89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
#include "Delegate.hpp"
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int Delegate::command_event_type = SDL_RegisterEvents(1);
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Delegate::Delegate(Node* parent) : Node(parent) {}
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void Delegate::add_subscriber(Subscriber s, int type)
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{
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if (subscribers.count(type) == 0)
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{
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subscribers[type] = {};
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}
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subscribers[type].push_back(s);
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}
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void Delegate::dispatch()
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{
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SDL_Event event;
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while (SDL_PollEvent(&event))
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{
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for (auto iter = subscribers.begin(); iter != subscribers.end(); iter++)
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{
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if (event.type == iter->first)
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{
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cancelling_propagation = false;
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for (Subscriber s : iter->second)
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{
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if (s.o->is_active())
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{
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s.f(event);
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if (cancelling_propagation)
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{
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break;
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}
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}
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}
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}
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}
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if (event.type == command_event_type)
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{
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delete static_cast<bool*>(event.user.data2);
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}
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}
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}
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bool Delegate::compare(SDL_Event& event, const std::vector<std::string>& commands, bool neutral, bool cancel)
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{
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for (const std::string& command : commands)
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{
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if (compare(event, command, neutral, cancel))
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{
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return true;
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}
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}
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return false;
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}
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bool Delegate::compare(SDL_Event& event, const std::string& command, bool neutral, bool cancel)
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{
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return event.type == command_event_type &&
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(command == "" || command == get_event_command(event)) &&
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(neutral || (cancel == get_event_cancel_state(event)));
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}
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bool Delegate::compare_cancel(SDL_Event& event, const std::string& command)
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{
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return compare(event, command, false, true);
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}
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bool Delegate::compare_neutral(SDL_Event& event, const std::string& command)
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{
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return compare(event, command, true);
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}
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void Delegate::cancel_propagation()
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{
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cancelling_propagation = true;
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}
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const std::string& Delegate::get_event_command(SDL_Event& event) const
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{
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return *static_cast<std::string*>(event.user.data1);
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}
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bool Delegate::get_event_cancel_state(SDL_Event& event) const
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{
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return *static_cast<bool*>(event.user.data2);
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}
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