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Updated scenario to show both trees at once

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This commit is contained in:
tznind
2020-12-16 12:53:32 +00:00
parent dc184ba469
commit 3d1b40cd08
2 changed files with 56 additions and 64 deletions
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2
Terminal.Gui/Views/TreeView.cs
View File

@@ -763,7 +763,7 @@ namespace Terminal.Gui {
/// <param name="availableWidth"></param>
public virtual void Draw(ConsoleDriver driver,ColorScheme colorScheme, int y, int availableWidth)
{
driver.SetAttribute(tree.SelectedObject == Model ?
driver.SetAttribute(tree.SelectedObject == Model && tree.HasFocus?
colorScheme.HotFocus :
colorScheme.Normal);

118
UICatalog/Scenarios/TreeViewFileSystem.cs
View File

@@ -17,18 +17,13 @@ namespace UICatalog.Scenarios {
/// <summary>
/// A tree view where nodes are files and folders
/// </summary>
TreeView<FileSystemInfo> _treeViewFiles;
TreeView<FileSystemInfo> treeViewFiles;
/// <summary>
/// A tree view where nodes are <see cref="ITreeNode"/>
/// </summary>
TreeView _treeViewNodes;
TreeView treeViewNodes;
/// <summary>
/// Currently showing tree view (either <see cref="_treeViewFiles"/> or <see cref="_treeViewNodes"/>)
/// </summary>
ITreeView _treeView;
public override void Setup ()
{
Win.Title = this.GetName();
@@ -48,23 +43,58 @@ namespace UICatalog.Scenarios {
Top.Add (menu);
var statusBar = new StatusBar (new StatusItem [] {
new StatusItem(Key.F2, "~F2~ File Tree", () => SwitchToFileTree()),
new StatusItem(Key.F3, "~F3~ Clear Objects", () => ClearObjects()),
new StatusItem(Key.F4, "~F4~ Simple Tree", () => SwitchToSimpleTree()),
new StatusItem(Key.CtrlMask | Key.Q, "~^Q~ Quit", () => Quit()),
});
Top.Add (statusBar);
var lblFiles = new Label("File Tree:"){
X=0,
Y=1
};
Win.Add(lblFiles);
_treeViewFiles = new TreeView<FileSystemInfo> () {
treeViewFiles = new TreeView<FileSystemInfo> () {
X = 0,
Y = 0,
Y = Pos.Bottom(lblFiles),
Width = 40,
Height = 9,
};
SetupFileTree();
Win.Add(treeViewFiles);
var lblNodeTree = new Label("Node Tree:"){
X=0,
Y=Pos.Bottom(treeViewFiles)+1
};
Win.Add(lblNodeTree);
treeViewNodes = new TreeView() {
X = 0,
Y = Pos.Bottom(lblNodeTree),
Width = Dim.Fill (),
Height = Dim.Fill (),
};
SetupNodeTree();
Win.Add(treeViewNodes);
}
private void SetupNodeTree ()
{
// Add 2 root nodes with simple set of subfolders
treeViewNodes.AddObject(CreateSimpleRoot());
treeViewNodes.AddObject(CreateSimpleRoot());
}
private void SetupFileTree ()
{
// setup delegates
_treeViewFiles.TreeBuilder = new DelegateTreeBuilder<FileSystemInfo>(
treeViewFiles.TreeBuilder = new DelegateTreeBuilder<FileSystemInfo>(
// Determines how to compute children of any given branch
GetChildren,
@@ -73,53 +103,31 @@ namespace UICatalog.Scenarios {
);
// Determines how to represent objects as strings on the screen
_treeViewFiles.AspectGetter = FileSystemAspectGetter;
treeViewFiles.AspectGetter = FileSystemAspectGetter;
_treeViewNodes = new TreeView() {
X = 0,
Y = 0,
Width = Dim.Fill (),
Height = Dim.Fill (),
};
string root = System.IO.Path.GetPathRoot(Environment.CurrentDirectory);
if(root == null)
{
MessageBox.ErrorQuery(10,5,"Error","Unable to determine file system root","ok");
return;
}
treeViewFiles.AddObjects(DriveInfo.GetDrives().Select(d=>d.RootDirectory));
}
private void ShowLines ()
{
_treeView.ShowBranchLines = !_treeView.ShowBranchLines;
_treeView.SetNeedsDisplay();
treeViewNodes.ShowBranchLines = !treeViewNodes.ShowBranchLines;
treeViewNodes.SetNeedsDisplay();
treeViewFiles.ShowBranchLines = !treeViewFiles.ShowBranchLines;
treeViewFiles.SetNeedsDisplay();
}
private void ShowExpandableSymbol ()
{
_treeView.ShowExpandableSymbol = !_treeView.ShowExpandableSymbol;
_treeView.SetNeedsDisplay();
treeViewNodes.ShowExpandableSymbol = !treeViewNodes.ShowExpandableSymbol;
treeViewNodes.SetNeedsDisplay();
treeViewFiles.ShowExpandableSymbol = !treeViewFiles.ShowExpandableSymbol;
treeViewFiles.SetNeedsDisplay();
}
private void SwitchToSimpleTree ()
{
Win.Remove (_treeViewFiles);
Win.Add(_treeViewNodes);
_treeView = _treeViewNodes;
ClearObjects();
// Add 2 root nodes with simple set of subfolders
_treeViewNodes.AddObject(CreateSimpleRoot());
_treeViewNodes.AddObject(CreateSimpleRoot());
}
private ITreeNode CreateSimpleRoot ()
{
return new TreeNode("Root"){
Children = new List<ITreeNode>()
{
@@ -178,22 +186,6 @@ namespace UICatalog.Scenarios {
};
}
private void ClearObjects()
{
_treeView?.ClearObjects();
}
private void SwitchToFileTree()
{
// switch trees
Win.Remove(_treeViewNodes);
Win.Add (_treeViewFiles);
_treeView = _treeViewFiles;
ClearObjects();
_treeViewFiles.AddObjects(DriveInfo.GetDrives().Select(d=>d.RootDirectory));
}
private IEnumerable<FileSystemInfo> GetChildren(FileSystemInfo model)
{
// If it is a directory it's children are all contained files and dirs