public CreationViewModel(IPageHelper p) : base(p)
{
TopicIndex = 0;
//Set execute code when calling the create card command
//Resets input fields and creates card in model
CreateCard = new Command(execute: async() =>
{
try
{
string topic;
if (TopicIndex != 0)
{
topic = TopicNames[TopicIndex]; //Add to existing topic
}
else
{
topic = TopicName; //Add to new topic
}
model.AddNewCard(topic, question, answer, enableNewTopicNameInput);
//Clear fields
TopicName = "";
Question = "";
Answer = "";
//Ensures that last selected topic remains selected
TopicIndex = TopicNames.IndexOf(topic);
await p.MessagePopup("Card created", "Revision card has been created and added to topic " + topic);
}
catch (Exception ex)
{
await p.MessagePopup("Error occurred", "Error: " + ex.Message);
}
});
}
public ManageModifyCardViewModel(IPageHelper p, RevisionCardSQL revisionCard) : base(p)
{
TopicIndex = 0;
int originalTopicIndex = TopicNames.IndexOf(revisionCard.Topic);
TopicIndex = originalTopicIndex;
Question = revisionCard.Question;
Answer = revisionCard.Answer;
SaveChangesCommand = new Command(execute: async() =>
{
try
{
string topic;
if (TopicIndex != 0)
{
topic = TopicNames[TopicIndex]; //Change to existing topic
}
else
{
topic = TopicName; //Change to new topic
}
model.ModifyCard(revisionCard, topic, question, answer);
//Ensures that last selected topic remains selected
TopicIndex = TopicNames.IndexOf(topic);
await p.MessagePopup("Saved changes", "Changes to revision card have been saved.");
}
catch (Exception ex)
{
await p.MessagePopup("Error occurred", "Error: " + ex.Message);
}
});
}