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59267da72b
Base.h provides a backwards compatibility shim (enabled unless NAMESPACED_WPILIB is defined) that does a "using namespace frc". However, as some header files do not include Base.h, this may be a breaking change in some corner cases (with an easy fix). Fixes #218.
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2011-2016. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in the root directory of */
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/* the project. */
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/*----------------------------------------------------------------------------*/
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#pragma once
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#include <memory>
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#include <string>
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#include "SmartDashboard/Sendable.h"
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namespace frc {
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class Command;
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/**
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* This class provides an easy way to link commands to inputs.
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*
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* It is very easy to link a polled input to a command. For instance, you could
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* link the trigger button of a joystick to a "score" command or an encoder
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* reaching
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* a particular value.
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*
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* It is encouraged that teams write a subclass of Trigger if they want to have
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* something unusual (for instance, if they want to react to the user holding
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* a button while the robot is reading a certain sensor input). For this, they
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* only have to write the {@link Trigger#Get()} method to get the full
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* functionality
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* of the Trigger class.
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*/
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class Trigger : public Sendable {
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public:
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Trigger() = default;
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virtual ~Trigger() = default;
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bool Grab();
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virtual bool Get() = 0;
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void WhenActive(Command* command);
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void WhileActive(Command* command);
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void WhenInactive(Command* command);
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void CancelWhenActive(Command* command);
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void ToggleWhenActive(Command* command);
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void InitTable(std::shared_ptr<ITable> subtable) override;
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std::shared_ptr<ITable> GetTable() const override;
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std::string GetSmartDashboardType() const override;
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protected:
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std::shared_ptr<ITable> m_table;
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};
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} // namespace frc
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