layout/forms/nsSearchControlFrame.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 "nsSearchControlFrame.h"
   8
   9 #include "HTMLInputElement.h"
  10 #include "mozilla/PresShell.h"
  11 #include "nsGkAtoms.h"
  12 #include "nsNameSpaceManager.h"
  13 #include "nsStyleConsts.h"
  14 #include "nsContentUtils.h"
  15 #include "nsContentCreatorFunctions.h"
  16 #include "nsCSSPseudoElements.h"
  17 #include "nsICSSDeclaration.h"
  18
  19 #ifdef ACCESSIBILITY
  20 #  include "mozilla/a11y/AccTypes.h"
  21 #endif
  22
  23 using namespace mozilla;
  24 using namespace mozilla::dom;
  25
  26 nsIFrame* NS_NewSearchControlFrame(PresShell* aPresShell,
  27                                    ComputedStyle* aStyle) {
  28   return new (aPresShell)
  29       nsSearchControlFrame(aStyle, aPresShell->GetPresContext());
  30 }
  31
  32 NS_IMPL_FRAMEARENA_HELPERS(nsSearchControlFrame)
  33
  34 NS_QUERYFRAME_HEAD(nsSearchControlFrame)
  35   NS_QUERYFRAME_ENTRY(nsSearchControlFrame)
  36 NS_QUERYFRAME_TAIL_INHERITING(nsTextControlFrame)
  37
  38 nsSearchControlFrame::nsSearchControlFrame(ComputedStyle* aStyle,
  39                                            nsPresContext* aPresContext)
  40     : nsTextControlFrame(aStyle, aPresContext, kClassID) {}
  41
  42 void nsSearchControlFrame::Destroy(DestroyContext& aContext) {
  43   aContext.AddAnonymousContent(mClearButton.forget());
  44   nsTextControlFrame::Destroy(aContext);
  45 }
  46
  47 nsresult nsSearchControlFrame::CreateAnonymousContent(
  48     nsTArray<ContentInfo>& aElements) {
  49   // We create an anonymous tree for our input element that is structured as
  50   // follows:
  51   //
  52   // input
  53   //   div    - placeholder
  54   //   div    - preview div
  55   //   div    - editor root
  56   //   button - clear button
  57   //
  58   // If you change this, be careful to change the order of stuff in
  59   // AppendAnonymousContentTo.
  60
  61   nsTextControlFrame::CreateAnonymousContent(aElements);
  62
  63   // FIXME: We could use nsTextControlFrame making the show password buttton
  64   // code a bit more generic, or rename this frame and use it for password
  65   // inputs.
  66   //
  67   // Create the ::-moz-search-clear-button pseudo-element:
  68   mClearButton = MakeAnonElement(PseudoStyleType::mozSearchClearButton, nullptr,
  69                                  nsGkAtoms::button);
  70
  71   aElements.AppendElement(mClearButton);
  72
  73   return NS_OK;
  74 }
  75
  76 void nsSearchControlFrame::AppendAnonymousContentTo(
  77     nsTArray<nsIContent*>& aElements, uint32_t aFilter) {
  78   nsTextControlFrame::AppendAnonymousContentTo(aElements, aFilter);
  79   if (mClearButton) {
  80     aElements.AppendElement(mClearButton);
  81   }
  82 }