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https://github.com/RGBCube/serenity
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LibCore: Move LibGUI/GObject to LibCore/CObject.
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commit
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30 changed files with 144 additions and 75 deletions
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@ -1,7 +1,7 @@
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#include <LibCore/CEvent.h>
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#include <LibGUI/GObject.h>
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#include <LibCore/CObject.h>
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CChildEvent::CChildEvent(Type type, GObject& child)
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CChildEvent::CChildEvent(Type type, CObject& child)
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: CEvent(type)
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, m_child(child.make_weak_ptr())
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{
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69
LibCore/CEvent.h
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69
LibCore/CEvent.h
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#pragma once
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#include <AK/AKString.h>
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#include <AK/Types.h>
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#include <AK/WeakPtr.h>
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#include <AK/Function.h>
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class CObject;
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class CEvent {
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public:
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enum Type {
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Invalid = 0,
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Quit,
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Timer,
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DeferredDestroy,
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DeferredInvoke,
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ChildAdded,
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ChildRemoved,
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};
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CEvent() { }
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explicit CEvent(unsigned type) : m_type(type) { }
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virtual ~CEvent() { }
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unsigned type() const { return m_type; }
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private:
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unsigned m_type { Type::Invalid };
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};
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class CDeferredInvocationEvent : public CEvent {
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friend class GEventLoop;
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public:
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CDeferredInvocationEvent(Function<void(CObject&)> invokee)
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: CEvent(CEvent::Type::DeferredInvoke)
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, m_invokee(move(invokee))
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{
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}
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private:
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Function<void(CObject&)> m_invokee;
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};
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class CTimerEvent final : public CEvent {
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public:
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explicit CTimerEvent(int timer_id)
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: CEvent(CEvent::Timer), m_timer_id(timer_id)
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{
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}
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~CTimerEvent() { }
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int timer_id() const { return m_timer_id; }
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private:
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int m_timer_id;
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};
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class CChildEvent final : public CEvent {
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public:
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CChildEvent(Type, CObject& child);
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~CChildEvent();
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CObject* child() { return m_child.ptr(); }
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const CObject* child() const { return m_child.ptr(); }
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private:
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WeakPtr<CObject> m_child;
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};
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107
LibCore/CObject.cpp
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107
LibCore/CObject.cpp
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#include <LibCore/CObject.h>
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#include <LibCore/CEvent.h>
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#include <LibGUI/GEventLoop.h>
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#include <AK/Assertions.h>
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#include <stdio.h>
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CObject::CObject(CObject* parent)
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: m_parent(parent)
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{
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if (m_parent)
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m_parent->add_child(*this);
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}
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CObject::~CObject()
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{
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stop_timer();
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if (m_parent)
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m_parent->remove_child(*this);
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auto children_to_delete = move(m_children);
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for (auto* child : children_to_delete)
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delete child;
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}
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void CObject::event(CEvent& event)
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{
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switch (event.type()) {
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case GEvent::Timer:
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return timer_event(static_cast<CTimerEvent&>(event));
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case GEvent::DeferredDestroy:
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delete this;
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break;
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case GEvent::ChildAdded:
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case GEvent::ChildRemoved:
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return child_event(static_cast<CChildEvent&>(event));
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case GEvent::Invalid:
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ASSERT_NOT_REACHED();
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break;
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default:
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break;
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}
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}
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void CObject::add_child(CObject& object)
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{
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m_children.append(&object);
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GEventLoop::current().post_event(*this, make<CChildEvent>(GEvent::ChildAdded, object));
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}
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void CObject::remove_child(CObject& object)
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{
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for (ssize_t i = 0; i < m_children.size(); ++i) {
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if (m_children[i] == &object) {
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m_children.remove(i);
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GEventLoop::current().post_event(*this, make<CChildEvent>(GEvent::ChildRemoved, object));
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return;
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}
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}
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}
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void CObject::timer_event(CTimerEvent&)
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{
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}
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void CObject::child_event(CChildEvent&)
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{
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}
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void CObject::start_timer(int ms)
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{
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if (m_timer_id) {
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dbgprintf("CObject{%p} already has a timer!\n", this);
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ASSERT_NOT_REACHED();
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}
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m_timer_id = GEventLoop::register_timer(*this, ms, true);
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}
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void CObject::stop_timer()
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{
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if (!m_timer_id)
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return;
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bool success = GEventLoop::unregister_timer(m_timer_id);
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ASSERT(success);
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m_timer_id = 0;
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}
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void CObject::delete_later()
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{
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GEventLoop::current().post_event(*this, make<CEvent>(CEvent::DeferredDestroy));
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}
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void CObject::dump_tree(int indent)
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{
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for (int i = 0; i < indent; ++i) {
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printf(" ");
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}
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printf("%s{%p}\n", class_name(), this);
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for (auto* child : children()) {
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child->dump_tree(indent + 2);
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}
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}
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void CObject::deferred_invoke(Function<void(CObject&)> invokee)
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{
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GEventLoop::current().post_event(*this, make<CDeferredInvocationEvent>(move(invokee)));
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}
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49
LibCore/CObject.h
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49
LibCore/CObject.h
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#pragma once
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#include <AK/Function.h>
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#include <AK/Vector.h>
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#include <AK/Weakable.h>
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class CEvent;
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class CChildEvent;
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class CTimerEvent;
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class CObject : public Weakable<CObject> {
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public:
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CObject(CObject* parent = nullptr);
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virtual ~CObject();
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virtual const char* class_name() const { return "CObject"; }
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virtual void event(CEvent&);
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Vector<CObject*>& children() { return m_children; }
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CObject* parent() { return m_parent; }
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const CObject* parent() const { return m_parent; }
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void start_timer(int ms);
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void stop_timer();
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bool has_timer() const { return m_timer_id; }
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void add_child(CObject&);
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void remove_child(CObject&);
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void delete_later();
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void dump_tree(int indent = 0);
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void deferred_invoke(Function<void(CObject&)>);
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virtual bool is_widget() const { return false; }
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virtual bool is_window() const { return false; }
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protected:
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virtual void timer_event(CTimerEvent&);
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virtual void child_event(CChildEvent&);
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private:
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CObject* m_parent { nullptr };
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int m_timer_id { 0 };
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Vector<CObject*> m_children;
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};
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@ -1,5 +1,6 @@
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OBJS = \
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CElapsedTimer.o \
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CObject.o \
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CEvent.o
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LIBRARY = libcore.a
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