content/events/src/nsDOMTextEvent.cpp

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  24  *   Ilya Konstantinov (mozilla-code@future.shiny.co.il)
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  39
  40 #include "nsDOMTextEvent.h"
  41 #include "nsContentUtils.h"
  42 #include "nsPrivateTextRange.h"
  43
  44 nsDOMTextEvent::nsDOMTextEvent(nsPresContext* aPresContext,
  45                                nsTextEvent* aEvent)
  46   : nsDOMUIEvent(aPresContext, aEvent ? aEvent :
  47                  new nsTextEvent(PR_FALSE, 0, nsnull))
  48 {
  49   NS_ASSERTION(mEvent->eventStructType == NS_TEXT_EVENT, "event type mismatch");
  50
  51   if (aEvent) {
  52     mEventIsInternal = PR_FALSE;
  53   }
  54   else {
  55     mEventIsInternal = PR_TRUE;
  56     mEvent->time = PR_Now();
  57   }
  58
  59   //
  60   // extract the IME composition string
  61   //
  62   nsTextEvent *te = static_cast<nsTextEvent*>(mEvent);
  63   mText = te->theText;
  64
  65   //
  66   // build the range list -- ranges need to be DOM-ified since the
  67   // IME transaction will hold a ref, the widget representation
  68   // isn't persistent
  69   //
  70   mTextRange = new nsPrivateTextRangeList(te->rangeCount);
  71   if (mTextRange) {
  72     PRUint16 i;
  73
  74     for(i = 0; i < te->rangeCount; i++) {
  75       nsRefPtr<nsPrivateTextRange> tempPrivateTextRange = new
  76         nsPrivateTextRange(te->rangeArray[i]);
  77
  78       if (tempPrivateTextRange) {
  79         mTextRange->AppendTextRange(tempPrivateTextRange);
  80       }
  81     }
  82   }
  83 }
  84
  85 NS_IMPL_ADDREF_INHERITED(nsDOMTextEvent, nsDOMUIEvent)
  86 NS_IMPL_RELEASE_INHERITED(nsDOMTextEvent, nsDOMUIEvent)
  87
  88 NS_INTERFACE_MAP_BEGIN(nsDOMTextEvent)
  89   NS_INTERFACE_MAP_ENTRY(nsIPrivateTextEvent)
  90 NS_INTERFACE_MAP_END_INHERITING(nsDOMUIEvent)
  91
  92 NS_METHOD nsDOMTextEvent::GetText(nsString& aText)
  93 {
  94   aText = mText;
  95   return NS_OK;
  96 }
  97
  98 NS_METHOD_(already_AddRefed<nsIPrivateTextRangeList>) nsDOMTextEvent::GetInputRange()
  99 {
 100   if (mEvent->message == NS_TEXT_TEXT) {
 101     nsRefPtr<nsPrivateTextRangeList> textRange = mTextRange;
 102     nsPrivateTextRangeList *textRangePtr = nsnull;
 103     textRange.swap(textRangePtr);
 104     return textRangePtr;
 105   }
 106   return nsnull;
 107 }
 108
 109 nsresult NS_NewDOMTextEvent(nsIDOMEvent** aInstancePtrResult,
 110                             nsPresContext* aPresContext,
 111                             nsTextEvent *aEvent)
 112 {
 113   nsDOMTextEvent* it = new nsDOMTextEvent(aPresContext, aEvent);
 114   if (nsnull == it) {
 115     return NS_ERROR_OUT_OF_MEMORY;
 116   }
 117
 118   return CallQueryInterface(it, aInstancePtrResult);
 119 }