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