public override int GetItemViewType(int position)
{
ModifiableChoice item = GetItem(position);
if (item.Choice.Separator)
{
return(TYPE_SEPARATOR);
}
else if (_choicePromptType == GeckoSession.romptDelegateClassChoice.ChoiceTypeMenu)
{
return(item.ModifiableSelected ? TYPE_MENU_CHECK : TYPE_MENU_ITEM);
}
else if (item.Choice.Items != null)
{
return(TYPE_GROUP);
}
else if (_choicePromptType == GeckoSession.romptDelegateClassChoice.ChoiceTypeSingle)
{
return(TYPE_SINGLE);
}
else if (_choicePromptType == GeckoSession.romptDelegateClassChoice.ChoiceTypeMultiple)
{
return(TYPE_MULTIPLE);
}
else
{
throw new UnsupportedOperationException();
}
}
public override bool IsEnabled(int position)
{
ModifiableChoice item = GetItem(position);
return(!item.Choice.Separator && !item.Choice.Disabled &&
((_choicePromptType != GeckoSession.romptDelegateClassChoice.ChoiceTypeSingle &&
_choicePromptType != GeckoSession.romptDelegateClassChoice.ChoiceTypeMultiple) ||
item.Choice.Items == null));
}
private void AddChoiceItems(int type, ModifiableChoiceArrayAdapter <ModifiableChoice> list,
GeckoSession.romptDelegateClassChoice[] items, string indent)
{
if (type == GeckoSession.romptDelegateClassChoice.ChoiceTypeMenu)
{
foreach (GeckoSession.romptDelegateClassChoice item in items)
{
list.Add(new ModifiableChoice(item));
}
return;
}
foreach (GeckoSession.romptDelegateClassChoice item in items)
{
ModifiableChoice modItem = new ModifiableChoice(item);
GeckoSession.romptDelegateClassChoice[] children = item.Items?.ToArray();
if (indent != null && children == null)
{
modItem.ModifiableLabel = indent + modItem.ModifiableLabel;
}
list.Add(modItem);
if (children != null)
{
string newIndent;
if (type == GeckoSession.romptDelegateClassChoice.ChoiceTypeSingle || type == GeckoSession.romptDelegateClassChoice.ChoiceTypeMultiple)
{
newIndent = (indent != null) ? indent + '\t' : "\t";
}
else
{
newIndent = null;
}
AddChoiceItems(type, list, children, newIndent);
}
}
}
public virtual void OnChoicePrompt(GeckoSession session, string title, string msg, int type, GeckoSession.romptDelegateClassChoice[] choices, GeckoSession.PromptDelegateClassChoiceCallback prompt)
{
//This code is highly inspired of https://github.com/mozilla-mobile/focus-android/blob/f5b22ff78fca22765b8b873b4f70693943ae559a/app/src/main/java/org/mozilla/focus/gecko/GeckoViewPrompt.java#L265
var currentActivity = BlazorWebViewService.GetCurrentActivity();
if (currentActivity == null)
{
prompt.Dismiss();
return;
}
var builder = new Android.App.AlertDialog.Builder(currentActivity);
AddStandardLayout(builder, title, msg);
Android.Widget.ListView list = new Android.Widget.ListView(builder.Context);
if (type == GeckoSession.romptDelegateClassChoice.ChoiceTypeMultiple)
{
list.ChoiceMode = ChoiceMode.Multiple;
}
ModifiableChoiceArrayAdapter <ModifiableChoice> adapter = new ModifiableChoiceArrayAdapter <ModifiableChoice>(builder.Context, Android.Resource.Layout.SimpleListItem1, type, builder, list);
AddChoiceItems(type, adapter, choices, /* indent */ null);
list.SetAdapter(adapter);
builder.SetView(list);
AlertDialog dialog;
if (type == GeckoSession.romptDelegateClassChoice.ChoiceTypeSingle || type == GeckoSession.romptDelegateClassChoice.ChoiceTypeMenu)
{
dialog = CreateStandardDialog(builder, prompt);
list.ItemClick += (sender, e) =>
{
ModifiableChoice item = adapter.GetItem(e.Position);
if (type == GeckoSession.romptDelegateClassChoice.ChoiceTypeMenu)
{
GeckoSession.romptDelegateClassChoice[] children = item.Choice.Items?.ToArray();
if (children != null)
{
// Show sub-menu.
dialog.SetOnDismissListener(null);
dialog.Dismiss();
OnChoicePrompt(session, item.ModifiableLabel, /* msg */ null,
type, children, prompt);
return;
}
}
prompt.Confirm(item.Choice);
dialog.Dismiss();
};
}
else if (type == GeckoSession.romptDelegateClassChoice.ChoiceTypeMultiple)
{
list.ItemClick += (sender, e) =>
{
ModifiableChoice item = adapter.GetItem(e.Position);
item.ModifiableSelected = ((CheckedTextView)e.View).Checked;
};
builder
.SetNegativeButton(Android.Resource.String.Cancel, /* listener */ (IDialogInterfaceOnClickListener)null)
.SetPositiveButton(Android.Resource.String.Ok, (sender, e) =>
{
int len = adapter.Count;
List <string> items = new List <string>(len);
for (int i = 0; i < len; i++)
{
ModifiableChoice item = adapter.GetItem(i);
if (item.ModifiableSelected)
{
items.Add(item.Choice.Id);
}
}
prompt.Confirm(items.ToArray());
});
dialog = CreateStandardDialog(builder, prompt);
}
else
{
throw new UnsupportedOperationException();
}
dialog.Show();
//TODO: Don't forget to Dispose dialogbuilder
}
public override Android.Views.View GetView(int position, Android.Views.View view, ViewGroup parent)
{
var context = BlazorWebViewService.GetCurrentActivity();
int itemType = GetItemViewType(position);
int layoutId;
if (itemType == TYPE_SEPARATOR)
{
if (mSeparator == null)
{
mSeparator = new Android.Views.View(context);
mSeparator.LayoutParameters = new Android.Widget.ListView.LayoutParams(ViewGroup.LayoutParams.MatchParent, 2, itemType);
TypedArray attr = context.ObtainStyledAttributes(
new int[] { Android.Resource.Attribute.ListDivider });
mSeparator.SetBackgroundResource(attr.GetResourceId(0, 0));
attr.Recycle();
}
return(mSeparator);
}
else if (itemType == TYPE_MENU_ITEM)
{
layoutId = Android.Resource.Layout.SimpleListItem1;
}
else if (itemType == TYPE_MENU_CHECK)
{
layoutId = Android.Resource.Layout.SimpleListItemChecked;
}
else if (itemType == TYPE_GROUP)
{
layoutId = Android.Resource.Layout.PreferenceCategory;
}
else if (itemType == TYPE_SINGLE)
{
layoutId = Android.Resource.Layout.SimpleListItemSingleChoice;
}
else if (itemType == TYPE_MULTIPLE)
{
layoutId = Android.Resource.Layout.SimpleListItemMultipleChoice;
}
else
{
throw new UnsupportedOperationException();
}
if (view == null)
{
if (mInflater == null)
{
mInflater = LayoutInflater.From(_builder.Context);
}
view = mInflater.Inflate(layoutId, parent, false);
}
ModifiableChoice item = GetItem(position);
TextView text = (TextView)view;
text.Enabled = !item.Choice.Disabled;
text.Text = item.ModifiableLabel;
if (view is CheckedTextView)
{
bool selected = item.ModifiableSelected;
if (itemType == TYPE_MULTIPLE)
{
_list.SetItemChecked(position, selected);
}
else
{
((CheckedTextView)view).Checked = selected;
}
}
return(view);
}