mirror of
https://invent.kde.org/system/dolphin
synced 2024-09-17 15:31:20 +00:00
Update items if a Nepomuk property has been changed
If a Nepomuk property has been changed (e.g. by changing the rating in the Information Panel) the corresponding item in the view must be updated.
This commit is contained in:
parent
c9a6760f9f
commit
5d27eb81cd
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@ -88,7 +88,14 @@ kde4_add_library(dolphinprivate SHARED ${dolphinprivate_LIB_SRCS})
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target_link_libraries(dolphinprivate ${KDE4_KFILE_LIBS} konq ${KDE4_KNEWSTUFF3_LIBS})
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if (Nepomuk_FOUND)
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target_link_libraries(dolphinprivate ${NEPOMUK_LIBRARIES} ${NEPOMUK_QUERY_LIBRARIES} nepomukutils ${SOPRANO_LIBRARIES})
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target_link_libraries(
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dolphinprivate
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${NEPOMUK_LIBRARIES}
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${NEPOMUK_QUERY_LIBRARIES}
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nepomukdatamanagement
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nepomukutils
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${SOPRANO_LIBRARIES}
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)
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endif (Nepomuk_FOUND)
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if(X11_Xrender_FOUND)
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@ -198,6 +205,7 @@ if (Nepomuk_FOUND)
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${NEPOMUK_LIBRARIES}
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${SOPRANO_LIBRARIES}
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${NEPOMUK_QUERY_LIBRARIES}
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nepomukdatamanagement
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nepomukutils
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)
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endif (Nepomuk_FOUND)
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@ -35,6 +35,7 @@
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#ifdef HAVE_NEPOMUK
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#include "knepomukrolesprovider_p.h"
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#include "knepomukresourcewatcher_p.h"
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#endif
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// Required includes for subItemsCount():
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@ -79,7 +80,8 @@ KFileItemModelRolesUpdater::KFileItemModelRolesUpdater(KFileItemModel* model, QO
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m_changedItemsTimer(0),
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m_changedItems()
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#ifdef HAVE_NEPOMUK
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, m_resolveNepomukRoles(false)
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, m_nepomukResourceWatcher(0),
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m_nepomukUriItems()
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#endif
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{
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@ -229,19 +231,39 @@ void KFileItemModelRolesUpdater::setRoles(const QSet<QByteArray>& roles)
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#ifdef HAVE_NEPOMUK
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// Check whether there is at least one role that must be resolved
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// with the help of Nepomuk. If this is the case, m_resolveNepomukRoles
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// will be set to true and the (quite expensive) resolving will be done
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// in KFileItemModelRolesUpdater::rolesData().
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// with the help of Nepomuk. If this is the case, a (quite expensive)
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// resolving will be done in KFileItemModelRolesUpdater::rolesData() and
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// the role gets watched for changes.
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const KNepomukRolesProvider& rolesProvider = KNepomukRolesProvider::instance();
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m_resolveNepomukRoles = false;
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bool hasNepomukRole = false;
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QSetIterator<QByteArray> it(roles);
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while (it.hasNext()) {
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const QByteArray& role = it.next();
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if (rolesProvider.isNepomukRole(role)) {
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m_resolveNepomukRoles = true;
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hasNepomukRole = true;
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break;
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}
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}
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if (hasNepomukRole && !m_nepomukResourceWatcher) {
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Q_ASSERT(m_nepomukUriItems.isEmpty());
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m_nepomukResourceWatcher = new Nepomuk::ResourceWatcher(this);
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connect(m_nepomukResourceWatcher, SIGNAL(propertyChanged(Nepomuk::Resource,Nepomuk::Types::Property,QVariantList,QVariantList)),
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this, SLOT(applyChangedNepomukRoles(Nepomuk::Resource)));
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connect(m_nepomukResourceWatcher, SIGNAL(propertyRemoved(Nepomuk::Resource,Nepomuk::Types::Property,QVariant)),
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this, SLOT(applyChangedNepomukRoles(Nepomuk::Resource)));
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connect(m_nepomukResourceWatcher, SIGNAL(propertyAdded(Nepomuk::Resource,Nepomuk::Types::Property,QVariant)),
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this, SLOT(applyChangedNepomukRoles(Nepomuk::Resource)));
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connect(m_nepomukResourceWatcher, SIGNAL(resourceCreated(Nepomuk::Resource,QList<QUrl>)),
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this, SLOT(applyChangedNepomukRoles(Nepomuk::Resource)));
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connect(m_nepomukResourceWatcher, SIGNAL(resourceRemoved(QUrl,QList<QUrl>)),
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this, SLOT(applyChangedNepomukRoles(Nepomuk::Resource)));
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} else if (!hasNepomukRole && m_nepomukResourceWatcher) {
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delete m_nepomukResourceWatcher;
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m_nepomukResourceWatcher = 0;
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m_nepomukUriItems.clear();
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}
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#endif
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if (m_paused) {
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@ -275,6 +297,30 @@ void KFileItemModelRolesUpdater::slotItemsInserted(const KItemRangeList& itemRan
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void KFileItemModelRolesUpdater::slotItemsRemoved(const KItemRangeList& itemRanges)
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{
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Q_UNUSED(itemRanges);
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#ifdef HAVE_NEPOMUK
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if (m_nepomukResourceWatcher) {
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// Don't let the ResourceWatcher watch for removed items
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if (m_model->count() == 0) {
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m_nepomukResourceWatcher->setResources(QList<Nepomuk::Resource>());
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m_nepomukUriItems.clear();
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} else {
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QList<Nepomuk::Resource> newResources;
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const QList<Nepomuk::Resource> oldResources = m_nepomukResourceWatcher->resources();
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foreach (const Nepomuk::Resource& resource, oldResources) {
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const QUrl uri = resource.resourceUri();
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const KUrl itemUrl = m_nepomukUriItems.value(uri);
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if (m_model->index(itemUrl) >= 0) {
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newResources.append(resource);
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} else {
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m_nepomukUriItems.remove(uri);
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}
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}
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m_nepomukResourceWatcher->setResources(newResources);
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}
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}
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#endif
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m_firstVisibleIndex = 0;
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m_lastVisibleIndex = -1;
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if (!hasPendingRoles()) {
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@ -448,6 +494,31 @@ void KFileItemModelRolesUpdater::resolveChangedItems()
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startUpdating(itemRanges);
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}
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void KFileItemModelRolesUpdater::applyChangedNepomukRoles(const Nepomuk::Resource& resource)
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{
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#ifdef HAVE_NEPOMUK
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const KUrl itemUrl = m_nepomukUriItems.value(resource.resourceUri());
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const KFileItem item = m_model->fileItem(itemUrl);
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QHash<QByteArray, QVariant> data = rolesData(item);
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const KNepomukRolesProvider& rolesProvider = KNepomukRolesProvider::instance();
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QHashIterator<QByteArray, QVariant> it(rolesProvider.roleValues(resource, m_roles));
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while (it.hasNext()) {
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it.next();
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data.insert(it.key(), it.value());
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}
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disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
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this, SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
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const int index = m_model->index(item);
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m_model->setData(index, data);
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connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
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this, SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
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#else
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Q_UNUSED(resource);
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#endif
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}
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void KFileItemModelRolesUpdater::startUpdating(const KItemRangeList& itemRanges)
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{
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// If no valid index range is given assume that all items are visible.
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@ -780,13 +851,31 @@ QHash<QByteArray, QVariant> KFileItemModelRolesUpdater::rolesData(const KFileIte
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data.insert("iconOverlays", item.overlays());
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#ifdef HAVE_NEPOMUK
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if (m_resolveNepomukRoles) {
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if (m_nepomukResourceWatcher) {
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const KNepomukRolesProvider& rolesProvider = KNepomukRolesProvider::instance();
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QHashIterator<QByteArray, QVariant> it(rolesProvider.roleValues(item.url(), m_roles));
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Nepomuk::Resource resource(item.url());
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QHashIterator<QByteArray, QVariant> it(rolesProvider.roleValues(resource, m_roles));
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while (it.hasNext()) {
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it.next();
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data.insert(it.key(), it.value());
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}
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QUrl uri = resource.resourceUri();
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if (uri.isEmpty()) {
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// TODO: Is there another way to explicitly create a resource?
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// We need a resource to be able to track it for changes.
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resource.setRating(0);
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uri = resource.resourceUri();
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}
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if (!uri.isEmpty() && !m_nepomukUriItems.contains(uri)) {
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// TODO: Calling stop()/start() is a workaround until
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// ResourceWatcher has been fixed.
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m_nepomukResourceWatcher->stop();
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m_nepomukResourceWatcher->addResource(resource);
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m_nepomukResourceWatcher->start();
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m_nepomukUriItems.insert(uri, item.url());
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}
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}
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#endif
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@ -21,11 +21,12 @@
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#define KFILEITEMMODELROLESUPDATER_H
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#include <config-nepomuk.h>
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#include <libdolphin_export.h>
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#include <KFileItem>
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#include <kitemviews/kitemmodelbase.h>
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#include <libdolphin_export.h>
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#include <QObject>
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#include <QSet>
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#include <QSize>
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@ -36,6 +37,21 @@ class KJob;
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class QPixmap;
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class QTimer;
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#ifdef HAVE_NEPOMUK
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namespace Nepomuk
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{
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class ResourceWatcher;
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class Resource;
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}
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#else
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// Required for the slot applyChangedNepomukRoles() that
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// cannot be ifdefined due to moc.
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namespace Nepomuk
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{
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class Resource;
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}
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#endif
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/**
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* @brief Resolves expensive roles asynchronously and applies them to the KFileItemModel.
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*
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@ -133,6 +149,8 @@ private slots:
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*/
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void resolveChangedItems();
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void applyChangedNepomukRoles(const Nepomuk::Resource& resource);
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private:
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/**
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* Updates the roles for the given item ranges. The roles for the currently
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@ -207,11 +225,9 @@ private:
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QSet<KFileItem> m_changedItems;
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#ifdef HAVE_NEPOMUK
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// True if roles must be resolved with the help of Nepomuk inside
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// KFileItemModelRolesUpdater::rolesData().
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bool m_resolveNepomukRoles;
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Nepomuk::ResourceWatcher* m_nepomukResourceWatcher;
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mutable QHash<QUrl, KUrl> m_nepomukUriItems;
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#endif
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};
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#endif
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40
src/kitemviews/knepomukdatamanagement_export_p.h
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40
src/kitemviews/knepomukdatamanagement_export_p.h
Normal file
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@ -0,0 +1,40 @@
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/* This file is part of the KDE project
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Copyright (C) 2007 David Faure <faure@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef NEPOMUKDATAMANAGEMENT_EXPORT_H
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#define NEPOMUKDATAMANAGEMENT_EXPORT_H
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/* needed for KDE_EXPORT and KDE_IMPORT macros */
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#include <kdemacros.h>
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#ifndef NEPOMUK_DATA_MANAGEMENT_EXPORT
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# if defined(MAKE_NEPOMUKDATAMANAGEMENT_LIB)
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/* We are building this library */
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# define NEPOMUK_DATA_MANAGEMENT_EXPORT KDE_EXPORT
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# else
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/* We are using this library */
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# define NEPOMUK_DATA_MANAGEMENT_EXPORT KDE_IMPORT
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# endif
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#endif
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# ifndef NEPOMUK_DATA_MANAGEMENT_EXPORT_DEPRECATED
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# define NEPOMUK_DATA_MANAGEMENT_EXPORT_DEPRECATED KDE_DEPRECATED NEPOMUK_DATA_MANAGEMENT_EXPORT
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# endif
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#endif
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288
src/kitemviews/knepomukresourcewatcher_p.h
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288
src/kitemviews/knepomukresourcewatcher_p.h
Normal file
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/*
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This file is part of the Nepomuk KDE project.
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Copyright (C) 2011 Vishesh Handa <handa.vish@gmail.com>
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Copyright (C) 2011 Sebastian Trueg <trueg@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef RESOURCEWATCHER_H
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#define RESOURCEWATCHER_H
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#include <Nepomuk/Types/Class>
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#include <Nepomuk/Types/Property>
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#include <Nepomuk/Resource>
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#include <QtDBus/QDBusVariant>
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#include <QtCore/QVariant>
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#include "knepomukdatamanagement_export_p.h"
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namespace Nepomuk {
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/**
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* \class ResourceWatcher resourcewatcher.h
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*
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* \brief Selectively monitor the nepomuk repository for changes.
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*
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* Resources may be monitored on the basis of types, properties, and uris.
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*
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* Changes may be monitored in one of the following ways:
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* -# By resources -
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* Specify the exact resources that should be watched. Any changes made to the specified resources
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* (Excluding \ref nepomuk_dms_metadata) will be notified through the propertyAdded() and propertyRemoved()
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* signals. Notifications will also be sent if any of the watched resources is deleted.
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* -# By resources and properties -
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* Specify the exact resources and their properties. Any changes made to the specified resources
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* which touch one of the specified properties will be notified through the propertyAdded() and propertyRemoved()
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* signals.
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* -# By types -
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* Specific types may be specified via add/setType. If types are set, then notifications will be
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* sent for all new resources of that type. This includes property changes and resource creation and removal.
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* TODO: add flags that allow to only watch for resource creation and removal.
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* -# By types and properties -
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* Both the types and properties may be specified. Notifications will be sent for property changes
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* in resource with the specified types.
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*
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* \section nepomuk_rw_examples Resource Watcher Usage Example
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*
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* The following code creates a new ResourceWatcher, configures it to listen to changes on the \c nmm:performer
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* property on one specific resource \c res.
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*
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* \code
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* Nepomuk::ResourceWatcher* watcher = new Nepomuk::ResourceWatcher(this);
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* watcher->addResource(res);
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* watcher->addProperty(NMM:performer());
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* connect(watcher, SIGNAL(propertyAdded(Nepomuk::Resource, Nepomuk::Types::Property, QVariant)),
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* this, SLOT(slotPropertyChanged()));
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* connect(watcher, SIGNAL(propertyRemoved(Nepomuk::Resource, Nepomuk::Types::Property, QVariant)),
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* this, SLOT(slotPropertyChanged()));
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* rwatcher->start();
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* \endcode
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*
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* \author Vishesh Handa <handa.vish@gmail.com>, Sebastian Trueg <trueg@kde.org>
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*
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* \ingroup nepomuk_datamanagement
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*/
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class NEPOMUK_DATA_MANAGEMENT_EXPORT ResourceWatcher : public QObject
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{
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Q_OBJECT
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public:
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/**
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* \brief Create a new %ResourceWatcher instance.
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*
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* This instance will not emit any signals before it has been configured
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* and started.
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*/
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ResourceWatcher( QObject* parent = 0 );
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/**
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* \brief Destructor.
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*/
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virtual ~ResourceWatcher();
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/**
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* \brief Add a type to be watched.
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*
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* Every resource of this type will be watched for changes.
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*
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* \sa setTypes()
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*/
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void addType( const Types::Class & type );
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/**
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* \brief Add a resource to be watched.
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*
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* Every change to this resource will be
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* signalled, depending on the configured properties().
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*
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* \sa setResources()
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*/
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void addResource( const Nepomuk::Resource & res );
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/**
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* \brief Add a property to be watched.
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*
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* Every change to a value of this property
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* will be signalled, depending on the configured resources() or types().
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*
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* \sa setProperties()
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*/
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void addProperty( const Types::Property & property );
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/**
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* \brief Set the types to be watched.
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*
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* Every resource having one of these types will be watched for changes.
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*
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* \sa addType()
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*/
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void setTypes( const QList<Types::Class> & types_ );
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/**
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* \brief Set the resources to be watched.
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*
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* Every change to one of these resources will be
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* signalled, depending on the configured properties().
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*
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* \sa addResource()
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*/
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void setResources( const QList<Nepomuk::Resource> & resources_ );
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/**
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* \brief Set the properties to be watched.
|
||||
*
|
||||
* Every change to a value of any of these properties
|
||||
* will be signalled, depending on the configured resources() or types().
|
||||
*
|
||||
* \sa addProperty()
|
||||
*/
|
||||
void setProperties( const QList<Types::Property> & properties_ );
|
||||
|
||||
/**
|
||||
* \brief The types that have been configured via addType() and setTypes().
|
||||
*
|
||||
* Every resource having one of these types will be watched
|
||||
* for changes.
|
||||
*/
|
||||
QList<Types::Class> types() const;
|
||||
|
||||
/**
|
||||
* \brief The resources that have been configured via addResource() and setResources().
|
||||
*
|
||||
* Every change to one of these resources will be
|
||||
* signalled, depending on the configured properties().
|
||||
*/
|
||||
QList<Nepomuk::Resource> resources() const;
|
||||
|
||||
/**
|
||||
* \brief The properties that have been configured via addProperty() and setProperties().
|
||||
*
|
||||
* Every change to a value of any of these properties
|
||||
* will be signalled, depending on the configured resources() or types().
|
||||
*/
|
||||
QList<Types::Property> properties() const;
|
||||
|
||||
public Q_SLOTS:
|
||||
/**
|
||||
* \brief Start the signalling of changes.
|
||||
*
|
||||
* Before calling this method no signal will be emitted. In
|
||||
* combination with stop() this allows to suspend the watching.
|
||||
* Calling start() multiple times has no effect.
|
||||
*/
|
||||
bool start();
|
||||
|
||||
/**
|
||||
* \brief Stop the signalling of changes.
|
||||
*
|
||||
* Allows to stop the watcher which has been started
|
||||
* via start(). Calling stop() multiple times has no effect.
|
||||
*/
|
||||
void stop();
|
||||
|
||||
Q_SIGNALS:
|
||||
/**
|
||||
* \brief This signal is emitted when a new resource is created.
|
||||
* \param resource The newly created resource.
|
||||
* \param types The types the new resource has. If types() have been configured this list will always
|
||||
* contain one of the configured types.
|
||||
*/
|
||||
void resourceCreated( const Nepomuk::Resource & resource, const QList<QUrl>& types ); //FIXME: Use either Resource or uri, not a mix
|
||||
|
||||
/**
|
||||
* \brief This signal is emitted when a resource is deleted.
|
||||
* \param uri The resource URI of the removed resource.
|
||||
* \param types The types the removed resource had. If types() have been configured this list will always
|
||||
* contain one of the configured types.
|
||||
*/
|
||||
void resourceRemoved( const QUrl & uri, const QList<QUrl>& types );
|
||||
|
||||
/**
|
||||
* \brief This signal is emitted when a type has been added to a resource. This does not include creation which
|
||||
* is signalled via resourceCreated(). It only applies to changes in a resource's types.
|
||||
* \param res The changed resource.
|
||||
* \param type The newly added type. If types() have been configured it will be one of them.
|
||||
*/
|
||||
void resourceTypeAdded( const Nepomuk::Resource & res, const Types::Class & type );
|
||||
|
||||
/**
|
||||
* \brief This signal is emitted when a type has been removed from a resource.
|
||||
*
|
||||
* This does not include removal of entire resources which is signalled via resourceRemoved().
|
||||
* It only applies to changes in a resource's types.
|
||||
* \param res The changed resource.
|
||||
* \param type The removed type. If types() have been configured it will be one of them.
|
||||
*/
|
||||
void resourceTypeRemoved( const Nepomuk::Resource & res, const Types::Class & type );
|
||||
|
||||
/**
|
||||
* \brief This signal is emitted when a property value is added.
|
||||
* \param resource The changed resource.
|
||||
* \param property The property which has a new value.
|
||||
* \param value The newly added property value.
|
||||
*/
|
||||
void propertyAdded( const Nepomuk::Resource & resource,
|
||||
const Nepomuk::Types::Property & property,
|
||||
const QVariant & value );
|
||||
|
||||
/**
|
||||
* \brief This signal is emitted when a property value is removed.
|
||||
* \param resource The changed resource.
|
||||
* \param property The property which was changed.
|
||||
* \param value The removed property value.
|
||||
*/
|
||||
void propertyRemoved( const Nepomuk::Resource & resource,
|
||||
const Nepomuk::Types::Property & property,
|
||||
const QVariant & value );
|
||||
|
||||
/**
|
||||
* \brief This signal is emitted when a property value is changed.
|
||||
*
|
||||
* This signal cannot be emitted for all changes. It doesn't work if a property is first
|
||||
* removed and then set, cause the Data Mangement Service does not maintain an internal
|
||||
* cache for the purpose of emitting the propertyChanged signal.
|
||||
*
|
||||
* Specially, since one could theoretically take forever between the removal and the
|
||||
* setting of the property.
|
||||
*
|
||||
* \param resource The changed resource.
|
||||
* \param property The property which was changed.
|
||||
* \param oldValue The removed property value.
|
||||
*/
|
||||
void propertyChanged( const Nepomuk::Resource & resource,
|
||||
const Nepomuk::Types::Property & property,
|
||||
const QVariantList & oldValue,
|
||||
const QVariantList & newValue );
|
||||
|
||||
private Q_SLOTS:
|
||||
void slotResourceCreated(const QString& res, const QStringList& types);
|
||||
void slotResourceRemoved(const QString& res, const QStringList& types);
|
||||
void slotResourceTypeAdded(const QString& res, const QString& type);
|
||||
void slotResourceTypeRemoved(const QString& res, const QString& type);
|
||||
void slotPropertyAdded(const QString& res, const QString& prop, const QDBusVariant& object);
|
||||
void slotPropertyRemoved(const QString& res, const QString& prop, const QDBusVariant& object);
|
||||
void slotPropertyChanged(const QString& res, const QString& prop,
|
||||
const QVariantList & oldObjs,
|
||||
const QVariantList & newObjs);
|
||||
private:
|
||||
class Private;
|
||||
Private * d;
|
||||
};
|
||||
}
|
||||
|
||||
#endif // RESOURCEWATCHER_H
|
|
@ -48,10 +48,9 @@ bool KNepomukRolesProvider::isNepomukRole(const QByteArray& role) const
|
|||
return m_roles.contains(role);
|
||||
}
|
||||
|
||||
QHash<QByteArray, QVariant> KNepomukRolesProvider::roleValues(const QUrl& url,
|
||||
QHash<QByteArray, QVariant> KNepomukRolesProvider::roleValues(const Nepomuk::Resource& resource,
|
||||
const QSet<QByteArray>& roles) const
|
||||
{
|
||||
const Nepomuk::Resource resource(url);
|
||||
if (!resource.isValid()) {
|
||||
return QHash<QByteArray, QVariant>();
|
||||
}
|
||||
|
|
|
@ -20,11 +20,16 @@
|
|||
#ifndef KNEPOMUKROLESPROVIDER_H
|
||||
#define KNEPOMUKROLESPROVIDER_H
|
||||
|
||||
#include <libdolphin_export.h>
|
||||
|
||||
#include <QHash>
|
||||
#include <QSet>
|
||||
#include <QUrl>
|
||||
|
||||
class QUrl;
|
||||
namespace Nepomuk
|
||||
{
|
||||
class Resource;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Allows accessing metadata of a file by providing KFileItemModel roles.
|
||||
|
@ -32,7 +37,7 @@ class QUrl;
|
|||
* Is a helper class for KFileItemModelRolesUpdater to retrieve roles that
|
||||
* are only accessible with Nepomuk.
|
||||
*/
|
||||
class KNepomukRolesProvider
|
||||
class LIBDOLPHINPRIVATE_EXPORT KNepomukRolesProvider
|
||||
{
|
||||
public:
|
||||
static KNepomukRolesProvider& instance();
|
||||
|
@ -47,7 +52,8 @@ public:
|
|||
* @return Values for the roles \a roles that can be determined from the file
|
||||
* with the URL \a url.
|
||||
*/
|
||||
QHash<QByteArray, QVariant> roleValues(const QUrl& url, const QSet<QByteArray>& roles) const;
|
||||
QHash<QByteArray, QVariant> roleValues(const Nepomuk::Resource& resource,
|
||||
const QSet<QByteArray>& roles) const;
|
||||
|
||||
protected:
|
||||
KNepomukRolesProvider();
|
||||
|
|
Loading…
Reference in a new issue