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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the examples of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 

    44 #include "xbeltree.h"

    45 

    46 XbelTree::XbelTree(QWidget *parent)

    47     : QTreeWidget(parent)

    48 {

    49     QStringList labels;

    50     labels << tr("Title") << tr("Location");

    51 

    52     header()->setResizeMode(QHeaderView::Stretch);

    53     setHeaderLabels(labels);

    54 

    55     folderIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirClosedIcon),

    56                          QIcon::Normal, QIcon::Off);

    57     folderIcon.addPixmap(style()->standardPixmap(QStyle::SP_DirOpenIcon),

    58                          QIcon::Normal, QIcon::On);

    59     bookmarkIcon.addPixmap(style()->standardPixmap(QStyle::SP_FileIcon));

    60 }

    61 

    62 bool XbelTree::read(QIODevice *device)

    63 {

    64     QString errorStr;

    65     int errorLine;

    66     int errorColumn;

    67 

    68     if (!domDocument.setContent(device, true, &errorStr, &errorLine,

    69                                 &errorColumn)) {

    70         QMessageBox::information(window(), tr("DOM Bookmarks"),

    71                                  tr("Parse error at line %1, column %2:\n%3")

    72                                  .arg(errorLine)

    73                                  .arg(errorColumn)

    74                                  .arg(errorStr));

    75         return false;

    76     }

    77 

    78     QDomElement root = domDocument.documentElement();

    79     if (root.tagName() != "xbel") {

    80         QMessageBox::information(window(), tr("DOM Bookmarks"),

    81                                  tr("The file is not an XBEL file."));

    82         return false;

    83     } else if (root.hasAttribute("version")

    84                && root.attribute("version") != "1.0") {

    85         QMessageBox::information(window(), tr("DOM Bookmarks"),

    86                                  tr("The file is not an XBEL version 1.0 "

    87                                     "file."));

    88         return false;

    89     }

    90 

    91     clear();

    92 

    93     disconnect(this, SIGNAL(itemChanged(QTreeWidgetItem *, int)),

    94                this, SLOT(updateDomElement(QTreeWidgetItem *, int)));

    95 

    96     QDomElement child = root.firstChildElement("folder");

    97     while (!child.isNull()) {

    98         parseFolderElement(child);

    99         child = child.nextSiblingElement("folder");

   100     }

   101 

   102     connect(this, SIGNAL(itemChanged(QTreeWidgetItem *, int)),

   103             this, SLOT(updateDomElement(QTreeWidgetItem *, int)));

   104 

   105     return true;

   106 }

   107 

   108 bool XbelTree::write(QIODevice *device)

   109 {

   110     const int IndentSize = 4;

   111 

   112     QTextStream out(device);

   113     domDocument.save(out, IndentSize);

   114     return true;

   115 }

   116 

   117 void XbelTree::updateDomElement(QTreeWidgetItem *item, int column)

   118 {

   119     QDomElement element = domElementForItem.value(item);

   120     if (!element.isNull()) {

   121         if (column == 0) {

   122             QDomElement oldTitleElement = element.firstChildElement("title");

   123             QDomElement newTitleElement = domDocument.createElement("title");

   124 

   125             QDomText newTitleText = domDocument.createTextNode(item->text(0));

   126             newTitleElement.appendChild(newTitleText);

   127 

   128             element.replaceChild(newTitleElement, oldTitleElement);

   129         } else {

   130             if (element.tagName() == "bookmark")

   131                 element.setAttribute("href", item->text(1));

   132         }

   133     }

   134 }

   135 

   136 void XbelTree::parseFolderElement(const QDomElement &element,

   137                                   QTreeWidgetItem *parentItem)

   138 {

   139     QTreeWidgetItem *item = createItem(element, parentItem);

   140 

   141     QString title = element.firstChildElement("title").text();

   142     if (title.isEmpty())

   143         title = QObject::tr("Folder");

   144 

   145     item->setFlags(item->flags() | Qt::ItemIsEditable);

   146     item->setIcon(0, folderIcon);

   147     item->setText(0, title);

   148 

   149     bool folded = (element.attribute("folded") != "no");

   150     setItemExpanded(item, !folded);

   151 

   152     QDomElement child = element.firstChildElement();

   153     while (!child.isNull()) {

   154         if (child.tagName() == "folder") {

   155             parseFolderElement(child, item);

   156         } else if (child.tagName() == "bookmark") {

   157             QTreeWidgetItem *childItem = createItem(child, item);

   158 

   159             QString title = child.firstChildElement("title").text();

   160             if (title.isEmpty())

   161                 title = QObject::tr("Folder");

   162 

   163             childItem->setFlags(item->flags() | Qt::ItemIsEditable);

   164             childItem->setIcon(0, bookmarkIcon);

   165             childItem->setText(0, title);

   166             childItem->setText(1, child.attribute("href"));

   167         } else if (child.tagName() == "separator") {

   168             QTreeWidgetItem *childItem = createItem(child, item);

   169             childItem->setFlags(item->flags() & ~(Qt::ItemIsSelectable | Qt::ItemIsEditable));

   170             childItem->setText(0, QString(30, 0xB7));

   171         }

   172         child = child.nextSiblingElement();

   173     }

   174 }

   175 

   176 QTreeWidgetItem *XbelTree::createItem(const QDomElement &element,

   177                                       QTreeWidgetItem *parentItem)

   178 {

   179     QTreeWidgetItem *item;

   180     if (parentItem) {

   181         item = new QTreeWidgetItem(parentItem);

   182     } else {

   183         item = new QTreeWidgetItem(this);

   184     }

   185     domElementForItem.insert(item, element);

   186     return item;

   187 }