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 bool FoldersPanel::urlChanged()
 107 {
 108     if (!url().isValid() || url().protocol().contains("search")) {
 109         // Skip results shown by a search, as possible identical
 110         // directory names are useless without parent-path information.
 111         return false;
 112     }
 113
 114     if (m_dirLister != 0) {
 115         m_setLeafVisible = true;
 116         loadTree(url());
 117     }
 118
 119     return true;
 120 }
 121
 122 void FoldersPanel::showEvent(QShowEvent* event)
 123 {
 124     if (event->spontaneous()) {
 125         Panel::showEvent(event);
 126         return;
 127     }
 128
 129     if (m_dirLister == 0) {
 130         // Postpone the creating of the dir lister to the first show event.
 131         // This assures that no performance and memory overhead is given when the TreeView is not
 132         // used at all (see FoldersPanel::setUrl()).
 133         m_dirLister = new KDirLister();
 134         m_dirLister->setDirOnlyMode(true);
 135         m_dirLister->setAutoUpdate(true);
 136         m_dirLister->setMainWindow(window());
 137         m_dirLister->setDelayedMimeTypes(true);
 138         m_dirLister->setAutoErrorHandlingEnabled(false, this);
 139         m_dirLister->setShowingDotFiles(FoldersPanelSettings::showHiddenFiles());
 140
 141         Q_ASSERT(m_dolphinModel == 0);
 142         m_dolphinModel = new DolphinModel(this);
 143         m_dolphinModel->setDirLister(m_dirLister);
 144         m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 145         connect(m_dolphinModel, SIGNAL(expand(const QModelIndex&)),
 146                 this, SLOT(expandToDir(const QModelIndex&)));
 147
 148         Q_ASSERT(m_proxyModel == 0);
 149         m_proxyModel = new DolphinSortFilterProxyModel(this);
 150         m_proxyModel->setSourceModel(m_dolphinModel);
 151
 152         Q_ASSERT(m_treeView == 0);
 153         m_treeView = new PanelTreeView(this);
 154         m_treeView->setModel(m_proxyModel);
 155         m_proxyModel->setSorting(DolphinView::SortByName);
 156         m_proxyModel->setSortOrder(Qt::AscendingOrder);
 157
 158         new FolderExpander(m_treeView, m_proxyModel);
 159
 160         connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
 161                 this, SLOT(updateActiveView(const QModelIndex&)));
 162         connect(m_treeView, SIGNAL(urlsDropped(const QModelIndex&, QDropEvent*)),
 163                 this, SLOT(dropUrls(const QModelIndex&, QDropEvent*)));
 164         connect(m_treeView, SIGNAL(pressed(const QModelIndex&)),
 165                 this, SLOT(updateMouseButtons()));
 166
 167         QVBoxLayout* layout = new QVBoxLayout(this);
 168         layout->setMargin(0);
 169         layout->addWidget(m_treeView);
 170     }
 171
 172     loadTree(url());
 173     Panel::showEvent(event);
 174 }
 175
 176 void FoldersPanel::contextMenuEvent(QContextMenuEvent* event)
 177 {
 178     Panel::contextMenuEvent(event);
 179
 180     KFileItem item;
 181     const QModelIndex index = m_treeView->indexAt(event->pos());
 182     if (index.isValid()) {
 183         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 184         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 185     }
 186
 187     TreeViewContextMenu contextMenu(this, item);
 188     contextMenu.open();
 189 }
 190
 191 void FoldersPanel::keyPressEvent(QKeyEvent* event)
 192 {
 193     const int key = event->key();
 194     if ((key == Qt::Key_Enter) || (key == Qt::Key_Return)) {
 195         event->accept();
 196         updateActiveView(m_treeView->currentIndex());
 197     } else {
 198         Panel::keyPressEvent(event);
 199     }
 200 }
 201
 202 void FoldersPanel::updateActiveView(const QModelIndex& index)
 203 {
 204     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 205     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 206     if (!item.isNull()) {
 207         emit changeUrl(item.url(), m_mouseButtons);
 208     }
 209 }
 210
 211 void FoldersPanel::dropUrls(const QModelIndex& index, QDropEvent* event)
 212 {
 213     if (index.isValid()) {
 214         const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 215         KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 216         Q_ASSERT(!item.isNull());
 217         if (item.isDir()) {
 218             DragAndDropHelper::instance().dropUrls(item, item.url(), event, this);
 219         }
 220     }
 221 }
 222
 223 void FoldersPanel::expandToDir(const QModelIndex& index)
 224 {
 225     m_treeView->setExpanded(index, true);
 226     selectLeafDirectory();
 227     m_treeView->resizeColumnToContents(DolphinModel::Name);
 228 }
 229
 230 void FoldersPanel::scrollToLeaf()
 231 {
 232     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 233     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 234     if (proxyIndex.isValid()) {
 235         m_treeView->scrollTo(proxyIndex);
 236     }
 237 }
 238
 239 void FoldersPanel::updateMouseButtons()
 240 {
 241     m_mouseButtons = QApplication::mouseButtons();
 242 }
 243
 244 void FoldersPanel::loadTree(const KUrl& url)
 245 {
 246     Q_ASSERT(m_dirLister != 0);
 247     m_leafDir = url;
 248
 249     KUrl baseUrl;
 250     if (url.isLocalFile()) {
 251         // use the root directory as base for local URLs (#150941)
 252         baseUrl = QDir::rootPath();
 253     } else {
 254         // clear the path for non-local URLs and use it as base
 255         baseUrl = url;
 256         baseUrl.setPath(QString('/'));
 257     }
 258
 259     if (m_dirLister->url() != baseUrl) {
 260         m_dirLister->stop();
 261         m_dirLister->openUrl(baseUrl, KDirLister::Reload);
 262     }
 263     m_dolphinModel->expandToUrl(m_leafDir);
 264 }
 265
 266 void FoldersPanel::selectLeafDirectory()
 267 {
 268     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 269     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 270     if (!proxyIndex.isValid()) {
 271         return;
 272     }
 273
 274     if (m_setLeafVisible) {
 275         // Invoke m_treeView->scrollTo(proxyIndex) asynchronously by
 276         // scrollToLeaf(). This assures that the scrolling is done after
 277         // the horizontal scrollbar gets visible (otherwise the scrollbar
 278         // might hide the leaf).
 279         QTimer::singleShot(100, this, SLOT(scrollToLeaf()));
 280         m_setLeafVisible = false;
 281     }
 282
 283     QItemSelectionModel* selModel = m_treeView->selectionModel();
 284     selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::ClearAndSelect);
 285 }
 286
 287 #include "folderspanel.moc"