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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef SD_OUTPUT_DEVICE_UPDATER_HXX
#define SD_OUTPUT_DEVICE_UPDATER_HXX
#include <svl/lstner.hxx>
#include <svl/ctloptions.hxx>
#include "sddllapi.h"
#ifndef INCLUDED_VECTOR
#include <vector>
#define INCLUDED_VECTOR
#endif
class Window;
class OutputDevice;
class SdDrawDocument;
namespace sd {
class ViewShell;
/** The purpose of the <type>WindowUpdater</type> is to update output
devices to take care of modified global values. These values are
monitored for changes. At the moment this is
the digit language that defines the glyphs to use to render digits.
Other values may be added in the future.
<p>The methods of this class have not been included into the
<type>ViewShell</type> class in order to not clutter its interface any
further. This class accesses some of <type>ViewShell</type> data
members directly and thus is declared as its friend.</p>
<p>Windows that are to be kept up-to-date have to be registered via the
<member>RegisterWindow()</member> method. When a document is given then
this document is reformatted when the monitored option changes.</p>
*/
class SD_DLLPUBLIC WindowUpdater
: public utl::ConfigurationListener
{
public:
explicit WindowUpdater (void);
virtual ~WindowUpdater (void) throw();
/** Add the given device to the list of devices which will be updated
when one of the monitored values changes.
@param pWindow
This device is added to the device list if it is not <null/> and
when it is not already a member of that list.
*/
void RegisterWindow (::Window* pWindow);
/** Remove the given device from the list of devices which will be updated
when one of the monitored values changes.
@param pWindow
This device is removed from the device list when it is a member
of that list.
*/
void UnregisterWindow (::Window* pWindow);
/** Set the view shell whose output devices shall be kept up to date.
It is used to clear the master page cache so that a redraw affects
the master page content as well.
*/
void SetViewShell (ViewShell& rViewShell);
/** Set the document so that it is reformatted when one of the monitored
values changes.
@param pDocument
When <null/> is given document reformatting will not take
place in the future.
*/
void SetDocument (SdDrawDocument* pDocument);
/** Update the given output device and update all text objects of the
view shell if not told otherwise.
@param pWindow
The device to update. When the given pointer is NULL then
nothing is done.
@param pDocument
When given a pointer to a document then tell it to reformat all
text objects. This refromatting is necessary for the new values
to take effect.
*/
void Update (OutputDevice* pDevice, SdDrawDocument* pDocument=0) const;
/** Callback that waits for notifications of a
<type>SvtCTLOptions</type> object.
*/
virtual void ConfigurationChanged ( utl::ConfigurationBroadcaster*, sal_uInt32 nHint);
private:
/// Options to monitor for changes.
SvtCTLOptions maCTLOptions;
/// Keep the output devices of this view shell up to date.
ViewShell* mpViewShell;
/// The document rendered in the output devices.
SdDrawDocument* mpDocument;
/// Copy constructor not supported.
WindowUpdater (const WindowUpdater& rUpdater);
/// Assignment operator not supported.
WindowUpdater operator= (const WindowUpdater& rUpdater);
/** Type and data member for a list of devices that have to be kept
up-to-date.
*/
typedef ::std::vector< ::Window*> tWindowList;
tWindowList maWindowList;
/** The central method of this class. Update the given output device.
It is the task of the caller to initiate a refrormatting of the
document that is rendered on this device to reflect the changes.
@param pWindow
The output device to update. When it is <null/> then the call
is ignored.
*/
SD_DLLPRIVATE void UpdateWindow (OutputDevice* pDevice) const;
};
} // end of namespace sd
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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