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Diffstat (limited to 'src/guichan/widgets/dropdown.hpp')
| -rw-r--r-- | src/guichan/widgets/dropdown.hpp | 318 |
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diff --git a/src/guichan/widgets/dropdown.hpp b/src/guichan/widgets/dropdown.hpp new file mode 100644 index 000000000..090fff0ce --- /dev/null +++ b/src/guichan/widgets/dropdown.hpp @@ -0,0 +1,318 @@ +/* _______ __ __ __ ______ __ __ _______ __ __ + * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ + * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / + * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / + * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / + * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / + * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ + * + * 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 |