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Added IndexOf method to TreeView to allow for keyboard context menus

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This commit is contained in:
Thomas Nind
2022-05-10 16:05:09 +01:00
parent 5c39f6af48
commit e60d7f4363
3 changed files with 138 additions and 43 deletions
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95
UICatalog/Scenarios/TreeViewFileSystem.cs
View File

@@ -78,6 +78,7 @@ namespace UICatalog.Scenarios {
treeViewFiles.ObjectActivated += TreeViewFiles_ObjectActivated;
treeViewFiles.MouseClick += TreeViewFiles_MouseClick;
treeViewFiles.KeyPress += TreeViewFiles_KeyPress;
SetupFileTree ();
@@ -89,6 +90,29 @@ namespace UICatalog.Scenarios {
red = Application.Driver.MakeAttribute (Color.Red, Color.Blue);
}
private void TreeViewFiles_KeyPress (View.KeyEventEventArgs obj)
{
if(obj.KeyEvent.Key == (Key.R | Key.CtrlMask)) {
var selected = treeViewFiles.SelectedObject;
// nothing is selected
if (selected == null)
return;
var location = treeViewFiles.IndexOf (selected);
//selected object is offscreen or somehow not found
if (location == null || location < 0 || location > treeViewFiles.Frame.Height)
return;
ShowContextMenu (new Point (
5 + treeViewFiles.Frame.X,
location.Value + treeViewFiles.Frame.Y + 2),
selected);
}
}
private void TreeViewFiles_MouseClick (View.MouseEventArgs obj)
{
// if user right clicks
@@ -100,39 +124,44 @@ namespace UICatalog.Scenarios {
if (rightClicked == null)
return;
var menu = new ContextMenu ();
menu.Position = new Point(
ShowContextMenu (new Point (
obj.MouseEvent.X + treeViewFiles.Frame.X,
obj.MouseEvent.Y + treeViewFiles.Frame.Y +1);
menu.MenuItems = new MenuBarItem (new [] { new MenuItem ("Properties",null,()=> {
MessageBox.Query($"{rightClicked.Name}({rightClicked.GetType().Name})",Describe(rightClicked),"Ok");
}
) });
menu.Show ();
obj.MouseEvent.Y + treeViewFiles.Frame.Y + 2),
rightClicked);
}
}
private string Describe (FileSystemInfo f)
private void ShowContextMenu (Point screenPoint, FileSystemInfo forObject)
{
try {
var menu = new ContextMenu ();
menu.Position = screenPoint;
if (f is FileInfo fi) {
return "Size:" + fi.Length;
}
menu.MenuItems = new MenuBarItem (new [] { new MenuItem ("Properties", null, () => ShowPropertiesOf (forObject)) });
Application.MainLoop.Invoke(menu.Show);
}
if (f is DirectoryInfo d) {
return $@"Parent:{d.Parent}
Attributes:{d.Attributes}";
}
} catch (Exception) {
private void ShowPropertiesOf (FileSystemInfo fileSystemInfo)
{
if (fileSystemInfo is FileInfo f) {
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
sb.AppendLine ($"Path:{f.DirectoryName}");
sb.AppendLine ($"Size:{f.Length:N0} bytes");
sb.AppendLine ($"Modified:{ f.LastWriteTime}");
sb.AppendLine ($"Created:{ f.CreationTime}");
return "Could not get properties";
MessageBox.Query (f.Name, sb.ToString (), "Close");
}
return null;
if (fileSystemInfo is DirectoryInfo dir) {
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
sb.AppendLine ($"Path:{dir.Parent?.FullName}");
sb.AppendLine ($"Modified:{ dir.LastWriteTime}");
sb.AppendLine ($"Created:{ dir.CreationTime}");
MessageBox.Query (dir.Name, sb.ToString (), "Close");
}
}
private void SetupScrollBar ()
@@ -187,25 +216,7 @@ Attributes:{d.Attributes}";
private void TreeViewFiles_ObjectActivated (ObjectActivatedEventArgs<FileSystemInfo> obj)
{
if (obj.ActivatedObject is FileInfo f) {
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
sb.AppendLine ($"Path:{f.DirectoryName}");
sb.AppendLine ($"Size:{f.Length:N0} bytes");
sb.AppendLine ($"Modified:{ f.LastWriteTime}");
sb.AppendLine ($"Created:{ f.CreationTime}");
MessageBox.Query (f.Name, sb.ToString (), "Close");
}
if (obj.ActivatedObject is DirectoryInfo dir) {
System.Text.StringBuilder sb = new System.Text.StringBuilder ();
sb.AppendLine ($"Path:{dir.Parent?.FullName}");
sb.AppendLine ($"Modified:{ dir.LastWriteTime}");
sb.AppendLine ($"Created:{ dir.CreationTime}");
MessageBox.Query (dir.Name, sb.ToString (), "Close");
}
ShowPropertiesOf (obj.ActivatedObject);
}
private void ShowLines ()