Fix selection issue for Information Panel

[dolphin.git] / src / panels / information / informationpanel.cpp

diff --git a/src/panels/information/informationpanel.cpp b/src/panels/information/informationpanel.cpp
index 000e7fdfbd5435f0c7f8cf517a1c6ba5073f3e17..3b4747b77dc51f38ba1d864b14da87822868c90d 100644 (file)
--- a/src/panels/information/informationpanel.cpp
+++ b/src/panels/information/informationpanel.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
 /***************************************************************************

- *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
+ *   Copyright (C) 2006-2009 by Peter Penz <peter.penz19@gmail.com>        *

  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *


@@ -19,57 +19,26 @@
 
 #include "informationpanel.h"
 
 
 #include "informationpanel.h"
 

-#include <config-nepomuk.h>
-
-#include <kdialog.h>
-#include <kdirnotify.h>
-#include <kfileplacesmodel.h>
-#include <klocale.h>
-#include <kstandarddirs.h>
-#include <kio/previewjob.h>
-#include <kfileitem.h>
-#include <kglobalsettings.h>
-#include <kfilemetainfo.h>
-#include <kiconeffect.h>
-#include <kseparator.h>
-#include <kiconloader.h>
-
-#include <Phonon/BackendCapabilities>
-#include <Phonon/MediaObject>
-#include <Phonon/SeekSlider>
-
-#include <QEvent>
-#include <QInputDialog>
-#include <QLabel>
-#include <QPainter>
-#include <QPixmap>
-#include <QResizeEvent>
-#include <QTextLayout>
-#include <QTextLine>
-#include <QTimer>
+#include "informationpanelcontent.h"
+#include <KIO/Job>
+#include <KDirNotify>
+#include <QApplication>
+#include <QShowEvent>

 #include <QVBoxLayout>
 
 #include <QVBoxLayout>
 

-#include "settings/dolphinsettings.h"
-#include "metadatawidget.h"
-#include "metatextlabel.h"
-#include "phononwidget.h"
-#include "pixmapviewer.h"
-

 InformationPanel::InformationPanel(QWidget* parent) :
     Panel(parent),
     m_initialized(false),
 InformationPanel::InformationPanel(QWidget* parent) :
     Panel(parent),
     m_initialized(false),

-    m_pendingPreview(false),

     m_infoTimer(0),
     m_infoTimer(0),

-    m_outdatedPreviewTimer(0),
+    m_urlChangedTimer(0),
+    m_resetUrlTimer(0),

     m_shownUrl(),
     m_urlCandidate(),
     m_shownUrl(),
     m_urlCandidate(),

+    m_invalidUrlCandidate(),

     m_fileItem(),
     m_selection(),
     m_fileItem(),
     m_selection(),

-    m_nameLabel(0),
-    m_preview(0),
-    m_phononWidget(0),
-    m_metaDataWidget(0),
-    m_metaTextLabel(0)
+    m_folderStatJob(0),
+    m_content(0)

 {
 }
 
 {
 }
 


@@ -77,43 +46,15 @@ InformationPanel::~InformationPanel()
 {
 }
 
 {
 }
 

-QSize InformationPanel::sizeHint() const
-{
-    QSize size = Panel::sizeHint();
-    size.setWidth(minimumSizeHint().width());
-    return size;
-}
-
-void InformationPanel::setUrl(const KUrl& url)
-{
-    Panel::setUrl(url);
-    if (url.isValid() && !isEqualToShownUrl(url)) {
-        if (isVisible()) {
-            cancelRequest();
-            m_shownUrl = url;
-            showItemInfo();
-        } else {
-            m_shownUrl = url;
-        }
-    }
-}
-

 void InformationPanel::setSelection(const KFileItemList& selection)
 {
 void InformationPanel::setSelection(const KFileItemList& selection)
 {

-    if (!isVisible()) {
-        return;
-    }
+    m_selection = selection;
+    m_fileItem = KFileItem();

 
 

-    if ((selection.count() == 0) && (m_selection.count() == 0)) {
-        // The selection has not really changed, only the current index.
-        // QItemSelectionModel emits a signal in this case and it is less
-        // expensive doing the check this way instead of patching
-        // DolphinView::emitSelectionChanged().
+    if (!isVisible()) {

         return;
     }
 
         return;
     }
 

-    m_selection = selection;
-

     const int count = selection.count();
     if (count == 0) {
         if (!isEqualToShownUrl(url())) {
     const int count = selection.count();
     if (count == 0) {
         if (!isEqualToShownUrl(url())) {


@@ -130,28 +71,58 @@ void InformationPanel::setSelection(const KFileItemList& selection)
 
 void InformationPanel::requestDelayedItemInfo(const KFileItem& item)
 {
 
 void InformationPanel::requestDelayedItemInfo(const KFileItem& item)
 {

-    if (!isVisible()) {
+    if (!isVisible() || (item.isNull() && m_fileItem.isNull())) {
+        return;
+    }
+
+    if (QApplication::mouseButtons() & Qt::LeftButton) {
+        // Ignore the request of an item information when a rubberband
+        // selection is ongoing.

         return;
     }
 
     cancelRequest();
 
         return;
     }
 
     cancelRequest();
 

-    m_fileItem = KFileItem();

     if (item.isNull()) {
         // The cursor is above the viewport. If files are selected,
         // show information regarding the selection.
         if (m_selection.size() > 0) {
     if (item.isNull()) {
         // The cursor is above the viewport. If files are selected,
         // show information regarding the selection.
         if (m_selection.size() > 0) {

-            m_pendingPreview = false;
-            m_infoTimer->start();
-        }
-    } else {
-        const KUrl url = item.url();
-        if (url.isValid() && !isEqualToShownUrl(url)) {
-            m_urlCandidate = item.url();
-            m_fileItem = item;
+            m_fileItem = KFileItem();

             m_infoTimer->start();
         }
             m_infoTimer->start();
         }

+    } else if (item.url().isValid() && !isEqualToShownUrl(item.url())) {
+        // The cursor is above an item that is not shown currently
+        m_urlCandidate = item.url();
+        m_fileItem = item;
+        m_infoTimer->start();
+    }
+}
+
+bool InformationPanel::urlChanged()
+{
+    if (!url().isValid()) {
+        return false;
+    }
+
+    if (!isVisible()) {
+        return true;

     }
     }

+
+    cancelRequest();
+    m_selection.clear();
+
+    if (!isEqualToShownUrl(url())) {
+        m_shownUrl = url();
+        m_fileItem = KFileItem();
+
+        // Update the content with a delay. This gives
+        // the directory lister the chance to show the content
+        // before expensive operations are done to show
+        // meta information.
+        m_urlChangedTimer->start();
+    }
+
+    return true;

 }
 
 void InformationPanel::showEvent(QShowEvent* event)
 }
 
 void InformationPanel::showEvent(QShowEvent* event)


@@ -164,6 +135,8 @@ void InformationPanel::showEvent(QShowEvent* event)
             // Information Panel
             init();
         }
             // Information Panel
             init();
         }

+
+        m_shownUrl = url();

         showItemInfo();
     }
 }
         showItemInfo();
     }
 }


@@ -171,23 +144,19 @@ void InformationPanel::showEvent(QShowEvent* event)
 void InformationPanel::resizeEvent(QResizeEvent* event)
 {
     if (isVisible()) {
 void InformationPanel::resizeEvent(QResizeEvent* event)
 {
     if (isVisible()) {

-        // If the text inside the name label or the info label cannot
-        // get wrapped, then the maximum width of the label is increased
-        // so that the width of the information panel gets increased.
-        // To prevent this, the maximum width is adjusted to
-        // the current width of the panel.
-        const int maxWidth = event->size().width() - KDialog::spacingHint() * 4;
-        m_nameLabel->setMaximumWidth(maxWidth);
-
-        // try to increase the preview as large as possible
-        m_preview->setSizeHint(QSize(maxWidth, maxWidth));
-        m_urlCandidate = m_shownUrl; // reset the URL candidate if a resizing is done
+        m_urlCandidate = m_shownUrl;

         m_infoTimer->start();
     }
         m_infoTimer->start();
     }

-

     Panel::resizeEvent(event);
 }
 
     Panel::resizeEvent(event);
 }
 

+void InformationPanel::contextMenuEvent(QContextMenuEvent* event)
+{
+    // TODO: Move code from InformationPanelContent::configureSettings() here
+    m_content->configureSettings(customContextMenuActions());
+    Panel::contextMenuEvent(event);
+}
+

 void InformationPanel::showItemInfo()
 {
     if (!isVisible()) {
 void InformationPanel::showItemInfo()
 {
     if (!isVisible()) {


@@ -196,89 +165,74 @@ void InformationPanel::showItemInfo()
 
     cancelRequest();
 
 
     cancelRequest();
 

-    if (showMultipleSelectionInfo()) {
-        KIconLoader iconLoader;
-        QPixmap icon = iconLoader.loadIcon("dialog-information",
-                                           KIconLoader::NoGroup,
-                                           KIconLoader::SizeEnormous);
-        m_preview->setPixmap(icon);
-        setNameLabelText(i18ncp("@info", "%1 item selected", "%1 items selected",  m_selection.count()));
-        m_shownUrl = KUrl();
+    if (m_fileItem.isNull() && (m_selection.count() > 1)) {
+        // The information for a selection of items should be shown
+        m_content->showItems(m_selection);

     } else {
     } else {

-        const KFileItem item = fileItem();
-        const KUrl itemUrl = item.url();
-        if (!applyPlace(itemUrl)) {
-            // try to get a preview pixmap from the item...
-            m_pendingPreview = true;
-
-            // Mark the currently shown preview as outdated. This is done
-            // with a small delay to prevent a flickering when the next preview
-            // can be shown within a short timeframe.
-            m_outdatedPreviewTimer->start();
-
-            KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << item,
-                                                    m_preview->width(),
-                                                    m_preview->height(),
-                                                    0,
-                                                    0,
-                                                    false,
-                                                    true);
-
-            connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
-                    this, SLOT(showPreview(const KFileItem&, const QPixmap&)));
-            connect(job, SIGNAL(failed(const KFileItem&)),
-                    this, SLOT(showIcon(const KFileItem&)));
-
-            setNameLabelText(itemUrl.fileName());
+        // The information for exactly one item should be shown
+        KFileItem item;
+        if (!m_fileItem.isNull()) {
+            item = m_fileItem;
+        } else if (!m_selection.isEmpty()) {
+            Q_ASSERT(m_selection.count() == 1);
+            item = m_selection.first();
+        }
+
+        if (item.isNull()) {
+            // No item is hovered and no selection has been done: provide
+            // an item for the currently shown directory.
+            m_folderStatJob = KIO::stat(url(), KIO::HideProgressInfo);
+            connect(m_folderStatJob, SIGNAL(result(KJob*)),
+                    this, SLOT(slotFolderStatFinished(KJob*)));
+        } else {
+            m_content->showItem(item);

         }
     }
         }
     }

+}

 
 

-    showMetaInfo();
+void InformationPanel::slotFolderStatFinished(KJob* job)
+{
+    m_folderStatJob = 0;
+    const KIO::UDSEntry entry = static_cast<KIO::StatJob*>(job)->statResult();
+    m_content->showItem(KFileItem(entry, m_shownUrl));

 }
 
 void InformationPanel::slotInfoTimeout()
 {
     m_shownUrl = m_urlCandidate;
 }
 
 void InformationPanel::slotInfoTimeout()
 {
     m_shownUrl = m_urlCandidate;

+    m_urlCandidate.clear();

     showItemInfo();
 }
 
     showItemInfo();
 }
 

-void InformationPanel::markOutdatedPreview()
-{
-    KIconEffect iconEffect;
-    QPixmap disabledPixmap = iconEffect.apply(m_preview->pixmap(),
-                                              KIconLoader::Desktop,
-                                              KIconLoader::DisabledState);
-    m_preview->setPixmap(disabledPixmap);
-}
-
-void InformationPanel::showIcon(const KFileItem& item)
-{
-    m_outdatedPreviewTimer->stop();
-    m_pendingPreview = false;
-    if (!applyPlace(item.url())) {
-        m_preview->setPixmap(item.pixmap(KIconLoader::SizeEnormous));
-    }
-}
-
-void InformationPanel::showPreview(const KFileItem& item,
-                                  const QPixmap& pixmap)
+void InformationPanel::reset()

 {
 {

-    m_outdatedPreviewTimer->stop();
+    if (m_invalidUrlCandidate == m_shownUrl) {
+        m_invalidUrlCandidate = KUrl();

 
 

-    Q_UNUSED(item);
-    if (m_pendingPreview) {
-        m_preview->setPixmap(pixmap);
-        m_pendingPreview = false;
+        // The current URL is still invalid. Reset
+        // the content to show the directory URL.
+        m_selection.clear();
+        m_shownUrl = url();
+        m_fileItem = KFileItem();
+        showItemInfo();

     }
 }
 
 void InformationPanel::slotFileRenamed(const QString& source, const QString& dest)
 {
     if (m_shownUrl == KUrl(source)) {
     }
 }
 
 void InformationPanel::slotFileRenamed(const QString& source, const QString& dest)
 {
     if (m_shownUrl == KUrl(source)) {

-        // the currently shown file has been renamed, hence update the item information
-        // for the renamed file
-        KFileItem item(KFileItem::Unknown, KFileItem::Unknown, KUrl(dest));
-        requestDelayedItemInfo(item);
+        m_shownUrl = KUrl(dest);
+        m_fileItem = KFileItem(KFileItem::Unknown, KFileItem::Unknown, m_shownUrl);
+
+        if ((m_selection.count() == 1) && (m_selection[0].url() == KUrl(source))) {
+            m_selection[0] = m_fileItem;
+            // Implementation note: Updating the selection is only required if exactly one
+            // item is selected, as the name of the item is shown. If this should change
+            // in future: Before parsing the whole selection take care to test possible
+            // performance bottlenecks when renaming several hundreds of files.
+        }
+
+        showItemInfo();

     }
 }
 
     }
 }
 


@@ -308,8 +262,7 @@ void InformationPanel::slotFilesRemoved(const QStringList& files)
         if (m_shownUrl == KUrl(fileName)) {
             // the currently shown item has been removed, show
             // the parent directory as fallback
         if (m_shownUrl == KUrl(fileName)) {
             // the currently shown item has been removed, show
             // the parent directory as fallback

-            m_shownUrl = url();
-            showItemInfo();
+            markUrlAsInvalid();

             break;
         }
     }
             break;
         }
     }


@@ -330,172 +283,23 @@ void InformationPanel::slotLeftDirectory(const QString& directory)
         // has been unmounted. In this case no directory change will be
         // done in Dolphin, but the Information Panel must be updated to
         // indicate an invalid directory.
         // has been unmounted. In this case no directory change will be
         // done in Dolphin, but the Information Panel must be updated to
         // indicate an invalid directory.

-        m_shownUrl = url();
-        showItemInfo();
-    }
-}
-
-bool InformationPanel::applyPlace(const KUrl& url)
-{
-    KFilePlacesModel* placesModel = DolphinSettings::instance().placesModel();
-    int count = placesModel->rowCount();
-
-    for (int i = 0; i < count; ++i) {
-        QModelIndex index = placesModel->index(i, 0);
-
-        if (url.equals(placesModel->url(index), KUrl::CompareWithoutTrailingSlash)) {
-            setNameLabelText(placesModel->text(index));
-            m_preview->setPixmap(placesModel->icon(index).pixmap(128, 128));
-            return true;
-        }
+        markUrlAsInvalid();

     }
     }

-
-    return false;

 }
 
 void InformationPanel::cancelRequest()
 {
 }
 
 void InformationPanel::cancelRequest()
 {

-    m_infoTimer->stop();
-}
-
-void InformationPanel::showMetaInfo()
-{
-    m_metaTextLabel->clear();
-
-    if (showMultipleSelectionInfo()) {
-        if (m_metaDataWidget != 0) {
-            KUrl::List urls;
-            foreach (const KFileItem& item, m_selection) {
-                urls.append(item.targetUrl());
-            }
-            m_metaDataWidget->setFiles(urls);
-        }
-
-        quint64 totalSize = 0;
-        foreach (const KFileItem& item, m_selection) {
-            // Only count the size of files, not dirs to match what
-            // DolphinViewContainer::selectionStatusBarText() does.
-            if (!item.isDir() && !item.isLink()) {
-                totalSize += item.size();
-            }
-        }
-        m_metaTextLabel->add(i18nc("@label", "Total size:"), KIO::convertSize(totalSize));
-    } else {
-        const KFileItem item = fileItem();
-        if (item.isDir()) {
-            m_metaTextLabel->add(i18nc("@label", "Type:"), i18nc("@label", "Folder"));
-            m_metaTextLabel->add(i18nc("@label", "Modified:"), item.timeString());
-        } else {
-            m_metaTextLabel->add(i18nc("@label", "Type:"), item.mimeComment());
-
-            m_metaTextLabel->add(i18nc("@label", "Size:"), KIO::convertSize(item.size()));
-            m_metaTextLabel->add(i18nc("@label", "Modified:"), item.timeString());
-
-            if (item.isLocalFile()) {
-                // TODO: See convertMetaInfo below, find a way to display only interesting information
-                // in a readable way
-                const KFileMetaInfo::WhatFlags flags = KFileMetaInfo::Fastest |
-                                                       KFileMetaInfo::TechnicalInfo |
-                                                       KFileMetaInfo::ContentInfo;
-                const QString path = item.url().path();
-                const KFileMetaInfo fileMetaInfo(path, QString(), flags);
-                if (fileMetaInfo.isValid()) {
-                    const QHash<QString, KFileMetaInfoItem>& items = fileMetaInfo.items();
-                    QHash<QString, KFileMetaInfoItem>::const_iterator it = items.constBegin();
-                    const QHash<QString, KFileMetaInfoItem>::const_iterator end = items.constEnd();
-                    QString labelText;
-                    while (it != end) {
-                        const KFileMetaInfoItem& metaInfoItem = it.value();
-                        const QVariant& value = metaInfoItem.value();
-                        if (value.isValid() && convertMetaInfo(metaInfoItem.name(), labelText)) {
-                            m_metaTextLabel->add(labelText, value.toString());
-                        }
-                        ++it;
-                    }
-                }
-            }
-        }
-
-        if (m_metaDataWidget != 0) {
-            m_metaDataWidget->setFile(item.targetUrl());
-        }
+    delete m_folderStatJob;
+    m_folderStatJob = 0;

 
 

-        if (Phonon::BackendCapabilities::isMimeTypeAvailable(item.mimetype())) {
-            if (m_phononWidget == 0) {
-                m_phononWidget = new PhononWidget(this);
-
-                QVBoxLayout* vBoxLayout = qobject_cast<QVBoxLayout*>(layout());
-                Q_ASSERT(vBoxLayout != 0);
-                vBoxLayout->insertWidget(3, m_phononWidget);
-            }
-            m_phononWidget->setUrl(item.url());
-        } else {
-            delete m_phononWidget;
-            m_phononWidget = 0;
-        }
-    }
-}
-
-bool InformationPanel::convertMetaInfo(const QString& key, QString& text) const
-{
-    struct MetaKey {
-        const char* key;
-        QString text;
-    };
-
-    // sorted list of keys, where its data should be shown
-    static const MetaKey keys[] = {
-        { "http://freedesktop.org/standards/xesam/1.0/core#album",       i18nc("@label", "Album:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#artist",      i18nc("@label", "Artist:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#genre",       i18nc("@label", "Genre:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#height",      i18nc("@label", "Height:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#lineCount",   i18nc("@label", "Lines:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#title",       i18nc("@label", "Title:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#type",        i18nc("@label", "Type:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#trackNumber", i18nc("@label", "Track:") },
-        { "http://freedesktop.org/standards/xesam/1.0/core#width",       i18nc("@label", "Width:") }
-    };
-
-    // do a binary search for the key...
-    int top = 0;
-    int bottom = sizeof(keys) / sizeof(MetaKey) - 1;
-    while (top <= bottom) {
-        const int middle = (top + bottom) / 2;
-        const int result = key.compare(keys[middle].key);
-        if (result < 0) {
-            bottom = middle - 1;
-        } else if (result > 0) {
-            top = middle + 1;
-        } else {
-            text = keys[middle].text;
-            return true;
-        }
-    }
-
-    return false;
-}
-
-KFileItem InformationPanel::fileItem() const
-{
-    if (!m_fileItem.isNull()) {
-        return m_fileItem;
-    }
-
-    if (!m_selection.isEmpty()) {
-        Q_ASSERT(m_selection.count() == 1);
-        return m_selection.first();
-    }
-
-    // no item is hovered and no selection has been done: provide
-    // an item for the directory represented by m_shownUrl
-    KFileItem item(KFileItem::Unknown, KFileItem::Unknown, m_shownUrl);
-    item.refresh();
-    return item;
-}
+    m_infoTimer->stop();
+    m_resetUrlTimer->stop();
+    // Don't reset m_urlChangedTimer. As it is assured that the timeout of m_urlChangedTimer
+    // has the smallest interval (see init()), it is not possible that the exceeded timer
+    // would overwrite an information provided by a selection or hovering.

 
 

-bool InformationPanel::showMultipleSelectionInfo() const
-{
-    return m_fileItem.isNull() && (m_selection.count() > 1);
+    m_invalidUrlCandidate.clear();
+    m_urlCandidate.clear();

 }
 
 bool InformationPanel::isEqualToShownUrl(const KUrl& url) const
 }
 
 bool InformationPanel::isEqualToShownUrl(const KUrl& url) const


@@ -503,104 +307,51 @@ bool InformationPanel::isEqualToShownUrl(const KUrl& url) const
     return m_shownUrl.equals(url, KUrl::CompareWithoutTrailingSlash);
 }
 
     return m_shownUrl.equals(url, KUrl::CompareWithoutTrailingSlash);
 }
 

-void InformationPanel::setNameLabelText(const QString& text)
+void InformationPanel::markUrlAsInvalid()

 {
 {

-    QTextOption textOption;
-    textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
-
-    QTextLayout textLayout(text);
-    textLayout.setFont(m_nameLabel->font());
-    textLayout.setTextOption(textOption);
-
-    QString wrappedText;
-    wrappedText.reserve(text.length());
-
-    // wrap the text to fit into the width of m_nameLabel
-    textLayout.beginLayout();
-    QTextLine line = textLayout.createLine();
-    while (line.isValid()) {
-        line.setLineWidth(m_nameLabel->width());
-        wrappedText += text.mid(line.textStart(), line.textLength());
-
-        line = textLayout.createLine();
-        if (line.isValid()) {
-            wrappedText += QChar::LineSeparator;
-        }
-    }
-    textLayout.endLayout();
-
-    m_nameLabel->setText(wrappedText);
+    m_invalidUrlCandidate = m_shownUrl;
+    m_resetUrlTimer->start();

 }
 
 void InformationPanel::init()
 {
 }
 
 void InformationPanel::init()
 {

-    const int spacing = KDialog::spacingHint();
-

     m_infoTimer = new QTimer(this);
     m_infoTimer->setInterval(300);
     m_infoTimer->setSingleShot(true);
     connect(m_infoTimer, SIGNAL(timeout()),
             this, SLOT(slotInfoTimeout()));
 
     m_infoTimer = new QTimer(this);
     m_infoTimer->setInterval(300);
     m_infoTimer->setSingleShot(true);
     connect(m_infoTimer, SIGNAL(timeout()),
             this, SLOT(slotInfoTimeout()));
 

-    // Initialize timer for disabling an outdated preview with a small
-    // delay. This prevents flickering if the new preview can be generated
-    // within a very small timeframe.
-    m_outdatedPreviewTimer = new QTimer(this);
-    m_outdatedPreviewTimer->setInterval(300);
-    m_outdatedPreviewTimer->setSingleShot(true);
-    connect(m_outdatedPreviewTimer, SIGNAL(timeout()),
-            this, SLOT(markOutdatedPreview()));
-
-    QVBoxLayout* layout = new QVBoxLayout;
-    layout->setSpacing(spacing);
-
-    // name
-    m_nameLabel = new QLabel(this);
-    QFont font = m_nameLabel->font();
-    font.setBold(true);
-    m_nameLabel->setFont(font);
-    m_nameLabel->setAlignment(Qt::AlignHCenter);
-    m_nameLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
-
-    // preview
-    m_preview = new PixmapViewer(this);
-    m_preview->setMinimumWidth(KIconLoader::SizeEnormous + KIconLoader::SizeMedium);
-    m_preview->setMinimumHeight(KIconLoader::SizeEnormous);
-
-    if (MetaDataWidget::metaDataAvailable()) {
-        // rating, comment and tags
-        m_metaDataWidget = new MetaDataWidget(this);
-        m_metaDataWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
-    }
+    m_urlChangedTimer = new QTimer(this);
+    m_urlChangedTimer->setInterval(200);
+    m_urlChangedTimer->setSingleShot(true);
+    connect(m_urlChangedTimer, SIGNAL(timeout()),
+            this, SLOT(showItemInfo()));

 
 

-    // general meta text information
-    m_metaTextLabel = new MetaTextLabel(this);
-    m_metaTextLabel->setMinimumWidth(spacing);
-    m_metaTextLabel->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
-
-    layout->addWidget(m_nameLabel);
-    layout->addWidget(new KSeparator(this));
-    layout->addWidget(m_preview);
-    layout->addWidget(new KSeparator(this));
-    if (m_metaDataWidget != 0) {
-        layout->addWidget(m_metaDataWidget);
-        layout->addWidget(new KSeparator(this));
-    }
-    layout->addWidget(m_metaTextLabel);
+    m_resetUrlTimer = new QTimer(this);
+    m_resetUrlTimer->setInterval(1000);
+    m_resetUrlTimer->setSingleShot(true);
+    connect(m_resetUrlTimer, SIGNAL(timeout()),
+            this, SLOT(reset()));

 
 

-    // ensure that widgets in the information side bar are aligned towards the top
-    layout->addStretch(1);
-    setLayout(layout);
+    Q_ASSERT(m_urlChangedTimer->interval() < m_infoTimer->interval());
+    Q_ASSERT(m_urlChangedTimer->interval() < m_resetUrlTimer->interval());

 
     org::kde::KDirNotify* dirNotify = new org::kde::KDirNotify(QString(), QString(),
                                                                QDBusConnection::sessionBus(), this);
 
     org::kde::KDirNotify* dirNotify = new org::kde::KDirNotify(QString(), QString(),
                                                                QDBusConnection::sessionBus(), this);

-    connect(dirNotify, SIGNAL(FileRenamed(QString, QString)), SLOT(slotFileRenamed(QString, QString)));
+    connect(dirNotify, SIGNAL(FileRenamed(QString,QString)), SLOT(slotFileRenamed(QString,QString)));

     connect(dirNotify, SIGNAL(FilesAdded(QString)), SLOT(slotFilesAdded(QString)));
     connect(dirNotify, SIGNAL(FilesChanged(QStringList)), SLOT(slotFilesChanged(QStringList)));
     connect(dirNotify, SIGNAL(FilesRemoved(QStringList)), SLOT(slotFilesRemoved(QStringList)));
     connect(dirNotify, SIGNAL(enteredDirectory(QString)), SLOT(slotEnteredDirectory(QString)));
     connect(dirNotify, SIGNAL(leftDirectory(QString)), SLOT(slotLeftDirectory(QString)));
 
     connect(dirNotify, SIGNAL(FilesAdded(QString)), SLOT(slotFilesAdded(QString)));
     connect(dirNotify, SIGNAL(FilesChanged(QStringList)), SLOT(slotFilesChanged(QStringList)));
     connect(dirNotify, SIGNAL(FilesRemoved(QStringList)), SLOT(slotFilesRemoved(QStringList)));
     connect(dirNotify, SIGNAL(enteredDirectory(QString)), SLOT(slotEnteredDirectory(QString)));
     connect(dirNotify, SIGNAL(leftDirectory(QString)), SLOT(slotLeftDirectory(QString)));
 

+    m_content = new InformationPanelContent(this);
+    connect(m_content, SIGNAL(urlActivated(KUrl)), this, SIGNAL(urlActivated(KUrl)));
+
+    QVBoxLayout* layout = new QVBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->addWidget(m_content);
+

     m_initialized = true;
 }
 
     m_initialized = true;
 }