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Replaced delegates with new interface ITreeBuilder

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tznind
2020-12-15 09:37:59 +00:00
parent e7dcd49506
commit 8fe8128b0b
3 changed files with 169 additions and 62 deletions
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17
UICatalog/Scenarios/TreeViewFileSystem.cs
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@@ -73,12 +73,14 @@ namespace UICatalog.Scenarios {
/// </summary>
private void SetupFileSystemDelegates ()
{
// As a shortcut to enumerating half the file system, tell tree that all directories are expandable (even if they turn out to be empty later on)
_treeView.CanExpandGetter = (o)=>o is DirectoryInfo;
_treeView.TreeBuilder = new DelegateTreeBuilder(
// Determines how to compute children of any given branch
_treeView.ChildrenGetter = GetChildren;
// Determines how to compute children of any given branch
GetChildren,
// As a shortcut to enumerating half the file system, tell tree that all directories are expandable (even if they turn out to be empty later on)
(o)=>o is DirectoryInfo
);
// Determines how to represent objects as strings on the screen
_treeView.AspectGetter = AspectGetter;
@@ -88,9 +90,8 @@ namespace UICatalog.Scenarios {
{
ClearObjects();
// Clear any previous delegates
_treeView.CanExpandGetter = null;
_treeView.ChildrenGetter = null;
// Set builder to serve children of ITreeNode objects
_treeView.TreeBuilder = new TreeNodeBuilder();
// Add 2 root nodes with simple set of subfolders
_treeView.AddObject(CreateSimpleRoot());