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// vim: set tabstop=4 shiftwidth=4 noexpandtab:
/*
Gwenview - A simple image viewer for KDE
Copyright 2000-2004 Aurélien Gâteau
Copyright 2003 Tudor Calin
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// KDE
#include <kaction.h>
#include <klocale.h>
#include <kpopupmenu.h>
#include <kdeversion.h>
#include <kstdaccel.h>
#include <kstdguiitem.h>
// Local
#include "history.moc"
namespace Gwenview {
const unsigned int MAX_HISTORY_SIZE=12;
History::History(KActionCollection* actionCollection) {
mPosition=mHistoryList.end();
mMovingInHistory=false;
// Actions
QPair<KGuiItem, KGuiItem> backForward = KStdGuiItem::backAndForward();
mGoBack=new KToolBarPopupAction(backForward.first,
KStdAccel::shortcut(KStdAccel::Back),
this, SLOT(goBack()), actionCollection, "go_back");
mGoForward=new KToolBarPopupAction(backForward.second,
KStdAccel::shortcut(KStdAccel::Forward),
this, SLOT(goForward()), actionCollection, "go_forward");
// Connections
connect(mGoBack->popupMenu(),SIGNAL(activated(int)),
this,SLOT(goBackTo(int)) );
connect(mGoForward->popupMenu(),SIGNAL(activated(int)),
this,SLOT(goForwardTo(int)) );
connect(mGoBack->popupMenu(), SIGNAL(aboutToShow()),
this, SLOT(fillGoBackMenu()) );
connect(mGoForward->popupMenu(), SIGNAL(aboutToShow()),
this, SLOT(fillGoForwardMenu()) );
}
History::~History() {
}
void History::addURLToHistory(const KURL& url2) {
KURL url( url2 );
url.setFileName( QString::null );
if (!mMovingInHistory) {
if (mPosition!=mHistoryList.end() && url.equals(*mPosition, true)) return;
// Drop everything after current
HistoryList::iterator it=mPosition;
++it;
mHistoryList.erase(it, mHistoryList.end());
mHistoryList.append(url);
if(mHistoryList.count()==MAX_HISTORY_SIZE) mHistoryList.pop_front();
mPosition=mHistoryList.fromLast();
}
mGoBack->setEnabled(mPosition!=mHistoryList.begin());
mGoForward->setEnabled(mPosition!=mHistoryList.fromLast());
}
void History::fillGoBackMenu() {
QPopupMenu* menu=mGoBack->popupMenu();
menu->clear();
HistoryList::ConstIterator it;
int pos=1;
for(it=mHistoryList.begin(); it!=mPosition; ++it, ++pos) {
menu->insertItem( (*it).prettyURL(-1), pos, 0);
}
}
void History::fillGoForwardMenu() {
QPopupMenu* menu=mGoForward->popupMenu();
menu->clear();
HistoryList::ConstIterator it=mPosition;
++it;
int pos=1;
for(; it!=mHistoryList.end(); ++it, ++pos) {
menu->insertItem( (*it).prettyURL(-1), pos, -1);
}
}
void History::goBack() {
goBackTo(1);
}
void History::goForward() {
goForwardTo(1);
}
void History::goBackTo(int id) {
for (;id>0; --id) --mPosition;
mMovingInHistory=true;
emit urlChanged(*mPosition);
mMovingInHistory=false;
}
void History::goForwardTo(int id) {
for (;id>0; --id) ++mPosition;
mMovingInHistory=true;
emit urlChanged(*mPosition);
mMovingInHistory=false;
}
} // namespace
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