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Diffstat (limited to 'src/assistant/tools/assistant/bookmarkmodel.cpp')
| -rw-r--r-- | src/assistant/tools/assistant/bookmarkmodel.cpp | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/src/assistant/tools/assistant/bookmarkmodel.cpp b/src/assistant/tools/assistant/bookmarkmodel.cpp new file mode 100644 index 000000000..49b89c38f --- /dev/null +++ b/src/assistant/tools/assistant/bookmarkmodel.cpp @@ -0,0 +1,461 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Assistant 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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include "bookmarkmodel.h" +#include "bookmarkitem.h" + +#include <QtCore/QMimeData> +#include <QtCore/QStack> + +#include <QtGui/QApplication> +#include <QtGui/QStyle> +#include <QtGui/QTreeView> + +const quint32 VERSION = 0xe53798; +const QLatin1String MIMETYPE("application/bookmarks.assistant"); + +BookmarkModel::BookmarkModel() + : QAbstractItemModel() + , m_folder(false) + , m_editable(false) + , rootItem(0) +{ +} + +BookmarkModel::~BookmarkModel() +{ + delete rootItem; +} + +QByteArray +BookmarkModel::bookmarks() const +{ + QByteArray ba; + QDataStream stream(&ba, QIODevice::WriteOnly); + stream << qint32(VERSION); + + const QModelIndex &root = index(0,0, QModelIndex()).parent(); + for (int i = 0; i < rowCount(root); ++i) + collectItems(index(i, 0, root), 0, &stream); + + return ba; +} + +void +BookmarkModel::setBookmarks(const QByteArray &bookmarks) +{ + beginResetModel(); + + delete rootItem; + folderIcon = QApplication::style()->standardIcon(QStyle::SP_DirClosedIcon); + bookmarkIcon = QIcon(QLatin1String(":/trolltech/assistant/images/bookmark.png")); + + rootItem = new BookmarkItem(DataVector() << tr("Name") << tr("Address") + << true); + + QStack<BookmarkItem*> parents; + QDataStream stream(bookmarks); + + qint32 version; + stream >> version; + if (version < VERSION) { + stream.device()->seek(0); + BookmarkItem* toolbar = new BookmarkItem(DataVector() << tr("Toolbar Menu") + << QLatin1String("Folder") << true); + rootItem->addChild(toolbar); + + BookmarkItem* menu = new BookmarkItem(DataVector() << tr("Bookmarks Menu") + << QLatin1String("Folder") << true); + rootItem->addChild(menu); + parents.push(menu); + } else { + parents.push(rootItem); + } + + qint32 depth; + bool expanded; + QString name, url; + while (!stream.atEnd()) { + stream >> depth >> name >> url >> expanded; + while ((parents.count() - 1) != depth) + parents.pop(); + + BookmarkItem *item = new BookmarkItem(DataVector() << name << url << expanded); + if (url == QLatin1String("Folder")) { + parents.top()->addChild(item); + parents.push(item); + } else { + parents.top()->addChild(item); + } + } + + cache.clear(); + setupCache(index(0,0, QModelIndex().parent())); + endResetModel(); +} + +void +BookmarkModel::setItemsEditable(bool editable) +{ + m_editable = editable; +} + +void +BookmarkModel::expandFoldersIfNeeeded(QTreeView *treeView) +{ + foreach (const QModelIndex &index, cache) + treeView->setExpanded(index, index.data(UserRoleExpanded).toBool()); +} + +QModelIndex +BookmarkModel::addItem(const QModelIndex &parent, bool isFolder) +{ + m_folder = isFolder; + QModelIndex next; + if (insertRow(rowCount(parent), parent)) + next = index(rowCount(parent) - 1, 0, parent); + m_folder = false; + + return next; +} + +bool +BookmarkModel::removeItem(const QModelIndex &index) +{ + if (!index.isValid()) + return false; + + QModelIndexList indexes; + if (rowCount(index) > 0) + indexes = collectItems(index); + indexes.append(index); + + foreach (const QModelIndex &itemToRemove, indexes) { + if (!removeRow(itemToRemove.row(), itemToRemove.parent())) + return false; + cache.remove(itemFromIndex(itemToRemove)); + } + return true; +} + +int +BookmarkModel::rowCount(const QModelIndex &index) const +{ + if (BookmarkItem *item = itemFromIndex(index)) + return item->childCount(); + return 0; +} + +int +BookmarkModel::columnCount(const QModelIndex &/*index*/) const +{ + return 2; +} + +QModelIndex +BookmarkModel::parent(const QModelIndex &index) const +{ + if (!index.isValid()) + return QModelIndex(); + + if (BookmarkItem *childItem = itemFromIndex(index)) { + if (BookmarkItem *parent = childItem->parent()) { + if (parent != rootItem) + return createIndex(parent->childNumber(), 0, parent); + } + } + return QModelIndex(); +} + +QModelIndex +BookmarkModel::index(int row, int column, const QModelIndex &index) const +{ + if (index.isValid() && (index.column() != 0 && index.column() != 1)) + return QModelIndex(); + + if (BookmarkItem *parent = itemFromIndex(index)) { + if (BookmarkItem *childItem = parent->child(row)) + return createIndex(row, column, childItem); + } + return QModelIndex(); +} + +Qt::DropActions +BookmarkModel::supportedDropActions () const +{ + return /* Qt::CopyAction | */Qt::MoveAction; +} + +Qt::ItemFlags +BookmarkModel::flags(const QModelIndex &index) const +{ + if (!index.isValid()) + return Qt::NoItemFlags; + + Qt::ItemFlags defaultFlags = Qt::ItemIsEnabled | Qt::ItemIsSelectable; + + if (m_editable) + defaultFlags |= Qt::ItemIsEditable; + + if (itemFromIndex(index) && index.data(UserRoleFolder).toBool()) { + if (index.column() > 0) + return defaultFlags &~ Qt::ItemIsEditable; + return defaultFlags | Qt::ItemIsDropEnabled; + } + + return defaultFlags | Qt::ItemIsDragEnabled; +} + +QVariant +BookmarkModel::data(const QModelIndex &index, int role) const +{ + if (index.isValid()) { + if (BookmarkItem *item = itemFromIndex(index)) { + switch (role) { + case Qt::EditRole: { + case Qt::DisplayRole: + if (index.data(UserRoleFolder).toBool() && index.column() == 1) + return QLatin1String(""); + return item->data(index.column()); + } break; + + case Qt::DecorationRole: { + if (index.column() == 0) + return index.data(UserRoleFolder).toBool() + ? folderIcon : bookmarkIcon; + } break; + + default:; + return item->data(role); + } + } + } + return QVariant(); +} + +void BookmarkModel::setData(const QModelIndex &index, const DataVector &data) +{ + if (BookmarkItem *item = itemFromIndex(index)) { + item->setData(data); + emit dataChanged(index, index); + } +} + +bool +BookmarkModel::setData(const QModelIndex &index, const QVariant &value, int role) +{ + bool result = false; + if (role != Qt::EditRole && role != UserRoleExpanded) + return result; + + if (BookmarkItem *item = itemFromIndex(index)) { + if (role == Qt::EditRole) { + const bool isFolder = index.data(UserRoleFolder).toBool(); + if (!isFolder || (isFolder && index.column() == 0)) + result = item->setData(index.column(), value); + } else if (role == UserRoleExpanded) { + result = item->setData(UserRoleExpanded, value); + } + } + + if (result) + emit dataChanged(index, index); + return result; +} + +QVariant +BookmarkModel::headerData(int section, Qt::Orientation orientation, + int role) const +{ + if (rootItem && orientation == Qt::Horizontal && role == Qt::DisplayRole) + return rootItem->data(section); + return QVariant(); +} + +QModelIndex +BookmarkModel::indexFromItem(BookmarkItem *item) const +{ + return cache.value(item, QModelIndex()); +} + +BookmarkItem* +BookmarkModel::itemFromIndex(const QModelIndex &index) const +{ + if (index.isValid()) + return static_cast<BookmarkItem*>(index.internalPointer()); + return rootItem; +} + +QList<QPersistentModelIndex> +BookmarkModel::indexListFor(const QString &label) const +{ + QList<QPersistentModelIndex> hits; + const QModelIndexList &list = collectItems(QModelIndex()); + foreach(const QModelIndex &index, list) { + if (index.data().toString().contains(label, Qt::CaseInsensitive)) + hits.prepend(index); // list is reverse sorted + } + return hits; +} + +bool +BookmarkModel::insertRows(int position, int rows, const QModelIndex &parent) +{ + if (!parent.data(UserRoleFolder).toBool()) + return false; + + bool success = false; + if (BookmarkItem *parentItem = itemFromIndex(parent)) { + beginInsertRows(parent, position, position + rows - 1); + success = parentItem->insertChildren(m_folder, position, rows); + if (success) { + const QModelIndex ¤t = index(position, 0, parent); + cache.insert(itemFromIndex(current), current); + } + endInsertRows(); + } + return success; +} + +bool +BookmarkModel::removeRows(int position, int rows, const QModelIndex &index) +{ + bool success = false; + if (BookmarkItem *parent = itemFromIndex(index)) { + beginRemoveRows(index, position, position + rows - 1); + success = parent->removeChildren(position, rows); + endRemoveRows(); + } + return success; +} + +QStringList +BookmarkModel::mimeTypes() const +{ + return QStringList() << MIMETYPE; +} + +QMimeData* +BookmarkModel::mimeData(const QModelIndexList &indexes) const +{ + if (indexes.isEmpty()) + return 0; + + QByteArray data; + QDataStream stream(&data, QIODevice::WriteOnly); + + foreach (const QModelIndex &index, indexes) { + if (index.column() == 0) + collectItems(index, 0, &stream); + } + + QMimeData *mimeData = new QMimeData(); + mimeData->setData(MIMETYPE, data); + return mimeData; +} + +bool +BookmarkModel::dropMimeData(const QMimeData *data, Qt::DropAction action, + int row, int column, const QModelIndex &parent) +{ + if (action == Qt::IgnoreAction) + return true; + + if (!data->hasFormat(MIMETYPE) || column > 0) + return false; + + QByteArray ba = data->data(MIMETYPE); + QDataStream stream(&ba, QIODevice::ReadOnly); + while (stream.atEnd()) + return false; + + qint32 depth; + bool expanded; + QString name, url; + while (!stream.atEnd()) { + stream >> depth >> name >> url >> expanded; + if (insertRow(qMax(0, row), parent)) { + const QModelIndex ¤t = index(qMax(0, row), 0, parent); + if (current.isValid()) { + BookmarkItem* item = itemFromIndex(current); + item->setData(DataVector() << name << url << expanded); + } + } + } + return true; +} + +void +BookmarkModel::setupCache(const QModelIndex &parent) +{ + const QModelIndexList &list = collectItems(parent); + foreach (const QModelIndex &index, list) + cache.insert(itemFromIndex(index), index); +} + +QModelIndexList +BookmarkModel::collectItems(const QModelIndex &parent) const +{ + QModelIndexList list; + for (int i = rowCount(parent) - 1; i >= 0 ; --i) { + const QModelIndex &next = index(i, 0, parent); + if (data(next, UserRoleFolder).toBool()) + list += collectItems(next); + list.append(next); + } + return list; +} + +void +BookmarkModel::collectItems(const QModelIndex &parent, qint32 depth, + QDataStream *stream) const +{ + if (parent.isValid()) { + *stream << depth; + *stream << parent.data().toString(); + *stream << parent.data(UserRoleUrl).toString(); + *stream << parent.data(UserRoleExpanded).toBool(); + + for (int i = 0; i < rowCount(parent); ++i) { + if (parent.data(UserRoleFolder).toBool()) + collectItems(index(i, 0 , parent), depth + 1, stream); + } + } +} |