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widget/xpwidgets/nsBaseClipboard.cpp@44a2da4a2ab2 (annotated)

widget/xpwidgets/nsBaseClipboard.cpp

Fri, 16 Jan 2015 04:50:19 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Fri, 16 Jan 2015 04:50:19 +0100

branch

TOR_BUG_9701

changeset 13

44a2da4a2ab2

permissions

-rw-r--r--

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5
michael@0	6	#include "nsBaseClipboard.h"
michael@0	7
michael@0	8	#include "nsIClipboardOwner.h"
michael@0	9	#include "nsCOMPtr.h"
michael@0	10	#include "nsXPCOM.h"
michael@0	11	#include "nsISupportsPrimitives.h"
michael@0	12
michael@0	13	nsBaseClipboard::nsBaseClipboard()
michael@0	14	{
michael@0	15	mClipboardOwner = nullptr;
michael@0	16	mTransferable = nullptr;
michael@0	17	mIgnoreEmptyNotification = false;
michael@0	18	mEmptyingForSetData = false;
michael@0	19	}
michael@0	20
michael@0	21	nsBaseClipboard::~nsBaseClipboard()
michael@0	22	{
michael@0	23	EmptyClipboard(kSelectionClipboard);
michael@0	24	EmptyClipboard(kGlobalClipboard);
michael@0	25	EmptyClipboard(kFindClipboard);
michael@0	26	}
michael@0	27
michael@0	28	NS_IMPL_ISUPPORTS(nsBaseClipboard, nsIClipboard)
michael@0	29
michael@0	30	/**
michael@0	31	* Sets the transferable object
michael@0	32	*
michael@0	33	*/
michael@0	34	NS_IMETHODIMP nsBaseClipboard::SetData(nsITransferable * aTransferable, nsIClipboardOwner * anOwner,
michael@0	35	int32_t aWhichClipboard)
michael@0	36	{
michael@0	37	NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
michael@0	38
michael@0	39	if (aTransferable == mTransferable && anOwner == mClipboardOwner)
michael@0	40	return NS_OK;
michael@0	41	bool selectClipPresent;
michael@0	42	SupportsSelectionClipboard(&selectClipPresent);
michael@0	43	bool findClipPresent;
michael@0	44	SupportsFindClipboard(&findClipPresent);
michael@0	45	if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )
michael@0	46	return NS_ERROR_FAILURE;
michael@0	47
michael@0	48	mEmptyingForSetData = true;
michael@0	49	EmptyClipboard(aWhichClipboard);
michael@0	50	mEmptyingForSetData = false;
michael@0	51
michael@0	52	mClipboardOwner = anOwner;
michael@0	53	if ( anOwner )
michael@0	54	NS_ADDREF(mClipboardOwner);
michael@0	55
michael@0	56	mTransferable = aTransferable;
michael@0	57
michael@0	58	nsresult rv = NS_ERROR_FAILURE;
michael@0	59
michael@0	60	if ( mTransferable ) {
michael@0	61	NS_ADDREF(mTransferable);
michael@0	62	if (!mPrivacyHandler) {
michael@0	63	rv = NS_NewClipboardPrivacyHandler(getter_AddRefs(mPrivacyHandler));
michael@0	64	NS_ENSURE_SUCCESS(rv, rv);
michael@0	65	}
michael@0	66	rv = mPrivacyHandler->PrepareDataForClipboard(mTransferable);
michael@0	67	NS_ENSURE_SUCCESS(rv, rv);
michael@0	68	rv = SetNativeClipboardData(aWhichClipboard);
michael@0	69	}
michael@0	70
michael@0	71	return rv;
michael@0	72	}
michael@0	73
michael@0	74	/**
michael@0	75	* Gets the transferable object
michael@0	76	*
michael@0	77	*/
michael@0	78	NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable * aTransferable, int32_t aWhichClipboard)
michael@0	79	{
michael@0	80	NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
michael@0	81
michael@0	82	bool selectClipPresent;
michael@0	83	SupportsSelectionClipboard(&selectClipPresent);
michael@0	84	bool findClipPresent;
michael@0	85	SupportsFindClipboard(&findClipPresent);
michael@0	86	if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )
michael@0	87	return NS_ERROR_FAILURE;
michael@0	88
michael@0	89	if ( aTransferable )
michael@0	90	return GetNativeClipboardData(aTransferable, aWhichClipboard);
michael@0	91
michael@0	92	return NS_ERROR_FAILURE;
michael@0	93	}
michael@0	94
michael@0	95	NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(int32_t aWhichClipboard)
michael@0	96	{
michael@0	97	bool selectClipPresent;
michael@0	98	SupportsSelectionClipboard(&selectClipPresent);
michael@0	99	bool findClipPresent;
michael@0	100	SupportsFindClipboard(&findClipPresent);
michael@0	101	if ( !selectClipPresent && !findClipPresent && aWhichClipboard != kGlobalClipboard )
michael@0	102	return NS_ERROR_FAILURE;
michael@0	103
michael@0	104	if (mIgnoreEmptyNotification)
michael@0	105	return NS_OK;
michael@0	106
michael@0	107	if ( mClipboardOwner ) {
michael@0	108	mClipboardOwner->LosingOwnership(mTransferable);
michael@0	109	NS_RELEASE(mClipboardOwner);
michael@0	110	}
michael@0	111
michael@0	112	NS_IF_RELEASE(mTransferable);
michael@0	113
michael@0	114	return NS_OK;
michael@0	115	}
michael@0	116
michael@0	117	NS_IMETHODIMP
michael@0	118	nsBaseClipboard::HasDataMatchingFlavors(const char** aFlavorList,
michael@0	119	uint32_t aLength,
michael@0	120	int32_t aWhichClipboard,
michael@0	121	bool* outResult)
michael@0	122	{
michael@0	123	*outResult = true; // say we always do.
michael@0	124	return NS_OK;
michael@0	125	}
michael@0	126
michael@0	127	NS_IMETHODIMP
michael@0	128	nsBaseClipboard::SupportsSelectionClipboard(bool* _retval)
michael@0	129	{
michael@0	130	*_retval = false; // we don't support the selection clipboard by default.
michael@0	131	return NS_OK;
michael@0	132	}
michael@0	133
michael@0	134	NS_IMETHODIMP
michael@0	135	nsBaseClipboard::SupportsFindClipboard(bool* _retval)
michael@0	136	{
michael@0	137	*_retval = false; // we don't support the find clipboard by default.
michael@0	138	return NS_OK;
michael@0	139	}