public SearchItem(string iconName, string title, string toolTip, ICatTreeViewItem item)
{
IconName = iconName;
Title = title;
ToolTip = toolTip;
Item = item;
}
public CatTreeViewItemDoppedEventArgs(object data, ICatTreeViewItem dest, bool aboveDest, bool copy)
{
Data = data;
Dest = dest;
AboveDest = aboveDest;
Copy = copy;
}
public override void GroupCreate(ICatTreeViewItem root)
{
if (!GetNewName(false, string.Empty, out var newName,
root, ValidateNewGroupName, CategoryToIconName(Category)))
{
return;
}
ModelGroupCreate(root, newName);
}
public override void ItemRename(ICatTreeViewItem item)
{
if (!GetNewName(true, GetTitle(item), out var newName,
item, ValidateNewItemName, CategoryToIconName(Category)))
{
return;
}
try {
ModelItemRename(item, newName);
OnAfterItemRename(item, EventArgs.Empty);
}
catch (Exception ex) {
ErrorDialog.Show(ex);
}
}
public override void ItemCreate(ICatTreeViewItem root)
{
if (!GetNewName(true, string.Empty, out var newName,
root, ValidateNewItemName, CategoryToIconName(Category)))
{
return;
}
try {
root.IsExpanded = true;
var item = ModelItemCreate(root, newName);
OnAfterItemCreate(item, EventArgs.Empty);
}
catch (Exception ex) {
ErrorDialog.Show(ex);
}
}
public static bool CanDrop(ICatTreeViewItem src, ICatTreeViewItem dest)
{
if (src == null || dest == null || Equals(src, dest) ||
src.Parent.Equals(dest) || dest.Parent?.Equals(src) == true ||
(src is ICatTreeViewGroup && dest is not ICatTreeViewGroup))
{
return(false);
}
// if src or dest categories are null or they are not equal
if (Tree.GetTopParent(src) is not ICatTreeViewCategory srcCat ||
Tree.GetTopParent(dest) is not ICatTreeViewCategory destCat ||
!Equals(srcCat, destCat))
{
return(false);
}
return(true);
}
public override void ItemDelete(ICatTreeViewItem item)
{
if (!DeleteAccepted(GetTitle(item)))
{
return;
}
try {
var parent = item.Parent as ICatTreeViewItem;
ModelItemDelete(item);
// collapse parent if doesn't have any sub items
if (parent != null && parent.Items.Count == 0)
{
parent.IsExpanded = false;
}
OnAfterItemDelete(item, EventArgs.Empty);
}
catch (Exception ex) {
ErrorDialog.Show(ex);
}
}
public virtual void OnDrop(object src, ICatTreeViewItem dest, bool aboveDest, bool copy)
{
// groups
if (src is ICatTreeViewGroup srcGroup && dest is ICatTreeViewGroup destGroup)
{
GroupMove(srcGroup, destGroup, aboveDest);
return;
}
// items
if (src is ICatTreeViewItem srcItem && dest != null)
{
if (copy)
{
ItemCopy(srcItem, dest);
}
else
{
ItemMove(srcItem, dest, aboveDest);
}
}
OnAfterDrop(this, new(src, dest, aboveDest, copy));
}
protected virtual void ModelGroupCreate(ICatTreeViewItem root, string name) => throw new NotImplementedException();
protected virtual string ValidateNewGroupName(ICatTreeViewItem root, string name) => throw new NotImplementedException();
protected virtual void ModelItemDelete(ICatTreeViewItem item) => throw new NotImplementedException();
public virtual void ItemCopy(ICatTreeViewItem item, ICatTreeViewItem dest) => throw new NotImplementedException();
private static bool GetNewName(bool forItem, string oldName, out string newName, ICatTreeViewItem item, Func <ICatTreeViewItem, string, string> validator, string icon)
{
var action = string.IsNullOrEmpty(oldName) ? "New" : "Rename";
var target = forItem ? "Item" : "Group";
var question = string.IsNullOrEmpty(oldName)
? $"Enter the name of the new {target}."
: $"Enter the new name for the {target}.";
var result = InputDialog.Open(
icon,
$"{action} {target}",
question,
oldName,
answer => validator(item, answer),
out newName);
return(result);
}
public virtual bool CanDrop(object src, ICatTreeViewItem dest) => CanDrop(src as ICatTreeViewItem, dest);
public virtual void GroupCreate(ICatTreeViewItem root) => throw new NotImplementedException();
public virtual void ItemMove(ICatTreeViewItem item, ICatTreeViewItem dest, bool aboveDest) => throw new NotImplementedException();
protected virtual void ModelItemRename(ICatTreeViewItem item, string name) => throw new NotImplementedException();
public virtual void ItemDelete(ICatTreeViewItem item) => throw new NotImplementedException();