Can delete input certificate

.idea/misc.xml

@@ -13,6 +13,7 @@
         <entry key="app/src/main/res/layout/fragment_first.xml" value="0.29483695652173914" />
         <entry key="app/src/main/res/layout/fragment_second.xml" value="0.29483695652173914" />
         <entry key="app/src/main/res/layout/qr_entry.xml" value="0.28125" />
+        <entry key="app/src/main/res/menu/cert_menu.xml" value="0.3697916666666667" />
         <entry key="app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml" value="0.3859375" />
       </map>
     </option>

app/src/main/java/org/communiquons/dccaggregator/activities/CertsManager.kt

@@ -1,7 +1,11 @@
 package org.communiquons.dccaggregator.activities
 
+import android.app.AlertDialog
 import android.os.Bundle
+import android.view.ContextMenu
 import android.view.MenuItem
+import android.view.View
+import android.widget.AdapterView
 import android.widget.Toast
 import com.journeyapps.barcodescanner.ScanContract
 import com.journeyapps.barcodescanner.ScanOptions
@@ -36,6 +40,7 @@ class CertsManager : BaseActivity() {
 
         // Initialize certificates list
         binding.certsList.adapter = listAdapter
+        registerForContextMenu(binding.certsList)
 
         binding.scanCertButton.setOnClickListener {
             addNewCertificate()
@@ -98,4 +103,39 @@ class CertsManager : BaseActivity() {
 
         listAdapter.notifyDataSetChanged()
     }
+
+    override fun onCreateContextMenu(
+        menu: ContextMenu?,
+        v: View?,
+        menuInfo: ContextMenu.ContextMenuInfo?
+    ) {
+        super.onCreateContextMenu(menu, v, menuInfo)
+        if (v == binding.certsList)
+            menuInflater.inflate(R.menu.cert_menu, menu)
+    }
+
+    override fun onContextItemSelected(item: MenuItem): Boolean {
+
+        if (item.itemId == R.id.delete_cert) {
+            val pos = (item.menuInfo as AdapterView.AdapterContextMenuInfo).position
+            confirmDeleteCertificate(certsList.get(pos))
+            return true
+        }
+
+        return super.onContextItemSelected(item)
+    }
+
+    private fun confirmDeleteCertificate(cert: Certificate) {
+        AlertDialog.Builder(this).apply {
+            setTitle(R.string.remove_cert)
+            setMessage(R.string.msg_confirm_remove_cert)
+            setNegativeButton(R.string.no, null)
+            setPositiveButton(R.string.delete_cert) { _, _ ->
+                certsManager.removeCertificate(cert)
+                refreshList()
+            }
+            setIcon(R.drawable.ic_warning)
+            show()
+        }
+    }
 }

app/src/main/java/org/communiquons/dccaggregator/helper/CertificatesList.kt

@@ -37,4 +37,13 @@ class CertificatesList(context: Context) {
         list.add(cert.encoded)
         listString = list
     }
+
+    /**
+     * Remove a certificate from the list
+     */
+    fun removeCertificate(cert: Certificate) {
+        val list = HashSet(listString)
+        list.remove(cert.encoded)
+        listString = list
+    }
 }

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

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M1,21h22L12,2 1,21zM13,18h-2v-2h2v2zM13,14h-2v-4h2v4z"/>
+</vector>

app/src/main/res/menu/cert_menu.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/delete_cert"
+        android:title="@string/delete_cert" />
+</menu>

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

@@ -18,4 +18,8 @@
     <string name="desc_vaccine_certificate">Vaccine certificate\nDose %1$d / %2$d\nDate: %3$s\nType: %4$s</string>
     <string name="desc_recovery_certificate">Recovery certificate\nTested positive on %1$s</string>
     <string name="desc_unknown_certificate">Unknown certificate type</string>
+    <string name="delete_cert">Delete certificate</string>
+    <string name="remove_cert">Remove certificate</string>
+    <string name="msg_confirm_remove_cert">Do you really want to remove this certificate from the list?</string>
+    <string name="no">No</string>
 </resources>