protected virtual void MoveTab(TabPanel from, TabPanel to)
{
if (!(this.Control is TabView))
{
return;
}
if (from == null || to == null ||
!this.Control.Controls.Contains(from) ||
!this.Control.Controls.Contains(to))
{
return;
}
IDesignerHost designerHost = (IDesignerHost)this.GetService(typeof(IDesignerHost));
TabView tabView = this.Control as TabView;
if (designerHost == null)
{
return;
}
using (DesignerTransaction transaction = designerHost.CreateTransaction($"Add tab to \"{tabView.Name}\""))
{
try
{
PropertyDescriptor controlsProperty = TypeDescriptor.GetProperties(tabView)[nameof(tabView.Controls)];
this.RaiseComponentChanging(controlsProperty);
this.Control.Controls.SetChildIndex(from, Control.Controls.GetChildIndex(to));
this.RaiseComponentChanged(controlsProperty, null, null);
tabView.UpdateLayout();
tabView.Refresh();
transaction.Commit();
}
catch
{
transaction.Cancel();
}
}
}
protected virtual void RemoveTab()
{
if (!(this.Control is TabView))
{
return;
}
IDesignerHost designerHost = (IDesignerHost)this.GetService(typeof(IDesignerHost));
TabView tabView = this.Control as TabView;
TabPanel tabPanel = null;
if (tabView.SelectedTab != null)
{
tabPanel = tabView.SelectedTab;
}
if (designerHost == null || tabPanel == null)
{
return;
}
using (DesignerTransaction transaction = designerHost.CreateTransaction($"Remove tab from \"{tabView.Name}\""))
{
try
{
PropertyDescriptor controlsProperty = TypeDescriptor.GetProperties(tabView)[nameof(tabView.Controls)];
this.RaiseComponentChanging(controlsProperty);
designerHost.DestroyComponent(tabPanel);
this.RaiseComponentChanged(controlsProperty, null, null);
tabView.UpdateLayout();
tabView.Refresh();
transaction.Commit();
}
catch
{
transaction.Cancel();
}
}
}
protected virtual void AddTab()
{
if (!(this.Control is TabView))
{
return;
}
IDesignerHost designerHost = (IDesignerHost)this.GetService(typeof(IDesignerHost));
TabView tabView = this.Control as TabView;
if (designerHost == null)
{
return;
}
using (DesignerTransaction transaction = designerHost.CreateTransaction($"Add tab to \"{tabView.Name}\""))
{
try
{
TabPanel tab = (TabPanel)designerHost.CreateComponent(typeof(TabPanel));
PropertyDescriptor controlsProperty = TypeDescriptor.GetProperties(tabView)[nameof(tabView.Controls)];
PropertyDescriptor tabTextProperty = TypeDescriptor.GetProperties(tab)[nameof(tab.Text)];
this.RaiseComponentChanging(controlsProperty);
tabView.Controls.Add(tab);
this.RaiseComponentChanged(controlsProperty, null, null);
tabTextProperty.SetValue(tab, tab.Name);
tabView.ShowTab(tab);
tabView.UpdateLayout();
tabView.Refresh();
transaction.Commit();
}
catch
{
transaction.Cancel();
}
}
}
