/// <summary>
/// Unregisters from the grid columns events.
/// </summary>
private void UnregisterFromGridColumnsEvents()
{
if (this.mParentGridView != null)
{
this.mParentGridView.Synchronized -= this.OnGridViewSynchronized;
this.mParentGridView = null;
}
}
/// <summary>
/// Method called when the parent tree list view template is applied.
/// </summary>
internal void OnParentTreeListViewTemplateApplied()
{
if (this.Count > 0)
{
// Setting the grid view.
this.View = new ExtendedGridView();
// Synchronizing the grid view.
this.SynchronizeGridViewColumns();
}
}
/// <summary>
/// Inserts an item at the given index.
/// </summary>
/// <param name="pIndex">The index of the item.</param>
/// <param name="pItem">The item to insert.</param>
protected override void InsertItem(int pIndex, TreeListViewColumn pItem)
{
if (this.mOwner.InnerListView != null && this.Count == 0)
{
// The first column is added.
this.View = new ExtendedGridView();
}
// Calling base method.
base.InsertItem(pIndex, pItem);
// Synchronizing the grid view.
this.SynchronizeGridViewColumns();
}
/// <summary>
/// Removes the item stores at the given position.
/// </summary>
/// <param name="pIndex">The posiiton of the item to remove.</param>
protected override void RemoveItem(int pIndex)
{
if (this.mOwner.InnerListView != null && this.Count == 1)
{
// The last column is removed.
this.View = null;
}
// Calling base method.
base.RemoveItem(pIndex);
// Synchronizing the grid view.
this.SynchronizeGridViewColumns();
}
/// <summary>
/// Registers to the grid columns event.
/// </summary>
private void RegisterToGridColumnsEvents()
{
if (this.ParentTreeListView == null || this.ParentTreeListView.InnerListView == null)
{
return;
}
// Registers on the column changed event to update the decorator clip region.
this.mParentGridView = this.ParentTreeListView.InnerListView.View;
if (this.mParentGridView != null)
{
// Assure you remove a previously registered delegate if passing twice with non null model.
this.mParentGridView.Synchronized -= this.OnGridViewSynchronized;
this.mParentGridView.Synchronized += this.OnGridViewSynchronized;
}
}
/// <summary>
/// Called when the control template is applied.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
// Getting the parts from the control template.
this.InnerListView = this.GetTemplateChild(PART_ListView) as ExtendedListView;
this.mDefaultMessage = this.GetTemplateChild(PART_DefaultMessage) as Label;
if ( (this.InnerListView == null)
|| (this.mDefaultMessage == null)
)
{
throw new Exception("TreeListView control template not correctly defined.");
}
IsParentTreeMultiColumnsBehavior.SetIsParentTreeMultiColumns(this, false);
// Loading the view model.
this.LoadViewModel();
// Applying the selection option.
this.InnerListView.SelectionModel.SelectionOption = this.mPendingSelectionOption;
// Registering on the collection changed event for the selected and checked items.
this.InnerListView.SelectionModel.SelectionChanged += this.OnInnerListViewSelectionChanged;
this.InnerListView.CheckModel.ItemsViewModelToggled += this.OnInnerListItemsViewModelToggled;
this.InnerListView.ItemViewModelsAdded += this.OnInnerListViewItemViewModelsAdded;
this.InnerListView.ItemViewModelsRemoved += this.OnInnerListViewItemViewModelsRemoved;
this.InnerListView.ItemViewModelDoubleClicked += this.OnInnerListViewItemViewModelDoubleClicked;
// Setting the columns.
TreeListViewColumnCollection lCollection = TreeListView.GetColumnsCollection(this) as TreeListViewColumnCollection;
if (lCollection != null && lCollection.Count > 0)
{
// Creating the grid.
ExtendedGridView lGridView = new ExtendedGridView(this.mResources, this.MultiColumnsItemContainerDefaultStyleKey);
foreach (TreeListViewColumn lColumn in lCollection)
{
if (lCollection[0] == lColumn)
{
lGridView.SetFirstColumn(lColumn);
}
else
{
lGridView.AddColumn(lColumn);
}
}
// Setting the grid view to the inner list.
this.InnerListView.View = lGridView;
IsParentTreeMultiColumnsBehavior.SetIsParentTreeMultiColumns(this, true);
}
}