//=------------------------------------------------------------------=
// OnRemove
//=------------------------------------------------------------------=
/// <summary>
/// The user has selected the "Remove" verb in the designer.
/// Remove the active TaskFrame.
/// </summary>
///
private void OnRemove(object sender, EventArgs e)
{
DesignerTransaction dt = null;
MemberDescriptor md;
IDesignerHost idh;
TaskPane tp;
//
// Make sure we have a task pane with some valid frames !!!
//
tp = (TaskPane)this.Component;
if (tp == null || this.m_lastFrameSelected == null || !tp.TaskFrames.Contains(this.m_lastFrameSelected))
{
return;
}
md = TypeDescriptor.GetProperties(this.Component)["Controls"];
//
// Get last selection taskframe.
//
//
// get the designer host
//
idh = (IDesignerHost)this.GetService(typeof(IDesignerHost));
if (idh != null)
{
try
{
try
{
dt = idh.CreateTransaction(TaskPaneMain.GetResourceManager().GetString("TaskPaneMiscTransR"));
RaiseComponentChanging(md);
}
catch (CheckoutException ex)
{
//
// If this was cancelled, then that's cool.
//
if (ex == CheckoutException.Canceled)
{
return;
}
throw ex;
}
idh.DestroyComponent(this.m_lastFrameSelected);
RaiseComponentChanged(md, null, null);
tp.Refresh();
}
finally
{
if (dt != null)
{
dt.Commit();
}
}
}
}
//=------------------------------------------------------------------=
// OnAdd
//=------------------------------------------------------------------=
/// <summary>
/// The user has selected the 'Add' verb in the designer. Go and
/// add a new TaskFrame to the TaskPane. This is surprisingly
/// complicated ...
/// </summary>
///
private void OnAdd(object sender, EventArgs e)
{
DesignerTransaction dt = null;
PropertyDescriptor pd;
MemberDescriptor md;
IDesignerHost idh;
TaskFrame tf;
TaskPane tp;
tp = (TaskPane)this.Component;
md = TypeDescriptor.GetProperties(this.Component)["Controls"];
idh = (IDesignerHost)this.GetService(typeof(IDesignerHost));
if (idh != null)
{
try
{
try
{
dt = idh.CreateTransaction(TaskPaneMain.GetResourceManager().GetString("TaskPaneMiscTransA"));
RaiseComponentChanging(md);
}
catch (CheckoutException ex)
{
//
// if it was cancelled, then we have no problem.
//
if (ex == CheckoutException.Canceled)
{
return;
}
//
// otherwise, rethrow the exception.
//
throw ex;
}
//
// create the new component, name it, and then add it.
//
tf = (TaskFrame)idh.CreateComponent(typeof(TaskFrame));
pd = TypeDescriptor.GetProperties(tf)["Name"];
if (pd != null && pd.PropertyType == typeof(string))
{
tf.Text = (string)pd.GetValue(tf);
}
tp.Controls.Add(tf);
//
// Finally, fire some more events...
//
RaiseComponentChanged(md, null, null);
}
finally
{
if (dt != null)
{
dt.Commit();
}
}
}
}
