/// <summary>
/// Adds a filter to this collection.
/// </summary>
/// <param name="name">The name of the filter to add.</param>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/>.</param>
/// <returns>True if the filter was successfully added; otherwise false.</returns>
public bool AddFilter(string name, MapDrawFilterHelper filter)
{
// Validate the name
if (string.IsNullOrEmpty(name))
{
return(false);
}
// Validate the filter object
if (filter == null)
{
return(false);
}
// Check if the name is already in use
if (_filters.ContainsKey(name))
{
return(false);
}
// Add
_filters.Add(name, filter);
// Raise events
if (Added != null)
{
Added.Raise(this, new MapDrawFilterHelperCollectionEventArgs(name, filter));
}
return(true);
}
/// <summary>
/// Handles the Click event of the <see cref="btnAdd"/> control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
void btnAdd_Click(object sender, EventArgs e)
{
var c = Collection;
if (c == null)
{
return;
}
var name = string.Empty;
// Get the new filter's name
do
{
const string msgInitial = "Enter the name of the new filter.";
const string msgRetry = "A filter with that name already exists. Please try another name.";
name = InputBox.Show("New filter name", string.IsNullOrEmpty(name) ? msgInitial : msgRetry, name);
// User aborted
if (string.IsNullOrEmpty(name))
{
return;
}
}while (!string.IsNullOrEmpty(name) && c.TryGetFilter(name) != null);
// Create and add the new filter
var filter = new MapDrawFilterHelper();
if (c.AddFilter(name, filter))
{
// Select the new filter
lstItems.SelectedItem = filter;
}
}
/// <summary>
/// Reads a filter from an <see cref="IValueReader"/>.
/// </summary>
/// <param name="reader">The <see cref="IValueReader"/> to read from.</param>
/// <returns>The name of the filter and the filter object.</returns>
static KeyValuePair <string, MapDrawFilterHelper> ReadFilter(IValueReader reader)
{
var key = reader.ReadString(_filterKeyValueName);
var valueReader = reader.ReadNode(_filterValueValueName);
var value = new MapDrawFilterHelper(valueReader);
return(new KeyValuePair <string, MapDrawFilterHelper>(key, value));
}
/// <summary>
/// Tries to get a filter's name.
/// </summary>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/> to get the name of.</param>
/// <returns>The name of the <paramref name="filter"/>, or null if the <paramref name="filter"/> is invalid or is not
/// in this collection.</returns>
public string TryGetName(MapDrawFilterHelper filter)
{
if (filter == null)
{
return(null);
}
return(_filters.FirstOrDefault(x => x.Value == filter).Key);
}
/// <summary>
/// Gets the string to draw for a list item.
/// </summary>
/// <param name="x">The list item.</param>
/// <returns>The string to draw for a list item.</returns>
string GetDrawString(MapDrawFilterHelper x)
{
var c = Collection;
if (x == null)
return "[NULL]";
if (c == null)
return x.ToString();
else
return c.TryGetName(x) ?? x.ToString();
}
/// <summary>
/// Gets the string to draw for a list item.
/// </summary>
/// <param name="x">The list item.</param>
/// <returns>The string to draw for a list item.</returns>
string GetDrawString(MapDrawFilterHelper x)
{
var c = Collection;
if (x == null)
{
return("[NULL]");
}
if (c == null)
{
return(x.ToString());
}
else
{
return(c.TryGetName(x) ?? x.ToString());
}
}
/// <summary>
/// Adds a filter to this collection.
/// </summary>
/// <param name="name">The name of the filter to add.</param>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/>.</param>
/// <returns>True if the filter was successfully added; otherwise false.</returns>
public bool AddFilter(string name, MapDrawFilterHelper filter)
{
// Validate the name
if (string.IsNullOrEmpty(name))
return false;
// Validate the filter object
if (filter == null)
return false;
// Check if the name is already in use
if (_filters.ContainsKey(name))
return false;
// Add
_filters.Add(name, filter);
// Raise events
if (Added != null)
Added.Raise(this, new MapDrawFilterHelperCollectionEventArgs(name, filter));
return true;
}
/// <summary>
/// Initializes a new instance of the <see cref="MapDrawFilterHelperCollectionRenameEventArgs"/> class.
/// </summary>
/// <param name="filterName">The name of the filter.</param>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/>.</param>
/// <param name="oldName">The old name of the filter.</param>
public MapDrawFilterHelperCollectionRenameEventArgs(string filterName, MapDrawFilterHelper filter, string oldName)
: base(filterName, filter)
{
_oldName = oldName;
}
/// <summary>
/// Initializes a new instance of the <see cref="MapDrawFilterHelperCollectionRenameEventArgs"/> class.
/// </summary>
/// <param name="filterName">The name of the filter.</param>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/>.</param>
/// <param name="oldName">The old name of the filter.</param>
public MapDrawFilterHelperCollectionRenameEventArgs(string filterName, MapDrawFilterHelper filter, string oldName)
: base(filterName, filter)
{
_oldName = oldName;
}
/// <summary>
/// Initializes a new instance of the <see cref="MapDrawFilterHelperCollectionEventArgs"/> class.
/// </summary>
/// <param name="filterName">The name of the filter.</param>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/>.</param>
public MapDrawFilterHelperCollectionEventArgs(string filterName, MapDrawFilterHelper filter)
{
_filterName = filterName;
_filter = filter;
}
/// <summary>
/// Initializes a new instance of the <see cref="MapDrawFilterHelperCollectionEventArgs"/> class.
/// </summary>
/// <param name="filter">The name of the filter and the <see cref="MapDrawFilterHelper"/> itself.</param>
public MapDrawFilterHelperCollectionEventArgs(KeyValuePair<string, MapDrawFilterHelper> filter)
{
_filterName = filter.Key;
_filter = filter.Value;
}
/// <summary>
/// Handles the Click event of the <see cref="btnAdd"/> control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
void btnAdd_Click(object sender, EventArgs e)
{
var c = Collection;
if (c == null)
return;
var name = string.Empty;
// Get the new filter's name
do
{
const string msgInitial = "Enter the name of the new filter.";
const string msgRetry = "A filter with that name already exists. Please try another name.";
name = InputBox.Show("New filter name", string.IsNullOrEmpty(name) ? msgInitial : msgRetry, name);
// User aborted
if (string.IsNullOrEmpty(name))
return;
}
while (!string.IsNullOrEmpty(name) && c.TryGetFilter(name) != null);
// Create and add the new filter
var filter = new MapDrawFilterHelper();
if (c.AddFilter(name, filter))
{
// Select the new filter
lstItems.SelectedItem = filter;
}
}
/// <summary>
/// Reads a filter from an <see cref="IValueReader"/>.
/// </summary>
/// <param name="reader">The <see cref="IValueReader"/> to read from.</param>
/// <returns>The name of the filter and the filter object.</returns>
static KeyValuePair<string, MapDrawFilterHelper> ReadFilter(IValueReader reader)
{
var key = reader.ReadString(_filterKeyValueName);
var valueReader = reader.ReadNode(_filterValueValueName);
var value = new MapDrawFilterHelper(valueReader);
return new KeyValuePair<string, MapDrawFilterHelper>(key, value);
}
/// <summary>
/// Tries to get a filter's name.
/// </summary>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/> to get the name of.</param>
/// <returns>The name of the <paramref name="filter"/>, or null if the <paramref name="filter"/> is invalid or is not
/// in this collection.</returns>
public string TryGetName(MapDrawFilterHelper filter)
{
if (filter == null)
return null;
return _filters.FirstOrDefault(x => x.Value == filter).Key;
}
/// <summary>
/// Initializes a new instance of the <see cref="MapDrawFilterHelperCollectionEventArgs"/> class.
/// </summary>
/// <param name="filterName">The name of the filter.</param>
/// <param name="filter">The <see cref="MapDrawFilterHelper"/>.</param>
public MapDrawFilterHelperCollectionEventArgs(string filterName, MapDrawFilterHelper filter)
{
_filterName = filterName;
_filter = filter;
}
/// <summary>
/// Initializes a new instance of the <see cref="MapDrawFilterHelperCollectionEventArgs"/> class.
/// </summary>
/// <param name="filter">The name of the filter and the <see cref="MapDrawFilterHelper"/> itself.</param>
public MapDrawFilterHelperCollectionEventArgs(KeyValuePair <string, MapDrawFilterHelper> filter)
{
_filterName = filter.Key;
_filter = filter.Value;
}
