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KFile

kfiletreeview.cpp

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00001 /*
00002    This file is part of the KDE project
00003 
00004    Copyright (C) 2007 Tobias Koenig <tokoe@kde.org>
00005 
00006    This library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Library General Public
00008    License as published by the Free Software Foundation; either
00009    version 2 of the License, or (at your option) any later version.
00010 
00011    This library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Library General Public License for more details.
00015 
00016    You should have received a copy of the GNU Library General Public License
00017    along with this library; see the file COPYING.LIB.  If not, write to
00018    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019    Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #include "kfiletreeview.h"
00023 
00024 #include <QtCore/QDir>
00025 #include <QtGui/QContextMenuEvent>
00026 #include <QtGui/QMenu>
00027 
00028 #include <kdirlister.h>
00029 #include <kdirmodel.h>
00030 #include <kdirsortfilterproxymodel.h>
00031 #include <kfileitemdelegate.h>
00032 #include <klocale.h>
00033 #include <ktoggleaction.h>
00034 #include <kurl.h>
00035 
00036 class KFileTreeView::Private
00037 {
00038     public:
00039         Private(KFileTreeView *parent)
00040             : q(parent)
00041         {
00042         }
00043 
00044         KUrl urlForProxyIndex(const QModelIndex &index) const;
00045 
00046         void _k_activated(const QModelIndex&);
00047         void _k_currentChanged(const QModelIndex&, const QModelIndex&);
00048         void _k_expanded(const QModelIndex&);
00049 
00050         KFileTreeView *q;
00051         KDirModel *mSourceModel;
00052         KDirSortFilterProxyModel *mProxyModel;
00053 };
00054 
00055 KUrl KFileTreeView::Private::urlForProxyIndex(const QModelIndex &index) const
00056 {
00057     const KFileItem item = mSourceModel->itemForIndex(mProxyModel->mapToSource(index));
00058 
00059     return !item.isNull() ? item.url() : KUrl();
00060 }
00061 
00062 void KFileTreeView::Private::_k_activated(const QModelIndex &index)
00063 {
00064     const KUrl url = urlForProxyIndex(index);
00065     if (url.isValid())
00066         emit q->activated(url);
00067 }
00068 
00069 void KFileTreeView::Private::_k_currentChanged(const QModelIndex &currentIndex, const QModelIndex&)
00070 {
00071     const KUrl url = urlForProxyIndex(currentIndex);
00072     if (url.isValid())
00073         emit q->currentChanged(url);
00074 }
00075 
00076 void KFileTreeView::Private::_k_expanded(const QModelIndex &baseIndex)
00077 {
00078     QModelIndex index = mProxyModel->mapFromSource(baseIndex);
00079 
00080     q->selectionModel()->clearSelection();
00081     q->selectionModel()->setCurrentIndex(index, QItemSelectionModel::SelectCurrent);
00082     q->scrollTo(index);
00083 }
00084 
00085 KFileTreeView::KFileTreeView(QWidget *parent)
00086     : QTreeView(parent), d(new Private(this))
00087 {
00088     d->mSourceModel = new KDirModel(this);
00089     d->mProxyModel = new KDirSortFilterProxyModel(this);
00090     d->mProxyModel->setSourceModel(d->mSourceModel);
00091 
00092     setModel(d->mProxyModel);
00093     setItemDelegate(new KFileItemDelegate(this));
00094     setLayoutDirection(Qt::LeftToRight);
00095 
00096     d->mSourceModel->dirLister()->openUrl(KUrl(QDir::root().absolutePath()), KDirLister::Keep);
00097 
00098     connect(this, SIGNAL(activated(const QModelIndex&)),
00099             this, SLOT(_k_activated(const QModelIndex&)));
00100     connect(selectionModel(), SIGNAL(currentChanged(const QModelIndex&, const QModelIndex&)),
00101             this, SLOT(_k_currentChanged(const QModelIndex&, const QModelIndex&)));
00102 
00103     connect(d->mSourceModel, SIGNAL(expand(const QModelIndex&)),
00104             this, SLOT(_k_expanded(const QModelIndex&)));
00105 }
00106 
00107 KFileTreeView::~KFileTreeView()
00108 {
00109     delete d;
00110 }
00111 
00112 KUrl KFileTreeView::currentUrl() const
00113 {
00114     return d->urlForProxyIndex(currentIndex());
00115 }
00116 
00117 KUrl KFileTreeView::selectedUrl() const
00118 {
00119     if (!selectionModel()->hasSelection())
00120         return KUrl();
00121 
00122     const QItemSelection selection = selectionModel()->selection();
00123     const QModelIndex firstIndex = selection.indexes().first();
00124 
00125     return d->urlForProxyIndex(firstIndex);
00126 }
00127 
00128 KUrl::List KFileTreeView::selectedUrls() const
00129 {
00130     KUrl::List urls;
00131 
00132     if (!selectionModel()->hasSelection())
00133         return urls;
00134 
00135     const QModelIndexList indexes = selectionModel()->selection().indexes();
00136     foreach (const QModelIndex &index, indexes) {
00137         const KUrl url = d->urlForProxyIndex(index);
00138         if (url.isValid())
00139             urls.append(url);
00140     }
00141 
00142     return urls;
00143 }
00144 
00145 KUrl KFileTreeView::rootUrl() const
00146 {
00147     return d->mSourceModel->dirLister()->url();
00148 }
00149 
00150 void KFileTreeView::setDirOnlyMode(bool enabled)
00151 {
00152     d->mSourceModel->dirLister()->setDirOnlyMode(enabled);
00153     d->mSourceModel->dirLister()->openUrl(d->mSourceModel->dirLister()->url());
00154 }
00155 
00156 void KFileTreeView::setShowHiddenFiles(bool enabled)
00157 {
00158     KUrl url = currentUrl();
00159     d->mSourceModel->dirLister()->setShowingDotFiles(enabled);
00160     d->mSourceModel->dirLister()->openUrl(d->mSourceModel->dirLister()->url());
00161     setCurrentUrl(url);
00162 }
00163 
00164 void KFileTreeView::setCurrentUrl(const KUrl &url)
00165 {
00166     QModelIndex baseIndex = d->mSourceModel->indexForUrl(url);
00167 
00168     if (!baseIndex.isValid()) {
00169         d->mSourceModel->expandToUrl(url);
00170         return;
00171     }
00172 
00173     QModelIndex proxyIndex = d->mProxyModel->mapFromSource(baseIndex);
00174     selectionModel()->clearSelection();
00175     selectionModel()->setCurrentIndex(proxyIndex, QItemSelectionModel::SelectCurrent);
00176     scrollTo(proxyIndex);
00177 }
00178 
00179 void KFileTreeView::setRootUrl(const KUrl &url)
00180 {
00181     d->mSourceModel->dirLister()->openUrl(url);
00182 }
00183 
00184 void KFileTreeView::contextMenuEvent(QContextMenuEvent *event)
00185 {
00186     QMenu menu;
00187     KToggleAction *showHiddenAction = new KToggleAction(i18n("Show Hidden Folders"), &menu);
00188     showHiddenAction->setChecked(d->mSourceModel->dirLister()->showingDotFiles());
00189     connect(showHiddenAction, SIGNAL(toggled(bool)), this, SLOT(setShowHiddenFiles(bool)));
00190 
00191     menu.addAction(showHiddenAction);
00192     menu.exec(event->globalPos());
00193 }
00194 
00195 bool KFileTreeView::showHiddenFiles() const
00196 {
00197     return d->mSourceModel->dirLister()->showingDotFiles();
00198 }
00199 
00200 #include "kfiletreeview.moc"

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