src/views/viewproperties.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006-2010 by Peter Penz <peter.penz19@gmail.com>        *
   3  *   Copyright (C) 2006 by Aaron J. Seigo <aseigo@kde.org>                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20
  21 #include "viewproperties.h"
  22
  23 #include "dolphin_directoryviewpropertysettings.h"
  24 #include "dolphin_generalsettings.h"
  25
  26 #include <KComponentData>
  27 #include <KLocale>
  28 #include <KStandardDirs>
  29 #include <KUrl>
  30
  31 #include <QCryptographicHash>
  32 #include <QDate>
  33 #include <QFile>
  34 #include <QFileInfo>
  35
  36 namespace {
  37     const int AdditionalInfoViewPropertiesVersion = 1;
  38     const int NameRolePropertiesVersion = 2;
  39     const int CurrentViewPropertiesVersion = 3;
  40
  41     // String representation to mark the additional properties of
  42     // the details view as customized by the user. See
  43     // ViewProperties::visibleRoles() for more information.
  44     const char* CustomizedDetailsString = "CustomizedDetails";
  45 }
  46
  47 ViewProperties::ViewProperties(const KUrl& url) :
  48     m_changedProps(false),
  49     m_autoSave(true),
  50     m_node(0)
  51 {
  52     GeneralSettings* settings = GeneralSettings::self();
  53     const bool useGlobalViewProps = settings->globalViewProps();
  54     bool useDetailsViewWithPath = false;
  55
  56     // We try and save it to the file .directory in the directory being viewed.
  57     // If the directory is not writable by the user or the directory is not local,
  58     // we store the properties information in a local file.
  59     if (useGlobalViewProps) {
  60         m_filePath = destinationDir("global");
  61     } else if (url.protocol().contains("search")) {
  62         m_filePath = destinationDir("search/") + directoryHashForUrl(url);
  63         useDetailsViewWithPath = true;
  64     } else if (url.protocol() == QLatin1String("trash")) {
  65         m_filePath = destinationDir("trash");
  66         useDetailsViewWithPath = true;
  67     } else if (url.isLocalFile()) {
  68         m_filePath = url.toLocalFile();
  69         const QFileInfo info(m_filePath);
  70         if (!info.isWritable() || !isPartOfHome(m_filePath)) {
  71 #ifdef Q_OS_WIN
  72                         // m_filePath probably begins with C:/ - the colon is not a valid character for paths though
  73                         m_filePath =  QDir::separator() + m_filePath.remove(QLatin1Char(':'));
  74 #endif
  75             m_filePath = destinationDir("local") + m_filePath;
  76         }
  77     } else {
  78         m_filePath = destinationDir("remote") + m_filePath;
  79     }
  80
  81     const QString file = m_filePath + QDir::separator() + QLatin1String(".directory");
  82     m_node = new ViewPropertySettings(KSharedConfig::openConfig(file));
  83
  84     // If the .directory file does not exist or the timestamp is too old,
  85     // use default values instead.
  86     const bool useDefaultProps = (!useGlobalViewProps || useDetailsViewWithPath) &&
  87                                  (!QFileInfo(file).exists() ||
  88                                   (m_node->timestamp() < settings->viewPropsTimestamp()));
  89     if (useDefaultProps) {
  90         if (useDetailsViewWithPath) {
  91             setViewMode(DolphinView::DetailsView);
  92             setVisibleRoles(QList<QByteArray>() << "path");
  93         } else {
  94             // The global view-properties act as default for directories without
  95             // any view-property configuration
  96             settings->setGlobalViewProps(true);
  97
  98             ViewProperties defaultProps(url);
  99             setDirProperties(defaultProps);
 100
 101             settings->setGlobalViewProps(false);
 102             m_changedProps = false;
 103         }
 104     }
 105 }
 106
 107 ViewProperties::~ViewProperties()
 108 {
 109     if (m_changedProps && m_autoSave) {
 110         save();
 111     }
 112
 113     delete m_node;
 114     m_node = 0;
 115 }
 116
 117 void ViewProperties::setViewMode(DolphinView::Mode mode)
 118 {
 119     if (m_node->viewMode() != mode) {
 120         m_node->setViewMode(mode);
 121         update();
 122     }
 123 }
 124
 125 DolphinView::Mode ViewProperties::viewMode() const
 126 {
 127     const int mode = qBound(0, m_node->viewMode(), 2);
 128     return static_cast<DolphinView::Mode>(mode);
 129 }
 130
 131 void ViewProperties::setPreviewsShown(bool show)
 132 {
 133     if (m_node->previewsShown() != show) {
 134         m_node->setPreviewsShown(show);
 135         update();
 136     }
 137 }
 138
 139 bool ViewProperties::previewsShown() const
 140 {
 141     return m_node->previewsShown();
 142 }
 143
 144 void ViewProperties::setHiddenFilesShown(bool show)
 145 {
 146     if (m_node->hiddenFilesShown() != show) {
 147         m_node->setHiddenFilesShown(show);
 148         update();
 149     }
 150 }
 151
 152 void ViewProperties::setGroupedSorting(bool grouped)
 153 {
 154     if (m_node->groupedSorting() != grouped) {
 155         m_node->setGroupedSorting(grouped);
 156         update();
 157     }
 158 }
 159
 160 bool ViewProperties::groupedSorting() const
 161 {
 162     return m_node->groupedSorting();
 163 }
 164
 165 bool ViewProperties::hiddenFilesShown() const
 166 {
 167     return m_node->hiddenFilesShown();
 168 }
 169
 170 void ViewProperties::setSortRole(const QByteArray& role)
 171 {
 172     if (m_node->sortRole() != role) {
 173         m_node->setSortRole(role);
 174         update();
 175     }
 176 }
 177
 178 QByteArray ViewProperties::sortRole() const
 179 {
 180     return m_node->sortRole().toLatin1();
 181 }
 182
 183 void ViewProperties::setSortOrder(Qt::SortOrder sortOrder)
 184 {
 185     if (m_node->sortOrder() != sortOrder) {
 186         m_node->setSortOrder(sortOrder);
 187         update();
 188     }
 189 }
 190
 191 Qt::SortOrder ViewProperties::sortOrder() const
 192 {
 193     return static_cast<Qt::SortOrder>(m_node->sortOrder());
 194 }
 195
 196 void ViewProperties::setSortFoldersFirst(bool foldersFirst)
 197 {
 198     if (m_node->sortFoldersFirst() != foldersFirst) {
 199         m_node->setSortFoldersFirst(foldersFirst);
 200         update();
 201     }
 202 }
 203
 204 bool ViewProperties::sortFoldersFirst() const
 205 {
 206     return m_node->sortFoldersFirst();
 207 }
 208
 209 void ViewProperties::setVisibleRoles(const QList<QByteArray>& roles)
 210 {
 211     // See ViewProperties::visibleRoles() for the storage format
 212     // of the additional information.
 213
 214     // Remove the old values stored for the current view-mode
 215     const QStringList oldVisibleRoles = m_node->visibleRoles();
 216     const QString prefix = viewModePrefix();
 217     QStringList newVisibleRoles = oldVisibleRoles;
 218     for (int i = newVisibleRoles.count() - 1; i >= 0; --i) {
 219         if (newVisibleRoles[i].startsWith(prefix)) {
 220             newVisibleRoles.removeAt(i);
 221         }
 222     }
 223
 224     // Add the updated values for the current view-mode
 225     foreach (const QByteArray& role, roles) {
 226         newVisibleRoles.append(prefix + role);
 227     }
 228
 229     if (oldVisibleRoles != newVisibleRoles) {
 230         const bool markCustomizedDetails = (m_node->viewMode() == DolphinView::DetailsView)
 231                                            && !newVisibleRoles.contains(CustomizedDetailsString);
 232         if (markCustomizedDetails) {
 233             // The additional information of the details-view has been modified. Set a marker,
 234             // so that it is allowed to also show no additional information without doing the
 235             // fallback to show the size and date per default.
 236             newVisibleRoles.append(CustomizedDetailsString);
 237         }
 238
 239         m_node->setVisibleRoles(newVisibleRoles);
 240         update();
 241     }
 242 }
 243
 244 QList<QByteArray> ViewProperties::visibleRoles() const
 245 {
 246     // The shown additional information is stored for each view-mode separately as
 247     // string with the view-mode as prefix. Example:
 248     //
 249     // AdditionalInfo=Details_size,Details_date,Details_owner,Icons_size
 250     //
 251     // To get the representation as QList<QByteArray>, the current
 252     // view-mode must be checked and the values of this mode added to the list.
 253     //
 254     // For the details-view a special case must be respected: Per default the size
 255     // and date should be shown without creating a .directory file. Only if
 256     // the user explictly has modified the properties of the details view (marked
 257     // by "CustomizedDetails"), also a details-view with no additional information
 258     // is accepted.
 259
 260     QList<QByteArray> roles;
 261     roles.append("text");
 262
 263     // Iterate through all stored keys and append all roles that match to
 264     // the curren view mode.
 265     const QString prefix = viewModePrefix();
 266     const int prefixLength = prefix.length();
 267
 268     QStringList visibleRoles = m_node->visibleRoles();
 269     const int version = m_node->version();
 270     if (visibleRoles.isEmpty() && version <= AdditionalInfoViewPropertiesVersion) {
 271         // Convert the obsolete additionalInfo-property from older versions into the
 272         // visibleRoles-property
 273         visibleRoles = const_cast<ViewProperties*>(this)->convertAdditionalInfo();
 274     } else if (version <= NameRolePropertiesVersion) {
 275         visibleRoles = const_cast<ViewProperties*>(this)->convertNameRole();
 276     }
 277
 278     foreach (const QString& visibleRole, visibleRoles) {
 279         if (visibleRole.startsWith(prefix)) {
 280             const QByteArray role = visibleRole.right(visibleRole.length() - prefixLength).toLatin1();
 281             if (role != "text") {
 282                 roles.append(role);
 283             }
 284         }
 285     }
 286
 287     // For the details view the size and date should be shown per default
 288     // until the additional information has been explicitly changed by the user
 289     const bool useDefaultValues = roles.count() == 1 // "text"
 290                                   && (m_node->viewMode() == DolphinView::DetailsView)
 291                                   && !visibleRoles.contains(CustomizedDetailsString);
 292     if (useDefaultValues) {
 293         roles.append("size");
 294         roles.append("date");
 295     }
 296
 297     return roles;
 298 }
 299
 300 void ViewProperties::setHeaderColumnWidths(const QList<int>& widths)
 301 {
 302     if (m_node->headerColumnWidths() != widths) {
 303         m_node->setHeaderColumnWidths(widths);
 304         update();
 305     }
 306 }
 307
 308 QList<int> ViewProperties::headerColumnWidths() const
 309 {
 310     return m_node->headerColumnWidths();
 311 }
 312
 313 void ViewProperties::setDirProperties(const ViewProperties& props)
 314 {
 315     setViewMode(props.viewMode());
 316     setPreviewsShown(props.previewsShown());
 317     setHiddenFilesShown(props.hiddenFilesShown());
 318     setGroupedSorting(props.groupedSorting());
 319     setSortRole(props.sortRole());
 320     setSortOrder(props.sortOrder());
 321     setSortFoldersFirst(props.sortFoldersFirst());
 322     setVisibleRoles(props.visibleRoles());
 323     setHeaderColumnWidths(props.headerColumnWidths());
 324 }
 325
 326 void ViewProperties::setAutoSaveEnabled(bool autoSave)
 327 {
 328     m_autoSave = autoSave;
 329 }
 330
 331 bool ViewProperties::isAutoSaveEnabled() const
 332 {
 333     return m_autoSave;
 334 }
 335
 336 void ViewProperties::update()
 337 {
 338     m_changedProps = true;
 339     m_node->setTimestamp(QDateTime::currentDateTime());
 340 }
 341
 342 void ViewProperties::save()
 343 {
 344     KStandardDirs::makeDir(m_filePath);
 345     m_node->setVersion(CurrentViewPropertiesVersion);
 346     m_node->writeConfig();
 347     m_changedProps = false;
 348 }
 349
 350 KUrl ViewProperties::mirroredDirectory()
 351 {
 352     QString basePath = KGlobal::mainComponent().componentName();
 353     basePath.append("/view_properties/");
 354     return KUrl(KStandardDirs::locateLocal("data", basePath));
 355 }
 356
 357 QString ViewProperties::destinationDir(const QString& subDir) const
 358 {
 359     QString basePath = KGlobal::mainComponent().componentName();
 360     basePath.append("/view_properties/").append(subDir);
 361     return KStandardDirs::locateLocal("data", basePath);
 362 }
 363
 364 QString ViewProperties::viewModePrefix() const
 365 {
 366     QString prefix;
 367
 368     switch (m_node->viewMode()) {
 369     case DolphinView::IconsView:   prefix = "Icons_"; break;
 370     case DolphinView::CompactView: prefix = "Compact_"; break;
 371     case DolphinView::DetailsView: prefix = "Details_"; break;
 372     default: kWarning() << "Unknown view-mode of the view properties";
 373     }
 374
 375     return prefix;
 376 }
 377
 378 QStringList ViewProperties::convertAdditionalInfo()
 379 {
 380     QStringList visibleRoles;
 381
 382     const QStringList additionalInfo = m_node->additionalInfo();
 383     if (!additionalInfo.isEmpty()) {
 384         // Convert the obsolete values like Icons_Size, Details_Date, ...
 385         // to Icons_size, Details_date, ... where the suffix just represents
 386         // the internal role. One special-case must be handled: "LinkDestination"
 387         // has been used for "destination".
 388         visibleRoles.reserve(additionalInfo.count());
 389         foreach (const QString& info, additionalInfo) {
 390             QString visibleRole = info;
 391             int index = visibleRole.indexOf('_');
 392             if (index >= 0 && index + 1 < visibleRole.length()) {
 393                 ++index;
 394                 if (visibleRole[index] == QLatin1Char('L')) {
 395                     visibleRole.replace("LinkDestination", "destination");
 396                 } else {
 397                     visibleRole[index] = visibleRole[index].toLower();
 398                 }
 399             }
 400             visibleRoles.append(visibleRole);
 401         }
 402     }
 403
 404     m_node->setAdditionalInfo(QStringList());
 405     m_node->setVisibleRoles(visibleRoles);
 406     update();
 407
 408     return visibleRoles;
 409 }
 410
 411 QStringList ViewProperties::convertNameRole()
 412 {
 413     QStringList visibleRoles = m_node->visibleRoles();
 414     for (int i = 0; i < visibleRoles.count(); ++i) {
 415         if (visibleRoles[i].endsWith("_name")) {
 416             const int leftLength = visibleRoles[i].length() - 5;
 417             visibleRoles[i] = visibleRoles[i].left(leftLength) + "_text";
 418         }
 419     }
 420
 421     m_node->setVisibleRoles(visibleRoles);
 422     update();
 423
 424     return visibleRoles;
 425 }
 426
 427
 428 bool ViewProperties::isPartOfHome(const QString& filePath)
 429 {
 430     // For performance reasons cache the path in a static QString
 431     // (see QDir::homePath() for more details)
 432     static QString homePath;
 433     if (homePath.isEmpty()) {
 434         homePath = QDir::homePath();
 435         Q_ASSERT(!homePath.isEmpty());
 436     }
 437
 438     return filePath.startsWith(homePath);
 439 }
 440
 441 QString ViewProperties::directoryHashForUrl(const KUrl& url)
 442 {
 443     const QByteArray hashValue = QCryptographicHash::hash(url.prettyUrl().toLatin1(),
 444                                                      QCryptographicHash::Sha1);
 445     QString hashString = hashValue.toBase64();
 446     hashString.replace('/', '-');
 447     return hashString;
 448 }