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Nullabfrage hinzugefügt

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This commit is contained in:
Lyndon Jetten
2023-06-28 19:04:03 +02:00
parent 6ea4a47b98
commit c691dd281f
6 changed files with 88 additions and 72 deletions
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126
ChatController/ChatMainControl.xaml.cs
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@@ -319,7 +319,7 @@ namespace ChatController
_ContainingWindow.Activate();
var selectedContact = _ContactList?.FirstOrDefault(f => f?.Contact.GroupId == pGroupId);
if(!(selectedContact is null))
if(!(selectedContact?.Contact is null))
{
SelectContact(selectedContact.Contact);
}
@@ -374,83 +374,93 @@ namespace ChatController
return;
}
if(Clientlist?.SelectedItem is ContactDependencyObject selectedContactDependencyObject)
if(Clientlist?.SelectedItem is ContactDependencyObject selectedContactDependencyObject && !(selectedContactDependencyObject.Contact is null))
{
SelectContact(selectedContactDependencyObject.Contact);
}
}
// ToDo: Hier kommt es immer wieder zu einer NullPointerException
private void SelectContact(Contact contact)
{
if(contact is null)
try
{
return;
}
ChatMessageFileWrapper = null;
ShouldInterruptContactsThread = true;
StartWaitingImmediately();
_ScrollPrueferAktivieren = false;
if(contact.HasUnreadMessages)
{
contact.HasUnreadMessages = false;
Clientlist.Items.Refresh();
OnPropertyChanged(nameof(ContactList));
}
var currentContact = contact;
contact.IsNewMessage = false;
var shouldChangeIcon = _ContactList.Any(contactDependencyObject => contactDependencyObject.Contact.IsNewMessage);
if(shouldChangeIcon)
{
ContainingWindow.Icon = Utils.ConvertIconToImageSource(Resource.ownchat_favicon);
}
CurrentContact = currentContact;
OnPropertyChanged(nameof(IsSendButtonEnabled));
foreach(ContactDependencyObject item in Clientlist.Items)
{
if(item.Contact.Equals(contact))
if(contact is null)
{
Clientlist.SelectedItem = item;
return;
}
}
_ChatMessages.Clear();
OnPropertyChanged(nameof(_ChatMessages));
ChatMessageFileWrapper = null;
Chat.LoadChatMessagesForContactAsync(currentContact, GetFirstMessage(), chatMessages =>
{
this.Dispatch(() =>
ShouldInterruptContactsThread = true;
// Zeigt die Warteanimation (das Rädchen)
StartWaitingImmediately();
_ScrollPrueferAktivieren = false;
if(contact.HasUnreadMessages)
{
_ChatMessages.Clear();
_ChatMessages.AddRangeIfElementsNotIn(chatMessages);
OnPropertyChanged(nameof(_ChatMessages));
contact.HasUnreadMessages = false;
WpfUtils.ScrollToBottomOfListBox(ChatListBox);
Clientlist?.Items.Refresh();
OnPropertyChanged(nameof(ContactList));
}
ChatListBox.ContextMenu = Chat.ErstelleKontextMenue();
SetContextHandler();
_ScrollPrueferAktivieren = true;
var currentContact = contact;
ListenForMessages();
Cursor = Cursors.Arrow;
contact.IsNewMessage = false;
WriteToNewSyncFile();
var shouldChangeIcon = _ContactList.Any(contactDependencyObject => contactDependencyObject.Contact.IsNewMessage);
if(shouldChangeIcon)
{
ContainingWindow.Icon = Utils.ConvertIconToImageSource(Resource.ownchat_favicon);
}
ShouldInterruptContactsThread = false;
CurrentContact = currentContact;
EndWaiting();
OnPropertyChanged(nameof(IsSendButtonEnabled));
foreach(ContactDependencyObject item in Clientlist.Items)
{
if(item.Contact.Equals(contact))
{
Clientlist.SelectedItem = item;
}
}
_ChatMessages.Clear();
OnPropertyChanged(nameof(_ChatMessages));
Chat.LoadChatMessagesForContactAsync(currentContact, GetFirstMessage(), chatMessages =>
{
this.Dispatch(() =>
{
_ChatMessages.Clear();
_ChatMessages.AddRangeIfElementsNotIn(chatMessages);
OnPropertyChanged(nameof(_ChatMessages));
WpfUtils.ScrollToBottomOfListBox(ChatListBox);
ChatListBox.ContextMenu = Chat.ErstelleKontextMenue();
SetContextHandler();
_ScrollPrueferAktivieren = true;
ListenForMessages();
Cursor = Cursors.Arrow;
WriteToNewSyncFile();
ShouldInterruptContactsThread = false;
EndWaiting();
});
});
});
}
catch(Exception exception)
{
throw;
}
}
private void SetContextHandler()