dom/xul/XULTextElement.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/Element.h"
   8 #include "mozilla/dom/ToJSValue.h"
   9 #include "nsCOMPtr.h"
  10 #include "nsChangeHint.h"
  11 #include "nsIContent.h"
  12 #include "nsPresContext.h"
  13 #include "nsIScrollableFrame.h"
  14 #include "mozilla/dom/MutationEventBinding.h"
  15 #include "mozilla/dom/XULTextElement.h"
  16 #include "mozilla/dom/XULTextElementBinding.h"
  17
  18 namespace mozilla::dom {
  19
  20 nsChangeHint XULTextElement::GetAttributeChangeHint(const nsAtom* aAttribute,
  21                                                     int32_t aModType) const {
  22   const bool reframe = [&] {
  23     if (aAttribute == nsGkAtoms::value) {
  24       // If we have an accesskey we need to recompute our -moz-label-content.
  25       // Otherwise this is handled by either the attribute text node, or
  26       // nsTextBoxFrame for crop="center".
  27       return aModType == MutationEvent_Binding::ADDITION ||
  28              aModType == MutationEvent_Binding::REMOVAL ||
  29              HasAttr(nsGkAtoms::accesskey);
  30     }
  31     if (aAttribute == nsGkAtoms::crop || aAttribute == nsGkAtoms::accesskey) {
  32       // value attr + crop="center" still uses nsTextBoxFrame. accesskey
  33       // requires reframing as per the above comment.
  34       return HasAttr(nsGkAtoms::value);
  35     }
  36     return false;
  37   }();
  38   if (reframe) {
  39     return nsChangeHint_ReconstructFrame;
  40   }
  41   return nsXULElement::GetAttributeChangeHint(aAttribute, aModType);
  42 }
  43
  44 JSObject* XULTextElement::WrapNode(JSContext* aCx,
  45                                    JS::Handle<JSObject*> aGivenProto) {
  46   return XULTextElement_Binding::Wrap(aCx, this, aGivenProto);
  47 }
  48
  49 }  // namespace mozilla::dom