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/*
* Copyright (C) 2009-2012 Geometer Plus <[email protected]>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "LibraryView.h"
#include "LibraryNodes.h"
#include "../library/Library.h"
#include "../library/Book.h"
#include "../library/Author.h"
LibraryByAuthorView::LibraryByAuthorView(ZLPaintContext &context) : LibraryView(context) {
}
void LibraryByAuthorView::addAuthorSubtree(shared_ptr<Author> author, std::size_t atPosition) {
static const std::set<shared_ptr<Book> > emptySet;
fillAuthorSubtree(new AuthorNode(&rootNode(), atPosition, author), emptySet);
}
void LibraryByAuthorView::fillAuthorSubtree(AuthorNode *authorNode, const std::set<shared_ptr<Book> > &visibleBooks) {
const BookList &books = Library::Instance().books(authorNode->author());
SeriesNode *seriesNode = 0;
for (BookList::const_iterator it = books.begin(); it != books.end(); ++it) {
std::string series = (*it)->seriesTitle();
if (!series.empty() && (seriesNode == 0 || seriesNode->book()->seriesTitle() != series)) {
BookList::const_iterator jt = it + 1;
if (jt == books.end() || (*jt)->seriesTitle() != series) {
series.clear();
}
}
if (series.empty()) {
seriesNode = 0;
new BookNode(authorNode, *it);
} else {
if (seriesNode == 0 || seriesNode->book()->seriesTitle() != series) {
seriesNode = new SeriesNode(authorNode);
}
new BookNode(seriesNode, *it);
if (visibleBooks.find(*it) != visibleBooks.end()) {
seriesNode->open(true);
}
}
}
}
bool LibraryByAuthorView::isSubtreeUpToDate(AuthorNode *authorNode) {
const BookList &books = Library::Instance().books(authorNode->author());
BookList::const_iterator it = books.begin();
const ZLBlockTreeNode::List &nodes = authorNode->children();
for (ZLBlockTreeNode::List::const_iterator nIt = nodes.begin(); nIt != nodes.end(); ++nIt) {
FBReaderNode &node = *(FBReaderNode*)*nIt;
if (node.isInstanceOf(BookNode::TYPE_ID)) {
shared_ptr<Book> book = ((BookNode&)node).book();
if (it == books.end() || *it != book || !book->seriesTitle().empty()) {
return false;
}
++it;
} else /* if (node.isInstanceOf(SeriesNode::TYPE_ID)) */ {
const ZLBlockTreeNode::List &bNodes = node.children();
for (ZLBlockTreeNode::List::const_iterator bookIt = bNodes.begin(); bookIt != bNodes.end(); ++bookIt) {
shared_ptr<Book> book = ((BookNode*)*bookIt)->book();
if (it == books.end() || *it != book || book->seriesTitle().empty()) {
return false;
}
++it;
}
}
}
return it == books.end();
}
void LibraryByAuthorView::updateAuthorSubtree(AuthorNode *authorNode) {
std::set<shared_ptr<Book> > visibleBooks;
const ZLBlockTreeNode::List &nodes = authorNode->children();
for (ZLBlockTreeNode::List::const_iterator nIt = nodes.begin(); nIt != nodes.end(); ++nIt) {
FBReaderNode &node = *(FBReaderNode*)*nIt;
if (node.isInstanceOf(BookNode::TYPE_ID)) {
visibleBooks.insert(((BookNode&)node).book());
} else if (node.isOpen()) {
const ZLBlockTreeNode::List &bNodes = node.children();
for (ZLBlockTreeNode::List::const_iterator bookIt = bNodes.begin(); bookIt != bNodes.end(); ++bookIt) {
visibleBooks.insert(((BookNode*)*bookIt)->book());
}
}
}
authorNode->clear();
fillAuthorSubtree(authorNode, visibleBooks);
}
void LibraryByAuthorView::makeUpToDate() {
ZLBlockTreeNode *topNode = firstVisibleNode();
AuthorNode *topAuthorNode = 0;
if (topNode != &rootNode()) {
FBReaderNode *lNode = (FBReaderNode*)topNode;
while (!lNode->isInstanceOf(AuthorNode::TYPE_ID)) {
lNode = (FBReaderNode*)lNode->parent();
}
topAuthorNode = (AuthorNode*)lNode;
}
bool topAuthorNodeIsUpdated = false;
const AuthorList &authors = Library::Instance().authors();
std::set<ZLBlockTreeNode*> nodesToDelete;
ZLBlockTreeNode::List rootChildren = rootNode().children();
AuthorComparator comparator;
ZLBlockTreeNode::List::iterator nodeIt = rootChildren.begin();
std::size_t nodeCount = 0;
for (AuthorList::const_iterator it = authors.begin(); it != authors.end(); ++it) {
bool processed = false;
while (nodeIt != rootChildren.end()) {
AuthorNode *authorNode = (AuthorNode*)*nodeIt;
if (authorNode->author() == *it) {
if (!isSubtreeUpToDate(authorNode)) {
updateAuthorSubtree(authorNode);
if (authorNode == topAuthorNode) {
topAuthorNodeIsUpdated = true;
}
}
++nodeIt;
++nodeCount;
processed = true;
break;
} else if (comparator(authorNode->author(), *it)) {
nodesToDelete.insert(*nodeIt);
++nodeIt;
++nodeCount;
} else {
break;
}
}
if (!processed) {
addAuthorSubtree(*it, nodeCount);
++nodeCount;
}
}
nodesToDelete.insert(nodeIt, rootChildren.end());
if (topAuthorNodeIsUpdated) {
setFirstVisibleNode(topAuthorNode);
} else if (nodesToDelete.find(topAuthorNode) != nodesToDelete.end()) {
ZLBlockTreeNode *visible = topAuthorNode->previous();
while (nodesToDelete.find(visible) != nodesToDelete.end()) {
visible = visible->previous();
}
setFirstVisibleNode(visible);
}
for (std::set<ZLBlockTreeNode*>::iterator it = nodesToDelete.begin(); it != nodesToDelete.end(); ++it) {
delete *it;
}
}
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