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2024-03-06 14:54:30 +08:00
commit edac2715f0
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--- a/lib/engine/rs_blocklist.h
+++ b/lib/engine/rs_blocklist.h
@@ -0,0 +1,116 @@
+/****************************************************************************
+**
+** This file is part of the LibreCAD project, a 2D CAD program
+**
+** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
+** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
+**
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software 
+** Foundation and appearing in the file gpl-2.0.txt included in the
+** packaging of this file.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+**
+** This copyright notice MUST APPEAR in all copies of the script!  
+**
+**********************************************************************/
+
+
+#ifndef RS_BLOCKLIST_H
+#define RS_BLOCKLIST_H
+
+
+#include <QList>
+
+class QString;
+class RS_Block;
+class RS_BlockListListener;
+
+/**
+ * List of blocks.
+ *
+ * @see RS_Block
+ *
+ * @author Andrew Mustun
+ */
+class RS_BlockList {
+public:
+    RS_BlockList(bool owner=false);
+	virtual ~RS_BlockList() = default;
+
+    void clear();
+    /**
+     * @return Number of blocks available.
+     */
+	int count() const;
+
+    /**
+     * @return Block at given position or NULL if i is out of range.
+     */
+	RS_Block* at(int i);
+	RS_Block* at(int i) const;
+	//! \{ \brief range based loop
+	QList<RS_Block*>::iterator begin();
+	QList<RS_Block*>::iterator end();
+	QList<RS_Block*>::const_iterator begin()const;
+	QList<RS_Block*>::const_iterator end()const;
+	//! \}
+
+    void activate(const QString& name);
+    void activate(RS_Block* block);
+    //! @return The active block of NULL if no block is activated.
+	RS_Block* getActive();
+
+    virtual bool add(RS_Block* block, bool notify=true);
+    virtual void addNotification();
+    virtual void remove(RS_Block* block);
+    virtual bool rename(RS_Block* block, const QString& name);
+    //virtual void editBlock(RS_Block* block, const RS_Block& source);
+    RS_Block* find(const QString& name);
+    QString newName(const QString& suggestion = "");
+    void toggle(const QString& name);
+    void toggle(RS_Block* block);
+    void freezeAll(bool freeze);
+
+    void addListener(RS_BlockListListener* listener);
+    void removeListener(RS_BlockListListener* listener);
+
+    bool isOwner() const {return owner;}
+    void setOwner(bool ow) {owner = ow;}
+
+    /**
+     * Sets the block list modified status to 'm'.
+     */
+	void setModified(bool m);
+
+    /**
+     * @retval true The block list has been modified.
+     * @retval false The block list has not been modified.
+     */
+	bool isModified() const;
+
+    friend std::ostream& operator << (std::ostream& os, RS_BlockList& b);
+
+private:
+    //! Is the list owning the blocks?
+    bool owner;
+    //! Blocks in the graphic
+    QList<RS_Block*> blocks;
+    //! List of registered BlockListListeners
+    QList<RS_BlockListListener*> blockListListeners;
+    //! Currently active block
+    RS_Block* activeBlock;
+    /** Flag set if the block list was modified and not yet saved. */
+    bool modified;
+};
+
+#endif