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lightning-sunbird  0.9+nobinonly
nsDOMMutationEvent.cpp
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00037 
00038 #include "nsCOMPtr.h"
00039 #include "nsDOMMutationEvent.h"
00040 #include "nsMutationEvent.h"
00041 #include "nsContentUtils.h"
00042 
00043 class nsPresContext;
00044 
00045 nsDOMMutationEvent::nsDOMMutationEvent(nsPresContext* aPresContext,
00046                                        nsMutationEvent* aEvent)
00047   : nsDOMEvent(aPresContext, aEvent ? aEvent :
00048                new nsMutationEvent(PR_FALSE, 0))
00049 {  
00050   if ( aEvent ) {
00051     mEventIsInternal = PR_FALSE;
00052     nsMutationEvent* mutation = (nsMutationEvent*)aEvent;
00053     SetTarget(mutation->mTarget);
00054   }
00055   else
00056   {
00057     mEventIsInternal = PR_TRUE;
00058   }
00059 }
00060 
00061 nsDOMMutationEvent::~nsDOMMutationEvent()
00062 {
00063   if (mEventIsInternal) {
00064     delete mEvent->userType;
00065     nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
00066     delete mutation;
00067     mEvent = nsnull;
00068   }
00069 }
00070 
00071 NS_INTERFACE_MAP_BEGIN(nsDOMMutationEvent)
00072   NS_INTERFACE_MAP_ENTRY(nsIDOMMutationEvent)
00073   NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(MutationEvent)
00074 NS_INTERFACE_MAP_END_INHERITING(nsDOMEvent)
00075 
00076 NS_IMPL_ADDREF_INHERITED(nsDOMMutationEvent, nsDOMEvent)
00077 NS_IMPL_RELEASE_INHERITED(nsDOMMutationEvent, nsDOMEvent)
00078 
00079 NS_IMETHODIMP
00080 nsDOMMutationEvent::GetRelatedNode(nsIDOMNode** aRelatedNode)
00081 {
00082   *aRelatedNode = nsnull;
00083   nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
00084   *aRelatedNode = mutation->mRelatedNode;
00085   NS_IF_ADDREF(*aRelatedNode);
00086   return NS_OK;
00087 }
00088 
00089 NS_IMETHODIMP
00090 nsDOMMutationEvent::GetPrevValue(nsAString& aPrevValue)
00091 {
00092   nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
00093   if (mutation->mPrevAttrValue)
00094     mutation->mPrevAttrValue->ToString(aPrevValue);
00095   return NS_OK;
00096 }
00097 
00098 NS_IMETHODIMP
00099 nsDOMMutationEvent::GetNewValue(nsAString& aNewValue)
00100 {
00101   nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
00102   if (mutation->mNewAttrValue)
00103       mutation->mNewAttrValue->ToString(aNewValue);
00104   return NS_OK;
00105 }
00106 
00107 NS_IMETHODIMP
00108 nsDOMMutationEvent::GetAttrName(nsAString& aAttrName)
00109 {
00110   nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
00111   if (mutation->mAttrName)
00112       mutation->mAttrName->ToString(aAttrName);
00113   return NS_OK;
00114 }
00115 
00116 NS_IMETHODIMP
00117 nsDOMMutationEvent::GetAttrChange(PRUint16* aAttrChange)
00118 {
00119   *aAttrChange = 0;
00120   nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
00121   if (mutation->mAttrChange)
00122       *aAttrChange = mutation->mAttrChange;
00123   return NS_OK;
00124 }
00125 
00126 NS_IMETHODIMP
00127 nsDOMMutationEvent::InitMutationEvent(const nsAString& aTypeArg, PRBool aCanBubbleArg, PRBool aCancelableArg, nsIDOMNode* aRelatedNodeArg, const nsAString& aPrevValueArg, const nsAString& aNewValueArg, const nsAString& aAttrNameArg, PRUint16 aAttrChangeArg)
00128 {
00129   nsresult rv = nsDOMEvent::InitEvent(aTypeArg, aCanBubbleArg, aCancelableArg);
00130   NS_ENSURE_SUCCESS(rv, rv);
00131   
00132   nsMutationEvent* mutation = NS_STATIC_CAST(nsMutationEvent*, mEvent);
00133   mutation->mRelatedNode = aRelatedNodeArg;
00134   if (!aPrevValueArg.IsEmpty())
00135     mutation->mPrevAttrValue = do_GetAtom(aPrevValueArg);
00136   if (!aNewValueArg.IsEmpty())
00137     mutation->mNewAttrValue = do_GetAtom(aNewValueArg);
00138   if (!aAttrNameArg.IsEmpty()) {
00139     mutation->mAttrName = do_GetAtom(aAttrNameArg);
00140   }
00141   mutation->mAttrChange = aAttrChangeArg;
00142     
00143   return NS_OK;
00144 }
00145 
00146 nsresult NS_NewDOMMutationEvent(nsIDOMEvent** aInstancePtrResult,
00147                                 nsPresContext* aPresContext,
00148                                 nsMutationEvent *aEvent) 
00149 {
00150   nsDOMMutationEvent* it = new nsDOMMutationEvent(aPresContext, aEvent);
00151   if (nsnull == it) {
00152     return NS_ERROR_OUT_OF_MEMORY;
00153   }
00154 
00155   return CallQueryInterface(it, aInstancePtrResult);
00156 }