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Diffstat (limited to 'examples/xml/dombookmarks/xbeltree.cpp')
| -rw-r--r-- | examples/xml/dombookmarks/xbeltree.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/examples/xml/dombookmarks/xbeltree.cpp b/examples/xml/dombookmarks/xbeltree.cpp new file mode 100644 index 0000000000..37e8bb2983 --- /dev/null +++ b/examples/xml/dombookmarks/xbeltree.cpp @@ -0,0 +1,187 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +#include "xbeltree.h" + +XbelTree::XbelTree(QWidget *parent) + : QTreeWidget(parent) +{ + QStringList labels; + labels << tr("Title") << tr("Location"); + + header()->setResizeMode(QHeaderView::Stretch); + setHeaderLabels(labels); + + folderIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirClosedIcon), + QIcon::Normal, QIcon::Off); + folderIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirOpenIcon), + QIcon::Normal, QIcon::On); + bookmarkIcon.addPixmap(style()->standardPixmap(QStyle::SP_FileIcon)); +} + +bool XbelTree::read(QIODevice *device) +{ + QString errorStr; + int errorLine; + int errorColumn; + + if (!domDocument.setContent(device, true, &errorStr, &errorLine, + &errorColumn)) { + QMessageBox::information(window(), tr("DOM Bookmarks"), + tr("Parse error at line %1, column %2:\n%3") + .arg(errorLine) + .arg(errorColumn) + .arg(errorStr)); + return false; + } + + QDomElement root = domDocument.documentElement(); + if (root.tagName() != "xbel") { + QMessageBox::information(window(), tr("DOM Bookmarks"), + tr("The file is not an XBEL file.")); + return false; + } else if (root.hasAttribute("version") + && root.attribute("version") != "1.0") { + QMessageBox::information(window(), tr("DOM Bookmarks"), + tr("The file is not an XBEL version 1.0 " + "file.")); + return false; + } + + clear(); + + disconnect(this, SIGNAL(itemChanged(QTreeWidgetItem *, int)), + this, SLOT(updateDomElement(QTreeWidgetItem *, int))); + + QDomElement child = root.firstChildElement("folder"); + while (!child.isNull()) { + parseFolderElement(child); + child = child.nextSiblingElement("folder"); + } + + connect(this, SIGNAL(itemChanged(QTreeWidgetItem *, int)), + this, SLOT(updateDomElement(QTreeWidgetItem *, int))); + + return true; +} + +bool XbelTree::write(QIODevice *device) +{ + const int IndentSize = 4; + + QTextStream out(device); + domDocument.save(out, IndentSize); + return true; +} + +void XbelTree::updateDomElement(QTreeWidgetItem *item, int column) +{ + QDomElement element = domElementForItem.value(item); + if (!element.isNull()) { + if (column == 0) { + QDomElement oldTitleElement = element.firstChildElement("title"); + QDomElement newTitleElement = domDocument.createElement("title"); + + QDomText newTitleText = domDocument.createTextNode(item->text(0)); + newTitleElement.appendChild(newTitleText); + + element.replaceChild(newTitleElement, oldTitleElement); + } else { + if (element.tagName() == "bookmark") + element.setAttribute("href", item->text(1)); + } + } +} + +void XbelTree::parseFolderElement(const QDomElement &element, + QTreeWidgetItem *parentItem) +{ + QTreeWidgetItem *item = createItem(element, parentItem); + + QString title = element.firstChildElement("title").text(); + if (title.isEmpty()) + title = QObject::tr("Folder"); + + item->setFlags(item->flags() | Qt::ItemIsEditable); + item->setIcon(0, folderIcon); + item->setText(0, title); + + bool folded = (element.attribute("folded") != "no"); + setItemExpanded(item, !folded); + + QDomElement child = element.firstChildElement(); + while (!child.isNull()) { + if (child.tagName() == "folder") { + parseFolderElement(child, item); + } else if (child.tagName() == "bookmark") { + QTreeWidgetItem *childItem = createItem(child, item); + + QString title = child.firstChildElement("title").text(); + if (title.isEmpty()) + title = QObject::tr("Folder"); + + childItem->setFlags(item->flags() | Qt::ItemIsEditable); + childItem->setIcon(0, bookmarkIcon); + childItem->setText(0, title); + childItem->setText(1, child.attribute("href")); + } else if (child.tagName() == "separator") { + QTreeWidgetItem *childItem = createItem(child, item); + childItem->setFlags(item->flags() & ~(Qt::ItemIsSelectable | Qt::ItemIsEditable)); + childItem->setText(0, QString(30, 0xB7)); + } + child = child.nextSiblingElement(); + } +} + +QTreeWidgetItem *XbelTree::createItem(const QDomElement &element, + QTreeWidgetItem *parentItem) +{ + QTreeWidgetItem *item; + if (parentItem) { + item = new QTreeWidgetItem(parentItem); + } else { + item = new QTreeWidgetItem(this); + } + domElementForItem.insert(item, element); + return item; +} |