Imports System
Imports EnvDTE
Imports EnvDTE80
Imports EnvDTE90
Imports System.Diagnostics
Public Module CollapseTree
Sub CollapseAll()
' Get the the Solution Explorer tree
Dim solutionExplorer As UIHierarchy
solutionExplorer = DTE.Windows.Item(Constants.vsext_wk_SProjectWindow).Object()
' Check if there is any open solution
If (solutionExplorer.UIHierarchyItems.Count = 0) Then
Return
End If
' Get the top node (the name of the solution)
Dim rootNode As UIHierarchyItem = solutionExplorer.UIHierarchyItems.Item(1)
rootNode.DTE.SuppressUI = True
' Collapse each project node
Collapse(rootNode, solutionExplorer)
' Select the solution node, or else when you click
' on the solution window
' scrollbar, it will synchronize the open document
' with the tree and pop
' out the corresponding node which is probably not what you want.
rootNode.Select(vsUISelectionType.vsUISelectionTypeSelect)
rootNode.DTE.SuppressUI = False
End Sub
Private Sub Collapse(ByVal item As UIHierarchyItem, ByRef solutionExplorer As UIHierarchy)
For Each innerItem As UIHierarchyItem In item.UIHierarchyItems
If innerItem.UIHierarchyItems.Count > 0 Then
' Re-cursive call
Collapse(innerItem, solutionExplorer)
' Collapse
If innerItem.UIHierarchyItems.Expanded Then
innerItem.UIHierarchyItems.Expanded = False
If innerItem.UIHierarchyItems.Expanded = True Then
' Bug in VS 2005
innerItem.Select(vsUISelectionType.vsUISelectionTypeSelect)
solutionExplorer.DoDefaultAction()
End If
End If
End If
Next
End Sub
End Module
