quickshell/src/core/variants.hpp

57 lines
1.6 KiB
C++

#pragma once
#include <qcontainerfwd.h>
#include <qlist.h>
#include <qlogging.h>
#include <qmap.h>
#include <qobject.h>
#include <qqmlcomponent.h>
#include <qqmlparserstatus.h>
#include <qtmetamacros.h>
#include "reload.hpp"
// extremely inefficient map
template <typename K, typename V>
class AwfulMap {
public:
[[nodiscard]] bool contains(const K& key) const;
[[nodiscard]] V* get(const K& key);
void insert(K key, V value); // assumes no duplicates
bool remove(const K& key); // returns true if anything was removed
QList<QPair<K, V>> values;
};
///! Creates instances of a component based on a given set of variants.
/// Creates and destroys instances of the given component when the given property changes.
///
/// See [Quickshell.screens] for an example of using `Variants` to create copies of a window per
/// screen.
///
/// [Quickshell.screens]: ../quickshell#prop.screens
class Variants: public Reloadable {
Q_OBJECT;
/// The component to create instances of
Q_PROPERTY(QQmlComponent* component MEMBER mComponent);
/// The list of sets of properties to create instances with.
/// Each set creates an instance of the component, which are updated when the input sets update.
Q_PROPERTY(QList<QVariant> variants MEMBER mVariants WRITE setVariants);
Q_CLASSINFO("DefaultProperty", "component");
QML_ELEMENT;
public:
explicit Variants(QObject* parent = nullptr): Reloadable(parent) {}
void onReload(QObject* oldInstance) override;
void componentComplete() override;
private:
void setVariants(QVariantList variants);
void updateVariants();
QQmlComponent* mComponent = nullptr;
QVariantList mVariants;
AwfulMap<QVariantMap, QObject*> instances;
};