LCOV - app.info - layout/inspector/src/inDOMUtils.cpp

LCOV - code coverage report
| Current view: | directory - layout/inspector/src - inDOMUtils.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 188 | 0 | 0.0 %
| Date: | 2012-04-21 | Functions: | 22 | 0 | 0.0 %

           1                 : /* ***** BEGIN LICENSE BLOCK *****
           2                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           3                 :  *
           4                 :  * The contents of this file are subject to the Mozilla Public License Version
           5                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           6                 :  * the License. You may obtain a copy of the License at
           7                 :  * http://www.mozilla.org/MPL/
           8                 :  *
           9                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          10                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          11                 :  * for the specific language governing rights and limitations under the
          12                 :  * License.
          13                 :  *
          14                 :  * The Original Code is mozilla.org code.
          15                 :  *
          16                 :  * The Initial Developer of the Original Code is
          17                 :  * Netscape Communications Corporation.
          18                 :  * Portions created by the Initial Developer are Copyright (C) 2001
          19                 :  * the Initial Developer. All Rights Reserved.
          20                 :  *
          21                 :  * Contributor(s):
          22                 :  *   Joe Hewitt <hewitt@netscape.com> (original author)
          23                 :  *   Christopher A. Aillon <christopher@aillon.com>
          24                 :  *
          25                 :  * Alternatively, the contents of this file may be used under the terms of
          26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          27                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          29                 :  * of those above. If you wish to allow use of your version of this file only
          30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          31                 :  * use your version of this file under the terms of the MPL, indicate your
          32                 :  * decision by deleting the provisions above and replace them with the notice
          33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          34                 :  * the provisions above, a recipient may use your version of this file under
          35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          36                 :  *
          37                 :  * ***** END LICENSE BLOCK ***** */
          38                 :
          39                 : #include "inDOMUtils.h"
          40                 : #include "inLayoutUtils.h"
          41                 :
          42                 : #include "nsIServiceManager.h"
          43                 : #include "nsString.h"
          44                 : #include "nsIDOMElement.h"
          45                 : #include "nsIDocument.h"
          46                 : #include "nsIPresShell.h"
          47                 : #include "nsIDOMDocument.h"
          48                 : #include "nsIDOMCharacterData.h"
          49                 : #include "nsRuleNode.h"
          50                 : #include "nsIStyleRule.h"
          51                 : #include "mozilla/css/StyleRule.h"
          52                 : #include "nsICSSStyleRuleDOMWrapper.h"
          53                 : #include "nsIDOMWindow.h"
          54                 : #include "nsXBLBinding.h"
          55                 : #include "nsXBLPrototypeBinding.h"
          56                 : #include "nsIMutableArray.h"
          57                 : #include "nsBindingManager.h"
          58                 : #include "nsComputedDOMStyle.h"
          59                 : #include "nsEventStateManager.h"
          60                 : #include "nsIAtom.h"
          61                 : #include "nsRange.h"
          62                 : #include "mozilla/dom/Element.h"
          63                 :
          64                 :
          65                 : ///////////////////////////////////////////////////////////////////////////////
          66                 :
          67               0 : inDOMUtils::inDOMUtils()
          68                 : {
          69               0 : }
          70                 :
          71               0 : inDOMUtils::~inDOMUtils()
          72                 : {
          73               0 : }
          74                 :
          75               0 : NS_IMPL_ISUPPORTS1(inDOMUtils, inIDOMUtils)
          76                 :
          77                 : ///////////////////////////////////////////////////////////////////////////////
          78                 : // inIDOMUtils
          79                 :
          80                 : NS_IMETHODIMP
          81               0 : inDOMUtils::IsIgnorableWhitespace(nsIDOMCharacterData *aDataNode,
          82                 :                                   bool *aReturn)
          83                 : {
          84               0 :   NS_PRECONDITION(aReturn, "Must have an out parameter");
          85                 :
          86               0 :   NS_ENSURE_ARG_POINTER(aDataNode);
          87                 :
          88               0 :   *aReturn = false;
          89                 :
          90               0 :   nsCOMPtr<nsIContent> content = do_QueryInterface(aDataNode);
          91               0 :   NS_ASSERTION(content, "Does not implement nsIContent!");
          92                 :
          93               0 :   if (!content->TextIsOnlyWhitespace()) {
          94               0 :     return NS_OK;
          95                 :   }
          96                 :
          97                 :   // Okay.  We have only white space.  Let's check the white-space
          98                 :   // property now and make sure that this isn't preformatted text...
          99                 :
         100               0 :   nsCOMPtr<nsIDOMWindow> win = inLayoutUtils::GetWindowFor(aDataNode);
         101               0 :   if (!win) {
         102                 :     // Hmm.  Things are screwy if we have no window...
         103               0 :     NS_ERROR("No window!");
         104               0 :     return NS_OK;
         105                 :   }
         106                 :
         107               0 :   nsIFrame* frame = content->GetPrimaryFrame();
         108               0 :   if (frame) {
         109               0 :     const nsStyleText* text = frame->GetStyleText();
         110               0 :     *aReturn = !text->WhiteSpaceIsSignificant();
         111                 :   }
         112                 :   else {
         113                 :     // empty inter-tag text node without frame, e.g., in between <table>\n<tr>
         114               0 :     *aReturn = true;
         115                 :   }
         116                 :
         117               0 :   return NS_OK;
         118                 : }
         119                 :
         120                 : NS_IMETHODIMP
         121               0 : inDOMUtils::GetParentForNode(nsIDOMNode* aNode,
         122                 :                              bool aShowingAnonymousContent,
         123                 :                              nsIDOMNode** aParent)
         124                 : {
         125               0 :   NS_ENSURE_ARG_POINTER(aNode);
         126                 :
         127                 :   // First do the special cases -- document nodes and anonymous content
         128               0 :   nsCOMPtr<nsIDOMDocument> doc(do_QueryInterface(aNode));
         129               0 :   nsCOMPtr<nsIDOMNode> parent;
         130                 :
         131               0 :   if (doc) {
         132               0 :     parent = inLayoutUtils::GetContainerFor(doc);
         133               0 :   } else if (aShowingAnonymousContent) {
         134               0 :     nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
         135               0 :     if (content) {
         136               0 :       nsIContent* bparent = nsnull;
         137               0 :       nsRefPtr<nsBindingManager> bindingManager = inLayoutUtils::GetBindingManagerFor(aNode);
         138               0 :       if (bindingManager) {
         139               0 :         bparent = bindingManager->GetInsertionParent(content);
         140                 :       }
         141                 :
         142               0 :       parent = do_QueryInterface(bparent);
         143                 :     }
         144                 :   }
         145                 :
         146               0 :   if (!parent) {
         147                 :     // Ok, just get the normal DOM parent node
         148               0 :     aNode->GetParentNode(getter_AddRefs(parent));
         149                 :   }
         150                 :
         151               0 :   NS_IF_ADDREF(*aParent = parent);
         152               0 :   return NS_OK;
         153                 : }
         154                 :
         155                 : NS_IMETHODIMP
         156               0 : inDOMUtils::GetChildrenForNode(nsIDOMNode* aNode,
         157                 :                                bool aShowingAnonymousContent,
         158                 :                                nsIDOMNodeList** aChildren)
         159                 : {
         160               0 :   NS_ENSURE_ARG_POINTER(aNode);
         161               0 :   NS_PRECONDITION(aChildren, "Must have an out parameter");
         162                 :
         163               0 :   nsCOMPtr<nsIDOMNodeList> kids;
         164                 :
         165               0 :   if (aShowingAnonymousContent) {
         166               0 :     nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
         167               0 :     if (content) {
         168                 :       nsRefPtr<nsBindingManager> bindingManager =
         169               0 :         inLayoutUtils::GetBindingManagerFor(aNode);
         170               0 :       if (bindingManager) {
         171               0 :         bindingManager->GetAnonymousNodesFor(content, getter_AddRefs(kids));
         172               0 :         if (!kids) {
         173               0 :           bindingManager->GetContentListFor(content, getter_AddRefs(kids));
         174                 :         }
         175                 :       }
         176                 :     }
         177                 :   }
         178                 :
         179               0 :   if (!kids) {
         180               0 :     aNode->GetChildNodes(getter_AddRefs(kids));
         181                 :   }
         182                 :
         183               0 :   kids.forget(aChildren);
         184               0 :   return NS_OK;
         185                 : }
         186                 :
         187                 : NS_IMETHODIMP
         188               0 : inDOMUtils::GetCSSStyleRules(nsIDOMElement *aElement,
         189                 :                              const nsAString& aPseudo,
         190                 :                              nsISupportsArray **_retval)
         191                 : {
         192               0 :   NS_ENSURE_ARG_POINTER(aElement);
         193                 :
         194               0 :   *_retval = nsnull;
         195                 :
         196               0 :   nsCOMPtr<nsIAtom> pseudoElt;
         197               0 :   if (!aPseudo.IsEmpty()) {
         198               0 :     pseudoElt = do_GetAtom(aPseudo);
         199                 :   }
         200                 :
         201               0 :   nsRuleNode* ruleNode = nsnull;
         202               0 :   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
         203               0 :   nsRefPtr<nsStyleContext> styleContext;
         204               0 :   GetRuleNodeForContent(content, pseudoElt, getter_AddRefs(styleContext), &ruleNode);
         205               0 :   if (!ruleNode) {
         206                 :     // This can fail for content nodes that are not in the document or
         207                 :     // if the document they're in doesn't have a presshell.  Bail out.
         208               0 :     return NS_OK;
         209                 :   }
         210                 :
         211               0 :   nsCOMPtr<nsISupportsArray> rules;
         212               0 :   NS_NewISupportsArray(getter_AddRefs(rules));
         213               0 :   if (!rules) return NS_ERROR_OUT_OF_MEMORY;
         214                 :
         215               0 :   nsRefPtr<mozilla::css::StyleRule> cssRule;
         216               0 :   for ( ; !ruleNode->IsRoot(); ruleNode = ruleNode->GetParent()) {
         217               0 :     cssRule = do_QueryObject(ruleNode->GetRule());
         218               0 :     if (cssRule) {
         219               0 :       nsCOMPtr<nsIDOMCSSRule> domRule = cssRule->GetDOMRule();
         220               0 :       if (domRule)
         221               0 :         rules->InsertElementAt(domRule, 0);
         222                 :     }
         223                 :   }
         224                 :
         225               0 :   *_retval = rules;
         226               0 :   NS_ADDREF(*_retval);
         227                 :
         228               0 :   return NS_OK;
         229                 : }
         230                 :
         231                 : NS_IMETHODIMP
         232               0 : inDOMUtils::GetRuleLine(nsIDOMCSSStyleRule *aRule, PRUint32 *_retval)
         233                 : {
         234               0 :   *_retval = 0;
         235                 :
         236               0 :   NS_ENSURE_ARG_POINTER(aRule);
         237                 :
         238               0 :   nsCOMPtr<nsICSSStyleRuleDOMWrapper> rule = do_QueryInterface(aRule);
         239               0 :   nsRefPtr<mozilla::css::StyleRule> cssrule;
         240               0 :   nsresult rv = rule->GetCSSStyleRule(getter_AddRefs(cssrule));
         241               0 :   NS_ENSURE_SUCCESS(rv, rv);
         242               0 :   NS_ENSURE_TRUE(cssrule != nsnull, NS_ERROR_FAILURE);
         243               0 :   *_retval = cssrule->GetLineNumber();
         244               0 :   return NS_OK;
         245                 : }
         246                 :
         247                 : NS_IMETHODIMP
         248               0 : inDOMUtils::IsInheritedProperty(const nsAString &aPropertyName, bool *_retval)
         249                 : {
         250               0 :   nsCSSProperty prop = nsCSSProps::LookupProperty(aPropertyName);
         251               0 :   if (prop == eCSSProperty_UNKNOWN) {
         252               0 :     *_retval = false;
         253               0 :     return NS_OK;
         254                 :   }
         255                 :
         256               0 :   if (nsCSSProps::IsShorthand(prop)) {
         257               0 :     prop = nsCSSProps::SubpropertyEntryFor(prop)[0];
         258                 :   }
         259                 :
         260               0 :   nsStyleStructID sid = nsCSSProps::kSIDTable[prop];
         261               0 :   *_retval = !nsCachedStyleData::IsReset(sid);
         262               0 :   return NS_OK;
         263                 : }
         264                 :
         265                 : NS_IMETHODIMP
         266               0 : inDOMUtils::GetBindingURLs(nsIDOMElement *aElement, nsIArray **_retval)
         267                 : {
         268               0 :   NS_ENSURE_ARG_POINTER(aElement);
         269                 :
         270               0 :   *_retval = nsnull;
         271                 :
         272               0 :   nsCOMPtr<nsIMutableArray> urls = do_CreateInstance(NS_ARRAY_CONTRACTID);
         273               0 :   if (!urls)
         274               0 :     return NS_ERROR_FAILURE;
         275                 :
         276               0 :   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
         277               0 :   NS_ASSERTION(content, "elements must implement nsIContent");
         278                 :
         279               0 :   nsIDocument *ownerDoc = content->OwnerDoc();
         280               0 :   nsXBLBinding *binding = ownerDoc->BindingManager()->GetBinding(content);
         281                 :
         282               0 :   while (binding) {
         283               0 :     urls->AppendElement(binding->PrototypeBinding()->BindingURI(), false);
         284               0 :     binding = binding->GetBaseBinding();
         285                 :   }
         286                 :
         287               0 :   NS_ADDREF(*_retval = urls);
         288               0 :   return NS_OK;
         289                 : }
         290                 :
         291                 : NS_IMETHODIMP
         292               0 : inDOMUtils::SetContentState(nsIDOMElement *aElement, nsEventStates::InternalType aState)
         293                 : {
         294               0 :   NS_ENSURE_ARG_POINTER(aElement);
         295                 :
         296               0 :   nsRefPtr<nsEventStateManager> esm = inLayoutUtils::GetEventStateManagerFor(aElement);
         297               0 :   if (esm) {
         298               0 :     nsCOMPtr<nsIContent> content;
         299               0 :     content = do_QueryInterface(aElement);
         300                 :
         301               0 :     return esm->SetContentState(content, nsEventStates(aState));
         302                 :   }
         303                 :
         304               0 :   return NS_ERROR_FAILURE;
         305                 : }
         306                 :
         307                 : NS_IMETHODIMP
         308               0 : inDOMUtils::GetContentState(nsIDOMElement *aElement, nsEventStates::InternalType* aState)
         309                 : {
         310               0 :   *aState = 0;
         311               0 :   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
         312               0 :   NS_ENSURE_ARG_POINTER(content);
         313                 :
         314                 :   // NOTE: if this method is removed,
         315                 :   // please remove GetInternalValue from nsEventStates
         316               0 :   *aState = content->AsElement()->State().GetInternalValue();
         317               0 :   return NS_OK;
         318                 : }
         319                 :
         320                 : /* static */ nsresult
         321               0 : inDOMUtils::GetRuleNodeForContent(nsIContent* aContent,
         322                 :                                   nsIAtom* aPseudo,
         323                 :                                   nsStyleContext** aStyleContext,
         324                 :                                   nsRuleNode** aRuleNode)
         325                 : {
         326               0 :   *aRuleNode = nsnull;
         327               0 :   *aStyleContext = nsnull;
         328                 :
         329               0 :   if (!aContent->IsElement()) {
         330               0 :     return NS_ERROR_UNEXPECTED;
         331                 :   }
         332                 :
         333               0 :   nsIDocument* doc = aContent->GetDocument();
         334               0 :   NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
         335                 :
         336               0 :   nsIPresShell *presShell = doc->GetShell();
         337               0 :   NS_ENSURE_TRUE(presShell, NS_ERROR_UNEXPECTED);
         338                 :
         339               0 :   nsPresContext *presContext = presShell->GetPresContext();
         340               0 :   NS_ENSURE_TRUE(presContext, NS_ERROR_UNEXPECTED);
         341                 :
         342               0 :   bool safe = presContext->EnsureSafeToHandOutCSSRules();
         343               0 :   NS_ENSURE_TRUE(safe, NS_ERROR_OUT_OF_MEMORY);
         344                 :
         345                 :   nsRefPtr<nsStyleContext> sContext =
         346               0 :     nsComputedDOMStyle::GetStyleContextForElement(aContent->AsElement(), aPseudo, presShell);
         347               0 :   if (sContext) {
         348               0 :     *aRuleNode = sContext->GetRuleNode();
         349               0 :     sContext.forget(aStyleContext);
         350                 :   }
         351               0 :   return NS_OK;
         352                 : }
         353                 :
         354                 : NS_IMETHODIMP
         355               0 : inDOMUtils::GetUsedFontFaces(nsIDOMRange* aRange,
         356                 :                              nsIDOMFontFaceList** aFontFaceList)
         357                 : {
         358               0 :   return static_cast<nsRange*>(aRange)->GetUsedFontFaces(aFontFaceList);
         359                 : }
         360                 :
         361                 : static nsEventStates
         362               0 : GetStatesForPseudoClass(const nsAString& aStatePseudo)
         363                 : {
         364                 :   // An array of the states that are relevant for various pseudoclasses.
         365                 :   // XXXbz this duplicates code in nsCSSRuleProcessor
         366                 :   static const nsEventStates sPseudoClassStates[] = {
         367                 : #define CSS_PSEUDO_CLASS(_name, _value) \
         368                 :     nsEventStates(),
         369                 : #define CSS_STATE_PSEUDO_CLASS(_name, _value, _states) \
         370                 :     _states,
         371                 : #include "nsCSSPseudoClassList.h"
         372                 : #undef CSS_STATE_PSEUDO_CLASS
         373                 : #undef CSS_PSEUDO_CLASS
         374                 :
         375                 :     // Add more entries for our fake values to make sure we can't
         376                 :     // index out of bounds into this array no matter what.
         377                 :     nsEventStates(),
         378                 :     nsEventStates()
         379               0 :   };
         380                 :   PR_STATIC_ASSERT(NS_ARRAY_LENGTH(sPseudoClassStates) ==
         381                 :                    nsCSSPseudoClasses::ePseudoClass_NotPseudoClass + 1);
         382                 :
         383               0 :   nsCOMPtr<nsIAtom> atom = do_GetAtom(aStatePseudo);
         384                 :
         385                 :   // Ignore :moz-any-link so we don't give the element simultaneous
         386                 :   // visited and unvisited style state
         387               0 :   if (nsCSSPseudoClasses::GetPseudoType(atom) ==
         388                 :       nsCSSPseudoClasses::ePseudoClass_mozAnyLink) {
         389               0 :     return nsEventStates();
         390                 :   }
         391                 :   // Our array above is long enough that indexing into it with
         392                 :   // NotPseudoClass is ok.
         393               0 :   return sPseudoClassStates[nsCSSPseudoClasses::GetPseudoType(atom)];
         394                 : }
         395                 :
         396                 : NS_IMETHODIMP
         397               0 : inDOMUtils::AddPseudoClassLock(nsIDOMElement *aElement,
         398                 :                                const nsAString &aPseudoClass)
         399                 : {
         400               0 :   NS_ENSURE_ARG_POINTER(aElement);
         401                 :
         402               0 :   nsEventStates state = GetStatesForPseudoClass(aPseudoClass);
         403               0 :   if (state.IsEmpty()) {
         404               0 :     return NS_OK;
         405                 :   }
         406                 :
         407               0 :   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
         408               0 :   element->LockStyleStates(state);
         409                 :
         410               0 :   return NS_OK;
         411                 : }
         412                 :
         413                 : NS_IMETHODIMP
         414               0 : inDOMUtils::RemovePseudoClassLock(nsIDOMElement *aElement,
         415                 :                                   const nsAString &aPseudoClass)
         416                 : {
         417               0 :   NS_ENSURE_ARG_POINTER(aElement);
         418                 :
         419               0 :   nsEventStates state = GetStatesForPseudoClass(aPseudoClass);
         420               0 :   if (state.IsEmpty()) {
         421               0 :     return NS_OK;
         422                 :   }
         423                 :
         424               0 :   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
         425               0 :   element->UnlockStyleStates(state);
         426                 :
         427               0 :   return NS_OK;
         428                 : }
         429                 :
         430                 : NS_IMETHODIMP
         431               0 : inDOMUtils::HasPseudoClassLock(nsIDOMElement *aElement,
         432                 :                                const nsAString &aPseudoClass,
         433                 :                                bool *_retval)
         434                 : {
         435               0 :   NS_ENSURE_ARG_POINTER(aElement);
         436                 :
         437               0 :   nsEventStates state = GetStatesForPseudoClass(aPseudoClass);
         438               0 :   if (state.IsEmpty()) {
         439               0 :     *_retval = false;
         440               0 :     return NS_OK;
         441                 :   }
         442                 :
         443               0 :   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
         444               0 :   nsEventStates locks = element->LockedStyleStates();
         445                 :
         446               0 :   *_retval = locks.HasAllStates(state);
         447               0 :   return NS_OK;
         448                 : }
         449                 :
         450                 : NS_IMETHODIMP
         451               0 : inDOMUtils::ClearPseudoClassLocks(nsIDOMElement *aElement)
         452                 : {
         453               0 :   NS_ENSURE_ARG_POINTER(aElement);
         454                 :
         455               0 :   nsCOMPtr<mozilla::dom::Element> element = do_QueryInterface(aElement);
         456               0 :   element->ClearStyleStateLocks();
         457                 :
         458               0 :   return NS_OK;
         459                 : }

Generated by: LCOV version 1.7