private void UpdateCurrentPage()
{
var page = this.Tabbed.CurrentPage;
var itemId = this.Tabbed.Children.IndexOf(page);
this.UpdateTabSelection(itemId, page, TabbedPageTransforms.GetDisableLoad(page));
}
private void UpdateTabBarItems()
{
try
{
for (int i = 0; i < this.TabBar.Items.Length; i++)
{
var page = this.Tabbed.GetChildPageWithTransform(i);
var tabItem = this.TabBar.Items[i];
page.PropertyChanged += OnTabbedPagePropertyChanged;
if (TabbedPageTransforms.GetHideTitle(page))
{
this.hidepageIndex = i;
this.hidepageTitle = page.Title;
this.UpdateHideTitle(tabItem);
}
this.UpdateTabBadgeText(tabItem, page);
this.UpdateTabBadgeColor(tabItem, page);
this.UpdateTabBadgeTextAttributes(tabItem, page);
if (!string.IsNullOrEmpty(TabBadge.GetBadgeText(page)))
{
var view = this.GetTabItemView(tabItem.Title, true);
if (view != null)
{
this.UpdateBadgeView(page, view, (float)view.Frame.Width);
}
}
}
}
catch
{
}
}
private void UpdateCurrentPage()
{
tabCount = InitLayout();
var page = Element.CurrentPage;
var selectedIndex = Element.Children.IndexOf(page);
UpdateIconsAsync(selectedIndex);
this.UpdateTabSelection(selectedIndex, page, TabbedPageTransforms.GetDisableLoad(page));
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == "CurrentPage")
{
this.UpdateTabs();
}
else if (e.PropertyName == TabPage.IsSelectionChangedProperty.PropertyName && TabPage.IsSelectionChanged)
{
var currentPage = this.Element.CurrentPage;
var itemId = this.Element.Children.IndexOf(currentPage);
this.UpdateTabSelection(itemId, currentPage, TabbedPageTransforms.GetDisableLoad(currentPage));
}
}
private void UpdateTab(int tabIndex)
{
var page = Element.GetChildPageWithTransform(tabIndex);
var menu = (BottomNavigationMenuView)_bottomNavigationView.GetChildAt(0);
var isTitledisabled = TabbedPageTransforms.GetHideTitle(page);
var view = menu.GetChildAt(tabIndex);
if (view == null)
{
return;
}
if (view is BottomNavigationItemView itemView)
{
itemView.SetShifting(false);
itemView.SetBackground(null);
itemView.SetBackgroundColor(Android.Graphics.Color.Transparent);
for (int j = 0; j < itemView.ChildCount; j++)
{
UIView childView = itemView.GetChildAt(j);
if (childView is BaselineLayout baselineLayout)
{
if (isTitledisabled)
{
childView.Visibility = ViewStates.Gone;
childView.SetPadding(0, 0, 0, 0);
}
for (int z = 0; z < baselineLayout.ChildCount; z++)
{
var textview = baselineLayout.GetChildAt(z);
textview.SetPadding(0, 0, 0, 0);
if (isTitledisabled)
{
textview.Visibility = ViewStates.Gone;
}
}
}
else if (isTitledisabled && childView is ImageView icon)
{
FrameLayout.LayoutParams parames = (FrameLayout.LayoutParams)icon.LayoutParameters;
parames.Height = LayoutParams.MatchParent;
parames.Width = LayoutParams.MatchParent;
itemView.SetChecked(false);
parames.SetMargins(0, 8, 0, 8);
}
}
}
}
public new bool OnNavigationItemSelected(IMenuItem item)
{
if (Element == null)
{
return(false);
}
var id = item.ItemId;
var tabnavigationresult = TabbedPageTransforms.TabIconClickedFunction(id, selectedTabId, this);
if (tabnavigationresult)
{
return(false);
}
var page = Element.GetChildPageWithTransform(id);
var ispagedisabled = TabbedPageTransforms.GetDisableLoad(page);
this.UpdateTabSelection(id, page, ispagedisabled);
if (!ispagedisabled)
{
if (_bottomNavigationView != null)
{
if (_bottomNavigationView.SelectedItemId != id && Element.Children.Count > id && id >= 0)
{
Element.CurrentPage = Element.Children[id];
UpdateIconsAsync(id);
}
else if (_bottomNavigationView.SelectedItemId == id)
{
UpdateIconsAsync(id);
}
else
{
UpdateIconsAsync(-1);
}
}
return(true);
}
return(false);
}
private async void TabbedPageTransforms_TabIconClicked(object sender, Helper.TabsEventArgs e)
{
var selectedPage = TabbedPageTransforms.GetChildPageWithTransform(this, e.SelectedIndex);
var lastSelectedPage = TabbedPageTransforms.GetChildPageWithTransform(this, e.LastSelectedIndex);
if (selectedPage != null)
{
if (selectedPage.Title == "Popup")
{
await Navigation.PushModalAsync(new TransitionNavigationPage(true, new HalfPopUpPage()
{
Title = selectedPage.Title, BindingContext = this.BindingContext
}), true);
}
else if (selectedPage.Title == "PopupMenu")
{
await Navigation.PushModalAsync(new TransitionNavigationPage(true, new FullPopUpPage(this.BottomBarHeight)
{
Title = selectedPage.Title, BindingContext = this.BindingContext
}), true);
}
}
}
private void UpdateTabSelection(int itemId, Page currentpage, bool isPagedisabled)
{
if (TabbedPageTransforms.GetDisableSelection(currentpage))
{
return;
}
var lastPage = Element.GetChildPageWithTransform(selectedTabId);
var islastpagedisabled = lastPage == null ? false : TabbedPageTransforms.GetDisableLoad(lastPage);
var selectedtabcolor = this.Element.SelectedTabColor;
var unselectedtabcolor = this.Element.UnselectedTabColor;
if (_bottomNavigationView != null)
{
var currentTabView = GetBottomNavigationItemView(itemId);
var lastTabView = GetBottomNavigationItemView(selectedTabId);
if (selectedTabId == itemId)
{
if (TabbedPageTransforms.GetDisableLoad(currentpage))
{
var setColor = selectedtabcolor;
var resetColor = unselectedtabcolor;
if (!isdisabledTabpressed)
{
isdisabledTabpressed = true;
setColor = unselectedtabcolor;
resetColor = selectedtabcolor;
}
else if (isdisabledTabpressed)
{
isdisabledTabpressed = false;
}
this.UpdateTabColor(currentpage, setColor, currentTabView);
if (lastactiveTabId >= 0)
{
var lastactivePage = Element.GetChildPageWithTransform(lastactiveTabId);
var lastactiveTabView = GetBottomNavigationItemView(lastactiveTabId);
this.UpdateTabColor(lastactivePage, resetColor, lastactiveTabView);
}
}
}
else if (selectedTabId != itemId && Element.Children.Count > itemId && itemId >= 0)
{
if (isdisabledTabpressed && lastactiveTabId >= 0)
{
var lastactivePage = Element.GetChildPageWithTransform(lastactiveTabId);
var lastactiveTabView = GetBottomNavigationItemView(lastactiveTabId);
this.UpdateTabColor(lastactivePage, unselectedtabcolor, lastactiveTabView);
}
isdisabledTabpressed = false;
this.UpdateTabColor(currentpage, selectedtabcolor, currentTabView);
this.UpdateTabColor(lastPage, unselectedtabcolor, lastTabView);
if (isPagedisabled && !islastpagedisabled)
{
lastactiveTabId = selectedTabId;
}
}
}
//For future purpose.
//if (istitledisabled && islastpagedisabled)
//{
// this.UpdateTabColor(lastPage, unselectedtabcolor, lastTabView);
// if (lastactiveTabId >= 0)
// {
// var lastactivePage = Element.GetChildPageWithTransform(lastactiveTabId);
// var lastactiveTabView = GetBottomNavigationItemView(lastactiveTabId);
// this.UpdateTabColor(lastactivePage, selectedtabcolor, lastactiveTabView);
// }
//}
selectedTabId = itemId;
TabPage.IsSelectionChanged = false;
}