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authorAndrei Karas <akaras@inbox.ru>2011-05-30 20:09:31 +0300
committerAndrei Karas <akaras@inbox.ru>2011-05-30 20:09:31 +0300
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+/* _______ __ __ __ ______ __ __ _______ __ __
+ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
+ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
+ * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+ *
+ *
+ * Per Larsson a.k.a finalman
+ * Olof Naessén a.k.a jansem/yakslem
+ *
+ * Visit: http://guichan.sourceforge.net
+ *
+ * License: (BSD)
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name of Guichan nor the names of its contributors may
+ * be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef GCN_DROPDOWN_HPP
+#define GCN_DROPDOWN_HPP
+
+#include "guichan/actionlistener.hpp"
+#include "guichan/basiccontainer.hpp"
+#include "guichan/deathlistener.hpp"
+#include "guichan/focushandler.hpp"
+#include "guichan/focuslistener.hpp"
+#include "guichan/keylistener.hpp"
+#include "guichan/listmodel.hpp"
+#include "guichan/mouselistener.hpp"
+#include "guichan/platform.hpp"
+#include "guichan/selectionlistener.hpp"
+#include "guichan/widgets/listbox.hpp"
+#include "guichan/widgets/scrollarea.hpp"
+
+namespace gcn {
+ /**
+ * An implementation of a drop downable list from which an item can be
+ * selected. The drop down consists of an internal ScrollArea and an
+ * internal ListBox. The drop down also uses an internal FocusHandler to
+ * handle the focus of the internal ScollArea and the internal ListBox. The
+ * scroll area and the list box can be passed to the drop down if a custom
+ * scroll area and or a custom list box is preferable.
+ *
+ * To be able display a list the drop down uses a user provided list model.
+ * A list model can be any class that implements the ListModel interface.
+ *
+ * If an item is selected in the drop down a select event will be sent to
+ * all selection listeners of the drop down. If an item is selected by
+ * using a mouse click or by using the enter or space key an action event
+ * will be sent to all action listeners of the drop down.
+ */
+ class GCN_CORE_DECLSPEC DropDown :
+ public ActionListener,
+ public BasicContainer,
+ public KeyListener,
+ public MouseListener,
+ public FocusListener,
+ public SelectionListener
+ {
+ public:
+ /**
+ * Contructor.
+ *
+ * @param listModel the ListModel to use.
+ * @param scrollArea the ScrollArea to use.
+ * @param listBox the listBox to use.
+ * @see ListModel, ScrollArea, ListBox.
+ */
+ DropDown(ListModel *listModel = NULL,
+ ScrollArea *scrollArea = NULL,
+ ListBox *listBox = NULL);
+
+ /**
+ * Destructor.
+ */
+ virtual ~DropDown();
+
+ /**
+ * Gets the selected item as an index in the list model.
+ *
+ * @return the selected item as an index in the list model.
+ * @see setSelected
+ */
+ int getSelected() const;
+
+ /**
+ * Sets the selected item. The selected item is represented by
+ * an index from the list model.
+ *
+ * @param selected the selected item as an index from the list model.
+ * @see getSelected
+ */
+ void setSelected(int selected);
+
+ /**
+ * Sets the list model to use when displaying the list.
+ *
+ * @param listModel the list model to use.
+ * @see getListModel
+ */
+ void setListModel(ListModel *listModel);
+
+ /**
+ * Gets the list model used.
+ *
+ * @return the ListModel used.
+ * @see setListModel
+ */
+ ListModel *getListModel();
+
+ /**
+ * Adjusts the height of the drop down to fit the height of the
+ * drop down's parent's height. It's used to not make the drop down
+ * draw itself outside of it's parent if folded down.
+ */
+ void adjustHeight();
+
+ /**
+ * Adds a selection listener to the drop down. When the selection
+ * changes an event will be sent to all selection listeners of the
+ * drop down.
+ *
+ * If you delete your selection listener, be sure to also remove it
+ * using removeSelectionListener().
+ *
+ * @param selectionListener the selection listener to add.
+ * @since 0.8.0
+ */
+ void addSelectionListener(SelectionListener* selectionListener);
+
+ /**
+ * Removes a selection listener from the drop down.
+ *
+ * @param selectionListener the selection listener to remove.
+ * @since 0.8.0
+ */
+ void removeSelectionListener(SelectionListener* selectionListener);
+
+
+ // Inherited from Widget
+
+ virtual void draw(Graphics* graphics);
+
+ void setBaseColor(const Color& color);
+
+ void setBackgroundColor(const Color& color);
+
+ void setForegroundColor(const Color& color);
+
+ void setFont(Font *font);
+
+ void setSelectionColor(const Color& color);
+
+
+ // Inherited from BasicContainer
+
+ virtual Rectangle getChildrenArea();
+
+
+ // Inherited from FocusListener
+
+ virtual void focusLost(const Event& event);
+
+
+ // Inherited from ActionListener
+
+ virtual void action(const ActionEvent& actionEvent);
+
+
+ // Inherited from DeathListener
+
+ virtual void death(const Event& event);
+
+
+ // Inherited from KeyListener
+
+ virtual void keyPressed(KeyEvent& keyEvent);
+
+
+ // Inherited from MouseListener
+
+ virtual void mousePressed(MouseEvent& mouseEvent);
+
+ virtual void mouseReleased(MouseEvent& mouseEvent);
+
+ virtual void mouseWheelMovedUp(MouseEvent& mouseEvent);
+
+ virtual void mouseWheelMovedDown(MouseEvent& mouseEvent);
+
+ virtual void mouseDragged(MouseEvent& mouseEvent);
+
+
+ // Inherited from SelectionListener
+
+ virtual void valueChanged(const SelectionEvent& event);
+
+ protected:
+ /**
+ * Draws the button of the drop down.
+ *
+ * @param graphics a Graphics object to draw with.
+ */
+ virtual void drawButton(Graphics *graphics);
+
+ /**
+ * Sets the drop down to be dropped down.
+ */
+ virtual void dropDown();
+
+ /**
+ * Sets the drop down to be folded up.
+ */
+ virtual void foldUp();
+
+ /**
+ * Distributes a value changed event to all selection listeners
+ * of the drop down.
+ *
+ * @since 0.8.0
+ */
+ void distributeValueChangedEvent();
+
+ /**
+ * True if the drop down is dropped down, false otherwise.
+ */
+ bool mDroppedDown;
+
+ /**
+ * True if the drop down has been pushed with the mouse, false
+ * otherwise.
+ */
+ bool mPushed;
+
+ /**
+ * Holds what the height is if the drop down is folded up. Used when
+ * checking if the list of the drop down was clicked or if the upper
+ * part of the drop down was clicked on a mouse click.
+ */
+ int mFoldedUpHeight;
+
+ /**
+ * The scroll area used.
+ */
+ ScrollArea* mScrollArea;
+
+ /**
+ * The list box used.
+ */
+ ListBox* mListBox;
+
+ /**
+ * The internal focus handler used to keep track of focus for the
+ * internal list box.
+ */
+ FocusHandler mInternalFocusHandler;
+
+ /**
+ * True if an internal scroll area is used, false if a scroll area
+ * has been passed to the drop down which the drop down should not
+ * deleted in it's destructor.
+ */
+ bool mInternalScrollArea;
+
+ /**
+ * True if an internal list box is used, false if a list box
+ * has been passed to the drop down which the drop down should not
+ * deleted in it's destructor.
+ */
+ bool mInternalListBox;
+
+ /**
+ * True if the drop down is dragged.
+ */
+ bool mIsDragged;
+
+ /**
+ * Typedef.
+ */
+ typedef std::list<SelectionListener*> SelectionListenerList;
+
+ /**
+ * The selection listener's of the drop down.
+ */
+ SelectionListenerList mSelectionListeners;
+
+ /**
+ * Typedef.
+ */
+ typedef SelectionListenerList::iterator SelectionListenerIterator;
+ };
+}
+
+#endif // end GCN_DROPDOWN_HPP