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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "xbeltree.h"
#include <QHeaderView>
#include <QMenu>
#include <QMessageBox>
#include <QDesktopServices>
#include <QGuiApplication>
#if QT_CONFIG(clipboard) && QT_CONFIG(contextmenu)
# include <QClipboard>
# include <QContextMenuEvent>
#endif
#include <QUrl>
using namespace Qt::StringLiterals;
enum { DomElementRole = Qt::UserRole + 1 };
Q_DECLARE_METATYPE(QDomElement)
static const auto titleElement = u"title"_s;
static const auto folderElement = u"folder"_s;
static const auto bookmarkElement = u"bookmark"_s;
static const auto versionAttribute = u"version"_s;
static const auto hrefAttribute = u"href"_s;
static const auto foldedAttribute = u"folded"_s;
//! [0]
XbelTree::XbelTree(QWidget *parent)
: QTreeWidget(parent)
{
header()->setSectionResizeMode(QHeaderView::Stretch);
setHeaderLabels({tr("Title"), tr("Location")});
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));
}
//! [0]
#if QT_CONFIG(clipboard) && QT_CONFIG(contextmenu)
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_CONFIG(clipboard) && QT_CONFIG(contextmenu)
//! [1]
bool XbelTree::read(QIODevice *device)
{
QDomDocument::ParseResult result =
domDocument.setContent(device, QDomDocument::ParseOption::UseNamespaceProcessing);
if (!result) {
QMessageBox::information(window(), tr("DOM Bookmarks"),
tr("Parse error at line %1, column %2:\n%3")
.arg(result.errorLine)
.arg(result.errorColumn)
.arg(result.errorMessage));
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) != "1.0"_L1) {
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;
}
//! [1]
//! [2]
bool XbelTree::write(QIODevice *device) const
{
const int IndentSize = 4;
QTextStream out(device);
domDocument.save(out, IndentSize);
return true;
}
//! [2]
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));
}
}
}
//! [3]
void XbelTree::parseFolderElement(const QDomElement &element,
QTreeWidgetItem *parentItem)
{
QTreeWidgetItem *item = createItem(element, parentItem);
QString title = element.firstChildElement(titleElement).text();
if (title.isEmpty())
title = tr("Folder");
item->setFlags(item->flags() | Qt::ItemIsEditable);
item->setIcon(0, folderIcon);
item->setText(0, title);
bool folded = (element.attribute(foldedAttribute) != "no"_L1);
item->setExpanded(!folded);
constexpr char16_t midDot = u'\xB7';
static const QString dots = QString(30, midDot);
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 = 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() == "separator"_L1) {
QTreeWidgetItem *childItem = createItem(child, item);
childItem->setFlags(item->flags() & ~(Qt::ItemIsSelectable | Qt::ItemIsEditable));
childItem->setText(0, dots);
}
child = child.nextSiblingElement();
}
}
//! [3]
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;
}
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