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Diffstat (limited to 'src/gui/dialogs/qsidebar.cpp')
| -rw-r--r-- | src/gui/dialogs/qsidebar.cpp | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/src/gui/dialogs/qsidebar.cpp b/src/gui/dialogs/qsidebar.cpp new file mode 100644 index 0000000..1bd2b7d --- /dev/null +++ b/src/gui/dialogs/qsidebar.cpp @@ -0,0 +1,485 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module 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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsidebar_p.h" +#include "qfilesystemmodel.h" + +#ifndef QT_NO_FILEDIALOG + +#include <qaction.h> +#include <qurl.h> +#include <qmenu.h> +#include <qmimedata.h> +#include <qevent.h> +#include <qdebug.h> +#include <qfileiconprovider.h> +#include <qfiledialog.h> + +QT_BEGIN_NAMESPACE + +/*! + QUrlModel lets you have indexes from a QFileSystemModel to a list. When QFileSystemModel + changes them QUrlModel will automatically update. + + Example usage: File dialog sidebar and combo box + */ +QUrlModel::QUrlModel(QObject *parent) : QStandardItemModel(parent), showFullPath(false), fileSystemModel(0) +{ +} + +/*! + \reimp +*/ +QStringList QUrlModel::mimeTypes() const +{ + return QStringList(QLatin1String("text/uri-list")); +} + +/*! + \reimp +*/ +Qt::ItemFlags QUrlModel::flags(const QModelIndex &index) const +{ + Qt::ItemFlags flags = QStandardItemModel::flags(index); + if (index.isValid()) { + flags &= ~Qt::ItemIsEditable; + // ### some future version could support "moving" urls onto a folder + flags &= ~Qt::ItemIsDropEnabled; + } + + if (index.data(Qt::DecorationRole).isNull()) + flags &= ~Qt::ItemIsEnabled; + + if (invalidUrls.contains(index.data(UrlRole).toUrl())) + flags &= ~Qt::ItemIsEnabled; + + return flags; +} + +/*! + \reimp +*/ +QMimeData *QUrlModel::mimeData(const QModelIndexList &indexes) const +{ + QList<QUrl> list; + for (int i = 0; i < indexes.count(); ++i) { + if (indexes.at(i).column() == 0) + list.append(indexes.at(i).data(UrlRole).toUrl()); + } + QMimeData *data = new QMimeData(); + data->setUrls(list); + return data; +} + +#ifndef QT_NO_DRAGANDDROP + +/*! + Decide based upon the data if it should be accepted or not + + We only accept dirs and not files +*/ +bool QUrlModel::canDrop(QDragEnterEvent *event) +{ + if (!event->mimeData()->formats().contains(mimeTypes().first())) + return false; + + const QList<QUrl> list = event->mimeData()->urls(); + for (int i = 0; i < list.count(); ++i) { + QModelIndex idx = fileSystemModel->index(list.at(0).toLocalFile()); + if (!fileSystemModel->isDir(idx)) + return false; + } + return true; +} + +/*! + \reimp +*/ +bool QUrlModel::dropMimeData(const QMimeData *data, Qt::DropAction action, + int row, int column, const QModelIndex &parent) +{ + if (!data->formats().contains(mimeTypes().first())) + return false; + Q_UNUSED(action); + Q_UNUSED(column); + Q_UNUSED(parent); + addUrls(data->urls(), row); + return true; +} + +#endif // QT_NO_DRAGANDDROP + +/*! + \reimp + + If the role is the UrlRole then handle otherwise just pass to QStandardItemModel +*/ +bool QUrlModel::setData(const QModelIndex &index, const QVariant &value, int role) +{ + if (value.type() == QVariant::Url) { + QUrl url = value.toUrl(); + QModelIndex dirIndex = fileSystemModel->index(url.toLocalFile()); + //On windows the popup display the "C:\", convert to nativeSeparators + if (showFullPath) + QStandardItemModel::setData(index, QDir::toNativeSeparators(fileSystemModel->data(dirIndex, QFileSystemModel::FilePathRole).toString())); + else { + QStandardItemModel::setData(index, QDir::toNativeSeparators(fileSystemModel->data(dirIndex, QFileSystemModel::FilePathRole).toString()), Qt::ToolTipRole); + QStandardItemModel::setData(index, fileSystemModel->data(dirIndex).toString()); + } + QStandardItemModel::setData(index, fileSystemModel->data(dirIndex, Qt::DecorationRole), + Qt::DecorationRole); + QStandardItemModel::setData(index, url, UrlRole); + return true; + } + return QStandardItemModel::setData(index, value, role); +} + +void QUrlModel::setUrl(const QModelIndex &index, const QUrl &url, const QModelIndex &dirIndex) +{ + setData(index, url, UrlRole); + if (url.path().isEmpty()) { + setData(index, fileSystemModel->myComputer()); + setData(index, fileSystemModel->myComputer(Qt::DecorationRole), Qt::DecorationRole); + } else { + QString newName; + if (showFullPath) { + //On windows the popup display the "C:\", convert to nativeSeparators + newName = QDir::toNativeSeparators(dirIndex.data(QFileSystemModel::FilePathRole).toString()); + } else { + newName = dirIndex.data().toString(); + } + + QIcon newIcon = qvariant_cast<QIcon>(dirIndex.data(Qt::DecorationRole)); + if (!dirIndex.isValid()) { + newIcon = fileSystemModel->iconProvider()->icon(QFileIconProvider::Folder); + newName = QFileInfo(url.toLocalFile()).fileName(); + if (!invalidUrls.contains(url)) + invalidUrls.append(url); + } + + // Make sure that we have at least 32x32 images + const QSize size = newIcon.actualSize(QSize(32,32)); + if (size.width() < 32) { + QPixmap smallPixmap = newIcon.pixmap(QSize(32, 32)); + newIcon.addPixmap(smallPixmap.scaledToWidth(32, Qt::SmoothTransformation)); + } + + if (index.data().toString() != newName) + setData(index, newName); + QIcon oldIcon = qvariant_cast<QIcon>(index.data(Qt::DecorationRole)); + if (oldIcon.cacheKey() != newIcon.cacheKey()) + setData(index, newIcon, Qt::DecorationRole); + } +} + +void QUrlModel::setUrls(const QList<QUrl> &list) +{ + removeRows(0, rowCount()); + invalidUrls.clear(); + watching.clear(); + addUrls(list, 0); +} + +/*! + Add urls \a list into the list at \a row. If move then movie + existing ones to row. + + \sa dropMimeData() +*/ +void QUrlModel::addUrls(const QList<QUrl> &list, int row, bool move) +{ + if (row == -1) + row = rowCount(); + row = qMin(row, rowCount()); + for (int i = list.count() - 1; i >= 0; --i) { + QUrl url = list.at(i); + if (!url.isValid() || url.scheme() != QLatin1String("file")) + continue; + for (int j = 0; move && j < rowCount(); ++j) { + if (index(j, 0).data(UrlRole) == url) { + removeRow(j); + if (j <= row) + row--; + break; + } + } + row = qMax(row, 0); + QModelIndex idx = fileSystemModel->index(url.toLocalFile()); + if (!fileSystemModel->isDir(idx)) + continue; + insertRows(row, 1); + setUrl(index(row, 0), url, idx); + watching.append(QPair<QModelIndex, QString>(idx, url.toLocalFile())); + } +} + +/*! + Return the complete list of urls in a QList. +*/ +QList<QUrl> QUrlModel::urls() const +{ + QList<QUrl> list; + for (int i = 0; i < rowCount(); ++i) + list.append(data(index(i, 0), UrlRole).toUrl()); + return list; +} + +/*! + QFileSystemModel to get index's from, clears existing rows +*/ +void QUrlModel::setFileSystemModel(QFileSystemModel *model) +{ + if (model == fileSystemModel) + return; + if (fileSystemModel != 0) { + disconnect(model, SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)), + this, SLOT(dataChanged(const QModelIndex &, const QModelIndex &))); + disconnect(model, SIGNAL(layoutChanged()), + this, SLOT(layoutChanged())); + disconnect(model, SIGNAL(rowsRemoved(const QModelIndex &, int, int)), + this, SLOT(layoutChanged())); + } + fileSystemModel = model; + if (fileSystemModel != 0) { + connect(model, SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)), + this, SLOT(dataChanged(const QModelIndex &, const QModelIndex &))); + connect(model, SIGNAL(layoutChanged()), + this, SLOT(layoutChanged())); + connect(model, SIGNAL(rowsRemoved(const QModelIndex &, int, int)), + this, SLOT(layoutChanged())); + } + clear(); + insertColumns(0, 1); +} + +/* + If one of the index's we are watching has changed update our internal data +*/ +void QUrlModel::dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight) +{ + QModelIndex parent = topLeft.parent(); + for (int i = 0; i < watching.count(); ++i) { + QModelIndex index = watching.at(i).first; + if (index.model() && topLeft.model()) { + Q_ASSERT(index.model() == topLeft.model()); + } + if ( index.row() >= topLeft.row() + && index.row() <= bottomRight.row() + && index.column() >= topLeft.column() + && index.column() <= bottomRight.column() + && index.parent() == parent) { + changed(watching.at(i).second); + } + } +} + +/*! + Re-get all of our data, anything could have changed! + */ +void QUrlModel::layoutChanged() +{ + QStringList paths; + for (int i = 0; i < watching.count(); ++i) + paths.append(watching.at(i).second); + watching.clear(); + for (int i = 0; i < paths.count(); ++i) { + QString path = paths.at(i); + QModelIndex newIndex = fileSystemModel->index(path); + watching.append(QPair<QModelIndex, QString>(newIndex, path)); + if (newIndex.isValid()) + changed(path); + } +} + +/*! + The following path changed data update our copy of that data + + \sa layoutChanged() dataChanged() +*/ +void QUrlModel::changed(const QString &path) +{ + for (int i = 0; i < rowCount(); ++i) { + QModelIndex idx = index(i, 0); + if (idx.data(UrlRole).toUrl().toLocalFile() == path) { + setData(idx, idx.data(UrlRole).toUrl()); + } + } +} + +QSidebar::QSidebar(QWidget *parent) : QListView(parent) +{ +} + +void QSidebar::init(QFileSystemModel *model, const QList<QUrl> &newUrls) +{ + // ### TODO make icon size dynamic + setIconSize(QSize(24,24)); + setUniformItemSizes(true); + urlModel = new QUrlModel(this); + urlModel->setFileSystemModel(model); + setModel(urlModel); + + connect(selectionModel(), SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)), + this, SLOT(clicked(const QModelIndex &))); +#ifndef QT_NO_DRAGANDDROP + setDragDropMode(QAbstractItemView::DragDrop); +#endif + setContextMenuPolicy(Qt::CustomContextMenu); + connect(this, SIGNAL(customContextMenuRequested(const QPoint &)), + this, SLOT(showContextMenu(const QPoint &))); + urlModel->setUrls(newUrls); + setCurrentIndex(this->model()->index(0,0)); +} + +QSidebar::~QSidebar() +{ +} + +#ifndef QT_NO_DRAGANDDROP +void QSidebar::dragEnterEvent(QDragEnterEvent *event) +{ + if (urlModel->canDrop(event)) + QListView::dragEnterEvent(event); +} +#endif // QT_NO_DRAGANDDROP + +QSize QSidebar::sizeHint() const +{ + if (model()) + return QListView::sizeHintForIndex(model()->index(0, 0)) + QSize(2 * frameWidth(), 2 * frameWidth()); + return QListView::sizeHint(); +} + +void QSidebar::selectUrl(const QUrl &url) +{ + disconnect(selectionModel(), SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)), + this, SLOT(clicked(const QModelIndex &))); + + selectionModel()->clear(); + for (int i = 0; i < model()->rowCount(); ++i) { + if (model()->index(i, 0).data(QUrlModel::UrlRole).toUrl() == url) { + selectionModel()->select(model()->index(i, 0), QItemSelectionModel::Select); + break; + } + } + + connect(selectionModel(), SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)), + this, SLOT(clicked(const QModelIndex &))); +} + +#ifndef QT_NO_MENU +/*! + \internal + + \sa removeEntry() +*/ +void QSidebar::showContextMenu(const QPoint &position) +{ + QList<QAction *> actions; + if (indexAt(position).isValid()) { + QAction *action = new QAction(QFileDialog::tr("Remove"), this); + if (indexAt(position).data(QUrlModel::UrlRole).toUrl().path().isEmpty()) + action->setEnabled(false); + connect(action, SIGNAL(triggered()), this, SLOT(removeEntry())); + actions.append(action); + } + if (actions.count() > 0) + QMenu::exec(actions, mapToGlobal(position)); +} +#endif // QT_NO_MENU + +/*! + \internal + + \sa showContextMenu() +*/ +void QSidebar::removeEntry() +{ + QList<QModelIndex> idxs = selectionModel()->selectedIndexes(); + QList<QPersistentModelIndex> indexes; + for (int i = 0; i < idxs.count(); i++) + indexes.append(idxs.at(i)); + + for (int i = 0; i < indexes.count(); ++i) + if (!indexes.at(i).data(QUrlModel::UrlRole).toUrl().path().isEmpty()) + model()->removeRow(indexes.at(i).row()); +} + +/*! + \internal + + \sa goToUrl() +*/ +void QSidebar::clicked(const QModelIndex &index) +{ + QUrl url = model()->index(index.row(), 0).data(QUrlModel::UrlRole).toUrl(); + emit goToUrl(url); + selectUrl(url); +} + +/*! + \reimp + Don't automatically select something + */ +void QSidebar::focusInEvent(QFocusEvent *event) +{ + QAbstractScrollArea::focusInEvent(event); + viewport()->update(); +} + +/*! + \reimp + */ +bool QSidebar::event(QEvent * event) +{ + if (event->type() == QEvent::KeyRelease) { + QKeyEvent* ke = (QKeyEvent*) event; + if (ke->key() == Qt::Key_Delete) { + removeEntry(); + return true; + } + } + return QListView::event(event); +} + +QT_END_NAMESPACE + +#endif |