LCOV - app.info - content/svg/content/src/nsSVGMpathElement.cpp

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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