public Control Navigate(IKeyReader reader, IField field, IFieldPrinter printer)
{
field.FieldCells[field.ActiveIndex].Active = true;
int indexX = field.FieldCells[field.ActiveIndex].PositionX;
int indexY = field.FieldCells[field.ActiveIndex].PositionY;
printer.Print();
while (true)
{
Destination destination = reader.GetDestination();
if (destination == Destination.MoveDown)
{
if (indexY < Settings.FieldSize - 1)
{
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = false;
previousCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
indexY++;
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = true;
currentCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
}
}
if (destination == Destination.MoveUp)
{
if (indexY > 0)
{
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = false;
previousCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
indexY--;
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = true;
currentCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
}
}
if (destination == Destination.MoveRight)
{
if (indexX < Settings.FieldSize - 1)
{
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = false;
previousCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
indexX++;
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = true;
currentCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
}
}
if (destination == Destination.MoveLeft)
{
if (indexX > 0)
{
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = false;
previousCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
indexX--;
field.FieldCells[indexY * Settings.FieldSize + indexX].Active = true;
currentCell = field.FieldCells[indexY * Settings.FieldSize + indexX];
}
}
if (destination == Destination.Esc)
{
return(Control.Exit);
}
if (destination == Destination.Select)
{
field.ActiveIndex = indexY * Settings.FieldSize + indexX;
return(Control.Open);
}
if (destination == Destination.Flag)
{
field.ActiveIndex = indexY * Settings.FieldSize + indexX;
field.FieldCells[field.ActiveIndex].Flagged = field.FieldCells[field.ActiveIndex].Flagged == false;
return(Control.Flag);
}
printer.Print(currentCell, previousCell);
}
}
//Navigate by list of items. Returns selected item or null if selected other action
public IListable Navigate(IList <IListable> recipes, out Action action, bool selectable)
{
List <IListable> sortedList = (List <IListable>)recipes;
sortedList.Sort();
int index = 0;
if (recipes.Count != 0)
{
recipes[index].Active = true;
_printer.ShowItems(recipes, selectable);
while (true)
{
Destination destination = _keyReader.GetDestination();
if (destination == Destination.MoveDown)
{
index++;
if (index < recipes.Count)
{
recipes[index].Active = true;
if (index > 0)
{
recipes[index - 1].Active = false;
}
}
else
{
recipes[index - 1].Active = false;
index = 0;
recipes[index].Active = true;
}
}
else if (destination == Destination.MoveUp)
{
index--;
if (index >= 0)
{
recipes[index].Active = true;
if (index < recipes.Count)
{
recipes[index + 1].Active = false;
}
}
else
{
recipes[index + 1].Active = false;
index = recipes.Count - 1;
recipes[index].Active = true;
}
}
else if (destination == Destination.Select)
{
recipes[index].Active = false;
action = Action.Select;
return(recipes[index]);
}
else if (destination == Destination.Mark && selectable)
{
recipes[index].Selected = recipes[index].Selected != true;
action = Action.Select;
}
else if (destination == Destination.Esc)
{
recipes[index].Active = false;
action = Action.Esc;
return(null);
}
else if (destination == Destination.Create)
{
recipes[index].Active = false;
action = Action.Create;
return(null);
}
_printer.ShowItems(recipes, selectable);
}
}
action = Action.None;
return(null);
}
//For Category tree and ICategory related types navigate and display
public ICategory Navigate(IList <T> tree, IKeyReader reader, ITreePrinter <T> printer,
bool autoExpandChildren)
{
List <T> sortedTree = (List <T>)tree;
sortedTree.Sort((x, y) => x.Id - y.Id);
T currentCategory = tree[0];
var neighbors = tree.Where(x => x.ParentId == currentCategory.Id).ToArray();
int parentId = 0;
int horizontal = 0;
sortedTree[0].Active = true; //Highlight root category
currentCategory.Visible = true;
printer.PrintTree(sortedTree);
while (true)
{
Destination destination = reader.GetDestination();
if (destination == Destination.MoveDown)
{
if (currentCategory.ParentId == 0) // if top category move down opens childs
{
foreach (var id in neighbors)
{
sortedTree[id.Id - 1].Visible = true; //all Id in sorted list == index + 1
}
parentId = currentCategory.ParentId;
}
else
{
SwitchCategory(false, currentCategory, sortedTree, autoExpandChildren);
if (parentId != 0 && neighbors.Length > horizontal + 1) //can we move down?
{
horizontal++;
currentCategory = neighbors[horizontal];
}
}
}
else if (destination == Destination.MoveUp)
{
SwitchCategory(false, currentCategory, sortedTree, autoExpandChildren);
if (0 <= horizontal - 1)
{
horizontal--;
if (parentId != 0)
{
currentCategory = neighbors[horizontal];
}
}
}
else if (destination == Destination.MoveRight)
{
SwitchCategory(false, currentCategory, sortedTree, autoExpandChildren);
var children = tree.Where(x => x.ParentId == currentCategory.Id).ToArray();
if (children.Length != 0)
{
horizontal = 0;
parentId = currentCategory.Id;
currentCategory = children[horizontal];
neighbors = tree.Where(x => x.ParentId == parentId).ToArray();
foreach (var id in neighbors)
{
sortedTree[id.Id - 1].Visible = true;
}
}
}
else if (destination == Destination.MoveLeft)
{
if (currentCategory.ParentId != 0)
{
SwitchCategory(false, currentCategory, sortedTree, autoExpandChildren);
if (parentId != 0)
{
foreach (var id in neighbors)
{
sortedTree[id.Id - 1].Visible = false;
}
currentCategory = sortedTree[currentCategory.ParentId - 1];
}
parentId = currentCategory.ParentId;
neighbors = tree.Where(x => x.ParentId == parentId).ToArray();
if (parentId != 0)
{
horizontal = Array.IndexOf(neighbors, currentCategory);
}
}
}
else if (destination == Destination.Select)
{
ResetActive(tree, currentCategory);
return(currentCategory);
}
else if (destination == Destination.Esc)
{
ResetActive(sortedTree, currentCategory);
HideAllCategories(sortedTree);
printer.ClearView(sortedTree);
return(null);
}
SwitchCategory(true, currentCategory, sortedTree, autoExpandChildren);
printer.ClearView(sortedTree);
printer.PrintTree(sortedTree);
}
}
