apps/dolphin/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 "dolphinmodel.h"
  23 #include "dolphinsortfilterproxymodel.h"
  24 #include "dolphinview.h"
  25 #include "settings/dolphinsettings.h"
  26 #include "dolphin_folderspanelsettings.h"
  27 #include "dolphin_generalsettings.h"
  28 #include "draganddrophelper.h"
  29 #include "folderexpander.h"
  30 #include "renamedialog.h"
  31 #include "paneltreeview.h"
  32 #include "treeviewcontextmenu.h"
  33
  34 #include <kfileplacesmodel.h>
  35 #include <kdirlister.h>
  36 #include <kfileitem.h>
  37 #include <konq_operations.h>
  38
  39 #include <QApplication>
  40 #include <QItemSelection>
  41 #include <QTreeView>
  42 #include <QBoxLayout>
  43 #include <QModelIndex>
  44 #include <QScrollBar>
  45 #include <QTimer>
  46
  47 FoldersPanel::FoldersPanel(QWidget* parent) :
  48     Panel(parent),
  49     m_setLeafVisible(false),
  50     m_mouseButtons(Qt::NoButton),
  51     m_dirLister(0),
  52     m_dolphinModel(0),
  53     m_proxyModel(0),
  54     m_treeView(0),
  55     m_leafDir()
  56 {
  57     setLayoutDirection(Qt::LeftToRight);
  58 }
  59
  60 FoldersPanel::~FoldersPanel()
  61 {
  62     FoldersPanelSettings::self()->writeConfig();
  63
  64     delete m_proxyModel;
  65     m_proxyModel = 0;
  66     delete m_dolphinModel;
  67     m_dolphinModel = 0;
  68     m_dirLister = 0; // deleted by m_dolphinModel
  69 }
  70
  71 QSize FoldersPanel::sizeHint() const
  72 {
  73     return QSize(200, 400);
  74 }
  75
  76 void FoldersPanel::setShowHiddenFiles(bool show)
  77 {
  78     FoldersPanelSettings::setShowHiddenFiles(show);
  79     if (m_dirLister != 0) {
  80         m_dirLister->setShowingDotFiles(show);
  81         m_dirLister->openUrl(m_dirLister->url(), KDirLister::Reload);
  82     }
  83 }
  84
  85 bool FoldersPanel::showHiddenFiles() const
  86 {
  87     return FoldersPanelSettings::showHiddenFiles();
  88 }
  89
  90 void FoldersPanel::rename(const KFileItem& item)
  91 {
  92     if (DolphinSettings::instance().generalSettings()->renameInline()) {
  93         const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
  94         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
  95         m_treeView->edit(proxyIndex);
  96     } else {
  97         KFileItemList items;
  98         items.append(item);
  99         RenameDialog dialog(this, items);
 100         if (dialog.exec() == QDialog::Accepted) {
 101             const QString& newName = dialog.newName();
 102             if (!newName.isEmpty()) {
 103                 KUrl newUrl = item.url();
 104                 newUrl.setFileName(newName);
 105                 KonqOperations::rename(this, item.url(), newUrl);
 106             }
 107         }
 108     }
 109 }
 110
 111 void FoldersPanel::setUrl(const KUrl& url)
 112 {
 113     if (!url.isValid() || (url == Panel::url())) {
 114         return;
 115     }
 116
 117     Panel::setUrl(url);
 118     if (m_dirLister != 0) {
 119         m_setLeafVisible = true;
 120         loadTree(url);
 121     }
 122 }
 123
 124 void FoldersPanel::showEvent(QShowEvent* event)
 125 {
 126     if (event->spontaneous()) {
 127         Panel::showEvent(event);
 128         return;
 129     }
 130
 131     if (m_dirLister == 0) {
 132         // Postpone the creating of the dir lister to the first show event.
 133         // This assures that no performance and memory overhead is given when the TreeView is not
 134         // used at all (see FoldersPanel::setUrl()).
 135         m_dirLister = new KDirLister();
 136         m_dirLister->setDirOnlyMode(true);
 137         m_dirLister->setAutoUpdate(true);
 138         m_dirLister->setMainWindow(window());
 139         m_dirLister->setDelayedMimeTypes(true);
 140         m_dirLister->setAutoErrorHandlingEnabled(false, this);
 141         m_dirLister->setShowingDotFiles(FoldersPanelSettings::showHiddenFiles());
 142
 143         Q_ASSERT(m_dolphinModel == 0);
 144         m_dolphinModel = new DolphinModel(this);
 145         m_dolphinModel->setDirLister(m_dirLister);
 146         m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 147         connect(m_dolphinModel, SIGNAL(expand(const QModelIndex&)),
 148                 this, SLOT(expandToDir(const QModelIndex&)));
 149
 150         Q_ASSERT(m_proxyModel == 0);
 151         m_proxyModel = new DolphinSortFilterProxyModel(this);
 152         m_proxyModel->setSourceModel(m_dolphinModel);
 153
 154         Q_ASSERT(m_treeView == 0);
 155         m_treeView = new PanelTreeView(this);
 156         m_treeView->setModel(m_proxyModel);
 157         m_proxyModel->setSorting(DolphinView::SortByName);
 158         m_proxyModel->setSortOrder(Qt::AscendingOrder);
 159
 160         new FolderExpander(m_treeView, m_proxyModel);
 161
 162         connect(m_treeView, SIGNAL(activated(const QModelIndex&)),
 163                 this, SLOT(updateActiveView(const QModelIndex&)));
 164         connect(m_treeView, SIGNAL(urlsDropped(const QModelIndex&, QDropEvent*)),
 165                 this, SLOT(dropUrls(const QModelIndex&, QDropEvent*)));
 166         connect(m_treeView, SIGNAL(pressed(const QModelIndex&)),
 167                 this, SLOT(updateMouseButtons()));
 168
 169         QVBoxLayout* layout = new QVBoxLayout(this);
 170         layout->setMargin(0);
 171         layout->addWidget(m_treeView);
 172     }
 173
 174     loadTree(url());
 175     Panel::showEvent(event);
 176 }
 177
 178 void FoldersPanel::contextMenuEvent(QContextMenuEvent* event)
 179 {
 180     Panel::contextMenuEvent(event);
 181
 182     KFileItem item;
 183     const QModelIndex index = m_treeView->indexAt(event->pos());
 184     if (index.isValid()) {
 185         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 186         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 187         emit changeSelection(KFileItemList());
 188     }
 189
 190     TreeViewContextMenu contextMenu(this, item);
 191     contextMenu.open();
 192 }
 193
 194 void FoldersPanel::updateActiveView(const QModelIndex& index)
 195 {
 196     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 197     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 198     if (!item.isNull()) {
 199         emit changeUrl(item.url(), m_mouseButtons);
 200     }
 201 }
 202
 203 void FoldersPanel::dropUrls(const QModelIndex& index, QDropEvent* event)
 204 {
 205     if (index.isValid()) {
 206         const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 207         KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 208         Q_ASSERT(!item.isNull());
 209         if (item.isDir()) {
 210             DragAndDropHelper::instance().dropUrls(item, item.url(), event, this);
 211         }
 212     }
 213 }
 214
 215 void FoldersPanel::expandToDir(const QModelIndex& index)
 216 {
 217     m_treeView->setExpanded(index, true);
 218     selectLeafDirectory();
 219     m_treeView->resizeColumnToContents(DolphinModel::Name);
 220 }
 221
 222 void FoldersPanel::scrollToLeaf()
 223 {
 224     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 225     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 226     if (proxyIndex.isValid()) {
 227         m_treeView->scrollTo(proxyIndex);
 228     }
 229 }
 230
 231 void FoldersPanel::updateMouseButtons()
 232 {
 233     m_mouseButtons = QApplication::mouseButtons();
 234 }
 235
 236 void FoldersPanel::loadTree(const KUrl& url)
 237 {
 238     Q_ASSERT(m_dirLister != 0);
 239     m_leafDir = url;
 240
 241     KUrl baseUrl;
 242     if (url.isLocalFile()) {
 243         // use the root directory as base for local URLs (#150941)
 244         baseUrl = QDir::rootPath();
 245     } else {
 246         // clear the path for non-local URLs and use it as base
 247         baseUrl = url;
 248         baseUrl.setPath(QString('/'));
 249     }
 250
 251     if (m_dirLister->url() != baseUrl) {
 252         m_dirLister->stop();
 253         m_dirLister->openUrl(baseUrl, KDirLister::Reload);
 254     }
 255     m_dolphinModel->expandToUrl(m_leafDir);
 256 }
 257
 258 void FoldersPanel::selectLeafDirectory()
 259 {
 260     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 261     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 262     if (!proxyIndex.isValid()) {
 263         return;
 264     }
 265
 266     if (m_setLeafVisible) {
 267         // Invoke m_treeView->scrollTo(proxyIndex) asynchronously by
 268         // scrollToLeaf(). This assures that the scrolling is done after
 269         // the horizontal scrollbar gets visible (otherwise the scrollbar
 270         // might hide the leaf).
 271         QTimer::singleShot(100, this, SLOT(scrollToLeaf()));
 272         m_setLeafVisible = false;
 273     }
 274
 275     QItemSelectionModel* selModel = m_treeView->selectionModel();
 276     selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::ClearAndSelect);
 277 }
 278
 279 #include "folderspanel.moc"