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/*********************************************************
* Copyright (C) 2010 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation version 2.1 and no later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/**
* @guestDnDDest.cc --
*
* Implementation of common layer GuestDnDDest object for guest.
*/
#include "guestDnD.hh"
#include "tracer.hh"
extern "C" {
#include "dndClipboard.h"
#include "debug.h"
}
/**
* Constructor.
*
* @param[in] mgr guest DnD manager
*/
GuestDnDDest::GuestDnDDest(GuestDnDMgr *mgr)
: mMgr(mgr)
{
ASSERT(mMgr);
mMgr->GetRpc()->destPrivDragEnterChanged.connect(
sigc::mem_fun(this, &GuestDnDDest::OnRpcPrivDragEnter));
mMgr->GetRpc()->destPrivDragLeaveChanged.connect(
sigc::mem_fun(this, &GuestDnDDest::OnRpcPrivDragLeave));
mMgr->GetRpc()->destPrivDropChanged.connect(
sigc::mem_fun(this, &GuestDnDDest::OnRpcPrivDrop));
mMgr->GetRpc()->destDropChanged.connect(
sigc::mem_fun(this, &GuestDnDDest::OnRpcDrop));
mMgr->GetRpc()->destCancelChanged.connect(
sigc::mem_fun(this, &GuestDnDDest::OnRpcCancel));
CPClipboard_Init(&mClipboard);
}
/**
* Destructor.
*/
GuestDnDDest::~GuestDnDDest(void)
{
CPClipboard_Destroy(&mClipboard);
}
/**
* Guest UI got dragEnter with valid data. Send dragEnter cmd to controller.
*
* @param[in] clip cross-platform clipboard data.
*/
void
GuestDnDDest::UIDragEnter(const CPClipboard *clip)
{
if (!mMgr->IsDragEnterAllowed()) {
g_debug("%s: not allowed.\n", __FUNCTION__);
return;
}
TRACE_CALL();
if (GUEST_DND_DEST_DRAGGING == mMgr->GetState() ||
GUEST_DND_PRIV_DRAGGING == mMgr->GetState()) {
/*
* In GH DnD case, if DnD already happened, user may drag back into guest
* VM and drag into the detection window again, and trigger the
* DragEnter. In this case, ignore the DragEnter.
*/
g_debug("%s: already in state %d for GH DnD, ignoring.\n", __FUNCTION__,
mMgr->GetState());
return;
}
if (GUEST_DND_SRC_DRAGGING == mMgr->GetState()) {
/*
* In HG DnD case, if DnD already happened, user may also drag into the
* detection window again. The DragEnter should also be ignored.
*/
g_debug("%s: already in SRC_DRAGGING state, ignoring\n", __FUNCTION__);
return;
}
/*
* In Unity mode, there is no QueryPendingDrag signal, so may get called
* with state READY.
*/
if (mMgr->GetState() != GUEST_DND_QUERY_EXITING &&
mMgr->GetState() != GUEST_DND_READY) {
g_debug("%s: Bad state: %d, reset\n", __FUNCTION__, mMgr->GetState());
goto error;
}
CPClipboard_Clear(&mClipboard);
CPClipboard_Copy(&mClipboard, clip);
if (!mMgr->GetRpc()->DestDragEnter(mMgr->GetSessionId(), clip)) {
g_debug("%s: DestDragEnter failed\n", __FUNCTION__);
goto error;
}
mMgr->SetState(GUEST_DND_DEST_DRAGGING);
g_debug("%s: state changed to DEST_DRAGGING\n", __FUNCTION__);
return;
error:
mMgr->ResetDnD();
}
/**
* User drags back to guest during GH DnD. Change state machine to
* PRIV_DRAGGING state.
*
* @param[in] sessionId active session id the controller assigned.
*/
void
GuestDnDDest::OnRpcPrivDragEnter(uint32 sessionId)
{
TRACE_CALL();
if (GUEST_DND_DEST_DRAGGING != mMgr->GetState()) {
g_debug("%s: Bad state: %d, reset\n", __FUNCTION__, mMgr->GetState());
goto error;
}
mMgr->SetState(GUEST_DND_PRIV_DRAGGING);
g_debug("%s: state changed to PRIV_DRAGGING\n", __FUNCTION__);
return;
error:
mMgr->ResetDnD();
}
/**
* User drags away from guest during GH DnD. Change state machine to
* SRC_DRAGGING state.
*
* @param[in] sessionId active session id the controller assigned.
* @param[in] x mouse position x.
* @param[in] y mouse position y.
*/
void
GuestDnDDest::OnRpcPrivDragLeave(uint32 sessionId,
int32 x,
int32 y)
{
TRACE_CALL();
if (GUEST_DND_PRIV_DRAGGING != mMgr->GetState()) {
g_debug("%s: Bad state: %d, reset\n", __FUNCTION__, mMgr->GetState());
goto error;
}
mMgr->SetState(GUEST_DND_DEST_DRAGGING);
mMgr->destMoveDetWndToMousePosChanged.emit();
g_debug("%s: state changed to DEST_DRAGGING\n", __FUNCTION__);
return;
error:
mMgr->ResetDnD();
}
/**
* User drops inside guest during GH DnD. Simulate the mouse drop, hide
* detection window, and reset state machine.
*
* @param[in] sessionId active session id the controller assigned.
* @param[in] x mouse position x.
* @param[in] y mouse position y.
*/
void
GuestDnDDest::OnRpcPrivDrop(uint32 sessionId,
int32 x,
int32 y)
{
mMgr->privDropChanged.emit(x, y);
mMgr->HideDetWnd();
mMgr->SetState(GUEST_DND_READY);
// XXX Trace.
g_debug("%s: state changed to GUEST_DND_READY, session id changed to 0\n",
__FUNCTION__);
}
/**
* User drops outside of guest during GH DnD. Simply cancel the local DnD.
*
* @param[in] sessionId active session id the controller assigned.
* @param[in] x mouse position x.
* @param[in] y mouse position y.
*/
void
GuestDnDDest::OnRpcDrop(uint32 sessionId,
int32 x,
int32 y)
{
OnRpcCancel(sessionId);
}
/**
* Cancel current GH DnD.
*
* @param[in] sessionId active session id the controller assigned.
*/
void
GuestDnDDest::OnRpcCancel(uint32 sessionId)
{
mMgr->DelayHideDetWnd();
mMgr->RemoveUngrabTimeout();
mMgr->destCancelChanged.emit();
mMgr->SetState(GUEST_DND_READY);
g_debug("%s: state changed to GUEST_DND_READY, session id changed to 0\n",
__FUNCTION__);
}
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