"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>

androidApp/src/main/res/values/strings.xml

@@ -131,4 +131,6 @@
     <string name="action_about">"About"</string>
     <string name="marked_as_read">"Item read"</string>
     <string name="marked_as_unread">"Item unread"</string>
+    <string name="confirm_delete_title">Confirm Deletion</string>
+    <string name="confirm_delete_message">Are you sure you want to delete the following source?\n%s</string>
 </resources>