/// <summary>
/// Inicjalizuje pola rozwijanej listy. Ustawia odpowiednie szerokości kolumn.
/// </summary>
/// <returns>Lista zainicjowanych pól. Elementy listy zawierają długi i krótki opis danego pola.</returns>
private List<ComboBoxItem> InitializeItems()
{
List<ComboBoxItem> initializedItems = new List<ComboBoxItem>();
IDataBase dataBase = null;
int[] shortDescriptionWords = null;
switch (tableName)
{
case "Collector":
dataBase = new Collectors();
shortDescriptionWords = new int[] { 1, 2 };
widthsOfColumns = new int[7];
break;
case "Customer":
dataBase = new Customers();
shortDescriptionWords = new int[] { 1, 2 };
widthsOfColumns = new int[7];
break;
case "Area":
dataBase = new Areas();
shortDescriptionWords = new int[] { 1 };
widthsOfColumns = new int[3];
break;
case "Address":
dataBase = new Addresses();
shortDescriptionWords = new int[] { 1, 2, 3 };
widthsOfColumns = new int[4];
break;
}
List<string[]> itemList = dataBase.itemList;
System.Drawing.Graphics g = comboBox.CreateGraphics();
System.Drawing.Font f = comboBox.Font;
string[] nullList = new string[widthsOfColumns.Length];
for (int i = 0; i < nullList.Length; i++)
{
nullList[i] = String.Empty;
widthsOfColumns[i] = 0;
}
initializedItems.Add(new ComboBoxItem(nullList, new int[] { 0 }));
initializedItems.ElementAt(0).formattedLongItemDescription = String.Empty;
foreach (string[] item in itemList)
{
ComboBoxItem comboBoxItem = new ComboBoxItem(item, shortDescriptionWords);
for (int j = 0; j < widthsOfColumns.Length; j++)
{
int newWidth = Convert.ToInt32(g.MeasureString(comboBoxItem.fields.ElementAt(j), f).Width);
if (newWidth > widthsOfColumns[j])
widthsOfColumns[j] = newWidth;
}
initializedItems.Add(comboBoxItem);
}
return initializedItems;
}
/// <summary>
/// Znajduje na liście elementów obiektu obiekt będący odpowiednikiem zaznaczonego na rozwijanej liście rekordu.
/// </summary>
/// <param name="item">"Aktualnie badany element listy.</param>
/// <returns>true - badany obiekt jest poszukiwanym obiektem.</returns>
private bool FindItem(ComboBoxItem item)
{
if (comboBox.SelectedIndex >= 0 && comboBox.Items.Count > 0)
if (item.formattedLongItemDescription == comboBox.Items[comboBox.SelectedIndex].ToString())
return true;
return false;
}