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https://github.com/mozilla/gecko-dev.git
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51758cfc9b
Same rg + sed shenanigans as the first patch. There were two that could fail, both due to OOM: * HTMLInputElement::AfterSetAttr: If we fail (only in the type=range case) we end up with an old value without it being clamped by min/max/step. * HTMLBodyElement::AfterSetAttr: If we fail we won't peek up the DocShell's frame margins and styling could be incorrect. That seems better than having to deal with broken states after we've already set the attribute. Depends on D176069 Differential Revision: https://phabricator.services.mozilla.com/D176070
337 lines
12 KiB
C++
337 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "HTMLBodyElement.h"
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#include "mozilla/dom/BindContext.h"
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#include "mozilla/dom/HTMLBodyElementBinding.h"
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#include "mozilla/EditorBase.h"
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#include "mozilla/MappedDeclarations.h"
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#include "mozilla/HTMLEditor.h"
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#include "mozilla/TextEditor.h"
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#include "nsAttrValueInlines.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsPresContext.h"
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#include "mozilla/dom/Document.h"
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#include "DocumentInlines.h"
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#include "nsDocShell.h"
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#include "nsHTMLStyleSheet.h"
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#include "nsMappedAttributes.h"
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#include "nsIDocShell.h"
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#include "nsGlobalWindow.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT(Body)
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namespace mozilla::dom {
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//----------------------------------------------------------------------
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HTMLBodyElement::~HTMLBodyElement() = default;
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JSObject* HTMLBodyElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return HTMLBodyElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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NS_IMPL_ELEMENT_CLONE(HTMLBodyElement)
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bool HTMLBodyElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) {
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if (aNamespaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::bgcolor || aAttribute == nsGkAtoms::text ||
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aAttribute == nsGkAtoms::link || aAttribute == nsGkAtoms::alink ||
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aAttribute == nsGkAtoms::vlink) {
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return aResult.ParseColor(aValue);
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}
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if (aAttribute == nsGkAtoms::marginwidth ||
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aAttribute == nsGkAtoms::marginheight ||
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aAttribute == nsGkAtoms::topmargin ||
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aAttribute == nsGkAtoms::bottommargin ||
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aAttribute == nsGkAtoms::leftmargin ||
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aAttribute == nsGkAtoms::rightmargin) {
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return aResult.ParseNonNegativeIntValue(aValue);
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}
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}
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return nsGenericHTMLElement::ParseBackgroundAttribute(
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aNamespaceID, aAttribute, aValue, aResult) ||
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nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
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aMaybeScriptedPrincipal, aResult);
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}
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void HTMLBodyElement::MapAttributesIntoRule(
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const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
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// This is the one place where we try to set the same property
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// multiple times in presentation attributes. Servo does not support
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// querying if a property is set (because that is O(n) behavior
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// in ServoSpecifiedValues). Instead, we use the below values to keep
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// track of whether we have already set a property, and if so, what value
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// we set it to (which is used when handling margin
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// attributes from the containing frame element)
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int32_t bodyMarginWidth = -1;
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int32_t bodyMarginHeight = -1;
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int32_t bodyTopMargin = -1;
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int32_t bodyBottomMargin = -1;
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int32_t bodyLeftMargin = -1;
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int32_t bodyRightMargin = -1;
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const nsAttrValue* value;
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// if marginwidth/marginheight are set, reflect them as 'margin'
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value = aAttributes->GetAttr(nsGkAtoms::marginwidth);
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if (value && value->Type() == nsAttrValue::eInteger) {
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bodyMarginWidth = value->GetIntegerValue();
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if (bodyMarginWidth < 0) {
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bodyMarginWidth = 0;
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}
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_left,
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(float)bodyMarginWidth);
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_right,
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(float)bodyMarginWidth);
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}
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value = aAttributes->GetAttr(nsGkAtoms::marginheight);
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if (value && value->Type() == nsAttrValue::eInteger) {
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bodyMarginHeight = value->GetIntegerValue();
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if (bodyMarginHeight < 0) {
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bodyMarginHeight = 0;
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}
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_top,
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(float)bodyMarginHeight);
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_bottom,
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(float)bodyMarginHeight);
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}
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// topmargin (IE-attribute)
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if (bodyMarginHeight == -1) {
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value = aAttributes->GetAttr(nsGkAtoms::topmargin);
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if (value && value->Type() == nsAttrValue::eInteger) {
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bodyTopMargin = value->GetIntegerValue();
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if (bodyTopMargin < 0) {
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bodyTopMargin = 0;
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}
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_top,
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(float)bodyTopMargin);
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}
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}
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// bottommargin (IE-attribute)
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if (bodyMarginHeight == -1) {
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value = aAttributes->GetAttr(nsGkAtoms::bottommargin);
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if (value && value->Type() == nsAttrValue::eInteger) {
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bodyBottomMargin = value->GetIntegerValue();
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if (bodyBottomMargin < 0) {
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bodyBottomMargin = 0;
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}
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_bottom,
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(float)bodyBottomMargin);
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}
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}
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// leftmargin (IE-attribute)
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if (bodyMarginWidth == -1) {
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value = aAttributes->GetAttr(nsGkAtoms::leftmargin);
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if (value && value->Type() == nsAttrValue::eInteger) {
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bodyLeftMargin = value->GetIntegerValue();
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if (bodyLeftMargin < 0) {
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bodyLeftMargin = 0;
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}
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_left,
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(float)bodyLeftMargin);
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}
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}
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// rightmargin (IE-attribute)
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if (bodyMarginWidth == -1) {
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value = aAttributes->GetAttr(nsGkAtoms::rightmargin);
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if (value && value->Type() == nsAttrValue::eInteger) {
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bodyRightMargin = value->GetIntegerValue();
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if (bodyRightMargin < 0) {
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bodyRightMargin = 0;
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}
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_right,
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(float)bodyRightMargin);
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}
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}
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// if marginwidth or marginheight is set in the <frame> and not set in the
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// <body> reflect them as margin in the <body>
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if (bodyMarginWidth == -1 || bodyMarginHeight == -1) {
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if (nsDocShell* ds = nsDocShell::Cast(aDecls.Document()->GetDocShell())) {
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CSSIntSize margins = ds->GetFrameMargins();
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int32_t frameMarginWidth = margins.width;
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int32_t frameMarginHeight = margins.height;
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if (bodyMarginWidth == -1 && frameMarginWidth >= 0) {
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if (bodyLeftMargin == -1) {
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_left,
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(float)frameMarginWidth);
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}
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if (bodyRightMargin == -1) {
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_right,
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(float)frameMarginWidth);
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}
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}
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if (bodyMarginHeight == -1 && frameMarginHeight >= 0) {
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if (bodyTopMargin == -1) {
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_top,
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(float)frameMarginHeight);
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}
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if (bodyBottomMargin == -1) {
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aDecls.SetPixelValueIfUnset(eCSSProperty_margin_bottom,
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(float)frameMarginHeight);
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}
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}
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}
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}
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// When display if first asked for, go ahead and get our colors set up.
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if (nsHTMLStyleSheet* styleSheet =
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aDecls.Document()->GetAttributeStyleSheet()) {
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nscolor color;
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value = aAttributes->GetAttr(nsGkAtoms::link);
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if (value && value->GetColorValue(color)) {
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styleSheet->SetLinkColor(color);
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}
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value = aAttributes->GetAttr(nsGkAtoms::alink);
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if (value && value->GetColorValue(color)) {
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styleSheet->SetActiveLinkColor(color);
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}
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value = aAttributes->GetAttr(nsGkAtoms::vlink);
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if (value && value->GetColorValue(color)) {
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styleSheet->SetVisitedLinkColor(color);
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}
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}
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if (!aDecls.PropertyIsSet(eCSSProperty_color)) {
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// color: color
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nscolor color;
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value = aAttributes->GetAttr(nsGkAtoms::text);
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if (value && value->GetColorValue(color)) {
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aDecls.SetColorValue(eCSSProperty_color, color);
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}
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}
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nsGenericHTMLElement::MapBackgroundAttributesInto(aAttributes, aDecls);
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aDecls);
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}
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nsMapRuleToAttributesFunc HTMLBodyElement::GetAttributeMappingFunction() const {
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return &MapAttributesIntoRule;
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}
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NS_IMETHODIMP_(bool)
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HTMLBodyElement::IsAttributeMapped(const nsAtom* aAttribute) const {
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static const MappedAttributeEntry attributes[] = {
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{nsGkAtoms::link},
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{nsGkAtoms::vlink},
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{nsGkAtoms::alink},
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{nsGkAtoms::text},
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{nsGkAtoms::marginwidth},
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{nsGkAtoms::marginheight},
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{nsGkAtoms::topmargin},
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{nsGkAtoms::rightmargin},
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{nsGkAtoms::bottommargin},
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{nsGkAtoms::leftmargin},
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{nullptr},
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};
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static const MappedAttributeEntry* const map[] = {
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attributes,
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sCommonAttributeMap,
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sBackgroundAttributeMap,
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};
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return FindAttributeDependence(aAttribute, map);
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}
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already_AddRefed<EditorBase> HTMLBodyElement::GetAssociatedEditor() {
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MOZ_ASSERT(!GetTextEditorInternal());
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// Make sure this is the actual body of the document
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if (this != OwnerDoc()->GetBodyElement()) {
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return nullptr;
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}
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// For designmode, try to get document's editor
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nsPresContext* presContext = GetPresContext(eForComposedDoc);
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if (!presContext) {
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return nullptr;
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}
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nsCOMPtr<nsIDocShell> docShell = presContext->GetDocShell();
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if (!docShell) {
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return nullptr;
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}
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RefPtr<HTMLEditor> htmlEditor = docShell->GetHTMLEditor();
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return htmlEditor.forget();
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}
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bool HTMLBodyElement::IsEventAttributeNameInternal(nsAtom* aName) {
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return nsContentUtils::IsEventAttributeName(
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aName, EventNameType_HTML | EventNameType_HTMLBodyOrFramesetOnly);
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}
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nsresult HTMLBodyElement::BindToTree(BindContext& aContext, nsINode& aParent) {
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nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
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NS_ENSURE_SUCCESS(rv, rv);
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return mAttrs.ForceMapped(this, &aContext.OwnerDoc());
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}
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void HTMLBodyElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify) {
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nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue, aOldValue,
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aSubjectPrincipal, aNotify);
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// If the last mapped attribute was removed, don't clear the
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// nsMappedAttributes, our style can still depend on the containing frame
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// element.
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if (!aValue && IsAttributeMapped(aName)) {
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Unused << mAttrs.ForceMapped(this, OwnerDoc());
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}
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}
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#define EVENT(name_, id_, type_, \
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struct_) /* nothing; handled by the superclass */
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// nsGenericHTMLElement::GetOnError returns
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// already_AddRefed<EventHandlerNonNull> while other getters return
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// EventHandlerNonNull*, so allow passing in the type to use here.
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#define WINDOW_EVENT_HELPER(name_, type_) \
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type_* HTMLBodyElement::GetOn##name_() { \
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if (nsPIDOMWindowInner* win = OwnerDoc()->GetInnerWindow()) { \
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nsGlobalWindowInner* globalWin = nsGlobalWindowInner::Cast(win); \
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return globalWin->GetOn##name_(); \
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} \
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return nullptr; \
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} \
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void HTMLBodyElement::SetOn##name_(type_* handler) { \
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nsPIDOMWindowInner* win = OwnerDoc()->GetInnerWindow(); \
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if (!win) { \
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return; \
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} \
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\
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nsGlobalWindowInner* globalWin = nsGlobalWindowInner::Cast(win); \
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return globalWin->SetOn##name_(handler); \
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}
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#define WINDOW_EVENT(name_, id_, type_, struct_) \
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WINDOW_EVENT_HELPER(name_, EventHandlerNonNull)
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#define BEFOREUNLOAD_EVENT(name_, id_, type_, struct_) \
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WINDOW_EVENT_HELPER(name_, OnBeforeUnloadEventHandlerNonNull)
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#include "mozilla/EventNameList.h" // IWYU pragma: keep
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#undef BEFOREUNLOAD_EVENT
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#undef WINDOW_EVENT
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#undef WINDOW_EVENT_HELPER
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#undef EVENT
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} // namespace mozilla::dom
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