gecko-dev/xpcom/ds/nsSupportsArray.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsSupportsArray_h__
#define nsSupportsArray_h__
#include "nsISupportsArray.h"
static const PRUint32 kAutoArraySize = 4;
class NS_COM nsSupportsArray : public nsISupportsArray {
public:
nsSupportsArray(void);
virtual ~nsSupportsArray(void);
static NS_METHOD
Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
NS_DECL_ISUPPORTS
// nsICollection methods:
NS_IMETHOD Count(PRUint32 *result) { *result = mCount; return NS_OK; }
NS_IMETHOD GetElementAt(PRUint32 aIndex, nsISupports* *result) {
*result = ElementAt(aIndex);
return NS_OK;
}
NS_IMETHOD QueryElementAt(PRUint32 aIndex, const nsIID & aIID, void * *aResult) {
if (aIndex < mCount) {
nsISupports* element = mArray[aIndex];
if (nsnull != element)
return element->QueryInterface(aIID, aResult);
}
return NS_ERROR_FAILURE;
}
NS_IMETHOD SetElementAt(PRUint32 aIndex, nsISupports* value) {
PRBool ok = ReplaceElementAt(value, aIndex);
return ok ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHOD AppendElement(nsISupports *aElement) {
// XXX This incorrectly returns a PRBool instead of an nsresult.
return InsertElementAt(aElement, mCount);
}
NS_IMETHOD RemoveElement(nsISupports *aElement) {
// XXX This incorrectly returns a PRBool instead of an nsresult.
return RemoveElement(aElement, 0);
}
NS_IMETHOD Enumerate(nsIEnumerator* *result);
NS_IMETHOD Clear(void);
// nsISupportsArray methods:
NS_IMETHOD_(PRBool) Equals(const nsISupportsArray* aOther);
NS_IMETHOD_(nsISupports*) ElementAt(PRUint32 aIndex);
NS_IMETHOD_(PRInt32) IndexOf(const nsISupports* aPossibleElement);
NS_IMETHOD_(PRInt32) IndexOfStartingAt(const nsISupports* aPossibleElement,
PRUint32 aStartIndex = 0);
NS_IMETHOD_(PRInt32) LastIndexOf(const nsISupports* aPossibleElement);
NS_IMETHOD GetIndexOf(nsISupports *aPossibleElement, PRInt32 *_retval) {
*_retval = IndexOf(aPossibleElement);
return NS_OK;
}
NS_IMETHOD GetIndexOfStartingAt(nsISupports *aPossibleElement,
PRUint32 aStartIndex, PRInt32 *_retval) {
*_retval = IndexOfStartingAt(aPossibleElement, aStartIndex);
return NS_OK;
}
NS_IMETHOD GetLastIndexOf(nsISupports *aPossibleElement, PRInt32 *_retval) {
*_retval = LastIndexOf(aPossibleElement);
return NS_OK;
}
NS_IMETHOD_(PRBool) InsertElementAt(nsISupports* aElement, PRUint32 aIndex);
NS_IMETHOD_(PRBool) ReplaceElementAt(nsISupports* aElement, PRUint32 aIndex);
NS_IMETHOD_(PRBool) RemoveElementAt(PRUint32 aIndex);
NS_IMETHOD_(PRBool) RemoveElement(const nsISupports* aElement, PRUint32 aStartIndex = 0);
NS_IMETHOD_(PRBool) RemoveLastElement(const nsISupports* aElement);
NS_IMETHOD DeleteLastElement(nsISupports *aElement) {
return (RemoveLastElement(aElement) ? NS_OK : NS_ERROR_FAILURE);
}
NS_IMETHOD DeleteElementAt(PRUint32 aIndex) {
return (RemoveElementAt(aIndex) ? NS_OK : NS_ERROR_FAILURE);
}
NS_IMETHOD_(PRBool) AppendElements(nsISupportsArray* aElements);
NS_IMETHOD Compact(void);
NS_IMETHOD_(PRBool) EnumerateForwards(nsISupportsArrayEnumFunc aFunc, void* aData);
NS_IMETHOD_(PRBool) EnumerateBackwards(nsISupportsArrayEnumFunc aFunc, void* aData);
NS_IMETHOD Clone(nsISupportsArray **_retval);
protected:
NS_IMETHOD_(nsISupportsArray&) operator=(const nsISupportsArray& aOther);
NS_IMETHOD_(PRBool) operator==(const nsISupportsArray& aOther) { return Equals(&aOther); }
NS_IMETHOD_(nsISupports*) operator[](PRUint32 aIndex) { return ElementAt(aIndex); }
void DeleteArray(void);
nsISupports** mArray;
PRUint32 mArraySize;
PRUint32 mCount;
nsISupports* mAutoArray[kAutoArraySize];
private:
// Copy constructors are not allowed
nsSupportsArray(const nsISupportsArray& other);
};
#endif // nsSupportsArray_h__