/// <summary>
/// Adds a tree item to the children of this tree item
/// <para>Use this method to handle select event in a proper way</para>
/// </summary>
/// <param name="child">child tree item to be added. Selected event handler will be automatically set</param>
public void AddChild(BaseTreeItemVm child)
{
//add the event handler to the new item
child.Selected += c =>
{
if (Selected != null) Selected(c);
};
Children.Add(child);
}
/// <summary>
/// Selects the given <see cref="BaseTreeItemVm"/> and changes the Content to show the skills about that <see cref="BaseTreeItemVm"/>
/// </summary>
/// <remarks>
/// This method will be called from the Selected event in each <see cref="BaseTreeItemVm"/>
/// <para>This method is using a timer to load content with a delay</para>
/// </remarks>
/// <param name="node">The node which skills will be shown</param>
public void SelectNode(BaseTreeItemVm node)
{
//exit if page is in Loading state
if (IsLoading) return;
IsLoading = true;
//load the content with a delay
if (_loadingTimer != null) _loadingTimer.Dispose();
_loadingTimer = new Timer(
o => {
Dispatcher.Invoke(() =>
{
//Reset the content to match the selected node
Content = new SkillCenterContentVm(node);
//prepare this page's Message to listen to errors of the Content
Content.ErrorOccured += msg => Message.AddEmbeddedException(msg);
IsLoading = false;
});
}
, null, _loadingTimerDelay, System.Threading.Timeout.Infinite);
}
/// <summary>
/// Instantiates an initializes this Vm with the given <see cref="BaseTreeItemVm"/> node
/// </summary>
/// <param name="node">A tree item that initializes the mode and data of this Vm</param>
public SkillCenterContentVm(BaseTreeItemVm node)
{
SelectedItem = node;
if (node is GeneralVm)
{
_targetMode = TargetMode.General;
}
else if (node is ProductGroupVm)
{
_targetMode = TargetMode.ProductGroup;
}
else if (node is ProductVm)
{
_targetMode = TargetMode.Product;
}
else if (node is ProductReworkVm)
{
_targetMode = TargetMode.ProductRework;
}
initializeData();
}