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gecko-dev
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gecko-dev/dom/html/HTMLBodyElement.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "HTMLBodyElement.h"
#include "mozilla/dom/HTMLBodyElementBinding.h"
#include "nsAttrValueInlines.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIDocument.h"
#include "nsHTMLStyleSheet.h"
#include "nsIEditor.h"
#include "nsMappedAttributes.h"
#include "nsRuleData.h"
#include "nsIDocShell.h"
#include "nsRuleWalker.h"
#include "nsGlobalWindow.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(Body)
namespace mozilla {
namespace dom {
//----------------------------------------------------------------------
BodyRule::BodyRule(HTMLBodyElement* aPart)
: mPart(aPart)
{
}
BodyRule::~BodyRule()
{
}
NS_IMPL_ISUPPORTS(BodyRule, nsIStyleRule)
/* virtual */ void
BodyRule::MapRuleInfoInto(nsRuleData* aData)
{
if (!(aData->mSIDs & NS_STYLE_INHERIT_BIT(Margin)) || !mPart)
return; // We only care about margins.
int32_t bodyMarginWidth = -1;
int32_t bodyMarginHeight = -1;
int32_t bodyTopMargin = -1;
int32_t bodyBottomMargin = -1;
int32_t bodyLeftMargin = -1;
int32_t bodyRightMargin = -1;
// check the mode (fortunately, the ruleData has a presContext for us to use!)
NS_ASSERTION(aData->mPresContext, "null presContext in ruleNode was unexpected");
nsCompatibility mode = aData->mPresContext->CompatibilityMode();
const nsAttrValue* value;
if (mPart->GetAttrCount() > 0) {
// if marginwidth/marginheight are set, reflect them as 'margin'
value = mPart->GetParsedAttr(nsGkAtoms::marginwidth);
if (value && value->Type() == nsAttrValue::eInteger) {
bodyMarginWidth = value->GetIntegerValue();
if (bodyMarginWidth < 0) bodyMarginWidth = 0;
nsCSSValue* marginLeft = aData->ValueForMarginLeft();
if (marginLeft->GetUnit() == eCSSUnit_Null)
marginLeft->SetFloatValue((float)bodyMarginWidth, eCSSUnit_Pixel);
nsCSSValue* marginRight = aData->ValueForMarginRight();
if (marginRight->GetUnit() == eCSSUnit_Null)
marginRight->SetFloatValue((float)bodyMarginWidth, eCSSUnit_Pixel);
}
value = mPart->GetParsedAttr(nsGkAtoms::marginheight);
if (value && value->Type() == nsAttrValue::eInteger) {
bodyMarginHeight = value->GetIntegerValue();
if (bodyMarginHeight < 0) bodyMarginHeight = 0;
nsCSSValue* marginTop = aData->ValueForMarginTop();
if (marginTop->GetUnit() == eCSSUnit_Null)
marginTop->SetFloatValue((float)bodyMarginHeight, eCSSUnit_Pixel);
nsCSSValue* marginBottom = aData->ValueForMarginBottom();
if (marginBottom->GetUnit() == eCSSUnit_Null)
marginBottom->SetFloatValue((float)bodyMarginHeight, eCSSUnit_Pixel);
}
// topmargin (IE-attribute)
value = mPart->GetParsedAttr(nsGkAtoms::topmargin);
if (value && value->Type() == nsAttrValue::eInteger) {
bodyTopMargin = value->GetIntegerValue();
if (bodyTopMargin < 0) bodyTopMargin = 0;
nsCSSValue* marginTop = aData->ValueForMarginTop();
if (marginTop->GetUnit() == eCSSUnit_Null)
marginTop->SetFloatValue((float)bodyTopMargin, eCSSUnit_Pixel);
}
// bottommargin (IE-attribute)
value = mPart->GetParsedAttr(nsGkAtoms::bottommargin);
if (value && value->Type() == nsAttrValue::eInteger) {
bodyBottomMargin = value->GetIntegerValue();
if (bodyBottomMargin < 0) bodyBottomMargin = 0;
nsCSSValue* marginBottom = aData->ValueForMarginBottom();
if (marginBottom->GetUnit() == eCSSUnit_Null)
marginBottom->SetFloatValue((float)bodyBottomMargin, eCSSUnit_Pixel);
}
// leftmargin (IE-attribute)
value = mPart->GetParsedAttr(nsGkAtoms::leftmargin);
if (value && value->Type() == nsAttrValue::eInteger) {
bodyLeftMargin = value->GetIntegerValue();
if (bodyLeftMargin < 0) bodyLeftMargin = 0;
nsCSSValue* marginLeft = aData->ValueForMarginLeft();
if (marginLeft->GetUnit() == eCSSUnit_Null)
marginLeft->SetFloatValue((float)bodyLeftMargin, eCSSUnit_Pixel);
}
// rightmargin (IE-attribute)
value = mPart->GetParsedAttr(nsGkAtoms::rightmargin);
if (value && value->Type() == nsAttrValue::eInteger) {
bodyRightMargin = value->GetIntegerValue();
if (bodyRightMargin < 0) bodyRightMargin = 0;
nsCSSValue* marginRight = aData->ValueForMarginRight();
if (marginRight->GetUnit() == eCSSUnit_Null)
marginRight->SetFloatValue((float)bodyRightMargin, eCSSUnit_Pixel);
}
}
// if marginwidth or marginheight is set in the <frame> and not set in the <body>
// reflect them as margin in the <body>
if (bodyMarginWidth == -1 || bodyMarginHeight == -1) {
nsCOMPtr<nsIDocShell> docShell(aData->mPresContext->GetDocShell());
if (docShell) {
nscoord frameMarginWidth=-1; // default value
nscoord frameMarginHeight=-1; // default value
docShell->GetMarginWidth(&frameMarginWidth); // -1 indicates not set
docShell->GetMarginHeight(&frameMarginHeight);
if ((frameMarginWidth >= 0) && (bodyMarginWidth == -1)) { // set in <frame> & not in <body>
if (eCompatibility_NavQuirks == mode) {
if ((bodyMarginHeight == -1) && (0 > frameMarginHeight)) // nav quirk
frameMarginHeight = 0;
}
}
if ((frameMarginHeight >= 0) && (bodyMarginHeight == -1)) { // set in <frame> & not in <body>
if (eCompatibility_NavQuirks == mode) {
if ((bodyMarginWidth == -1) && (0 > frameMarginWidth)) // nav quirk
frameMarginWidth = 0;
}
}
if ((bodyMarginWidth == -1) && (frameMarginWidth >= 0)) {
nsCSSValue* marginLeft = aData->ValueForMarginLeft();
if (marginLeft->GetUnit() == eCSSUnit_Null)
marginLeft->SetFloatValue((float)frameMarginWidth, eCSSUnit_Pixel);
nsCSSValue* marginRight = aData->ValueForMarginRight();
if (marginRight->GetUnit() == eCSSUnit_Null)
marginRight->SetFloatValue((float)frameMarginWidth, eCSSUnit_Pixel);
}
if ((bodyMarginHeight == -1) && (frameMarginHeight >= 0)) {
nsCSSValue* marginTop = aData->ValueForMarginTop();
if (marginTop->GetUnit() == eCSSUnit_Null)
marginTop->SetFloatValue((float)frameMarginHeight, eCSSUnit_Pixel);
nsCSSValue* marginBottom = aData->ValueForMarginBottom();
if (marginBottom->GetUnit() == eCSSUnit_Null)
marginBottom->SetFloatValue((float)frameMarginHeight, eCSSUnit_Pixel);
}
}
}
}
#ifdef DEBUG
/* virtual */ void
BodyRule::List(FILE* out, int32_t aIndent) const
{
nsAutoCString indent;
for (int32_t index = aIndent; --index >= 0; ) {
indent.AppendLiteral(" ");
}
fprintf_stderr(out, "%s[body rule] {}\n", indent.get());
}
#endif
//----------------------------------------------------------------------
HTMLBodyElement::~HTMLBodyElement()
{
if (mContentStyleRule) {
mContentStyleRule->mPart = nullptr;
}
}
JSObject*
HTMLBodyElement::WrapNode(JSContext *aCx)
{
return HTMLBodyElementBinding::Wrap(aCx, this);
}
NS_IMPL_ISUPPORTS_INHERITED(HTMLBodyElement, nsGenericHTMLElement,
nsIDOMHTMLBodyElement)
NS_IMPL_ELEMENT_CLONE(HTMLBodyElement)
NS_IMETHODIMP
HTMLBodyElement::SetBackground(const nsAString& aBackground)
{
ErrorResult rv;
SetBackground(aBackground, rv);
return rv.ErrorCode();
}
NS_IMETHODIMP
HTMLBodyElement::GetBackground(nsAString& aBackground)
{
DOMString background;
GetBackground(background);
background.ToString(aBackground);
return NS_OK;
}
NS_IMETHODIMP
HTMLBodyElement::SetVLink(const nsAString& aVLink)
{
ErrorResult rv;
SetVLink(aVLink, rv);
return rv.ErrorCode();
}
NS_IMETHODIMP
HTMLBodyElement::GetVLink(nsAString& aVLink)
{
DOMString vLink;
GetVLink(vLink);
vLink.ToString(aVLink);
return NS_OK;
}
NS_IMETHODIMP
HTMLBodyElement::SetALink(const nsAString& aALink)
{
ErrorResult rv;
SetALink(aALink, rv);
return rv.ErrorCode();
}
NS_IMETHODIMP
HTMLBodyElement::GetALink(nsAString& aALink)
{
DOMString aLink;
GetALink(aLink);
aLink.ToString(aALink);
return NS_OK;
}
NS_IMETHODIMP
HTMLBodyElement::SetLink(const nsAString& aLink)
{
ErrorResult rv;
SetLink(aLink, rv);
return rv.ErrorCode();
}
NS_IMETHODIMP
HTMLBodyElement::GetLink(nsAString& aLink)
{
DOMString link;
GetLink(link);
link.ToString(aLink);
return NS_OK;
}
NS_IMETHODIMP
HTMLBodyElement::SetText(const nsAString& aText)
{
ErrorResult rv;
SetText(aText, rv);
return rv.ErrorCode();
}
NS_IMETHODIMP
HTMLBodyElement::GetText(nsAString& aText)
{
DOMString text;
GetText(text);
text.ToString(aText);
return NS_OK;
}
NS_IMETHODIMP
HTMLBodyElement::SetBgColor(const nsAString& aBgColor)
{
ErrorResult rv;
SetBgColor(aBgColor, rv);
return rv.ErrorCode();
}
NS_IMETHODIMP
HTMLBodyElement::GetBgColor(nsAString& aBgColor)
{
DOMString bgColor;
GetBgColor(bgColor);
bgColor.ToString(aBgColor);
return NS_OK;
}
bool
HTMLBodyElement::ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aAttribute == nsGkAtoms::bgcolor ||
aAttribute == nsGkAtoms::text ||
aAttribute == nsGkAtoms::link ||
aAttribute == nsGkAtoms::alink ||
aAttribute == nsGkAtoms::vlink) {
return aResult.ParseColor(aValue);
}
if (aAttribute == nsGkAtoms::marginwidth ||
aAttribute == nsGkAtoms::marginheight ||
aAttribute == nsGkAtoms::topmargin ||
aAttribute == nsGkAtoms::bottommargin ||
aAttribute == nsGkAtoms::leftmargin ||
aAttribute == nsGkAtoms::rightmargin) {
return aResult.ParseIntWithBounds(aValue, 0);
}
}
return nsGenericHTMLElement::ParseBackgroundAttribute(aNamespaceID,
aAttribute, aValue,
aResult) ||
nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aResult);
}
void
HTMLBodyElement::UnbindFromTree(bool aDeep, bool aNullParent)
{
if (mContentStyleRule) {
mContentStyleRule->mPart = nullptr;
mContentStyleRule = nullptr;
}
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
}
void
HTMLBodyElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
nsRuleData* aData)
{
if (aData->mSIDs & NS_STYLE_INHERIT_BIT(Display)) {
// When display if first asked for, go ahead and get our colors set up.
nsIPresShell *presShell = aData->mPresContext->GetPresShell();
if (presShell) {
nsIDocument *doc = presShell->GetDocument();
if (doc) {
nsHTMLStyleSheet* styleSheet = doc->GetAttributeStyleSheet();
if (styleSheet) {
const nsAttrValue* value;
nscolor color;
value = aAttributes->GetAttr(nsGkAtoms::link);
if (value && value->GetColorValue(color)) {
styleSheet->SetLinkColor(color);
}
value = aAttributes->GetAttr(nsGkAtoms::alink);
if (value && value->GetColorValue(color)) {
styleSheet->SetActiveLinkColor(color);
}
value = aAttributes->GetAttr(nsGkAtoms::vlink);
if (value && value->GetColorValue(color)) {
styleSheet->SetVisitedLinkColor(color);
}
}
}
}
}
if (aData->mSIDs & NS_STYLE_INHERIT_BIT(Color)) {
nsCSSValue *colorValue = aData->ValueForColor();
if (colorValue->GetUnit() == eCSSUnit_Null &&
aData->mPresContext->UseDocumentColors()) {
// color: color
nscolor color;
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::text);
if (value && value->GetColorValue(color))
colorValue->SetColorValue(color);
}
}
nsGenericHTMLElement::MapBackgroundAttributesInto(aAttributes, aData);
nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData);
}
nsMapRuleToAttributesFunc
HTMLBodyElement::GetAttributeMappingFunction() const
{
return &MapAttributesIntoRule;
}
NS_IMETHODIMP
HTMLBodyElement::WalkContentStyleRules(nsRuleWalker* aRuleWalker)
{
nsGenericHTMLElement::WalkContentStyleRules(aRuleWalker);
if (!mContentStyleRule && IsInDoc()) {
// XXXbz should this use OwnerDoc() or GetComposedDoc()?
// sXBL/XBL2 issue!
mContentStyleRule = new BodyRule(this);
}
if (aRuleWalker && mContentStyleRule) {
aRuleWalker->Forward(mContentStyleRule);
}
return NS_OK;
}
NS_IMETHODIMP_(bool)
HTMLBodyElement::IsAttributeMapped(const nsIAtom* aAttribute) const
{
static const MappedAttributeEntry attributes[] = {
{ &nsGkAtoms::link },
{ &nsGkAtoms::vlink },
{ &nsGkAtoms::alink },
{ &nsGkAtoms::text },
// These aren't mapped through attribute mapping, but they are
// mapped through a style rule, so it is attribute dependent style.
// XXXldb But we don't actually replace the body rule when we have
// dynamic changes...
{ &nsGkAtoms::marginwidth },
{ &nsGkAtoms::marginheight },
{ nullptr },
};
static const MappedAttributeEntry* const map[] = {
attributes,
sCommonAttributeMap,
sBackgroundAttributeMap,
};
return FindAttributeDependence(aAttribute, map);
}
already_AddRefed<nsIEditor>
HTMLBodyElement::GetAssociatedEditor()
{
nsCOMPtr<nsIEditor> editor = GetEditorInternal();
if (editor) {
return editor.forget();
}
// Make sure this is the actual body of the document
if (!IsCurrentBodyElement()) {
return nullptr;
}
// For designmode, try to get document's editor
nsPresContext* presContext = GetPresContext(eForComposedDoc);
if (!presContext) {
return nullptr;
}
nsCOMPtr<nsIDocShell> docShell = presContext->GetDocShell();
if (!docShell) {
return nullptr;
}
docShell->GetEditor(getter_AddRefs(editor));
return editor.forget();
}
bool
HTMLBodyElement::IsEventAttributeName(nsIAtom *aName)
{
return nsContentUtils::IsEventAttributeName(aName,
EventNameType_HTML |
EventNameType_HTMLBodyOrFramesetOnly);
}
#define EVENT(name_, id_, type_, struct_) /* nothing; handled by the superclass */
// nsGenericHTMLElement::GetOnError returns
// already_AddRefed<EventHandlerNonNull> while other getters return
// EventHandlerNonNull*, so allow passing in the type to use here.
#define WINDOW_EVENT_HELPER(name_, type_) \
type_* \
HTMLBodyElement::GetOn##name_() \
{ \
nsPIDOMWindow* win = OwnerDoc()->GetInnerWindow(); \
if (win) { \
nsCOMPtr<nsISupports> supports = do_QueryInterface(win); \
nsGlobalWindow* globalWin = nsGlobalWindow::FromSupports(supports); \
return globalWin->GetOn##name_(); \
} \
return nullptr; \
} \
void \
HTMLBodyElement::SetOn##name_(type_* handler) \
{ \
nsPIDOMWindow* win = OwnerDoc()->GetInnerWindow(); \
if (!win) { \
return; \
} \
\
nsCOMPtr<nsISupports> supports = do_QueryInterface(win); \
nsGlobalWindow* globalWin = nsGlobalWindow::FromSupports(supports); \
return globalWin->SetOn##name_(handler); \
}
#define WINDOW_EVENT(name_, id_, type_, struct_) \
WINDOW_EVENT_HELPER(name_, EventHandlerNonNull)
#define BEFOREUNLOAD_EVENT(name_, id_, type_, struct_) \
WINDOW_EVENT_HELPER(name_, OnBeforeUnloadEventHandlerNonNull)
#include "mozilla/EventNameList.h" // IWYU pragma: keep
#undef BEFOREUNLOAD_EVENT
#undef WINDOW_EVENT
#undef WINDOW_EVENT_HELPER
#undef EVENT
} // namespace dom
} // namespace mozilla
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