protected override void OnElementChanged(ElementChangedEventArgs <Picker> e)
{
if (e.OldElement != null)
{
((INotifyCollectionChanged)e.OldElement.Items).CollectionChanged -= RowsCollectionChanged;
}
if (e.NewElement != null)
{
((INotifyCollectionChanged)e.NewElement.Items).CollectionChanged += RowsCollectionChanged;
if (Control == null)
{
var textField = CreateNativeControl();
textField.SetAccessibilityDelegate(_pickerAccessibilityDelegate = new EntryAccessibilityDelegate(Element));
var useLegacyColorManagement = e.NewElement.UseLegacyColorManagement();
_textColorSwitcher = new TextColorSwitcher(textField.TextColors, useLegacyColorManagement);
SetNativeControl(textField);
_originalHintTextColor = Control.CurrentHintTextColor;
}
UpdateFont();
UpdatePicker();
UpdateTextColor();
UpdateCharacterSpacing();
}
base.OnElementChanged(e);
}
protected override void OnElementChanged(ElementChangedEventArgs <SearchBar> e)
{
base.OnElementChanged(e);
SearchView searchView = Control;
var isDesigner = Context.IsDesignerContext();
if (searchView == null)
{
searchView = CreateNativeControl();
searchView.SetIconifiedByDefault(false);
// set Iconified calls onSearchClicked
// https://github.com/aosp-mirror/platform_frameworks_base/blob/6d891937a38220b0c712a1927f969e74bea3a0f3/core/java/android/widget/SearchView.java#L674-L680
// which causes requestFocus. The designer does not support focuses.
if (!isDesigner)
{
searchView.Iconified = false;
}
SetNativeControl(searchView);
_editText = _editText ?? Control.GetChildrenOfType <EditText>().FirstOrDefault();
if (_editText != null)
{
var useLegacyColorManagement = e.NewElement.UseLegacyColorManagement();
_textColorSwitcher = new TextColorSwitcher(_editText.TextColors, useLegacyColorManagement);
_hintColorSwitcher = new TextColorSwitcher(_editText.HintTextColors, useLegacyColorManagement);
}
}
if (!isDesigner)
{
ClearFocus(searchView);
}
UpdateInputType();
UpdatePlaceholder();
UpdateText();
UpdateEnabled();
UpdateCancelButtonColor();
UpdateFont();
UpdateHorizontalTextAlignment();
UpdateVerticalTextAlignment();
UpdateTextColor();
UpdateCharacterSpacing();
UpdatePlaceholderColor();
UpdateMaxLength();
if (e.OldElement == null)
{
searchView.SetOnQueryTextListener(this);
searchView.SetOnQueryTextFocusChangeListener(this);
}
}
public SearchHandlerAppearanceTracker(IShellSearchView searchView)
{
_searchHandler = searchView.SearchHandler;
_control = searchView.View;
_searchHandler.PropertyChanged += SearchHandlerPropertyChanged;
_searchHandler.FocusChangeRequested += SearchHandlerFocusChangeRequested;
_editText = (_control as ViewGroup).GetChildrenOfType <EditText>().FirstOrDefault();
_textColorSwitcher = new TextColorSwitcher(_editText.TextColors, false);
_hintColorSwitcher = new TextColorSwitcher(_editText.HintTextColors, false);
UpdateSearchBarColors();
UpdateFont();
UpdateHorizontalTextAlignment();
UpdateVerticalTextAlignment();
UpdateInputType();
}
protected override void OnElementChanged(ElementChangedEventArgs <Button> e)
{
base.OnElementChanged(e);
if (e.OldElement == null)
{
AButton button = Control;
if (button == null)
{
button = CreateNativeControl();
button.SetOnClickListener(ButtonClickListener.Instance.Value);
button.SetOnTouchListener(ButtonTouchListener.Instance.Value);
button.Tag = this;
SetNativeControl(button);
var useLegacyColorManagement = e.NewElement.UseLegacyColorManagement();
_textColorSwitcher = new TextColorSwitcher(button.TextColors, useLegacyColorManagement);
button.AddOnAttachStateChangeListener(this);
}
}
UpdateAll();
}
protected override void UpdateTextColor(Color color)
{
_textColorSwitcher = _textColorSwitcher ?? new TextColorSwitcher(EditText.TextColors, Element.UseLegacyColorManagement());
_textColorSwitcher.UpdateTextColor(EditText, color);
}
protected override void UpdatePlaceholderColor()
{
_hintColorSwitcher = _hintColorSwitcher ?? new TextColorSwitcher(EditText.HintTextColors, Element.UseLegacyColorManagement());
_hintColorSwitcher.UpdateTextColor(EditText, Element.PlaceholderColor, EditText.SetHintTextColor);
}