protected virtual void OnItemsAdding(ItemsAddingEventArgs e)
{
if (this.ItemsAdding != null)
{
this.ItemsAdding(this, e);
}
}
/// <summary>
/// Inserts the given collection of model objects to this control at hte given location
/// </summary>
/// <param name="modelObjects">A collection of model objects</param>
/// <remarks>
/// <para>The added objects will appear in their correct sort position, if sorting
/// is active. Otherwise, they will appear at the given position of the list.</para>
/// <para>No check is performed to see if any of the objects are already in the ListView.</para>
/// <para>Null objects are silently ignored.</para>
/// </remarks>
public override void InsertObjects(int index, ICollection <object> modelObjects)
{
if (VirtualListDataSource == null)
{
return;
}
// Give the world a chance to cancel or change the added objects
ItemsAddingEventArgs args = new ItemsAddingEventArgs(index, modelObjects);
OnItemsAdding(args);
if (args.Canceled)
{
return;
}
try
{
BeginUpdate();
VirtualListDataSource.InsertObjects(index, args.ObjectsToAdd);
BuildList();
}
finally
{
EndUpdate();
}
}
/// <summary>
/// Add the given collection of model objects to this control.
/// </summary>
/// <param name="modelObjects">A collection of model objects</param>
/// <remarks>
/// <para>The added objects will appear in their correct sort position, if sorting
/// is active. Otherwise, they will appear at the end of the list.</para>
/// <para>No check is performed to see if any of the objects are already in the ListView.</para>
/// <para>Null objects are silently ignored.</para>
/// </remarks>
public override void AddObjects(ICollection modelObjects)
{
if (this.VirtualListDataSource == null)
{
return;
}
// Give the world a chance to cancel or change the added objects
ItemsAddingEventArgs args = new ItemsAddingEventArgs(modelObjects);
this.OnItemsAdding(args);
if (args.Canceled)
{
return;
}
try {
this.BeginUpdate();
this.VirtualListDataSource.AddObjects(args.ObjectsToAdd);
this.BuildList();
}
finally {
this.EndUpdate();
}
}
public override void AddObjects(ICollection modelObjects)
{
if (this.DataSource != null)
{
ItemsAddingEventArgs e = new ItemsAddingEventArgs(modelObjects);
this.OnItemsAdding(e);
if (!e.Canceled)
{
this.ClearCachedInfo();
this.DataSource.AddObjects(e.ObjectsToAdd);
base.Sort();
this.UpdateVirtualListSize();
}
}
}
/// <summary>
/// Add the given collection of model objects to this control.
/// </summary>
/// <param name="modelObjects">A collection of model objects</param>
/// <remarks>
/// <para>The added objects will appear in their correct sort position, if sorting
/// is active. Otherwise, they will appear at the end of the list.</para>
/// <para>No check is performed to see if any of the objects are already in the ListView.</para>
/// <para>Null objects are silently ignored.</para>
/// </remarks>
override public void AddObjects(ICollection modelObjects)
{
if (this.DataSource == null)
{
return;
}
// Give the world a chance to cancel or change the added objects
ItemsAddingEventArgs args = new ItemsAddingEventArgs(modelObjects);
this.OnItemsAdding(args);
if (args.Canceled)
{
return;
}
this.DataSource.AddObjects(args.ObjectsToAdd);
this.UpdateVirtualListSize();
}
/// <summary>
/// Add the given collection of model objects to this control.
/// </summary>
/// <param name="modelObjects">A collection of model objects</param>
/// <remarks>
/// <para>The added objects will appear in their correct sort position, if sorting
/// is active. Otherwise, they will appear at the end of the list.</para>
/// <para>No check is performed to see if any of the objects are already in the ListView.</para>
/// <para>Null objects are silently ignored.</para>
/// </remarks>
public override void AddObjects(ICollection modelObjects)
{
if (VirtualListDataSource == null)
{
return;
}
// Give the world a chance to cancel or change the added objects
var args = new ItemsAddingEventArgs(modelObjects);
OnItemsAdding(args);
if (args.Canceled)
{
return;
}
ClearCachedInfo();
VirtualListDataSource.AddObjects(args.ObjectsToAdd);
Sort();
UpdateVirtualListSize();
}
/// <summary>
/// Insert the given collection of objects before the given position
/// </summary>
/// <param name="index">Where to insert the objects</param>
/// <param name="modelObjects">The objects to be inserted</param>
/// <remarks>
/// <para>
/// This operation only makes sense of non-sorted, non-grouped
/// lists, since any subsequent sort/group operation will rearrange
/// the list.
/// </para>
/// <para>This method only works on ObjectListViews and FastObjectListViews.</para>
///</remarks>
public virtual void InsertObjects(int index, ICollection modelObjects)
{
if (this.InvokeRequired) {
this.Invoke((MethodInvoker)delegate() {
this.InsertObjects(index, modelObjects);
});
return;
}
if (modelObjects == null)
return;
this.BeginUpdate();
try {
// Give the world a chance to cancel or change the added objects
ItemsAddingEventArgs args = new ItemsAddingEventArgs(modelObjects);
this.OnItemsAdding(args);
if (args.Canceled)
return;
modelObjects = args.ObjectsToAdd;
this.TakeOwnershipOfObjects();
ArrayList ourObjects = ObjectListView.EnumerableToArray(this.Objects, false);
// If we are filtering the list, there is no way to efficiently
// insert the objects, so just put them into our collection and rebuild.
if (this.IsFiltering) {
ourObjects.InsertRange(index, modelObjects);
this.BuildList(true);
return;
}
this.ListViewItemSorter = null;
index = Math.Max(0, Math.Min(index, this.GetItemCount()));
int i = index;
foreach (object modelObject in modelObjects) {
if (modelObject != null) {
ourObjects.Insert(i, modelObject);
OLVListItem lvi = new OLVListItem(modelObject);
this.FillInValues(lvi, modelObject);
this.Items.Insert(i, lvi);
i++;
}
}
for (i = index; i < this.GetItemCount(); i++) {
OLVListItem lvi = this.GetItem(i);
this.SetSubItemImages(lvi.Index, lvi);
}
// Tell the world that the list has changed
this.OnItemsChanged(new ItemsChangedEventArgs());
} finally {
this.EndUpdate();
}
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected virtual void OnItemsAdding(ItemsAddingEventArgs e) {
if (this.ItemsAdding != null)
this.ItemsAdding(this, e);
}
/// <summary>
/// Add the given collection of model objects to this control.
/// </summary>
/// <param name="modelObjects">A collection of model objects</param>
/// <remarks>
/// <para>The added objects will appear in their correct sort position, if sorting
/// is active. Otherwise, they will appear at the end of the list.</para>
/// <para>No check is performed to see if any of the objects are already in the ListView.</para>
/// <para>Null objects are silently ignored.</para>
/// </remarks>
public override void AddObjects(ICollection modelObjects) {
if (this.VirtualListDataSource == null)
return;
// Give the world a chance to cancel or change the added objects
ItemsAddingEventArgs args = new ItemsAddingEventArgs(modelObjects);
this.OnItemsAdding(args);
if (args.Canceled)
return;
try {
this.BeginUpdate();
this.VirtualListDataSource.AddObjects(args.ObjectsToAdd);
this.BuildList();
}
finally {
this.EndUpdate();
}
}
/// <summary>
/// Add the given collection of model objects to this control.
/// </summary>
/// <param name="modelObjects">A collection of model objects</param>
/// <remarks>
/// <para>The added objects will appear in their correct sort position, if sorting
/// is active. Otherwise, they will appear at the end of the list.</para>
/// <para>No check is performed to see if any of the objects are already in the ListView.</para>
/// <para>Null objects are silently ignored.</para>
/// </remarks>
public override void AddObjects(ICollection modelObjects) {
if (this.VirtualListDataSource == null)
return;
// Give the world a chance to cancel or change the added objects
ItemsAddingEventArgs args = new ItemsAddingEventArgs(modelObjects);
this.OnItemsAdding(args);
if (args.Canceled)
return;
this.ClearCachedInfo();
this.VirtualListDataSource.AddObjects(args.ObjectsToAdd);
this.Sort();
this.UpdateVirtualListSize();
}
