public void MoveUp(IDataReplacer replacer)
{
if (replacer == null)
{
return;
}
var prev2 = GetPrevious(replacer);
var prev1 = GetPrevious(prev2);
var next = replacer.NextReplacer;
if (prev2 != null)
{
prev2.NextReplacer = next;
replacer.NextReplacer = prev2;
if (prev1 != null)
{
prev1.NextReplacer = replacer;
}
if (Root == prev2)
{
Root = replacer;
}
}
}
public void MoveDown(IDataReplacer replacer)
{
if (replacer == null)
{
return;
}
var next1 = replacer.NextReplacer;
var next2 = next1?.NextReplacer ?? null;
var prev = GetPrevious(replacer);
replacer.NextReplacer = next2;
if (next1 != null)
{
next1.NextReplacer = replacer;
if (Root == replacer)
{
Root = next1;
}
if (prev != null)
{
prev.NextReplacer = next1;
}
}
}
public void Test_Add()
{
var mockReplacer1 = new Mock <IDataReplacer>();
var mockReplacer2 = new Mock <IDataReplacer>();
IDataReplacer next1 = null, next2 = null;
mockReplacer1.SetupSet(x => x.NextReplacer = It.IsAny <IDataReplacer>()).Callback <IDataReplacer>(value => next1 = value);
mockReplacer1.SetupGet(x => x.NextReplacer).Returns(() => { return(next1); });
mockReplacer2.SetupSet(x => x.NextReplacer = It.IsAny <IDataReplacer>()).Callback <IDataReplacer>(value => next2 = value);
mockReplacer2.SetupGet(x => x.NextReplacer).Returns(() => { return(next2); });
var chain = new ReplacerChain();
chain.Add(mockReplacer1.Object);
Assert.Equal(mockReplacer1.Object, chain.Root);
Assert.Null(next1);
Assert.Null(next2);
chain.Add(mockReplacer2.Object);
Assert.Equal(mockReplacer1.Object, chain.Root);
Assert.Equal(mockReplacer2.Object, next1);
Assert.Null(next2);
}
private void SelectReplacer(IDataReplacer replacer)
{
var row = gridReplacers.Rows
.Cast <DataGridViewRow>()
.Where(x => ((ReplacerItem)x.DataBoundItem).Replacer == replacer)
.FirstOrDefault();
gridReplacers.ClearSelection();
if (row != null)
{
row.Selected = true;
gridReplacers.CurrentCell = row.Cells[0];
}
}
public void Add(IDataReplacer replacer)
{
if (replacer == null)
{
return;
}
var last = Last;
if (last != null)
{
last.NextReplacer = replacer;
}
else
{
Root = replacer;
}
}
public IDataReplacer GetPrevious(IDataReplacer replacer)
{
var current = Root;
if (current == null || replacer == null)
{
return(null);
}
while (current != null)
{
if (current.NextReplacer == replacer)
{
return(current);
}
current = current.NextReplacer;
}
return(null);
}
public void Remove(IDataReplacer replacer)
{
if (replacer == null)
{
return;
}
var next = replacer.NextReplacer;
replacer.NextReplacer = null;
var prev = GetPrevious(replacer);
if (prev != null)
{
prev.NextReplacer = next;
}
else
{
Root = next;
}
}
public IDataReplacer GetNext(IDataReplacer replacer)
{
return(replacer?.NextReplacer ?? null);
}
