src/panels/information/kmetadatawidget.cpp

   1 /*****************************************************************************
   2  * Copyright (C) 2008 by Sebastian Trueg <trueg@kde.org>                     *
   3  * Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at>                      *
   4  *                                                                           *
   5  * This library is free software; you can redistribute it and/or             *
   6  * modify it under the terms of the GNU Library General Public               *
   7  * License version 2 as published by the Free Software Foundation.           *
   8  *                                                                           *
   9  * This library 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 GNU         *
  12  * Library General Public License for more details.                          *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Library General Public License *
  15  * along with this library; see the file COPYING.LIB.  If not, write to      *
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,      *
  17  * Boston, MA 02110-1301, USA.                                               *
  18  *****************************************************************************/
  19
  20 #include "kmetadatawidget.h"
  21
  22 #include <kconfig.h>
  23 #include <kconfiggroup.h>
  24 #include <kfileitem.h>
  25 #include <kglobalsettings.h>
  26 #include <kglobal.h>
  27 #include <klocale.h>
  28
  29 #include <QEvent>
  30 #include <QFontMetrics>
  31 #include <QGridLayout>
  32 #include <QLabel>
  33 #include <QList>
  34 #include <QString>
  35
  36 #include <config-nepomuk.h>
  37 #ifdef HAVE_NEPOMUK
  38     #define DISABLE_NEPOMUK_LEGACY
  39
  40     #include "kcommentwidget_p.h"
  41     #include "kloadmetadatathread_p.h"
  42     #include "ktaggingwidget_p.h"
  43
  44     #include <nepomuk/kratingwidget.h>
  45     #include <nepomuk/resource.h>
  46     #include <nepomuk/resourcemanager.h>
  47     #include <nepomuk/property.h>
  48     #include <nepomuk/tag.h>
  49     #include <nepomuk/variant.h>
  50     #include "nepomukmassupdatejob_p.h"
  51
  52     #include <QMutex>
  53     #include <QSpacerItem>
  54     #include <QThread>
  55 #else
  56     namespace Nepomuk
  57     {
  58         typedef int Tag;
  59     }
  60 #endif
  61
  62 class KMetaDataWidget::Private
  63 {
  64 public:
  65     struct Row
  66     {
  67         QLabel* label;
  68         QWidget* infoWidget;
  69     };
  70
  71     Private(KMetaDataWidget* parent);
  72     ~Private();
  73
  74     void addRow(QLabel* label, QWidget* infoWidget);
  75     void removeMetaInfoRows();
  76     void setRowVisible(QWidget* infoWidget, bool visible);
  77
  78     /**
  79      * Initializes the configuration file "kmetainformationrc"
  80      * with proper default settings for the first start in
  81      * an uninitialized environment.
  82      */
  83     void initMetaInfoSettings();
  84
  85     /**
  86      * Parses the configuration file "kmetainformationrc" and
  87      * updates the visibility of all rows.
  88      */
  89     void updateRowsVisibility();
  90
  91     void slotLoadingFinished();
  92
  93     void slotRatingChanged(unsigned int rating);
  94     void slotTagsChanged(const QList<Nepomuk::Tag>& tags);
  95     void slotCommentChanged(const QString& comment);
  96
  97     void slotMetaDataUpdateDone();
  98     void slotLinkActivated(const QString& link);
  99
 100     void slotTagActivated(const Nepomuk::Tag& tag);
 101
 102 #ifdef HAVE_NEPOMUK
 103     /**
 104      * Disables the metadata widget and starts the job that
 105      * changes the meta data asynchronously. After the job
 106      * has been finished, the metadata widget gets enabled again.
 107      */
 108     void startChangeDataJob(KJob* job);
 109
 110     /**
 111      * Merges items like 'width' and 'height' as one item.
 112      */
 113     QList<KLoadMetaDataThread::Item> mergedItems(const QList<KLoadMetaDataThread::Item>& items);
 114 #endif
 115
 116     bool m_sizeVisible;
 117     bool m_readOnly;
 118     bool m_nepomukActivated;
 119     MetaDataTypes m_visibleDataTypes;
 120     QList<KFileItem> m_fileItems;
 121     QList<Row> m_rows;
 122
 123     QGridLayout* m_gridLayout;
 124
 125     QLabel* m_typeInfo;
 126     QLabel* m_sizeLabel;
 127     QLabel* m_sizeInfo;
 128     QLabel* m_modifiedInfo;
 129     QLabel* m_ownerInfo;
 130     QLabel* m_permissionsInfo;
 131
 132 #ifdef HAVE_NEPOMUK
 133     KRatingWidget* m_ratingWidget;
 134     KTaggingWidget* m_taggingWidget;
 135     KCommentWidget* m_commentWidget;
 136
 137     QMap<KUrl, Nepomuk::Resource> m_files;
 138
 139     KLoadMetaDataThread* m_loadMetaDataThread;
 140 #endif
 141
 142 private:
 143     KMetaDataWidget* const q;
 144 };
 145
 146 KMetaDataWidget::Private::Private(KMetaDataWidget* parent) :
 147     m_sizeVisible(true),
 148     m_readOnly(false),
 149     m_nepomukActivated(false),
 150     m_visibleDataTypes(TypeData | SizeData | ModifiedData | OwnerData |
 151                 PermissionsData | RatingData | TagsData | CommentData),
 152     m_fileItems(),
 153     m_rows(),
 154     m_gridLayout(0),
 155     m_typeInfo(0),
 156     m_sizeLabel(0),
 157     m_sizeInfo(0),
 158     m_modifiedInfo(0),
 159     m_ownerInfo(0),
 160     m_permissionsInfo(0),
 161 #ifdef HAVE_NEPOMUK
 162     m_ratingWidget(0),
 163     m_taggingWidget(0),
 164     m_commentWidget(0),
 165     m_files(),
 166     m_loadMetaDataThread(0),
 167 #endif
 168     q(parent)
 169 {
 170     const QFontMetrics fontMetrics(KGlobalSettings::smallestReadableFont());
 171
 172     m_gridLayout = new QGridLayout(parent);
 173     m_gridLayout->setMargin(0);
 174     m_gridLayout->setSpacing(fontMetrics.height() / 4);
 175
 176     m_typeInfo = new QLabel(parent);
 177     m_sizeLabel = new QLabel(parent);
 178     m_sizeInfo = new QLabel(parent);
 179     m_modifiedInfo = new QLabel(parent);
 180     m_ownerInfo = new QLabel(parent);
 181     m_permissionsInfo = new QLabel(parent);
 182
 183 #ifdef HAVE_NEPOMUK
 184     m_nepomukActivated = (Nepomuk::ResourceManager::instance()->init() == 0);
 185     if (m_nepomukActivated) {
 186         m_ratingWidget = new KRatingWidget(parent);
 187         m_ratingWidget->setFixedHeight(fontMetrics.height());
 188         const Qt::Alignment align = (parent->layoutDirection() == Qt::LeftToRight) ?
 189                                     Qt::AlignLeft : Qt::AlignRight;
 190         m_ratingWidget->setAlignment(align);
 191         connect(m_ratingWidget, SIGNAL(ratingChanged(unsigned int)),
 192                 q, SLOT(slotRatingChanged(unsigned int)));
 193
 194         m_taggingWidget = new KTaggingWidget(parent);
 195         connect(m_taggingWidget, SIGNAL(tagsChanged(const QList<Nepomuk::Tag>&)),
 196                 q, SLOT(slotTagsChanged(const QList<Nepomuk::Tag>&)));
 197         connect(m_taggingWidget, SIGNAL(tagActivated(const Nepomuk::Tag&)),
 198                 q, SLOT(slotTagActivated(const Nepomuk::Tag&)));
 199
 200         m_commentWidget = new KCommentWidget(parent);
 201         connect(m_commentWidget, SIGNAL(commentChanged(const QString&)),
 202                 q, SLOT(slotCommentChanged(const QString&)));
 203     }
 204 #endif
 205
 206     initMetaInfoSettings();
 207 }
 208
 209 KMetaDataWidget::Private::~Private()
 210 {
 211 #ifdef HAVE_NEPOMUK
 212     if (m_loadMetaDataThread != 0) {
 213         disconnect(m_loadMetaDataThread, SIGNAL(finished()), q, SLOT(slotLoadingFinished()));
 214         m_loadMetaDataThread->cancelAndDelete();
 215         m_loadMetaDataThread = 0;
 216     }
 217 #endif
 218 }
 219
 220 void KMetaDataWidget::Private::addRow(QLabel* label, QWidget* infoWidget)
 221 {
 222     Row row;
 223     row.label = label;
 224     row.infoWidget = infoWidget;
 225     m_rows.append(row);
 226
 227     const QFont smallFont = KGlobalSettings::smallestReadableFont();
 228     // use a brighter color for the label and a small font size
 229     QPalette palette = label->palette();
 230     const QPalette::ColorRole role = q->foregroundRole();
 231     QColor textColor = palette.color(role);
 232     textColor.setAlpha(128);
 233     palette.setColor(role, textColor);
 234     label->setPalette(palette);
 235     label->setForegroundRole(role);
 236     label->setFont(smallFont);
 237     label->setWordWrap(true);
 238     label->setAlignment(Qt::AlignTop | Qt::AlignRight);
 239
 240     infoWidget->setForegroundRole(role);
 241     QLabel* infoLabel = qobject_cast<QLabel*>(infoWidget);
 242     if (infoLabel != 0) {
 243         infoLabel->setFont(smallFont);
 244         infoLabel->setWordWrap(true);
 245         infoLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
 246     }
 247
 248     // add the row to grid layout
 249     const int rowIndex = m_rows.count();
 250     m_gridLayout->addWidget(label, rowIndex, 0, Qt::AlignRight);
 251     const int spacerWidth = QFontMetrics(smallFont).size(Qt::TextSingleLine, " ").width();
 252     m_gridLayout->addItem(new QSpacerItem(spacerWidth, 1), rowIndex, 1);
 253     m_gridLayout->addWidget(infoWidget, rowIndex, 2, Qt::AlignLeft);
 254 }
 255
 256 void KMetaDataWidget::Private::setRowVisible(QWidget* infoWidget, bool visible)
 257 {
 258     foreach (const Row& row, m_rows) {
 259         if (row.infoWidget == infoWidget) {
 260             row.label->setVisible(visible);
 261             row.infoWidget->setVisible(visible);
 262             return;
 263         }
 264     }
 265 }
 266
 267
 268 void KMetaDataWidget::Private::initMetaInfoSettings()
 269 {
 270     const int currentVersion = 2; // increase version, if the blacklist of disabled
 271                                   // properties should be updated
 272
 273     KConfig config("kmetainformationrc", KConfig::NoGlobals);
 274     if (config.group("Misc").readEntry("version", 0) < currentVersion) {
 275         // The resource file is read the first time. Assure
 276         // that some meta information is disabled per default.
 277
 278         // clear old info
 279         config.deleteGroup( "Show" );
 280         KConfigGroup settings = config.group("Show");
 281
 282         // trueg: KDE 4.5: use a blacklist of actual rdf properties
 283
 284         static const char* const disabledProperties[] = {
 285             "asText", "contentSize", "created", "depth", "description", "fileExtension",
 286             "fileName", "fileSize", "hasTag", "lastModified", "mimeType", "name",
 287             "numericRating", "parentUrl", "permissions", "plainTextContent", "owner",
 288             "sourceModified", "url",
 289             0 // mandatory last entry
 290         };
 291
 292         for (int i = 0; disabledProperties[i] != 0; ++i) {
 293             settings.writeEntry(disabledProperties[i], false);
 294         }
 295
 296         // mark the group as initialized
 297         config.group("Misc").writeEntry("version", currentVersion);
 298     }
 299 }
 300
 301 void KMetaDataWidget::Private::updateRowsVisibility()
 302 {
 303     KConfig config("kmetainformationrc", KConfig::NoGlobals);
 304     KConfigGroup settings = config.group("Show");
 305
 306     setRowVisible(m_typeInfo,
 307                   (m_visibleDataTypes & KMetaDataWidget::TypeData) &&
 308                   settings.readEntry("type", true));
 309
 310     // Cache in m_sizeVisible whether the size should be shown. This
 311     // is necessary as the size is temporary hidden when the target
 312     // file item is a directory.
 313     m_sizeVisible = (m_visibleDataTypes & KMetaDataWidget::SizeData) &&
 314                       settings.readEntry("size", true);
 315     bool visible = m_sizeVisible;
 316     if (visible && (m_fileItems.count() == 1)) {
 317         // don't show the size information, if one directory is shown
 318         const KFileItem item = m_fileItems.first();
 319         visible = !item.isNull() && !item.isDir();
 320     }
 321     setRowVisible(m_sizeInfo, visible);
 322
 323     setRowVisible(m_modifiedInfo,
 324                   (m_visibleDataTypes & KMetaDataWidget::ModifiedData) &&
 325                   settings.readEntry("modified", true));
 326
 327     setRowVisible(m_ownerInfo,
 328                   (m_visibleDataTypes & KMetaDataWidget::OwnerData) &&
 329                   settings.readEntry("owner", true));
 330
 331     setRowVisible(m_permissionsInfo,
 332                   (m_visibleDataTypes & KMetaDataWidget::PermissionsData) &&
 333                   settings.readEntry("permissions", true));
 334
 335 #ifdef HAVE_NEPOMUK
 336     if (m_nepomukActivated) {
 337         setRowVisible(m_ratingWidget,
 338                       (m_visibleDataTypes & KMetaDataWidget::RatingData) &&
 339                       settings.readEntry("rating", true));
 340
 341         setRowVisible(m_taggingWidget,
 342                       (m_visibleDataTypes & KMetaDataWidget::TagsData) &&
 343                       settings.readEntry("tags", true));
 344
 345         setRowVisible(m_commentWidget,
 346                       (m_visibleDataTypes & KMetaDataWidget::CommentData) &&
 347                       settings.readEntry("comment", true));
 348     }
 349 #endif
 350 }
 351
 352 void KMetaDataWidget::Private::slotLoadingFinished()
 353 {
 354 #ifdef HAVE_NEPOMUK
 355     if (m_loadMetaDataThread == 0) {
 356         // The signal finished() has been emitted, but the thread has been marked
 357         // as invalid in the meantime. Just ignore the signal in this case.
 358         return;
 359     }
 360
 361     if (m_nepomukActivated) {
 362         Q_ASSERT(m_ratingWidget != 0);
 363         Q_ASSERT(m_commentWidget != 0);
 364         Q_ASSERT(m_taggingWidget != 0);
 365         m_ratingWidget->setRating(m_loadMetaDataThread->rating());
 366         m_commentWidget->setText(m_loadMetaDataThread->comment());
 367         m_taggingWidget->setTags(m_loadMetaDataThread->tags());
 368     }
 369
 370     // Show the remaining meta information as text. The number
 371     // of required rows may very. Existing rows are reused to
 372     // prevent flickering.
 373     int usedRowCnt = 8;  // TODO: don't hardcode this value here
 374     const int rowCount = m_rows.count();
 375     Q_ASSERT(rowCount >= usedRowCnt);
 376
 377     const QList<KLoadMetaDataThread::Item> items = mergedItems(m_loadMetaDataThread->items());
 378     foreach (const KLoadMetaDataThread::Item& item, items) {
 379         const QString itemLabel = item.label;
 380         QString itemValue = item.value;
 381         if (item.value.startsWith("<a href=")) {
 382            // use the text color for the value-links, to create a visual difference
 383            // to the semantically different links like "Change..."
 384            const QColor linkColor = q->palette().text().color();
 385            QString decoration;
 386            if (m_readOnly) {
 387                decoration = QString::fromLatin1("text-decoration:none;");
 388            }
 389            const QString styleText = QString::fromLatin1("style=\"color:%1;%2\" ")
 390                                                          .arg(linkColor.name())
 391                                                          .arg(decoration);
 392            itemValue.insert(3 /* after "<a "*/, styleText);
 393         }
 394         if (usedRowCnt < rowCount) {
 395             // adjust texts of the current row
 396             m_rows[usedRowCnt].label->setText(itemLabel);
 397             QLabel* infoValueLabel = qobject_cast<QLabel*>(m_rows[usedRowCnt].infoWidget);
 398             Q_ASSERT(infoValueLabel != 0);
 399             infoValueLabel->setText(itemValue);
 400         } else {
 401             // create new row
 402             QLabel* infoLabel = new QLabel(itemLabel, q);
 403             QLabel* infoValue = new QLabel(itemValue, q);
 404             connect(infoValue, SIGNAL(linkActivated(QString)),
 405                     q, SLOT(slotLinkActivated(QString)));
 406             addRow(infoLabel, infoValue);
 407         }
 408         ++usedRowCnt;
 409     }
 410
 411     // remove rows that are not needed anymore
 412     for (int i = m_rows.count() - 1; i >= usedRowCnt; --i) {
 413         delete m_rows[i].label;
 414         delete m_rows[i].infoWidget;
 415         m_rows.pop_back();
 416     }
 417
 418     m_files = m_loadMetaDataThread->files();
 419
 420     m_loadMetaDataThread->deleteLater();
 421     m_loadMetaDataThread = 0;
 422 #endif
 423
 424     q->updateGeometry();
 425 }
 426
 427 void KMetaDataWidget::Private::slotRatingChanged(unsigned int rating)
 428 {
 429 #ifdef HAVE_NEPOMUK
 430     Nepomuk::MassUpdateJob* job =
 431         Nepomuk::MassUpdateJob::rateResources(m_files.values(), rating);
 432     startChangeDataJob(job);
 433 #else
 434     Q_UNUSED(rating);
 435 #endif
 436 }
 437
 438 void KMetaDataWidget::Private::slotTagsChanged(const QList<Nepomuk::Tag>& tags)
 439 {
 440 #ifdef HAVE_NEPOMUK
 441     m_taggingWidget->setTags(tags);
 442
 443     Nepomuk::MassUpdateJob* job =
 444         Nepomuk::MassUpdateJob::tagResources(m_files.values(), tags);
 445     startChangeDataJob(job);
 446 #else
 447     Q_UNUSED(tags);
 448 #endif
 449 }
 450
 451 void KMetaDataWidget::Private::slotCommentChanged(const QString& comment)
 452 {
 453 #ifdef HAVE_NEPOMUK
 454     Nepomuk::MassUpdateJob* job =
 455         Nepomuk::MassUpdateJob::commentResources(m_files.values(), comment);
 456     startChangeDataJob(job);
 457 #else
 458     Q_UNUSED(comment);
 459 #endif
 460 }
 461
 462 void KMetaDataWidget::Private::slotTagActivated(const Nepomuk::Tag& tag)
 463 {
 464 #ifdef HAVE_NEPOMUK
 465     emit q->urlActivated(tag.resourceUri());
 466 #else
 467     Q_UNUSED(tag);
 468 #endif
 469 }
 470
 471 void KMetaDataWidget::Private::slotMetaDataUpdateDone()
 472 {
 473 #ifdef HAVE_NEPOMUK
 474     q->setEnabled(true);
 475 #endif
 476 }
 477
 478 void KMetaDataWidget::Private::slotLinkActivated(const QString& link)
 479 {
 480     emit q->urlActivated(KUrl(link));
 481 }
 482
 483 #ifdef HAVE_NEPOMUK
 484 void KMetaDataWidget::Private::startChangeDataJob(KJob* job)
 485 {
 486     connect(job, SIGNAL(result(KJob*)),
 487             q, SLOT(slotMetaDataUpdateDone()));
 488     q->setEnabled(false); // no updates during execution
 489     job->start();
 490 }
 491
 492 QList<KLoadMetaDataThread::Item>
 493     KMetaDataWidget::Private::mergedItems(const QList<KLoadMetaDataThread::Item>& items)
 494 {
 495     // TODO: Currently only "width" and "height" are merged as "width x height". If
 496     // other kind of merges should be done too, a more general approach is required.
 497     QList<KLoadMetaDataThread::Item> mergedItems;
 498
 499     KLoadMetaDataThread::Item width;
 500     KLoadMetaDataThread::Item height;
 501
 502     foreach (const KLoadMetaDataThread::Item& item, items) {
 503         if (item.name == "width") {
 504             width = item;
 505         } else if (item.name == "height") {
 506             height = item;
 507         } else {
 508             // insert the item sorted by the label
 509             int pos = 0;
 510             while ( mergedItems.count() > pos &&
 511                     mergedItems[pos].label < item.label ) {
 512                 ++pos;
 513             }
 514             mergedItems.insert( pos, item );
 515         }
 516     }
 517
 518     const bool foundWidth = !width.name.isEmpty();
 519     const bool foundHeight = !height.name.isEmpty();
 520     if (foundWidth && !foundHeight) {
 521         mergedItems.insert(0, width);
 522     } else if (foundHeight && !foundWidth) {
 523         mergedItems.insert(0, height);
 524     } else if (foundWidth && foundHeight) {
 525         KLoadMetaDataThread::Item size;
 526         size.label = i18nc("@label", "Width x Height:");
 527         size.value = width.value + " x " + height.value;
 528         mergedItems.insert(0, size);
 529     }
 530
 531     return mergedItems;
 532 }
 533 #endif
 534
 535 KMetaDataWidget::KMetaDataWidget(QWidget* parent) :
 536     QWidget(parent),
 537     d(new Private(this))
 538 {
 539 }
 540
 541 KMetaDataWidget::~KMetaDataWidget()
 542 {
 543     delete d;
 544 }
 545
 546 void KMetaDataWidget::setItem(const KFileItem& item)
 547 {
 548     // update values for "type", "size", "modified",
 549     // "owner" and "permissions" synchronously
 550     d->m_sizeLabel->setText(i18nc("@label", "Size:"));
 551     if (item.isDir()) {
 552         d->m_typeInfo->setText(i18nc("@label", "Folder"));
 553         d->setRowVisible(d->m_sizeInfo, false);
 554     } else {
 555         d->m_typeInfo->setText(item.mimeComment());
 556         d->m_sizeInfo->setText(KIO::convertSize(item.size()));
 557         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 558     }
 559     d->m_modifiedInfo->setText(KGlobal::locale()->formatDateTime(item.time(KFileItem::ModificationTime), KLocale::FancyLongDate));
 560     d->m_ownerInfo->setText(item.user());
 561     d->m_permissionsInfo->setText(item.permissionsString());
 562
 563     setItems(KFileItemList() << item);
 564 }
 565
 566 void KMetaDataWidget::setItems(const KFileItemList& items)
 567 {
 568     d->m_fileItems = items;
 569
 570     if (items.count() > 1) {
 571         // calculate the size of all items and show this
 572         // information to the user
 573         d->m_sizeLabel->setText(i18nc("@label", "Total Size:"));
 574         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 575
 576         quint64 totalSize = 0;
 577         foreach (const KFileItem& item, items) {
 578             if (!item.isDir() && !item.isLink()) {
 579                 totalSize += item.size();
 580             }
 581         }
 582         d->m_sizeInfo->setText(KIO::convertSize(totalSize));
 583     }
 584
 585 #ifdef HAVE_NEPOMUK
 586     QList<KUrl> urls;
 587     foreach (const KFileItem& item, items) {
 588         const KUrl url = item.nepomukUri();
 589         if (url.isValid()) {
 590             urls.append(url);
 591         }
 592     }
 593
 594     if (d->m_loadMetaDataThread != 0) {
 595         disconnect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 596         d->m_loadMetaDataThread->cancelAndDelete();
 597     }
 598
 599     d->m_loadMetaDataThread = new KLoadMetaDataThread();
 600     connect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 601     d->m_loadMetaDataThread->load(urls);
 602 #endif
 603 }
 604
 605 void KMetaDataWidget::setItem(const KUrl& url)
 606 {
 607     KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 608     item.refresh();
 609     setItem(item);
 610 }
 611
 612 void KMetaDataWidget::setItems(const QList<KUrl>& urls)
 613 {
 614     KFileItemList items;
 615     foreach (const KUrl& url, urls) {
 616         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 617         item.refresh();
 618         items.append(item);
 619     }
 620     setItems(items);
 621 }
 622
 623 KFileItemList KMetaDataWidget::items() const
 624 {
 625     return d->m_fileItems;
 626 }
 627
 628 void KMetaDataWidget::setReadOnly(bool readOnly)
 629 {
 630     d->m_readOnly = readOnly;
 631 #ifdef HAVE_NEPOMUK
 632     // TODO: encapsulate this code as part of a metadata-model for KDE 4.5
 633     if (d->m_taggingWidget)
 634         d->m_taggingWidget->setReadOnly(readOnly);
 635     if (d->m_commentWidget)
 636         d->m_commentWidget->setReadOnly(readOnly);
 637 #endif
 638 }
 639
 640 bool KMetaDataWidget::isReadOnly() const
 641 {
 642     return d->m_readOnly;
 643 }
 644
 645 void KMetaDataWidget::setVisibleDataTypes(MetaDataTypes data)
 646 {
 647     d->m_visibleDataTypes = data;
 648     d->updateRowsVisibility();
 649 }
 650
 651 KMetaDataWidget::MetaDataTypes KMetaDataWidget::visibleDataTypes() const
 652 {
 653     return d->m_visibleDataTypes;
 654 }
 655
 656 QSize KMetaDataWidget::sizeHint() const
 657 {
 658     const int fixedWidth = 200;
 659
 660     int height = d->m_gridLayout->margin() * 2 +
 661                  d->m_gridLayout->spacing() * (d->m_rows.count() - 1);
 662
 663     foreach (const Private::Row& row, d->m_rows) {
 664         if (row.infoWidget != 0) {
 665             int rowHeight = row.infoWidget->heightForWidth(fixedWidth / 2);
 666             if (rowHeight <= 0) {
 667                 rowHeight = row.infoWidget->sizeHint().height();
 668             }
 669             height += rowHeight;
 670         }
 671     }
 672
 673     return QSize(fixedWidth, height);
 674 }
 675
 676 bool KMetaDataWidget::event(QEvent* event)
 677 {
 678     if (event->type() == QEvent::Polish) {
 679         // The adding of rows is not done in the constructor. This allows the
 680         // client of KMetaDataWidget to set a proper foreground role which
 681         // will be respected by the rows.
 682
 683         d->addRow(new QLabel(i18nc("@label", "Type:"), this), d->m_typeInfo);
 684         d->addRow(d->m_sizeLabel, d->m_sizeInfo);
 685         d->addRow(new QLabel(i18nc("@label", "Modified:"), this), d->m_modifiedInfo);
 686         d->addRow(new QLabel(i18nc("@label", "Owner:"), this), d->m_ownerInfo);
 687         d->addRow(new QLabel(i18nc("@label", "Permissions:"), this), d->m_permissionsInfo);
 688
 689     #ifdef HAVE_NEPOMUK
 690         if (d->m_nepomukActivated) {
 691             d->addRow(new QLabel(i18nc("@label", "Rating:"), this), d->m_ratingWidget);
 692             d->addRow(new QLabel(i18nc("@label", "Tags:"), this), d->m_taggingWidget);
 693             d->addRow(new QLabel(i18nc("@label", "Comment:"), this), d->m_commentWidget);
 694         }
 695     #endif
 696
 697         d->updateRowsVisibility();
 698     }
 699
 700     return QWidget::event(event);
 701 }
 702
 703 #include "kmetadatawidget.moc"