Class DeleteNodeCommand

src/commands/node/basic_operations.py:169–613

Command for deleting nodes with complete state preservation.

class DeleteNodeCommand(CommandBase):
    """Command for deleting nodes with complete state preservation."""
    
    def __init__(self, node_graph, node):
        """
        Initialize delete node command.
        
        Args:
            node_graph: The NodeGraph instance
            node: Node to delete
        """
        super().__init__(f"Delete '{node.title}' node")
        self.node_graph = node_graph
        self.node = node
        self.node_state = None
        self.affected_connections = []
        self.node_index = None
    
    def execute(self) -> bool:
        """Delete node after preserving complete state."""
        try:
            # Check if this node object is actually in the nodes list
            found_in_list = False
            node_in_list = None
            for i, node in enumerate(self.node_graph.nodes):
                if node is self.node:  # Same object reference
                    found_in_list = True
                    node_in_list = node
                    self.node_index = i
                    break
                elif hasattr(node, 'uuid') and hasattr(self.node, 'uuid') and node.uuid == self.node.uuid:
                    # Use the node that's actually in the list (UUID synchronization fix)
                    self.node = node
                    found_in_list = True
                    node_in_list = node
                    self.node_index = i
                    break
            
            if not found_in_list:
                print(f"Error: Node '{getattr(self.node, 'title', 'Unknown')}' not found in graph")
                return False
            
            # Preserve complete node state including colors and size
            self.node_state = {
                'id': self.node.uuid,
                'title': self.node.title,
                'description': getattr(self.node, 'description', ''),
                'position': self.node.pos(),
                'code': getattr(self.node, 'code', ''),
                'gui_code': getattr(self.node, 'gui_code', ''),
                'gui_get_values_code': getattr(self.node, 'gui_get_values_code', ''),
                'function_name': getattr(self.node, 'function_name', None),
                'width': getattr(self.node, 'width', 150),
                'height': getattr(self.node, 'height', 150),
                'base_width': getattr(self.node, 'base_width', 150),
                'is_reroute': getattr(self.node, 'is_reroute', False),
                # Preserve colors
                'color_title_bar': getattr(self.node, 'color_title_bar', None),