Add expand all capacity into TreeView class

Author: donho

PowerEditor/src/WinControls/ProjectPanel/TreeView.cpp

@@ -263,7 +263,7 @@ void TreeView::cleanSubEntries(HTREEITEM hTreeItem)
 }
 }
 
-void TreeView::foldRecursively(HTREEITEM hParentItem) const
+void TreeView::foldExpandRecursively(HTREEITEM hParentItem, bool isFold) const
 {
 if (!hParentItem)
 return;
@@ -272,19 +272,33 @@ void TreeView::foldRecursively(HTREEITEM hParentItem) const
 
 for (; hItem != NULL; hItem = getNextSibling(hItem))
 {
-foldRecursively(hItem);
-fold(hItem);
+foldExpandRecursively(hItem, isFold);
+if (isFold)
+{
+fold(hItem);
+}
+else
+{
+expand(hItem);
+}
 }
 }
 
-void TreeView::foldAll() const
+void TreeView::foldExpandAll(bool isFold) const
 {
 for (HTREEITEM tvProj = getRoot();
 tvProj != NULL;
 tvProj = getNextSibling(tvProj))
 {
-foldRecursively(tvProj);
-fold(tvProj);
+foldExpandRecursively(tvProj, isFold);
+if (isFold)
+{
+fold(tvProj);
+}
+else
+{
+expand(tvProj);
+}
 }
 }
 

PowerEditor/src/WinControls/ProjectPanel/TreeView.h

@@ -88,8 +88,16 @@ class TreeView : public Window {
 TreeView_Expand(_hSelf, hItem, TVE_COLLAPSE);
 };
 
-void foldRecursively(HTREEITEM hItem) const;
-void foldAll() const;
+void foldExpandRecursively(HTREEITEM hItem, bool isFold) const;
+void foldExpandAll(bool isFold) const;
+
+void foldAll() const {
+foldExpandAll(true);
+};
+
+void expandAll() const {
+foldExpandAll(false);
+};
 
 void toggleExpandCollapse(HTREEITEM hItem) const {
 TreeView_Expand(_hSelf, hItem, TVE_TOGGLE);