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|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#include <svtools/wizardmachine.hxx>
#include <svtools/helpid.hrc>
#include <tools/debug.hxx>
#include <tools/diagnose_ex.h>
#include <vcl/msgbox.hxx>
#include <svtools/svtresid.hxx>
#include <svtools/svtools.hrc>
namespace svt
{
//= WizardPageImplData
struct WizardPageImplData
{
WizardPageImplData()
{
}
};
OWizardPage::OWizardPage(vcl::Window *pParent, const OString& rID,
const OUString& rUIXMLDescription)
: TabPage(pParent, rID, rUIXMLDescription)
, m_pImpl(new WizardPageImplData)
{
}
OWizardPage::~OWizardPage()
{
disposeOnce();
}
void OWizardPage::dispose()
{
delete m_pImpl;
TabPage::dispose();
}
void OWizardPage::initializePage()
{
}
void OWizardPage::ActivatePage()
{
TabPage::ActivatePage();
updateDialogTravelUI();
}
void OWizardPage::updateDialogTravelUI()
{
OWizardMachine* pWizardMachine = dynamic_cast< OWizardMachine* >( GetParent() );
if ( pWizardMachine )
pWizardMachine->updateTravelUI();
}
bool OWizardPage::canAdvance() const
{
return true;
}
bool OWizardPage::commitPage( WizardTypes::CommitPageReason )
{
return true;
}
struct WizardMachineImplData : public WizardTypes
{
OUString sTitleBase; // the base for the title
::std::stack< WizardState > aStateHistory; // the history of all states (used for implementing "Back")
WizardState nFirstUnknownPage;
// the WizardDialog does not allow non-linear transitions (e.g. it's
// not possible to add pages in a non-linear order), so we need some own maintenance data
bool m_bAutoNextButtonState;
bool m_bTravelingSuspended;
WizardMachineImplData()
:nFirstUnknownPage( 0 )
,m_bAutoNextButtonState( false )
,m_bTravelingSuspended( false )
{
}
};
OWizardMachine::OWizardMachine(vcl::Window* _pParent, const WinBits i_nStyle, sal_uInt32 _nButtonFlags )
:WizardDialog( _pParent, i_nStyle )
,m_pFinish(NULL)
,m_pCancel(NULL)
,m_pNextPage(NULL)
,m_pPrevPage(NULL)
,m_pHelp(NULL)
,m_pImpl( new WizardMachineImplData )
{
implConstruct( _nButtonFlags );
}
OWizardMachine::OWizardMachine(vcl::Window* _pParent, sal_uInt32 _nButtonFlags )
:WizardDialog( _pParent, "WizardDialog", "svt/ui/wizarddialog.ui" )
,m_pFinish(NULL)
,m_pCancel(NULL)
,m_pNextPage(NULL)
,m_pPrevPage(NULL)
,m_pHelp(NULL)
,m_pImpl( new WizardMachineImplData )
{
implConstruct( _nButtonFlags );
}
void OWizardMachine::implConstruct( const sal_uInt32 _nButtonFlags )
{
m_pImpl->sTitleBase = GetText();
// create the buttons according to the wizard button flags
// the help button
if (_nButtonFlags & WZB_HELP)
{
m_pHelp= new HelpButton(this, WB_TABSTOP);
m_pHelp->SetSizePixel( LogicToPixel( Size( 50, 14 ), MAP_APPFONT ) );
m_pHelp->Show();
AddButton( m_pHelp, WIZARDDIALOG_BUTTON_STDOFFSET_X);
}
// the previous button
if (_nButtonFlags & WZB_PREVIOUS)
{
m_pPrevPage = new PushButton(this, WB_TABSTOP);
m_pPrevPage->SetHelpId( HID_WIZARD_PREVIOUS );
m_pPrevPage->SetSizePixel( LogicToPixel( Size( 50, 14 ), MAP_APPFONT ) );
m_pPrevPage->SetText(SVT_RESSTR(STR_WIZDLG_PREVIOUS));
m_pPrevPage->Show();
if (_nButtonFlags & WZB_NEXT)
AddButton( m_pPrevPage, ( WIZARDDIALOG_BUTTON_SMALLSTDOFFSET_X) ); // half x-offset to the next button
else
AddButton( m_pPrevPage, WIZARDDIALOG_BUTTON_STDOFFSET_X );
SetPrevButton( m_pPrevPage );
m_pPrevPage->SetClickHdl( LINK( this, OWizardMachine, OnPrevPage ) );
}
// the next button
if (_nButtonFlags & WZB_NEXT)
{
m_pNextPage = new PushButton(this, WB_TABSTOP);
m_pNextPage->SetHelpId( HID_WIZARD_NEXT );
m_pNextPage->SetSizePixel( LogicToPixel( Size( 50, 14 ), MAP_APPFONT ) );
m_pNextPage->SetText(OUString(SVT_RESSTR(STR_WIZDLG_NEXT)));
m_pNextPage->Show();
AddButton( m_pNextPage, WIZARDDIALOG_BUTTON_STDOFFSET_X );
SetNextButton( m_pNextPage );
m_pNextPage->SetClickHdl( LINK( this, OWizardMachine, OnNextPage ) );
}
// the finish button
if (_nButtonFlags & WZB_FINISH)
{
m_pFinish = new OKButton(this, WB_TABSTOP);
m_pFinish->SetSizePixel( LogicToPixel( Size( 50, 14 ), MAP_APPFONT ) );
m_pFinish->SetText(SVT_RESSTR(STR_WIZDLG_FINISH));
m_pFinish->Show();
AddButton( m_pFinish, WIZARDDIALOG_BUTTON_STDOFFSET_X );
m_pFinish->SetClickHdl( LINK( this, OWizardMachine, OnFinish ) );
}
// the cancel button
if (_nButtonFlags & WZB_CANCEL)
{
m_pCancel = new CancelButton(this, WB_TABSTOP);
m_pCancel->SetSizePixel( LogicToPixel( Size( 50, 14 ), MAP_APPFONT ) );
m_pCancel->Show();
AddButton( m_pCancel, WIZARDDIALOG_BUTTON_STDOFFSET_X );
}
}
OWizardMachine::~OWizardMachine()
{
disposeOnce();
}
void OWizardMachine::dispose()
{
m_pFinish.disposeAndClear();
m_pCancel.disposeAndClear();
m_pNextPage.disposeAndClear();
m_pPrevPage.disposeAndClear();
m_pHelp.disposeAndClear();
for (WizardState i=0; i<m_pImpl->nFirstUnknownPage; ++i)
GetPage(i)->disposeOnce();
delete m_pImpl;
WizardDialog::dispose();
}
void OWizardMachine::implUpdateTitle()
{
OUString sCompleteTitle(m_pImpl->sTitleBase);
// append the page title
TabPage* pCurrentPage = GetPage(getCurrentState());
if ( pCurrentPage && !pCurrentPage->GetText().isEmpty() )
{
sCompleteTitle += (" - " + pCurrentPage->GetText());
}
SetText(sCompleteTitle);
}
void OWizardMachine::setTitleBase(const OUString& _rTitleBase)
{
m_pImpl->sTitleBase = _rTitleBase;
implUpdateTitle();
}
TabPage* OWizardMachine::GetOrCreatePage( const WizardState i_nState )
{
if ( NULL == GetPage( i_nState ) )
{
TabPage* pNewPage = createPage( i_nState );
DBG_ASSERT( pNewPage, "OWizardMachine::GetOrCreatePage: invalid new page (NULL)!" );
// fill up the page sequence of our base class (with dummies)
while ( m_pImpl->nFirstUnknownPage < i_nState )
{
AddPage( NULL );
++m_pImpl->nFirstUnknownPage;
}
if ( m_pImpl->nFirstUnknownPage == i_nState )
{
// encountered this page number the first time
AddPage( pNewPage );
++m_pImpl->nFirstUnknownPage;
}
else
// already had this page - just change it
SetPage( i_nState, pNewPage );
}
return GetPage( i_nState );
}
void OWizardMachine::ActivatePage()
{
WizardDialog::ActivatePage();
WizardState nCurrentLevel = GetCurLevel();
GetOrCreatePage( nCurrentLevel );
enterState( nCurrentLevel );
}
long OWizardMachine::DeactivatePage()
{
WizardState nCurrentState = getCurrentState();
if (!leaveState(nCurrentState) || !WizardDialog::DeactivatePage())
return sal_False;
return sal_True;
}
void OWizardMachine::defaultButton(sal_uInt32 _nWizardButtonFlags)
{
// the new default button
PushButton* pNewDefButton = NULL;
if (m_pFinish && (_nWizardButtonFlags & WZB_FINISH))
pNewDefButton = m_pFinish;
if (m_pNextPage && (_nWizardButtonFlags & WZB_NEXT))
pNewDefButton = m_pNextPage;
if (m_pPrevPage && (_nWizardButtonFlags & WZB_PREVIOUS))
pNewDefButton = m_pPrevPage;
if (m_pHelp && (_nWizardButtonFlags & WZB_HELP))
pNewDefButton = m_pHelp;
if (m_pCancel && (_nWizardButtonFlags & WZB_CANCEL))
pNewDefButton = m_pCancel;
if ( pNewDefButton )
defaultButton( pNewDefButton );
else
implResetDefault( this );
}
void OWizardMachine::implResetDefault(vcl::Window* _pWindow)
{
vcl::Window* pChildLoop = _pWindow->GetWindow(WINDOW_FIRSTCHILD);
while (pChildLoop)
{
// does the window participate in the tabbing order?
if (pChildLoop->GetStyle() & WB_DIALOGCONTROL)
implResetDefault(pChildLoop);
// is it a button?
WindowType eType = pChildLoop->GetType();
if ( (WINDOW_BUTTON == eType)
|| (WINDOW_PUSHBUTTON == eType)
|| (WINDOW_OKBUTTON == eType)
|| (WINDOW_CANCELBUTTON == eType)
|| (WINDOW_HELPBUTTON == eType)
|| (WINDOW_IMAGEBUTTON == eType)
|| (WINDOW_MENUBUTTON == eType)
|| (WINDOW_MOREBUTTON == eType)
)
{
pChildLoop->SetStyle(pChildLoop->GetStyle() & ~WB_DEFBUTTON);
}
// the next one ...
pChildLoop = pChildLoop->GetWindow(WINDOW_NEXT);
}
}
void OWizardMachine::defaultButton(PushButton* _pNewDefButton)
{
// loop through all (direct and indirect) descendants which participate in our tabbing order, and
// reset the WB_DEFBUTTON for every window which is a button
implResetDefault(this);
// set it's new style
if (_pNewDefButton)
_pNewDefButton->SetStyle(_pNewDefButton->GetStyle() | WB_DEFBUTTON);
}
void OWizardMachine::enableButtons(sal_uInt32 _nWizardButtonFlags, bool _bEnable)
{
if (m_pFinish && (_nWizardButtonFlags & WZB_FINISH))
m_pFinish->Enable(_bEnable);
if (m_pNextPage && (_nWizardButtonFlags & WZB_NEXT))
m_pNextPage->Enable(_bEnable);
if (m_pPrevPage && (_nWizardButtonFlags & WZB_PREVIOUS))
m_pPrevPage->Enable(_bEnable);
if (m_pHelp && (_nWizardButtonFlags & WZB_HELP))
m_pHelp->Enable(_bEnable);
if (m_pCancel && (_nWizardButtonFlags & WZB_CANCEL))
m_pCancel->Enable(_bEnable);
}
void OWizardMachine::enterState(WizardState _nState)
{
// tell the page
IWizardPageController* pController = getPageController( GetPage( _nState ) );
OSL_ENSURE( pController, "OWizardMachine::enterState: no controller for the given page!" );
if ( pController )
pController->initializePage();
if ( isAutomaticNextButtonStateEnabled() )
enableButtons( WZB_NEXT, canAdvance() );
enableButtons( WZB_PREVIOUS, !m_pImpl->aStateHistory.empty() );
// set the new title - it depends on the current page (i.e. state)
implUpdateTitle();
}
bool OWizardMachine::leaveState(WizardState)
{
// no need to ask the page here.
// If we reach this point, we already gave the current page the chance to commit it's data,
// and it was allowed to commit it's data
return true;
}
bool OWizardMachine::onFinish()
{
return Finish( RET_OK );
}
IMPL_LINK_NOARG(OWizardMachine, OnFinish)
{
if ( isTravelingSuspended() )
return 0;
WizardTravelSuspension aTravelGuard( *this );
if ( !prepareLeaveCurrentState( eFinish ) )
{
return 0L;
}
return onFinish() ? 1L : 0L;
}
OWizardMachine::WizardState OWizardMachine::determineNextState( WizardState _nCurrentState ) const
{
return _nCurrentState + 1;
}
bool OWizardMachine::prepareLeaveCurrentState( CommitPageReason _eReason )
{
IWizardPageController* pController = getPageController( GetPage( getCurrentState() ) );
ENSURE_OR_RETURN( pController != NULL, "OWizardMachine::prepareLeaveCurrentState: no controller for the current page!", true );
return pController->commitPage( _eReason );
}
bool OWizardMachine::skipBackwardUntil( WizardState _nTargetState )
{
// allowed to leave the current page?
if ( !prepareLeaveCurrentState( eTravelBackward ) )
return false;
// don't travel directly on m_pImpl->aStateHistory, in case something goes wrong
::std::stack< WizardState > aTravelVirtually = m_pImpl->aStateHistory;
::std::stack< WizardState > aOldStateHistory = m_pImpl->aStateHistory;
WizardState nCurrentRollbackState = getCurrentState();
while ( nCurrentRollbackState != _nTargetState )
{
DBG_ASSERT( !aTravelVirtually.empty(), "OWizardMachine::skipBackwardUntil: this target state does not exist in the history!" );
nCurrentRollbackState = aTravelVirtually.top();
aTravelVirtually.pop();
}
m_pImpl->aStateHistory = aTravelVirtually;
if ( !ShowPage( _nTargetState ) )
{
m_pImpl->aStateHistory = aOldStateHistory;
return false;
}
return true;
}
bool OWizardMachine::skipUntil( WizardState _nTargetState )
{
WizardState nCurrentState = getCurrentState();
// allowed to leave the current page?
if ( !prepareLeaveCurrentState( nCurrentState < _nTargetState ? eTravelForward : eTravelBackward ) )
return false;
// don't travel directly on m_pImpl->aStateHistory, in case something goes wrong
::std::stack< WizardState > aTravelVirtually = m_pImpl->aStateHistory;
::std::stack< WizardState > aOldStateHistory = m_pImpl->aStateHistory;
while ( nCurrentState != _nTargetState )
{
WizardState nNextState = determineNextState( nCurrentState );
if ( WZS_INVALID_STATE == nNextState )
{
OSL_FAIL( "OWizardMachine::skipUntil: the given target state does not exist!" );
return false;
}
// remember the skipped state in the history
aTravelVirtually.push( nCurrentState );
// get the next state
nCurrentState = nNextState;
}
m_pImpl->aStateHistory = aTravelVirtually;
// show the target page
if ( !ShowPage( nCurrentState ) )
{
// argh! prepareLeaveCurrentPage succeeded, determineNextState succeeded,
// but ShowPage doesn't? Somebody behaves very strange here ....
OSL_FAIL( "OWizardMachine::skipUntil: very unpolite ...." );
m_pImpl->aStateHistory = aOldStateHistory;
return false;
}
return true;
}
bool OWizardMachine::skip(sal_Int32 _nSteps)
{
DBG_ASSERT(_nSteps > 0, "OWizardMachine::skip: invalid number of steps!");
// allowed to leave the current page?
if ( !prepareLeaveCurrentState( eTravelForward ) )
return false;
WizardState nCurrentState = getCurrentState();
WizardState nNextState = determineNextState(nCurrentState);
// loop _nSteps steps
while (_nSteps-- > 0)
{
if (WZS_INVALID_STATE == nNextState)
return false;
// remember the skipped state in the history
m_pImpl->aStateHistory.push(nCurrentState);
// get the next state
nCurrentState = nNextState;
nNextState = determineNextState(nCurrentState);
}
// show the (n+1)th page
if (!ShowPage(nCurrentState))
{
// TODO: this leaves us in a state where we have no current page and an inconsistent state history.
// Perhaps we should rollback the skipping here ....
OSL_FAIL("OWizardMachine::skip: very unpolite ....");
// if somebody does a skip and then does not allow to leave ...
// (can't be a commit error, as we've already committed the current page. So if ShowPage fails here,
// somebody behaves really strange ...)
return false;
}
// all fine
return true;
}
bool OWizardMachine::travelNext()
{
// allowed to leave the current page?
if ( !prepareLeaveCurrentState( eTravelForward ) )
return false;
// determine the next state to travel to
WizardState nCurrentState = getCurrentState();
WizardState nNextState = determineNextState(nCurrentState);
if (WZS_INVALID_STATE == nNextState)
return false;
// the state history is used by the enterState method
// all fine
m_pImpl->aStateHistory.push(nCurrentState);
if (!ShowPage(nNextState))
{
m_pImpl->aStateHistory.pop();
return false;
}
return true;
}
bool OWizardMachine::travelPrevious()
{
DBG_ASSERT(m_pImpl->aStateHistory.size() > 0, "OWizardMachine::travelPrevious: have no previous page!");
// allowed to leave the current page?
if ( !prepareLeaveCurrentState( eTravelBackward ) )
return false;
// the next state to switch to
WizardState nPreviousState = m_pImpl->aStateHistory.top();
// the state history is used by the enterState method
m_pImpl->aStateHistory.pop();
// show this page
if (!ShowPage(nPreviousState))
{
m_pImpl->aStateHistory.push(nPreviousState);
return false;
}
// all fine
return true;
}
void OWizardMachine::removePageFromHistory( WizardState nToRemove )
{
::std::stack< WizardState > aTemp;
while(!m_pImpl->aStateHistory.empty())
{
WizardState nPreviousState = m_pImpl->aStateHistory.top();
m_pImpl->aStateHistory.pop();
if(nPreviousState != nToRemove)
aTemp.push( nPreviousState );
else
break;
}
while(!aTemp.empty())
{
m_pImpl->aStateHistory.push( aTemp.top() );
aTemp.pop();
}
}
void OWizardMachine::enableAutomaticNextButtonState( bool _bEnable )
{
m_pImpl->m_bAutoNextButtonState = _bEnable;
}
bool OWizardMachine::isAutomaticNextButtonStateEnabled() const
{
return m_pImpl->m_bAutoNextButtonState;
}
IMPL_LINK_NOARG(OWizardMachine, OnPrevPage)
{
if ( isTravelingSuspended() )
return 0;
WizardTravelSuspension aTravelGuard( *this );
bool nRet = travelPrevious();
return nRet ? 1 : 0;
}
IMPL_LINK_NOARG(OWizardMachine, OnNextPage)
{
if ( isTravelingSuspended() )
return 0;
WizardTravelSuspension aTravelGuard( *this );
bool nRet = travelNext();
return nRet ? 1 : 0;
}
IWizardPageController* OWizardMachine::getPageController( TabPage* _pCurrentPage ) const
{
IWizardPageController* pController = dynamic_cast< IWizardPageController* >( _pCurrentPage );
return pController;
}
void OWizardMachine::getStateHistory( ::std::vector< WizardState >& _out_rHistory )
{
::std::stack< WizardState > aHistoryCopy( m_pImpl->aStateHistory );
while ( !aHistoryCopy.empty() )
{
_out_rHistory.push_back( aHistoryCopy.top() );
aHistoryCopy.pop();
}
}
bool OWizardMachine::canAdvance() const
{
return WZS_INVALID_STATE != determineNextState( getCurrentState() );
}
void OWizardMachine::updateTravelUI()
{
const IWizardPageController* pController = getPageController( GetPage( getCurrentState() ) );
OSL_ENSURE( pController != NULL, "RoadmapWizard::updateTravelUI: no controller for the current page!" );
bool bCanAdvance =
( !pController || pController->canAdvance() ) // the current page allows to advance
&& canAdvance(); // the dialog as a whole allows to advance
enableButtons( WZB_NEXT, bCanAdvance );
}
bool OWizardMachine::isTravelingSuspended() const
{
return m_pImpl->m_bTravelingSuspended;
}
void OWizardMachine::suspendTraveling( AccessGuard )
{
DBG_ASSERT( !m_pImpl->m_bTravelingSuspended, "OWizardMachine::suspendTraveling: already suspended!" );
m_pImpl->m_bTravelingSuspended = true;
}
void OWizardMachine::resumeTraveling( AccessGuard )
{
DBG_ASSERT( m_pImpl->m_bTravelingSuspended, "OWizardMachine::resumeTraveling: nothing to resume!" );
m_pImpl->m_bTravelingSuspended = false;
}
} // namespace svt
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