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lightning-sunbird  0.9+nobinonly
Public Member Functions | Private Attributes
DirectoryEnumerator Class Reference
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List of all members.

Public Member Functions

NS_DECL_ISUPPORTS DirectoryEnumerator (jobjectArray aJavaFileArray)
 ~DirectoryEnumerator ()
NS_IMETHOD HasMoreElements (PRBool *aResult)
NS_IMETHOD GetNext (nsISupports **aResult)
boolean hasMoreElements ()
 Called to determine whether or not the enumerator has any elements that can be returned via getNext().
nsISupports getNext ()
 Called to retrieve the next element in the enumerator.

Private Attributes

jobjectArray mJavaFileArray
PRUint32 mArraySize
PRUint32 mIndex

Detailed Description

Definition at line 106 of file nsAppFileLocProviderProxy.cpp.


Constructor & Destructor Documentation

Definition at line 111 of file nsAppFileLocProviderProxy.cpp.

    : mIndex(0)
  {
    JNIEnv* env = GetJNIEnv();
    mJavaFileArray = NS_STATIC_CAST(jobjectArray,
                                    env->NewGlobalRef(aJavaFileArray));
    mArraySize = env->GetArrayLength(aJavaFileArray);
  }

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Definition at line 120 of file nsAppFileLocProviderProxy.cpp.

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Member Function Documentation

nsISupports nsISimpleEnumerator::getNext ( ) [inherited]

Called to retrieve the next element in the enumerator.

The "next" element is the first element upon the first call. Must be pre-ceeded by a call to hasMoreElements() which returns PR_TRUE. This method is generally called within a loop to iterate over the elements in the enumerator.

See also:
hasMoreElements()
Returns:
NS_OK if the call succeeded in returning a non-null value through the out parameter. NS_ERROR_FAILURE if there are no more elements to enumerate.
the next element in the enumeration.

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NS_IMETHOD DirectoryEnumerator::GetNext ( nsISupports **  aResult) [inline]

Definition at line 135 of file nsAppFileLocProviderProxy.cpp.

  {
    nsresult rv = NS_ERROR_FAILURE;

    JNIEnv* env = GetJNIEnv();
    jobject javaFile = env->GetObjectArrayElement(mJavaFileArray, mIndex++);
    if (javaFile) {
      nsCOMPtr<nsILocalFile> localFile;
      rv = File_to_nsILocalFile(env, javaFile, getter_AddRefs(localFile));
      env->DeleteLocalRef(javaFile);

      if (NS_SUCCEEDED(rv)) {
        return localFile->QueryInterface(NS_GET_IID(nsIFile), (void**)aResult);
      }
    }

    env->ExceptionClear();
    return NS_ERROR_FAILURE;
  }

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Called to determine whether or not the enumerator has any elements that can be returned via getNext().

This method is generally used to determine whether or not to initiate or continue iteration over the enumerator, though it can be called without subsequent getNext() calls. Does not affect internal state of enumerator.

See also:
getNext()
Returns:
PR_TRUE if there are remaining elements in the enumerator. PR_FALSE if there are no more elements in the enumerator.

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Definition at line 125 of file nsAppFileLocProviderProxy.cpp.

  {
    if (!mJavaFileArray) {
      *aResult = PR_FALSE;
    } else {
      *aResult = (mIndex < mArraySize);
    }
    return NS_OK;
  }

Member Data Documentation

Definition at line 157 of file nsAppFileLocProviderProxy.cpp.

Definition at line 158 of file nsAppFileLocProviderProxy.cpp.

Definition at line 156 of file nsAppFileLocProviderProxy.cpp.


The documentation for this class was generated from the following file: