private void OnOpeningContextMenu(object sender, CancelEventArgs e)
{
// Ignore call as view builder is already destructed
if (!IsDisposed && (_viewBuilder != null))
{
if (DesignMode)
{
// Never show the context menu at design time
e.Cancel = true;
}
else
{
// Get access to the menu items for selecting a page
KryptonContextMenu contextMenu = (KryptonContextMenu)sender;
// Kill any existing contents and add a items collection for the page entries
contextMenu.Items.Clear();
KryptonContextMenuItems contextMenuItems = new KryptonContextMenuItems();
contextMenu.Items.Add(contextMenuItems);
// Process each page for those that need adding to context strip
int menuItems = 0;
foreach (KryptonPage page in Pages)
{
// We always add the currently selected page and
// any other that is both visible and enabled
if ((page == SelectedPage) || (page.LastVisibleSet && page.Enabled))
{
// Add a vertical break after every 20 items
if ((menuItems > 0) && (menuItems % 20) == 0)
{
KryptonContextMenuSeparator vertBreak = new KryptonContextMenuSeparator();
vertBreak.Horizontal = false;
contextMenuItems.Items.Add(vertBreak);
}
// Create a menu item for the page
KryptonContextMenuItem pageMenuItem = new KryptonContextMenuItem(page.GetTextMapping(Button.ContextMenuMapText),
page.GetImageMapping(Button.ContextMenuMapImage),
new EventHandler(OnContextMenuClick));
// Should the item be enabled?
pageMenuItem.Enabled = page.Enabled;
// The selected page should be checked
pageMenuItem.Checked = (page == SelectedPage);
// Use tag to store a back reference to the page
pageMenuItem.Tag = page;
// Add to end of the strip
contextMenuItems.Items.Add(pageMenuItem);
menuItems++;
}
}
// Create the event arguments
ContextActionEventArgs cae = new ContextActionEventArgs(SelectedPage,
SelectedIndex,
Button.ContextButtonAction,
contextMenu);
if (ContextAction != null)
ContextAction(this, cae);
// Process the requested action
switch (cae.Action)
{
case ContextButtonAction.SelectPage:
// Do nothing, allow context menu to be shown
break;
default:
// Cancel the showing of the context menu
e.Cancel = true;
break;
}
}
}
}
private void kryptonNavigator1_ContextAction(object sender, ContextActionEventArgs e)
{
// Because the 'new page' item does not have any text we need to manually set the
// displayed text for 'new page' in the context menu strip, otherwise it will be blank
KryptonContextMenuItems items = (KryptonContextMenuItems)e.KryptonContextMenu.Items[0];
KryptonContextMenuItem item = (KryptonContextMenuItem)items.Items[items.Items.Count - 1];
item.Text = "New Page";
}
private void kryptonNavigator1_ContextAction(object sender, ContextActionEventArgs e)
{
AddOutput("ContextAction");
}