1 files changed, 137 insertions, 0 deletions
diff --git a/src/app/history.cpp b/src/app/history.cpp
new file mode 100644
index 0000000..d9cb30e
--- /dev/null
+++ b/src/app/history.cpp
@@ -0,0 +1,137 @@
+// vim: set tabstop=4 shiftwidth=4 noexpandtab:
+/*
+Gwenview - A simple image viewer for KDE
+Copyright 2000-2004 Aurélien Gāteau
+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