public QueryExpression(QueryExpressionGroup parentGroup)
{
InitializeComponent();
ParentGroup = parentGroup;
Style = (Style)FindResource("FadeInStyle");
}
private void AddExpressionGroup(QueryExpressionGroup group = null, int atIndex = -1)
{
if (group == null)
{
group = new QueryExpressionGroup(Builder);
}
group.AddExpression();
if (group.NestedExpressions.Count == 1)
{
group.AddExpression();
}
group.Deleting += NestedGroupOnDeleting;
group.ConvertingToExpression += GroupOnConvertingToExpression;
group.ExpressionChanged += (sender, args) => ExpressionChanged?.Invoke(sender, args);
if (atIndex >= 0)
{
NestedExpressions.Insert(atIndex, group);
ExpressionStackPanel.Children.Insert(atIndex, group);
}
else
{
NestedExpressions.Add(group);
ExpressionStackPanel.Children.Add(group);
}
OnNestedExpressionsChanged();
}
/// <summary>
/// Converts an expression to a group
/// </summary>
private void ExpressionOnConvertToGroupClicked(object sender, EventArgs eventArgs)
{
try
{
// Get the expression that wants to convert
var expression = sender as QueryExpression;
if (expression == null)
{
return;
}
int index = NestedExpressions.IndexOf(expression);
RemoveExpression(expression);
expression.RemoveButton.IsEnabled = true;
var group = new QueryExpressionGroup(Builder);
group.AddExpression(expression);
AddExpressionGroup(group, index);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
private void InitializeRootExpressionGroup(bool withChild = true)
{
RootExpressionGroup = new QueryExpressionGroup(this, true);
if (withChild)
{
RootExpressionGroup.AddExpression();
}
RootExpressionGroup.ExpressionChanged += RootExpressionGroupOnExpressionChanged;
ExpressionStackPanel.Children.Add(RootExpressionGroup);
}
private void RemoveExpressionGroup(QueryExpressionGroup group)
{
group.RemoveHandlers();
group.NestedExpressions.Clear();
group.ExpressionStackPanel.Children.Clear();
NestedExpressions.Remove(group);
ExpressionStackPanel.Children.Remove(group);
OnNestedExpressionsChanged();
}
private QueryExpressionGroup AddSingleExpressionGroup(QueryExpressionGroup group = null)
{
if (group == null)
{
group = new QueryExpressionGroup(Builder);
}
group.Deleting += NestedGroupOnDeleting;
group.ConvertingToExpression += GroupOnConvertingToExpression;
group.ExpressionChanged += (sender, args) => ExpressionChanged?.Invoke(sender, args);
NestedExpressions.Add(group);
ExpressionStackPanel.Children.Add(group);
OnNestedExpressionsChanged();
return(group);
}
