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px4_autopilot/NxWidgets/libnxwidgets/include/cwidgeteventhandlerlist.hxx

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/****************************************************************************
* NxWidgets/libnxwidgets/include/cwidgeteventhandlerlist.hxx
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 NuttX, NxWidgets, nor the names of its contributors
* me 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.
*
****************************************************************************
*
* Portions of this package derive from Woopsi (http://woopsi.org/) and
* portions are original efforts. It is difficult to determine at this
* point what parts are original efforts and which parts derive from Woopsi.
* However, in any event, the work of Antony Dzeryn will be acknowledged
* in most NxWidget files. Thanks Antony!
*
* Copyright (c) 2007-2011, Antony Dzeryn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the names "Woopsi", "Simian Zombie" 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 Antony Dzeryn ``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 Antony Dzeryn 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 __INCLUDE_CWIDGETEVENTHANDLERLIST_HXX
#define __INCLUDE_CWIDGETEVENTHANDLERLIST_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/nx/nxglib.h>
#include "cwidgeteventhandler.hxx"
#include "tnxarray.hxx"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Implementation Classes
****************************************************************************/
#if defined(__cplusplus)
namespace NXWidgets
{
class CNxWidget;
class CListDataItem;
/**
* List of widget event handlers.
*/
class CWidgetEventHandlerList
{
protected:
TNxArray<CWidgetEventHandler*> m_widgetEventHandlers; /**< List of event handlers */
CNxWidget *m_widget; /**< Owning widget */
bool m_isEnabled; /**< Indicates if events are active */
public:
/**
* Constructor.
*
* @param widget The owning widget.
*/
CWidgetEventHandlerList(CNxWidget *widget);
/**
* Destructor.
*/
~CWidgetEventHandlerList(void) { }
/**
* Check if the object raises events or not.
*
* @return True if events are enabled.
*/
bool isEnabled(void) const;
/**
* Get the event handler at the specified index.
*
* @param index The index of the event handler.
* @return The event handler at the specified index.
*/
inline CWidgetEventHandler *at(int index) const
{
return m_widgetEventHandlers.at(index);
}
/**
* Get the size of the array.
*
* @return The size of the array.
*/
inline nxgl_coord_t size(void) const
{
return m_widgetEventHandlers.size();
}
/**
* Adds a widget event handler. The event handler will receive
* all events raised by this object.
* @param eventHandler A pointer to the event handler.
*/
void addWidgetEventHandler(CWidgetEventHandler *eventHandler);
/**
* Remove a widget event handler.
*
* @param eventHandler A pointer to the event handler to remove.
*/
void removeWidgetEventHandler(CWidgetEventHandler *eventHandler);
/**
* Enables event raising.
*/
inline void enable(void)
{
m_isEnabled = true;
}
/**
* Disables event raising.
*/
inline void disable(void)
{
m_isEnabled = false;
}
/**
* Raise a click event to the event handler.
*
* @param x The x coordinate of the click.
* @param y The y coordinate of the click.
*/
void raiseClickEvent(nxgl_coord_t x, nxgl_coord_t y);
/**
* Raise a double-click event to the event handler.
*
* @param x The x coordinate of the click.
* @param y The y coordinate of the click.
*/
void raiseDoubleClickEvent(nxgl_coord_t x, nxgl_coord_t y);
/**
* Raise a mouse release event to the event handler.
*
* @param x The x coordinate of the release.
* @param y The y coordinate of the release.
*/
void raiseReleaseEvent(nxgl_coord_t x, nxgl_coord_t y);
/**
* Raise a mouse release-outside event to the event handler.
*
* @param x The x coordinate of the release.
* @param y The y coordinate of the release.
*/
void raiseReleaseOutsideEvent(nxgl_coord_t x, nxgl_coord_t y);
/**
* Raise a mouse drag event to the event handler.
*
* @param x The x coordinate of the mouse when the drag started.
* @param y The y coordinate of the mouse when the drag started.
* @param vX The horizontal distance dragged.
* @param vY The vertical distance dragged.
*/
void raiseDragEvent(nxgl_coord_t x, nxgl_coord_t y,
nxgl_coord_t vX, nxgl_coord_t vY);
/**
* Raise a widget drop event to the event handler.
*
* @param x The x coordinate of the mouse when the drop occurred.
* @param y The y coordinate of the mouse when the drop occurred.
*/
void raiseDropEvent(nxgl_coord_t x, nxgl_coord_t y);
/**
* Raise a key press event to the event handler.
*
* @param key The character code of the key that caused the event.
*/
void raiseKeyPressEvent(nxwidget_char_t key);
/**
* Raise a cursor control event to the event handler.
*
* @param cursorControl The cursor control code that caused the event.
*/
void raiseCursorControlEvent(ECursorControl cursorControl);
/**
* Raise a focus event to the event handler.
*/
void raiseFocusEvent(void);
/**
* Raise a blur event to the event handler.
*/
void raiseBlurEvent(void);
/**
* Raise a close event to the event handler.
*/
void raiseCloseEvent(void);
/**
* Raise a hide event to the event handler.
*/
void raiseHideEvent(void);
/**
* Raise a show event to the event handler.
*/
void raiseShowEvent(void);
/**
* Raise an enable event to the event handler.
*/
void raiseEnableEvent(void);
/**
* Raise a disable event to the event handler.
*/
void raiseDisableEvent(void);
/**
* Raise a value change event to the event handler.
*/
void raiseValueChangeEvent(void);
/**
* Raise a resize event to the event handler.
*
* @param width The new width of the widget.
* @param height The new height of the widget.
*/
void raiseResizeEvent(nxgl_coord_t width, nxgl_coord_t height);
/**
* Raise a move event to the event handler.
*
* @param x The new x coordinate of the widget.
* @param y The new y coordinate of the widget.
* @param vX The horizontal distance moved.
* @param vY The vertical distance moved.
*/
void raiseMoveEvent(nxgl_coord_t x, nxgl_coord_t y,
nxgl_coord_t vX, nxgl_coord_t vY);
/**
* Raise an action event to the event handler. This should be called
* when a widget's purpose has been fulfilled. For example, in the case
* of a button, this event is raised when the button is released within
* its boundaries. The button has produced a valid click, and thus
* fulfilled its purpose, so it needs to raise an "action" event.
*/
void raiseActionEvent(void);
/**
* Raises a scroll event. Fired when the panel scrolls.
*
* @param vX Horizontal distance scrolled.
* @param vY Vertical distance scrolled.
*/
void raiseScrollEvent(nxgl_coord_t vX, nxgl_coord_t vY);
};
}
#endif // __cplusplus
#endif // __INCLUDE_CWIDGETEVENTHANDLERLIST_HXX