LCOV - code coverage report
Current view: directory - content/svg/content/src - nsSVGMpathElement.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 91 2 2.2 %
Date: 2012-06-02 Functions: 25 2 8.0 %

       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 the Mozilla SVG project.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is the Mozilla Foundation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Daniel Holbert <dholbert@mozilla.com>
      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 "nsSVGMpathElement.h"
      41                 : #include "nsAutoPtr.h"
      42                 : #include "nsDebug.h"
      43                 : #include "nsSVGPathElement.h"
      44                 : #include "nsSVGAnimateMotionElement.h"
      45                 : #include "nsContentUtils.h"
      46                 : 
      47                 : using namespace mozilla;
      48                 : using namespace mozilla::dom;
      49                 : 
      50                 : nsSVGElement::StringInfo nsSVGMpathElement::sStringInfo[1] =
      51                 : {
      52                 :   { &nsGkAtoms::href, kNameSpaceID_XLink, false }
      53                 : };
      54                 : 
      55               0 : NS_IMPL_NS_NEW_SVG_ELEMENT(Mpath)
      56                 : 
      57                 : // Cycle collection magic -- based on nsSVGUseElement
      58            1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(nsSVGMpathElement)
      59               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(nsSVGMpathElement,
      60                 :                                                 nsSVGMpathElementBase)
      61               0 :   tmp->UnlinkHrefTarget(false);
      62               0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
      63                 : 
      64               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(nsSVGMpathElement,
      65                 :                                                   nsSVGMpathElementBase)
      66               0 :   tmp->mHrefTarget.Traverse(&cb);
      67               0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
      68                 : 
      69                 : //----------------------------------------------------------------------
      70                 : // nsISupports methods
      71                 : 
      72               0 : NS_IMPL_ADDREF_INHERITED(nsSVGMpathElement,nsSVGMpathElementBase)
      73               0 : NS_IMPL_RELEASE_INHERITED(nsSVGMpathElement,nsSVGMpathElementBase)
      74                 : 
      75               0 : DOMCI_NODE_DATA(SVGMpathElement, nsSVGMpathElement)
      76                 : 
      77               0 : NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(nsSVGMpathElement)
      78               0 :   NS_NODE_INTERFACE_TABLE6(nsSVGMpathElement, nsIDOMNode, nsIDOMElement,
      79                 :                            nsIDOMSVGElement,  nsIDOMSVGURIReference,
      80                 :                            nsIDOMSVGMpathElement, nsIMutationObserver)
      81               0 :   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGMpathElement)
      82               0 : NS_INTERFACE_MAP_END_INHERITING(nsSVGMpathElementBase)
      83                 : 
      84                 : // Constructor
      85                 : #ifdef _MSC_VER
      86                 : // Disable "warning C4355: 'this' : used in base member initializer list".
      87                 : // We can ignore that warning because we know that mHrefTarget's constructor 
      88                 : // doesn't dereference the pointer passed to it.
      89                 : #pragma warning(push)
      90                 : #pragma warning(disable:4355)
      91                 : #endif
      92               0 : nsSVGMpathElement::nsSVGMpathElement(already_AddRefed<nsINodeInfo> aNodeInfo)
      93                 :   : nsSVGMpathElementBase(aNodeInfo),
      94               0 :     mHrefTarget(this)
      95                 : #ifdef _MSC_VER
      96                 : #pragma warning(pop)
      97                 : #endif
      98                 : {
      99               0 : }
     100                 : 
     101               0 : nsSVGMpathElement::~nsSVGMpathElement()
     102                 : {
     103               0 :   UnlinkHrefTarget(false);
     104               0 : }
     105                 : 
     106                 : //----------------------------------------------------------------------
     107                 : // nsIDOMNode methods
     108                 : 
     109               0 : NS_IMPL_ELEMENT_CLONE_WITH_INIT(nsSVGMpathElement)
     110                 : 
     111                 : //----------------------------------------------------------------------
     112                 : // nsIDOMSVGURIReference methods
     113                 : 
     114                 : /* readonly attribute nsIDOMSVGAnimatedString href; */
     115                 : NS_IMETHODIMP
     116               0 : nsSVGMpathElement::GetHref(nsIDOMSVGAnimatedString** aHref)
     117                 : {
     118               0 :   return mStringAttributes[HREF].ToDOMAnimatedString(aHref, this);
     119                 : }
     120                 : 
     121                 : //----------------------------------------------------------------------
     122                 : // nsIContent methods
     123                 : 
     124                 : nsresult
     125               0 : nsSVGMpathElement::BindToTree(nsIDocument* aDocument,
     126                 :                               nsIContent* aParent,
     127                 :                               nsIContent* aBindingParent,
     128                 :                               bool aCompileEventHandlers)
     129                 : {
     130               0 :   NS_ABORT_IF_FALSE(!mHrefTarget.get(),
     131                 :                     "Shouldn't have href-target yet "
     132                 :                     "(or it should've been cleared)");
     133                 :   nsresult rv = nsSVGMpathElementBase::BindToTree(aDocument, aParent,
     134                 :                                                   aBindingParent,
     135               0 :                                                   aCompileEventHandlers);
     136               0 :   NS_ENSURE_SUCCESS(rv,rv);
     137                 : 
     138               0 :   if (aDocument) {
     139                 :     const nsAttrValue* hrefAttrValue =
     140               0 :       mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink);
     141               0 :     if (hrefAttrValue) {
     142               0 :       UpdateHrefTarget(aParent, hrefAttrValue->GetStringValue());
     143                 :     }
     144                 :   }
     145                 : 
     146               0 :   return NS_OK;
     147                 : }
     148                 : 
     149                 : void
     150               0 : nsSVGMpathElement::UnbindFromTree(bool aDeep, bool aNullParent)
     151                 : {
     152               0 :   UnlinkHrefTarget(true);
     153               0 :   nsSVGMpathElementBase::UnbindFromTree(aDeep, aNullParent);
     154               0 : }
     155                 : 
     156                 : bool
     157               0 : nsSVGMpathElement::ParseAttribute(PRInt32 aNamespaceID,
     158                 :                                   nsIAtom* aAttribute,
     159                 :                                   const nsAString& aValue,
     160                 :                                   nsAttrValue& aResult)
     161                 : {
     162                 :   bool returnVal =
     163                 :     nsSVGMpathElementBase::ParseAttribute(aNamespaceID, aAttribute,
     164               0 :                                           aValue, aResult);
     165               0 :   if (aNamespaceID == kNameSpaceID_XLink &&
     166                 :       aAttribute == nsGkAtoms::href &&
     167               0 :       IsInDoc()) {
     168                 :     // NOTE: If we fail the IsInDoc call, it's ok -- we'll update the target
     169                 :     // on next BindToTree call.
     170               0 :     UpdateHrefTarget(GetParent(), aValue);
     171                 :   }
     172               0 :   return returnVal;
     173                 : }
     174                 : 
     175                 : nsresult
     176               0 : nsSVGMpathElement::UnsetAttr(PRInt32 aNamespaceID,
     177                 :                              nsIAtom* aAttribute, bool aNotify)
     178                 : {
     179                 :   nsresult rv = nsSVGMpathElementBase::UnsetAttr(aNamespaceID, aAttribute,
     180               0 :                                                  aNotify);
     181               0 :   NS_ENSURE_SUCCESS(rv, rv);
     182                 : 
     183               0 :   if (aNamespaceID == kNameSpaceID_XLink &&
     184                 :       aAttribute == nsGkAtoms::href) {
     185               0 :     UnlinkHrefTarget(true);
     186                 :   }
     187                 : 
     188               0 :   return NS_OK;
     189                 : }
     190                 : 
     191                 : //----------------------------------------------------------------------
     192                 : // nsSVGElement methods
     193                 : 
     194                 : nsSVGElement::StringAttributesInfo
     195               0 : nsSVGMpathElement::GetStringInfo()
     196                 : {
     197                 :   return StringAttributesInfo(mStringAttributes, sStringInfo,
     198               0 :                               ArrayLength(sStringInfo));
     199                 : }
     200                 : 
     201                 : //----------------------------------------------------------------------
     202                 : // nsIMutationObserver methods
     203                 : 
     204                 : void
     205               0 : nsSVGMpathElement::AttributeChanged(nsIDocument* aDocument,
     206                 :                                     Element* aElement,
     207                 :                                     PRInt32 aNameSpaceID,
     208                 :                                     nsIAtom* aAttribute,
     209                 :                                     PRInt32 aModType)
     210                 : {
     211               0 :   if (aNameSpaceID == kNameSpaceID_None) {
     212               0 :     if (aAttribute == nsGkAtoms::d) {
     213               0 :       NotifyParentOfMpathChange(GetParent());
     214                 :     }
     215                 :   }
     216               0 : }
     217                 : 
     218                 : //----------------------------------------------------------------------
     219                 : // Public helper methods
     220                 : 
     221                 : nsSVGPathElement*
     222               0 : nsSVGMpathElement::GetReferencedPath()
     223                 : {
     224               0 :   if (!HasAttr(kNameSpaceID_XLink, nsGkAtoms::href)) {
     225               0 :     NS_ABORT_IF_FALSE(!mHrefTarget.get(),
     226                 :                       "We shouldn't have an xlink:href target "
     227                 :                       "if we don't have an xlink:href attribute");
     228               0 :     return nsnull;
     229                 :   }
     230                 : 
     231               0 :   nsIContent* genericTarget = mHrefTarget.get();
     232               0 :   if (genericTarget && genericTarget->IsSVG(nsGkAtoms::path)) {
     233               0 :     return static_cast<nsSVGPathElement*>(genericTarget);
     234                 :   }
     235               0 :   return nsnull;
     236                 : }
     237                 : 
     238                 : //----------------------------------------------------------------------
     239                 : // Protected helper methods
     240                 : 
     241                 : void
     242               0 : nsSVGMpathElement::UpdateHrefTarget(nsIContent* aParent,
     243                 :                                     const nsAString& aHrefStr)
     244                 : {
     245               0 :   nsCOMPtr<nsIURI> targetURI;
     246               0 :   nsCOMPtr<nsIURI> baseURI = GetBaseURI();
     247               0 :   nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(targetURI),
     248               0 :                                             aHrefStr, OwnerDoc(), baseURI);
     249                 : 
     250                 :   // Stop observing old target (if any)
     251               0 :   if (mHrefTarget.get()) {
     252               0 :     mHrefTarget.get()->RemoveMutationObserver(this);
     253                 :   }
     254                 : 
     255               0 :   if (aParent) {
     256                 :     // Pass in |aParent| instead of |this| -- first argument is only used
     257                 :     // for a call to GetCurrentDoc(), and |this| might not have a current
     258                 :     // document yet (if our caller is BindToTree).
     259               0 :     mHrefTarget.Reset(aParent, targetURI);
     260                 :   } else {
     261                 :     // if we don't have a parent, then there's no animateMotion element
     262                 :     // depending on our target, so there's no point tracking it right now.
     263               0 :     mHrefTarget.Unlink();
     264                 :   }
     265                 : 
     266                 :   // Start observing new target (if any)
     267               0 :   if (mHrefTarget.get()) {
     268               0 :     mHrefTarget.get()->AddMutationObserver(this);
     269                 :   }
     270                 : 
     271               0 :   NotifyParentOfMpathChange(aParent);
     272               0 : }
     273                 : 
     274                 : void
     275               0 : nsSVGMpathElement::UnlinkHrefTarget(bool aNotifyParent)
     276                 : {
     277                 :   // Stop observing old target (if any)
     278               0 :   if (mHrefTarget.get()) {
     279               0 :     mHrefTarget.get()->RemoveMutationObserver(this);
     280                 :   }
     281               0 :   mHrefTarget.Unlink();
     282                 : 
     283               0 :   if (aNotifyParent) {
     284               0 :     NotifyParentOfMpathChange(GetParent());
     285                 :   }
     286               0 : }
     287                 : 
     288                 : void
     289               0 : nsSVGMpathElement::NotifyParentOfMpathChange(nsIContent* aParent)
     290                 : {
     291               0 :   if (aParent && aParent->IsSVG(nsGkAtoms::animateMotion)) {
     292                 : 
     293                 :     nsSVGAnimateMotionElement* animateMotionParent =
     294               0 :       static_cast<nsSVGAnimateMotionElement*>(aParent);
     295                 : 
     296               0 :     animateMotionParent->MpathChanged();
     297               0 :     AnimationNeedsResample();
     298                 :   }
     299            4392 : }

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