private void Handler_ComponentRemoving(object theSender, ComponentEventArgs theArgs)
{
if (!(theArgs.Component is Page))
{
return;
}
MultiLayerPanel aCtl = DesignedControl;
Page aPg = (Page)theArgs.Component;
if (!aCtl.Controls.Contains(aPg))
{
return;
}
IDesignerHost aHost = (IDesignerHost)GetService(typeof(IDesignerHost));
if (!inTransaction)
{
inTransaction = true;
DesignerTransactionUtility.DoInTransaction
(
aHost,
"MultiPaneControlRemoveComponent",
new TransactionAwareParammedMethod(Transaction_UpdateSelectedPage),
null
);
inTransaction = false;
}
else
{
Transaction_UpdateSelectedPage(aHost, null);
}
CheckVerbStatus();
}
private void Handler_RemovePage(object sender, EventArgs eevent)
{
MultiLayerPanel aCtl = DesignedControl;
if (aCtl == null)
{
return;
}
else if (aCtl.Controls.Count < 1)
{
return;
}
IDesignerHost aHost = (IDesignerHost)GetService(typeof(IDesignerHost));
if (aHost == null)
{
return;
}
inTransaction = true;
DesignerTransactionUtility.DoInTransaction
(
aHost,
"MultiPaneControlRemovePage",
new TransactionAwareParammedMethod(Transaction_RemovePage),
null
);
inTransaction = false;
}
public object CreateControlWithOnePage(IDesignerHost theHost, object theParam)
{
MultiLayerPanel aCtl = (MultiLayerPanel)theHost.CreateComponent(typeof(MultiLayerPanel));
Page aPg = (Page)theHost.CreateComponent(typeof(Page));
aCtl.Controls.Add(aPg);
return(new IComponent[] { aCtl });
}
private object Transaction_SetSelectedPageAsConcrete(IDesignerHost theHost, object theParam)
{
MultiLayerPanel aCtl = DesignedControl;
MemberDescriptor aMember_SelectedPage = TypeDescriptor.GetProperties(aCtl)["SelectedPage"];
RaiseComponentChanging(aMember_SelectedPage);
aCtl.SelectedPage = (Page)theParam;
RaiseComponentChanged(aMember_SelectedPage, null, null);
return(null);
}
private object Transaction_AddPage(IDesignerHost host, object param)
{
MultiLayerPanel ctl = DesignedControl;
Page newPage = (Page)host.CreateComponent(typeof(Page));
MemberDescriptor memControls = TypeDescriptor.GetProperties(ctl)["Controls"];
RaiseComponentChanging(memControls);
ctl.Controls.Add(newPage);
DesignerSelectedPage = newPage;
RaiseComponentChanged(memControls, null, null);
return(null);
}
private object Transaction_UpdateSelectedPage(IDesignerHost theHost, object theParam)
{
MultiLayerPanel aCtl = DesignedControl;
Page aPgTemp = selectedPage;
int aCurIndex = aCtl.Controls.IndexOf(selectedPage);
if (selectedPage == aCtl.SelectedPage)
{
MemberDescriptor aMember_SelectedPage = TypeDescriptor.GetProperties(aCtl)["SelectedPage"];
RaiseComponentChanging(aMember_SelectedPage);
if (aCtl.Controls.Count > 1)
{
if (aCurIndex == aCtl.Controls.Count - 1)
{
aCtl.SelectedPage = (Page)aCtl.Controls[aCurIndex - 1];
}
else
{
aCtl.SelectedPage = (Page)aCtl.Controls[aCurIndex + 1];
}
}
else
{
aCtl.SelectedPage = null;
}
RaiseComponentChanged(aMember_SelectedPage, null, null);
}
else
{
if (aCtl.Controls.Count > 1)
{
if (aCurIndex == aCtl.Controls.Count - 1)
{
DesignerSelectedPage = (Page)aCtl.Controls[aCurIndex - 1];
}
else
{
DesignerSelectedPage = (Page)aCtl.Controls[aCurIndex + 1];
}
}
else
{
DesignerSelectedPage = null;
}
}
return(null);
}
private object Transaction_RemovePage(IDesignerHost theHost, object theParam)
{
if (selectedPage == null)
{
return(null);
}
MultiLayerPanel aCtl = DesignedControl;
MemberDescriptor aMember_Controls = TypeDescriptor.GetProperties(aCtl)["Controls"];
RaiseComponentChanging(aMember_Controls);
try
{
theHost.DestroyComponent(selectedPage);
}
catch { }
RaiseComponentChanged(aMember_Controls, null, null);
return(null);
}
protected override void FillTreeWithData(Selector theSel,
ITypeDescriptorContext theCtx, IServiceProvider theProvider)
{
base.FillTreeWithData(theSel, theCtx, theProvider);
MultiLayerPanel aCtl = (MultiLayerPanel)theCtx.Instance;
foreach (Page aIt in aCtl.Controls)
{
SelectorNode aNd = new SelectorNode(aIt.Name, aIt);
theSel.Nodes.Add(aNd);
if (aIt == aCtl.SelectedPage)
{
theSel.SelectedNode = aNd;
}
}
}
protected override void OnDragOver(DragEventArgs theDragEvents)
{
MultiLayerPanel aCtl = DesignedControl;
Point pt = aCtl.PointToClient(new Point(theDragEvents.X, theDragEvents.Y));
if (!aCtl.DisplayRectangle.Contains(pt))
{
theDragEvents.Effect = DragDropEffects.None;
}
else
{
MultiPanePageDesigner aDsgn_Sel = GetSelectedPageDesigner();
if (aDsgn_Sel != null)
{
aDsgn_Sel.InternalOnDragOver(theDragEvents);
}
}
}
private void Handler_SelectionChanged(object sender, EventArgs e)
{
ISelectionService aSrv = (ISelectionService)GetService(typeof(ISelectionService));
if (aSrv == null)
{
return;
}
ICollection aSel = aSrv.GetSelectedComponents();
MultiLayerPanel aCtl = DesignedControl;
foreach (object aIt in aSel)
{
Page aPage = GetPageOfControl(aIt);
if ((aPage != null) && (aPage.Parent == aCtl))
{
DesignerSelectedPage = aPage;
break;
}
}
}
