src/views/viewextensionsfactory.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2009 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 "viewextensionsfactory.h"
  21
  22 #include "dolphinfileitemdelegate.h"
  23 #include "dolphinsortfilterproxymodel.h"
  24 #include "dolphinview.h"
  25 #include "dolphinviewcontroller.h"
  26 #include "dolphinviewautoscroller.h"
  27 #include "folderexpander.h"
  28 #include "selectionmanager.h"
  29 #include "settings/dolphinsettings.h"
  30 #include "tooltips/tooltipmanager.h"
  31 #include "versioncontrol/versioncontrolobserver.h"
  32 #include "viewmodecontroller.h"
  33
  34 #include "dolphin_generalsettings.h"
  35
  36 #include <KDirLister>
  37 #include <KDirModel>
  38 #include <KFilePreviewGenerator>
  39 #include <QAbstractItemView>
  40 #include <QApplication>
  41
  42 ViewExtensionsFactory::ViewExtensionsFactory(QAbstractItemView* view,
  43                                              DolphinViewController* dolphinViewController,
  44                                              const ViewModeController* viewModeController) :
  45     QObject(view),
  46     m_view(view),
  47     m_dolphinViewController(dolphinViewController),
  48     m_toolTipManager(0),
  49     m_previewGenerator(0),
  50     m_selectionManager(0),
  51     m_autoScroller(0),
  52     m_fileItemDelegate(0),
  53     m_versionControlObserver(0)
  54 {
  55     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
  56
  57     GeneralSettings* settings = DolphinSettings::instance().generalSettings();
  58
  59     // initialize tooltips
  60     if (settings->showToolTips()) {
  61         DolphinSortFilterProxyModel* proxyModel = static_cast<DolphinSortFilterProxyModel*>(view->model());
  62         m_toolTipManager = new ToolTipManager(view, proxyModel);
  63
  64         connect(dolphinViewController, SIGNAL(hideToolTip()),
  65                 m_toolTipManager, SLOT(hideToolTip()));
  66     }
  67
  68     // initialize preview generator
  69     Q_ASSERT(view->iconSize().isValid());
  70     m_previewGenerator = new KFilePreviewGenerator(view);
  71     m_previewGenerator->setPreviewShown(dolphinViewController->view()->showPreview());
  72     connect(viewModeController, SIGNAL(zoomLevelChanged(int)),
  73             this, SLOT(slotZoomLevelChanged()));
  74     connect(viewModeController, SIGNAL(cancelPreviews()),
  75             this, SLOT(cancelPreviews()));
  76
  77     // slotPreviewChanged() is connected as Qt::QueuedConnection to prevent performance
  78     // issues when the directory lister changes its URL after the preview-changes have
  79     // been applied. Usecase: Switch from directory A having no previews to
  80     // directory B with previews (see sequence in DolphinView::setUrl()).
  81     connect(dolphinViewController->view(), SIGNAL(showPreviewChanged()),
  82             this, SLOT(slotShowPreviewChanged()),
  83             Qt::QueuedConnection);
  84
  85     // initialize selection manager
  86     m_selectionManager = new SelectionManager(view);
  87     connect(m_selectionManager, SIGNAL(selectionChanged()),
  88             this, SLOT(requestActivation()));
  89     connect(viewModeController, SIGNAL(urlChanged(const KUrl&)),
  90             m_selectionManager, SLOT(reset()));
  91
  92     // initialize auto scroller
  93     m_autoScroller = new DolphinViewAutoScroller(view);
  94
  95     // initialize file item delegate
  96     m_fileItemDelegate = new DolphinFileItemDelegate(view);
  97     m_fileItemDelegate->setShowToolTipWhenElided(false);
  98     view->setItemDelegate(m_fileItemDelegate);
  99
 100     // initialize version control observer
 101     const DolphinView* dolphinView = dolphinViewController->view();
 102     m_versionControlObserver = new VersionControlObserver(view);
 103     connect(m_versionControlObserver, SIGNAL(infoMessage(const QString&)),
 104             dolphinView, SIGNAL(infoMessage(const QString&)));
 105     connect(m_versionControlObserver, SIGNAL(errorMessage(const QString&)),
 106             dolphinView, SIGNAL(errorMessage(const QString&)));
 107     connect(m_versionControlObserver, SIGNAL(operationCompletedMessage(const QString&)),
 108             dolphinView, SIGNAL(operationCompletedMessage(const QString&)));
 109     connect(dolphinViewController, SIGNAL(requestVersionControlActions(const KFileItemList&)),
 110             this, SLOT(slotRequestVersionControlActions(const KFileItemList&)));
 111
 112     // react on view property changes
 113     connect(dolphinView, SIGNAL(showHiddenFilesChanged()),
 114             this, SLOT(slotShowHiddenFilesChanged()));
 115     connect(dolphinView, SIGNAL(sortingChanged(DolphinView::Sorting)),
 116             this, SLOT(slotSortingChanged(DolphinView::Sorting)));
 117     connect(dolphinView, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 118             this, SLOT(slotSortOrderChanged(Qt::SortOrder)));
 119     connect(dolphinView, SIGNAL(sortFoldersFirstChanged(bool)),
 120             this, SLOT(slotSortFoldersFirstChanged(bool)));
 121
 122     // Give the view the ability to auto-expand its directories on hovering
 123     // (the column view takes care about this itself). If the details view
 124     // uses expandable folders, the auto-expanding should be used always.
 125     m_folderExpander = new FolderExpander(view, proxyModel());
 126     m_folderExpander->setEnabled(settings->autoExpandFolders());
 127     connect(m_folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 128             dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 129
 130     // react on namefilter changes
 131     connect(viewModeController, SIGNAL(nameFilterChanged(const QString&)),
 132             this, SLOT(slotNameFilterChanged(const QString&)));
 133
 134     view->viewport()->installEventFilter(this);
 135 }
 136
 137 ViewExtensionsFactory::~ViewExtensionsFactory()
 138 {
 139 }
 140
 141 void ViewExtensionsFactory::handleCurrentIndexChange(const QModelIndex& current, const QModelIndex& previous)
 142 {
 143     m_autoScroller->handleCurrentIndexChange(current, previous);
 144 }
 145
 146 DolphinFileItemDelegate* ViewExtensionsFactory::fileItemDelegate() const
 147 {
 148     return m_fileItemDelegate;
 149 }
 150
 151 void ViewExtensionsFactory::setAutoFolderExpandingEnabled(bool enabled)
 152 {
 153     m_folderExpander->setEnabled(enabled);
 154 }
 155
 156 bool ViewExtensionsFactory::autoFolderExpandingEnabled() const
 157 {
 158     return m_folderExpander->enabled();
 159 }
 160
 161 bool ViewExtensionsFactory::eventFilter(QObject* watched, QEvent* event)
 162 {
 163     Q_UNUSED(watched);
 164     if ((event->type() == QEvent::Wheel) && m_selectionManager) {
 165         m_selectionManager->reset();
 166     }
 167     return false;
 168 }
 169
 170 void ViewExtensionsFactory::slotZoomLevelChanged()
 171 {
 172     m_previewGenerator->updateIcons();
 173     if (m_selectionManager) {
 174         m_selectionManager->reset();
 175     }
 176 }
 177
 178 void ViewExtensionsFactory::cancelPreviews()
 179 {
 180     m_previewGenerator->cancelPreviews();
 181 }
 182
 183 void ViewExtensionsFactory::slotShowPreviewChanged()
 184 {
 185     const bool show = m_dolphinViewController->view()->showPreview();
 186     m_previewGenerator->setPreviewShown(show);
 187 }
 188
 189 void ViewExtensionsFactory::slotShowHiddenFilesChanged()
 190 {
 191     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel()->sourceModel());
 192     KDirLister* dirLister = dirModel->dirLister();
 193
 194     dirLister->stop();
 195
 196     const bool show = m_dolphinViewController->view()->showHiddenFiles();
 197     dirLister->setShowingDotFiles(show);
 198
 199     const KUrl url = dirLister->url();
 200     if (url.isValid()) {
 201         dirLister->openUrl(url, KDirLister::NoFlags);
 202     }
 203 }
 204
 205 void ViewExtensionsFactory::slotSortingChanged(DolphinView::Sorting sorting)
 206 {
 207     proxyModel()->setSorting(sorting);
 208 }
 209
 210 void ViewExtensionsFactory::slotSortOrderChanged(Qt::SortOrder order)
 211 {
 212     proxyModel()->setSortOrder(order);
 213 }
 214
 215 void ViewExtensionsFactory::slotSortFoldersFirstChanged(bool foldersFirst)
 216 {
 217     proxyModel()->setSortFoldersFirst(foldersFirst);
 218 }
 219
 220 void ViewExtensionsFactory::slotNameFilterChanged(const QString& nameFilter)
 221 {
 222     proxyModel()->setFilterFixedString(nameFilter);
 223 }
 224
 225 void ViewExtensionsFactory::slotRequestVersionControlActions(const KFileItemList& items)
 226 {
 227     QList<QAction*> actions;
 228     if (items.isEmpty()) {
 229         const KDirModel* dirModel = static_cast<const KDirModel*>(proxyModel()->sourceModel());
 230         const KUrl url = dirModel->dirLister()->url();
 231         actions = m_versionControlObserver->contextMenuActions(url.path(KUrl::AddTrailingSlash));
 232     } else {
 233         actions = m_versionControlObserver->contextMenuActions(items);
 234     }
 235     m_dolphinViewController->setVersionControlActions(actions);
 236 }
 237
 238 void ViewExtensionsFactory::requestActivation()
 239 {
 240     m_dolphinViewController->requestActivation();
 241 }
 242
 243 DolphinSortFilterProxyModel* ViewExtensionsFactory::proxyModel() const
 244 {
 245     return static_cast<DolphinSortFilterProxyModel*>(m_view->model());
 246 }
 247
 248 #include "viewextensionsfactory.moc"
 249