protected TransformResults Transform(CancellationToken cancellationToken, DataSchema dataSchema, TransformResults input,
TransformStack transformStack)
{
if (transformStack == null || transformStack.StackIndex >= transformStack.RowTransforms.Count)
{
return(input);
}
cancellationToken.ThrowIfCancellationRequested();
if (transformStack.Predecessor != null)
{
input = Transform(cancellationToken, dataSchema, input, transformStack.Predecessor);
}
var filter = transformStack.CurrentTransform as RowFilter;
if (filter != null)
{
var filteredRows = new PivotedRows(Filter(cancellationToken, dataSchema, filter, input.PivotedRows),
input.PivotedRows.ItemProperties);
filteredRows = Sort(cancellationToken, dataSchema, filter, filteredRows);
return(new TransformResults(input, filter, filteredRows));
}
var pivotSpec = transformStack.CurrentTransform as PivotSpec;
if (pivotSpec != null)
{
var pivotedRows = GroupAndTotaler.GroupAndTotal(cancellationToken, dataSchema, pivotSpec, input.PivotedRows);
return(new TransformResults(input, pivotSpec, pivotedRows));
}
return(input);
}
public void TransformStack_TranlateSaveRestore_Verify()
{
using (var context = new Eto.Wpf.Platform().Context)
{
var current = Matrix.Create();
var stack = new Stack <IMatrix>();
Action <IMatrix> push = m => {
stack.Push(current);
m.Append(current);
current = m;
};
Action pop = () => current = stack.Pop();
var target = new TransformStack(push, pop);
Assert.IsTrue(MatrixTests.Equals(current, 1f, 0f, 0f, 1f, 0f, 0f));
target.SaveTransform(); // Save
target.TranslateTransform(5f, 5f);
Assert.IsTrue(MatrixTests.Equals(current, 1f, 0f, 0f, 1f, 5f, 5f));
target.SaveTransform();
target.TranslateTransform(10f, 10f);
Assert.IsTrue(MatrixTests.Equals(current, 1f, 0f, 0f, 1f, 15f, 15f));
target.RestoreTransform();
Assert.IsTrue(MatrixTests.Equals(current, 1f, 0f, 0f, 1f, 5f, 5f));
target.RestoreTransform();
Assert.IsTrue(MatrixTests.Equals(current, 1f, 0f, 0f, 1f, 0f, 0f));
}
}
private ToolStripMenuItem MakeTransformStackMenuItem(DataSchema dataSchema, TransformStack transformStack)
{
var toolStripMenuItem = new ToolStripMenuItem();
if (transformStack.CurrentTransform == null)
{
toolStripMenuItem.Text = Resources.NavBar_MakeTransformStackMenuItem_No_Transforms;
}
else
{
toolStripMenuItem.Text = transformStack.CurrentTransform.Summary;
toolStripMenuItem.ToolTipText = transformStack.CurrentTransform.GetDescription(dataSchema);
if (transformStack.CurrentTransform is PivotSpec)
{
toolStripMenuItem.Image = Resources.Pivot;
}
else if (transformStack.CurrentTransform is RowFilter)
{
toolStripMenuItem.Image = Resources.Filter;
}
toolStripMenuItem.ImageTransparentColor = Color.Magenta;
}
toolStripMenuItem.Click += (sender, args) =>
{
BindingListSource.BindingListView.TransformStack = transformStack;
};
return(toolStripMenuItem);
}
public QueryParameters SetTransformStack(TransformStack value)
{
return(new QueryParameters(this)
{
TransformStack = value
});
}
public TransformResults GetPartialResults(TransformStack transformStack)
{
if (Parent == null)
{
return(this);
}
var parentResults = Parent.GetPartialResults(transformStack);
if (!ReferenceEquals(parentResults, Parent))
{
return(parentResults);
}
int transformIndex = Depth - 1;
if (transformIndex >= transformStack.RowTransforms.Count ||
!Equals(RowTransform, transformStack.RowTransforms[transformIndex]))
{
return(parentResults);
}
return(this);
}
internal TransformVolume(Volume root)
{
Root = root;
transformStack = Transform3.NewTransformStack();
}
public QueryParameters ChangeTransformStack(TransformStack value)
{
return(ChangeProp(ImClone(this), im => im.TransformStack = value));
}
public QueryParameters(ViewInfo viewInfo, TransformStack rowTransform, ListSortDescriptionCollection sortDescriptions)
{
ViewInfo = viewInfo;
TransformStack = rowTransform;
}
