282 lines
9.3 KiB
C++
282 lines
9.3 KiB
C++
/****************************************************************************
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* NxWidgets/libnxwidgets/include/ilistbox.hxx
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
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* me be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************
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*
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* Portions of this package derive from Woopsi (http://woopsi.org/) and
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* portions are original efforts. It is difficult to determine at this
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* point what parts are original efforts and which parts derive from Woopsi.
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* However, in any event, the work of Antony Dzeryn will be acknowledged
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* in most NxWidget files. Thanks Antony!
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*
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* Copyright (c) 2007-2011, Antony Dzeryn
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the names "Woopsi", "Simian Zombie" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Antony Dzeryn ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Antony Dzeryn BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_ILISTBOX_HXX
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#define __INCLUDE_ILISTBOX_HXX
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <nuttx/nx/nxglib.h>
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#include "clistboxdataitem.hxx"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Abstract Base Classes
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****************************************************************************/
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#if defined(__cplusplus)
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namespace NXWidgets
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{
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/**
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* Defines the interface for ListBox classes.
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*/
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class IListBox
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{
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public:
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/**
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* A virtual destructor is required in order to override the IListBox
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* destructor. We do this because if we delete IListBox, we want the
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* destructor of the class that inherits from IListBox to run, not this
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* one.
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*/
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virtual ~IListBox(void) { }
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/**
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* Add a new option to the widget using default colors.
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*
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* @param text Text to show in the option.
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* @param value The value of the option.
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*/
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virtual void addOption(const CNxString &text, const uint32_t value) = 0;
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/**
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* Add an option to the widget.
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*
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* @param option The option to add.
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*/
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virtual void addOption(CListBoxDataItem *option) = 0;
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/**
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* Remove an option from the widget by its index.
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*
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* @param index The index of the option to remove.
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*/
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virtual void removeOption(const int index) = 0;
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/**
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* Remove all options from the widget.
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*/
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virtual void removeAllOptions(void) = 0;
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/**
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* Add a new option to the widget.
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*
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* @param text Text to show in the option.
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* @param value The value of the option.
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* @param normalTextColor Color to draw the text with when not selected.
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* @param normalBackColor Color to draw the background with when not selected.
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* @param selectedTextColor Color to draw the text with when selected.
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* @param selectedBackColor Color to draw the background with when selected.
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*/
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virtual void addOption(const CNxString &text, const uint32_t value,
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const nxwidget_pixel_t normalTextColor,
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const nxwidget_pixel_t normalBackColor,
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const nxwidget_pixel_t selectedTextColor,
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const nxwidget_pixel_t selectedBackColor) = 0;
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/**
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* Select an option by its index.
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* Redraws the widget and raises a value changed event.
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*
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* @param index The index of the option to select.
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*/
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virtual void selectOption(const int index) = 0;
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/**
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* Select an option by its index.
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* Redraws the widget and raises a value changed event.
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*
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* @param index The index of the option to select.
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*/
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virtual void deselectOption(const int index) = 0;
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/**
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* Select all options. Does nothing if the listbox does not allow
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* multiple selections. Redraws the widget and raises a value
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* changed event.
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*/
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virtual void selectAllOptions(void) = 0;
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/**
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* Deselect all options.
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* Redraws the widget and raises a value changed event.
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*/
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virtual void deselectAllOptions(void) = 0;
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/**
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* Get the selected index. Returns -1 if nothing is selected. If more than one
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* option is selected, the index of the first selected option is returned.
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*
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* @return The selected index.
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*/
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virtual const int getSelectedIndex(void) const = 0;
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/**
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* Sets the selected index. Specify -1 to select nothing. Resets any
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* other selected options to deselected.
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* Redraws the widget and raises a value changed event.
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*
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* @param index The selected index.
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*/
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virtual void setSelectedIndex(const int index) = 0;
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/**
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* Get the selected option. Returns NULL if nothing is selected.
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*
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* @return The selected option.
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*/
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virtual const CListBoxDataItem *getSelectedOption(void) const = 0;
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/**
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* Sets whether multiple selections are possible or not.
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*
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* @param allowMultipleSelections True to allow multiple selections.
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*/
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virtual void setAllowMultipleSelections(const bool allowMultipleSelections) = 0;
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/**
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* Sets whether multiple selections are possible or not.
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*
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* @return True if multiple selections are allowed.
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*/
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virtual const bool allowsMultipleSelections(void) const = 0;
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/**
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* Get the specified option.
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*
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* @return The specified option.
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*/
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virtual const CListBoxDataItem *getOption(const int index) = 0;
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/**
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* Sort the options alphabetically by the text of the options.
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*/
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virtual void sort(void) = 0;
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/**
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* Get the total number of options.
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*
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* @return The number of options.
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*/
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virtual const int getOptionCount(void) const = 0;
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/**
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* Get the height of a single option.
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*
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* @return The height of an option.
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*/
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virtual const nxgl_coord_t getOptionHeight(void) const = 0;
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/**
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* Sets whether or not items added to the list are automatically sorted on insert or not.
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*
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* @param sortInsertedItems True to enable sort on insertion.
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*/
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virtual void setSortInsertedItems(const bool sortInsertedItems) = 0;
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};
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}
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#endif // __cplusplus
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#endif // __INCLUDE_ILISTBOX_HXX
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