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88 lines
2.2 KiB
88 lines
2.2 KiB
/*
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Copyright (C) 2013 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "browsehistory.h"
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using namespace Fm;
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BrowseHistory::BrowseHistory():
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currentIndex_(0),
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maxCount_(10) {
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}
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BrowseHistory::~BrowseHistory() {
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}
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void BrowseHistory::add(FmPath* path, int scrollPos) {
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int lastIndex = size() - 1;
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if(currentIndex_ < lastIndex) {
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// if we're not at the last item, remove items after the current one.
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erase(begin() + currentIndex_ + 1, end());
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}
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if(size() + 1 > maxCount_) {
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// if there are too many items, remove the oldest one.
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// FIXME: what if currentIndex_ == 0? remove the last item instead?
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if(currentIndex_ == 0)
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remove(lastIndex);
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else {
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remove(0);
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--currentIndex_;
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}
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}
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// add a path and current scroll position to browse history
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append(BrowseHistoryItem(path, scrollPos));
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currentIndex_ = size() - 1;
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}
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void BrowseHistory::setCurrentIndex(int index) {
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if(index >= 0 && index < size()) {
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currentIndex_ = index;
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// FIXME: should we emit a signal for the change?
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}
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}
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bool BrowseHistory::canBackward() const {
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return (currentIndex_ > 0);
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}
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int BrowseHistory::backward() {
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if(canBackward())
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--currentIndex_;
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return currentIndex_;
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}
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bool BrowseHistory::canForward() const {
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return (currentIndex_ + 1 < size());
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}
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int BrowseHistory::forward() {
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if(canForward())
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++currentIndex_;
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return currentIndex_;
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}
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void BrowseHistory::setMaxCount(int maxCount) {
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maxCount_ = maxCount;
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if(size() > maxCount) {
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// TODO: remove some items
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}
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}
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