1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
// 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 <QTextStream>
#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;
}
|
