src/treeviewsidebarpage.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 "treeviewsidebarpage.h"
  21
  22 #include "dolphinmodel.h"
  23 #include "dolphinsortfilterproxymodel.h"
  24 #include "dolphinview.h"
  25 #include "dolphinsettings.h"
  26 #include "dolphin_folderspanelsettings.h"
  27 #include "dolphin_generalsettings.h"
  28 #include "folderexpander.h"
  29 #include "renamedialog.h"
  30 #include "sidebartreeview.h"
  31 #include "treeviewcontextmenu.h"
  32
  33 #include <kfileplacesmodel.h>
  34 #include <kdirlister.h>
  35 #include <kfileitem.h>
  36 #include <konq_operations.h>
  37
  38 #include <QApplication>
  39 #include <QItemSelection>
  40 #include <QTreeView>
  41 #include <QBoxLayout>
  42 #include <QModelIndex>
  43 #include <QScrollBar>
  44 #include <QTimer>
  45
  46 TreeViewSidebarPage::TreeViewSidebarPage(QWidget* parent) :
  47     SidebarPage(parent),
  48     m_setLeafVisible(false),
  49     m_mouseButtons(Qt::NoButton),
  50     m_dirLister(0),
  51     m_dolphinModel(0),
  52     m_proxyModel(0),
  53     m_treeView(0),
  54     m_leafDir()
  55 {
  56     setLayoutDirection(Qt::LeftToRight);
  57 }
  58
  59 TreeViewSidebarPage::~TreeViewSidebarPage()
  60 {
  61     FoldersPanelSettings::self()->writeConfig();
  62
  63     delete m_proxyModel;
  64     m_proxyModel = 0;
  65     delete m_dolphinModel;
  66     m_dolphinModel = 0;
  67     m_dirLister = 0; // deleted by m_dolphinModel
  68 }
  69
  70 QSize TreeViewSidebarPage::sizeHint() const
  71 {
  72     return QSize(200, 400);
  73 }
  74
  75 void TreeViewSidebarPage::setShowHiddenFiles(bool show)
  76 {
  77     FoldersPanelSettings::setShowHiddenFiles(show);
  78     if (m_dirLister != 0) {
  79         m_dirLister->setShowingDotFiles(show);
  80         m_dirLister->openUrl(m_dirLister->url(), KDirLister::Reload);
  81     }
  82 }
  83
  84 bool TreeViewSidebarPage::showHiddenFiles() const
  85 {
  86     return FoldersPanelSettings::showHiddenFiles();
  87 }
  88
  89
  90 void TreeViewSidebarPage::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 TreeViewSidebarPage::setUrl(const KUrl& url)
 112 {
 113     if (!url.isValid() || (url == SidebarPage::url())) {
 114         return;
 115     }
 116
 117     SidebarPage::setUrl(url);
 118     if (m_dirLister != 0) {
 119         m_setLeafVisible = true;
 120         loadTree(url);
 121     }
 122 }
 123
 124 void TreeViewSidebarPage::showEvent(QShowEvent* event)
 125 {
 126     if (event->spontaneous()) {
 127         SidebarPage::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 TreeViewSidebarPage::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         connect(m_dirLister, SIGNAL(completed()),
 144                 this, SLOT(triggerLoadSubTree()));
 145
 146         Q_ASSERT(m_dolphinModel == 0);
 147         m_dolphinModel = new DolphinModel(this);
 148         m_dolphinModel->setDirLister(m_dirLister);
 149         m_dolphinModel->setDropsAllowed(DolphinModel::DropOnDirectory);
 150         connect(m_dolphinModel, SIGNAL(expand(const QModelIndex&)),
 151                 this, SLOT(triggerExpanding()));
 152
 153         Q_ASSERT(m_proxyModel == 0);
 154         m_proxyModel = new DolphinSortFilterProxyModel(this);
 155         m_proxyModel->setSourceModel(m_dolphinModel);
 156
 157         Q_ASSERT(m_treeView == 0);
 158         m_treeView = new SidebarTreeView(this);
 159         m_treeView->setModel(m_proxyModel);
 160         m_proxyModel->setSorting(DolphinView::SortByName);
 161         m_proxyModel->setSortOrder(Qt::AscendingOrder);
 162
 163         new FolderExpander(m_treeView, m_proxyModel);
 164
 165         connect(m_treeView, SIGNAL(clicked(const QModelIndex&)),
 166                 this, SLOT(updateActiveView(const QModelIndex&)));
 167         connect(m_treeView, SIGNAL(urlsDropped(const QModelIndex&, QDropEvent*)),
 168                 this, SLOT(dropUrls(const QModelIndex&, QDropEvent*)));
 169         connect(m_treeView, SIGNAL(pressed(const QModelIndex&)),
 170                 this, SLOT(updateMouseButtons()));
 171
 172         QVBoxLayout* layout = new QVBoxLayout(this);
 173         layout->setMargin(0);
 174         layout->addWidget(m_treeView);
 175     }
 176
 177     loadTree(url());
 178     SidebarPage::showEvent(event);
 179 }
 180
 181 void TreeViewSidebarPage::contextMenuEvent(QContextMenuEvent* event)
 182 {
 183     SidebarPage::contextMenuEvent(event);
 184
 185     KFileItem item;
 186     const QModelIndex index = m_treeView->indexAt(event->pos());
 187     if (index.isValid()) {
 188         const QModelIndex dolphinModelIndex = m_proxyModel->mapToSource(index);
 189         item = m_dolphinModel->itemForIndex(dolphinModelIndex);
 190         emit changeSelection(KFileItemList());
 191     }
 192
 193     TreeViewContextMenu contextMenu(this, item);
 194     contextMenu.open();
 195 }
 196
 197 void TreeViewSidebarPage::updateActiveView(const QModelIndex& index)
 198 {
 199     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 200     const KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 201     if (!item.isNull()) {
 202         emit changeUrl(item.url(), m_mouseButtons);
 203     }
 204 }
 205
 206 void TreeViewSidebarPage::dropUrls(const QModelIndex& index, QDropEvent* event)
 207 {
 208     if (index.isValid()) {
 209         const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
 210         KFileItem item = m_dolphinModel->itemForIndex(dirIndex);
 211         Q_ASSERT(!item.isNull());
 212         if (item.isDir()) {
 213             emit urlsDropped(item, item.url(), event);
 214         }
 215     }
 216 }
 217
 218 void TreeViewSidebarPage::triggerExpanding()
 219 {
 220     // the expanding of the folders may not be done in the context
 221     // of this slot
 222     QMetaObject::invokeMethod(this, "expandToLeafDir", Qt::QueuedConnection);
 223 }
 224
 225 void TreeViewSidebarPage::triggerLoadSubTree()
 226 {
 227     // the loading of the sub tree may not be done in the context
 228     // of this slot
 229     QMetaObject::invokeMethod(this, "loadSubTree", Qt::QueuedConnection);
 230 }
 231
 232 void TreeViewSidebarPage::expandToLeafDir()
 233 {
 234     // expand all directories until the parent directory of m_leafDir
 235     const KUrl parentUrl = m_leafDir.upUrl();
 236     QModelIndex dirIndex = m_dolphinModel->indexForUrl(parentUrl);
 237     QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 238     m_treeView->setExpanded(proxyIndex, true);
 239     selectLeafDirectory();
 240 }
 241
 242
 243 void TreeViewSidebarPage::loadSubTree()
 244 {
 245     m_treeView->selectionModel()->clearSelection();
 246
 247     if (m_leafDir.isParentOf(m_dirLister->url())) {
 248         // The leaf directory is not a child of the base URL, hence
 249         // no sub directory must be loaded or selected.
 250         return;
 251     }
 252
 253     const QModelIndex index = m_dolphinModel->indexForUrl(m_leafDir);
 254     if (index.isValid()) {
 255         selectLeafDirectory();
 256     } else {
 257         // Load all sub directories that need to get expanded for making
 258         // the leaf directory visible. The slot triggerExpanding() will
 259         // get invoked if the expanding has been finished.
 260         m_dolphinModel->expandToUrl(m_leafDir);
 261     }
 262 }
 263
 264 void TreeViewSidebarPage::scrollToLeaf()
 265 {
 266     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 267     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 268     if (proxyIndex.isValid()) {
 269         m_treeView->scrollTo(proxyIndex);
 270     }
 271 }
 272
 273 void TreeViewSidebarPage::updateMouseButtons()
 274 {
 275     m_mouseButtons = QApplication::mouseButtons();
 276 }
 277
 278 void TreeViewSidebarPage::loadTree(const KUrl& url)
 279 {
 280     Q_ASSERT(m_dirLister != 0);
 281     m_leafDir = url;
 282
 283     KUrl baseUrl = url;
 284     if (url.isLocalFile()) {
 285         // use the root directory as base for local URLs
 286         baseUrl = QDir::rootPath();
 287     } else {
 288         // clear the path for non-local URLs and use it as base
 289         baseUrl = url;
 290         baseUrl.setPath(QString());
 291     }
 292
 293     if (m_dirLister->url() != baseUrl) {
 294         m_dirLister->stop();
 295         m_dirLister->openUrl(baseUrl, KDirLister::Reload);
 296     } else {
 297         loadSubTree();
 298     }
 299 }
 300
 301 void TreeViewSidebarPage::selectLeafDirectory()
 302 {
 303     const QModelIndex dirIndex = m_dolphinModel->indexForUrl(m_leafDir);
 304     const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
 305     if (!proxyIndex.isValid()) {
 306         return;
 307     }
 308
 309     if (m_setLeafVisible) {
 310         // Invoke m_treeView->scrollTo(proxyIndex) asynchronously by
 311         // scrollToLeaf(). This assures that the scrolling is done after
 312         // the horizontal scrollbar gets visible (otherwise the scrollbar
 313         // might hide the leaf).
 314         QTimer::singleShot(100, this, SLOT(scrollToLeaf()));
 315         m_setLeafVisible = false;
 316     }
 317
 318     QItemSelectionModel* selModel = m_treeView->selectionModel();
 319     selModel->setCurrentIndex(proxyIndex, QItemSelectionModel::Select);
 320 }
 321
 322 #include "treeviewsidebarpage.moc"