/******************************************************************************
*
* Copyright (c) 2014 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer.
*
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* DropTransfer.h
*
*****************************************************************************/
#pragma once
#include <oz++/motif/View.h>
#include <oz++/motif/Transfer.h>
#include <Xm/DragDrop.h>
namespace OZ {
class DropTransfer :public CommonObject {
private:
Widget dropTransfer;
View* caller;
Args* args;
Action* transferAction;
static void commonTransferProc(Widget widget, XtPointer clientData,
Atom* seltype, Atom* type, XtPointer value,
unsigned long *length, int format)
{
Action* action = (Action*)clientData;
Transfer transfer(clientData, seltype, type,
value, length, format);
action -> call(transfer);
}
public:
DropTransfer(View* caller1, Args* args1)
{
args = new Args();
args -> copy(args1);
int num = (int)args->get(XmNnumDropTransfers);
XmDropTransferEntryRec* entry = new XmDropTransferEntryRec[num];
char* ptr1 = (char*)entry;
char* ptr2 = (char*)args->get(XmNdropTransfers);
memcpy(ptr1, ptr2, num*sizeof(XmDropTransferEntryRec));
args -> put(XmNdropTransfers, (XtArgVal)entry);
args -> set(XmNtransferProc,
(XtArgVal)&DropTransfer::commonTransferProc);
caller = caller1;
transferAction = NULL;
}
~DropTransfer()
{
if(transferAction) delete transferAction;
delete args;
}
void start(Widget dragContext)
{
dropTransfer = XmDropTransferStart(dragContext,
args->getArgList(),
args->count());
}
void cancel(Widget dragContext)
{
Args ar;
ar.set(XmNtransferStatus, XmTRANSFER_FAILURE);
ar.set(XmNtransferProc,
(XtArgVal)&DropTransfer::commonTransferProc);
XmDropTransferStart(dragContext,
ar.getArgList(), ar.count());
}
void registerTransferProc(CommonObject* callee,
Callback callback, XtPointer data)
{
if(!transferAction) {
transferAction = new Action(caller, callee, callback, data);
XmDropTransferEntryRec* entry =
(XmDropTransferEntryRec*)args->get(XmNdropTransfers);
int num = (int)args->get(XmNnumDropTransfers);
for(int i = 0; i<num; i++) {
if(entry)
entry[i].client_data = transferAction;
}
}
}
};
}