The Tor Browser: layout/inspector/inDOMUtils.cpp@b8a032363ba2 (annotated)

layout/inspector/inDOMUtils.cpp@b8a032363ba2 (annotated)

layout/inspector/inDOMUtils.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- 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 "mozilla/ArrayUtils.h"
 #include "mozilla/EventStates.h"
 #include "inDOMUtils.h"
 #include "inLayoutUtils.h"
 #include "nsIServiceManager.h"
 #include "nsISupportsArray.h"
 #include "nsString.h"
 #include "nsIDOMElement.h"
 #include "nsIDocument.h"
 #include "nsIPresShell.h"
 #include "nsIDOMDocument.h"
 #include "nsIDOMCharacterData.h"
 #include "nsRuleNode.h"
 #include "nsIStyleRule.h"
 #include "mozilla/css/StyleRule.h"
 #include "nsICSSStyleRuleDOMWrapper.h"
 #include "nsIDOMWindow.h"
 #include "nsXBLBinding.h"
 #include "nsXBLPrototypeBinding.h"
 #include "nsIMutableArray.h"
 #include "nsBindingManager.h"
 #include "ChildIterator.h"
 #include "nsComputedDOMStyle.h"
 #include "mozilla/EventStateManager.h"
 #include "nsIAtom.h"
 #include "nsRange.h"
 #include "nsContentList.h"
 #include "mozilla/dom/Element.h"
 #include "nsCSSStyleSheet.h"
 #include "nsRuleWalker.h"
 #include "nsRuleProcessorData.h"
 #include "nsCSSRuleProcessor.h"
 #include "mozilla/dom/InspectorUtilsBinding.h"
 #include "nsCSSProps.h"
 #include "nsColor.h"
 #include "nsStyleSet.h"
 using namespace mozilla;
 using namespace mozilla::css;
 using namespace mozilla::dom;
 ///////////////////////////////////////////////////////////////////////////////
 inDOMUtils::inDOMUtils()
 {
 }
 inDOMUtils::~inDOMUtils()
 {
 }
 NS_IMPL_ISUPPORTS(inDOMUtils, inIDOMUtils)
 ///////////////////////////////////////////////////////////////////////////////
 // inIDOMUtils
 NS_IMETHODIMP
 inDOMUtils::GetAllStyleSheets(nsIDOMDocument *aDocument, uint32_t *aLength,
                               nsISupports ***aSheets)
 {
   NS_ENSURE_ARG_POINTER(aDocument);
   nsCOMArray<nsISupports> sheets;
   nsCOMPtr<nsIDocument> document = do_QueryInterface(aDocument);
   MOZ_ASSERT(document);
   // Get the agent, then user sheets in the style set.
   nsIPresShell* presShell = document->GetShell();
   if (presShell) {
     nsStyleSet* styleSet = presShell->StyleSet();
     nsStyleSet::sheetType sheetType = nsStyleSet::eAgentSheet;
     for (int32_t i = 0; i < styleSet->SheetCount(sheetType); i++) {
       sheets.AppendElement(styleSet->StyleSheetAt(sheetType, i));
     }
     sheetType = nsStyleSet::eUserSheet;
     for (int32_t i = 0; i < styleSet->SheetCount(sheetType); i++) {
       sheets.AppendElement(styleSet->StyleSheetAt(sheetType, i));
     }
   }
   // Get the document sheets.
   for (int32_t i = 0; i < document->GetNumberOfStyleSheets(); i++) {
     sheets.AppendElement(document->GetStyleSheetAt(i));
   }
   nsISupports** ret = static_cast<nsISupports**>(NS_Alloc(sheets.Count() *
                                                  sizeof(nsISupports*)));
   for (int32_t i = 0; i < sheets.Count(); i++) {
     NS_ADDREF(ret[i] = sheets[i]);
   }
   *aLength = sheets.Count();
   *aSheets = ret;
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::IsIgnorableWhitespace(nsIDOMCharacterData *aDataNode,
                                   bool *aReturn)
 {
   NS_PRECONDITION(aReturn, "Must have an out parameter");
   NS_ENSURE_ARG_POINTER(aDataNode);
   *aReturn = false;
   nsCOMPtr<nsIContent> content = do_QueryInterface(aDataNode);
   NS_ASSERTION(content, "Does not implement nsIContent!");
   if (!content->TextIsOnlyWhitespace()) {
     return NS_OK;
   }
   // Okay.  We have only white space.  Let's check the white-space
   // property now and make sure that this isn't preformatted text...
   nsIFrame* frame = content->GetPrimaryFrame();
   if (frame) {
     const nsStyleText* text = frame->StyleText();
     *aReturn = !text->WhiteSpaceIsSignificant();
   }
   else {
     // empty inter-tag text node without frame, e.g., in between <table>\n<tr>
     *aReturn = true;
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetParentForNode(nsIDOMNode* aNode,
                              bool aShowingAnonymousContent,
                              nsIDOMNode** aParent)
 {
   NS_ENSURE_ARG_POINTER(aNode);
   // First do the special cases -- document nodes and anonymous content
   nsCOMPtr<nsIDocument> doc(do_QueryInterface(aNode));
   nsCOMPtr<nsIDOMNode> parent;
   if (doc) {
     parent = inLayoutUtils::GetContainerFor(*doc);
   } else if (aShowingAnonymousContent) {
     nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
     if (content) {
       nsIContent* bparent = content->GetXBLInsertionParent();
       parent = do_QueryInterface(bparent);
     }
   }
   if (!parent) {
     // Ok, just get the normal DOM parent node
     aNode->GetParentNode(getter_AddRefs(parent));
   }
   NS_IF_ADDREF(*aParent = parent);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetChildrenForNode(nsIDOMNode* aNode,
                                bool aShowingAnonymousContent,
                                nsIDOMNodeList** aChildren)
 {
   NS_ENSURE_ARG_POINTER(aNode);
   NS_PRECONDITION(aChildren, "Must have an out parameter");
   nsCOMPtr<nsIDOMNodeList> kids;
   if (aShowingAnonymousContent) {
     nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
     if (content) {
       kids = content->GetChildren(nsIContent::eAllChildren);
     }
   }
   if (!kids) {
     aNode->GetChildNodes(getter_AddRefs(kids));
   }
   kids.forget(aChildren);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetCSSStyleRules(nsIDOMElement *aElement,
                              const nsAString& aPseudo,
                              nsISupportsArray **_retval)
 {
   NS_ENSURE_ARG_POINTER(aElement);
   *_retval = nullptr;
   nsCOMPtr<nsIAtom> pseudoElt;
   if (!aPseudo.IsEmpty()) {
     pseudoElt = do_GetAtom(aPseudo);
   }
   nsRuleNode* ruleNode = nullptr;
   nsCOMPtr<Element> element = do_QueryInterface(aElement);
   NS_ENSURE_STATE(element);
   nsRefPtr<nsStyleContext> styleContext;
   GetRuleNodeForElement(element, pseudoElt, getter_AddRefs(styleContext), &ruleNode);
   if (!ruleNode) {
     // This can fail for elements that are not in the document or
     // if the document they're in doesn't have a presshell.  Bail out.
     return NS_OK;
   }
   nsCOMPtr<nsISupportsArray> rules;
   NS_NewISupportsArray(getter_AddRefs(rules));
   if (!rules) return NS_ERROR_OUT_OF_MEMORY;
   nsRefPtr<mozilla::css::StyleRule> cssRule;
   for ( ; !ruleNode->IsRoot(); ruleNode = ruleNode->GetParent()) {
     cssRule = do_QueryObject(ruleNode->GetRule());
     if (cssRule) {
       nsCOMPtr<nsIDOMCSSRule> domRule = cssRule->GetDOMRule();
       if (domRule)
         rules->InsertElementAt(domRule, 0);
     }
   }
   *_retval = rules;
   NS_ADDREF(*_retval);
   return NS_OK;
 }
 static already_AddRefed<StyleRule>
 GetRuleFromDOMRule(nsIDOMCSSStyleRule *aRule, ErrorResult& rv)
 {
   nsCOMPtr<nsICSSStyleRuleDOMWrapper> rule = do_QueryInterface(aRule);
   if (!rule) {
     rv.Throw(NS_ERROR_INVALID_POINTER);
     return nullptr;
   }
   nsRefPtr<StyleRule> cssrule;
   rv = rule->GetCSSStyleRule(getter_AddRefs(cssrule));
   if (rv.Failed()) {
     return nullptr;
   }
   if (!cssrule) {
     rv.Throw(NS_ERROR_FAILURE);
   }
   return cssrule.forget();
 }
 NS_IMETHODIMP
 inDOMUtils::GetRuleLine(nsIDOMCSSStyleRule *aRule, uint32_t *_retval)
 {
   ErrorResult rv;
   nsRefPtr<StyleRule> rule = GetRuleFromDOMRule(aRule, rv);
   if (rv.Failed()) {
     return rv.ErrorCode();
   }
   *_retval = rule->GetLineNumber();
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetRuleColumn(nsIDOMCSSStyleRule *aRule, uint32_t *_retval)
 {
   ErrorResult rv;
   nsRefPtr<StyleRule> rule = GetRuleFromDOMRule(aRule, rv);
   if (rv.Failed()) {
     return rv.ErrorCode();
   }
   *_retval = rule->GetColumnNumber();
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetSelectorCount(nsIDOMCSSStyleRule* aRule, uint32_t *aCount)
 {
   ErrorResult rv;
   nsRefPtr<StyleRule> rule = GetRuleFromDOMRule(aRule, rv);
   if (rv.Failed()) {
     return rv.ErrorCode();
   }
   uint32_t count = 0;
   for (nsCSSSelectorList* sel = rule->Selector(); sel; sel = sel->mNext) {
     ++count;
   }
   *aCount = count;
   return NS_OK;
 }
 static nsCSSSelectorList*
 GetSelectorAtIndex(nsIDOMCSSStyleRule* aRule, uint32_t aIndex, ErrorResult& rv)
 {
   nsRefPtr<StyleRule> rule = GetRuleFromDOMRule(aRule, rv);
   if (rv.Failed()) {
     return nullptr;
   }
   for (nsCSSSelectorList* sel = rule->Selector(); sel;
        sel = sel->mNext, --aIndex) {
     if (aIndex == 0) {
       return sel;
     }
   }
   // Ran out of selectors
   rv.Throw(NS_ERROR_INVALID_ARG);
   return nullptr;
 }
 NS_IMETHODIMP
 inDOMUtils::GetSelectorText(nsIDOMCSSStyleRule* aRule,
                             uint32_t aSelectorIndex,
                             nsAString& aText)
 {
   ErrorResult rv;
   nsCSSSelectorList* sel = GetSelectorAtIndex(aRule, aSelectorIndex, rv);
   if (rv.Failed()) {
     return rv.ErrorCode();
   }
   nsRefPtr<StyleRule> rule = GetRuleFromDOMRule(aRule, rv);
   MOZ_ASSERT(!rv.Failed(), "How could we get a selector but not a rule?");
   sel->mSelectors->ToString(aText, rule->GetStyleSheet(), false);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetSpecificity(nsIDOMCSSStyleRule* aRule,
                             uint32_t aSelectorIndex,
                             uint64_t* aSpecificity)
 {
   ErrorResult rv;
   nsCSSSelectorList* sel = GetSelectorAtIndex(aRule, aSelectorIndex, rv);
   if (rv.Failed()) {
     return rv.ErrorCode();
   }
   *aSpecificity = sel->mWeight;
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::SelectorMatchesElement(nsIDOMElement* aElement,
                                    nsIDOMCSSStyleRule* aRule,
                                    uint32_t aSelectorIndex,
                                    bool* aMatches)
 {
   nsCOMPtr<Element> element = do_QueryInterface(aElement);
   NS_ENSURE_ARG_POINTER(element);
   ErrorResult rv;
   nsCSSSelectorList* tail = GetSelectorAtIndex(aRule, aSelectorIndex, rv);
   if (rv.Failed()) {
     return rv.ErrorCode();
   }
   // We want just the one list item, not the whole list tail
   nsAutoPtr<nsCSSSelectorList> sel(tail->Clone(false));
   // SelectorListMatches does not handle selectors that begin with a
   // pseudo-element, which you can get from selectors like
   // |input::-moz-placeholder:hover|.  This function doesn't take
   // a pseudo-element nsIAtom*, so we know we can't match.
   if (sel->mSelectors->IsPseudoElement()) {
     *aMatches = false;
     return NS_OK;
   }
   element->OwnerDoc()->FlushPendingLinkUpdates();
   // XXXbz what exactly should we do with visited state here?
   TreeMatchContext matchingContext(false,
                                    nsRuleWalker::eRelevantLinkUnvisited,
                                    element->OwnerDoc(),
                                    TreeMatchContext::eNeverMatchVisited);
   *aMatches = nsCSSRuleProcessor::SelectorListMatches(element, matchingContext,
                                                       sel);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::IsInheritedProperty(const nsAString &aPropertyName, bool *_retval)
 {
   nsCSSProperty prop =
     nsCSSProps::LookupProperty(aPropertyName, nsCSSProps::eIgnoreEnabledState);
   if (prop == eCSSProperty_UNKNOWN) {
     *_retval = false;
     return NS_OK;
   }
   if (prop == eCSSPropertyExtra_variable) {
     *_retval = true;
     return NS_OK;
   }
   if (nsCSSProps::IsShorthand(prop)) {
     prop = nsCSSProps::SubpropertyEntryFor(prop)[0];
   }
   nsStyleStructID sid = nsCSSProps::kSIDTable[prop];
   *_retval = !nsCachedStyleData::IsReset(sid);
   return NS_OK;
 }
 extern const char* const kCSSRawProperties[];
 NS_IMETHODIMP
 inDOMUtils::GetCSSPropertyNames(uint32_t aFlags, uint32_t* aCount,
                                 char16_t*** aProps)
 {
   // maxCount is the largest number of properties we could have; our actual
   // number might be smaller because properties might be disabled.
   uint32_t maxCount;
   if (aFlags & EXCLUDE_SHORTHANDS) {
     maxCount = eCSSProperty_COUNT_no_shorthands;
   } else {
     maxCount = eCSSProperty_COUNT;
   }
   if (aFlags & INCLUDE_ALIASES) {
     maxCount += (eCSSProperty_COUNT_with_aliases - eCSSProperty_COUNT);
   }
   char16_t** props =
     static_cast<char16_t**>(nsMemory::Alloc(maxCount * sizeof(char16_t*)));
 #define DO_PROP(_prop)                                                  \
   PR_BEGIN_MACRO                                                        \
     nsCSSProperty cssProp = nsCSSProperty(_prop);                       \
     if (nsCSSProps::IsEnabled(cssProp)) {                               \
       props[propCount] =                                                \
         ToNewUnicode(nsDependentCString(kCSSRawProperties[_prop]));     \
       ++propCount;                                                      \
     }                                                                   \
   PR_END_MACRO
   // prop is the property id we're considering; propCount is how many properties
   // we've put into props so far.
   uint32_t prop = 0, propCount = 0;
   for ( ; prop < eCSSProperty_COUNT_no_shorthands; ++prop) {
     if (nsCSSProps::PropertyParseType(nsCSSProperty(prop)) !=
         CSS_PROPERTY_PARSE_INACCESSIBLE) {
       DO_PROP(prop);
     }
   }
   if (!(aFlags & EXCLUDE_SHORTHANDS)) {
     for ( ; prop < eCSSProperty_COUNT; ++prop) {
       // Some shorthands are also aliases
       if ((aFlags & INCLUDE_ALIASES) ||
           !nsCSSProps::PropHasFlags(nsCSSProperty(prop),
                                     CSS_PROPERTY_IS_ALIAS)) {
         DO_PROP(prop);
       }
     }
   }
   if (aFlags & INCLUDE_ALIASES) {
     for (prop = eCSSProperty_COUNT; prop < eCSSProperty_COUNT_with_aliases; ++prop) {
       DO_PROP(prop);
     }
   }
 #undef DO_PROP
   *aCount = propCount;
   *aProps = props;
   return NS_OK;
 }
 static void InsertNoDuplicates(nsTArray<nsString>& aArray,
                                const nsAString& aString)
 {
   size_t i = aArray.IndexOfFirstElementGt(aString);
   if (i > 0 && aArray[i-1].Equals(aString)) {
     return;
   }
   aArray.InsertElementAt(i, aString);
 }
 static void GetKeywordsForProperty(const nsCSSProperty aProperty,
                                    nsTArray<nsString>& aArray)
 {
   if (nsCSSProps::IsShorthand(aProperty)) {
     // Shorthand props have no keywords.
     return;
   }
   const nsCSSProps::KTableValue *keywordTable =
     nsCSSProps::kKeywordTableTable[aProperty];
   if (keywordTable && keywordTable != nsCSSProps::kBoxPropSourceKTable) {
     size_t i = 0;
     while (nsCSSKeyword(keywordTable[i]) != eCSSKeyword_UNKNOWN) {
       nsCSSKeyword word = nsCSSKeyword(keywordTable[i]);
       InsertNoDuplicates(aArray,
                          NS_ConvertASCIItoUTF16(nsCSSKeywords::GetStringValue(word)));
       // Increment counter by 2, because in this table every second
       // element is a nsCSSKeyword.
       i += 2;
     }
   }
 }
 static void GetColorsForProperty(const uint32_t aParserVariant,
                                  nsTArray<nsString>& aArray)
 {
   if (aParserVariant & VARIANT_COLOR) {
     // GetKeywordsForProperty and GetOtherValuesForProperty assume aArray is sorted,
     // and if aArray is not empty here, then it's not going to be sorted coming out.
     MOZ_ASSERT(aArray.Length() == 0);
     size_t size;
     const char * const *allColorNames = NS_AllColorNames(&size);
     for (size_t i = 0; i < size; i++) {
       CopyASCIItoUTF16(allColorNames[i], *aArray.AppendElement());
     }
   }
   return;
 }
 static void GetOtherValuesForProperty(const uint32_t aParserVariant,
                                       nsTArray<nsString>& aArray)
 {
   if (aParserVariant & VARIANT_AUTO) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("auto"));
   }
   if (aParserVariant & VARIANT_NORMAL) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("normal"));
   }
   if(aParserVariant & VARIANT_ALL) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("all"));
   }
   if (aParserVariant & VARIANT_NONE) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("none"));
   }
   if (aParserVariant & VARIANT_ELEMENT) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("-moz-element"));
   }
   if (aParserVariant & VARIANT_IMAGE_RECT) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("-moz-image-rect"));
   }
   if (aParserVariant & VARIANT_COLOR) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("rgb"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("hsl"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("rgba"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("hsla"));
   }
   if (aParserVariant & VARIANT_TIMING_FUNCTION) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("cubic-bezier"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("steps"));
   }
   if (aParserVariant & VARIANT_CALC) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("calc"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("-moz-calc"));
   }
   if (aParserVariant & VARIANT_URL) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("url"));
   }
   if (aParserVariant & VARIANT_GRADIENT) {
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("linear-gradient"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("radial-gradient"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("repeating-linear-gradient"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("repeating-radial-gradient"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("-moz-linear-gradient"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("-moz-radial-gradient"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("-moz-repeating-linear-gradient"));
     InsertNoDuplicates(aArray, NS_LITERAL_STRING("-moz-repeating-radial-gradient"));
   }
 }
 NS_IMETHODIMP
 inDOMUtils::GetCSSValuesForProperty(const nsAString& aProperty,
                                     uint32_t* aLength,
                                     char16_t*** aValues)
 {
   nsCSSProperty propertyID = nsCSSProps::LookupProperty(aProperty,
                                                         nsCSSProps::eEnabledForAllContent);
   if (propertyID == eCSSProperty_UNKNOWN) {
     return NS_ERROR_FAILURE;
   }
   nsTArray<nsString> array;
   // We start collecting the values, BUT colors need to go in first, because array
   // needs to stay sorted, and the colors are sorted, so we just append them.
   if (propertyID == eCSSPropertyExtra_variable) {
     // No other values we can report.
   } else if (!nsCSSProps::IsShorthand(propertyID)) {
     // Property is longhand.
     uint32_t propertyParserVariant = nsCSSProps::ParserVariant(propertyID);
     // Get colors first.
     GetColorsForProperty(propertyParserVariant, array);
     if (propertyParserVariant & VARIANT_KEYWORD) {
       GetKeywordsForProperty(propertyID, array);
     }
     GetOtherValuesForProperty(propertyParserVariant, array);
   } else {
     // Property is shorthand.
     CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(subproperty, propertyID) {
       // Get colors (once) first.
       uint32_t propertyParserVariant = nsCSSProps::ParserVariant(*subproperty);
       if (propertyParserVariant & VARIANT_COLOR) {
         GetColorsForProperty(propertyParserVariant, array);
         break;
       }
     }
     CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(subproperty, propertyID) {
       uint32_t propertyParserVariant = nsCSSProps::ParserVariant(*subproperty);
       if (propertyParserVariant & VARIANT_KEYWORD) {
         GetKeywordsForProperty(*subproperty, array);
       }
       GetOtherValuesForProperty(propertyParserVariant, array);
     }
   }
   // All CSS properties take initial, inherit and unset.
   InsertNoDuplicates(array, NS_LITERAL_STRING("initial"));
   InsertNoDuplicates(array, NS_LITERAL_STRING("inherit"));
   InsertNoDuplicates(array, NS_LITERAL_STRING("unset"));
   *aLength = array.Length();
   char16_t** ret =
     static_cast<char16_t**>(NS_Alloc(*aLength * sizeof(char16_t*)));
   for (uint32_t i = 0; i < *aLength; ++i) {
     ret[i] = ToNewUnicode(array[i]);
   }
   *aValues = ret;
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::ColorNameToRGB(const nsAString& aColorName, JSContext* aCx,
                            JS::MutableHandle<JS::Value> aValue)
 {
   nscolor color;
   if (!NS_ColorNameToRGB(aColorName, &color)) {
     return NS_ERROR_INVALID_ARG;
   }
   InspectorRGBTriple triple;
   triple.mR = NS_GET_R(color);
   triple.mG = NS_GET_G(color);
   triple.mB = NS_GET_B(color);
   if (!triple.ToObject(aCx, aValue)) {
     return NS_ERROR_FAILURE;
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::RgbToColorName(uint8_t aR, uint8_t aG, uint8_t aB,
                            nsAString& aColorName)
 {
   const char* color = NS_RGBToColorName(NS_RGB(aR, aG, aB));
   if (!color) {
     aColorName.Truncate();
     return NS_ERROR_INVALID_ARG;
   }
   aColorName.AssignASCII(color);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetBindingURLs(nsIDOMElement *aElement, nsIArray **_retval)
 {
   NS_ENSURE_ARG_POINTER(aElement);
   *_retval = nullptr;
   nsCOMPtr<nsIMutableArray> urls = do_CreateInstance(NS_ARRAY_CONTRACTID);
   if (!urls)
     return NS_ERROR_FAILURE;
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   NS_ENSURE_ARG_POINTER(content);
   nsXBLBinding *binding = content->GetXBLBinding();
   while (binding) {
     urls->AppendElement(binding->PrototypeBinding()->BindingURI(), false);
     binding = binding->GetBaseBinding();
   }
   NS_ADDREF(*_retval = urls);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::SetContentState(nsIDOMElement* aElement,
                             EventStates::InternalType aState)
 {
   NS_ENSURE_ARG_POINTER(aElement);
   nsRefPtr<EventStateManager> esm =
     inLayoutUtils::GetEventStateManagerFor(aElement);
   if (esm) {
     nsCOMPtr<nsIContent> content;
     content = do_QueryInterface(aElement);
     // XXX Invalid cast of bool to nsresult (bug 778108)
     return (nsresult)esm->SetContentState(content, EventStates(aState));
   }
   return NS_ERROR_FAILURE;
 }
 NS_IMETHODIMP
 inDOMUtils::GetContentState(nsIDOMElement* aElement,
                             EventStates::InternalType* aState)
 {
   *aState = 0;
   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
   NS_ENSURE_ARG_POINTER(content);
   // NOTE: if this method is removed,
   // please remove GetInternalValue from EventStates
   *aState = content->AsElement()->State().GetInternalValue();
   return NS_OK;
 }
 /* static */ nsresult
 inDOMUtils::GetRuleNodeForElement(dom::Element* aElement,
                                   nsIAtom* aPseudo,
                                   nsStyleContext** aStyleContext,
                                   nsRuleNode** aRuleNode)
 {
   MOZ_ASSERT(aElement);
   *aRuleNode = nullptr;
   *aStyleContext = nullptr;
   nsIDocument* doc = aElement->GetDocument();
   NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
   nsIPresShell *presShell = doc->GetShell();
   NS_ENSURE_TRUE(presShell, NS_ERROR_UNEXPECTED);
   nsPresContext *presContext = presShell->GetPresContext();
   NS_ENSURE_TRUE(presContext, NS_ERROR_UNEXPECTED);
   presContext->EnsureSafeToHandOutCSSRules();
   nsRefPtr<nsStyleContext> sContext =
     nsComputedDOMStyle::GetStyleContextForElement(aElement, aPseudo, presShell);
   if (sContext) {
     *aRuleNode = sContext->RuleNode();
     sContext.forget(aStyleContext);
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::GetUsedFontFaces(nsIDOMRange* aRange,
                              nsIDOMFontFaceList** aFontFaceList)
 {
   return static_cast<nsRange*>(aRange)->GetUsedFontFaces(aFontFaceList);
 }
 static EventStates
 GetStatesForPseudoClass(const nsAString& aStatePseudo)
 {
   // An array of the states that are relevant for various pseudoclasses.
   // XXXbz this duplicates code in nsCSSRuleProcessor
   static const EventStates sPseudoClassStates[] = {
 #define CSS_PSEUDO_CLASS(_name, _value, _pref)	\
     EventStates(),
 #define CSS_STATE_PSEUDO_CLASS(_name, _value, _pref, _states)	\
     _states,
 #include "nsCSSPseudoClassList.h"
 #undef CSS_STATE_PSEUDO_CLASS
 #undef CSS_PSEUDO_CLASS
     // Add more entries for our fake values to make sure we can't
     // index out of bounds into this array no matter what.
     EventStates(),
     EventStates()
   };
   static_assert(MOZ_ARRAY_LENGTH(sPseudoClassStates) ==
                 nsCSSPseudoClasses::ePseudoClass_NotPseudoClass + 1,
                 "Length of PseudoClassStates array is incorrect");
   nsCOMPtr<nsIAtom> atom = do_GetAtom(aStatePseudo);
   // Ignore :moz-any-link so we don't give the element simultaneous
   // visited and unvisited style state
   if (nsCSSPseudoClasses::GetPseudoType(atom) ==
       nsCSSPseudoClasses::ePseudoClass_mozAnyLink) {
     return EventStates();
   }
   // Our array above is long enough that indexing into it with
   // NotPseudoClass is ok.
   return sPseudoClassStates[nsCSSPseudoClasses::GetPseudoType(atom)];
 }
 NS_IMETHODIMP
 inDOMUtils::AddPseudoClassLock(nsIDOMElement *aElement,
                                const nsAString &aPseudoClass)
 {
   EventStates state = GetStatesForPseudoClass(aPseudoClass);
   if (state.IsEmpty()) {
     return NS_OK;
   }
   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
   NS_ENSURE_ARG_POINTER(element);
   element->LockStyleStates(state);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::RemovePseudoClassLock(nsIDOMElement *aElement,
                                   const nsAString &aPseudoClass)
 {
   EventStates state = GetStatesForPseudoClass(aPseudoClass);
   if (state.IsEmpty()) {
     return NS_OK;
   }
   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
   NS_ENSURE_ARG_POINTER(element);
   element->UnlockStyleStates(state);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::HasPseudoClassLock(nsIDOMElement *aElement,
                                const nsAString &aPseudoClass,
                                bool *_retval)
 {
   EventStates state = GetStatesForPseudoClass(aPseudoClass);
   if (state.IsEmpty()) {
     *_retval = false;
     return NS_OK;
   }
   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
   NS_ENSURE_ARG_POINTER(element);
   EventStates locks = element->LockedStyleStates();
   *_retval = locks.HasAllStates(state);
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::ClearPseudoClassLocks(nsIDOMElement *aElement)
 {
   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
   NS_ENSURE_ARG_POINTER(element);
   element->ClearStyleStateLocks();
   return NS_OK;
 }
 NS_IMETHODIMP
 inDOMUtils::ParseStyleSheet(nsIDOMCSSStyleSheet *aSheet,
                             const nsAString& aInput)
 {
   nsRefPtr<nsCSSStyleSheet> sheet = do_QueryObject(aSheet);
   NS_ENSURE_ARG_POINTER(sheet);
   return sheet->ParseSheet(aInput);
 }

The Tor Browser / annotate

layout/inspector/inDOMUtils.cpp@b8a032363ba2 (annotated)

layout/inspector/inDOMUtils.cpp