MenuItemContext InitializeMainSubMenu(MenuItem menuItem, MenuMD md, IInputElement commandTarget)
{
Reinitialize(menuItem);
var guid = new Guid(md.Metadata.Guid);
bool b = guidToGroups.TryGetValue(guid, out var groups);
Debug.Assert(b);
if (b)
{
BindBackgroundBrush(menuItem, isCtxMenu: false);
var ctx = new MenuItemContext(guid, true, new GuidObject(guid, null), null);
var firstMenuItem = menuItem.Items.Count == 1 ? menuItem.Items[0] as MenuItem : null;
var allItems = CreateMenuItems(ctx, groups, commandTarget, firstMenuItem, false);
foreach (var i in allItems)
{
if (firstMenuItem != i)
{
menuItem.Items.Add(i);
}
}
return(ctx);
}
return(null);
}
internal bool?ShowContextMenu(object evArgs, FrameworkElement ctxMenuElem, Guid topLevelMenuGuid, Guid ownerMenuGuid, GuidObject creatorObject, IGuidObjectsProvider?provider, IContextMenuInitializer?initCtxMenu, bool openedFromKeyboard)
{
InitializeMenuItemObjects();
Debug2.Assert(guidToGroups is not null);
// There could be nested context menu handler calls, eg. first text editor followed by
// the TabControl. We don't wan't the TabControl to disable the text editor's ctx menu.
if (prevEventArgs.Target == evArgs)
{
return(null);
}
var ctx = new MenuItemContext(topLevelMenuGuid, openedFromKeyboard, creatorObject, provider?.GetGuidObjects(new GuidObjectsProviderArgs(creatorObject, openedFromKeyboard)));
bool b = guidToGroups.TryGetValue(ownerMenuGuid, out var groups);
if (!b)
{
return(false);
}
Debug2.Assert(groups is not null);
var menu = new ContextMenu();
BindBackgroundBrush(menu, isCtxMenu: true);
// The owner control could be zoomed (eg. text editor) but the context menu isn't, so make
// sure we use 100% zoom here (same as the context menu).
double defaultZoom = 1.0;
DsImage.SetZoom(menu, defaultZoom);
// Also make sure we use Display mode. Let MetroWindow handle it since it has some extra checks
var window = Window.GetWindow(ctxMenuElem) as MetroWindow;
window?.SetScaleTransform(menu, defaultZoom);
var allItems = CreateMenuItems(ctx, groups, null, null, true);
if (allItems.Count == 0)
{
return(false);
}
foreach (var i in allItems)
{
menu.Items.Add(i);
}
menu.Closed += (s, e) => {
ctx.Dispose();
ctxMenuElem.ContextMenu = new ContextMenu();
};
if (initCtxMenu is not null)
{
initCtxMenu.Initialize(ctx, menu);
}
ctxMenuElem.ContextMenu = menu;
prevEventArgs.Target = evArgs;
return(true);
}
public Menu CreateMenu(Guid menuGuid, IInputElement commandTarget)
{
InitializeMenuItemObjects();
var menu = new Menu();
List <MenuMD> list;
if (!guidToMenu.TryGetValue(menuGuid, out list))
{
return(menu);
}
foreach (var md in list)
{
var guid = new Guid(md.Metadata.Guid);
List <MenuItemGroupMD> itemGroups;
if (!guidToGroups.TryGetValue(guid, out itemGroups))
{
continue;
}
var topMenuItem = new MenuItem()
{
Header = ResourceHelper.GetString(md.Menu, md.Metadata.Header)
};
topMenuItem.Items.Add(new MenuItem());
var mdTmp = md;
MenuItemContext ctxTmp = null;
topMenuItem.SubmenuOpened += (s, e) => {
if (e.Source == topMenuItem)
{
ctxTmp?.Dispose();
ctxTmp = InitializeMainSubMenu(topMenuItem, mdTmp, commandTarget);
}
};
topMenuItem.SubmenuClosed += (s, e) => {
if (e.Source == topMenuItem)
{
Debug.Assert(ctxTmp != null);
ctxTmp?.Dispose();
ctxTmp = null;
// There must always be exactly one MenuItem in the list when it's not shown.
// We must re-use the first one or the first menu item won't be highlighted
// when the menu is opened from the keyboard, eg. Alt+F.
topMenuItem.Items.Clear();
topMenuItem.Items.Add(new MenuItem());
}
};
menu.Items.Add(topMenuItem);
}
return(menu);
}
List <object> CreateMenuItems(MenuItemContext ctx, List <MenuItemGroupMD> groups, IInputElement commandTarget, MenuItem firstMenuItem, bool isCtxMenu)
{
var allItems = new List <object>();
var items = new List <MenuItemMD>();
bool needSeparator = false;
foreach (var group in groups)
{
items.Clear();
foreach (var item in group.Items)
{
if (item.MenuItem.IsVisible(ctx))
{
items.Add(item);
}
}
if (items.Count == 0)
{
continue;
}
if (needSeparator)
{
allItems.Add(new Separator());
}
needSeparator = true;
foreach (var item in items)
{
var itemProvider = item.MenuItem as IMenuItemProvider;
if (itemProvider != null)
{
foreach (var createdItem in itemProvider.Create(ctx))
{
var menuItem = Create(createdItem.MenuItem, createdItem.Metadata, ctx, commandTarget, firstMenuItem, isCtxMenu);
firstMenuItem = null;
allItems.Add(menuItem);
}
}
else
{
var menuItem = Create(item.MenuItem, item.Metadata, ctx, commandTarget, firstMenuItem, isCtxMenu);
firstMenuItem = null;
allItems.Add(menuItem);
}
}
}
return(allItems);
}
internal bool?ShowContextMenu(object evArgs, FrameworkElement ctxMenuElem, Guid topLevelMenuGuid, Guid ownerMenuGuid, GuidObject creatorObject, IGuidObjectsProvider provider, IContextMenuInitializer initCtxMenu, bool openedFromKeyboard)
{
InitializeMenuItemObjects();
// There could be nested contex menu handler calls, eg. first text editor followed by
// the TabControl. We don't wan't the TabControl to disable the text editor's ctx menu.
if (prevEventArgs.Target == evArgs)
{
return(null);
}
var ctx = new MenuItemContext(topLevelMenuGuid, openedFromKeyboard, creatorObject, provider?.GetGuidObjects(new GuidObjectsProviderArgs(creatorObject, openedFromKeyboard)));
List <MenuItemGroupMD> groups;
bool b = guidToGroups.TryGetValue(ownerMenuGuid, out groups);
if (!b)
{
return(false);
}
var menu = new ContextMenu();
BindBackgroundBrush(menu, isCtxMenu: true);
var allItems = CreateMenuItems(ctx, groups, null, null, true);
if (allItems.Count == 0)
{
return(false);
}
foreach (var i in allItems)
{
menu.Items.Add(i);
}
menu.Closed += (s, e) => {
ctx.Dispose();
ctxMenuElem.ContextMenu = new ContextMenu();
};
if (initCtxMenu != null)
{
initCtxMenu.Initialize(ctx, menu);
}
ctxMenuElem.ContextMenu = menu;
prevEventArgs.Target = evArgs;
return(true);
}
void InitializeSubMenu(MenuItem menuItem, MenuItemContext ctx, Guid ownerMenuGuid, IInputElement commandTarget, bool isCtxMenu)
{
Reinitialize(menuItem);
bool b = guidToGroups.TryGetValue(ownerMenuGuid, out var groups);
Debug.Assert(b);
if (b)
{
BindBackgroundBrush(menuItem, isCtxMenu);
var firstMenuItem = menuItem.Items.Count == 1 ? menuItem.Items[0] as MenuItem : null;
var allItems = CreateMenuItems(ctx, groups, commandTarget, firstMenuItem, isCtxMenu);
foreach (var i in allItems)
{
if (firstMenuItem != i)
{
menuItem.Items.Add(i);
}
}
}
}
MenuItem Create(IMenuItem item, IMenuItemMetadata metadata, MenuItemContext ctx, IInputElement commandTarget, MenuItem menuItem, bool isCtxMenu)
{
if (menuItem == null)
{
menuItem = new MenuItem();
}
menuItem.CommandTarget = commandTarget;
string header = ResourceHelper.GetString(item, metadata.Header);
string inputGestureText = ResourceHelper.GetString(item, metadata.InputGestureText);
ImageReference?iconImgRef = ImageReferenceHelper.GetImageReference(item, metadata.Icon);
header = item.GetHeader(ctx) ?? header;
inputGestureText = item.GetInputGestureText(ctx) ?? inputGestureText;
iconImgRef = item.GetIcon(ctx) ?? iconImgRef;
menuItem.IsChecked = item.IsChecked(ctx);
menuItem.Header = header;
menuItem.InputGestureText = inputGestureText;
var cmdHolder = item as ICommandHolder;
bool lastIsEnabledCallValue = false;
if (iconImgRef != null)
{
if (cmdHolder == null)
{
lastIsEnabledCallValue = item.IsEnabled(ctx);
}
else
{
var routedCommand = cmdHolder.Command as RoutedCommand;
lastIsEnabledCallValue = commandTarget == null || routedCommand == null || routedCommand.CanExecute(ctx, commandTarget);
}
Add16x16Image(menuItem, iconImgRef.Value, lastIsEnabledCallValue);
}
if (metadata.Guid != null)
{
var itemGuid = Guid.Parse(metadata.Guid);
if (guidToGroups.ContainsKey(itemGuid))
{
menuItem.Items.Add(new MenuItem());
menuItem.SubmenuOpened += (s, e) => {
if (e.Source == menuItem)
{
InitializeSubMenu(menuItem, ctx, itemGuid, commandTarget, isCtxMenu);
}
};
menuItem.SubmenuClosed += (s, e) => {
if (e.Source == menuItem)
{
menuItem.Items.Clear();
menuItem.Items.Add(new MenuItem());
}
};
}
}
ctx.OnDisposed += (_, __) => {
// Buggy automation peers could hold a reference to us, so clear the captured variables (we can't clear the captured 'this')
menuItem = null;
ctx = null;
commandTarget = null;
item = null;
iconImgRef = null;
};
menuItem.Command = cmdHolder != null ? cmdHolder.Command : new RelayCommand(a => {
Debug.Assert(!ctx.IsDisposed);
if (ctx?.IsDisposed == false)
{
item.Execute(ctx);
ctx?.Dispose();
}
}, a => {
if (ctx?.IsDisposed != false)
{
return(false);
}
bool b = item.IsEnabled(ctx);
if (lastIsEnabledCallValue != b && iconImgRef != null)
{
Add16x16Image(menuItem, iconImgRef.Value, lastIsEnabledCallValue = b);
}
return(b);
});
return(menuItem);
}
MenuItem Create(IMenuItem item, IMenuItemMetadata metadata, MenuItemContext ctx, IInputElement commandTarget, MenuItem menuItem, bool isCtxMenu)
{
if (menuItem == null)
{
menuItem = new MenuItem();
}
menuItem.CommandTarget = commandTarget;
string header = ResourceHelper.GetString(item, metadata.Header);
string inputGestureText = ResourceHelper.GetString(item, metadata.InputGestureText);
ImageReference?iconImgRef = string.IsNullOrEmpty(metadata.Icon) ? (ImageReference?)null : new ImageReference(item.GetType().Assembly, metadata.Icon);
var mi2 = item as IMenuItem2;
if (mi2 != null)
{
header = mi2.GetHeader(ctx) ?? header;
inputGestureText = mi2.GetInputGestureText(ctx) ?? inputGestureText;
iconImgRef = mi2.GetIcon(ctx) ?? iconImgRef;
menuItem.IsChecked = mi2.IsChecked(ctx);
}
menuItem.Header = header;
menuItem.InputGestureText = inputGestureText;
var cmdHolder = item as ICommandHolder;
bool lastIsEnabledCallValue = false;
if (iconImgRef != null)
{
if (cmdHolder == null)
{
lastIsEnabledCallValue = item.IsEnabled(ctx);
}
else
{
var routedCommand = cmdHolder.Command as RoutedCommand;
lastIsEnabledCallValue = commandTarget == null || routedCommand == null || routedCommand.CanExecute(ctx, commandTarget);
}
imageManager.Add16x16Image(menuItem, iconImgRef.Value, isCtxMenu, lastIsEnabledCallValue);
}
if (metadata.Guid != null)
{
var itemGuid = Guid.Parse(metadata.Guid);
List <MenuItemGroupMD> list;
if (guidToGroups.TryGetValue(itemGuid, out list))
{
menuItem.Items.Add(new MenuItem());
menuItem.SubmenuOpened += (s, e) => {
if (e.Source == menuItem)
{
InitializeSubMenu(menuItem, ctx, itemGuid, commandTarget, isCtxMenu);
}
};
menuItem.SubmenuClosed += (s, e) => {
if (e.Source == menuItem)
{
menuItem.Items.Clear();
menuItem.Items.Add(new MenuItem());
}
};
}
}
menuItem.Command = cmdHolder != null ? cmdHolder.Command : new RelayCommand(a => {
Debug.Assert(!ctx.IsDisposed);
if (!ctx.IsDisposed)
{
item.Execute(ctx);
ctx.Dispose();
}
}, a => {
if (ctx.IsDisposed)
{
return(false);
}
bool b = item.IsEnabled(ctx);
if (lastIsEnabledCallValue != b && iconImgRef != null)
{
imageManager.Add16x16Image(menuItem, iconImgRef.Value, isCtxMenu, lastIsEnabledCallValue = b);
}
return(b);
});
return(menuItem);
}