From fe452e3ac96699d51d47ecdc43c58778b512d72a Mon Sep 17 00:00:00 2001 From: Andrew Date: Wed, 13 Feb 2013 10:46:39 -0600 Subject: Added SigList class. --- data/siglist.h | 130 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 data/siglist.h (limited to 'data/siglist.h') diff --git a/data/siglist.h b/data/siglist.h new file mode 100644 index 00000000..b6432b6e --- /dev/null +++ b/data/siglist.h @@ -0,0 +1,130 @@ +/* Copyright 2013 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. + */ + +#ifndef SIGLIST_H +#define SIGLIST_H + +#include +#include + +// A QList that allows emitting signals when the list changes. +// Since QObject doesn't support templates, to use this class with a +// certain type, you should create a class deriving from SigList and then +// call the DEFINE_SIGLIST_SIGNALS(T) and SETUP_SIGLIST_SIGNALS(T) macros. +template +class SigList : public QList +{ + +public: + explicit SigList() : QList() {} + + virtual void append(const T &value); + virtual void append(const QList &other); + + virtual void clear(); + + virtual void erase(iterator pos); + virtual void erase(iterator first, iterator last); + + virtual void insert(int i, const T &t); + virtual void insert(iterator before, const T &t); + + virtual void move(int from, int to); + + virtual void pop_back() { takeLast(); } + virtual void pop_front() { takeFirst(); } + + virtual void push_back(const T &t) { append(t); } + virtual void push_front(const T &t) { prepend(t); } + + virtual void prepend(const T &t); + + virtual int removeAll(const T &t); + virtual bool removeOne(const T &t); + + virtual void removeAt(int i) { takeAt(i); } + virtual void removeFirst() { takeFirst(); } + virtual void removeLast() { takeLast(); } + + virtual void swap(QList &other); + virtual void swap(int i, int j); + + virtual T takeAt(int i); + virtual T takeFirst(); + virtual T takeLast(); + + virtual QList &operator +=(const QList &other) { append(other); return *this; } + virtual QList &operator +=(const T &value) { append(value); return *this; } + virtual QList &operator <<(const QList &other) { append(other); return *this; } + virtual QList &operator <<(const T &value) { append(value); return *this; } + + virtual QList &operator =(const QList &other); + + + // Signal emitted after an item is added to the list. + // Contains a reference to item and the item's new index. + virtual void onItemAdded(const T &item, int index) = 0; + + // Signal emitted after multiple items are added to the list at once. + // The items parameter is a const reference to a QList of the items that + // were added. + // The firstIndex parameter is the new index of the first item added. + virtual void onItemsAdded(const QList &items, int firstIndex) = 0; + + // Signal emitted after an item is removed to the list. + // Contains a reference to the item and the item's old index. + virtual void onItemRemoved(const T &item, int index) = 0; + + // Signal emitted after multiple items are removed from the list at once. + // The items parameter is a const reference to a QList of the items that + // were added. + // The firstIndex parameter is the new index of the first item added. + virtual void onItemsRemoved(const QList &items, int firstIndex) = 0; + + // Signal emitted after an item is moved to another index. + // Contains the item, the old index, and the new index. + virtual void onItemMoved(const T &item, int oldIndex, int newIndex) = 0; + + // Signal emitted after an operation that changes the whole list occurs. + // This signal should be treated as if all data in the entire list was cleared + // and new data added in its place. + virtual void onInvalidated() = 0; +}; + +// Defines the signals for a SigList +#define DEFINE_SIGLIST_SIGNALS(TYPE) \ + Q_SIGNAL void itemAdded(TYPE const &item, int index);\ + Q_SIGNAL void itemsAdded(const QList &items, int firstIndex);\ + Q_SIGNAL void itemRemoved(TYPE const &item, int index);\ + Q_SIGNAL void itemsRemoved(const QList &items, int firstIndex);\ + Q_SIGNAL void itemMoved(TYPE const &item, int oldIndex, int newIndex);\ + Q_SIGNAL void invalidated(); + +// Overrides the onItem* functions and causes them to emit their corresponding +// signals. +#define SETUP_SIGLIST_SIGNALS(TYPE) \ + virtual void onItemAdded(TYPE const &item, int index)\ + { emit itemAdded(item, index); }\ + virtual void onItemsAdded(const QList &items, int firstIndex)\ + { emit itemsAdded(items, firstIndex); }\ + virtual void onItemRemoved(TYPE const &item, int index)\ + { emit itemRemoved(item, index); }\ + virtual void onItemsRemoved(const QList &items, int firstIndex)\ + { emit itemsRemoved(items, firstIndex); }\ + virtual void onItemMoved(TYPE const &item, int oldIndex, int newIndex)\ + { emit itemMoved(item, oldIndex, newIndex); }\ + virtual void onInvalidated() { emit invalidated(); } + +#endif // SIGLIST_H -- cgit v1.2.3