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 = 1; // 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* disabledProperties[] = {
 285             "asText", "contentSize", "created", "depth", "description", "fileExtension",
 286             "fileName", "fileSize", "hasTag", "isPartOf", "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     Q_ASSERT(m_ratingWidget != 0);
 362     Q_ASSERT(m_commentWidget != 0);
 363     Q_ASSERT(m_taggingWidget != 0);
 364     m_ratingWidget->setRating(m_loadMetaDataThread->rating());
 365     m_commentWidget->setText(m_loadMetaDataThread->comment());
 366     m_taggingWidget->setTags(m_loadMetaDataThread->tags());
 367
 368     // Show the remaining meta information as text. The number
 369     // of required rows may very. Existing rows are reused to
 370     // prevent flickering.
 371     int index = 8;  // TODO: don't hardcode this value here
 372     const int rowCount = m_rows.count();
 373     Q_ASSERT(rowCount >= index);
 374
 375     const QList<KLoadMetaDataThread::Item> items = mergedItems(m_loadMetaDataThread->items());
 376     foreach (const KLoadMetaDataThread::Item& item, items) {
 377         const QString itemLabel = item.label;
 378         QString itemValue = item.value;
 379         if (item.value.startsWith("<a href=")) {
 380            // use the text color for the value-links, to create a visual difference
 381            // to the semantically different links like "Change..."
 382            const QColor linkColor = q->palette().text().color();
 383            QString decoration;
 384            if (m_readOnly) {
 385                decoration = QString::fromLatin1("text-decoration:none;");
 386            }
 387            const QString styleText = QString::fromLatin1("style=\"color:%1;%2\" ")
 388                                                          .arg(linkColor.name())
 389                                                          .arg(decoration);
 390            itemValue.insert(3 /* after "<a "*/, styleText);
 391         }
 392         if (index < rowCount) {
 393             // adjust texts of the current row
 394             m_rows[index].label->setText(itemLabel);
 395             QLabel* infoValueLabel = qobject_cast<QLabel*>(m_rows[index].infoWidget);
 396             Q_ASSERT(infoValueLabel != 0);
 397             infoValueLabel->setText(itemValue);
 398         } else {
 399             // create new row
 400             QLabel* infoLabel = new QLabel(itemLabel, q);
 401             QLabel* infoValue = new QLabel(itemValue, q);
 402             connect(infoValue, SIGNAL(linkActivated(QString)),
 403                     q, SLOT(slotLinkActivated(QString)));
 404             addRow(infoLabel, infoValue);
 405         }
 406         ++index;
 407     }
 408     if (items.count() > 0) {
 409         --index;
 410     }
 411
 412     // remove rows that are not needed anymore
 413     for (int i = m_rows.count() - 1; i >= index; --i) {
 414         delete m_rows[i].label;
 415         delete m_rows[i].infoWidget;
 416         m_rows.pop_back();
 417     }
 418
 419     m_files = m_loadMetaDataThread->files();
 420
 421     delete m_loadMetaDataThread;
 422     m_loadMetaDataThread = 0;
 423 #endif
 424
 425     q->updateGeometry();
 426 }
 427
 428 void KMetaDataWidget::Private::slotRatingChanged(unsigned int rating)
 429 {
 430 #ifdef HAVE_NEPOMUK
 431     Nepomuk::MassUpdateJob* job =
 432         Nepomuk::MassUpdateJob::rateResources(m_files.values(), rating);
 433     startChangeDataJob(job);
 434 #else
 435     Q_UNUSED(rating);
 436 #endif
 437 }
 438
 439 void KMetaDataWidget::Private::slotTagsChanged(const QList<Nepomuk::Tag>& tags)
 440 {
 441 #ifdef HAVE_NEPOMUK
 442     m_taggingWidget->setTags(tags);
 443
 444     Nepomuk::MassUpdateJob* job =
 445         Nepomuk::MassUpdateJob::tagResources(m_files.values(), tags);
 446     startChangeDataJob(job);
 447 #else
 448     Q_UNUSED(tags);
 449 #endif
 450 }
 451
 452 void KMetaDataWidget::Private::slotCommentChanged(const QString& comment)
 453 {
 454 #ifdef HAVE_NEPOMUK
 455     Nepomuk::MassUpdateJob* job =
 456         Nepomuk::MassUpdateJob::commentResources(m_files.values(), comment);
 457     startChangeDataJob(job);
 458 #else
 459     Q_UNUSED(comment);
 460 #endif
 461 }
 462
 463 void KMetaDataWidget::Private::slotTagActivated(const Nepomuk::Tag& tag)
 464 {
 465 #ifdef HAVE_NEPOMUK
 466     emit q->urlActivated(tag.resourceUri());
 467 #else
 468     Q_UNUSED(tag);
 469 #endif
 470 }
 471
 472 void KMetaDataWidget::Private::slotMetaDataUpdateDone()
 473 {
 474 #ifdef HAVE_NEPOMUK
 475     q->setEnabled(true);
 476 #endif
 477 }
 478
 479 void KMetaDataWidget::Private::slotLinkActivated(const QString& link)
 480 {
 481     emit q->urlActivated(KUrl(link));
 482 }
 483
 484 #ifdef HAVE_NEPOMUK
 485 void KMetaDataWidget::Private::startChangeDataJob(KJob* job)
 486 {
 487     connect(job, SIGNAL(result(KJob*)),
 488             q, SLOT(slotMetaDataUpdateDone()));
 489     q->setEnabled(false); // no updates during execution
 490     job->start();
 491 }
 492
 493 QList<KLoadMetaDataThread::Item>
 494     KMetaDataWidget::Private::mergedItems(const QList<KLoadMetaDataThread::Item>& items)
 495 {
 496     // TODO: Currently only "width" and "height" are merged as "width x height". If
 497     // other kind of merges should be done too, a more general approach is required.
 498     QList<KLoadMetaDataThread::Item> mergedItems;
 499
 500     KLoadMetaDataThread::Item width;
 501     KLoadMetaDataThread::Item height;
 502
 503     foreach (const KLoadMetaDataThread::Item& item, items) {
 504         if (item.name == "width") {
 505             width = item;
 506         } else if (item.name == "height") {
 507             height = item;
 508         } else {
 509             // insert the item sorted by the label
 510             bool inserted = false;
 511             int i = 0;
 512             const int count = mergedItems.count();
 513             while (!inserted && (i < count)) {
 514                 if (item.label < mergedItems[i].label) {
 515                     mergedItems.insert(i, item);
 516                     inserted = true;
 517                 }
 518                 ++i;
 519             }
 520             if (!inserted) {
 521                 mergedItems.append(item);
 522             }
 523         }
 524     }
 525
 526     const bool foundWidth = !width.name.isEmpty();
 527     const bool foundHeight = !height.name.isEmpty();
 528     if (foundWidth && !foundHeight) {
 529         mergedItems.insert(0, width);
 530     } else if (foundHeight && !foundWidth) {
 531         mergedItems.insert(0, height);
 532     } else if (foundWidth && foundHeight) {
 533         KLoadMetaDataThread::Item size;
 534         size.label = i18nc("@label", "Width x Height:");
 535         size.value = width.value + " x " + height.value;
 536         mergedItems.insert(0, size);
 537     }
 538
 539     return mergedItems;
 540 }
 541 #endif
 542
 543 KMetaDataWidget::KMetaDataWidget(QWidget* parent) :
 544     QWidget(parent),
 545     d(new Private(this))
 546 {
 547 }
 548
 549 KMetaDataWidget::~KMetaDataWidget()
 550 {
 551     delete d;
 552 }
 553
 554 void KMetaDataWidget::setItem(const KFileItem& item)
 555 {
 556     // update values for "type", "size", "modified",
 557     // "owner" and "permissions" synchronously
 558     d->m_sizeLabel->setText(i18nc("@label", "Size:"));
 559     if (item.isDir()) {
 560         d->m_typeInfo->setText(i18nc("@label", "Folder"));
 561         d->setRowVisible(d->m_sizeInfo, false);
 562     } else {
 563         d->m_typeInfo->setText(item.mimeComment());
 564         d->m_sizeInfo->setText(KIO::convertSize(item.size()));
 565         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 566     }
 567     d->m_modifiedInfo->setText(KGlobal::locale()->formatDateTime(item.time(KFileItem::ModificationTime), KLocale::FancyLongDate));
 568     d->m_ownerInfo->setText(item.user());
 569     d->m_permissionsInfo->setText(item.permissionsString());
 570
 571     setItems(KFileItemList() << item);
 572 }
 573
 574 void KMetaDataWidget::setItems(const KFileItemList& items)
 575 {
 576     d->m_fileItems = items;
 577
 578     if (items.count() > 1) {
 579         // calculate the size of all items and show this
 580         // information to the user
 581         d->m_sizeLabel->setText(i18nc("@label", "Total Size:"));
 582         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 583
 584         quint64 totalSize = 0;
 585         foreach (const KFileItem& item, items) {
 586             if (!item.isDir() && !item.isLink()) {
 587                 totalSize += item.size();
 588             }
 589         }
 590         d->m_sizeInfo->setText(KIO::convertSize(totalSize));
 591     }
 592
 593 #ifdef HAVE_NEPOMUK
 594     if (d->m_nepomukActivated) {
 595         QList<KUrl> urls;
 596         foreach (const KFileItem& item, items) {
 597             const KUrl url = item.nepomukUri();
 598             if (url.isValid()) {
 599                 urls.append(url);
 600             }
 601         }
 602
 603         if (d->m_loadMetaDataThread != 0) {
 604             disconnect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 605             d->m_loadMetaDataThread->cancelAndDelete();
 606         }
 607
 608         d->m_loadMetaDataThread = new KLoadMetaDataThread();
 609         connect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 610         d->m_loadMetaDataThread->load(urls);
 611     }
 612 #endif
 613 }
 614
 615 void KMetaDataWidget::setItem(const KUrl& url)
 616 {
 617     KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 618     item.refresh();
 619     setItem(item);
 620 }
 621
 622 void KMetaDataWidget::setItems(const QList<KUrl>& urls)
 623 {
 624     KFileItemList items;
 625     foreach (const KUrl& url, urls) {
 626         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 627         item.refresh();
 628         items.append(item);
 629     }
 630     setItems(items);
 631 }
 632
 633 KFileItemList KMetaDataWidget::items() const
 634 {
 635     return d->m_fileItems;
 636 }
 637
 638 void KMetaDataWidget::setReadOnly(bool readOnly)
 639 {
 640     d->m_readOnly = readOnly;
 641 #ifdef HAVE_NEPOMUK
 642     // TODO: encapsulate this code as part of a metadata-model for KDE 4.5
 643     if (d->m_taggingWidget)
 644         d->m_taggingWidget->setReadOnly(readOnly);
 645     if (d->m_commentWidget)
 646         d->m_commentWidget->setReadOnly(readOnly);
 647 #endif
 648 }
 649
 650 bool KMetaDataWidget::isReadOnly() const
 651 {
 652     return d->m_readOnly;
 653 }
 654
 655 void KMetaDataWidget::setVisibleDataTypes(MetaDataTypes data)
 656 {
 657     d->m_visibleDataTypes = data;
 658     d->updateRowsVisibility();
 659 }
 660
 661 KMetaDataWidget::MetaDataTypes KMetaDataWidget::visibleDataTypes() const
 662 {
 663     return d->m_visibleDataTypes;
 664 }
 665
 666 QSize KMetaDataWidget::sizeHint() const
 667 {
 668     const int fixedWidth = 200;
 669
 670     int height = d->m_gridLayout->margin() * 2 +
 671                  d->m_gridLayout->spacing() * (d->m_rows.count() - 1);
 672
 673     foreach (const Private::Row& row, d->m_rows) {
 674         if (row.infoWidget != 0) {
 675             int rowHeight = row.infoWidget->heightForWidth(fixedWidth / 2);
 676             if (rowHeight <= 0) {
 677                 rowHeight = row.infoWidget->sizeHint().height();
 678             }
 679             height += rowHeight;
 680         }
 681     }
 682
 683     return QSize(fixedWidth, height);
 684 }
 685
 686 bool KMetaDataWidget::event(QEvent* event)
 687 {
 688     if (event->type() == QEvent::Polish) {
 689         // The adding of rows is not done in the constructor. This allows the
 690         // client of KMetaDataWidget to set a proper foreground role which
 691         // will be respected by the rows.
 692
 693         d->addRow(new QLabel(i18nc("@label", "Type:"), this), d->m_typeInfo);
 694         d->addRow(d->m_sizeLabel, d->m_sizeInfo);
 695         d->addRow(new QLabel(i18nc("@label", "Modified:"), this), d->m_modifiedInfo);
 696         d->addRow(new QLabel(i18nc("@label", "Owner:"), this), d->m_ownerInfo);
 697         d->addRow(new QLabel(i18nc("@label", "Permissions:"), this), d->m_permissionsInfo);
 698
 699     #ifdef HAVE_NEPOMUK
 700         if (d->m_nepomukActivated) {
 701             d->addRow(new QLabel(i18nc("@label", "Rating:"), this), d->m_ratingWidget);
 702             d->addRow(new QLabel(i18nc("@label", "Tags:"), this), d->m_taggingWidget);
 703             d->addRow(new QLabel(i18nc("@label", "Comment:"), this), d->m_commentWidget);
 704         }
 705     #endif
 706
 707         d->updateRowsVisibility();
 708     }
 709
 710     return QWidget::event(event);
 711 }
 712
 713 #include "kmetadatawidget.moc"