LCOV - code coverage report
Current view: directory - content/smil - nsSMILMappedAttribute.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 49 0 0.0 %
Date: 2012-06-02 Functions: 7 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 the Mozilla SMIL module.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is the Mozilla Corporation.
      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                 : /* representation of a SMIL-animatable mapped attribute on an element */
      39                 : #include "nsSMILMappedAttribute.h"
      40                 : #include "nsPropertyTable.h"
      41                 : #include "nsContentErrors.h" // For NS_PROPTABLE_PROP_OVERWRITTEN
      42                 : #include "nsSMILValue.h"
      43                 : #include "nsSMILCSSValueType.h"
      44                 : #include "nsIContent.h"
      45                 : #include "nsIDocument.h"
      46                 : #include "nsIPresShell.h"
      47                 : #include "nsCSSProps.h"
      48                 : #include "mozilla/dom/Element.h"
      49                 : 
      50                 : // Callback function, for freeing string buffers stored in property table
      51                 : static void
      52               0 : ReleaseStringBufferPropertyValue(void*    aObject,       /* unused */
      53                 :                                  nsIAtom* aPropertyName, /* unused */
      54                 :                                  void*    aPropertyValue,
      55                 :                                  void*    aData          /* unused */)
      56                 : {
      57               0 :   nsStringBuffer* buf = static_cast<nsStringBuffer*>(aPropertyValue);
      58               0 :   buf->Release();
      59               0 : }
      60                 : 
      61                 : 
      62                 : nsresult
      63               0 : nsSMILMappedAttribute::ValueFromString(const nsAString& aStr,
      64                 :                                        const nsISMILAnimationElement* aSrcElement,
      65                 :                                        nsSMILValue& aValue,
      66                 :                                        bool& aPreventCachingOfSandwich) const
      67                 : {
      68               0 :   NS_ENSURE_TRUE(IsPropertyAnimatable(mPropID), NS_ERROR_FAILURE);
      69                 : 
      70                 :   nsSMILCSSValueType::ValueFromString(mPropID, mElement, aStr, aValue,
      71               0 :                                       &aPreventCachingOfSandwich);
      72               0 :   return aValue.IsNull() ? NS_ERROR_FAILURE : NS_OK;
      73                 : }
      74                 : 
      75                 : nsSMILValue
      76               0 : nsSMILMappedAttribute::GetBaseValue() const
      77                 : {
      78               0 :   nsAutoString baseStringValue;
      79               0 :   nsRefPtr<nsIAtom> attrName = GetAttrNameAtom();
      80                 :   bool success = mElement->GetAttr(kNameSpaceID_None, attrName,
      81               0 :                                      baseStringValue);
      82               0 :   nsSMILValue baseValue;
      83               0 :   if (success) {
      84                 :     // For base values, we don't need to worry whether the value returned is
      85                 :     // context-sensitive or not since the compositor will take care of comparing
      86                 :     // the returned (computed) base value and its cached value and determining
      87                 :     // if an update is required or not.
      88                 :     nsSMILCSSValueType::ValueFromString(mPropID, mElement,
      89               0 :                                         baseStringValue, baseValue, nsnull);
      90                 :   } else {
      91                 :     // Attribute is unset -- use computed value.
      92                 :     // FIRST: Temporarily clear animated value, to make sure it doesn't pollute
      93                 :     // the computed value. (We want base value, _without_ animations applied.)
      94                 :     void* buf = mElement->UnsetProperty(SMIL_MAPPED_ATTR_ANIMVAL,
      95               0 :                                         attrName, nsnull);
      96               0 :     FlushChangesToTargetAttr();
      97                 : 
      98                 :     // SECOND: we use nsSMILCSSProperty::GetBaseValue to look up the property's
      99                 :     // computed value.  NOTE: This call will temporarily clear the SMIL
     100                 :     // override-style for the corresponding CSS property on our target element.
     101                 :     // This prevents any animations that target the CSS property from affecting
     102                 :     // animations that target the mapped attribute.
     103               0 :     baseValue = nsSMILCSSProperty::GetBaseValue();
     104                 : 
     105                 :     // FINALLY: If we originally had an animated value set, then set it again.
     106               0 :     if (buf) {
     107                 :       mElement->SetProperty(SMIL_MAPPED_ATTR_ANIMVAL, attrName, buf,
     108               0 :                             ReleaseStringBufferPropertyValue);
     109               0 :       FlushChangesToTargetAttr();
     110                 :     }
     111                 :   }
     112                 :   return baseValue;
     113                 : }
     114                 : 
     115                 : nsresult
     116               0 : nsSMILMappedAttribute::SetAnimValue(const nsSMILValue& aValue)
     117                 : {
     118               0 :   NS_ENSURE_TRUE(IsPropertyAnimatable(mPropID), NS_ERROR_FAILURE);
     119                 : 
     120                 :   // Convert nsSMILValue to string
     121               0 :   nsAutoString valStr;
     122               0 :   if (!nsSMILCSSValueType::ValueToString(aValue, valStr)) {
     123               0 :     NS_WARNING("Failed to convert nsSMILValue for mapped attr into a string");
     124               0 :     return NS_ERROR_FAILURE;
     125                 :   }
     126                 : 
     127                 :   // Set the string as this mapped attribute's animated value.
     128                 :   nsStringBuffer* valStrBuf =
     129               0 :     nsCSSValue::BufferFromString(nsString(valStr)).get();
     130               0 :   nsRefPtr<nsIAtom> attrName = GetAttrNameAtom();
     131                 :   nsresult rv = mElement->SetProperty(SMIL_MAPPED_ATTR_ANIMVAL,
     132                 :                                       attrName, valStrBuf,
     133               0 :                                       ReleaseStringBufferPropertyValue);
     134               0 :   if (rv == NS_PROPTABLE_PROP_OVERWRITTEN) {
     135               0 :     rv = NS_OK;
     136                 :   }
     137               0 :   FlushChangesToTargetAttr();
     138                 : 
     139               0 :   return rv;
     140                 : }
     141                 : 
     142                 : void
     143               0 : nsSMILMappedAttribute::ClearAnimValue()
     144                 : {
     145               0 :   nsRefPtr<nsIAtom> attrName = GetAttrNameAtom();
     146               0 :   mElement->DeleteProperty(SMIL_MAPPED_ATTR_ANIMVAL, attrName);
     147               0 :   FlushChangesToTargetAttr();
     148               0 : }
     149                 : 
     150                 : void
     151               0 : nsSMILMappedAttribute::FlushChangesToTargetAttr() const
     152                 : {
     153                 :   // Clear animated content-style-rule
     154                 :   mElement->DeleteProperty(SMIL_MAPPED_ATTR_ANIMVAL,
     155               0 :                            SMIL_MAPPED_ATTR_STYLERULE_ATOM);
     156               0 :   nsIDocument* doc = mElement->GetCurrentDoc();
     157                 : 
     158                 :   // Request animation restyle
     159               0 :   if (doc) {
     160               0 :     nsIPresShell* shell = doc->GetShell();
     161               0 :     if (shell) {
     162               0 :       shell->RestyleForAnimation(mElement, eRestyle_Self);
     163                 :     }
     164                 :   }
     165               0 : }
     166                 : 
     167                 : already_AddRefed<nsIAtom>
     168               0 : nsSMILMappedAttribute::GetAttrNameAtom() const
     169                 : {
     170               0 :   return do_GetAtom(nsCSSProps::GetStringValue(mPropID));
     171                 : }

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