src/panels/folders/folderspanel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006-2010 by Peter Penz <peter.penz19@gmail.com>        *
   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>
  29 #include <KDirLister>
  30 #include <KFileItem>
  31 #include <konq_operations.h>
  32
  33 #include <QApplication>
  34 #include <QBoxLayout>
  35 #include <QItemSelection>
  36 #include <QModelIndex>
  37 #include <QPointer>
  38 #include <QTreeView>
  39 #include <QScrollBar>
  40 #include <QTimer>
  41
  42 #include <views/draganddrophelper.h>
  43 #include <views/dolphinmodel.h>
  44 #include <views/dolphinsortfilterproxymodel.h>
  45 #include <views/dolphinview.h>
  46 #include <views/folderexpander.h>
  47 #include <views/renamedialog.h>
  48
  49 FoldersPanel::FoldersPanel(QWidget* parent) :
  50     Panel(parent),
  51     m_setLeafVisible(false),
  52     m_mouseButtons(Qt::NoButton),
  53     m_dirLister(0),
  54     m_dolphinModel(0),
  55     m_proxyModel(0),
  56     m_treeView(0),
  57     m_leafDir()
  58 {
  59     setLayoutDirection(Qt::LeftToRight);
  60 }
  61
  62 FoldersPanel::~FoldersPanel()
  63 {
  64     FoldersPanelSettings::self()->writeConfig();
  65
  66     delete m_proxyModel;
  67     m_proxyModel = 0;
  68     delete m_dolphinModel;
  69     m_dolphinModel = 0;
  70     m_dirLister = 0; // deleted by m_dolphinModel
  71 }
  72
  73 void FoldersPanel::setShowHiddenFiles(bool show)
  74 {
  75     FoldersPanelSettings::setShowHiddenFiles(show);
  76     if (m_dirLister != 0) {
  77         m_dirLister->setShowingDotFiles(show);
  78         m_dirLister->openUrl(m_dirLister->url(), KDirLister::Reload);
  79     }
  80 }
  81
  82 bool FoldersPanel::showHiddenFiles() const
  83 {
  84     return FoldersPanelSettings::showHiddenFiles();
  85 }
  86
  87 void FoldersPanel::setAutoScrolling(bool enable)
  88 {
  89     m_treeView->setAutoHorizontalScroll(enable);
  90     FoldersPanelSettings::setAutoScrolling(enable);
  91 }
  92
  93 bool FoldersPanel::autoScrolling() const
  94 {
  95     return FoldersPanelSettings::autoScrolling();
  96 }
  97
  98 void FoldersPanel::rename(const KFileItem& item)
  99 {
 100     if (DolphinSettings::instance().generalSettings()->renameInline()) {
 101         const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 102         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 103         m_treeView->edit(proxyIndex);
 104     } else {
 105         RenameDialog* dialog = new RenameDialog(this, KFileItemList() << item);
 106         dialog->setAttribute(Qt::WA_DeleteOnClose);
 107         dialog->show();
 108         dialog->raise();
 109         dialog->activateWindow();
 110     }
 111 }
 112
 113 bool FoldersPanel::urlChanged()
 114 {
 115     if (!url().isValid() || url().protocol().contains("search")) {
 116         // Skip results shown by a search, as possible identical
 117         // directory names are useless without parent-path information.
 118         return false;
 119     }
 120
 121     if (m_dirLister != 0) {
 122         m_setLeafVisible = true;
 123         loadTree(url());
 124     }
 125
 126     return true;
 127 }
 128
 129 void FoldersPanel::showEvent(QShowEvent* event)
 130 {
 131     if (event->spontaneous()) {
 132         Panel::showEvent(event);
 133         return;
 134     }
 135
 136     if (m_dirLister == 0) {
 137         // Postpone the creating of the dir lister to the first show event.
 138         // This assures that no performance and memory overhead is given when the TreeView is not
 139         // used at all (see FoldersPanel::setUrl()).
 140         m_dirLister = new KDirLister();
 141         m_dirLister->setDirOnlyMode(true);
 142         m_dirLister->setAutoUpdate(true);
 143         m_dirLister->setMainWindow(window());
 144         m_dirLister->setDelayedMimeTypes(true);
 145         m_dirLister->setAutoErrorHandlingEnabled(false, this);
 146         m_dirLister->setShowingDotFiles(FoldersPanelSettings::showHiddenFiles());
 147         connect(m_dirLister, SIGNAL(completed()), this, SLOT(slotDirListerCompleted()));
 148
 149         Q_ASSERT(m_dolphinModel == 0);
 150         m_dolphinModel = new DolphinModel(this);
 151         m_dolphinModel->setDirLister(m_dirLister);
 152         m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 153         connect(m_dolphinModel, SIGNAL(expand(const QModelIndex&)),
 154                 this, SLOT(expandToDir(const QModelIndex&)));
 155
 156         Q_ASSERT(m_proxyModel == 0);
 157         m_proxyModel = new DolphinSortFilterProxyModel(this);
 158         m_proxyModel->setSourceModel(m_dolphinModel);
 159
 160         Q_ASSERT(m_treeView == 0);
 161         m_treeView = new PanelTreeView(this);
 162         m_treeView->setModel(m_proxyModel);
 163         m_proxyModel->setSorting(DolphinView::SortByName);
 164         m_proxyModel->setSortOrder(Qt::AscendingOrder);
 165         m_treeView->setAutoHorizontalScroll(FoldersPanelSettings::autoScrolling());
 166
 167         new FolderExpander(m_treeView, m_proxyModel);
 168
 169         connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
 170                 this, SLOT(updateActiveView(const QModelIndex&)));
 171         connect(m_treeView, SIGNAL(urlsDropped(const QModelIndex&, QDropEvent*)),
 172                 this, SLOT(dropUrls(const QModelIndex&, QDropEvent*)));
 173         connect(m_treeView, SIGNAL(pressed(const QModelIndex&)),
 174                 this, SLOT(updateMouseButtons()));
 175
 176         connect(m_treeView->horizontalScrollBar(), SIGNAL(sliderMoved(int)),
 177                 this, SLOT(slotHorizontalScrollBarMoved(int)));
 178         connect(m_treeView->verticalScrollBar(), SIGNAL(valueChanged(int)),
 179                 this, SLOT(slotVerticalScrollBarMoved(int)));
 180
 181         QVBoxLayout* layout = new QVBoxLayout(this);
 182         layout->setMargin(0);
 183         layout->addWidget(m_treeView);
 184     }
 185
 186     loadTree(url());
 187     Panel::showEvent(event);
 188 }
 189
 190 void FoldersPanel::contextMenuEvent(QContextMenuEvent* event)
 191 {
 192     Panel::contextMenuEvent(event);
 193
 194     KFileItem item;
 195     const QModelIndex index = m_treeView->indexAt(event->pos());
 196     if (index.isValid()) {
 197         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 198         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 199     }
 200
 201     QPointer<TreeViewContextMenu> contextMenu = new TreeViewContextMenu(this, item);
 202     contextMenu->open();
 203     delete contextMenu;
 204 }
 205
 206 void FoldersPanel::keyPressEvent(QKeyEvent* event)
 207 {
 208     const int key = event->key();
 209     if ((key == Qt::Key_Enter) || (key == Qt::Key_Return)) {
 210         event->accept();
 211         updateActiveView(m_treeView->currentIndex());
 212     } else {
 213         Panel::keyPressEvent(event);
 214     }
 215 }
 216
 217 void FoldersPanel::updateActiveView(const QModelIndex& index)
 218 {
 219     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 220     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 221     if (!item.isNull()) {
 222         emit changeUrl(item.url(), m_mouseButtons);
 223     }
 224 }
 225
 226 void FoldersPanel::dropUrls(const QModelIndex& index, QDropEvent* event)
 227 {
 228     if (index.isValid()) {
 229         const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 230         KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 231         Q_ASSERT(!item.isNull());
 232         if (item.isDir()) {
 233             DragAndDropHelper::instance().dropUrls(item, item.url(), event, this);
 234         }
 235     }
 236 }
 237
 238 void FoldersPanel::expandToDir(const QModelIndex& index)
 239 {
 240     m_treeView->setExpanded(index, true);
 241     selectLeafDirectory();
 242 }
 243
 244 void FoldersPanel::scrollToLeaf()
 245 {
 246     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 247     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 248     if (proxyIndex.isValid()) {
 249         m_treeView->scrollTo(proxyIndex);
 250     }
 251 }
 252
 253 void FoldersPanel::updateMouseButtons()
 254 {
 255     m_mouseButtons = QApplication::mouseButtons();
 256 }
 257
 258 void FoldersPanel::slotDirListerCompleted()
 259 {
 260     m_treeView->resizeColumnToContents(DolphinModel::Name);
 261 }
 262
 263 void FoldersPanel::slotHorizontalScrollBarMoved(int value)
 264 {
 265     Q_UNUSED(value);
 266     // Disable the auto-scrolling until the vertical scrollbar has
 267     // been moved by the user.
 268     m_treeView->setAutoHorizontalScroll(false);
 269 }
 270
 271 void FoldersPanel::slotVerticalScrollBarMoved(int value)
 272 {
 273     Q_UNUSED(value);
 274     // Enable the auto-scrolling again (it might have been disabled by
 275     // moving the horizontal scrollbar).
 276     m_treeView->setAutoHorizontalScroll(FoldersPanelSettings::autoScrolling());
 277 }
 278
 279 void FoldersPanel::loadTree(const KUrl& url)
 280 {
 281     Q_ASSERT(m_dirLister != 0);
 282     m_leafDir = url;
 283
 284     KUrl baseUrl;
 285     if (url.isLocalFile()) {
 286         // use the root directory as base for local URLs (#150941)
 287         baseUrl = QDir::rootPath();
 288     } else {
 289         // clear the path for non-local URLs and use it as base
 290         baseUrl = url;
 291         baseUrl.setPath(QString('/'));
 292     }
 293
 294     if (m_dirLister->url() != baseUrl) {
 295         m_dirLister->stop();
 296         m_dirLister->openUrl(baseUrl, KDirLister::Reload);
 297     }
 298     m_dolphinModel->expandToUrl(m_leafDir);
 299 }
 300
 301 void FoldersPanel::selectLeafDirectory()
 302 {
 303     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 304     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 305
 306     if (proxyIndex.isValid()) {
 307         QItemSelectionModel* selModel = m_treeView->selectionModel();
 308         selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::ClearAndSelect);
 309
 310         if (m_setLeafVisible) {
 311             // Invoke scrollToLeaf() asynchronously. This assures that
 312             // the horizontal scrollbar is shown after resizing the column
 313             // (otherwise the scrollbar might hide the leaf).
 314             QTimer::singleShot(0, this, SLOT(scrollToLeaf()));
 315             m_setLeafVisible = false;
 316         }
 317     }
 318 }
 319
 320 #include "folderspanel.moc"