private async Task UpdatePreviewAsync(string envName, string envFilePath, CancellationToken ct)
{
try {
ct.ThrowIfCancellationRequested();
string result;
try {
result = File.ReadAllText(envFilePath);
} catch (UnauthorizedAccessException ex) {
result = ex.Message;
} catch (ArgumentException ex) {
result = ex.Message;
} catch (FileNotFoundException ex) {
result = ex.Message;
} catch (IOException ex) {
result = ex.Message;
}
ct.ThrowIfCancellationRequested();
Dispatcher.Invoke(() => {
var p = new CondaEnvironmentPreview();
p.IsInProgress = false;
p.IsEnvFile = result != null;
p.IsNoEnvFile = result == null;
p.EnvFileContents = result ?? "";
CondaPreview = p;
});
} catch (OperationCanceledException) {
}
}
protected override void ResetProjectDependentProperties()
{
_suppressPreview = true;
SetAsCurrent = SetAsCurrent && SelectedProject != null;
EnvName = GetDefaultEnvName();
Packages = string.Empty;
SelectedEnvFilePath = SelectedProject?.EnvironmentYmlPath;
if (!string.IsNullOrEmpty(SelectedEnvFilePath))
{
IsPackages = false;
IsEnvFile = true;
}
else
{
IsPackages = true;
IsEnvFile = false;
}
CondaPreview = new CondaEnvironmentPreview();
_suppressPreview = false;
TriggerDelayedPreview();
}
private async Task UpdatePreviewAsync(string envName, PackageSpec[] specs, CancellationToken ct)
{
if (specs.Length == 0)
{
Dispatcher.Invoke(() => {
CondaPreview = new CondaEnvironmentPreview()
{
IsNoPackages = true
};
});
return;
}
try {
ct.ThrowIfCancellationRequested();
var result = await _condaMgr.PreviewCreateAsync(envName, specs, ct);
ct.ThrowIfCancellationRequested();
var preview = result?.Actions?.LinkPackages;
var msg = result?.Message;
Dispatcher.Invoke(() => {
var p = new CondaEnvironmentPreview();
if (preview != null)
{
foreach (var package in preview.MaybeEnumerate().OrderBy(pkg => pkg.Name))
{
p.Packages.Add(new CondaPackageView()
{
Name = package.Name.Trim(),
Version = package.VersionText,
});
}
}
if (result == null)
{
msg = Strings.AddCondaEnvironmentPreviewFailed;
}
p.HasPreviewError = !string.IsNullOrEmpty(msg);
p.ErrorMessage = msg;
p.IsInProgress = false;
p.IsPackages = p.Packages.Count > 0;
p.IsNoPackages = !p.IsPackages && !p.HasPreviewError;
CondaPreview = p;
});
} catch (OperationCanceledException) {
}
}
private void UpdatePreview()
{
if (_suppressPreview)
{
return;
}
if (_condaMgr == null)
{
return;
}
if (IsEnvFile && IsPackages)
{
// Temporary state while switching from one combo box to the other
// We'll get called again with only one of them set to true
return;
}
_updatePreviewCancelTokenSource?.Cancel();
_updatePreviewCancelTokenSource = new CancellationTokenSource();
// Clear the preview, display a progress icon/message
var p = new CondaEnvironmentPreview();
p.IsInProgress = true;
CondaPreview = p;
var envName = EnvName ?? string.Empty;
if (IsEnvFile)
{
var envFilePath = SelectedEnvFilePath ?? string.Empty;
Task.Run(() => UpdatePreviewAsync(envName, envFilePath, _updatePreviewCancelTokenSource.Token)).HandleAllExceptions(Site, typeof(AddCondaEnvironmentView)).DoNotWait();
}
else if (IsPackages)
{
var specs = PackagesSpecs.ToArray();
Task.Run(() => UpdatePreviewAsync(envName, specs, _updatePreviewCancelTokenSource.Token)).HandleAllExceptions(Site, typeof(AddCondaEnvironmentView)).DoNotWait();
}
}