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.h>
  29 #include <kdirlister.h>
  30 #include <kfileitem.h>
  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 QSize FoldersPanel::sizeHint() const
  74 {
  75     return QSize(200, 400);
  76 }
  77
  78 void FoldersPanel::setShowHiddenFiles(bool show)
  79 {
  80     FoldersPanelSettings::setShowHiddenFiles(show);
  81     if (m_dirLister != 0) {
  82         m_dirLister->setShowingDotFiles(show);
  83         m_dirLister->openUrl(m_dirLister->url(), KDirLister::Reload);
  84     }
  85 }
  86
  87 bool FoldersPanel::showHiddenFiles() const
  88 {
  89     return FoldersPanelSettings::showHiddenFiles();
  90 }
  91
  92 void FoldersPanel::setAutoScrolling(bool enable)
  93 {
  94     m_treeView->setAutoHorizontalScroll(enable);
  95     FoldersPanelSettings::setAutoScrolling(enable);
  96 }
  97
  98 bool FoldersPanel::autoScrolling() const
  99 {
 100     return FoldersPanelSettings::autoScrolling();
 101 }
 102
 103 void FoldersPanel::rename(const KFileItem& item)
 104 {
 105     if (DolphinSettings::instance().generalSettings()->renameInline()) {
 106         const QModelIndex dirIndex = m_dolphinModel->indexForItem(item);
 107         const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 108         m_treeView->edit(proxyIndex);
 109     } else {
 110         RenameDialog* dialog = new RenameDialog(this, KFileItemList() << item);
 111         dialog->setAttribute(Qt::WA_DeleteOnClose);
 112         dialog->show();
 113         dialog->raise();
 114         dialog->activateWindow();
 115     }
 116 }
 117
 118 bool FoldersPanel::urlChanged()
 119 {
 120     if (!url().isValid() || url().protocol().contains("search")) {
 121         // Skip results shown by a search, as possible identical
 122         // directory names are useless without parent-path information.
 123         return false;
 124     }
 125
 126     if (m_dirLister != 0) {
 127         m_setLeafVisible = true;
 128         loadTree(url());
 129     }
 130
 131     return true;
 132 }
 133
 134 void FoldersPanel::showEvent(QShowEvent* event)
 135 {
 136     if (event->spontaneous()) {
 137         Panel::showEvent(event);
 138         return;
 139     }
 140
 141     if (m_dirLister == 0) {
 142         // Postpone the creating of the dir lister to the first show event.
 143         // This assures that no performance and memory overhead is given when the TreeView is not
 144         // used at all (see FoldersPanel::setUrl()).
 145         m_dirLister = new KDirLister();
 146         m_dirLister->setDirOnlyMode(true);
 147         m_dirLister->setAutoUpdate(true);
 148         m_dirLister->setMainWindow(window());
 149         m_dirLister->setDelayedMimeTypes(true);
 150         m_dirLister->setAutoErrorHandlingEnabled(false, this);
 151         m_dirLister->setShowingDotFiles(FoldersPanelSettings::showHiddenFiles());
 152         connect(m_dirLister, SIGNAL(completed()), this, SLOT(slotDirListerCompleted()));
 153
 154         Q_ASSERT(m_dolphinModel == 0);
 155         m_dolphinModel = new DolphinModel(this);
 156         m_dolphinModel->setDirLister(m_dirLister);
 157         m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 158         connect(m_dolphinModel, SIGNAL(expand(const QModelIndex&)),
 159                 this, SLOT(expandToDir(const QModelIndex&)));
 160
 161         Q_ASSERT(m_proxyModel == 0);
 162         m_proxyModel = new DolphinSortFilterProxyModel(this);
 163         m_proxyModel->setSourceModel(m_dolphinModel);
 164
 165         Q_ASSERT(m_treeView == 0);
 166         m_treeView = new PanelTreeView(this);
 167         m_treeView->setModel(m_proxyModel);
 168         m_proxyModel->setSorting(DolphinView::SortByName);
 169         m_proxyModel->setSortOrder(Qt::AscendingOrder);
 170         m_treeView->setAutoHorizontalScroll(FoldersPanelSettings::autoScrolling());
 171
 172         new FolderExpander(m_treeView, m_proxyModel);
 173
 174         connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
 175                 this, SLOT(updateActiveView(const QModelIndex&)));
 176         connect(m_treeView, SIGNAL(urlsDropped(const QModelIndex&, QDropEvent*)),
 177                 this, SLOT(dropUrls(const QModelIndex&, QDropEvent*)));
 178         connect(m_treeView, SIGNAL(pressed(const QModelIndex&)),
 179                 this, SLOT(updateMouseButtons()));
 180
 181         connect(m_treeView->horizontalScrollBar(), SIGNAL(sliderMoved(int)),
 182                 this, SLOT(slotHorizontalScrollBarMoved(int)));
 183         connect(m_treeView->verticalScrollBar(), SIGNAL(valueChanged(int)),
 184                 this, SLOT(slotVerticalScrollBarMoved(int)));
 185
 186         QVBoxLayout* layout = new QVBoxLayout(this);
 187         layout->setMargin(0);
 188         layout->addWidget(m_treeView);
 189     }
 190
 191     loadTree(url());
 192     Panel::showEvent(event);
 193 }
 194
 195 void FoldersPanel::contextMenuEvent(QContextMenuEvent* event)
 196 {
 197     Panel::contextMenuEvent(event);
 198
 199     KFileItem item;
 200     const QModelIndex index = m_treeView->indexAt(event->pos());
 201     if (index.isValid()) {
 202         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 203         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 204     }
 205
 206     QPointer<TreeViewContextMenu> contextMenu = new TreeViewContextMenu(this, item);
 207     contextMenu->open();
 208     delete contextMenu;
 209 }
 210
 211 void FoldersPanel::keyPressEvent(QKeyEvent* event)
 212 {
 213     const int key = event->key();
 214     if ((key == Qt::Key_Enter) || (key == Qt::Key_Return)) {
 215         event->accept();
 216         updateActiveView(m_treeView->currentIndex());
 217     } else {
 218         Panel::keyPressEvent(event);
 219     }
 220 }
 221
 222 void FoldersPanel::updateActiveView(const QModelIndex& index)
 223 {
 224     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 225     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 226     if (!item.isNull()) {
 227         emit changeUrl(item.url(), m_mouseButtons);
 228     }
 229 }
 230
 231 void FoldersPanel::dropUrls(const QModelIndex& index, QDropEvent* event)
 232 {
 233     if (index.isValid()) {
 234         const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 235         KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 236         Q_ASSERT(!item.isNull());
 237         if (item.isDir()) {
 238             DragAndDropHelper::instance().dropUrls(item, item.url(), event, this);
 239         }
 240     }
 241 }
 242
 243 void FoldersPanel::expandToDir(const QModelIndex& index)
 244 {
 245     m_treeView->setExpanded(index, true);
 246     selectLeafDirectory();
 247 }
 248
 249 void FoldersPanel::scrollToLeaf()
 250 {
 251     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 252     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 253     if (proxyIndex.isValid()) {
 254         m_treeView->scrollTo(proxyIndex);
 255     }
 256 }
 257
 258 void FoldersPanel::updateMouseButtons()
 259 {
 260     m_mouseButtons = QApplication::mouseButtons();
 261 }
 262
 263 void FoldersPanel::slotDirListerCompleted()
 264 {
 265     m_treeView->resizeColumnToContents(DolphinModel::Name);
 266 }
 267
 268 void FoldersPanel::slotHorizontalScrollBarMoved(int value)
 269 {
 270     Q_UNUSED(value);
 271     // Disable the auto-scrolling until the vertical scrollbar has
 272     // been moved by the user.
 273     m_treeView->setAutoHorizontalScroll(false);
 274 }
 275
 276 void FoldersPanel::slotVerticalScrollBarMoved(int value)
 277 {
 278     Q_UNUSED(value);
 279     // Enable the auto-scrolling again (it might have been disabled by
 280     // moving the horizontal scrollbar).
 281     m_treeView->setAutoHorizontalScroll(FoldersPanelSettings::autoScrolling());
 282 }
 283
 284 void FoldersPanel::loadTree(const KUrl& url)
 285 {
 286     Q_ASSERT(m_dirLister != 0);
 287     m_leafDir = url;
 288
 289     KUrl baseUrl;
 290     if (url.isLocalFile()) {
 291         // use the root directory as base for local URLs (#150941)
 292         baseUrl = QDir::rootPath();
 293     } else {
 294         // clear the path for non-local URLs and use it as base
 295         baseUrl = url;
 296         baseUrl.setPath(QString('/'));
 297     }
 298
 299     if (m_dirLister->url() != baseUrl) {
 300         m_dirLister->stop();
 301         m_dirLister->openUrl(baseUrl, KDirLister::Reload);
 302     }
 303     m_dolphinModel->expandToUrl(m_leafDir);
 304 }
 305
 306 void FoldersPanel::selectLeafDirectory()
 307 {
 308     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 309     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 310
 311     if (proxyIndex.isValid()) {
 312         QItemSelectionModel* selModel = m_treeView->selectionModel();
 313         selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::ClearAndSelect);
 314
 315         if (m_setLeafVisible) {
 316             // Invoke scrollToLeaf() asynchronously. This assures that
 317             // the horizontal scrollbar is shown after resizing the column
 318             // (otherwise the scrollbar might hide the leaf).
 319             QTimer::singleShot(0, this, SLOT(scrollToLeaf()));
 320             m_setLeafVisible = false;
 321         }
 322     }
 323 }
 324
 325 #include "folderspanel.moc"