mirror of
https://invent.kde.org/system/dolphin
synced 2024-09-20 00:41:23 +00:00
The performance of updating the revision state of items depends on the used plugin. To prevent that Dolphin gets blocked by a slow plugin, the updating is delegated to a thread.
Still open issue: Applying the revision control property to the model is a bottleneck in QListView (a detailed description of the reason is in kdelibs/kfile/kfilepreviewgenerator.cpp, class LayoutBlocker). But the approach used in KFilePreviewGenerator destroys the textlayout in this case and is temporary disabled until I could track down the reason. svn path=/trunk/KDE/kdebase/apps/; revision=998492
This commit is contained in:
parent
93ce7f40e2
commit
a447eb391c
|
@ -26,15 +26,75 @@
|
|||
|
||||
#include <QAbstractProxyModel>
|
||||
#include <QAbstractItemView>
|
||||
#include <QListView>
|
||||
#include <QTimer>
|
||||
|
||||
/**
|
||||
* The performance of updating the revision state of items depends
|
||||
* on the used plugin. To prevent that Dolphin gets blocked by a
|
||||
* slow plugin, the updating is delegated to a thread.
|
||||
*/
|
||||
class LIBDOLPHINPRIVATE_EXPORT UpdateItemStatesThread : public QThread
|
||||
{
|
||||
public:
|
||||
UpdateItemStatesThread(QObject* parent);
|
||||
void setData(RevisionControlPlugin* plugin,
|
||||
const QList<RevisionControlObserver::ItemState>& itemStates);
|
||||
QList<RevisionControlObserver::ItemState> itemStates() const;
|
||||
|
||||
protected:
|
||||
virtual void run();
|
||||
|
||||
private:
|
||||
RevisionControlPlugin* m_plugin;
|
||||
QList<RevisionControlObserver::ItemState> m_itemStates;
|
||||
};
|
||||
|
||||
UpdateItemStatesThread::UpdateItemStatesThread(QObject* parent) :
|
||||
QThread(parent)
|
||||
{
|
||||
}
|
||||
|
||||
void UpdateItemStatesThread::setData(RevisionControlPlugin* plugin,
|
||||
const QList<RevisionControlObserver::ItemState>& itemStates)
|
||||
{
|
||||
m_plugin = plugin;
|
||||
m_itemStates = itemStates;
|
||||
}
|
||||
|
||||
void UpdateItemStatesThread::run()
|
||||
{
|
||||
Q_ASSERT(m_itemStates.count() > 0);
|
||||
Q_ASSERT(m_plugin != 0);
|
||||
|
||||
// it is assumed that all items have the same parent directory
|
||||
const QString directory = m_itemStates.first().item.url().directory(KUrl::AppendTrailingSlash);
|
||||
|
||||
if (m_plugin->beginRetrieval(directory)) {
|
||||
const int count = m_itemStates.count();
|
||||
for (int i = 0; i < count; ++i) {
|
||||
m_itemStates[i].revision = m_plugin->revisionState(m_itemStates[i].item);
|
||||
}
|
||||
m_plugin->endRetrieval();
|
||||
}
|
||||
}
|
||||
|
||||
QList<RevisionControlObserver::ItemState> UpdateItemStatesThread::itemStates() const
|
||||
{
|
||||
return m_itemStates;
|
||||
}
|
||||
|
||||
// ---
|
||||
|
||||
RevisionControlObserver::RevisionControlObserver(QAbstractItemView* view) :
|
||||
QObject(view),
|
||||
m_pendingItemStatesUpdate(false),
|
||||
m_view(view),
|
||||
m_dirLister(0),
|
||||
m_dolphinModel(0),
|
||||
m_dirVerificationTimer(0),
|
||||
m_plugin(0)
|
||||
m_plugin(0),
|
||||
m_updateItemStatesThread(0)
|
||||
{
|
||||
Q_ASSERT(view != 0);
|
||||
|
||||
|
@ -101,24 +161,70 @@ void RevisionControlObserver::verifyDirectory()
|
|||
}
|
||||
}
|
||||
|
||||
void RevisionControlObserver::applyUpdatedItemStates()
|
||||
{
|
||||
// Updating items with non-uniform item sizes is a serious bottleneck
|
||||
// in QListView. Temporary disable the non-uniform item sizes.
|
||||
QListView* listView = qobject_cast<QListView*>(m_view);
|
||||
bool uniformSizes = true;
|
||||
if (listView != 0) {
|
||||
uniformSizes = listView->uniformItemSizes();
|
||||
//listView->setUniformItemSizes(true); TODO: does not work as well as in KFilePreviewGenerator
|
||||
}
|
||||
|
||||
const QList<ItemState> itemStates = m_updateItemStatesThread->itemStates();
|
||||
foreach (const ItemState& itemState, itemStates) {
|
||||
m_dolphinModel->setData(itemState.index,
|
||||
QVariant(static_cast<int>(itemState.revision)),
|
||||
Qt::DecorationRole);
|
||||
}
|
||||
|
||||
if (listView != 0) {
|
||||
listView->setUniformItemSizes(uniformSizes);
|
||||
}
|
||||
|
||||
m_view->viewport()->repaint(); // TODO: this should not be necessary, as DolphinModel::setData() calls dataChanged()
|
||||
|
||||
if (m_pendingItemStatesUpdate) {
|
||||
m_pendingItemStatesUpdate = false;
|
||||
updateItemStates();
|
||||
}
|
||||
}
|
||||
|
||||
void RevisionControlObserver::updateItemStates()
|
||||
{
|
||||
Q_ASSERT(m_plugin != 0);
|
||||
const KUrl directory = m_dirLister->url();
|
||||
if (!m_plugin->beginRetrieval(directory.toLocalFile(KUrl::AddTrailingSlash))) {
|
||||
if (m_updateItemStatesThread == 0) {
|
||||
m_updateItemStatesThread = new UpdateItemStatesThread(this);
|
||||
connect(m_updateItemStatesThread, SIGNAL(finished()),
|
||||
this, SLOT(applyUpdatedItemStates()));
|
||||
}
|
||||
if (m_updateItemStatesThread->isRunning()) {
|
||||
// An update is currently ongoing. Wait until the thread has finished
|
||||
// the update (see applyUpdatedItemStates()).
|
||||
m_pendingItemStatesUpdate = true;
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
const int rowCount = m_dolphinModel->rowCount();
|
||||
for (int row = 0; row < rowCount; ++row) {
|
||||
const QModelIndex index = m_dolphinModel->index(row, DolphinModel::Revision);
|
||||
const KFileItem item = m_dolphinModel->itemForIndex(index);
|
||||
const RevisionControlPlugin::RevisionState revision = m_plugin->revisionState(item);
|
||||
m_dolphinModel->setData(index, QVariant(static_cast<int>(revision)), Qt::DecorationRole);
|
||||
if (rowCount > 0) {
|
||||
// Build a list of all items in the current directory and delegate
|
||||
// this list to the thread, which adjusts the revision states.
|
||||
QList<ItemState> itemStates;
|
||||
for (int row = 0; row < rowCount; ++row) {
|
||||
const QModelIndex index = m_dolphinModel->index(row, DolphinModel::Revision);
|
||||
|
||||
ItemState itemState;
|
||||
itemState.index = index;
|
||||
itemState.item = m_dolphinModel->itemForIndex(index);
|
||||
itemState.revision = RevisionControlPlugin::LocalRevision;
|
||||
|
||||
itemStates.append(itemState);
|
||||
}
|
||||
|
||||
m_updateItemStatesThread->setData(m_plugin, itemStates);
|
||||
m_updateItemStatesThread->start(); // applyUpdatedItemStates() is called when finished
|
||||
}
|
||||
m_view->viewport()->repaint(); // TODO: this should not be necessary, as DolphinModel::setData() calls dataChanged()
|
||||
|
||||
m_plugin->endRetrieval();
|
||||
}
|
||||
|
||||
#include "revisioncontrolobserver.moc"
|
||||
|
|
|
@ -22,14 +22,18 @@
|
|||
|
||||
#include <libdolphin_export.h>
|
||||
|
||||
#include <kfileitem.h>
|
||||
#include <revisioncontrolplugin.h>
|
||||
#include <QObject>
|
||||
#include <QPersistentModelIndex>
|
||||
#include <QString>
|
||||
|
||||
class DolphinModel;
|
||||
class KDirLister;
|
||||
class QAbstractItemView;
|
||||
class QThread;
|
||||
class QTimer;
|
||||
class RevisionControlPlugin;
|
||||
class UpdateItemStatesThread;
|
||||
|
||||
/**
|
||||
* @brief Observes all revision control plugins.
|
||||
|
@ -50,16 +54,31 @@ public:
|
|||
private slots:
|
||||
void delayedDirectoryVerification();
|
||||
void verifyDirectory();
|
||||
|
||||
void applyUpdatedItemStates();
|
||||
|
||||
private:
|
||||
void updateItemStates();
|
||||
|
||||
private:
|
||||
struct ItemState
|
||||
{
|
||||
QPersistentModelIndex index;
|
||||
KFileItem item;
|
||||
RevisionControlPlugin::RevisionState revision;
|
||||
};
|
||||
|
||||
bool m_pendingItemStatesUpdate;
|
||||
|
||||
QAbstractItemView* m_view;
|
||||
KDirLister* m_dirLister;
|
||||
DolphinModel* m_dolphinModel;
|
||||
|
||||
QTimer* m_dirVerificationTimer;
|
||||
|
||||
RevisionControlPlugin* m_plugin;
|
||||
UpdateItemStatesThread* m_updateItemStatesThread;
|
||||
|
||||
friend class UpdateItemStatesThread;
|
||||
};
|
||||
|
||||
#endif // REVISIONCONTROLOBSERVER_H
|
||||
|
|
Loading…
Reference in a new issue