details: connect leave conversation (group)

Show `leave conversation` option for group conversation.
Connect the button to logic.

GitLab: #1723
Change-Id: Ia8ee641fb10ebb41bb2553882280253f5e718d4a

jami-android/app/src/main/java/cx/ring/fragments/ConversationActionsFragment.kt

@@ -240,6 +240,19 @@ class ConversationActionsFragment : Fragment() {
             }
         } else {    // If conversation mode is not one to one
             conversationDelete.text = resources.getString(R.string.leave_conversation)
+            conversationDelete.setOnClickListener {
+                ActionHelper.launchDeleteSwarmGroupAction(
+                    context = requireContext(),
+                    accountId = mAccountService.currentAccount!!.accountId,
+                    uri = conversation.uri,
+                    callback = { accountId: String, conversationUri: Uri ->
+                        mConversationFacade.removeConversation(accountId, conversationUri)
+                            .subscribe().apply { mDisposableBag.add(this) }
+                        // Result is OK, should be interpreted to go back to home.
+                        requireActivity().setResult(Activity.RESULT_OK)
+                        requireActivity().finish()
+                    })
+            }
             blockSwitch.isVisible = false
         }
 

jami-android/app/src/main/java/cx/ring/utils/ActionHelper.kt

@@ -129,6 +129,19 @@ object ActionHelper {
             .show()
     }
 
+    fun launchDeleteSwarmGroupAction(
+        context: Context,
+        accountId: String,
+        uri: Uri,
+        callback: (accountId: String, uri: Uri) -> Unit,
+    ) {
+        MaterialAlertDialogBuilder(context)
+            .setTitle(R.string.swarm_group_action_leave_title)
+            .setMessage(R.string.swarm_group_action_leave_message)
+            .setPositiveButton(android.R.string.ok) { _, _ -> callback(accountId, uri) }
+            .setNegativeButton(android.R.string.cancel) { _, _ -> }.show()
+    }
+
     fun getAddNumberIntentForContact(contact: Contact): Intent {
         val intent = Intent(Intent.ACTION_INSERT_OR_EDIT)
         intent.type = ContactsContract.Contacts.CONTENT_ITEM_TYPE