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Tidy up and comments

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tznind
2020-11-23 11:31:07 +00:00
parent 8f4087a64b
commit de06dd1de3
2 changed files with 202 additions and 33 deletions
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63
UICatalog/Scenarios/TreeViewFileSystem.cs
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@@ -6,7 +6,7 @@ using System.Text;
using Terminal.Gui;
namespace UICatalog.Scenarios {
[ScenarioMetadata (Name: "TreeViewFileSystem", Description: "A Terminal.Gui tree view file system explorer")]
[ScenarioMetadata (Name: "TreeViewFileSystem", Description: "Hierarchical file system explorer based on TreeView")]
[ScenarioCategory ("Controls")]
[ScenarioCategory ("Dialogs")]
[ScenarioCategory ("Text")]
@@ -31,6 +31,9 @@ namespace UICatalog.Scenarios {
Top.Add (menu);
var statusBar = new StatusBar (new StatusItem [] {
new StatusItem(Key.F2, "~F2~ Add Root Drives", () => AddRootDrives()),
new StatusItem(Key.F3, "~F3~ Remove Root Object", () => RemoveRoot()),
new StatusItem(Key.F4, "~F4~ Clear Objects", () => ClearObjects()),
new StatusItem(Key.CtrlMask | Key.Q, "~^Q~ Quit", () => Quit()),
});
Top.Add (statusBar);
@@ -51,31 +54,59 @@ namespace UICatalog.Scenarios {
return;
}
// Determines how to compute children of any given branch
_treeView.ChildrenGetter = GetChildren;
_treeView.AddObject(new DirectoryInfo(root));
// Determines how to represent objects as strings on the screen
_treeView.AspectGetter = AspectGetter;
Win.Add (_treeView);
}
private IEnumerable<object> GetChildren(object model)
{
// If it is a directory it's children are all contained files and dirs
if(model is DirectoryInfo d) {
try {
return d.GetDirectories().Cast<object>().Union(d.GetFileSystemInfos());
}
catch(SystemException ex) {
return new []{ex};
private void ClearObjects()
{
_treeView.ClearObjects();
}
private void AddRootDrives()
{
_treeView.AddObjects(DriveInfo.GetDrives().Select(d=>d.RootDirectory));
}
private void RemoveRoot()
{
if(_treeView.SelectedObject == null)
MessageBox.ErrorQuery(10,5,"Error","No object selected","ok");
else {
_treeView.Remove(_treeView.SelectedObject);
}
}
return new object[0];
}
private IEnumerable<object> GetChildren(object model)
{
// If it is a directory it's children are all contained files and dirs
if(model is DirectoryInfo d) {
try {
return d.GetDirectories().Cast<object>().Union(d.GetFileSystemInfos());
}
catch(SystemException ex) {
return new []{ex};
}
}
private void Quit ()
return new object[0];
}
private string AspectGetter(object model)
{
if(model is DirectoryInfo d)
return d.Name;
if(model is FileInfo f)
return f.Name;
return model.ToString();
}
private void Quit ()
{
Application.RequestStop ();
}
}
}