private void OnCheckedChanged(object sender, EventArgs e)
{
// Are we allowed to process the event?
if (!_ignoreEvents)
{
// Cast to the correct type
KryptonCheckButton checkedButton = (KryptonCheckButton)sender;
if (checkedButton.Checked)
{
// Uncheck the currently checked button
if (_checkedButton != null)
{
// Prevent processing events caused by ourself
_ignoreEvents = true;
_checkedButton.Checked = false;
_ignoreEvents = false;
}
// Remember the newly checked button
_checkedButton = checkedButton;
}
else
{
// No check button is checked anymore
_checkedButton = null;
}
// Generate event to show the value has changed
OnCheckedButtonChanged(EventArgs.Empty);
}
}
private void KryptonCheckButtonCollectionForm_Load(object sender, EventArgs e)
{
// Get access to the container of the check set
IContainer container = _checkSet.Container;
// Assuming we manage to find a container
if (container != null)
{
// Find all the check buttons inside the container
foreach (object obj in container.Components)
{
// We are only interested in check buttons
if (obj is KryptonCheckButton)
{
// Cast to the correct type
KryptonCheckButton checkButton = (KryptonCheckButton)obj;
// Add a new entry to the list box but only check it if
// it is already present in the check buttons collection
checkedListBox.Items.Add(new ListEntry(checkButton),
_checkSet.CheckButtons.Contains(checkButton));
}
}
}
}
private void CheckButtonAdded(KryptonCheckButton checkButton)
{
// If the incoming button is already checked
if (checkButton.Checked)
{
// If we already have a button checked
if (_checkedButton != null)
{
// Then uncheck the incoming button
checkButton.Checked = false;
}
else
{
// Remember this as the currently checked instance
_checkedButton = checkButton;
// Generate event to show the value has changed
OnCheckedButtonChanged(EventArgs.Empty);
}
}
// Need to monitor and control the change of checked state
checkButton.CheckedChanging += new CancelEventHandler(OnCheckedChanging);
checkButton.CheckedChanged += new EventHandler(OnCheckedChanged);
}
/// <summary>
/// Initialize a new instance of the KryptonCheckButtonActionList class.
/// </summary>
/// <param name="owner">Designer that owns this action list instance.</param>
public KryptonCheckButtonActionList(KryptonCheckButtonDesigner owner)
: base(owner)
{
// Remember the button instance
_checkButton = owner.Component as KryptonCheckButton;
// Assuming we were correctly passed an actual component...
if (_checkButton != null)
{
// Get access to the actual Orientation propertry
PropertyDescriptor checkedProp = TypeDescriptor.GetProperties(_checkButton)["Checked"];
// If we succeeded in getting the property
if (checkedProp != null)
{
// Decide on the next action to take given the current setting
if ((bool)checkedProp.GetValue(_checkButton))
{
_action = "Uncheck the button";
}
else
{
_action = "Check the button";
}
}
}
// Cache service used to notify when a property has changed
_service = (IComponentChangeService)GetService(typeof(IComponentChangeService));
}
private void OnCheckedChanging(object sender, CancelEventArgs e)
{
// Are we allowed to process the event?
if (!_ignoreEvents)
{
// Cast to the correct type
KryptonCheckButton checkedButton = (KryptonCheckButton)sender;
// Prevent the checked button becoming unchecked unless AllowUncheck is defined
e.Cancel = checkedButton.Checked && !AllowUncheck;
}
}
private void CheckButtonRemoved(KryptonCheckButton checkButton)
{
// Unhook from monitoring events
checkButton.CheckedChanging -= new CancelEventHandler(OnCheckedChanging);
checkButton.CheckedChanged -= new EventHandler(OnCheckedChanged);
// If the removed button is the currently checked one
if (_checkedButton == checkButton)
{
// Then we no longer have a currently checked button
_checkedButton = null;
// Generate event to show the value has changed
OnCheckedButtonChanged(EventArgs.Empty);
}
}
/// <summary>
/// Removes a KryptonCheckButton from the collection.
/// </summary>
/// <param name="checkButton">The KryptonCheckButton to remove.</param>
public void Remove(KryptonCheckButton checkButton)
{
Debug.Assert(checkButton != null);
if (checkButton == null)
{
throw new ArgumentNullException("checkButton");
}
if (!Contains(checkButton))
{
throw new ArgumentException("No matching reference to remove");
}
base.List.Remove(checkButton);
}
/// <summary>
/// Adds the specifies KryptonCheckButton to the collection.
/// </summary>
/// <param name="checkButton">The KryptonCheckButton object to add to the collection.</param>
/// <returns>The index of the new entry.</returns>
public int Add(KryptonCheckButton checkButton)
{
Debug.Assert(checkButton != null);
if (checkButton == null)
{
throw new ArgumentNullException("checkButton");
}
if (Contains(checkButton))
{
throw new ArgumentException("Reference already exists in the collection");
}
base.List.Add(checkButton);
return(base.List.Count - 1);
}
/// <summary>
/// Inserts a KryptonCheckButton reference into the collection at the specified location.
/// </summary>
/// <param name="index">Index of position to insert.</param>
/// <param name="checkButton">The KryptonCheckButton reference to insert.</param>
public void Insert(int index, KryptonCheckButton checkButton)
{
Debug.Assert(checkButton != null);
if (checkButton == null)
{
throw new ArgumentNullException("checkButton");
}
if ((index < 0) || (index > Count))
{
throw new ArgumentOutOfRangeException("index");
}
if (Contains(checkButton))
{
throw new ArgumentException("Reference already in collection");
}
base.List.Insert(index, checkButton);
}
/// <summary>
/// Determines whether a KryptonCheckButton is in the collection.
/// </summary>
/// <param name="checkButton">The KryptonCheckButton to locate in the collection.</param>
/// <returns>True if found in collection; otherwise false.</returns>
public bool Contains(KryptonCheckButton checkButton)
{
return(base.List.Contains(checkButton));
}
/// <summary>
/// Returns the index of the KryptonCheckButton reference.
/// </summary>
/// <param name="checkButton">The KryptonCheckButton to locate.</param>
/// <returns>Index of reference; otherwise -1.</returns>
public int IndexOf(KryptonCheckButton checkButton)
{
return(base.List.IndexOf(checkButton));
}
/// <summary>
/// Initialize a new instance of the ListEntry class.
/// </summary>
/// <param name="checkButton">CheckButton to encapsulate.</param>
public ListEntry(KryptonCheckButton checkButton)
{
Debug.Assert(checkButton != null);
_checkButton = checkButton;
}
