widget/nsBaseClipboard.cpp
author Mike Hommey <mh+mozilla@glandium.org>
Tue, 04 Nov 2014 13:50:18 +0900
changeset 240257 6cd60e5f3d5272fc6c01a0c7b9388ae4f107a517
parent 238421 41c37790896e424e2743811d3d19be00068ce941
child 317945 c0be07690562d76bd836a24c817c015b1086f3a2
permissions -rw-r--r--
Bug 1091505 - Run subconfigures in parallel. r=gps On automation, this brings Windows configure time on a clobber from 5:30 to 3:10. Sadly, because make needs to run under intl/icu/host before configuring intl/icu/target, intl/icu/host needs to be configured independently. Fortunately, that's not configured for normal windows builds anyways. Also, having multiple subconfigures sharing the same cache file is dangerously racy. Fortunately, not a lot do. In fact, only js/src and $_subconfigure_subdir do, so force the latter (only used for ldap sdk on comm-central) not to configure in parallel.

/* -*- 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()
{
  mClipboardOwner          = nullptr;
  mTransferable            = nullptr;
  mIgnoreEmptyNotification = false;
  mEmptyingForSetData      = 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;
  if ( anOwner )
    NS_ADDREF(mClipboardOwner);

  mTransferable = aTransferable;
  
  nsresult rv = NS_ERROR_FAILURE;

  if ( mTransferable ) {
    NS_ADDREF(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);
    NS_RELEASE(mClipboardOwner);
  }

  NS_IF_RELEASE(mTransferable);

  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;
}