LCOV - code coverage report
Current view: directory - content/svg/content/src - nsSVGAElement.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 91 0 0.0 %
Date: 2012-06-02 Functions: 23 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 SVG Project code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Jonathan Watt.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2006
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Jonathan Watt <jwatt@jwatt.org> (original author)
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : #include "mozilla/Util.h"
      39                 : 
      40                 : #include "nsSVGAElement.h"
      41                 : #include "nsSVGGraphicElement.h"
      42                 : #include "nsIDOMSVGAElement.h"
      43                 : #include "nsIDOMSVGURIReference.h"
      44                 : #include "nsILink.h"
      45                 : #include "nsSVGString.h"
      46                 : #include "nsCOMPtr.h"
      47                 : #include "nsGkAtoms.h"
      48                 : #include "nsContentUtils.h"
      49                 : 
      50                 : using namespace mozilla;
      51                 : 
      52                 : nsSVGElement::StringInfo nsSVGAElement::sStringInfo[2] =
      53                 : {
      54                 :   { &nsGkAtoms::href, kNameSpaceID_XLink, true },
      55                 :   { &nsGkAtoms::target, kNameSpaceID_None, true }
      56                 : };
      57                 : 
      58               0 : NS_IMPL_NS_NEW_SVG_ELEMENT(A)
      59                 : 
      60                 : 
      61                 : //----------------------------------------------------------------------
      62                 : // nsISupports methods
      63                 : 
      64               0 : NS_IMPL_ADDREF_INHERITED(nsSVGAElement, nsSVGAElementBase)
      65               0 : NS_IMPL_RELEASE_INHERITED(nsSVGAElement, nsSVGAElementBase)
      66                 : 
      67               0 : DOMCI_NODE_DATA(SVGAElement, nsSVGAElement)
      68                 : 
      69               0 : NS_INTERFACE_TABLE_HEAD(nsSVGAElement)
      70               0 :   NS_NODE_INTERFACE_TABLE8(nsSVGAElement,
      71                 :                            nsIDOMNode,
      72                 :                            nsIDOMElement,
      73                 :                            nsIDOMSVGElement,
      74                 :                            nsIDOMSVGAElement,
      75                 :                            nsIDOMSVGTests,
      76                 :                            nsIDOMSVGURIReference,
      77                 :                            nsILink,
      78                 :                            Link)
      79               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGAElement)
      80               0 : NS_INTERFACE_MAP_END_INHERITING(nsSVGAElementBase)
      81                 : 
      82                 : 
      83                 : //----------------------------------------------------------------------
      84                 : // Implementation
      85                 : 
      86               0 : nsSVGAElement::nsSVGAElement(already_AddRefed<nsINodeInfo> aNodeInfo)
      87                 :   : nsSVGAElementBase(aNodeInfo),
      88               0 :     Link(this)
      89                 : {
      90               0 : }
      91                 : 
      92                 : //----------------------------------------------------------------------
      93                 : // nsIDOMSVGURIReference methods
      94                 : 
      95                 : /* readonly attribute nsIDOMSVGAnimatedString href; */
      96                 : NS_IMETHODIMP
      97               0 : nsSVGAElement::GetHref(nsIDOMSVGAnimatedString * *aHref)
      98                 : {
      99               0 :   return mStringAttributes[HREF].ToDOMAnimatedString(aHref, this);
     100                 : }
     101                 : 
     102                 : 
     103                 : //----------------------------------------------------------------------
     104                 : // nsINode methods
     105                 : 
     106                 : nsresult
     107               0 : nsSVGAElement::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
     108                 : {
     109               0 :   nsresult rv = nsGenericElement::PreHandleEvent(aVisitor);
     110               0 :   NS_ENSURE_SUCCESS(rv, rv);
     111                 : 
     112               0 :   return PreHandleEventForLinks(aVisitor);
     113                 : }
     114                 : 
     115                 : nsresult
     116               0 : nsSVGAElement::PostHandleEvent(nsEventChainPostVisitor& aVisitor)
     117                 : {
     118               0 :   return PostHandleEventForLinks(aVisitor);
     119                 : }
     120                 : 
     121               0 : NS_IMPL_ELEMENT_CLONE_WITH_INIT(nsSVGAElement)
     122                 : 
     123                 : 
     124                 : //----------------------------------------------------------------------
     125                 : // nsIDOMSVGAElement methods
     126                 : 
     127                 : /* readonly attribute nsIDOMSVGAnimatedString target; */
     128                 : NS_IMETHODIMP
     129               0 : nsSVGAElement::GetTarget(nsIDOMSVGAnimatedString * *aTarget)
     130                 : {
     131               0 :   return mStringAttributes[TARGET].ToDOMAnimatedString(aTarget, this);
     132                 : }
     133                 : 
     134                 : 
     135                 : //----------------------------------------------------------------------
     136                 : // nsIContent methods
     137                 : 
     138                 : nsresult
     139               0 : nsSVGAElement::BindToTree(nsIDocument *aDocument, nsIContent *aParent,
     140                 :                           nsIContent *aBindingParent,
     141                 :                           bool aCompileEventHandlers)
     142                 : {
     143               0 :   Link::ResetLinkState(false);
     144                 : 
     145                 :   nsresult rv = nsSVGAElementBase::BindToTree(aDocument, aParent,
     146                 :                                               aBindingParent,
     147               0 :                                               aCompileEventHandlers);
     148               0 :   NS_ENSURE_SUCCESS(rv, rv);
     149                 :   
     150               0 :   if (aDocument) {
     151               0 :     aDocument->RegisterPendingLinkUpdate(this);
     152                 :   }
     153                 : 
     154               0 :   return NS_OK;
     155                 : }
     156                 : 
     157                 : void
     158               0 : nsSVGAElement::UnbindFromTree(bool aDeep, bool aNullParent)
     159                 : {
     160                 :   // If this link is ever reinserted into a document, it might
     161                 :   // be under a different xml:base, so forget the cached state now.
     162               0 :   Link::ResetLinkState(false);
     163                 :   
     164               0 :   nsIDocument* doc = GetCurrentDoc();
     165               0 :   if (doc) {
     166               0 :     doc->UnregisterPendingLinkUpdate(this);
     167                 :   }
     168                 : 
     169               0 :   nsSVGAElementBase::UnbindFromTree(aDeep, aNullParent);
     170               0 : }
     171                 : 
     172                 : nsLinkState
     173               0 : nsSVGAElement::GetLinkState() const
     174                 : {
     175               0 :   return Link::GetLinkState();
     176                 : }
     177                 : 
     178                 : already_AddRefed<nsIURI>
     179               0 : nsSVGAElement::GetHrefURI() const
     180                 : {
     181               0 :   nsCOMPtr<nsIURI> hrefURI;
     182               0 :   return IsLink(getter_AddRefs(hrefURI)) ? hrefURI.forget() : nsnull;
     183                 : }
     184                 : 
     185                 : 
     186                 : NS_IMETHODIMP_(bool)
     187               0 : nsSVGAElement::IsAttributeMapped(const nsIAtom* name) const
     188                 : {
     189                 :   static const MappedAttributeEntry* const map[] = {
     190                 :     sFEFloodMap,
     191                 :     sFiltersMap,
     192                 :     sFontSpecificationMap,
     193                 :     sGradientStopMap,
     194                 :     sLightingEffectsMap,
     195                 :     sMarkersMap,
     196                 :     sTextContentElementsMap,
     197                 :     sViewportsMap
     198                 :   };
     199                 : 
     200               0 :   return FindAttributeDependence(name, map) ||
     201               0 :     nsSVGAElementBase::IsAttributeMapped(name);
     202                 : }
     203                 : 
     204                 : bool
     205               0 : nsSVGAElement::IsFocusable(PRInt32 *aTabIndex, bool aWithMouse)
     206                 : {
     207               0 :   nsCOMPtr<nsIURI> uri;
     208               0 :   if (IsLink(getter_AddRefs(uri))) {
     209               0 :     if (aTabIndex) {
     210               0 :       *aTabIndex = ((sTabFocusModel & eTabFocus_linksMask) == 0 ? -1 : 0);
     211                 :     }
     212               0 :     return true;
     213                 :   }
     214                 : 
     215               0 :   if (aTabIndex) {
     216               0 :     *aTabIndex = -1;
     217                 :   }
     218                 : 
     219               0 :   return false;
     220                 : }
     221                 : 
     222                 : bool
     223               0 : nsSVGAElement::IsLink(nsIURI** aURI) const
     224                 : {
     225                 :   // To be a clickable XLink for styling and interaction purposes, we require:
     226                 :   //
     227                 :   //   xlink:href    - must be set
     228                 :   //   xlink:type    - must be unset or set to "" or set to "simple"
     229                 :   //   xlink:show    - must be unset or set to "", "new" or "replace"
     230                 :   //   xlink:actuate - must be unset or set to "" or "onRequest"
     231                 :   //
     232                 :   // For any other values, we're either not a *clickable* XLink, or the end
     233                 :   // result is poorly specified. Either way, we return false.
     234                 : 
     235                 :   static nsIContent::AttrValuesArray sTypeVals[] =
     236                 :     { &nsGkAtoms::_empty, &nsGkAtoms::simple, nsnull };
     237                 : 
     238                 :   static nsIContent::AttrValuesArray sShowVals[] =
     239                 :     { &nsGkAtoms::_empty, &nsGkAtoms::_new, &nsGkAtoms::replace, nsnull };
     240                 : 
     241                 :   static nsIContent::AttrValuesArray sActuateVals[] =
     242                 :     { &nsGkAtoms::_empty, &nsGkAtoms::onRequest, nsnull };
     243                 : 
     244                 :   // Optimization: check for href first for early return
     245                 :   const nsAttrValue* href = mAttrsAndChildren.GetAttr(nsGkAtoms::href,
     246               0 :                                                       kNameSpaceID_XLink);
     247               0 :   if (href &&
     248                 :       FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::type,
     249               0 :                       sTypeVals, eCaseMatters) !=
     250                 :                       nsIContent::ATTR_VALUE_NO_MATCH &&
     251                 :       FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show,
     252               0 :                       sShowVals, eCaseMatters) !=
     253                 :                       nsIContent::ATTR_VALUE_NO_MATCH &&
     254                 :       FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::actuate,
     255               0 :                       sActuateVals, eCaseMatters) !=
     256                 :                       nsIContent::ATTR_VALUE_NO_MATCH) {
     257               0 :     nsCOMPtr<nsIURI> baseURI = GetBaseURI();
     258                 :     // Get absolute URI
     259               0 :     nsAutoString str;
     260               0 :     mStringAttributes[HREF].GetAnimValue(str, this);
     261                 :     nsContentUtils::NewURIWithDocumentCharset(aURI, str,
     262               0 :                                               OwnerDoc(), baseURI);
     263                 :     // must promise out param is non-null if we return true
     264               0 :     return !!*aURI;
     265                 :   }
     266                 : 
     267               0 :   *aURI = nsnull;
     268               0 :   return false;
     269                 : }
     270                 : 
     271                 : void
     272               0 : nsSVGAElement::GetLinkTarget(nsAString& aTarget)
     273                 : {
     274               0 :   mStringAttributes[TARGET].GetAnimValue(aTarget, this);
     275               0 :   if (aTarget.IsEmpty()) {
     276                 : 
     277                 :     static nsIContent::AttrValuesArray sShowVals[] =
     278                 :       { &nsGkAtoms::_new, &nsGkAtoms::replace, nsnull };
     279                 : 
     280               0 :     switch (FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show,
     281               0 :                             sShowVals, eCaseMatters)) {
     282                 :     case 0:
     283               0 :       aTarget.AssignLiteral("_blank");
     284               0 :       return;
     285                 :     case 1:
     286               0 :       return;
     287                 :     }
     288               0 :     nsIDocument* ownerDoc = OwnerDoc();
     289               0 :     if (ownerDoc) {
     290               0 :       ownerDoc->GetBaseTarget(aTarget);
     291                 :     }
     292                 :   }
     293                 : }
     294                 : 
     295                 : nsEventStates
     296               0 : nsSVGAElement::IntrinsicState() const
     297                 : {
     298               0 :   return Link::LinkState() | nsSVGAElementBase::IntrinsicState();
     299                 : }
     300                 : 
     301                 : nsresult
     302               0 : nsSVGAElement::SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
     303                 :                        nsIAtom* aPrefix, const nsAString& aValue,
     304                 :                        bool aNotify)
     305                 : {
     306                 :   nsresult rv = nsSVGAElementBase::SetAttr(aNameSpaceID, aName, aPrefix,
     307               0 :                                            aValue, aNotify);
     308                 : 
     309                 :   // The ordering of the parent class's SetAttr call and Link::ResetLinkState
     310                 :   // is important here!  The attribute is not set until SetAttr returns, and
     311                 :   // we will need the updated attribute value because notifying the document
     312                 :   // that content states have changed will call IntrinsicState, which will try
     313                 :   // to get updated information about the visitedness from Link.
     314               0 :   if (aName == nsGkAtoms::href && aNameSpaceID == kNameSpaceID_XLink) {
     315               0 :     Link::ResetLinkState(!!aNotify);
     316                 :   }
     317                 : 
     318               0 :   return rv;
     319                 : }
     320                 : 
     321                 : nsresult
     322               0 : nsSVGAElement::UnsetAttr(PRInt32 aNameSpaceID, nsIAtom* aAttr,
     323                 :                          bool aNotify)
     324                 : {
     325               0 :   nsresult rv = nsSVGAElementBase::UnsetAttr(aNameSpaceID, aAttr, aNotify);
     326                 : 
     327                 :   // The ordering of the parent class's UnsetAttr call and Link::ResetLinkState
     328                 :   // is important here!  The attribute is not unset until UnsetAttr returns, and
     329                 :   // we will need the updated attribute value because notifying the document
     330                 :   // that content states have changed will call IntrinsicState, which will try
     331                 :   // to get updated information about the visitedness from Link.
     332               0 :   if (aAttr == nsGkAtoms::href && aNameSpaceID == kNameSpaceID_XLink) {
     333               0 :     Link::ResetLinkState(!!aNotify);
     334                 :   }
     335                 : 
     336               0 :   return rv;
     337                 : }
     338                 : 
     339                 : //----------------------------------------------------------------------
     340                 : // nsSVGElement methods
     341                 : 
     342                 : nsSVGElement::StringAttributesInfo
     343               0 : nsSVGAElement::GetStringInfo()
     344                 : {
     345                 :   return StringAttributesInfo(mStringAttributes, sStringInfo,
     346               0 :                               ArrayLength(sStringInfo));
     347                 : }

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