singleton: add reloadable Singleton type

This commit is contained in:
outfoxxed 2024-03-13 00:57:03 -07:00
parent 463f9a297f
commit 211f454de9
Signed by: outfoxxed
GPG key ID: 4C88A185FB89301E
6 changed files with 108 additions and 5 deletions

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@ -65,13 +65,13 @@ find_package(Qt6 REQUIRED COMPONENTS ${QT_FPDEPS})
qt_standard_project_setup(REQUIRES 6.6)
set(QT_QML_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/qml_modules)
file(GENERATE
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/pchstub.cpp
CONTENT ""
)
# pch breaks clang-tidy..... somehow
if (NOT NO_PCH)
file(GENERATE
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/pchstub.cpp
CONTENT ""
)
add_library(qt-pch ${CMAKE_CURRENT_BINARY_DIR}/pchstub.cpp)
target_link_libraries(qt-pch PRIVATE ${QT_DEPS})
target_precompile_headers(qt-pch PUBLIC

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@ -16,6 +16,7 @@ qt_add_library(quickshell-core STATIC
floatingwindow.cpp
panelinterface.cpp
popupwindow.cpp
singleton.cpp
)
set_source_files_properties(main.cpp PROPERTIES COMPILE_DEFINITIONS GIT_REVISION="${GIT_REVISION}")

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@ -13,5 +13,6 @@ headers = [
"panelinterface.hpp",
"floatingwindow.hpp",
"popupwindow.hpp",
"singleton.hpp",
]
-----

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@ -16,6 +16,7 @@
#include "qmlglobal.hpp"
#include "reload.hpp"
#include "shell.hpp"
#include "singleton.hpp"
#include "watcher.hpp"
RootWrapper::RootWrapper(QString rootPath)
@ -49,6 +50,7 @@ void RootWrapper::reloadGraph(bool hard) {
if (this->root != nullptr) {
QuickshellSettings::reset();
SingletonRegistry::instance()->flip();
}
QDir::setCurrent(this->originalWorkingDirectory);

64
src/core/singleton.cpp Normal file
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@ -0,0 +1,64 @@
#include "singleton.hpp"
#include <qlogging.h>
#include <qmap.h>
#include <qobject.h>
#include <qqmlcontext.h>
#include <qqmlengine.h>
#include <qurl.h>
#include "reload.hpp"
void Singleton::componentComplete() {
auto* context = QQmlEngine::contextForObject(this);
if (context == nullptr) {
qWarning() << "not registering singleton not created in the qml context:" << this;
return;
}
auto url = context->baseUrl();
if (this->parent() != nullptr || context->contextObject() != this) {
qWarning() << "tried to register singleton" << this
<< "which is not the root component of its file" << url;
return;
}
SingletonRegistry::instance()->install(url, this);
this->ReloadPropagator::componentComplete();
}
SingletonRegistry::~SingletonRegistry() {
delete this->previousRegistry;
delete this->currentRegistry;
}
void SingletonRegistry::install(const QUrl& url, Singleton* singleton) {
QObject* old = nullptr;
if (this->previousRegistry != nullptr) {
old = this->previousRegistry->value(url);
}
if (this->currentRegistry == nullptr) {
this->currentRegistry = new QMap<QUrl, QObject*>();
}
this->currentRegistry->insert(url, singleton);
singleton->onReload(old);
}
void SingletonRegistry::flip() {
delete this->previousRegistry;
this->previousRegistry = this->currentRegistry;
this->currentRegistry = nullptr;
}
SingletonRegistry* SingletonRegistry::instance() {
static SingletonRegistry* instance = nullptr; // NOLINT
if (instance == nullptr) {
instance = new SingletonRegistry();
}
return instance;
}

35
src/core/singleton.hpp Normal file
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@ -0,0 +1,35 @@
#pragma once
#include <qobject.h>
#include <qqmlintegration.h>
#include <qtclasshelpermacros.h>
#include <qtmetamacros.h>
#include <qurl.h>
#include "reload.hpp"
///! The root component for reloadable singletons.
/// All singletons should inherit from this type.
class Singleton: public ReloadPropagator {
Q_OBJECT;
QML_ELEMENT;
public:
void componentComplete() override;
};
class SingletonRegistry {
public:
SingletonRegistry() = default;
~SingletonRegistry();
Q_DISABLE_COPY_MOVE(SingletonRegistry);
void install(const QUrl& url, Singleton* singleton);
void flip();
static SingletonRegistry* instance();
private:
QMap<QUrl, QObject*>* previousRegistry = nullptr;
QMap<QUrl, QObject*>* currentRegistry = nullptr;
};