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: 2012-06-02 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                 : }

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