public void EndApplyChanges(CancelRoutedEventArgs bargs)
{
if (bargs.Cancel)
{
return;
}
if (bargs.Skip)
{
if (bargs.CloseDialog)
{
this.Close();
}
return;
}
// Update final content, if it is null it means it's already been updated
if (this.TargetContent != null && this._bindings != null)
{
foreach (BEData bdata in _bindings)
{
// Get current val
object val = bdata.Obj.GetValue(bdata.Prp);
object datacontext = (bdata.Obj as FrameworkElement).DataContext;
// Change the data context
(bdata.Obj as FrameworkElement).DataContext = this.TargetContent;
// Set the value back to the textbox, and update the permanent source
bdata.Obj.SetValue(bdata.Prp, val);
bdata.Exp.UpdateSource();
// Restore the temp. content
(bdata.Obj as FrameworkElement).ClearValue(FrameworkElement.DataContextProperty);
}
}
// Raise the post-apply event, this is for validations and persistence
CancelRoutedEventArgs aargs = new CancelRoutedEventArgs();
aargs.RoutedEvent = AppliedChangesEvent;
aargs.Source = this;
aargs.CloseDialog = bargs.CloseDialog;
OnAppliedChanges(aargs);
// Close the dialog if necessary
if (bargs.CloseDialog && !aargs.Cancel)
{
this.Close();
}
}
public void EndApplyChanges(CancelRoutedEventArgs bargs)
{
if (bargs.Cancel)
{
return;
}
if (bargs.Skip)
{
if (bargs.CloseDialog)
{
this.Close();
}
return;
}
// Update final content, if it is null it means it's already been updated
if (this.TargetContent != null && this._bindings != null)
{
// If target is a list, apply changes to all of them
IEnumerable targetItems;
if (this.TargetContent is IEnumerable)
{
targetItems = this.TargetContent as IEnumerable;
}
else
{
targetItems = new object[] { this.TargetContent }
};
ApplyBindingsToItems(targetItems);
}
// Raise the post-apply event, this is for validations and persistence
CancelRoutedEventArgs aargs = new CancelRoutedEventArgs();
aargs.RoutedEvent = AppliedChangesEvent;
aargs.Source = this;
aargs.CloseDialog = bargs.CloseDialog;
OnAppliedChanges(aargs);
// Close the dialog if necessary
if (bargs.CloseDialog && !aargs.Cancel)
{
this.Close();
}
}
/// <summary>
///
/// </summary>
public bool Close()
{
// Raise the confirmation event
CancelRoutedEventArgs args = new CancelRoutedEventArgs();
args.RoutedEvent = ClosingEvent;
args.Source = this;
OnClosing(args);
if (args.Cancel)
{
return(false);
}
// Don't mark as changed while applying changes
this.Content = null;
SetValue(TargetContentProperty, null);
IsOpen = false;
return(true);
}
/// <summary>
///
/// </summary>
protected static void Dialog_AppliedChanges <RowType>(FloatingDialog dialog, string editingDialogTitle, ListView hostListView, int minPosition, CancelRoutedEventArgs e)
where RowType : DataRow
{
// All went well, so just accept changes
RowType finalRow = dialog.TargetContent as RowType;
DataRowState state = finalRow.RowState;
finalRow.Table.AcceptChanges();
(dialog.Content as RowType).AcceptChanges();
// Add to the table
if (state == DataRowState.Added)
{
ObservableCollection <DataRow> items = hostListView.ItemsSource as ObservableCollection <DataRow>;
// -2 because we already added the row to the table. We want the position of the last available
int newIndex = finalRow.Table.Rows.Count > 1 ?
items.IndexOf(finalRow.Table.Rows[finalRow.Table.Rows.Count - 2]) + 1 :
minPosition;
if (newIndex >= 0)
{
// Insert a new row to the items only if a new position has been found
items.Insert(newIndex, finalRow);
hostListView.SelectedIndex = newIndex;
hostListView.ScrollIntoView(finalRow);
}
}
if (finalRow is IPropertyChangeNotifier)
{
(finalRow as IPropertyChangeNotifier).OnAllPropertiesChanged();
}
dialog.Title = editingDialogTitle;
}
/// <summary>
///
/// </summary>
protected static void Dialog_AppliedChanges <RowType>(FloatingDialog dialog, string editingDialogTitle, ListView hostListView, CancelRoutedEventArgs e)
where RowType : DataRow
{
Dialog_AppliedChanges <RowType>(dialog, editingDialogTitle, hostListView, 0, e);
}
/// <summary>
///
/// </summary>
/// <param name="async">When true, runs the specified server method in a seperate thread.</param>
/// <param name="postApplying">
/// If specified, this function is called after applying is complete. It is the
/// function's responsibility to call FloatingDialog.EndApplyChanges() in order to complete the apply cycle.
/// </param>
protected static void Dialog_ApplyingChanges <TableType, RowType>(TableType sourceTable, FloatingDialog dialog, MethodInfo saveMethod, CancelRoutedEventArgs e, object[] additionalArgs, bool async, Action postApplying)
where TableType : DataTable, new()
where RowType : DataRow
{
RowType editVersion = dialog.Content as RowType;
DataTable changes = editVersion.Table.GetChanges();
// No changes were made, skip the apply (but don't cancel)
if (changes == null)
{
e.Skip = true;
if (postApplying != null)
{
postApplying();
}
else
{
dialog.EndApplyChanges(e);
}
return;
}
// Remember data state
DataRowState state = changes.Rows[0].RowState;
// Will store updated data
TableType savedVersion = null;
object[] actualArgs = additionalArgs != null? new object[additionalArgs.Length + 1] : new object[1];
actualArgs[0] = Oltp.Prepare <TableType>(changes);
if (additionalArgs != null)
{
additionalArgs.CopyTo(actualArgs, 1);
}
// Save the changes to the DB
Delegate[] delegates = new Delegate[] {
(Action) delegate()
{
using (OltpProxy proxy = new OltpProxy())
{
savedVersion = (TableType)saveMethod.Invoke(proxy.Service, actualArgs);
}
},
(Func <Exception, bool>) delegate(Exception ex)
{
// Failed, so cancel and display a message
MessageBoxError("Error while updating.", ex);
e.Cancel = true;
return(false);
},
(Action) delegate()
{
// Special case when adding a new row
if (state == DataRowState.Added)
{
// Import the saved row
sourceTable.ImportRow(savedVersion.Rows[0]);
// Even though nothing needs to be updated, mark it as added so AppliedChanges handled treats it properly
RowType newRow = sourceTable.Rows[sourceTable.Rows.Count - 1] as RowType;
newRow.SetAdded();
// Set as new target content
dialog.TargetContent = newRow;
dialog.Content = Dialog_MakeEditVersion <TableType, RowType>(sourceTable, newRow);
}
// Activate the post applying action
if (postApplying != null)
{
postApplying();
}
else
{
dialog.EndApplyChanges(e);
}
}
};
if (async)
{
App.CurrentPage.Window.AsyncOperation(delegates[0] as Action, delegates[1] as Func <Exception, bool>, delegates[2] as Action);
}
else
{
bool exception = false;
try { (delegates[0] as Action).Invoke(); }
catch (Exception ex) { (delegates[1] as Func <Exception, bool>).Invoke(ex); exception = true; }
if (!exception)
{
(delegates[2] as Action).Invoke();
}
if (postApplying != null)
{
postApplying();
}
else
{
dialog.EndApplyChanges(e);
}
}
}
protected static void Dialog_ApplyingChanges <TableType, RowType>(TableType sourceTable, FloatingDialog dialog, MethodInfo saveMethod, CancelRoutedEventArgs e, object[] additionalArgs)
where TableType : DataTable, new()
where RowType : DataRow
{
Dialog_ApplyingChanges <TableType, RowType>(sourceTable, dialog, saveMethod, e, additionalArgs, false, null);
}
/// <summary>
///
/// </summary>
/// <param name="async">When true, runs the specified server method in a seperate thread.</param>
/// <param name="postApplying">
/// If specified, this function is called after applying is complete. It is the
/// function's responsibility to call FloatingDialog.EndApplyChanges() in order to complete the apply cycle.
/// </param>
protected static void Dialog_ApplyingChanges <TableT, RowT>
(
TableT sourceTable,
FloatingDialog dialog,
MethodInfo saveMethod,
CancelRoutedEventArgs e,
object[] additionalArgs,
bool async,
Action postApplying
)
where TableT : DataTable, new()
where RowT : DataRow
{
RowT controlRow = dialog.Content as RowT;
DataTable changes = controlRow.Table.GetChanges();
// No changes were made, skip the apply (but don't cancel)
if (changes == null)
{
e.Skip = true;
if (postApplying != null)
{
postApplying();
}
else
{
dialog.EndApplyChanges(e);
}
return;
}
if (dialog.IsBatch)
{
// Copy all target rows and apply the changed values to them
TableT clonedTargetTable = new TableT();
foreach (RowT row in (IEnumerable)dialog.TargetContent)
{
clonedTargetTable.ImportRow(row);
}
clonedTargetTable.AcceptChanges();
dialog.ApplyBindingsToItems(clonedTargetTable.Rows);
// Get these changes
changes = clonedTargetTable.GetChanges();
}
// No changes were made, skip the apply (but don't cancel)
if (changes == null)
{
e.Skip = true;
if (postApplying != null)
{
postApplying();
}
else
{
dialog.EndApplyChanges(e);
}
return;
}
// Remember data state
DataRowState state = controlRow.RowState;
// Will store updated data
TableT savedVersion = null;
// Create a typed version of the changes
object[] actualArgs = additionalArgs != null? new object[additionalArgs.Length + 1] : new object[1];
actualArgs[0] = Oltp.Prepare <TableT>(changes);
if (additionalArgs != null)
{
additionalArgs.CopyTo(actualArgs, 1);
}
// Save the changes to the DB
Delegate[] delegates = new Delegate[] {
(Action) delegate()
{
using (OltpProxy proxy = new OltpProxy())
{
savedVersion = (TableT)saveMethod.Invoke(proxy.Service, actualArgs);
}
},
(Func <Exception, bool>) delegate(Exception ex)
{
// Failed, so cancel and display a message
MainWindow.MessageBoxError("Error while updating.\n\nChanges may have been saved, if re-saving doesn't work please refresh the page.", ex);
e.Cancel = true;
return(false);
},
(Action) delegate()
{
// Special case when adding a new row
if (!dialog.IsBatch && state == DataRowState.Added)
{
// Import the saved row
sourceTable.ImportRow(savedVersion.Rows[0]);
// Even though nothing needs to be updated, mark it as added so AppliedChanges handled treats it properly
RowT newRow = sourceTable.Rows[sourceTable.Rows.Count - 1] as RowT;
newRow.SetAdded();
// Set as new target content
dialog.TargetContent = newRow;
dialog.Content = Dialog_MakeEditVersion <TableT, RowT>(newRow);
}
// Activate the post applying action
if (postApplying != null)
{
postApplying();
}
else
{
dialog.EndApplyChanges(e);
}
}
};
if (async)
{
App.CurrentPage.Window.AsyncOperation(
delegates[0] as Action, // out-of-ui action
delegates[1] as Func <Exception, bool>, // exception handler
delegates[2] as Action // in-ui action
);
}
else
{
bool exception = false;
try
{
// out-of-ui action, done in ui because async is not required
(delegates[0] as Action).Invoke();
}
catch (Exception ex)
{
// exception handler
(delegates[1] as Func <Exception, bool>).Invoke(ex);
exception = true;
}
// in-ui action
if (!exception)
{
(delegates[2] as Action).Invoke();
}
if (postApplying != null)
{
postApplying();
}
else
{
dialog.EndApplyChanges(e);
}
}
}
protected static void Dialog_ApplyingChanges <TableT, RowT>(TableT sourceTable, FloatingDialog dialog, MethodInfo saveMethod, CancelRoutedEventArgs e)
where TableT : DataTable, new()
where RowT : DataRow
{
Dialog_ApplyingChanges <TableT, RowT>(sourceTable, dialog, saveMethod, e, null, false, null);
}
/// <summary>
///
/// </summary>
public void StartApplyChanges(bool closeDialog)
{
if (!this.IsOpen)
{
throw new InvalidOperationException("Dialog is not open");
}
// Update source because the binding might not have been activated, so change focus to trigger it
this.Focus();
// Validations
List <string> errors = new List <string>();
if (_bindings != null)
{
foreach (BEData bdata in _bindings)
{
if (bdata.Exp.HasError)
{
errors.Add(bdata.Exp.ValidationError.ErrorContent as string);
}
else if (bdata.Exp.ParentBinding.ValidationRules.Count > 0)
{
foreach (ValidationRule rule in bdata.Exp.ParentBinding.ValidationRules)
{
// Validate the binding again (just in case)
ValidationResult result = rule.Validate(bdata.Obj.GetValue(bdata.Prp), null);
if (!result.IsValid)
{
errors.Add(result.ErrorContent as string);
// Trigger a validation error
bdata.Exp.UpdateSource();
break;
}
}
}
}
}
// Fail on any validation error
if (errors.Count > 0)
{
string output = string.Empty;
foreach (string error in errors)
{
if (!string.IsNullOrEmpty(error))
{
output += error + "\n";
}
}
MessageBox.Show(output, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
// Raise the before event, this puts the DataRow in edit mode
CancelRoutedEventArgs bargs = new CancelRoutedEventArgs();
bargs.RoutedEvent = ApplyingChangesEvent;
bargs.CloseDialog = closeDialog;
bargs.Source = this;
OnApplyingChanges(bargs);
}
