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+/* Copyright 2015 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <QAbstractListModel>
+#include <type_traits>
+#include <functional>
+#include <memory>
+
+class BaseAbstractCommonModel : public QAbstractListModel
+{
+ Q_OBJECT
+public:
+ explicit BaseAbstractCommonModel(const Qt::Orientation orientation, QObject *parent = nullptr);
+
+ // begin QAbstractItemModel interface
+ int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+ int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+ QVariant data(const QModelIndex &index, int role) const override;
+ QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+ bool setData(const QModelIndex &index, const QVariant &value, int role) override;
+ Qt::ItemFlags flags(const QModelIndex &index) const override;
+ // end QAbstractItemModel interface
+
+ virtual int size() const = 0;
+ virtual int entryCount() const = 0;
+
+ virtual QVariant formatData(const int index, int role, const QVariant &data) const { return data; }
+ virtual QVariant sanetizeData(const int index, int role, const QVariant &data) const { return data; }
+
+protected:
+ virtual QVariant get(const int index, const int entry, const int role) const = 0;
+ virtual bool set(const int index, const int entry, const int role, const QVariant &value) = 0;
+ virtual bool canSet(const int entry) const = 0;
+ virtual QString entryTitle(const int entry) const = 0;
+
+ void notifyAboutToAddObject(const int at);
+ void notifyObjectAdded();
+ void notifyAboutToRemoveObject(const int at);
+ void notifyObjectRemoved();
+ void notifyBeginReset();
+ void notifyEndReset();
+
+ const Qt::Orientation m_orientation;
+};
+
+template<typename Object>
+class AbstractCommonModel : public BaseAbstractCommonModel
+{
+public:
+ explicit AbstractCommonModel(const Qt::Orientation orientation)
+ : BaseAbstractCommonModel(orientation) {}
+ virtual ~AbstractCommonModel() {}
+
+ int size() const override { return m_objects.size(); }
+ int entryCount() const override { return m_entries.size(); }
+
+ void append(const Object &object)
+ {
+ notifyAboutToAddObject(size());
+ m_objects.append(object);
+ notifyObjectAdded();
+ }
+ void prepend(const Object &object)
+ {
+ notifyAboutToAddObject(0);
+ m_objects.prepend(object);
+ notifyObjectAdded();
+ }
+ void insert(const Object &object, const int index)
+ {
+ if (index >= size())
+ {
+ prepend(object);
+ }
+ else if (index <= 0)
+ {
+ append(object);
+ }
+ else
+ {
+ notifyAboutToAddObject(index);
+ m_objects.insert(index, object);
+ notifyObjectAdded();
+ }
+ }
+ void remove(const int index)
+ {
+ notifyAboutToRemoveObject(index);
+ m_objects.removeAt(index);
+ notifyObjectRemoved();
+ }
+ Object get(const int index) const
+ {
+ return m_objects.at(index);
+ }
+
+private:
+ friend class CommonModel;
+ QVariant get(const int index, const int entry, const int role) const override
+ {
+ if (m_entries.size() < entry || !m_entries[entry].second.contains(role))
+ {
+ return QVariant();
+ }
+ return m_entries[entry].second.value(role)->get(m_objects.at(index));
+ }
+ bool set(const int index, const int entry, const int role, const QVariant &value) override
+ {
+ if (m_entries.size() < entry || !m_entries[entry].second.contains(role))
+ {
+ return false;
+ }
+ IEntry *e = m_entries[entry].second.value(role);
+ if (!e->canSet())
+ {
+ return false;
+ }
+ e->set(m_objects[index], value);
+ return true;
+ }
+ bool canSet(const int entry) const override
+ {
+ if (m_entries.size() < entry || !m_entries[entry].second.contains(Qt::EditRole))
+ {
+ return false;
+ }
+ IEntry *e = m_entries[entry].second.value(Qt::EditRole);
+ return e->canSet();
+ }
+
+ QString entryTitle(const int entry) const override
+ {
+ return m_entries.at(entry).first;
+ }
+
+private:
+ struct IEntry
+ {
+ virtual ~IEntry() {}
+ virtual void set(Object &object, const QVariant &value) = 0;
+ virtual QVariant get(const Object &object) const = 0;
+ virtual bool canSet() const = 0;
+ };
+ template<typename T>
+ struct VariableEntry : public IEntry
+ {
+ typedef T (Object::*Member);
+
+ explicit VariableEntry(Member member)
+ : m_member(member) {}
+
+ void set(Object &object, const QVariant &value) override
+ {
+ object.*m_member = value.value<T>();
+ }
+ QVariant get(const Object &object) const override
+ {
+ return QVariant::fromValue<T>(object.*m_member);
+ }
+ bool canSet() const override { return true; }
+
+ private:
+ Member m_member;
+ };
+ template<typename T>
+ struct FunctionEntry : public IEntry
+ {
+ typedef T (Object::*Getter)() const;
+ typedef void (Object::*Setter)(T);
+
+ explicit FunctionEntry(Getter getter, Setter setter)
+ : m_getter(m_getter), m_setter(m_setter) {}
+
+ void set(Object &object, const QVariant &value) override
+ {
+ object.*m_setter(value.value<T>());
+ }
+ QVariant get(const Object &object) const override
+ {
+ return QVariant::fromValue<T>(object.*m_getter());
+ }
+ bool canSet() const override { return !!m_setter; }
+
+ private:
+ Getter m_getter;
+ Setter m_setter;
+ };
+
+ QList<Object> m_objects;
+ QVector<QPair<QString, QMap<int, IEntry *>>> m_entries;
+
+ void addEntryInternal(IEntry *e, const int entry, const int role)
+ {
+ if (m_entries.size() <= entry)
+ {
+ m_entries.resize(entry + 1);
+ }
+ m_entries[entry].second.insert(role, e);
+ }
+
+protected:
+ template<typename Getter, typename Setter>
+ typename std::enable_if<std::is_member_function_pointer<Getter>::value && std::is_member_function_pointer<Getter>::value, void>::type
+ addEntry(Getter getter, Setter setter, const int entry, const int role)
+ {
+ addEntryInternal(new FunctionEntry<typename std::result_of<Getter>::type>(getter, setter), entry, role);
+ }
+ template<typename Getter>
+ typename std::enable_if<std::is_member_function_pointer<Getter>::value, void>::type
+ addEntry(Getter getter, const int entry, const int role)
+ {
+ addEntryInternal(new FunctionEntry<typename std::result_of<Getter>::type>(getter, nullptr), entry, role);
+ }
+ template<typename T>
+ typename std::enable_if<!std::is_member_function_pointer<T (Object::*)>::value, void>::type
+ addEntry(T (Object::*member), const int entry, const int role)
+ {
+ addEntryInternal(new VariableEntry<T>(member), entry, role);
+ }
+
+ void setEntryTitle(const int entry, const QString &title)
+ {
+ m_entries[entry].first = title;
+ }
+};
+template<typename Object>
+class AbstractCommonModel<Object *> : public BaseAbstractCommonModel
+{
+public:
+ explicit AbstractCommonModel(const Qt::Orientation orientation)
+ : BaseAbstractCommonModel(orientation) {}
+ virtual ~AbstractCommonModel()
+ {
+ qDeleteAll(m_objects);
+ }
+
+ int size() const override { return m_objects.size(); }
+ int entryCount() const override { return m_entries.size(); }
+
+ void append(Object *object)
+ {
+ notifyAboutToAddObject(size());
+ m_objects.append(object);
+ notifyObjectAdded();
+ }
+ void prepend(Object *object)
+ {
+ notifyAboutToAddObject(0);
+ m_objects.prepend(object);
+ notifyObjectAdded();
+ }
+ void insert(Object *object, const int index)
+ {
+ if (index >= size())
+ {
+ prepend(object);
+ }
+ else if (index <= 0)
+ {
+ append(object);
+ }
+ else
+ {
+ notifyAboutToAddObject(index);
+ m_objects.insert(index, object);
+ notifyObjectAdded();
+ }
+ }
+ void remove(const int index)
+ {
+ notifyAboutToRemoveObject(index);
+ m_objects.removeAt(index);
+ notifyObjectRemoved();
+ }
+ Object *get(const int index) const
+ {
+ return m_objects.at(index);
+ }
+ int find(Object * const obj) const
+ {
+ return m_objects.indexOf(obj);
+ }
+
+ QList<Object *> getAll() const
+ {
+ return m_objects;
+ }
+
+private:
+ friend class CommonModel;
+ QVariant get(const int index, const int entry, const int role) const override
+ {
+ if (m_entries.size() < entry || !m_entries[entry].second.contains(role))
+ {
+ return QVariant();
+ }
+ return m_entries[entry].second.value(role)->get(m_objects.at(index));
+ }
+ bool set(const int index, const int entry, const int role, const QVariant &value) override
+ {
+ if (m_entries.size() < entry || !m_entries[entry].second.contains(role))
+ {
+ return false;
+ }
+ IEntry *e = m_entries[entry].second.value(role);
+ if (!e->canSet())
+ {
+ return false;
+ }
+ e->set(m_objects[index], value);
+ return true;
+ }
+ bool canSet(const int entry) const override
+ {
+ if (m_entries.size() < entry || !m_entries[entry].second.contains(Qt::EditRole))
+ {
+ return false;
+ }
+ IEntry *e = m_entries[entry].second.value(Qt::EditRole);
+ return e->canSet();
+ }
+
+ QString entryTitle(const int entry) const override
+ {
+ return m_entries.at(entry).first;
+ }
+
+private:
+ struct IEntry
+ {
+ virtual ~IEntry() {}
+ virtual void set(Object *object, const QVariant &value) = 0;
+ virtual QVariant get(Object *object) const = 0;
+ virtual bool canSet() const = 0;
+ };
+ template<typename T>
+ struct VariableEntry : public IEntry
+ {
+ typedef T (Object::*Member);
+
+ explicit VariableEntry(Member member)
+ : m_member(member) {}
+
+ void set(Object *object, const QVariant &value) override
+ {
+ object->*m_member = value.value<T>();
+ }
+ QVariant get(Object *object) const override
+ {
+ return QVariant::fromValue<T>(object->*m_member);
+ }
+ bool canSet() const override { return true; }
+
+ private:
+ Member m_member;
+ };
+ template<typename T>
+ struct FunctionEntry : public IEntry
+ {
+ typedef T (Object::*Getter)() const;
+ typedef void (Object::*Setter)(T);
+
+ explicit FunctionEntry(Getter getter, Setter setter)
+ : m_getter(getter), m_setter(setter) {}
+
+ void set(Object *object, const QVariant &value) override
+ {
+ (object->*m_setter)(value.value<T>());
+ }
+ QVariant get(Object *object) const override
+ {
+ return QVariant::fromValue<T>((object->*m_getter)());
+ }
+ bool canSet() const override { return !!m_setter; }
+
+ private:
+ Getter m_getter;
+ Setter m_setter;
+ };
+ template<typename T>
+ struct LambdaEntry : public IEntry
+ {
+ using Getter = std::function<T(Object *)>;
+
+ explicit LambdaEntry(Getter getter)
+ : m_getter(getter) {}
+
+ void set(Object *object, const QVariant &value) override {}
+ QVariant get(Object *object) const override
+ {
+ return QVariant::fromValue<T>(m_getter(object));
+ }
+ bool canSet() const override { return false; }
+
+ private:
+ Getter m_getter;
+ };
+
+ QList<Object *> m_objects;
+ QVector<QPair<QString, QMap<int, IEntry *>>> m_entries;
+
+ void addEntryInternal(IEntry *e, const int entry, const int role)
+ {
+ if (m_entries.size() <= entry)
+ {
+ m_entries.resize(entry + 1);
+ }
+ m_entries[entry].second.insert(role, e);
+ }
+
+protected:
+ template<typename Getter, typename Setter>
+ typename std::enable_if<std::is_member_function_pointer<Getter>::value && std::is_member_function_pointer<Getter>::value, void>::type
+ addEntry(const int entry, const int role, Getter getter, Setter setter)
+ {
+ addEntryInternal(new FunctionEntry<typename std::result_of<Getter>::type>(getter, setter), entry, role);
+ }
+ template<typename T>
+ typename std::enable_if<std::is_member_function_pointer<typename FunctionEntry<T>::Getter>::value, void>::type
+ addEntry(const int entry, const int role, typename FunctionEntry<T>::Getter getter)
+ {
+ addEntryInternal(new FunctionEntry<T>(getter, nullptr), entry, role);
+ }
+ template<typename T>
+ typename std::enable_if<!std::is_member_function_pointer<T (Object::*)>::value, void>::type
+ addEntry(const int entry, const int role, T (Object::*member))
+ {
+ addEntryInternal(new VariableEntry<T>(member), entry, role);
+ }
+ template<typename T>
+ void addEntry(const int entry, const int role, typename LambdaEntry<T>::Getter lambda)
+ {
+ addEntryInternal(new LambdaEntry<T>(lambda), entry, role);
+ }
+
+ void setEntryTitle(const int entry, const QString &title)
+ {
+ m_entries[entry].first = title;
+ }
+
+ void setAll(const QList<Object *> objects)
+ {
+ notifyBeginReset();
+ qDeleteAll(m_objects);
+ m_objects = objects;
+ notifyEndReset();
+ }
+};