src/views/viewextensionsfactory.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2009 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 "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.h>
  37 #include <kdirmodel.h>
  38 #include <kfilepreviewgenerator.h>
  39 #include <QAbstractItemView>
  40 #include <QApplication>
  41
  42 ViewExtensionsFactory::ViewExtensionsFactory(QAbstractItemView* view,
  43                                              DolphinViewController* dolphinViewController,
  44                                              const ViewModeController* viewModeController) :
  45     QObject(view),
  46     m_appliedPointingHandCursor(false),
  47     m_view(view),
  48     m_dolphinViewController(dolphinViewController),
  49     m_toolTipManager(0),
  50     m_previewGenerator(0),
  51     m_selectionManager(0),
  52     m_autoScroller(0),
  53     m_fileItemDelegate(0),
  54     m_versionControlObserver(0)
  55 {
  56     view->setSelectionMode(QAbstractItemView::ExtendedSelection);
  57
  58     GeneralSettings* settings = DolphinSettings::instance().generalSettings();
  59
  60     // initialize tooltips
  61     if (settings->showToolTips()) {
  62         DolphinSortFilterProxyModel* proxyModel = static_cast<DolphinSortFilterProxyModel*>(view->model());
  63         m_toolTipManager = new ToolTipManager(view, proxyModel);
  64
  65         connect(dolphinViewController, SIGNAL(hideToolTip()),
  66                 m_toolTipManager, SLOT(hideToolTip()));
  67     }
  68
  69     // initialize preview generator
  70     Q_ASSERT(view->iconSize().isValid());
  71     m_previewGenerator = new KFilePreviewGenerator(view);
  72     m_previewGenerator->setPreviewShown(dolphinViewController->view()->showPreview());
  73     connect(viewModeController, SIGNAL(zoomLevelChanged(int)),
  74             this, SLOT(slotZoomLevelChanged()));
  75     connect(viewModeController, SIGNAL(cancelPreviews()),
  76             this, SLOT(cancelPreviews()));
  77     connect(dolphinViewController->view(), SIGNAL(showPreviewChanged()),
  78             this, SLOT(slotShowPreviewChanged()));
  79
  80     // initialize selection manager
  81     if (settings->showSelectionToggle()) {
  82         m_selectionManager = new SelectionManager(view);
  83         connect(m_selectionManager, SIGNAL(selectionChanged()),
  84                 this, SLOT(requestActivation()));
  85         connect(viewModeController, SIGNAL(urlChanged(const KUrl&)),
  86                 m_selectionManager, SLOT(reset()));
  87     }
  88
  89     // initialize auto scroller
  90     m_autoScroller = new DolphinViewAutoScroller(view);
  91
  92     // initialize file item delegate
  93     m_fileItemDelegate = new DolphinFileItemDelegate(view);
  94     m_fileItemDelegate->setShowToolTipWhenElided(false);
  95     view->setItemDelegate(m_fileItemDelegate);
  96
  97     // initialize version control observer
  98     const DolphinView* dolphinView = dolphinViewController->view();
  99     m_versionControlObserver = new VersionControlObserver(view);
 100     connect(m_versionControlObserver, SIGNAL(infoMessage(const QString&)),
 101             dolphinView, SIGNAL(infoMessage(const QString&)));
 102     connect(m_versionControlObserver, SIGNAL(errorMessage(const QString&)),
 103             dolphinView, SIGNAL(errorMessage(const QString&)));
 104     connect(m_versionControlObserver, SIGNAL(operationCompletedMessage(const QString&)),
 105             dolphinView, SIGNAL(operationCompletedMessage(const QString&)));
 106     connect(dolphinViewController, SIGNAL(requestVersionControlActions(const KFileItemList&)),
 107             this, SLOT(slotRequestVersionControlActions(const KFileItemList&)));
 108
 109     // react on view property changes
 110     connect(dolphinView, SIGNAL(showHiddenFilesChanged()),
 111             this, SLOT(slotShowHiddenFilesChanged()));
 112     connect(dolphinView, SIGNAL(sortingChanged(DolphinView::Sorting)),
 113             this, SLOT(slotSortingChanged(DolphinView::Sorting)));
 114     connect(dolphinView, SIGNAL(sortOrderChanged(Qt::SortOrder)),
 115             this, SLOT(slotSortOrderChanged(Qt::SortOrder)));
 116     connect(dolphinView, SIGNAL(sortFoldersFirstChanged(bool)),
 117             this, SLOT(slotSortFoldersFirstChanged(bool)));
 118
 119     // Give the view the ability to auto-expand its directories on hovering
 120     // (the column view takes care about this itself). If the details view
 121     // uses expandable folders, the auto-expanding should be used always.
 122     m_folderExpander = new FolderExpander(view, proxyModel());
 123     m_folderExpander->setEnabled(settings->autoExpandFolders());
 124     connect(m_folderExpander, SIGNAL(enterDir(const QModelIndex&)),
 125             dolphinViewController, SLOT(triggerItem(const QModelIndex&)));
 126
 127     // react on namefilter changes
 128     connect(viewModeController, SIGNAL(nameFilterChanged(const QString&)),
 129             this, SLOT(slotNameFilterChanged(const QString&)));
 130
 131     view->viewport()->installEventFilter(this);
 132
 133     // Apply a pointing-hand cursor when hovering files
 134     connect(view, SIGNAL(entered(const QModelIndex&)), SLOT(applyPointingHandCursor()));
 135     connect(view, SIGNAL(viewportEntered()), SLOT(restoreCursor()));
 136 }
 137
 138 ViewExtensionsFactory::~ViewExtensionsFactory()
 139 {
 140 }
 141
 142 void ViewExtensionsFactory::handleCurrentIndexChange(const QModelIndex& current, const QModelIndex& previous)
 143 {
 144     m_autoScroller->handleCurrentIndexChange(current, previous);
 145 }
 146
 147 DolphinFileItemDelegate* ViewExtensionsFactory::fileItemDelegate() const
 148 {
 149     return m_fileItemDelegate;
 150 }
 151
 152 void ViewExtensionsFactory::setAutoFolderExpandingEnabled(bool enabled)
 153 {
 154     m_folderExpander->setEnabled(enabled);
 155 }
 156
 157 bool ViewExtensionsFactory::autoFolderExpandingEnabled() const
 158 {
 159     return m_folderExpander->enabled();
 160 }
 161
 162 bool ViewExtensionsFactory::eventFilter(QObject* watched, QEvent* event)
 163 {
 164     Q_UNUSED(watched);
 165
 166     switch (event->type()) {
 167     case QEvent::Wheel:
 168         if (m_selectionManager != 0) {
 169             m_selectionManager->reset();
 170         }
 171         break;
 172
 173     case QEvent::Leave:
 174         restoreCursor();
 175         break;
 176
 177     default: break;
 178     }
 179
 180     return false;
 181 }
 182
 183 void ViewExtensionsFactory::slotZoomLevelChanged()
 184 {
 185     m_previewGenerator->updateIcons();
 186     if (m_selectionManager != 0) {
 187         m_selectionManager->reset();
 188     }
 189 }
 190
 191 void ViewExtensionsFactory::cancelPreviews()
 192 {
 193     m_previewGenerator->cancelPreviews();
 194 }
 195
 196 void ViewExtensionsFactory::slotShowPreviewChanged()
 197 {
 198     const bool show = m_dolphinViewController->view()->showPreview();
 199     m_previewGenerator->setPreviewShown(show);
 200 }
 201
 202 void ViewExtensionsFactory::slotShowHiddenFilesChanged()
 203 {
 204     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel()->sourceModel());
 205     KDirLister* dirLister = dirModel->dirLister();
 206
 207     dirLister->stop();
 208
 209     const bool show = m_dolphinViewController->view()->showHiddenFiles();
 210     dirLister->setShowingDotFiles(show);
 211
 212     const KUrl url = dirLister->url();
 213     if (url.isValid()) {
 214         dirLister->openUrl(url, KDirLister::NoFlags);
 215     }
 216 }
 217
 218 void ViewExtensionsFactory::slotSortingChanged(DolphinView::Sorting sorting)
 219 {
 220     proxyModel()->setSorting(sorting);
 221 }
 222
 223 void ViewExtensionsFactory::slotSortOrderChanged(Qt::SortOrder order)
 224 {
 225     proxyModel()->setSortOrder(order);
 226 }
 227
 228 void ViewExtensionsFactory::slotSortFoldersFirstChanged(bool foldersFirst)
 229 {
 230     proxyModel()->setSortFoldersFirst(foldersFirst);
 231 }
 232
 233 void ViewExtensionsFactory::slotNameFilterChanged(const QString& nameFilter)
 234 {
 235     proxyModel()->setFilterFixedString(nameFilter);
 236 }
 237
 238 void ViewExtensionsFactory::slotRequestVersionControlActions(const KFileItemList& items)
 239 {
 240     QList<QAction*> actions;
 241     if (items.isEmpty()) {
 242         const KDirModel* dirModel = static_cast<const KDirModel*>(proxyModel()->sourceModel());
 243         const KUrl url = dirModel->dirLister()->url();
 244         actions = m_versionControlObserver->contextMenuActions(url.path(KUrl::AddTrailingSlash));
 245     } else {
 246         actions = m_versionControlObserver->contextMenuActions(items);
 247     }
 248     m_dolphinViewController->setVersionControlActions(actions);
 249 }
 250
 251 void ViewExtensionsFactory::requestActivation()
 252 {
 253     m_dolphinViewController->requestActivation();
 254 }
 255
 256 void ViewExtensionsFactory::applyPointingHandCursor()
 257 {
 258     if (!m_appliedPointingHandCursor &&  !(QApplication::mouseButtons() & Qt::LeftButton)) {
 259         QApplication::setOverrideCursor(QCursor(Qt::PointingHandCursor));
 260         m_appliedPointingHandCursor = true;
 261     }
 262 }
 263
 264 void ViewExtensionsFactory::restoreCursor()
 265 {
 266     if (m_appliedPointingHandCursor) {
 267         QApplication::restoreOverrideCursor();
 268         m_appliedPointingHandCursor = false;
 269     }
 270 }
 271
 272 DolphinSortFilterProxyModel* ViewExtensionsFactory::proxyModel() const
 273 {
 274     return static_cast<DolphinSortFilterProxyModel*>(m_view->model());
 275 }
 276
 277 #include "viewextensionsfactory.moc"
 278