action for modifying the card list

src/data/action/set.cpp

+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <data/action/set.hpp>
+#include <data/set.hpp>
+#include <data/card.hpp>
+#include <util/error.hpp>
+
+// ----------------------------------------------------------------------------- : Add card
+
+AddCardAction::AddCardAction(Set& set)
+	: CardListAction(set), card(new Card(*set.game))
+{}
+
+AddCardAction::AddCardAction(Set& set, const CardP& card)
+	: CardListAction(set), card(card)
+{}
+
+String AddCardAction::getName(bool to_undo) const {
+	return _("Add card");
+}
+
+void AddCardAction::perform(bool to_undo) {
+	if (!to_undo) {
+		set.cards.push_back(card);
+	} else {
+		assert(!set.cards.empty());
+		set.cards.pop_back();
+	}
+}
+
+
+// ----------------------------------------------------------------------------- : Remove card
+
+RemoveCardAction::RemoveCardAction(Set& set, const CardP& card)
+	: CardListAction(set), card(card)
+{
+	// find the card_id of the card we want to remove
+	vector<CardP>::iterator it = find(set.cards.begin(), set.cards.end(), card);
+	if (it != set.cards.end()) {
+		card_id = it - set.cards.begin();
+	} else {
+		throw InternalError(_("Card to remove not found in set"));
+	}
+}
+
+String RemoveCardAction::getName(bool to_undo) const {
+	return _("Remove card");
+}
+
+void RemoveCardAction::perform(bool to_undo) {
+	if (!to_undo) {
+		assert(card_id < set.cards.size());
+		set.cards.erase(set.cards.begin() + card_id);
+	} else {
+		assert(card_id <= set.cards.size());
+		set.cards.insert(set.cards.begin() + card_id, card);
+	}
+}
+
+
+// ----------------------------------------------------------------------------- : Reorder cards
+
+ReorderCardsAction::ReorderCardsAction(Set& set, size_t card_id1, size_t card_id2)
+	: CardListAction(set), card_id1(card_id1), card_id2(card_id2)
+{}
+
+String ReorderCardsAction::getName(bool to_undo) const {
+	return _("Reorder cards");
+}
+
+void ReorderCardsAction::perform(bool to_undo) {
+	assert(card_id1 < set.cards.size());
+	assert(card_id2 < set.cards.size());
+	swap(set.cards[card_id1], set.cards[card_id2]);
+}

src/data/action/set.hpp

+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#ifndef HEADER_DATA_ACTION_SET
+#define HEADER_DATA_ACTION_SET
+
+/** @file data/action/set.hpp
+ *
+ *  Actions operating on Sets
+ */
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <util/action_stack.hpp>
+
+class Set;
+DECLARE_POINTER_TYPE(Card);
+
+// ----------------------------------------------------------------------------- : Add card
+
+/// An Action the changes the card list of a set
+class CardListAction : public Action {
+  public:
+	inline CardListAction(Set& set) : set(set) {}
+	
+  protected:
+	Set& set; // the set owns this action, so the set will not be destroyed before this
+};
+
+/// Adding a new card to a set
+class AddCardAction : public CardListAction {
+  public:
+	AddCardAction(Set& set);
+	AddCardAction(Set& set, const CardP& card);
+	
+	virtual String getName(bool to_undo) const;
+	virtual void   perform(bool to_undo);
+	
+  private:
+	CardP card; ///< The new card
+};
+
+// ----------------------------------------------------------------------------- : Remove card
+
+/// Removing a card from a set
+class RemoveCardAction : public CardListAction {
+  public:
+	RemoveCardAction(Set& set, const CardP& card);
+	
+	virtual String getName(bool to_undo) const;
+	virtual void   perform(bool to_undo);
+	
+  private:
+	CardP  card;	///< The removed card
+	size_t card_id;	///< Position of the card in the set
+};
+
+// ----------------------------------------------------------------------------- : Reorder cards
+
+/// Change the position of a card in the card list by swapping two cards
+class ReorderCardsAction : public CardListAction {
+  public:
+	ReorderCardsAction(Set& set, size_t card_id1, size_t card_id2);
+	
+	virtual String getName(bool to_undo) const;
+	virtual void   perform(bool to_undo);
+	
+  private:
+	size_t card_id1, card_id2;	///< Positions of the two cards to swap
+};
+
+// ----------------------------------------------------------------------------- : EOF
+#endif