protected virtual void OnValueChanging(GenericChangeEventArgs <DateTime> e)
{
if (ValueChanging != null)
{
ValueChanging(this, e);
}
}
/// <summary>
/// Fires <see cref="ItemsChanging"/> event.
/// </summary>
/// <param name="index">Index of item being changed.</param>
/// <param name="e">Object containing event data.</param>
protected virtual void OnItemsChanging(int index, GenericChangeEventArgs <BarItem> e)
{
if (ItemsChanging != null)
{
ItemsChanging(index, e);
}
}
///<summary>
///Performs additional custom processes before setting a value in the <see cref="T:System.Collections.CollectionBase"></see> instance.
///</summary>
///
///<param name="oldValue">The value to replace with newValue.</param>
///<param name="newValue">The new value of the element at index.</param>
///<param name="index">The zero-based index at which oldValue can be found.</param>
protected override void OnSet(int index, object oldValue, object newValue)
{
GenericChangeEventArgs <T> e = new GenericChangeEventArgs <T>((T)oldValue, (T)newValue);
if (this.Changing != null)
{
this.Changing(index, e);
if (e.Cancel)
{
return;
}
}
base.OnSet(index, oldValue, newValue);
}
/// <summary>
/// Fires <see cref="SelectionChanged"/> event
/// </summary>
/// <param name="e">Object containing event data.</param>
protected virtual void OnSelectionChanging(GenericChangeEventArgs <BarItem> e)
{
if (SelectionChanging != null)
{
int indx = -1;
for (int i = 0; i < Items.Count; i++)
{
if (e.NewValue.Equals(Items[i]))
{
indx = i;
break;
}
}
SelectionChanging(indx, e);
}
}
private void UpdateSelected(DateTime newDate)
{
hoverDate = newDate;
var valChange = selectedDate != newDate && hoverDate != DateTime.MinValue;
if (valChange)
{
var args = new GenericChangeEventArgs <DateTime>(selectedDate, newDate, false);
OnValueChanging(args);
if (!args.Cancel)
{
selectedDate = newDate;
OnValueChanged();
}
}
Refresh();
Update();
}
internal bool OnSelectItem(BarItem item, bool value)
{
if (value)
{
var e2 = new GenericChangeEventArgs <BarItem>(SelectedItem, item);
OnSelectionChanging(e2);
if (e2.Cancel)
{
return(false);
}
for (var i = 0; i < items.Count; i++)
{
if (items[i] != item && items[i].Selected)
{
items[i].Selected = false;
}
}
var e = new GenericEventArgs <BarItem>(item);
OnSelectionChanged(e);
return(true);
}
return(false);
}
internal bool OnSelectItem(BarItem item, bool value)
{
if (value)
{
var e2 = new GenericChangeEventArgs<BarItem>(SelectedItem, item);
OnSelectionChanging(e2);
if (e2.Cancel)
return false;
for (var i = 0; i < items.Count; i++)
{
if (items[i] != item && items[i].Selected)
{
items[i].Selected = false;
}
}
var e = new GenericEventArgs<BarItem>(item);
OnSelectionChanged(e);
return true;
}
return false;
}
/// <summary>
/// Raises the <see cref="E:System.Windows.Forms.Control.KeyUp"/> event.
/// </summary>
/// <param name="e">A <see cref="T:System.Windows.Forms.KeyEventArgs"/> that contains the event data. </param>
protected override void OnKeyUp(KeyEventArgs e)
{
int dayAdvance = 0;
switch (e.KeyCode)
{
case Keys.Left:
dayAdvance = -1;
break;
case Keys.Up:
dayAdvance = (displayType == DisplayType.Dates) ? -NumCols : -4;
break;
case Keys.Right:
dayAdvance = 1;
break;
case Keys.Down:
dayAdvance = (displayType == DisplayType.Dates) ? NumCols : 4;
break;
}
if (dayAdvance != 0)
{
DateTime newDate = selectedDate;
if (displayType == DisplayType.Dates)
{
newDate = selectedDate.AddDays(dayAdvance);
}
if (displayType == DisplayType.Monthes)
{
newDate = selectedDate.AddMonths(dayAdvance);
}
if (displayType == DisplayType.Years)
{
newDate = selectedDate.AddYears(dayAdvance);
}
if (displayType == DisplayType.YearsRange)
{
newDate = selectedDate.AddYears(dayAdvance * 100 - 1);
}
if (selectedDate.Month != newDate.Month)
{
UpdateSelected(newDate);
}
else
{
Graphics g = CreateGraphics();
DrawDay(g, selectedDate, false);
DrawDay(g, newDate, true);
g.Dispose();
UpdateHoverCell(GetCellIndex(newDate));
if (selectedDate != newDate)
{
var args = new GenericChangeEventArgs <DateTime>(selectedDate, newDate, false);
OnValueChanging(args);
if (!args.Cancel)
{
selectedDate = newDate;
OnValueChanged();
Invalidate();
}
}
}
e.Handled = true;
}
if (e.KeyData == Keys.Enter)
{
if (displayType == DisplayType.YearsRange)
{
displayType = DisplayType.Years;
}
else if (displayType == DisplayType.Years)
{
displayType = DisplayType.Monthes;
}
else if (displayType == DisplayType.Monthes)
{
displayType = DisplayType.Dates;
}
Invalidate();
e.Handled = true;
}
if (e.KeyData == Keys.Space)
{
if (displayType == DisplayType.Dates)
{
displayType = DisplayType.Monthes;
}
else if (displayType == DisplayType.Monthes)
{
displayType = DisplayType.Years;
}
else if (displayType == DisplayType.Years)
{
displayType = DisplayType.YearsRange;
}
Invalidate();
e.Handled = true;
}
if (e.KeyCode == Keys.Escape && displayType != DisplayType.Dates)
{
displayType = DisplayType.Dates;
Invalidate();
e.Handled = true;
}
}
private void OnSelectionChanging(int index, GenericChangeEventArgs<BarItem> e)
{
e.Cancel = true;
}
/// <summary>
/// Fires <see cref="SelectionChanged"/> event
/// </summary>
/// <param name="e">Object containing event data.</param>
protected virtual void OnSelectionChanging(GenericChangeEventArgs<BarItem> e)
{
if (SelectionChanging != null)
{
int indx = -1;
for (int i = 0; i < Items.Count; i++)
{
if (e.NewValue.Equals(Items[i]))
{
indx = i;
break;
}
}
SelectionChanging(indx, e);
}
}
/// <summary>
/// Fires <see cref="ItemsChanging"/> event.
/// </summary>
/// <param name="index">Index of item being changed.</param>
/// <param name="e">Object containing event data.</param>
protected virtual void OnItemsChanging(int index, GenericChangeEventArgs<BarItem> e)
{
if (ItemsChanging != null)
{
ItemsChanging(index, e);
}
}
private void OnSelectionChanging(int index, GenericChangeEventArgs <BarItem> e)
{
e.Cancel = true;
}
