public ConversationsPageViewModel(INavigation navigation, ConversationsPage conversationPage)
{
this.navigation = navigation;
this.masterDetailPage = conversationPage;
Conversations = BackupConversations = App.ConversationManager?.Conversations;
AddContactCommand = new Command(async() => await OnContactAdded());
}
async Task OnContactAdded()
{
var contactsPage = new ContactsPage();
contactsPage.NewConversationRequest += async(selectedContacts) =>
{
if (App.ConversationManager.FindConversation(selectedContacts) != null)
{
await ConversationsPage.PushConversation(
App.ConversationManager.StartConversation(selectedContacts),
this.masterDetailPage.Parent as MasterDetailPage);
return;
}
var editPageContext = new EditPageViewModel
{
DefaultText = "Enter Topic Name..."
};
editPageContext.EditFinished += async(sender, e) =>
{
var topicName = string.IsNullOrEmpty(e) ? "New Topic" : e;
await this.navigation.PopModalAsync(true);
await ConversationsPage.PushConversation(
App.ConversationManager.StartConversation(selectedContacts),
this.masterDetailPage.Parent as MasterDetailPage,
topicName);
};
await this.navigation.PushModalAsync(new EditPage
{
BindingContext = editPageContext
}, true);
};
await this.navigation.PushModalAsync(new NavigationPage(contactsPage)
{
BarBackgroundColor = (Color)Application.Current.Resources["primaryBlue"],
BarTextColor = Color.White
});
}