pulp::view::CommandHandler Class Reference

Interface implemented by any object that can perform commands. More...

#include <command_registry.hpp>

Public Member Functions
virtual	~CommandHandler ()=default
virtual std::vector< CommandID >	commands () const =0
	Report which commands this handler can perform.
virtual bool	perform_command (CommandID id)=0
	Perform a command.

Detailed Description

Interface implemented by any object that can perform commands.

A handler is typically a View subclass but doesn't have to be — the registry holds raw CommandHandler* and the owner is responsible for removing the handler before destruction (see CommandRegistry::remove_handler). This mirrors how Pulp's other listener APIs (timer, async-update) work.

Constructor & Destructor Documentation

~CommandHandler()

virtual pulp::view::CommandHandler::~CommandHandler ( )

virtualdefault

Member Function Documentation

commands()

virtual std::vector< CommandID > pulp::view::CommandHandler::commands ( ) const

pure virtual

Report which commands this handler can perform.

Called by the registry when dispatching; an empty result means "I don't know about that command — try the next handler". The default implementation returns the static commands() set, which makes per-instance overrides cheap.

perform_command()

virtual bool pulp::view::CommandHandler::perform_command ( CommandID id )

pure virtual

Perform a command.

Return true if handled (stops the dispatch walk), false to let the next handler in the chain try.

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The documentation for this class was generated from the following file:

• /home/runner/work/pulp/pulp/core/view/include/pulp/view/command_registry.hpp