gecko-dev/lib/libmsg/msglpane.h

77 lines
2.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef _MsgLPane_H_
#define _MsgLPane_H_
#include "msgpane.h"
typedef struct MSG_LinedPaneStack MSG_LinedPaneStack;
class MSG_LinedPane : public MSG_Pane {
public:
MSG_LinedPane(MWContext* context, MSG_Master* master);
virtual ~MSG_LinedPane();
virtual XP_Bool IsLinePane();
virtual void ToggleExpansion(MSG_ViewIndex line, int32* numchanged) = 0;
virtual int32 ExpansionDelta(MSG_ViewIndex line) = 0;
virtual int32 GetNumLines() = 0;
virtual void StartingUpdate(MSG_NOTIFY_CODE code, MSG_ViewIndex where,
int32 num);
virtual void EndingUpdate(MSG_NOTIFY_CODE code, MSG_ViewIndex where,
int32 num);
virtual void OnFolderChanged(MSG_FolderInfo *);
virtual XP_Bool IsValidIndex(MSG_ViewIndex index);
protected:
virtual void FEStart() { // Starting a call from the FE.
m_fecount++;
}
virtual void FEEnd() { // Finished a call from the FE.
m_fecount--;
XP_ASSERT(m_fecount >= 0);
}
virtual void DisableUpdate(); // Don't actually do anything when calling
// StartingUpdate() and EndingUpdate().
virtual void EnableUpdate(); // OK; StartingUpdate() and EndingUpdate()
// can do things again.
MSG_LinedPaneStack* m_stack;// Used only when DEBUG is on; helps check
// that calls to StartingUpdate and
// EndingUpdate match up correctly.
// m_numstack is now in the base class because we use it to know if we're nested
int m_maxstack;
int m_fecount; // How many calls we've had to FEStart()
// without a matching call to FEEnd().
int m_disablecount; // How many calls we've had to DisableUpdate()
// without a matching call to EnableUpdate().
};
#endif /* _MsgLPane_H_ */