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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 "controller/SlsFocusManager.hxx"
#include "SlideSorter.hxx"
#include "PaneDockingWindow.hxx"
#include "controller/SlideSorterController.hxx"
#include "controller/SlsCurrentSlideManager.hxx"
#include "controller/SlsVisibleAreaManager.hxx"
#include "model/SlideSorterModel.hxx"
#include "model/SlsPageDescriptor.hxx"
#include "view/SlideSorterView.hxx"
#include "view/SlsLayouter.hxx"
#include <vcl/toolbox.hxx>
#include "Window.hxx"
#include "sdpage.hxx"
namespace sd { namespace slidesorter { namespace controller {
FocusManager::FocusManager (SlideSorter& rSlideSorter)
: mrSlideSorter(rSlideSorter),
mnPageIndex(0),
mbPageIsFocused(false),
mbIsVerticalWrapActive(false)
{
if (mrSlideSorter.GetModel().GetPageCount() > 0)
mnPageIndex = 0;
}
FocusManager::~FocusManager()
{
}
void FocusManager::MoveFocus (FocusMoveDirection eDirection)
{
if (mnPageIndex >= 0 && mbPageIsFocused)
{
HideFocusIndicator (GetFocusedPageDescriptor());
const sal_Int32 nColumnCount (mrSlideSorter.GetView().GetLayouter().GetColumnCount());
const sal_Int32 nPageCount (mrSlideSorter.GetModel().GetPageCount());
switch (eDirection)
{
case FMD_NONE:
// Nothing to be done.
break;
case FMD_LEFT:
if (mnPageIndex > 0)
mnPageIndex -= 1;
else if (mbIsVerticalWrapActive)
mnPageIndex = nPageCount-1;
break;
case FMD_RIGHT:
if (mnPageIndex < nPageCount-1)
mnPageIndex += 1;
else if (mbIsVerticalWrapActive)
mnPageIndex = 0;
break;
case FMD_UP:
{
const sal_Int32 nCandidate (mnPageIndex - nColumnCount);
if (nCandidate < 0)
{
if (mbIsVerticalWrapActive)
{
// Wrap around to the bottom row or the one above
// and go to the correct column.
const sal_Int32 nLastIndex (nPageCount-1);
const sal_Int32 nLastColumn (nLastIndex % nColumnCount);
const sal_Int32 nCurrentColumn (mnPageIndex%nColumnCount);
if (nLastColumn >= nCurrentColumn)
{
// The last row contains the current column.
mnPageIndex = nLastIndex - (nLastColumn-nCurrentColumn);
}
else
{
// Only the second to last row contains the current column.
mnPageIndex = nLastIndex - nLastColumn
- nColumnCount
+ nCurrentColumn;
}
}
}
else
{
// Move the focus the previous row.
mnPageIndex = nCandidate;
}
}
break;
case FMD_DOWN:
{
const sal_Int32 nCandidate (mnPageIndex + nColumnCount);
if (nCandidate >= nPageCount)
{
if (mbIsVerticalWrapActive)
{
// Wrap around to the correct column.
mnPageIndex = mnPageIndex % nColumnCount;
}
else
{
// Do not move the focus.
}
}
else
{
// Move the focus to the next row.
mnPageIndex = nCandidate;
}
}
break;
}
if (mnPageIndex < 0)
{
OSL_ASSERT(mnPageIndex>=0);
mnPageIndex = 0;
}
else if (mnPageIndex >= nPageCount)
{
OSL_ASSERT(mnPageIndex<nPageCount);
mnPageIndex = nPageCount - 1;
}
if (mbPageIsFocused)
{
ShowFocusIndicator(GetFocusedPageDescriptor(), true);
}
}
}
void FocusManager::ShowFocus (const bool bScrollToFocus)
{
mbPageIsFocused = true;
ShowFocusIndicator(GetFocusedPageDescriptor(), bScrollToFocus);
}
void FocusManager::HideFocus()
{
mbPageIsFocused = false;
HideFocusIndicator(GetFocusedPageDescriptor());
}
bool FocusManager::ToggleFocus()
{
if (mnPageIndex >= 0)
{
if (mbPageIsFocused)
HideFocus ();
else
ShowFocus ();
}
return mbPageIsFocused;
}
bool FocusManager::HasFocus() const
{
return mrSlideSorter.GetContentWindow()->HasFocus();
}
model::SharedPageDescriptor FocusManager::GetFocusedPageDescriptor() const
{
return mrSlideSorter.GetModel().GetPageDescriptor(mnPageIndex);
}
void FocusManager::SetFocusedPage (const model::SharedPageDescriptor& rpDescriptor)
{
if (rpDescriptor.get() != NULL)
{
FocusHider aFocusHider (*this);
mnPageIndex = (rpDescriptor->GetPage()->GetPageNum()-1)/2;
}
}
void FocusManager::SetFocusedPage (sal_Int32 nPageIndex)
{
FocusHider aFocusHider (*this);
mnPageIndex = nPageIndex;
}
void FocusManager::SetFocusedPageToCurrentPage()
{
SetFocusedPage(mrSlideSorter.GetController().GetCurrentSlideManager()->GetCurrentSlide());
}
bool FocusManager::IsFocusShowing() const
{
return HasFocus() && mbPageIsFocused;
}
void FocusManager::HideFocusIndicator (const model::SharedPageDescriptor& rpDescriptor)
{
if (rpDescriptor.get() != NULL)
{
mrSlideSorter.GetView().SetState(rpDescriptor, model::PageDescriptor::ST_Focused, false);
// Hide focus should also fire the focus event, Currently, only accessibility add the focus listener
NotifyFocusChangeListeners();
}
}
void FocusManager::ShowFocusIndicator (
const model::SharedPageDescriptor& rpDescriptor,
const bool bScrollToFocus)
{
if (rpDescriptor.get() != NULL)
{
mrSlideSorter.GetView().SetState(rpDescriptor, model::PageDescriptor::ST_Focused, true);
if (bScrollToFocus)
{
// Scroll the focused page object into the visible area and repaint
// it, so that the focus indicator becomes visible.
mrSlideSorter.GetController().GetVisibleAreaManager().RequestVisible(rpDescriptor,true);
}
mrSlideSorter.GetView().RequestRepaint(rpDescriptor);
NotifyFocusChangeListeners();
}
}
void FocusManager::AddFocusChangeListener (const Link<>& rListener)
{
if (::std::find (maFocusChangeListeners.begin(), maFocusChangeListeners.end(), rListener)
== maFocusChangeListeners.end())
{
maFocusChangeListeners.push_back (rListener);
}
}
void FocusManager::RemoveFocusChangeListener (const Link<>& rListener)
{
maFocusChangeListeners.erase (
::std::find (maFocusChangeListeners.begin(), maFocusChangeListeners.end(), rListener));
}
void FocusManager::NotifyFocusChangeListeners() const
{
// Create a copy of the listener list to be safe when that is modified.
::std::vector<Link<>> aListeners (maFocusChangeListeners);
// Tell the selection change listeners that the selection has changed.
::std::vector<Link<>>::iterator iListener (aListeners.begin());
::std::vector<Link<>>::iterator iEnd (aListeners.end());
for (; iListener!=iEnd; ++iListener)
{
iListener->Call(NULL);
}
}
FocusManager::FocusHider::FocusHider (FocusManager& rManager)
: mbFocusVisible(rManager.IsFocusShowing())
, mrManager(rManager)
{
mrManager.HideFocus();
}
FocusManager::FocusHider::~FocusHider()
{
if (mbFocusVisible)
mrManager.ShowFocus();
}
} } } // end of namespace ::sd::slidesorter::controller
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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