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Fix tree node navigation with key arrows to be more usable for deep hierarchies

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This commit is contained in:
Wojciech Figat
2021-12-07 14:59:22 +01:00
parent 1cc26c871d
commit 983d5dee31
2 changed files with 17 additions and 25 deletions
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40
Source/Editor/GUI/Tree/Tree.cs
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@@ -339,12 +339,10 @@ namespace FlaxEditor.GUI.Tree
var node = SelectedNode;
// Check if has focus and if any node is focused and it isn't a root
if (ContainsFocus && node != null && !node.IsRoot)
if (ContainsFocus && node != null && node.AutoFocus)
{
var window = Root;
// Check if can perform update
if (_keyUpdateTime >= KeyUpdateTimeout)
if (_keyUpdateTime >= KeyUpdateTimeout && window is WindowRootControl windowRoot && windowRoot.Window.IsFocused)
{
bool keyUpArrow = window.GetKeyDown(KeyboardKeys.ArrowUp);
bool keyDownArrow = window.GetKeyDown(KeyboardKeys.ArrowDown);
@@ -358,38 +356,29 @@ namespace FlaxEditor.GUI.Tree
Assert.AreNotEqual(-1, myIndex);
// Up
TreeNode toSelect = null;
if (keyUpArrow)
{
TreeNode toSelect = null;
if (myIndex == 0)
{
// Select parent (if it exists and it isn't a root)
if (parentNode != null && !parentNode.IsRoot)
toSelect = parentNode;
// Select parent
toSelect = parentNode;
}
else
{
// Select previous parent child
toSelect = nodeParent.GetChild(myIndex - 1) as TreeNode;
// Check if is valid and expanded and has any children
// Select last child if is valid and expanded and has any children
if (toSelect != null && toSelect.IsExpanded && toSelect.HasAnyVisibleChild)
{
// Select last child
toSelect = toSelect.GetChild(toSelect.ChildrenCount - 1) as TreeNode;
}
}
if (toSelect != null)
{
// Select
Select(toSelect);
toSelect.Focus();
}
}
// Down
else
{
TreeNode toSelect = null;
if (node.IsExpanded && node.HasAnyVisibleChild)
{
// Select the first child
@@ -398,13 +387,14 @@ namespace FlaxEditor.GUI.Tree
else if (myIndex == nodeParent.ChildrenCount - 1)
{
// Select next node after parent
if (parentNode != null)
while (parentNode != null && toSelect == null)
{
int parentIndex = parentNode.IndexInParent;
if (parentIndex != -1 && parentIndex < parentNode.Parent.ChildrenCount - 1)
{
toSelect = parentNode.Parent.GetChild(parentIndex + 1) as TreeNode;
}
parentNode = parentNode.Parent as TreeNode;
}
}
else
@@ -412,12 +402,12 @@ namespace FlaxEditor.GUI.Tree
// Select next parent child
toSelect = nodeParent.GetChild(myIndex + 1) as TreeNode;
}
if (toSelect != null)
{
// Select
Select(toSelect);
toSelect.Focus();
}
}
if (toSelect != null && toSelect.AutoFocus)
{
// Select
Select(toSelect);
toSelect.Focus();
}
// Reset time
@@ -452,7 +442,7 @@ namespace FlaxEditor.GUI.Tree
if (node.IsCollapsed)
{
// Select parent if has and is not a root
if (node.HasParent && node.Parent is TreeNode nodeParentNode && !nodeParentNode.IsRoot)
if (node.HasParent && node.Parent is TreeNode nodeParentNode && nodeParentNode.AutoFocus)
{
Select(nodeParentNode);
nodeParentNode.Focus();