/// <summary>Called when the element is focused.</summary>
internal override void OnFocusEvent(FocusEvent fe)
{
if (!IsTextInput() || Caret != null)
{
return;
}
if (innerHTML == Placeholder_ && Placeholder_ != "")
{
innerHTML = "";
}
// Add a caret.
Caret = Style.Computed.GetOrCreateVirtual(HtmlCaretElement.Priority, "caret") as HtmlCaretElement;
}
/// <summary>Called when the element is unfocused/blurred.</summary>
internal override void OnBlurEvent(FocusEvent fe)
{
if (Caret == null)
{
return;
}
// Remove the caret:
Style.Computed.RemoveVirtual(HtmlCaretElement.Priority);
Caret = null;
if (innerHTML == "" && Placeholder_ != "")
{
innerHTML = Placeholder_;
}
}
internal override void OnBlurEvent(FocusEvent fe)
{
// Is the new focused element a child of dropdown?
Dom.Element current = fe.focusing as Dom.Element;
while (current != null)
{
if (current.Tag == "dropdown")
{
return;
}
current = current.parentElement;
}
Hide();
}
/// <summary>Focuses this element so it receives events such as keypresses.</summary>
public void focus()
{
HtmlDocument doc = htmlDocument;
if (doc.activeElement == this)
{
return;
}
// Focus out first:
FocusEvent fe = new FocusEvent("focusout");
// It's trusted but doesn't bubble:
fe.SetTrusted(false);
fe.focusing = this;
fe.relatedTarget = this;
if (doc.activeElement != null)
{
if (!doc.activeElement.dispatchEvent(fe))
{
return;
}
}
// Focus in next:
fe.Reset();
fe.EventType = "focusin";
fe.relatedTarget = doc.activeElement;
if (!dispatchEvent(fe))
{
return;
}
// Blur next:
fe.Reset();
fe.relatedTarget = null;
fe.EventType = "blur";
PowerUI.Input.LastFocusedDocument = doc;
if (doc.activeElement != null)
{
(doc.activeElement as HtmlElement).Unfocus(fe);
}
doc.activeElement = this;
// Update local style:
Style.Computed.RefreshLocal();
#if MOBILE
// Should we pop up the mobile keyboard?
KeyboardMode mobile = OnShowMobileKeyboard();
if (Input.HandleKeyboard(mobile))
{
Input.KeyboardText = value;
}
#endif
// Reset so we can recycle it:
fe.Reset();
fe.EventType = "focus";
// Dispatch and check if it got cancelled:
if (dispatchEvent(fe))
{
// Run the default for this element:
OnFocusEvent(fe);
}
}
/// <summary>Called when this element becomes unfocused.</summary>
internal virtual void OnBlurEvent(FocusEvent fe)
{
}