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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsBaseClipboard.h"
#include "nsIClipboardOwner.h"
#include "nsCOMPtr.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
nsBaseClipboard::nsBaseClipboard()
: mEmptyingForSetData(false)
, mIgnoreEmptyNotification(false)
{
}
nsBaseClipboard::~nsBaseClipboard()
{
EmptyClipboard(kSelectionClipboard);
EmptyClipboard(kGlobalClipboard);
EmptyClipboard(kFindClipboard);
}
NS_IMPL_ISUPPORTS(nsBaseClipboard, nsIClipboard)
/**
* Sets the transferable object
*
*/
NS_IMETHODIMP nsBaseClipboard::SetData(nsITransferable * aTransferable, nsIClipboardOwner * anOwner,
int32_t aWhichClipboard)
{
NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
if (aTransferable == mTransferable && anOwner == mClipboardOwner)
return NS_OK;
bool selectClipPresent;
SupportsSelectionClipboard(&selectClipPresent);
bool findClipPresent;
SupportsFindClipboard(&findClipPresent);
if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )
return NS_ERROR_FAILURE;
mEmptyingForSetData = true;
EmptyClipboard(aWhichClipboard);
mEmptyingForSetData = false;
mClipboardOwner = anOwner;
mTransferable = aTransferable;
nsresult rv = NS_ERROR_FAILURE;
if (mTransferable) {
rv = SetNativeClipboardData(aWhichClipboard);
}
return rv;
}
/**
* Gets the transferable object
*
*/
NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable * aTransferable, int32_t aWhichClipboard)
{
NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
bool selectClipPresent;
SupportsSelectionClipboard(&selectClipPresent);
bool findClipPresent;
SupportsFindClipboard(&findClipPresent);
if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )
return NS_ERROR_FAILURE;
if ( aTransferable )
return GetNativeClipboardData(aTransferable, aWhichClipboard);
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t aWhichClipboard)
{
bool selectClipPresent;
SupportsSelectionClipboard(&selectClipPresent);
bool findClipPresent;
SupportsFindClipboard(&findClipPresent);
if (!selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard)
return NS_ERROR_FAILURE;
if (mIgnoreEmptyNotification)
return NS_OK;
if (mClipboardOwner) {
mClipboardOwner->LosingOwnership(mTransferable);
mClipboardOwner = nullptr;
}
mTransferable = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsBaseClipboard::HasDataMatchingFlavors(const char** aFlavorList,
uint32_t aLength,
int32_t aWhichClipboard,
bool* outResult)
{
*outResult = true; // say we always do.
return NS_OK;
}
NS_IMETHODIMP
nsBaseClipboard::SupportsSelectionClipboard(bool* _retval)
{
*_retval = false; // we don't support the selection clipboard by default.
return NS_OK;
}
NS_IMETHODIMP
nsBaseClipboard::SupportsFindClipboard(bool* _retval)
{
*_retval = false; // we don't support the find clipboard by default.
return NS_OK;
}
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