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      1 /*
      2  * Copyright (C) 2006 Apple Inc. All rights reserved.
      3  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann (at) kde.org>
      4  * Copyright (C) 2007 Rob Buis <buis (at) kde.org>
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  */
     21 
     22 #include "config.h"
     23 
     24 #if ENABLE(SVG)
     25 #include "SVGDocumentExtensions.h"
     26 
     27 #include "Console.h"
     28 #include "DOMWindow.h"
     29 #include "Document.h"
     30 #include "EventListener.h"
     31 #include "Frame.h"
     32 #include "FrameLoader.h"
     33 #include "Page.h"
     34 #include "SMILTimeContainer.h"
     35 #include "SVGElement.h"
     36 #include "SVGSMILElement.h"
     37 #include "SVGSVGElement.h"
     38 #include "ScriptController.h"
     39 #include "ScriptableDocumentParser.h"
     40 #include <wtf/text/AtomicString.h>
     41 
     42 namespace WebCore {
     43 
     44 SVGDocumentExtensions::SVGDocumentExtensions(Document* document)
     45     : m_document(document)
     46     , m_resourcesCache(adoptPtr(new SVGResourcesCache))
     47 {
     48 }
     49 
     50 SVGDocumentExtensions::~SVGDocumentExtensions()
     51 {
     52     deleteAllValues(m_animatedElements);
     53     deleteAllValues(m_pendingResources);
     54 }
     55 
     56 void SVGDocumentExtensions::addTimeContainer(SVGSVGElement* element)
     57 {
     58     m_timeContainers.add(element);
     59 }
     60 
     61 void SVGDocumentExtensions::removeTimeContainer(SVGSVGElement* element)
     62 {
     63     m_timeContainers.remove(element);
     64 }
     65 
     66 void SVGDocumentExtensions::addResource(const AtomicString& id, RenderSVGResourceContainer* resource)
     67 {
     68     ASSERT(resource);
     69 
     70     if (id.isEmpty())
     71         return;
     72 
     73     // Replaces resource if already present, to handle potential id changes
     74     m_resources.set(id, resource);
     75 }
     76 
     77 void SVGDocumentExtensions::removeResource(const AtomicString& id)
     78 {
     79     if (id.isEmpty() || !m_resources.contains(id))
     80         return;
     81 
     82     m_resources.remove(id);
     83 }
     84 
     85 RenderSVGResourceContainer* SVGDocumentExtensions::resourceById(const AtomicString& id) const
     86 {
     87     if (id.isEmpty())
     88         return 0;
     89 
     90     return m_resources.get(id);
     91 }
     92 
     93 void SVGDocumentExtensions::startAnimations()
     94 {
     95     // FIXME: Eventually every "Time Container" will need a way to latch on to some global timer
     96     // starting animations for a document will do this "latching"
     97 #if ENABLE(SVG_ANIMATION)
     98     // FIXME: We hold a ref pointers to prevent a shadow tree from getting removed out from underneath us.
     99     // In the future we should refactor the use-element to avoid this. See https://webkit.org/b/53704
    100     Vector<RefPtr<SVGSVGElement> > timeContainers;
    101     timeContainers.appendRange(m_timeContainers.begin(), m_timeContainers.end());
    102     Vector<RefPtr<SVGSVGElement> >::iterator end = timeContainers.end();
    103     for (Vector<RefPtr<SVGSVGElement> >::iterator itr = timeContainers.begin(); itr != end; ++itr)
    104         (*itr)->timeContainer()->begin();
    105 #endif
    106 }
    107 
    108 void SVGDocumentExtensions::pauseAnimations()
    109 {
    110     HashSet<SVGSVGElement*>::iterator end = m_timeContainers.end();
    111     for (HashSet<SVGSVGElement*>::iterator itr = m_timeContainers.begin(); itr != end; ++itr)
    112         (*itr)->pauseAnimations();
    113 }
    114 
    115 void SVGDocumentExtensions::unpauseAnimations()
    116 {
    117     HashSet<SVGSVGElement*>::iterator end = m_timeContainers.end();
    118     for (HashSet<SVGSVGElement*>::iterator itr = m_timeContainers.begin(); itr != end; ++itr)
    119         (*itr)->unpauseAnimations();
    120 }
    121 
    122 bool SVGDocumentExtensions::sampleAnimationAtTime(const String& elementId, SVGSMILElement* element, double time)
    123 {
    124 #if !ENABLE(SVG_ANIMATION)
    125     UNUSED_PARAM(elementId);
    126     UNUSED_PARAM(element);
    127     UNUSED_PARAM(time);
    128     return false;
    129 #else
    130     ASSERT(element);
    131     SMILTimeContainer* container = element->timeContainer();
    132     if (!container || container->isPaused())
    133         return false;
    134 
    135     container->sampleAnimationAtTime(elementId, time);
    136     return true;
    137 #endif
    138 }
    139 
    140 void SVGDocumentExtensions::addAnimationElementToTarget(SVGSMILElement* animationElement, SVGElement* targetElement)
    141 {
    142     ASSERT(targetElement);
    143     ASSERT(animationElement);
    144 
    145     if (HashSet<SVGSMILElement*>* animationElementsForTarget = m_animatedElements.get(targetElement)) {
    146         animationElementsForTarget->add(animationElement);
    147         return;
    148     }
    149 
    150     HashSet<SVGSMILElement*>* animationElementsForTarget = new HashSet<SVGSMILElement*>;
    151     animationElementsForTarget->add(animationElement);
    152     m_animatedElements.set(targetElement, animationElementsForTarget);
    153 }
    154 
    155 void SVGDocumentExtensions::removeAnimationElementFromTarget(SVGSMILElement* animationElement, SVGElement* targetElement)
    156 {
    157     ASSERT(targetElement);
    158     ASSERT(animationElement);
    159 
    160     HashMap<SVGElement*, HashSet<SVGSMILElement*>* >::iterator it = m_animatedElements.find(targetElement);
    161     ASSERT(it != m_animatedElements.end());
    162 
    163     HashSet<SVGSMILElement*>* animationElementsForTarget = it->second;
    164     ASSERT(!animationElementsForTarget->isEmpty());
    165 
    166     animationElementsForTarget->remove(animationElement);
    167     if (animationElementsForTarget->isEmpty()) {
    168         m_animatedElements.remove(it);
    169         delete animationElementsForTarget;
    170     }
    171 }
    172 
    173 void SVGDocumentExtensions::removeAllAnimationElementsFromTarget(SVGElement* targetElement)
    174 {
    175     ASSERT(targetElement);
    176     HashSet<SVGSMILElement*>* animationElementsForTarget = m_animatedElements.take(targetElement);
    177     if (!animationElementsForTarget)
    178         return;
    179 #if ENABLE(SVG_ANIMATION)
    180     HashSet<SVGSMILElement*>::iterator it = animationElementsForTarget->begin();
    181     HashSet<SVGSMILElement*>::iterator end = animationElementsForTarget->end();
    182     for (; it != end; ++it)
    183         (*it)->resetTargetElement();
    184     delete animationElementsForTarget;
    185 #else
    186     ASSERT_NOT_REACHED();
    187 #endif
    188 }
    189 
    190 // FIXME: Callers should probably use ScriptController::eventHandlerLineNumber()
    191 static int parserLineNumber(Document* document)
    192 {
    193     ScriptableDocumentParser* parser = document->scriptableDocumentParser();
    194     if (!parser)
    195         return 1;
    196     return parser->lineNumber();
    197 }
    198 
    199 static void reportMessage(Document* document, MessageLevel level, const String& message)
    200 {
    201     if (Frame* frame = document->frame())
    202         frame->domWindow()->console()->addMessage(JSMessageSource, LogMessageType, level, message, parserLineNumber(document), String());
    203 }
    204 
    205 void SVGDocumentExtensions::reportWarning(const String& message)
    206 {
    207     reportMessage(m_document, WarningMessageLevel, "Warning: " + message);
    208 }
    209 
    210 void SVGDocumentExtensions::reportError(const String& message)
    211 {
    212     reportMessage(m_document, ErrorMessageLevel, "Error: " + message);
    213 }
    214 
    215 void SVGDocumentExtensions::addPendingResource(const AtomicString& id, PassRefPtr<SVGStyledElement> obj)
    216 {
    217     ASSERT(obj);
    218 
    219     if (id.isEmpty())
    220         return;
    221 
    222     if (m_pendingResources.contains(id))
    223         m_pendingResources.get(id)->add(obj);
    224     else {
    225         SVGPendingElements* set = new SVGPendingElements;
    226         set->add(obj);
    227 
    228         m_pendingResources.add(id, set);
    229     }
    230 }
    231 
    232 bool SVGDocumentExtensions::isPendingResource(const AtomicString& id) const
    233 {
    234     if (id.isEmpty())
    235         return false;
    236 
    237     return m_pendingResources.contains(id);
    238 }
    239 
    240 PassOwnPtr<HashSet<RefPtr<SVGStyledElement> > > SVGDocumentExtensions::removePendingResource(const AtomicString& id)
    241 {
    242     ASSERT(m_pendingResources.contains(id));
    243 
    244     OwnPtr<SVGPendingElements> set(m_pendingResources.get(id));
    245     m_pendingResources.remove(id);
    246     return set.release();
    247 }
    248 
    249 }
    250 
    251 #endif
    252