private void SelectMenuLevel3FromLevel2(ModernMenuItem selectedItem, string level3ToSelect)
{
ModernMenuItem selectedLevel3Item = null;
foreach (var item3 in selectedItem.Items)
{
this.MainMenuLevel3.Add(item3);
if (item3.IsSelected && level3ToSelect == null)
{
selectedLevel3Item = item3;
}
else if (level3ToSelect == item3.Key)
{
selectedLevel3Item = item3;
selectedLevel3Item.IsSelected = true;
}
else
{
item3.IsSelected = false;
}
}
ItemsControl ic = this.Template.FindName("ItemsControl", this) as ItemsControl;
ic.BeginStoryboard((Storyboard)FindResource("ContentLeftInStoryboard"));
if (selectedLevel3Item != null)
{
SelectMenuItem_Level3(selectedLevel3Item);
}
else
{
SelectMenuItem_Level3(selectedItem.Items[0]);
}
}
void SelectMenuItem_Level2(ModernMenuItem selectedItem, string level3ToSelect = null)
{
ModernMenuItem previousItem = null;
foreach (ModernMenuItem item in selectedItem.Parent.Items)
{
if (item.IsSelected)
{
previousItem = item;
break;
}
}
if (LoadContent(selectedItem, out bool isLeft, out bool AnimationShown))
{
if (previousItem != selectedItem || (this.MainMenuLevel3.Count == 0 && selectedItem.Items != null))
{
if (previousItem != null)
{
previousItem.IsSelected = false;
}
selectedItem.IsSelected = true;
this.MainMenuLevel3.Clear();
if (selectedItem.Items != null && selectedItem.Items.Count > 0)
{
SelectMenuLevel3FromLevel2(selectedItem, level3ToSelect);
}
}
else if (level3ToSelect != null && selectedItem.Items != null && selectedItem.Items.Count > 0) //The Level2 of the KeyPath is the same, but we still need to select the 3rd level item
{
SelectMenuLevel3FromLevel2(selectedItem, level3ToSelect);
}
}
}
void MainMenuItemLevel3_MouseDown(object sender, MouseEventArgs e)
{
ModernMenuItem item = sender as ModernMenuItem;
if (this.Content != null && item.ContentType == this.Content?.GetType())
{
return;
}
SelectMenuItem_Level3(item);
}
async void MainMenuItem_MouseDown(object sender, MouseButtonEventArgs e)
{
ModernMenuItem item = sender as ModernMenuItem;
if (this.Content != null && item.ContentType == this.Content?.GetType())
{
return;
}
if (!(this.Content is ModernContent currentContent) || currentContent.CanBeClosed())
{
suppressCanBeClosed = true;
await SelectMenuItem_Level1(item);
suppressCanBeClosed = false;
}
}
void SelectMenuItem_Level3(ModernMenuItem selectedItem)
{
ModernMenuItem previousItem = null;
foreach (ModernMenuItem item in selectedItem.Parent.Items)
{
if (item.IsSelected)
{
previousItem = item;
break;
}
}
if (LoadContent(selectedItem, out bool isLeft, out bool AnimationShown) && previousItem != selectedItem)
{
if (previousItem != null)
{
previousItem.IsSelected = false;
}
selectedItem.IsSelected = true;
}
}
async Task SelectMenuItem_Level1(ModernMenuItem selectedItem, string level2ToSelect = null, string level3ToSelect = null)
{
ModernMenuItem previousItem = null;
foreach (ModernMenuItem item in this.MainMenu)
{
if (item.IsSelected)
{
previousItem = item;
break;
}
}
if (LoadContent(selectedItem, out bool isLeft, out bool AnimationShown))
{
if (previousItem != selectedItem || level2ToSelect != null)
{
if (previousItem != null)
{
previousItem.IsSelected = false;
}
selectedItem.IsSelected = true;
this.MainMenuLevel2.Clear();
this.MainMenuLevel3.Clear();
if (selectedItem.Items != null && selectedItem.Items.Count > 0)
{
int count = selectedItem.Items.Count;
ModernMenuItem selectedLevel2Item = null;
if (!AnimationShown)
{
HideContent(isLeft);
}
await Task.Run(() =>
{
for (int i = 0; i < count; i++)
{
this.Dispatcher.Invoke(new Action(() =>
{
ModernMenuItem current = selectedItem.Items[i];
this.MainMenuLevel2.Add(current);
if (current.IsSelected && level2ToSelect == null)
{
selectedLevel2Item = current;
}
else if (level2ToSelect == current.Key)
{
selectedLevel2Item = current;
selectedLevel2Item.IsSelected = true;
}
else
{
current.IsSelected = false;
}
}
));
Thread.Sleep(50);
}
}
);
if (selectedLevel2Item != null)
{
SelectMenuItem_Level2(selectedLevel2Item, level3ToSelect);
}
else
{
SelectMenuItem_Level2(selectedItem.Items[0]);
}
}
}
else if (level2ToSelect != null && selectedItem.Items != null && selectedItem.Items.Count > 0)
{
//The Level1 of the KeyPath is the same, so we need to select the second level item
int count = selectedItem.Items.Count;
ModernMenuItem selectedLevel2Item = null;
await Task.Run(() =>
{
this.Content = null;
for (int i = 0; i < count; i++)
{
this.Dispatcher.Invoke(new Action(() =>
{
ModernMenuItem current = selectedItem.Items[i];
if (current.IsSelected && level2ToSelect == null)
{
selectedLevel2Item = current;
}
else if (level2ToSelect == current.Key)
{
selectedLevel2Item = current;
selectedLevel2Item.IsSelected = true;
}
else
{
current.IsSelected = false;
}
}
));
Thread.Sleep(50);
}
}
);
if (selectedLevel2Item != null)
{
SelectMenuItem_Level2(selectedLevel2Item, level3ToSelect);
}
else
{
SelectMenuItem_Level2(selectedItem.Items[0]);
}
}
}
}
internal bool LoadContent(ModernMenuItem item, out bool isLeft, out bool AnimationShown)
{
int previousIndex, currentIndex;
currentIndex = item.Index;
previousIndex = 0;
if (recentActions.Count > 0)
{
ModernMenuItem previousItem = recentActions.Peek() as ModernMenuItem;
previousIndex = previousItem.Index;
}
isLeft = currentIndex <= previousIndex;
System.Diagnostics.Debug.WriteLine("IsLeft=" + isLeft);
AnimationShown = false;
if (item.Items != null && item.Items.Count > 0)
{
return(true);
}
if (this.Content is ModernContent currentContent && !suppressCanBeClosed && !currentContent.CanBeClosed())
{
return(false);
}
recentActions.Push(item);
if (item.ContentType != null && item.ContentType.IsSubclassOf(typeof(ModernContent)))
{
Storyboard story = isLeft ? ((Storyboard)FindResource("ContentLeftInStoryboard")).Clone() : ((Storyboard)FindResource("ContentRightInStoryboard")).Clone();
if (Cache.ContainsKey(item))
{
//item has already in the Cache
ModernContent content = Cache[item];
loadedMenu = item;
if (LoadContentSub(content, out AnimationShown, story))
{
return(true);
}
}
else
{
ModernContent content = (ModernContent)Activator.CreateInstance(item.ContentType);
Cache.Add(item, content);
loadedMenu = item;
if (LoadContentSub(content, out AnimationShown, story))
{
return(true);
}
}
}
else
{
this.Content = null;
this.CommandArea = null;
this.IsContentDetachable = false;
this.IsContentDetached = false;
loadedMenu = item;
nextStatusBar = DefaultStatusBar;
if (this.StatusBar != nextStatusBar)
{
if (this.StatusBar != null)
{
this.StatusBar.BeginStoryboard(HideStatusbarStoryboard);
System.Diagnostics.Debug.WriteLine("Hide StatueBar line 190");
}
else
{
this.StatusBar = nextStatusBar;
if (this.StatusBar != null)
{
this.StatusBar.BeginStoryboard(ShowStatusbarStoryboard);
System.Diagnostics.Debug.WriteLine("Show StatusBar line 198");
}
}
}
}
return(true);
}