pygui: start adding support to hide nodes, show them, and save metadata about them being hidden

daemon/core/gui/graph/graph.py

@@ -536,6 +536,23 @@ class CanvasGraph(tk.Canvas):
         self.core.deleted_canvas_nodes(nodes)
         self.core.deleted_canvas_edges(edges)
 
+    def hide_selected_objects(self) -> None:
+        edges = set()
+        for object_id in self.selection:
+            #  delete selection box
+            selection_id = self.selection[object_id]
+            self.delete(selection_id)
+
+            # hide node and related edges
+            if object_id in self.nodes:
+                canvas_node = self.nodes[object_id]
+                canvas_node.hide()
+                # hide related edges
+                for edge in canvas_node.edges:
+                    if edge in edges:
+                        continue
+                    edges.add(edge)
+
     def delete_edge(self, edge: CanvasEdge) -> None:
         edge.delete()
         del self.edges[edge.token]

daemon/core/gui/graph/node.py

@@ -360,3 +360,9 @@ class CanvasNode:
         self.core_node.icon = icon_path
         self.image = Images.create(icon_path, nodeutils.ICON_SIZE)
         self.canvas.itemconfig(self.id, image=self.image)
+
+    def hide(self) -> None:
+        self.canvas.addtag_withtag(tags.HIDDEN, self.id)
+        self.canvas.addtag_withtag(tags.HIDDEN, self.text_id)
+        self.canvas.itemconfig(self.id, state=tk.HIDDEN)
+        self.canvas.itemconfig(self.text_id, state=tk.HIDDEN)

daemon/core/gui/graph/tags.py

@@ -14,6 +14,7 @@ NODE: str = "node"
 WALLPAPER: str = "wallpaper"
 SELECTION: str = "selectednodes"
 MARKER: str = "marker"
+HIDDEN: str = "hidden"
 ORGANIZE_TAGS: List[str] = [
     WALLPAPER,
     GRIDLINE,

daemon/core/gui/menubar.py

@@ -116,11 +116,13 @@ class Menubar(tk.Menu):
         menu.add_command(
             label="Delete", accelerator="Ctrl+D", command=self.click_delete
         )
+        menu.add_command(label="Hide", accelerator="Ctrl+H", command=self.click_hide)
         self.add_cascade(label="Edit", menu=menu)
         self.app.master.bind_all("<Control-x>", self.click_cut)
         self.app.master.bind_all("<Control-c>", self.click_copy)
         self.app.master.bind_all("<Control-v>", self.click_paste)
         self.app.master.bind_all("<Control-d>", self.click_delete)
+        self.app.master.bind_all("<Control-h>", self.click_hide)
         self.edit_menu = menu
 
     def draw_canvas_menu(self) -> None:
@@ -413,6 +415,9 @@ class Menubar(tk.Menu):
         self.canvas.copy()
         self.canvas.delete_selected_objects()
 
+    def click_hide(self, _event: tk.Event = None) -> None:
+        self.canvas.hide_selected_objects()
+
     def click_session_options(self) -> None:
         logging.debug("Click options")
         dialog = SessionOptionsDialog(self.app)