internal void UpdateSelectedIndex(LoopingListSelectionChangeReason reason)
{
int index = this.GetIndexFromCurrentValueForComponentType(this.componentType);
//Ensure that list is with valid count when swithcing between months with diferent number of days.
if (this.IsTemplateApplied && this.itemsPanel.VisualCount > 0)
{
this.UpdateLogicalCount(false);
this.UpdateListWithStep();
}
this.UpdateSelection(index, this.GetVisualIndex(index), reason);
}
/// <summary>
/// Applies the specified index as currently selected.
/// </summary>
/// <param name="newSelectedIndex">The desired selected index.</param>
/// <param name="reason">The reason of the change.</param>
internal virtual void UpdateSelection(int newSelectedIndex, LoopingListSelectionChangeReason reason)
{
if (this.selectedIndex == newSelectedIndex)
{
return;
}
if (!this.CanChangeSelectedIndex(newSelectedIndex))
{
this.selectionChangeReason = LoopingListSelectionChangeReason.PrivateNoNotify;
this.SetValue(SelectedIndexProperty, this.selectedIndex);
}
else
{
if (reason == LoopingListSelectionChangeReason.User)
{
this.selectionChangeReason = LoopingListSelectionChangeReason.Private;
}
else
{
this.selectionChangeReason = reason;
}
int oldIndex = this.selectedIndex;
// do the actual selection change
this.selectedIndex = newSelectedIndex;
this.SetValue(SelectedIndexProperty, newSelectedIndex);
// examine the selection change reason
switch (reason)
{
case LoopingListSelectionChangeReason.User:
case LoopingListSelectionChangeReason.Private:
case LoopingListSelectionChangeReason.PrivateNoNotify:
this.SelectCurrentItem();
break;
}
this.UpdateItemsIsSelectedState();
}
if (reason != LoopingListSelectionChangeReason.PrivateNoNotify)
{
this.RaiseSelectedIndexChanged();
}
this.selectionChangeReason = LoopingListSelectionChangeReason.User;
}
/// <summary>
/// Selects the specified visual item.
/// </summary>
/// <param name="item">The item to be selected.</param>
/// <param name="reason">The reason that caused the select request.</param>
internal virtual bool SelectItem(LoopingListItem item, LoopingListSelectionChangeReason reason)
{
if (!this.CanChangeSelectedIndex(item.LogicalIndex))
{
return(false);
}
if (!item.IsSelected)
{
// update the selected index
this.UpdateSelection(item.LogicalIndex, item.VisualIndex, reason);
}
else
{
this.UpdateItemsIsSelectedState();
}
return(true);
}
/// <inheritdoc />
internal override void UpdateSelection(int newSelectedLogicalIndex, int newSelectedVisualIndex, LoopingListSelectionChangeReason reason)
{
if (reason == LoopingListSelectionChangeReason.PrivateNoNotify)
{
if (!this.CanChangeSelectedIndex(newSelectedLogicalIndex))
{
newSelectedLogicalIndex++;
}
}
if (reason == LoopingListSelectionChangeReason.VisualItemClick ||
reason == LoopingListSelectionChangeReason.VisualItemSnappedToMiddle ||
reason == LoopingListSelectionChangeReason.Private ||
reason == LoopingListSelectionChangeReason.PrivateNoNotify)
{
this.UpdateValue(newSelectedLogicalIndex);
}
base.UpdateSelection(newSelectedLogicalIndex, newSelectedVisualIndex, reason);
}
/// <summary>
/// Applies the specified index as currently selected.
/// </summary>
/// <param name="newSelectedLogicalIndex">The desired selected logical index.</param>
/// <param name="newSelectedVisualIndex">The desired selected visual index.</param>
/// <param name="reason">The reason of the change.</param>
internal virtual void UpdateSelection(int newSelectedLogicalIndex, int newSelectedVisualIndex, LoopingListSelectionChangeReason reason)
{
if (this.selectedVisualIndex == newSelectedVisualIndex && this.selectedIndex == newSelectedLogicalIndex)
{
return;
}
if (!this.CanChangeSelectedIndex(newSelectedLogicalIndex))
{
this.selectionChangeReason = LoopingListSelectionChangeReason.PrivateNoNotify;
this.SetValue(SelectedIndexProperty, this.selectedIndex);
}
else
{
if (reason == LoopingListSelectionChangeReason.User)
{
this.selectionChangeReason = LoopingListSelectionChangeReason.Private;
}
else
{
this.selectionChangeReason = reason;
}
// do the actual selection change
this.selectedIndex = newSelectedLogicalIndex;
this.selectedVisualIndex = newSelectedVisualIndex;
this.SetValue(SelectedIndexProperty, newSelectedLogicalIndex);
// examine the selection change reason
switch (reason)
{
case LoopingListSelectionChangeReason.User:
case LoopingListSelectionChangeReason.Private:
case LoopingListSelectionChangeReason.PrivateNoNotify:
this.SelectCurrentItem();
break;
}
this.UpdateItemsIsSelectedState();
if (this.ItemsPanel != null)
{
var loopingListItem = this.ItemsPanel.ItemFromLogicalIndex(this.selectedIndex) as LoopingListItem;
if (loopingListItem != null)
{
loopingListItem.RaiseAutomationEvent(AutomationEvents.SelectionItemPatternOnElementAddedToSelection,
AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection,
AutomationEvents.SelectionItemPatternOnElementSelected,
AutomationEvents.SelectionPatternOnInvalidated,
AutomationEvents.AutomationFocusChanged);
}
}
}
if (reason != LoopingListSelectionChangeReason.PrivateNoNotify)
{
this.RaiseSelectedIndexChanged();
}
this.selectionChangeReason = LoopingListSelectionChangeReason.User;
}
