/// <summary>
/// Déclenche l'événement IsBusyChanged
/// </summary>
protected override void OnIsBusyChanged()
{
base.OnIsBusyChanged();
// Refresh commands
SearchCommand.RaiseCanExecuteChanged();
}
public string this[string columnName]
{
get
{
var bulderError = new StringBuilder();
if (columnName == "OriginalSelectValue" && OriginalSelectValue == null)
{
bulderError.AppendLine("Нужно указать город отправления.");
}
else if (columnName == "DestinationSelectValue" && DestinationSelectValue == null)
{
bulderError.AppendLine("Нужно указать город прибытия.");
}
else if (columnName == "DestinationSelectValue" && DestinationSelectValue == OriginalSelectValue)
{
bulderError.AppendLine("Город прибытия не может совпадать с городом отправления");
}
else if (columnName == "DepartDate" && !DepartDate.HasValue)
{
bulderError.AppendLine("Выбирите дату");
}
else if (columnName == "ReturnDate" && !ReturnDate.HasValue)
{
bulderError.AppendLine("Выбирите дату");
}
Error = bulderError.ToString();
SearchCommand.RaiseCanExecuteChanged();
return(Error);
}
}
private void SearchModel_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
switch (e.PropertyName)
{
case "ZoekBestand":
if (ZoekBestand)
{
FolderPath = "";
}
break;
case "ZoekMap":
if (ZoekMap)
{
FilePath = "";
}
break;
case "SearchTerm":
case "FolderPath":
case "FilePath":
SearchCommand.RaiseCanExecuteChanged();
break;
}
}
private async Task <ImageResponse> SearchUpdateImages(string text, CancellationToken cancellationToken)
{
var imageResponce = await GetImagesAsync(text, cancellationToken);
// _images.Clear();
_nextUrl = imageResponce.Return(x => x.NextUrl, null);
if (_nextUrl == null && _lastInstagramImageId == imageResponce.MinTagId)
{
SearchCommand.RaiseCanExecuteChanged();
await Task.FromResult(imageResponce);
}
_lastInstagramImageId = imageResponce.MinTagId;
foreach (var image in imageResponce.Return(x => x.Images, Enumerable.Empty <WebBrowsing.Image>()))
{
InstagramImageViewModel viewModel = new InstagramImageViewModel(image.Data,
image.Width, image.Height, image.Url, image.FullName, image.ProfilePictureData, image.UrlAvatar, image.UserName);
_images.Add(viewModel);
}
SearchCommand.RaiseCanExecuteChanged();
cancellationToken.ThrowIfCancellationRequested();
return(await Task.FromResult(imageResponce));
}
protected virtual void OnSearchCommandHandler()
{
IsSearching = true;
SearchCommand.RaiseCanExecuteChanged();
IsMessageVisible = false;
}
private void OnModelPropertyChanged(object sender, PropertyChangedEventArgs e)
{
SearchCommand.RaiseCanExecuteChanged();
AddCommand.RaiseCanExecuteChanged();
DeleteCommand.RaiseCanExecuteChanged();
SaveCommand.RaiseCanExecuteChanged();
CancelCommand.RaiseCanExecuteChanged();
}
protected virtual void RaiseAllCanExecuteChanged()
{
SearchCommand.RaiseCanExecuteChanged();
AddCommand.RaiseCanExecuteChanged();
DeleteCommand.RaiseCanExecuteChanged();
SaveCommand.RaiseCanExecuteChanged();
CancelCommand.RaiseCanExecuteChanged();
}
private void RaiseCanExecuteCommands()
{
NextMonthCommand.RaiseCanExecuteChanged();
PreviousMonthCommand.RaiseCanExecuteChanged();
RemoveUserCommand.RaiseCanExecuteChanged();
CurrentMonthCommand.RaiseCanExecuteChanged();
SearchCommand.RaiseCanExecuteChanged();
ClearAllCommand.RaiseCanExecuteChanged();
PrintCommand.RaiseCanExecuteChanged();
}
public override void AfterItemPermissionsCompleted()
{
base.AfterItemPermissionsCompleted();
NewCommand.RaiseCanExecuteChanged();
EditCommand.RaiseCanExecuteChanged();
SaveCommand.RaiseCanExecuteChanged();
SearchCommand.RaiseCanExecuteChanged();
DeleteCommand.RaiseCanExecuteChanged();
PrintCommand.RaiseCanExecuteChanged();
CancelCommand.RaiseCanExecuteChanged();
ExportCommand.RaiseCanExecuteChanged();
}
/// <summary>
/// Déclenche l'événement <see cref="CriteriaErrorsChanged"/> si une propiété de <see cref="Criteria"/> contient une erreur
/// </summary>
protected virtual void OnCriteriaErrorsChanged(object sender, DataErrorsChangedEventArgs e)
{
CriteriaErrorsChanged?.Invoke(sender, e);
if (sender != null && e != null)
{
OnErrorsChanged(sender, e.PropertyName);
}
// Refresh commands
SearchCommand.RaiseCanExecuteChanged();
}
protected virtual async Task OnSearchResultHandler(SearchResultMessage message)
{
if (message.IsFinished)
{
IsSearching = false;
SearchCommand.RaiseCanExecuteChanged();
}
else
{
Message = message.Message;
IsMessageVisible = !String.IsNullOrEmpty(message.Message);
}
await Task.Yield();
}
private void UpdateSelectedMonth(MonthViewModel monthViewModel)
{
MonthViewModel viewModel;
bool exist = _searchQuery.SelectedMonths.TryGetValue(monthViewModel.Number, out viewModel);
if (monthViewModel.IsChecked && !exist)
{
_searchQuery.SelectedMonths.Add(monthViewModel.Number, monthViewModel);
}
else if (exist)
{
_searchQuery.SelectedMonths.Remove(viewModel.Number);
}
SearchCommand.RaiseCanExecuteChanged();
}
private void Search(string text)
{
if (!string.IsNullOrEmpty(_previousSearch))
{
if (string.Compare(text, _previousSearch, StringComparison.OrdinalIgnoreCase) != 0)
{
_nextUrl = null;
Images.Clear();
}
}
_previousSearch = text;
SearchCommand.RaiseCanExecuteChanged();
_searchTokenSource.Cancel();
_searchTokenSource = new CancellationTokenSource();
SearchAsyncOperation = new NotifyTaskCompletion <ImageResponse>(SearchUpdateImages(text, _searchTokenSource.Token));
}
private void SetIsBusy(bool isBusy)
{
_isBusy = isBusy;
SearchCommand.RaiseCanExecuteChanged();
CustomSearchCommand.RaiseCanExecuteChanged();
}
private void UpdateCommands()
{
GoBackCommand.RaiseCanExecuteChanged();
SearchCommand.RaiseCanExecuteChanged();
}
