src/panels/folders/folderspanel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "folderspanel.h"
  21
  22 #include "settings/dolphinsettings.h"
  23 #include "dolphin_folderspanelsettings.h"
  24 #include "dolphin_generalsettings.h"
  25 #include "paneltreeview.h"
  26 #include "treeviewcontextmenu.h"
  27
  28 #include <kfileplacesmodel.h>
  29 #include <kdirlister.h>
  30 #include <kfileitem.h>
  31 #include <konq_operations.h>
  32
  33 #include <QApplication>
  34 #include <QItemSelection>
  35 #include <QTreeView>
  36 #include <QBoxLayout>
  37 #include <QModelIndex>
  38 #include <QScrollBar>
  39 #include <QTimer>
  40
  41 #include <views/draganddrophelper.h>
  42 #include <views/dolphinmodel.h>
  43 #include <views/dolphinsortfilterproxymodel.h>
  44 #include <views/dolphinview.h>
  45 #include <views/folderexpander.h>
  46 #include <views/renamedialog.h>
  47
  48 FoldersPanel::FoldersPanel(QWidget* parent) :
  49     Panel(parent),
  50     m_setLeafVisible(false),
  51     m_mouseButtons(Qt::NoButton),
  52     m_dirLister(0),
  53     m_dolphinModel(0),
  54     m_proxyModel(0),
  55     m_treeView(0),
  56     m_leafDir()
  57 {
  58     setLayoutDirection(Qt::LeftToRight);
  59 }
  60
  61 FoldersPanel::~FoldersPanel()
  62 {
  63     FoldersPanelSettings::self()->writeConfig();
  64
  65     delete m_proxyModel;
  66     m_proxyModel = 0;
  67     delete m_dolphinModel;
  68     m_dolphinModel = 0;
  69     m_dirLister = 0; // deleted by m_dolphinModel
  70 }
  71
  72 QSize FoldersPanel::sizeHint() const
  73 {
  74     return QSize(200, 400);
  75 }
  76
  77 void FoldersPanel::setShowHiddenFiles(bool show)
  78 {
  79     FoldersPanelSettings::setShowHiddenFiles(show);
  80     if (m_dirLister != 0) {
  81         m_dirLister->setShowingDotFiles(show);
  82         m_dirLister->openUrl(m_dirLister->url(), KDirLister::Reload);
  83     }
  84 }
  85
  86 bool FoldersPanel::showHiddenFiles() const
  87 {
  88     return FoldersPanelSettings::showHiddenFiles();
  89 }
  90
  91 void FoldersPanel::rename(const KFileItem& item)
  92 {
  93     if (DolphinSettings::instance().generalSettings()->renameInline()) {
  94         const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
  95         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
  96         m_treeView->edit(proxyIndex);
  97     } else {
  98         RenameDialog* dialog = new RenameDialog(this, KFileItemList() << item);
  99         dialog->setAttribute(Qt::WA_DeleteOnClose);
 100         dialog->show();
 101         dialog->raise();
 102         dialog->activateWindow();
 103     }
 104 }
 105
 106 void FoldersPanel::setUrl(const KUrl& url)
 107 {
 108     if (!url.isValid() || (url == Panel::url())) {
 109         return;
 110     }
 111
 112     Panel::setUrl(url);
 113     if (m_dirLister != 0) {
 114         m_setLeafVisible = true;
 115         loadTree(url);
 116     }
 117 }
 118
 119 void FoldersPanel::showEvent(QShowEvent* event)
 120 {
 121     if (event->spontaneous()) {
 122         Panel::showEvent(event);
 123         return;
 124     }
 125
 126     if (m_dirLister == 0) {
 127         // Postpone the creating of the dir lister to the first show event.
 128         // This assures that no performance and memory overhead is given when the TreeView is not
 129         // used at all (see FoldersPanel::setUrl()).
 130         m_dirLister = new KDirLister();
 131         m_dirLister->setDirOnlyMode(true);
 132         m_dirLister->setAutoUpdate(true);
 133         m_dirLister->setMainWindow(window());
 134         m_dirLister->setDelayedMimeTypes(true);
 135         m_dirLister->setAutoErrorHandlingEnabled(false, this);
 136         m_dirLister->setShowingDotFiles(FoldersPanelSettings::showHiddenFiles());
 137
 138         Q_ASSERT(m_dolphinModel == 0);
 139         m_dolphinModel = new DolphinModel(this);
 140         m_dolphinModel->setDirLister(m_dirLister);
 141         m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 142         connect(m_dolphinModel, SIGNAL(expand(const QModelIndex&)),
 143                 this, SLOT(expandToDir(const QModelIndex&)));
 144
 145         Q_ASSERT(m_proxyModel == 0);
 146         m_proxyModel = new DolphinSortFilterProxyModel(this);
 147         m_proxyModel->setSourceModel(m_dolphinModel);
 148
 149         Q_ASSERT(m_treeView == 0);
 150         m_treeView = new PanelTreeView(this);
 151         m_treeView->setModel(m_proxyModel);
 152         m_proxyModel->setSorting(DolphinView::SortByName);
 153         m_proxyModel->setSortOrder(Qt::AscendingOrder);
 154
 155         new FolderExpander(m_treeView, m_proxyModel);
 156
 157         connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
 158                 this, SLOT(updateActiveView(const QModelIndex&)));
 159         connect(m_treeView, SIGNAL(urlsDropped(const QModelIndex&, QDropEvent*)),
 160                 this, SLOT(dropUrls(const QModelIndex&, QDropEvent*)));
 161         connect(m_treeView, SIGNAL(pressed(const QModelIndex&)),
 162                 this, SLOT(updateMouseButtons()));
 163
 164         QVBoxLayout* layout = new QVBoxLayout(this);
 165         layout->setMargin(0);
 166         layout->addWidget(m_treeView);
 167     }
 168
 169     loadTree(url());
 170     Panel::showEvent(event);
 171 }
 172
 173 void FoldersPanel::contextMenuEvent(QContextMenuEvent* event)
 174 {
 175     Panel::contextMenuEvent(event);
 176
 177     KFileItem item;
 178     const QModelIndex index = m_treeView->indexAt(event->pos());
 179     if (index.isValid()) {
 180         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 181         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 182     }
 183
 184     TreeViewContextMenu contextMenu(this, item);
 185     contextMenu.open();
 186 }
 187
 188 void FoldersPanel::keyPressEvent(QKeyEvent* event)
 189 {
 190     const int key = event->key();
 191     if ((key == Qt::Key_Enter) || (key == Qt::Key_Return)) {
 192         event->accept();
 193         updateActiveView(m_treeView->currentIndex());
 194     } else {
 195         Panel::keyPressEvent(event);
 196     }
 197 }
 198
 199 void FoldersPanel::updateActiveView(const QModelIndex& index)
 200 {
 201     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 202     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 203     if (!item.isNull()) {
 204         emit changeUrl(item.url(), m_mouseButtons);
 205     }
 206 }
 207
 208 void FoldersPanel::dropUrls(const QModelIndex& index, QDropEvent* event)
 209 {
 210     if (index.isValid()) {
 211         const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 212         KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 213         Q_ASSERT(!item.isNull());
 214         if (item.isDir()) {
 215             DragAndDropHelper::instance().dropUrls(item, item.url(), event, this);
 216         }
 217     }
 218 }
 219
 220 void FoldersPanel::expandToDir(const QModelIndex& index)
 221 {
 222     m_treeView->setExpanded(index, true);
 223     selectLeafDirectory();
 224     m_treeView->resizeColumnToContents(DolphinModel::Name);
 225 }
 226
 227 void FoldersPanel::scrollToLeaf()
 228 {
 229     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 230     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 231     if (proxyIndex.isValid()) {
 232         m_treeView->scrollTo(proxyIndex);
 233     }
 234 }
 235
 236 void FoldersPanel::updateMouseButtons()
 237 {
 238     m_mouseButtons = QApplication::mouseButtons();
 239 }
 240
 241 void FoldersPanel::loadTree(const KUrl& url)
 242 {
 243     Q_ASSERT(m_dirLister != 0);
 244     m_leafDir = url;
 245
 246     KUrl baseUrl;
 247     if (url.isLocalFile()) {
 248         // use the root directory as base for local URLs (#150941)
 249         baseUrl = QDir::rootPath();
 250     } else {
 251         // clear the path for non-local URLs and use it as base
 252         baseUrl = url;
 253         baseUrl.setPath(QString('/'));
 254     }
 255
 256     if (m_dirLister->url() != baseUrl) {
 257         m_dirLister->stop();
 258         m_dirLister->openUrl(baseUrl, KDirLister::Reload);
 259     }
 260     m_dolphinModel->expandToUrl(m_leafDir);
 261 }
 262
 263 void FoldersPanel::selectLeafDirectory()
 264 {
 265     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 266     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 267     if (!proxyIndex.isValid()) {
 268         return;
 269     }
 270
 271     if (m_setLeafVisible) {
 272         // Invoke m_treeView->scrollTo(proxyIndex) asynchronously by
 273         // scrollToLeaf(). This assures that the scrolling is done after
 274         // the horizontal scrollbar gets visible (otherwise the scrollbar
 275         // might hide the leaf).
 276         QTimer::singleShot(100, this, SLOT(scrollToLeaf()));
 277         m_setLeafVisible = false;
 278     }
 279
 280     QItemSelectionModel* selModel = m_treeView->selectionModel();
 281     selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::ClearAndSelect);
 282 }
 283
 284 #include "folderspanel.moc"