| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the examples of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
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| ** BSD License Usage |
| ** Alternatively, you may use this file under the terms of the BSD license |
| ** as follows: |
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| ****************************************************************************/ |
| |
| #include <QtWidgets> |
| |
| #include "xbeltree.h" |
| |
| enum { DomElementRole = Qt::UserRole + 1 }; |
| |
| Q_DECLARE_METATYPE(QDomElement) |
| |
| static inline QString titleElement() { return QStringLiteral("title"); } |
| static inline QString folderElement() { return QStringLiteral("folder"); } |
| static inline QString bookmarkElement() { return QStringLiteral("bookmark"); } |
| |
| static inline QString versionAttribute() { return QStringLiteral("version"); } |
| static inline QString hrefAttribute() { return QStringLiteral("href"); } |
| static inline QString foldedAttribute() { return QStringLiteral("folded"); } |
| |
| XbelTree::XbelTree(QWidget *parent) |
| : QTreeWidget(parent) |
| { |
| QStringList labels; |
| labels << tr("Title") << tr("Location"); |
| |
| header()->setSectionResizeMode(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)); |
| } |
| |
| #if !defined(QT_NO_CONTEXTMENU) && !defined(QT_NO_CLIPBOARD) |
| void XbelTree::contextMenuEvent(QContextMenuEvent *event) |
| { |
| const QTreeWidgetItem *item = itemAt(event->pos()); |
| if (!item) |
| return; |
| const QString url = item->text(1); |
| QMenu contextMenu; |
| QAction *copyAction = contextMenu.addAction(tr("Copy Link to Clipboard")); |
| QAction *openAction = contextMenu.addAction(tr("Open")); |
| QAction *action = contextMenu.exec(event->globalPos()); |
| if (action == copyAction) |
| QGuiApplication::clipboard()->setText(url); |
| else if (action == openAction) |
| QDesktopServices::openUrl(QUrl(url)); |
| } |
| #endif // !QT_NO_CONTEXTMENU && !QT_NO_CLIPBOARD |
| |
| 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(versionAttribute()) |
| && root.attribute(versionAttribute()) != QLatin1String("1.0")) { |
| QMessageBox::information(window(), tr("DOM Bookmarks"), |
| tr("The file is not an XBEL version 1.0 " |
| "file.")); |
| return false; |
| } |
| |
| clear(); |
| |
| disconnect(this, &QTreeWidget::itemChanged, this, &XbelTree::updateDomElement); |
| |
| QDomElement child = root.firstChildElement(folderElement()); |
| while (!child.isNull()) { |
| parseFolderElement(child); |
| child = child.nextSiblingElement(folderElement()); |
| } |
| |
| connect(this, &QTreeWidget::itemChanged, this, &XbelTree::updateDomElement); |
| |
| return true; |
| } |
| |
| bool XbelTree::write(QIODevice *device) const |
| { |
| const int IndentSize = 4; |
| |
| QTextStream out(device); |
| domDocument.save(out, IndentSize); |
| return true; |
| } |
| |
| void XbelTree::updateDomElement(const QTreeWidgetItem *item, int column) |
| { |
| QDomElement element = qvariant_cast<QDomElement>(item->data(0, DomElementRole)); |
| if (!element.isNull()) { |
| if (column == 0) { |
| QDomElement oldTitleElement = element.firstChildElement(titleElement()); |
| QDomElement newTitleElement = domDocument.createElement(titleElement()); |
| |
| QDomText newTitleText = domDocument.createTextNode(item->text(0)); |
| newTitleElement.appendChild(newTitleText); |
| |
| element.replaceChild(newTitleElement, oldTitleElement); |
| } else { |
| if (element.tagName() == bookmarkElement()) |
| element.setAttribute(hrefAttribute(), item->text(1)); |
| } |
| } |
| } |
| |
| void XbelTree::parseFolderElement(const QDomElement &element, |
| QTreeWidgetItem *parentItem) |
| { |
| QTreeWidgetItem *item = createItem(element, parentItem); |
| |
| QString title = element.firstChildElement(titleElement()).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(foldedAttribute()) != QLatin1String("no")); |
| item->setExpanded(!folded); |
| |
| QDomElement child = element.firstChildElement(); |
| while (!child.isNull()) { |
| if (child.tagName() == folderElement()) { |
| parseFolderElement(child, item); |
| } else if (child.tagName() == bookmarkElement()) { |
| QTreeWidgetItem *childItem = createItem(child, item); |
| |
| QString title = child.firstChildElement(titleElement()).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(hrefAttribute())); |
| } else if (child.tagName() == QLatin1String("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); |
| } |
| item->setData(0, DomElementRole, QVariant::fromValue(element)); |
| return item; |
| } |