content/events/src/nsDOMMutationEvent.cpp

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  37
  38 #include "nsCOMPtr.h"
  39 #include "nsDOMMutationEvent.h"
  40 #include "nsMutationEvent.h"
  41 #include "nsContentUtils.h"
  42
  43 class nsPresContext;
  44
  45 nsDOMMutationEvent::nsDOMMutationEvent(nsPresContext* aPresContext,
  46                                        nsMutationEvent* aEvent)
  47   : nsDOMEvent(aPresContext, aEvent ? aEvent :
  48                new nsMutationEvent(PR_FALSE, 0))
  49 {
  50   mEventIsInternal = (aEvent == nsnull);
  51 }
  52
  53 nsDOMMutationEvent::~nsDOMMutationEvent()
  54 {
  55   if (mEventIsInternal) {
  56     nsMutationEvent* mutation = static_cast<nsMutationEvent*>(mEvent);
  57     delete mutation;
  58     mEvent = nsnull;
  59   }
  60 }
  61
  62 NS_INTERFACE_MAP_BEGIN(nsDOMMutationEvent)
  63   NS_INTERFACE_MAP_ENTRY(nsIDOMMutationEvent)
  64   NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(MutationEvent)
  65 NS_INTERFACE_MAP_END_INHERITING(nsDOMEvent)
  66
  67 NS_IMPL_ADDREF_INHERITED(nsDOMMutationEvent, nsDOMEvent)
  68 NS_IMPL_RELEASE_INHERITED(nsDOMMutationEvent, nsDOMEvent)
  69
  70 NS_IMETHODIMP
  71 nsDOMMutationEvent::GetRelatedNode(nsIDOMNode** aRelatedNode)
  72 {
  73   *aRelatedNode = nsnull;
  74   nsMutationEvent* mutation = static_cast<nsMutationEvent*>(mEvent);
  75   *aRelatedNode = mutation->mRelatedNode;
  76   NS_IF_ADDREF(*aRelatedNode);
  77   return NS_OK;
  78 }
  79
  80 NS_IMETHODIMP
  81 nsDOMMutationEvent::GetPrevValue(nsAString& aPrevValue)
  82 {
  83   nsMutationEvent* mutation = static_cast<nsMutationEvent*>(mEvent);
  84   if (mutation->mPrevAttrValue)
  85     mutation->mPrevAttrValue->ToString(aPrevValue);
  86   return NS_OK;
  87 }
  88
  89 NS_IMETHODIMP
  90 nsDOMMutationEvent::GetNewValue(nsAString& aNewValue)
  91 {
  92   nsMutationEvent* mutation = static_cast<nsMutationEvent*>(mEvent);
  93   if (mutation->mNewAttrValue)
  94       mutation->mNewAttrValue->ToString(aNewValue);
  95   return NS_OK;
  96 }
  97
  98 NS_IMETHODIMP
  99 nsDOMMutationEvent::GetAttrName(nsAString& aAttrName)
 100 {
 101   nsMutationEvent* mutation = static_cast<nsMutationEvent*>(mEvent);
 102   if (mutation->mAttrName)
 103       mutation->mAttrName->ToString(aAttrName);
 104   return NS_OK;
 105 }
 106
 107 NS_IMETHODIMP
 108 nsDOMMutationEvent::GetAttrChange(PRUint16* aAttrChange)
 109 {
 110   *aAttrChange = 0;
 111   nsMutationEvent* mutation = static_cast<nsMutationEvent*>(mEvent);
 112   if (mutation->mAttrChange)
 113       *aAttrChange = mutation->mAttrChange;
 114   return NS_OK;
 115 }
 116
 117 NS_IMETHODIMP
 118 nsDOMMutationEvent::InitMutationEvent(const nsAString& aTypeArg, PRBool aCanBubbleArg, PRBool aCancelableArg, nsIDOMNode* aRelatedNodeArg, const nsAString& aPrevValueArg, const nsAString& aNewValueArg, const nsAString& aAttrNameArg, PRUint16 aAttrChangeArg)
 119 {
 120   nsresult rv = nsDOMEvent::InitEvent(aTypeArg, aCanBubbleArg, aCancelableArg);
 121   NS_ENSURE_SUCCESS(rv, rv);
 122
 123   nsMutationEvent* mutation = static_cast<nsMutationEvent*>(mEvent);
 124   mutation->mRelatedNode = aRelatedNodeArg;
 125   if (!aPrevValueArg.IsEmpty())
 126     mutation->mPrevAttrValue = do_GetAtom(aPrevValueArg);
 127   if (!aNewValueArg.IsEmpty())
 128     mutation->mNewAttrValue = do_GetAtom(aNewValueArg);
 129   if (!aAttrNameArg.IsEmpty()) {
 130     mutation->mAttrName = do_GetAtom(aAttrNameArg);
 131   }
 132   mutation->mAttrChange = aAttrChangeArg;
 133
 134   return NS_OK;
 135 }
 136
 137 nsresult NS_NewDOMMutationEvent(nsIDOMEvent** aInstancePtrResult,
 138                                 nsPresContext* aPresContext,
 139                                 nsMutationEvent *aEvent)
 140 {
 141   nsDOMMutationEvent* it = new nsDOMMutationEvent(aPresContext, aEvent);
 142   if (nsnull == it) {
 143     return NS_ERROR_OUT_OF_MEMORY;
 144   }
 145
 146   return CallQueryInterface(it, aInstancePtrResult);
 147 }