Add a few Tree methods

tree.cxx

@@ -23,6 +23,18 @@ Fl_Tree_Item* go_fltk_Tree_add(Fl_Tree *tree, const char *path) {
   return tree->add(path);
 }
 
+int go_fltk_Tree_remove(Fl_Tree *tree, Fl_Tree_Item *item) {
+  return tree->remove(item);
+}
+
+void go_fltk_Tree_clear(Fl_Tree *tree) {
+  tree->clear();
+}
+
+void go_fltk_Tree_clear_children(Fl_Tree *tree, Fl_Tree_Item *item) {
+  tree->clear_children(item);
+}  
+
 void go_fltk_Tree_Item_set_widget(Fl_Tree_Item *item, Fl_Widget *widget) {
   item->widget(widget);
 }
@@ -41,3 +53,12 @@ const int go_FL_TREE_CONNECTOR_SOLID = (int)FL_TREE_CONNECTOR_SOLID;
 void go_fltk_Tree_set_connector_style(Fl_Tree *tree, int style) {
   tree->connectorstyle((Fl_Tree_Connector)style);
 }
+
+const int go_FL_TREE_SELECT_NONE = (int)FL_TREE_SELECT_NONE;
+const int go_FL_TREE_SELECT_SINGLE = (int)FL_TREE_SELECT_SINGLE;
+const int go_FL_TREE_SELECT_MULTI = (int)FL_TREE_SELECT_MULTI;
+const int go_FL_TREE_SELECT_SINGLE_DRAGGABLE = (int)FL_TREE_SELECT_SINGLE_DRAGGABLE;
+
+void go_fltk_Tree_set_select_mode(Fl_Tree *tree, int selectMode) {
+  tree->selectmode((Fl_Tree_Select)selectMode);
+}  

tree.go

@@ -35,26 +35,53 @@ func (t *Tree) Add(path string) TreeItem {
 	itemPtr := C.go_fltk_Tree_add((*C.Fl_Tree)(t.ptr()), pathStr)
 	return TreeItem{ptr: itemPtr}
 }
-func (t TreeItem) SetWidget(w *widget) {
-	C.go_fltk_Tree_Item_set_widget(t.ptr, w.ptr())
+func (t *Tree) Remove(item TreeItem) bool {
+	return C.go_fltk_Tree_remove((*C.Fl_Tree)(t.ptr()), item.ptr) == 0
+}
+func (t *Tree) Clear() {
+	C.go_fltk_Tree_clear((*C.Fl_Tree)(t.ptr()))
+}
+func (t *Tree) ClearChildren(item TreeItem) {
+	C.go_fltk_Tree_clear_children((*C.Fl_Tree)(t.ptr()), item.ptr)
+}
+
+func (t TreeItem) SetWidget(w Widget) {
+	C.go_fltk_Tree_Item_set_widget(t.ptr, w.getWidget().ptr())
 }
 
 type TreeItemDrawMode uint
+
 var (
-	TreeItemDrawDefault = TreeItemDrawMode(C.go_FL_TREE_ITEM_DRAW_DEFAULT)
+	TreeItemDrawDefault        = TreeItemDrawMode(C.go_FL_TREE_ITEM_DRAW_DEFAULT)
 	TreeItemDrawLabelAndWidget = TreeItemDrawMode(C.go_FL_TREE_ITEM_DRAW_LABEL_AND_WIDGET)
-	TreeItemHeightFromWidget = TreeItemDrawMode(C.go_FL_TREE_ITEM_HEIGHT_FROM_WIDGET)
+	TreeItemHeightFromWidget   = TreeItemDrawMode(C.go_FL_TREE_ITEM_HEIGHT_FROM_WIDGET)
 )
+
 func (t *Tree) SetItemDrawMode(drawMode TreeItemDrawMode) {
 	C.go_fltk_Tree_set_item_draw_mode((*C.Fl_Tree)(t.ptr()), C.uint(drawMode))
 }
 
 type TreeConnector int
+
 var (
-	TreeConnectorNone = TreeConnector(C.go_FL_TREE_CONNECTOR_NONE)
+	TreeConnectorNone   = TreeConnector(C.go_FL_TREE_CONNECTOR_NONE)
 	TreeConnectorDotted = TreeConnector(C.go_FL_TREE_CONNECTOR_DOTTED)
-	TreeConnectorSolid = TreeConnector(C.go_FL_TREE_CONNECTOR_SOLID)
+	TreeConnectorSolid  = TreeConnector(C.go_FL_TREE_CONNECTOR_SOLID)
 )
+
 func (t *Tree) SetConnectorStyle(style TreeConnector) {
 	C.go_fltk_Tree_set_connector_style((*C.Fl_Tree)(t.ptr()), C.int(style))
 }
+
+type TreeSelect int
+
+var (
+	TreeSelectNone            = TreeSelect(C.go_FL_TREE_SELECT_NONE)
+	TreeSelectSingle          = TreeSelect(C.go_FL_TREE_SELECT_SINGLE)
+	TreeSelectMulti           = TreeSelect(C.go_FL_TREE_SELECT_MULTI)
+	TreeSelectSingleDraggable = TreeSelect(C.go_FL_TREE_SELECT_SINGLE_DRAGGABLE)
+)
+
+func (t *Tree) SetSelectMode(selectMode TreeSelect) {
+	C.go_fltk_Tree_set_select_mode((*C.Fl_Tree)(t.ptr()), C.int(selectMode))
+}

tree.h

@@ -13,6 +13,9 @@ extern "C" {
 
   extern void go_fltk_Tree_set_show_root(Fl_Tree* tree, int show);
   extern Fl_Tree_Item* go_fltk_Tree_add(Fl_Tree* tree, const char* path);
+  extern int go_fltk_Tree_remove(Fl_Tree *tree, Fl_Tree_Item *item);
+  extern void go_fltk_Tree_clear(Fl_Tree *tree);
+  extern void go_fltk_Tree_clear_children(Fl_Tree* tree, Fl_Tree_Item* item);  
 
   extern void go_fltk_Tree_Item_set_widget(Fl_Tree_Item* item, Fl_Widget* widget);
 
@@ -24,7 +27,13 @@ extern "C" {
   extern const int go_FL_TREE_CONNECTOR_NONE;
   extern const int go_FL_TREE_CONNECTOR_DOTTED;
   extern const int go_FL_TREE_CONNECTOR_SOLID;
-  extern void go_fltk_Tree_set_connector_style(Fl_Tree* tree, int style);
+  extern void go_fltk_Tree_set_connector_style(Fl_Tree *tree, int style);
+
+  extern const int go_FL_TREE_SELECT_NONE;
+  extern const int go_FL_TREE_SELECT_SINGLE;
+  extern const int go_FL_TREE_SELECT_MULTI;
+  extern const int go_FL_TREE_SELECT_SINGLE_DRAGGABLE;
+  extern void go_fltk_Tree_set_select_mode(Fl_Tree* tree, int selectMode);
 
 #ifdef __cplusplus
 }