First check-in of NxWidgets

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4505 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 462 insertions, 0 deletions

diff --git a/NxWidgets/libnxwidgets/src/clistdata.cxx b/NxWidgets/libnxwidgets/src/clistdata.cxx
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+/****************************************************************************

+ * NxWidgets/libnxwidgets/src/clistdata.cxx

+ *

+ *   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.

+ *

+ ****************************************************************************/

+

+/****************************************************************************

+ * Included Files

+ ****************************************************************************/

+ 

+#include <nuttx/config.h>

+

+#include <stdint.h>

+#include <stdbool.h>

+#include <cstring>

+

+#include "clistdata.hxx"

+#include "ilistdataeventhandler.hxx"

+

+/****************************************************************************

+ * Pre-Processor Definitions

+ ****************************************************************************/

+

+/****************************************************************************

+ * Method Implementations

+ ****************************************************************************/

+

+using namespace NXWidgets;

+

+/**

+ * Constructor.

+ */

+

+CListData::CListData(void)

+{

+  m_allowMultipleSelections = true;

+  m_sortInsertedItems      = false;

+}

+

+/**

+ * Destructor.

+ */

+

+CListData::~CListData(void)

+{

+  removeAllItems();

+}

+

+/**

+ * Add a new item.

+ *

+ * @param text Text to show in the option.

+ * @param value The value of the option.

+ */

+

+void CListData::addItem(const CNxString &text, const uint32_t value)

+{

+  // Create new option

+

+  addItem(new CListDataItem(text, value));

+}

+

+/**

+ * Add an existing item.  CListData becomes the owner of the option and will delete it

+ * when the list is deleted.

+ *

+ * @param item The item to add.

+ */

+

+void CListData::addItem(CListDataItem *item)

+{

+  // Determine insert type

+

+  if (m_sortInsertedItems)

+    {

+      // Sorted insert

+

+      m_items.insert(getSortedInsertionIndex(item), item);

+    }

+  else

+    {

+      // Append

+

+      m_items.push_back(item);

+    }

+

+  raiseDataChangedEvent();

+}

+

+/**

+ * Remove an item by its index.

+ *

+ * @param index The index of the option to remove.

+ */

+

+void CListData::removeItem(const int index)

+{

+  // Bounds check

+

+  if (index < m_items.size())

+    {

+      // Delete the option

+

+      delete m_items[index];

+

+      // Erase the option from the list

+

+      m_items.erase(index);

+      raiseDataChangedEvent();

+    }

+}

+

+/**

+ * Select an item by its index.

+ *

+ * @param index The index of the item to select.

+ */

+

+void CListData::selectItem(const int index)

+{

+  setItemSelected(index, true);

+}

+

+/**

+ * Deselect an item by its index.

+ *

+ * @param index The index of the item to select.

+ */

+

+void CListData::deselectItem(const int index)

+{

+  setItemSelected(index, false);

+}

+

+/**

+ * Remove all items.

+ */

+

+void CListData::removeAllItems(void)

+{

+  // Delete all option data

+

+  for (int i = 0; i < m_items.size(); i++)

+    {

+      delete m_items[i];

+    }

+  

+  m_items.clear();

+  raiseDataChangedEvent();

+}

+

+/**

+ * Get the selected index.  Returns -1 if nothing is selected.  If more than one

+ * item is selected, the index of the first selected item is returned.

+ *

+ * @return The selected index.

+ */

+

+const int CListData::getSelectedIndex(void) const

+{

+  // Get the first selected index

+

+  for (int i = 0; i < m_items.size(); i++)

+    {

+      if (m_items[i]->isSelected())

+        {

+          return i;

+        }

+    }

+  

+  return -1;

+}

+

+/**

+ * Sets the selected index.  Specify -1 to select nothing.  Resets any

+ * other selected items to deselected.

+ *

+ * @param index The selected index.

+ */

+

+void CListData::setSelectedIndex(const int index)

+{

+  setItemSelected(index, true);

+}

+

+/**

+ * Get the selected item.  Returns NULL if nothing is selected.

+ *

+ * @return The selected option.

+ */

+

+const CListDataItem *CListData::getSelectedItem(void) const

+{

+  // Get the first selected option

+

+  int index = getSelectedIndex();

+  if (index > -1)

+    {

+      return m_items[index];

+    }

+  return (CListDataItem *)NULL;

+}

+

+/**

+ * Sort the items using their compareTo() methods.

+ */

+

+void CListData::sort(void)

+{

+  quickSort(0, m_items.size() - 1);

+  raiseDataChangedEvent();

+}

+

+/**

+ * Select all items.  Does nothing if the list does not allow

+ * multiple selections.

+ */

+

+void CListData::selectAllItems(void)

+{

+  if (m_allowMultipleSelections)

+    {

+      for (int i = 0; i < m_items.size(); i++)

+        {

+          m_items[i]->setSelected(true);

+        }

+

+      raiseSelectionChangedEvent();

+    }

+}

+

+/**

+ * Deselect all items.

+ */

+

+void CListData::deselectAllItems(void)

+{

+  for (int i = 0; i < m_items.size(); i++)

+    {

+      m_items[i]->setSelected(false);

+    }

+

+  raiseSelectionChangedEvent();

+}

+

+/**

+ * Select or deselect an item by its index.  Does not deselect any

+ * other selected items. Set index to -1 to select nothing.

+ *

+ * @param index The index of the item to select.

+ * @param selected True to select the item, false to deselect it.

+ */

+

+void CListData::setItemSelected(const int index, bool selected)

+{

+  // Deselect old options if we're making an option selected and

+  // we're not a multiple list

+

+  if (((!m_allowMultipleSelections) || (index == -1)) && (selected))

+    {

+      for (int i = 0; i < m_items.size(); i++)

+        {

+          m_items[i]->setSelected(false);

+        }

+    }

+

+  // Select or deselect the new option

+

+  if ((index > -1) && (index < m_items.size()))

+    {

+      m_items[index]->setSelected(selected);

+    }

+

+  raiseSelectionChangedEvent();

+}

+

+/**

+ * Remove an event handler.

+ *

+ * @param eventHandler The event handler to remove.

+ */

+

+void CListData::removeListDataEventHandler(IListDataEventHandler *eventHandler)

+{

+  for (int i = 0; i < m_listDataEventhandlers.size(); ++i)

+    {

+      if (m_listDataEventhandlers.at(i) == eventHandler)

+        {

+          m_listDataEventhandlers.erase(i);

+          return;

+        }

+    }

+}

+

+/**

+ * Quick sort the items using their compareTo() methods.

+ *

+ * @param start The index to start sorting at.

+ * @param end The index to stop sorting at.

+ */

+

+void CListData::quickSort(const int start, const int end)

+{

+  if (end > start)

+    {

+      int left = start;

+      int right = end;

+

+      CListDataItem *pivot = m_items[(start + end) >> 1];

+

+      do

+        {

+          while ((pivot->compareTo(m_items[left]) > 0) && (left < end))

+            {

+              left++;

+            }

+

+          while ((pivot->compareTo(m_items[right]) < 0) && (right > start))

+            {

+              right--;

+            }

+

+          if (left > right)

+            {

+              break;

+            }

+

+         swapItems(left, right);

+         left++;

+         right--;

+        }

+      while (left <= right);

+

+      quickSort(start, right);

+      quickSort(left, end);

+    }

+}

+

+/**

+ * Swap the locations of two items in the array.

+ *

+ * @param index1 The index of the first item to swap.

+ * @param index2 The index of the second item to swap.

+ */

+

+void CListData::swapItems(const int index1, const int index2)

+{

+  CListDataItem *tmp = m_items[index1];

+  m_items[index1]    = m_items[index2];

+  m_items[index2]    = tmp;

+}

+

+/**

+ * Return the index that an item should be inserted at to maintain a sorted list of data.

+ *

+ * @param item The item to insert.

+ * @return The index that the item should be imserted into at.

+ */

+

+const int CListData::getSortedInsertionIndex(const CListDataItem *item) const

+{

+  int i = 0;

+

+  // Locate slot where new option should go

+

+  while ((i < m_items.size()) && (item->compareTo(m_items[i]) > 0))

+    {

+      i++;

+    }

+  return i;

+}

+

+/**

+ * Raise a data changed event.

+ */

+

+void CListData::raiseDataChangedEvent(void)

+{

+  CListDataEventArgs eventArgs(this);

+

+  for (int i = 0; i < m_listDataEventhandlers.size(); ++i)

+    {

+      m_listDataEventhandlers.at(i)->handleListDataChangedEvent(eventArgs);

+    }

+}

+

+/**

+ * Raise a selection changed event.

+ */

+

+void CListData::raiseSelectionChangedEvent(void)

+{

+  CListDataEventArgs eventArgs(this);

+

+  for (int i = 0; i < m_listDataEventhandlers.size(); ++i)

+    {

+      m_listDataEventhandlers.at(i)->handleListDataSelectionChangedEvent(eventArgs);

+    }

+}