LCOV - code coverage report
Current view: directory - content/html/content/src - nsHTMLStyleElement.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 107 0 0.0 %
Date: 2012-06-02 Functions: 123 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Daniel Glazman <glazman@netscape.com>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or 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                 : #include "nsIDOMHTMLStyleElement.h"
      39                 : #include "nsIDOMLinkStyle.h"
      40                 : #include "nsIDOMEventTarget.h"
      41                 : #include "nsGenericHTMLElement.h"
      42                 : #include "nsGkAtoms.h"
      43                 : #include "nsStyleConsts.h"
      44                 : #include "nsIDOMStyleSheet.h"
      45                 : #include "nsIStyleSheet.h"
      46                 : #include "nsStyleLinkElement.h"
      47                 : #include "nsNetUtil.h"
      48                 : #include "nsIDocument.h"
      49                 : #include "nsUnicharUtils.h"
      50                 : #include "nsThreadUtils.h"
      51                 : #include "nsContentUtils.h"
      52                 : 
      53                 : class nsHTMLStyleElement : public nsGenericHTMLElement,
      54                 :                            public nsIDOMHTMLStyleElement,
      55                 :                            public nsStyleLinkElement,
      56                 :                            public nsStubMutationObserver
      57                 : {
      58                 : public:
      59                 :   nsHTMLStyleElement(already_AddRefed<nsINodeInfo> aNodeInfo);
      60                 :   virtual ~nsHTMLStyleElement();
      61                 : 
      62                 :   // nsISupports
      63                 :   NS_DECL_ISUPPORTS_INHERITED
      64                 : 
      65                 :   // nsIDOMNode
      66               0 :   NS_FORWARD_NSIDOMNODE(nsGenericHTMLElement::)
      67                 : 
      68                 :   // nsIDOMElement
      69               0 :   NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)
      70                 : 
      71                 :   // nsIDOMHTMLElement
      72               0 :   NS_FORWARD_NSIDOMHTMLELEMENT_BASIC(nsGenericHTMLElement::)
      73               0 :   NS_SCRIPTABLE NS_IMETHOD Click() {
      74               0 :     return nsGenericHTMLElement::Click();
      75                 :   }
      76               0 :   NS_SCRIPTABLE NS_IMETHOD GetTabIndex(PRInt32* aTabIndex) {
      77               0 :     return nsGenericHTMLElement::GetTabIndex(aTabIndex);
      78                 :   }
      79               0 :   NS_SCRIPTABLE NS_IMETHOD SetTabIndex(PRInt32 aTabIndex) {
      80               0 :     return nsGenericHTMLElement::SetTabIndex(aTabIndex);
      81                 :   }
      82               0 :   NS_SCRIPTABLE NS_IMETHOD Focus() {
      83               0 :     return nsGenericHTMLElement::Focus();
      84                 :   }
      85               0 :   NS_SCRIPTABLE NS_IMETHOD GetDraggable(bool* aDraggable) {
      86               0 :     return nsGenericHTMLElement::GetDraggable(aDraggable);
      87                 :   }
      88                 :   NS_SCRIPTABLE NS_IMETHOD GetInnerHTML(nsAString& aInnerHTML);
      89                 :   NS_SCRIPTABLE NS_IMETHOD SetInnerHTML(const nsAString& aInnerHTML);
      90                 : 
      91                 :   // nsIDOMHTMLStyleElement
      92                 :   NS_DECL_NSIDOMHTMLSTYLEELEMENT
      93                 : 
      94                 :   virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
      95                 :                               nsIContent* aBindingParent,
      96                 :                               bool aCompileEventHandlers);
      97                 :   virtual void UnbindFromTree(bool aDeep = true,
      98                 :                               bool aNullParent = true);
      99                 :   nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
     100                 :                    const nsAString& aValue, bool aNotify)
     101                 :   {
     102                 :     return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify);
     103                 :   }
     104                 :   virtual nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
     105                 :                            nsIAtom* aPrefix, const nsAString& aValue,
     106                 :                            bool aNotify);
     107                 :   virtual nsresult UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
     108                 :                              bool aNotify);
     109                 : 
     110                 :   virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
     111                 : 
     112                 :   // nsIMutationObserver
     113                 :   NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
     114                 :   NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
     115                 :   NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
     116                 :   NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
     117                 : 
     118                 :   virtual nsXPCClassInfo* GetClassInfo();
     119                 : protected:
     120                 :   already_AddRefed<nsIURI> GetStyleSheetURL(bool* aIsInline);
     121                 :   void GetStyleSheetInfo(nsAString& aTitle,
     122                 :                          nsAString& aType,
     123                 :                          nsAString& aMedia,
     124                 :                          bool* aIsAlternate);
     125                 :   /**
     126                 :    * Common method to call from the various mutation observer methods.
     127                 :    * aContent is a content node that's either the one that changed or its
     128                 :    * parent; we should only respond to the change if aContent is non-anonymous.
     129                 :    */
     130                 :   void ContentChanged(nsIContent* aContent);
     131                 : };
     132                 : 
     133                 : 
     134               0 : NS_IMPL_NS_NEW_HTML_ELEMENT(Style)
     135                 : 
     136                 : 
     137               0 : nsHTMLStyleElement::nsHTMLStyleElement(already_AddRefed<nsINodeInfo> aNodeInfo)
     138               0 :   : nsGenericHTMLElement(aNodeInfo)
     139                 : {
     140               0 :   AddMutationObserver(this);
     141               0 : }
     142                 : 
     143               0 : nsHTMLStyleElement::~nsHTMLStyleElement()
     144                 : {
     145               0 : }
     146                 : 
     147                 : 
     148               0 : NS_IMPL_ADDREF_INHERITED(nsHTMLStyleElement, nsGenericElement) 
     149               0 : NS_IMPL_RELEASE_INHERITED(nsHTMLStyleElement, nsGenericElement) 
     150                 : 
     151                 : 
     152               0 : DOMCI_NODE_DATA(HTMLStyleElement, nsHTMLStyleElement)
     153                 : 
     154                 : // QueryInterface implementation for nsHTMLStyleElement
     155               0 : NS_INTERFACE_TABLE_HEAD(nsHTMLStyleElement)
     156               0 :   NS_HTML_CONTENT_INTERFACE_TABLE4(nsHTMLStyleElement,
     157                 :                                    nsIDOMHTMLStyleElement,
     158                 :                                    nsIDOMLinkStyle,
     159                 :                                    nsIStyleSheetLinkingElement,
     160                 :                                    nsIMutationObserver)
     161               0 :   NS_HTML_CONTENT_INTERFACE_TABLE_TO_MAP_SEGUE(nsHTMLStyleElement,
     162                 :                                                nsGenericHTMLElement)
     163               0 : NS_HTML_CONTENT_INTERFACE_TABLE_TAIL_CLASSINFO(HTMLStyleElement)
     164                 : 
     165                 : 
     166               0 : NS_IMPL_ELEMENT_CLONE(nsHTMLStyleElement)
     167                 : 
     168                 : 
     169                 : NS_IMETHODIMP
     170               0 : nsHTMLStyleElement::GetDisabled(bool* aDisabled)
     171                 : {
     172               0 :   nsCOMPtr<nsIDOMStyleSheet> ss = do_QueryInterface(GetStyleSheet());
     173               0 :   if (!ss) {
     174               0 :     *aDisabled = false;
     175               0 :     return NS_OK;
     176                 :   }
     177                 : 
     178               0 :   return ss->GetDisabled(aDisabled);
     179                 : }
     180                 : 
     181                 : NS_IMETHODIMP 
     182               0 : nsHTMLStyleElement::SetDisabled(bool aDisabled)
     183                 : {
     184               0 :   nsCOMPtr<nsIDOMStyleSheet> ss = do_QueryInterface(GetStyleSheet());
     185               0 :   if (!ss) {
     186               0 :     return NS_OK;
     187                 :   }
     188                 : 
     189               0 :   return ss->SetDisabled(aDisabled);
     190                 : }
     191                 : 
     192               0 : NS_IMPL_STRING_ATTR(nsHTMLStyleElement, Media, media)
     193               0 : NS_IMPL_STRING_ATTR(nsHTMLStyleElement, Type, type)
     194                 : 
     195                 : void
     196               0 : nsHTMLStyleElement::CharacterDataChanged(nsIDocument* aDocument,
     197                 :                                          nsIContent* aContent,
     198                 :                                          CharacterDataChangeInfo* aInfo)
     199                 : {
     200               0 :   ContentChanged(aContent);
     201               0 : }
     202                 : 
     203                 : void
     204               0 : nsHTMLStyleElement::ContentAppended(nsIDocument* aDocument,
     205                 :                                     nsIContent* aContainer,
     206                 :                                     nsIContent* aFirstNewContent,
     207                 :                                     PRInt32 aNewIndexInContainer)
     208                 : {
     209               0 :   ContentChanged(aContainer);
     210               0 : }
     211                 : 
     212                 : void
     213               0 : nsHTMLStyleElement::ContentInserted(nsIDocument* aDocument,
     214                 :                                     nsIContent* aContainer,
     215                 :                                     nsIContent* aChild,
     216                 :                                     PRInt32 aIndexInContainer)
     217                 : {
     218               0 :   ContentChanged(aChild);
     219               0 : }
     220                 : 
     221                 : void
     222               0 : nsHTMLStyleElement::ContentRemoved(nsIDocument* aDocument,
     223                 :                                    nsIContent* aContainer,
     224                 :                                    nsIContent* aChild,
     225                 :                                    PRInt32 aIndexInContainer,
     226                 :                                    nsIContent* aPreviousSibling)
     227                 : {
     228               0 :   ContentChanged(aChild);
     229               0 : }
     230                 : 
     231                 : void
     232               0 : nsHTMLStyleElement::ContentChanged(nsIContent* aContent)
     233                 : {
     234               0 :   if (nsContentUtils::IsInSameAnonymousTree(this, aContent)) {
     235               0 :     UpdateStyleSheetInternal(nsnull);
     236                 :   }
     237               0 : }
     238                 : 
     239                 : nsresult
     240               0 : nsHTMLStyleElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
     241                 :                                nsIContent* aBindingParent,
     242                 :                                bool aCompileEventHandlers)
     243                 : {
     244                 :   nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
     245                 :                                                  aBindingParent,
     246               0 :                                                  aCompileEventHandlers);
     247               0 :   NS_ENSURE_SUCCESS(rv, rv);
     248                 : 
     249               0 :   void (nsHTMLStyleElement::*update)() = &nsHTMLStyleElement::UpdateStyleSheetInternal;
     250               0 :   nsContentUtils::AddScriptRunner(NS_NewRunnableMethod(this, update));
     251                 : 
     252               0 :   return rv;  
     253                 : }
     254                 : 
     255                 : void
     256               0 : nsHTMLStyleElement::UnbindFromTree(bool aDeep, bool aNullParent)
     257                 : {
     258               0 :   nsCOMPtr<nsIDocument> oldDoc = GetCurrentDoc();
     259                 : 
     260               0 :   nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
     261               0 :   UpdateStyleSheetInternal(oldDoc);
     262               0 : }
     263                 : 
     264                 : nsresult
     265               0 : nsHTMLStyleElement::SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
     266                 :                             nsIAtom* aPrefix, const nsAString& aValue,
     267                 :                             bool aNotify)
     268                 : {
     269                 :   nsresult rv = nsGenericHTMLElement::SetAttr(aNameSpaceID, aName, aPrefix,
     270               0 :                                               aValue, aNotify);
     271               0 :   if (NS_SUCCEEDED(rv)) {
     272                 :     UpdateStyleSheetInternal(nsnull,
     273                 :                              aNameSpaceID == kNameSpaceID_None &&
     274                 :                              (aName == nsGkAtoms::title ||
     275                 :                               aName == nsGkAtoms::media ||
     276               0 :                               aName == nsGkAtoms::type));
     277                 :   }
     278                 : 
     279               0 :   return rv;
     280                 : }
     281                 : 
     282                 : nsresult
     283               0 : nsHTMLStyleElement::UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
     284                 :                               bool aNotify)
     285                 : {
     286                 :   nsresult rv = nsGenericHTMLElement::UnsetAttr(aNameSpaceID, aAttribute,
     287               0 :                                                 aNotify);
     288               0 :   if (NS_SUCCEEDED(rv)) {
     289                 :     UpdateStyleSheetInternal(nsnull,
     290                 :                              aNameSpaceID == kNameSpaceID_None &&
     291                 :                              (aAttribute == nsGkAtoms::title ||
     292                 :                               aAttribute == nsGkAtoms::media ||
     293               0 :                               aAttribute == nsGkAtoms::type));
     294                 :   }
     295                 : 
     296               0 :   return rv;
     297                 : }
     298                 : 
     299                 : nsresult
     300               0 : nsHTMLStyleElement::GetInnerHTML(nsAString& aInnerHTML)
     301                 : {
     302               0 :   nsContentUtils::GetNodeTextContent(this, false, aInnerHTML);
     303               0 :   return NS_OK;
     304                 : }
     305                 : 
     306                 : nsresult
     307               0 : nsHTMLStyleElement::SetInnerHTML(const nsAString& aInnerHTML)
     308                 : {
     309               0 :   SetEnableUpdates(false);
     310                 : 
     311               0 :   nsresult rv = nsContentUtils::SetNodeTextContent(this, aInnerHTML, true);
     312                 :   
     313               0 :   SetEnableUpdates(true);
     314                 :   
     315               0 :   UpdateStyleSheetInternal(nsnull);
     316               0 :   return rv;
     317                 : }
     318                 : 
     319                 : already_AddRefed<nsIURI>
     320               0 : nsHTMLStyleElement::GetStyleSheetURL(bool* aIsInline)
     321                 : {
     322               0 :   *aIsInline = true;
     323               0 :   return nsnull;
     324                 : }
     325                 : 
     326                 : void
     327               0 : nsHTMLStyleElement::GetStyleSheetInfo(nsAString& aTitle,
     328                 :                                       nsAString& aType,
     329                 :                                       nsAString& aMedia,
     330                 :                                       bool* aIsAlternate)
     331                 : {
     332               0 :   aTitle.Truncate();
     333               0 :   aType.Truncate();
     334               0 :   aMedia.Truncate();
     335               0 :   *aIsAlternate = false;
     336                 : 
     337               0 :   nsAutoString title;
     338               0 :   GetAttr(kNameSpaceID_None, nsGkAtoms::title, title);
     339               0 :   title.CompressWhitespace();
     340               0 :   aTitle.Assign(title);
     341                 : 
     342               0 :   GetAttr(kNameSpaceID_None, nsGkAtoms::media, aMedia);
     343                 :   // The HTML5 spec is formulated in terms of the CSSOM spec, which specifies
     344                 :   // that media queries should be ASCII lowercased during serialization.
     345               0 :   nsContentUtils::ASCIIToLower(aMedia);
     346                 : 
     347               0 :   GetAttr(kNameSpaceID_None, nsGkAtoms::type, aType);
     348                 : 
     349               0 :   nsAutoString mimeType;
     350               0 :   nsAutoString notUsed;
     351               0 :   nsContentUtils::SplitMimeType(aType, mimeType, notUsed);
     352               0 :   if (!mimeType.IsEmpty() && !mimeType.LowerCaseEqualsLiteral("text/css")) {
     353                 :     return;
     354                 :   }
     355                 : 
     356                 :   // If we get here we assume that we're loading a css file, so set the
     357                 :   // type to 'text/css'
     358               0 :   aType.AssignLiteral("text/css");
     359                 : }

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