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     setRowVisible(m_sizeInfo, m_sizeVisible);
 316
 317     setRowVisible(m_modifiedInfo,
 318                   (m_visibleDataTypes & KMetaDataWidget::ModifiedData) &&
 319                   settings.readEntry("modified", true));
 320
 321     setRowVisible(m_ownerInfo,
 322                   (m_visibleDataTypes & KMetaDataWidget::OwnerData) &&
 323                   settings.readEntry("owner", true));
 324
 325     setRowVisible(m_permissionsInfo,
 326                   (m_visibleDataTypes & KMetaDataWidget::PermissionsData) &&
 327                   settings.readEntry("permissions", true));
 328
 329 #ifdef HAVE_NEPOMUK
 330     if (m_nepomukActivated) {
 331         setRowVisible(m_ratingWidget,
 332                       (m_visibleDataTypes & KMetaDataWidget::RatingData) &&
 333                       settings.readEntry("rating", true));
 334
 335         setRowVisible(m_taggingWidget,
 336                       (m_visibleDataTypes & KMetaDataWidget::TagsData) &&
 337                       settings.readEntry("tags", true));
 338
 339         setRowVisible(m_commentWidget,
 340                       (m_visibleDataTypes & KMetaDataWidget::CommentData) &&
 341                       settings.readEntry("comment", true));
 342     }
 343 #endif
 344 }
 345
 346 void KMetaDataWidget::Private::slotLoadingFinished()
 347 {
 348 #ifdef HAVE_NEPOMUK
 349     if (m_loadMetaDataThread == 0) {
 350         // The signal finished() has been emitted, but the thread has been marked
 351         // as invalid in the meantime. Just ignore the signal in this case.
 352         return;
 353     }
 354
 355     Q_ASSERT(m_ratingWidget != 0);
 356     Q_ASSERT(m_commentWidget != 0);
 357     Q_ASSERT(m_taggingWidget != 0);
 358     m_ratingWidget->setRating(m_loadMetaDataThread->rating());
 359     m_commentWidget->setText(m_loadMetaDataThread->comment());
 360     m_taggingWidget->setTags(m_loadMetaDataThread->tags());
 361
 362     // Show the remaining meta information as text. The number
 363     // of required rows may very. Existing rows are reused to
 364     // prevent flickering.
 365     int index = 8;  // TODO: don't hardcode this value here
 366     const int rowCount = m_rows.count();
 367     Q_ASSERT(rowCount >= index);
 368
 369     const QList<KLoadMetaDataThread::Item> items = mergedItems(m_loadMetaDataThread->items());
 370     foreach (const KLoadMetaDataThread::Item& item, items) {
 371         const QString itemLabel = item.label;
 372         QString itemValue = item.value;
 373         if (item.value.startsWith("<a href=")) {
 374            // use the text color for the value-links, to create a visual difference
 375            // to the semantically different links like "Change..."
 376            const QColor linkColor = q->palette().text().color();
 377            QString decoration;
 378            if (m_readOnly) {
 379                decoration = QString::fromLatin1("text-decoration:none;");
 380            }
 381            const QString styleText = QString::fromLatin1("style=\"color:%1;%2\" ")
 382                                                          .arg(linkColor.name())
 383                                                          .arg(decoration);
 384            itemValue.insert(3 /* after "<a "*/, styleText);
 385         }
 386         if (index < rowCount) {
 387             // adjust texts of the current row
 388             m_rows[index].label->setText(itemLabel);
 389             QLabel* infoValueLabel = qobject_cast<QLabel*>(m_rows[index].infoWidget);
 390             Q_ASSERT(infoValueLabel != 0);
 391             infoValueLabel->setText(itemValue);
 392         } else {
 393             // create new row
 394             QLabel* infoLabel = new QLabel(itemLabel, q);
 395             QLabel* infoValue = new QLabel(itemValue, q);
 396             connect(infoValue, SIGNAL(linkActivated(QString)),
 397                     q, SLOT(slotLinkActivated(QString)));
 398             addRow(infoLabel, infoValue);
 399         }
 400         ++index;
 401     }
 402     if (items.count() > 0) {
 403         --index;
 404     }
 405
 406     // remove rows that are not needed anymore
 407     for (int i = m_rows.count() - 1; i >= index; --i) {
 408         delete m_rows[i].label;
 409         delete m_rows[i].infoWidget;
 410         m_rows.pop_back();
 411     }
 412
 413     m_files = m_loadMetaDataThread->files();
 414
 415     delete m_loadMetaDataThread;
 416     m_loadMetaDataThread = 0;
 417 #endif
 418
 419     q->updateGeometry();
 420 }
 421
 422 void KMetaDataWidget::Private::slotRatingChanged(unsigned int rating)
 423 {
 424 #ifdef HAVE_NEPOMUK
 425     Nepomuk::MassUpdateJob* job =
 426         Nepomuk::MassUpdateJob::rateResources(m_files.values(), rating);
 427     startChangeDataJob(job);
 428 #else
 429     Q_UNUSED(rating);
 430 #endif
 431 }
 432
 433 void KMetaDataWidget::Private::slotTagsChanged(const QList<Nepomuk::Tag>& tags)
 434 {
 435 #ifdef HAVE_NEPOMUK
 436     m_taggingWidget->setTags(tags);
 437
 438     Nepomuk::MassUpdateJob* job =
 439         Nepomuk::MassUpdateJob::tagResources(m_files.values(), tags);
 440     startChangeDataJob(job);
 441 #else
 442     Q_UNUSED(tags);
 443 #endif
 444 }
 445
 446 void KMetaDataWidget::Private::slotCommentChanged(const QString& comment)
 447 {
 448 #ifdef HAVE_NEPOMUK
 449     Nepomuk::MassUpdateJob* job =
 450         Nepomuk::MassUpdateJob::commentResources(m_files.values(), comment);
 451     startChangeDataJob(job);
 452 #else
 453     Q_UNUSED(comment);
 454 #endif
 455 }
 456
 457 void KMetaDataWidget::Private::slotTagActivated(const Nepomuk::Tag& tag)
 458 {
 459 #ifdef HAVE_NEPOMUK
 460     emit q->urlActivated(tag.resourceUri());
 461 #else
 462     Q_UNUSED(tag);
 463 #endif
 464 }
 465
 466 void KMetaDataWidget::Private::slotMetaDataUpdateDone()
 467 {
 468 #ifdef HAVE_NEPOMUK
 469     q->setEnabled(true);
 470 #endif
 471 }
 472
 473 void KMetaDataWidget::Private::slotLinkActivated(const QString& link)
 474 {
 475     emit q->urlActivated(KUrl(link));
 476 }
 477
 478 #ifdef HAVE_NEPOMUK
 479 void KMetaDataWidget::Private::startChangeDataJob(KJob* job)
 480 {
 481     connect(job, SIGNAL(result(KJob*)),
 482             q, SLOT(slotMetaDataUpdateDone()));
 483     q->setEnabled(false); // no updates during execution
 484     job->start();
 485 }
 486
 487 QList<KLoadMetaDataThread::Item>
 488     KMetaDataWidget::Private::mergedItems(const QList<KLoadMetaDataThread::Item>& items)
 489 {
 490     // TODO: Currently only "width" and "height" are merged as "width x height". If
 491     // other kind of merges should be done too, a more general approach is required.
 492     QList<KLoadMetaDataThread::Item> mergedItems;
 493
 494     KLoadMetaDataThread::Item width;
 495     KLoadMetaDataThread::Item height;
 496
 497     foreach (const KLoadMetaDataThread::Item& item, items) {
 498         if (item.name == "width") {
 499             width = item;
 500         } else if (item.name == "height") {
 501             height = item;
 502         } else {
 503             // insert the item sorted by the label
 504             bool inserted = false;
 505             int i = 0;
 506             const int count = mergedItems.count();
 507             while (!inserted && (i < count)) {
 508                 if (item.label < mergedItems[i].label) {
 509                     mergedItems.insert(i, item);
 510                     inserted = true;
 511                 }
 512                 ++i;
 513             }
 514             if (!inserted) {
 515                 mergedItems.append(item);
 516             }
 517         }
 518     }
 519
 520     const bool foundWidth = !width.name.isEmpty();
 521     const bool foundHeight = !height.name.isEmpty();
 522     if (foundWidth && !foundHeight) {
 523         mergedItems.insert(0, width);
 524     } else if (foundHeight && !foundWidth) {
 525         mergedItems.insert(0, height);
 526     } else if (foundWidth && foundHeight) {
 527         KLoadMetaDataThread::Item size;
 528         size.label = i18nc("@label", "Width x Height:");
 529         size.value = width.value + " x " + height.value;
 530         mergedItems.insert(0, size);
 531     }
 532
 533     return mergedItems;
 534 }
 535 #endif
 536
 537 KMetaDataWidget::KMetaDataWidget(QWidget* parent) :
 538     QWidget(parent),
 539     d(new Private(this))
 540 {
 541 }
 542
 543 KMetaDataWidget::~KMetaDataWidget()
 544 {
 545     delete d;
 546 }
 547
 548 void KMetaDataWidget::setItem(const KFileItem& item)
 549 {
 550     // update values for "type", "size", "modified",
 551     // "owner" and "permissions" synchronously
 552     d->m_sizeLabel->setText(i18nc("@label", "Size:"));
 553     if (item.isDir()) {
 554         d->m_typeInfo->setText(i18nc("@label", "Folder"));
 555         d->setRowVisible(d->m_sizeInfo, false);
 556     } else {
 557         d->m_typeInfo->setText(item.mimeComment());
 558         d->m_sizeInfo->setText(KIO::convertSize(item.size()));
 559         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 560     }
 561     d->m_modifiedInfo->setText(KGlobal::locale()->formatDateTime(item.time(KFileItem::ModificationTime), KLocale::FancyLongDate));
 562     d->m_ownerInfo->setText(item.user());
 563     d->m_permissionsInfo->setText(item.permissionsString());
 564
 565     setItems(KFileItemList() << item);
 566 }
 567
 568 void KMetaDataWidget::setItems(const KFileItemList& items)
 569 {
 570     d->m_fileItems = items;
 571
 572     if (items.count() > 1) {
 573         // calculate the size of all items and show this
 574         // information to the user
 575         d->m_sizeLabel->setText(i18nc("@label", "Total Size:"));
 576         d->setRowVisible(d->m_sizeInfo, d->m_sizeVisible);
 577
 578         quint64 totalSize = 0;
 579         foreach (const KFileItem& item, items) {
 580             if (!item.isDir() && !item.isLink()) {
 581                 totalSize += item.size();
 582             }
 583         }
 584         d->m_sizeInfo->setText(KIO::convertSize(totalSize));
 585     }
 586
 587 #ifdef HAVE_NEPOMUK
 588     if (d->m_nepomukActivated) {
 589         QList<KUrl> urls;
 590         foreach (const KFileItem& item, items) {
 591             const KUrl url = item.nepomukUri();
 592             if (url.isValid()) {
 593                 urls.append(url);
 594             }
 595         }
 596
 597         if (d->m_loadMetaDataThread != 0) {
 598             disconnect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 599             d->m_loadMetaDataThread->cancelAndDelete();
 600         }
 601
 602         d->m_loadMetaDataThread = new KLoadMetaDataThread();
 603         connect(d->m_loadMetaDataThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
 604         d->m_loadMetaDataThread->load(urls);
 605     }
 606 #endif
 607 }
 608
 609 void KMetaDataWidget::setItem(const KUrl& url)
 610 {
 611     KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 612     item.refresh();
 613     setItem(item);
 614 }
 615
 616 void KMetaDataWidget::setItems(const QList<KUrl>& urls)
 617 {
 618     KFileItemList items;
 619     foreach (const KUrl& url, urls) {
 620         KFileItem item(KFileItem::Unknown, KFileItem::Unknown, url);
 621         item.refresh();
 622         items.append(item);
 623     }
 624     setItems(items);
 625 }
 626
 627 KFileItemList KMetaDataWidget::items() const
 628 {
 629     return d->m_fileItems;
 630 }
 631
 632 void KMetaDataWidget::setReadOnly(bool readOnly)
 633 {
 634     d->m_readOnly = readOnly;
 635 #ifdef HAVE_NEPOMUK
 636     // TODO: encapsulate this code as part of a metadata-model for KDE 4.5
 637     if (d->m_taggingWidget)
 638         d->m_taggingWidget->setReadOnly(readOnly);
 639     if (d->m_commentWidget)
 640         d->m_commentWidget->setReadOnly(readOnly);
 641 #endif
 642 }
 643
 644 bool KMetaDataWidget::isReadOnly() const
 645 {
 646     return d->m_readOnly;
 647 }
 648
 649 void KMetaDataWidget::setVisibleDataTypes(MetaDataTypes data)
 650 {
 651     d->m_visibleDataTypes = data;
 652     d->updateRowsVisibility();
 653 }
 654
 655 KMetaDataWidget::MetaDataTypes KMetaDataWidget::visibleDataTypes() const
 656 {
 657     return d->m_visibleDataTypes;
 658 }
 659
 660 QSize KMetaDataWidget::sizeHint() const
 661 {
 662     const int fixedWidth = 200;
 663
 664     int height = d->m_gridLayout->margin() * 2 +
 665                  d->m_gridLayout->spacing() * (d->m_rows.count() - 1);
 666
 667     foreach (const Private::Row& row, d->m_rows) {
 668         if (row.infoWidget != 0) {
 669             int rowHeight = row.infoWidget->heightForWidth(fixedWidth / 2);
 670             if (rowHeight <= 0) {
 671                 rowHeight = row.infoWidget->sizeHint().height();
 672             }
 673             height += rowHeight;
 674         }
 675     }
 676
 677     return QSize(fixedWidth, height);
 678 }
 679
 680 bool KMetaDataWidget::event(QEvent* event)
 681 {
 682     if (event->type() == QEvent::Polish) {
 683         // The adding of rows is not done in the constructor. This allows the
 684         // client of KMetaDataWidget to set a proper foreground role which
 685         // will be respected by the rows.
 686
 687         d->addRow(new QLabel(i18nc("@label", "Type:"), this), d->m_typeInfo);
 688         d->addRow(d->m_sizeLabel, d->m_sizeInfo);
 689         d->addRow(new QLabel(i18nc("@label", "Modified:"), this), d->m_modifiedInfo);
 690         d->addRow(new QLabel(i18nc("@label", "Owner:"), this), d->m_ownerInfo);
 691         d->addRow(new QLabel(i18nc("@label", "Permissions:"), this), d->m_permissionsInfo);
 692
 693     #ifdef HAVE_NEPOMUK
 694         if (d->m_nepomukActivated) {
 695             d->addRow(new QLabel(i18nc("@label", "Rating:"), this), d->m_ratingWidget);
 696             d->addRow(new QLabel(i18nc("@label", "Tags:"), this), d->m_taggingWidget);
 697             d->addRow(new QLabel(i18nc("@label", "Comment:"), this), d->m_commentWidget);
 698         }
 699     #endif
 700
 701         d->updateRowsVisibility();
 702     }
 703
 704     return QWidget::event(event);
 705 }
 706
 707 #include "kmetadatawidget.moc"