-/***************************************************************************
- * Copyright (C) 2011 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 *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
- ***************************************************************************/
+/*****************************************************************************
+ * Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com> *
+ * Copyright (C) 2013 by Frank Reininghaus <frank78ac@googlemail.com> *
+ * Copyright (C) 2013 by Emmanuel Pescosta <emmanuelpescosta099@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 *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
+ *****************************************************************************/
#include "kfileitemmodel.h"
m_resortAllItemsTimer(0),
m_pendingItemsToInsert(),
m_groups(),
- m_expandedParentsCountRoot(UninitializedExpandedParentsCountRoot),
m_expandedDirs(),
m_urlsToExpand()
{
m_dirLister = new KFileItemModelDirLister(this);
- m_dirLister->setAutoUpdate(true);
m_dirLister->setDelayedMimeTypes(true);
const QWidget* parentWidget = qobject_cast<QWidget*>(parent);
connect(m_dirLister, SIGNAL(started(KUrl)), this, SIGNAL(directoryLoadingStarted()));
connect(m_dirLister, SIGNAL(canceled()), this, SLOT(slotCanceled()));
connect(m_dirLister, SIGNAL(completed(KUrl)), this, SLOT(slotCompleted()));
- connect(m_dirLister, SIGNAL(newItems(KFileItemList)), this, SLOT(slotNewItems(KFileItemList)));
+ connect(m_dirLister, SIGNAL(itemsAdded(KUrl,KFileItemList)), this, SLOT(slotItemsAdded(KUrl,KFileItemList)));
connect(m_dirLister, SIGNAL(itemsDeleted(KFileItemList)), this, SLOT(slotItemsDeleted(KFileItemList)));
connect(m_dirLister, SIGNAL(refreshItems(QList<QPair<KFileItem,KFileItem> >)), this, SLOT(slotRefreshItems(QList<QPair<KFileItem,KFileItem> >)));
connect(m_dirLister, SIGNAL(clear()), this, SLOT(slotClear()));
KFileItemModel::~KFileItemModel()
{
qDeleteAll(m_itemData);
- m_itemData.clear();
+ qDeleteAll(m_filteredItems.values());
}
void KFileItemModel::loadDirectory(const KUrl& url)
QHashIterator<QByteArray, QVariant> it(values);
while (it.hasNext()) {
it.next();
- const QByteArray role = it.key();
+ const QByteArray role = sharedValue(it.key());
const QVariant value = it.value();
if (currentValues[role] != value) {
const int index = it.next();
const KFileItem item = fileItem(index);
if (!item.isNull()) {
- urls << item.url();
+ urls << item.targetUrl();
bool isLocal;
mostLocalUrls << item.mostLocalUrl(isLocal);
// Update m_data with the changed requested roles
const int maxIndex = count() - 1;
for (int i = 0; i <= maxIndex; ++i) {
- m_itemData[i]->values = retrieveData(m_itemData.at(i)->item);
+ m_itemData[i]->values = retrieveData(m_itemData.at(i)->item, m_itemData.at(i)->parent);
}
kWarning() << "TODO: Emitting itemsChanged() with no information what has changed!";
}
QHash<QByteArray, QVariant> values;
- values.insert("isExpanded", expanded);
+ values.insert(sharedValue("isExpanded"), expanded);
if (!setData(index, values)) {
return false;
}
- const KUrl url = m_itemData.at(index)->item.url();
+ const KFileItem item = m_itemData.at(index)->item;
+ const KUrl url = item.url();
if (expanded) {
m_expandedDirs.insert(url);
m_dirLister->openUrl(url, KDirLister::Keep);
m_expandedDirs.remove(url);
m_dirLister->stop(url);
+ removeFilteredChildren(KFileItemList() << item);
- KFileItemList itemsToRemove;
- const int expandedParentsCount = data(index)["expandedParentsCount"].toInt();
- ++index;
- while (index < count() && data(index)["expandedParentsCount"].toInt() > expandedParentsCount) {
- itemsToRemove.append(m_itemData.at(index)->item);
- ++index;
- }
-
- QSet<KUrl> urlsToRemove;
- urlsToRemove.reserve(itemsToRemove.count() + 1);
- urlsToRemove.insert(url);
- foreach (const KFileItem& item, itemsToRemove) {
- KUrl url = item.url();
- url.adjustPath(KUrl::RemoveTrailingSlash);
- urlsToRemove.insert(url);
- }
-
- QSet<KFileItem>::iterator it = m_filteredItems.begin();
- while (it != m_filteredItems.end()) {
- const KUrl url = it->url();
- KUrl parentUrl = url.upUrl();
- parentUrl.adjustPath(KUrl::RemoveTrailingSlash);
-
- if (urlsToRemove.contains(parentUrl)) {
- it = m_filteredItems.erase(it);
- } else {
- ++it;
- }
- }
-
- removeItems(itemsToRemove);
+ const KFileItemList itemsToRemove = childItems(item);
+ removeFilteredChildren(itemsToRemove);
+ removeItems(itemsToRemove, DeleteItemData);
}
return true;
// Only filter non-expanded items as child items may never
// exist without a parent item
if (!itemData->values.value("isExpanded").toBool()) {
- if (!m_filter.matches(itemData->item)) {
- newFilteredItems.append(itemData->item);
- m_filteredItems.insert(itemData->item);
+ const KFileItem item = itemData->item;
+ if (!m_filter.matches(item)) {
+ newFilteredItems.append(item);
+ m_filteredItems.insert(item, itemData);
}
}
}
- removeItems(newFilteredItems);
+ removeItems(newFilteredItems, KeepItemData);
// Check which hidden items from m_filteredItems should
// get visible again and hence removed from m_filteredItems.
- KFileItemList newVisibleItems;
+ QList<ItemData*> newVisibleItems;
- QMutableSetIterator<KFileItem> it(m_filteredItems);
- while (it.hasNext()) {
- const KFileItem item = it.next();
- if (m_filter.matches(item)) {
- newVisibleItems.append(item);
- it.remove();
+ QHash<KFileItem, ItemData*>::iterator it = m_filteredItems.begin();
+ while (it != m_filteredItems.end()) {
+ if (m_filter.matches(it.key())) {
+ newVisibleItems.append(it.value());
+ it = m_filteredItems.erase(it);
+ } else {
+ ++it;
}
}
insertItems(newVisibleItems);
}
+void KFileItemModel::removeFilteredChildren(const KFileItemList& parentsList)
+{
+ if (m_filteredItems.isEmpty()) {
+ return;
+ }
+
+ // First, we put the parent items into a set to provide fast lookup
+ // while iterating over m_filteredItems and prevent quadratic
+ // complexity if there are N parents and N filtered items.
+ const QSet<KFileItem> parents = parentsList.toSet();
+
+ QHash<KFileItem, ItemData*>::iterator it = m_filteredItems.begin();
+ while (it != m_filteredItems.end()) {
+ const ItemData* parent = it.value()->parent;
+
+ if (parent && parents.contains(parent->item)) {
+ delete it.value();
+ it = m_filteredItems.erase(it);
+ } else {
+ ++it;
+ }
+ }
+}
+
QList<KFileItemModel::RoleInfo> KFileItemModel::rolesInformation()
{
static QList<RoleInfo> rolesInfo;
m_items.clear();
// Resort the items
- KFileItemModelSortAlgorithm::sort(this, m_itemData.begin(), m_itemData.end());
+ sort(m_itemData.begin(), m_itemData.end());
for (int i = 0; i < itemCount; ++i) {
m_items.insert(m_itemData.at(i)->item.url(), i);
}
emit directoryLoadingCanceled();
}
-void KFileItemModel::slotNewItems(const KFileItemList& items)
+void KFileItemModel::slotItemsAdded(const KUrl& directoryUrl, const KFileItemList& items)
{
Q_ASSERT(!items.isEmpty());
- if (m_requestRole[ExpandedParentsCountRole] && m_expandedParentsCountRoot >= 0) {
+ KUrl parentUrl = directoryUrl;
+ parentUrl.adjustPath(KUrl::RemoveTrailingSlash);
+
+ if (m_requestRole[ExpandedParentsCountRole]) {
// To be able to compare whether the new items may be inserted as children
// of a parent item the pending items must be added to the model first.
dispatchPendingItemsToInsert();
// KDirLister keeps the children of items that got expanded once even if
// they got collapsed again with KFileItemModel::setExpanded(false). So it must be
// checked whether the parent for new items is still expanded.
- KUrl parentUrl = item.url().upUrl();
- parentUrl.adjustPath(KUrl::RemoveTrailingSlash);
const int parentIndex = m_items.value(parentUrl, -1);
if (parentIndex >= 0 && !m_itemData[parentIndex]->values.value("isExpanded").toBool()) {
// The parent is not expanded.
}
}
+ QList<ItemData*> itemDataList = createItemDataList(parentUrl, items);
+
if (!m_filter.hasSetFilters()) {
- m_pendingItemsToInsert.append(items);
+ m_pendingItemsToInsert.append(itemDataList);
} else {
// The name or type filter is active. Hide filtered items
// before inserting them into the model and remember
// the filtered items in m_filteredItems.
- KFileItemList filteredItems;
- foreach (const KFileItem& item, items) {
- if (m_filter.matches(item)) {
- filteredItems.append(item);
+ foreach (ItemData* itemData, itemDataList) {
+ if (m_filter.matches(itemData->item)) {
+ m_pendingItemsToInsert.append(itemData);
} else {
- m_filteredItems.insert(item);
+ m_filteredItems.insert(itemData->item, itemData);
}
}
-
- m_pendingItemsToInsert.append(filteredItems);
}
if (useMaximumUpdateInterval() && !m_maximumUpdateIntervalTimer->isActive()) {
dispatchPendingItemsToInsert();
KFileItemList itemsToRemove = items;
- if (m_requestRole[ExpandedParentsCountRole] && m_expandedParentsCountRoot >= 0) {
+ if (m_requestRole[ExpandedParentsCountRole]) {
// Assure that removing a parent item also results in removing all children
foreach (const KFileItem& item, items) {
itemsToRemove.append(childItems(item));
if (!m_filteredItems.isEmpty()) {
foreach (const KFileItem& item, itemsToRemove) {
- m_filteredItems.remove(item);
- }
-
- if (m_requestRole[ExpandedParentsCountRole] && m_expandedParentsCountRoot >= 0) {
- // Remove all filtered children of deleted items. First, we put the
- // deleted URLs into a set to provide fast lookup while iterating
- // over m_filteredItems and prevent quadratic complexity if there
- // are N removed items and N filtered items.
- QSet<KUrl> urlsToRemove;
- urlsToRemove.reserve(itemsToRemove.count());
- foreach (const KFileItem& item, itemsToRemove) {
- KUrl url = item.url();
- url.adjustPath(KUrl::RemoveTrailingSlash);
- urlsToRemove.insert(url);
+ QHash<KFileItem, ItemData*>::iterator it = m_filteredItems.find(item);
+ if (it != m_filteredItems.end()) {
+ delete it.value();
+ m_filteredItems.erase(it);
}
+ }
- QSet<KFileItem>::iterator it = m_filteredItems.begin();
- while (it != m_filteredItems.end()) {
- const KUrl url = it->url();
- KUrl parentUrl = url.upUrl();
- parentUrl.adjustPath(KUrl::RemoveTrailingSlash);
-
- if (urlsToRemove.contains(parentUrl)) {
- it = m_filteredItems.erase(it);
- } else {
- ++it;
- }
- }
+ if (m_requestRole[ExpandedParentsCountRole]) {
+ removeFilteredChildren(itemsToRemove);
}
}
- removeItems(itemsToRemove);
+ removeItems(itemsToRemove, DeleteItemData);
}
void KFileItemModel::slotRefreshItems(const QList<QPair<KFileItem, KFileItem> >& items)
kDebug() << "Refreshing" << items.count() << "items";
#endif
- m_groups.clear();
-
// Get the indexes of all items that have been refreshed
QList<int> indexes;
indexes.reserve(items.count());
+ QSet<QByteArray> changedRoles;
+
QListIterator<QPair<KFileItem, KFileItem> > it(items);
while (it.hasNext()) {
const QPair<KFileItem, KFileItem>& itemPair = it.next();
// Keep old values as long as possible if they could not retrieved synchronously yet.
// The update of the values will be done asynchronously by KFileItemModelRolesUpdater.
- QHashIterator<QByteArray, QVariant> it(retrieveData(newItem));
+ QHashIterator<QByteArray, QVariant> it(retrieveData(newItem, m_itemData.at(index)->parent));
+ QHash<QByteArray, QVariant>& values = m_itemData[index]->values;
while (it.hasNext()) {
it.next();
- m_itemData[index]->values.insert(it.key(), it.value());
+ const QByteArray& role = it.key();
+ if (values.value(role) != it.value()) {
+ values.insert(role, it.value());
+ changedRoles.insert(role);
+ }
}
m_items.remove(oldItem.url());
itemRangeList.append(KItemRange(rangeIndex, rangeCount));
}
- emit itemsChanged(itemRangeList, m_roles);
+ emit itemsChanged(itemRangeList, changedRoles);
- resortAllItems();
+ if (changedRoles.contains(sortRole())) {
+ resortAllItems();
+ }
}
void KFileItemModel::slotClear()
kDebug() << "Clearing all items";
#endif
+ qDeleteAll(m_filteredItems.values());
m_filteredItems.clear();
m_groups.clear();
m_resortAllItemsTimer->stop();
m_pendingItemsToInsert.clear();
- m_expandedParentsCountRoot = UninitializedExpandedParentsCountRoot;
-
const int removedCount = m_itemData.count();
if (removedCount > 0) {
qDeleteAll(m_itemData);
}
}
-void KFileItemModel::insertItems(const KFileItemList& items)
+void KFileItemModel::insertItems(QList<ItemData*>& newItems)
{
- if (items.isEmpty()) {
+ if (newItems.isEmpty()) {
return;
}
- if (m_sortRole == TypeRole) {
- // Try to resolve the MIME-types synchronously to prevent a reordering of
- // the items when sorting by type (per default MIME-types are resolved
- // asynchronously by KFileItemModelRolesUpdater).
- determineMimeTypes(items, 200);
- }
-
#ifdef KFILEITEMMODEL_DEBUG
QElapsedTimer timer;
timer.start();
kDebug() << "===========================================================";
- kDebug() << "Inserting" << items.count() << "items";
+ kDebug() << "Inserting" << newItems.count() << "items";
#endif
m_groups.clear();
- QList<ItemData*> sortedItems = createItemDataList(items);
- KFileItemModelSortAlgorithm::sort(this, sortedItems.begin(), sortedItems.end());
+ sort(newItems.begin(), newItems.end());
#ifdef KFILEITEMMODEL_DEBUG
kDebug() << "[TIME] Sorting:" << timer.elapsed();
#endif
KItemRangeList itemRanges;
- int targetIndex = 0;
- int sourceIndex = 0;
- int insertedAtIndex = -1; // Index for the current item-range
- int insertedCount = 0; // Count for the current item-range
- int previouslyInsertedCount = 0; // Sum of previously inserted items for all ranges
- while (sourceIndex < sortedItems.count()) {
- // Find target index from m_items to insert the current item
- // in a sorted order
- const int previousTargetIndex = targetIndex;
- while (targetIndex < m_itemData.count()) {
- if (!lessThan(m_itemData.at(targetIndex), sortedItems.at(sourceIndex))) {
- break;
+ const int existingItemCount = m_itemData.count();
+ const int newItemCount = newItems.count();
+ const int totalItemCount = existingItemCount + newItemCount;
+
+ if (existingItemCount == 0) {
+ // Optimization for the common special case that there are no
+ // items in the model yet. Happens, e.g., when entering a folder.
+ m_itemData = newItems;
+ itemRanges << KItemRange(0, newItemCount);
+ } else {
+ m_itemData.reserve(totalItemCount);
+ for (int i = existingItemCount; i < totalItemCount; ++i) {
+ m_itemData.append(0);
+ }
+
+ // We build the new list m_items in reverse order to minimize
+ // the number of moves and guarantee O(N) complexity.
+ int targetIndex = totalItemCount - 1;
+ int sourceIndexExistingItems = existingItemCount - 1;
+ int sourceIndexNewItems = newItemCount - 1;
+
+ int rangeCount = 0;
+
+ while (sourceIndexNewItems >= 0) {
+ ItemData* newItem = newItems.at(sourceIndexNewItems);
+ if (sourceIndexExistingItems >= 0 && lessThan(newItem, m_itemData.at(sourceIndexExistingItems))) {
+ // Move an existing item to its new position. If any new items
+ // are behind it, push the item range to itemRanges.
+ if (rangeCount > 0) {
+ itemRanges << KItemRange(sourceIndexExistingItems + 1, rangeCount);
+ rangeCount = 0;
+ }
+
+ m_itemData[targetIndex] = m_itemData.at(sourceIndexExistingItems);
+ --sourceIndexExistingItems;
+ } else {
+ // Insert a new item into the list.
+ ++rangeCount;
+ m_itemData[targetIndex] = newItem;
+ --sourceIndexNewItems;
}
- ++targetIndex;
+ --targetIndex;
}
- if (targetIndex - previousTargetIndex > 0 && insertedAtIndex >= 0) {
- itemRanges << KItemRange(insertedAtIndex, insertedCount);
- previouslyInsertedCount += insertedCount;
- insertedAtIndex = targetIndex - previouslyInsertedCount;
- insertedCount = 0;
+ // Push the final item range to itemRanges.
+ if (rangeCount > 0) {
+ itemRanges << KItemRange(sourceIndexExistingItems + 1, rangeCount);
}
- // Insert item at the position targetIndex by transferring
- // the ownership of the item-data from sortedItems to m_itemData.
- // m_items will be inserted after the loop (see comment below)
- m_itemData.insert(targetIndex, sortedItems.at(sourceIndex));
- ++insertedCount;
-
- if (insertedAtIndex < 0) {
- insertedAtIndex = targetIndex;
- Q_ASSERT(previouslyInsertedCount == 0);
- }
- ++targetIndex;
- ++sourceIndex;
+ // Note that itemRanges is still sorted in reverse order.
+ std::reverse(itemRanges.begin(), itemRanges.end());
}
- // The indexes of all m_items must be adjusted, not only the index
- // of the new items
- const int itemDataCount = m_itemData.count();
- for (int i = 0; i < itemDataCount; ++i) {
+ // The indexes starting from the first inserted item must be adjusted.
+ m_items.reserve(totalItemCount);
+ for (int i = itemRanges.front().index; i < totalItemCount; ++i) {
m_items.insert(m_itemData.at(i)->item.url(), i);
}
- itemRanges << KItemRange(insertedAtIndex, insertedCount);
emit itemsInserted(itemRanges);
#ifdef KFILEITEMMODEL_DEBUG
- kDebug() << "[TIME] Inserting of" << items.count() << "items:" << timer.elapsed();
+ kDebug() << "[TIME] Inserting of" << newItems.count() << "items:" << timer.elapsed();
#endif
}
-void KFileItemModel::removeItems(const KFileItemList& items)
+static KItemRangeList sortedIndexesToKItemRangeList(const QList<int>& sortedNumbers)
{
- if (items.isEmpty()) {
- return;
+ if (sortedNumbers.empty()) {
+ return KItemRangeList();
+ }
+
+ KItemRangeList result;
+
+ QList<int>::const_iterator it = sortedNumbers.begin();
+ int index = *it;
+ int count = 1;
+
+ ++it;
+
+ QList<int>::const_iterator end = sortedNumbers.end();
+ while (it != end) {
+ if (*it == index + count) {
+ ++count;
+ } else {
+ result << KItemRange(index, count);
+ index = *it;
+ count = 1;
+ }
+ ++it;
}
+ result << KItemRange(index, count);
+ return result;
+}
+
+void KFileItemModel::removeItems(const KFileItemList& items, RemoveItemsBehavior behavior)
+{
#ifdef KFILEITEMMODEL_DEBUG
kDebug() << "Removing " << items.count() << "items";
#endif
m_groups.clear();
- QList<ItemData*> sortedItems;
- sortedItems.reserve(items.count());
+ // Step 1: Determine the indexes of the removed items, remove them from
+ // the hash m_items, and free the ItemData.
+ QList<int> indexesToRemove;
+ indexesToRemove.reserve(items.count());
foreach (const KFileItem& item, items) {
- const int index = m_items.value(item.url(), -1);
+ const KUrl url = item.url();
+ const int index = m_items.value(url, -1);
if (index >= 0) {
- sortedItems.append(m_itemData.at(index));
- }
- }
- KFileItemModelSortAlgorithm::sort(this, sortedItems.begin(), sortedItems.end());
+ indexesToRemove.append(index);
- QList<int> indexesToRemove;
- indexesToRemove.reserve(items.count());
+ // Prevent repeated expensive rehashing by using QHash::erase(),
+ // rather than QHash::remove().
+ QHash<KUrl, int>::iterator it = m_items.find(url);
+ m_items.erase(it);
- // Calculate the item ranges that will get deleted
- KItemRangeList itemRanges;
- int removedAtIndex = -1;
- int removedCount = 0;
- int targetIndex = 0;
- foreach (const ItemData* itemData, sortedItems) {
- const KFileItem& itemToRemove = itemData->item;
-
- const int previousTargetIndex = targetIndex;
- while (targetIndex < m_itemData.count()) {
- if (m_itemData.at(targetIndex)->item.url() == itemToRemove.url()) {
- break;
+ if (behavior == DeleteItemData) {
+ delete m_itemData.at(index);
}
- ++targetIndex;
- }
- if (targetIndex >= m_itemData.count()) {
- kWarning() << "Item that should be deleted has not been found!";
- return;
- }
- if (targetIndex - previousTargetIndex > 0 && removedAtIndex >= 0) {
- itemRanges << KItemRange(removedAtIndex, removedCount);
- removedAtIndex = targetIndex;
- removedCount = 0;
+ m_itemData[index] = 0;
}
+ }
- indexesToRemove.append(targetIndex);
- if (removedAtIndex < 0) {
- removedAtIndex = targetIndex;
- }
- ++removedCount;
- ++targetIndex;
+ if (indexesToRemove.isEmpty()) {
+ return;
}
- // Delete the items
- for (int i = indexesToRemove.count() - 1; i >= 0; --i) {
- const int indexToRemove = indexesToRemove.at(i);
- ItemData* data = m_itemData.at(indexToRemove);
+ std::sort(indexesToRemove.begin(), indexesToRemove.end());
- m_items.remove(data->item.url());
+ // Step 2: Remove the ItemData pointers from the list m_itemData.
+ const KItemRangeList itemRanges = sortedIndexesToKItemRangeList(indexesToRemove);
+ int target = itemRanges.at(0).index;
+ int source = itemRanges.at(0).index + itemRanges.at(0).count;
+ int nextRange = 1;
- delete data;
- m_itemData.removeAt(indexToRemove);
- }
+ const int oldItemDataCount = m_itemData.count();
+ while (source < oldItemDataCount) {
+ m_itemData[target] = m_itemData[source];
+ ++target;
+ ++source;
- // The indexes of all m_items must be adjusted, not only the index
- // of the removed items
- const int itemDataCount = m_itemData.count();
- for (int i = 0; i < itemDataCount; ++i) {
- m_items.insert(m_itemData.at(i)->item.url(), i);
+ if (nextRange < itemRanges.count() && source == itemRanges.at(nextRange).index) {
+ // Skip the items in the next removed range.
+ source += itemRanges.at(nextRange).count;
+ ++nextRange;
+ }
}
- if (count() <= 0) {
- m_expandedParentsCountRoot = UninitializedExpandedParentsCountRoot;
+ m_itemData.erase(m_itemData.end() - indexesToRemove.count(), m_itemData.end());
+
+ // Step 3: Adjust indexes in the hash m_items, starting from the
+ // index of the first removed item.
+ const int newItemDataCount = m_itemData.count();
+ for (int i = itemRanges.front().index; i < newItemDataCount; ++i) {
+ m_items.insert(m_itemData.at(i)->item.url(), i);
}
- itemRanges << KItemRange(removedAtIndex, removedCount);
emit itemsRemoved(itemRanges);
}
-QList<KFileItemModel::ItemData*> KFileItemModel::createItemDataList(const KFileItemList& items) const
+QList<KFileItemModel::ItemData*> KFileItemModel::createItemDataList(const KUrl& parentUrl, const KFileItemList& items) const
{
+ if (m_sortRole == TypeRole) {
+ // Try to resolve the MIME-types synchronously to prevent a reordering of
+ // the items when sorting by type (per default MIME-types are resolved
+ // asynchronously by KFileItemModelRolesUpdater).
+ determineMimeTypes(items, 200);
+ }
+
+ const int parentIndex = m_items.value(parentUrl, -1);
+ ItemData* parentItem = parentIndex < 0 ? 0 : m_itemData.at(parentIndex);
+
QList<ItemData*> itemDataList;
itemDataList.reserve(items.count());
foreach (const KFileItem& item, items) {
ItemData* itemData = new ItemData();
itemData->item = item;
- itemData->values = retrieveData(item);
- itemData->parent = 0;
-
- const bool determineParent = m_requestRole[ExpandedParentsCountRole]
- && itemData->values["expandedParentsCount"].toInt() > 0;
- if (determineParent) {
- KUrl parentUrl = item.url().upUrl();
- parentUrl.adjustPath(KUrl::RemoveTrailingSlash);
- const int parentIndex = m_items.value(parentUrl, -1);
- if (parentIndex >= 0) {
- itemData->parent = m_itemData.at(parentIndex);
- } else {
- kWarning() << "Parent item not found for" << item.url();
- }
- }
-
+ itemData->values = retrieveData(item, parentItem);
+ itemData->parent = parentItem;
itemDataList.append(itemData);
}
// The m_expandedParentsCountRoot may not get reset before all items with
// a bigger count have been removed.
- removeItems(expandedItems);
+ removeItems(expandedItems, DeleteItemData);
- m_expandedParentsCountRoot = UninitializedExpandedParentsCountRoot;
m_expandedDirs.clear();
}
return roles.value(roleType);
}
-QHash<QByteArray, QVariant> KFileItemModel::retrieveData(const KFileItem& item) const
+QHash<QByteArray, QVariant> KFileItemModel::retrieveData(const KFileItem& item, const ItemData* parent) const
{
// It is important to insert only roles that are fast to retrieve. E.g.
// KFileItem::iconName() can be very expensive if the MIME-type is unknown
// and hence will be retrieved asynchronously by KFileItemModelRolesUpdater.
QHash<QByteArray, QVariant> data;
- data.insert("url", item.url());
+ data.insert(sharedValue("url"), item.url());
const bool isDir = item.isDir();
if (m_requestRole[IsDirRole]) {
- data.insert("isDir", isDir);
+ data.insert(sharedValue("isDir"), isDir);
}
if (m_requestRole[IsLinkRole]) {
const bool isLink = item.isLink();
- data.insert("isLink", isLink);
+ data.insert(sharedValue("isLink"), isLink);
}
if (m_requestRole[NameRole]) {
- data.insert("text", item.text());
+ data.insert(sharedValue("text"), item.text());
}
if (m_requestRole[SizeRole]) {
if (isDir) {
- data.insert("size", QVariant());
+ data.insert(sharedValue("size"), QVariant());
} else {
- data.insert("size", item.size());
+ data.insert(sharedValue("size"), item.size());
}
}
// having several thousands of items. Instead the formatting of the
// date-time will be done on-demand by the view when the date will be shown.
const KDateTime dateTime = item.time(KFileItem::ModificationTime);
- data.insert("date", dateTime.dateTime());
+ data.insert(sharedValue("date"), dateTime.dateTime());
}
if (m_requestRole[PermissionsRole]) {
- data.insert("permissions", item.permissionsString());
+ data.insert(sharedValue("permissions"), item.permissionsString());
}
if (m_requestRole[OwnerRole]) {
- data.insert("owner", item.user());
+ data.insert(sharedValue("owner"), item.user());
}
if (m_requestRole[GroupRole]) {
- data.insert("group", item.group());
+ data.insert(sharedValue("group"), item.group());
}
if (m_requestRole[DestinationRole]) {
if (destination.isEmpty()) {
destination = QLatin1String("-");
}
- data.insert("destination", destination);
+ data.insert(sharedValue("destination"), destination);
}
if (m_requestRole[PathRole]) {
const int index = path.lastIndexOf(item.text());
path = path.mid(0, index - 1);
- data.insert("path", path);
+ data.insert(sharedValue("path"), path);
}
if (m_requestRole[IsExpandableRole]) {
- data.insert("isExpandable", item.isDir() && item.url() == item.targetUrl());
+ data.insert(sharedValue("isExpandable"), item.isDir() && item.url() == item.targetUrl());
}
if (m_requestRole[ExpandedParentsCountRole]) {
- if (m_expandedParentsCountRoot == UninitializedExpandedParentsCountRoot) {
- const KUrl rootUrl = m_dirLister->url();
- const QString protocol = rootUrl.protocol();
- const bool forceExpandedParentsCountRoot = (protocol == QLatin1String("trash") ||
- protocol == QLatin1String("nepomuk") ||
- protocol == QLatin1String("remote") ||
- protocol.contains(QLatin1String("search")));
- if (forceExpandedParentsCountRoot) {
- m_expandedParentsCountRoot = ForceExpandedParentsCountRoot;
- } else {
- const QString rootDir = rootUrl.path(KUrl::AddTrailingSlash);
- m_expandedParentsCountRoot = rootDir.count('/');
- }
+ int level = 0;
+ if (parent) {
+ level = parent->values["expandedParentsCount"].toInt() + 1;
}
- if (m_expandedParentsCountRoot == ForceExpandedParentsCountRoot) {
- data.insert("expandedParentsCount", -1);
- } else {
- const QString dir = item.url().directory(KUrl::AppendTrailingSlash);
- const int level = dir.count('/') - m_expandedParentsCountRoot;
- data.insert("expandedParentsCount", level);
- }
+ data.insert(sharedValue("expandedParentsCount"), level);
}
if (item.isMimeTypeKnown()) {
- data.insert("iconName", item.iconName());
+ data.insert(sharedValue("iconName"), item.iconName());
if (m_requestRole[TypeRole]) {
- data.insert("type", item.mimeComment());
+ data.insert(sharedValue("type"), item.mimeComment());
}
}
{
int result = 0;
- if (m_expandedParentsCountRoot >= 0) {
- result = expandedParentsCountCompare(a, b);
- if (result != 0) {
- // The items have parents with different expansion levels
- return (sortOrder() == Qt::AscendingOrder) ? result < 0 : result > 0;
+ if (a->parent != b->parent) {
+ const int expansionLevelA = a->values.value("expandedParentsCount").toInt();
+ const int expansionLevelB = b->values.value("expandedParentsCount").toInt();
+
+ // If b has a higher expansion level than a, check if a is a parent
+ // of b, and make sure that both expansion levels are equal otherwise.
+ for (int i = expansionLevelB; i > expansionLevelA; --i) {
+ if (b->parent == a) {
+ return true;
+ }
+ b = b->parent;
+ }
+
+ // If a has a higher expansion level than a, check if b is a parent
+ // of a, and make sure that both expansion levels are equal otherwise.
+ for (int i = expansionLevelA; i > expansionLevelB; --i) {
+ if (a->parent == b) {
+ return false;
+ }
+ a = a->parent;
+ }
+
+ Q_ASSERT(a->values.value("expandedParentsCount").toInt() == b->values.value("expandedParentsCount").toInt());
+
+ // Compare the last parents of a and b which are different.
+ while (a->parent != b->parent) {
+ a = a->parent;
+ b = b->parent;
}
}
return (sortOrder() == Qt::AscendingOrder) ? result < 0 : result > 0;
}
+/**
+ * Helper class for KFileItemModel::sort().
+ */
+class KFileItemModelLessThan
+{
+public:
+ KFileItemModelLessThan(const KFileItemModel* model) :
+ m_model(model)
+ {
+ }
+
+ bool operator()(const KFileItemModel::ItemData* a, const KFileItemModel::ItemData* b) const
+ {
+ return m_model->lessThan(a, b);
+ }
+
+private:
+ const KFileItemModel* m_model;
+};
+
+void KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator begin,
+ QList<KFileItemModel::ItemData*>::iterator end) const
+{
+ KFileItemModelLessThan lessThan(this);
+
+ if (m_sortRole == NameRole) {
+ // Sorting by name can be expensive, in particular if natural sorting is
+ // enabled. Use all CPU cores to speed up the sorting process.
+ static const int numberOfThreads = QThread::idealThreadCount();
+ parallelMergeSort(begin, end, lessThan, numberOfThreads);
+ } else {
+ // Sorting by other roles is quite fast. Use only one thread to prevent
+ // problems caused by non-reentrant comparison functions, see
+ // https://bugs.kde.org/show_bug.cgi?id=312679
+ mergeSort(begin, end, lessThan);
+ }
+}
+
int KFileItemModel::sortRoleCompare(const ItemData* a, const ItemData* b) const
{
const KFileItem& itemA = a->item;
: QString::compare(a, b, Qt::CaseSensitive);
}
-int KFileItemModel::expandedParentsCountCompare(const ItemData* a, const ItemData* b) const
-{
- const KUrl urlA = a->item.url();
- const KUrl urlB = b->item.url();
- if (urlA.directory() == urlB.directory()) {
- // Both items have the same directory as parent
- return 0;
- }
-
- // Check whether one item is the parent of the other item
- if (urlA.isParentOf(urlB)) {
- return (sortOrder() == Qt::AscendingOrder) ? -1 : +1;
- } else if (urlB.isParentOf(urlA)) {
- return (sortOrder() == Qt::AscendingOrder) ? +1 : -1;
- }
-
- // Determine the maximum common path of both items and
- // remember the index in 'index'
- const QString pathA = urlA.path();
- const QString pathB = urlB.path();
-
- const int maxIndex = qMin(pathA.length(), pathB.length()) - 1;
- int index = 0;
- while (index <= maxIndex && pathA.at(index) == pathB.at(index)) {
- ++index;
- }
- if (index > maxIndex) {
- index = maxIndex;
- }
- while (index > 0 && (pathA.at(index) != QLatin1Char('/') || pathB.at(index) != QLatin1Char('/'))) {
- --index;
- }
-
- // Determine the first sub-path after the common path and
- // check whether it represents a directory or already a file
- bool isDirA = true;
- const QString subPathA = subPath(a->item, pathA, index, &isDirA);
- bool isDirB = true;
- const QString subPathB = subPath(b->item, pathB, index, &isDirB);
-
- if (m_sortDirsFirst || m_sortRole == SizeRole) {
- if (isDirA && !isDirB) {
- return (sortOrder() == Qt::AscendingOrder) ? -1 : +1;
- } else if (!isDirA && isDirB) {
- return (sortOrder() == Qt::AscendingOrder) ? +1 : -1;
- }
- }
-
- // Compare the items of the parents that represent the first
- // different path after the common path.
- const QString parentPathA = pathA.left(index) + subPathA;
- const QString parentPathB = pathB.left(index) + subPathB;
-
- const ItemData* parentA = a;
- while (parentA && parentA->item.url().path() != parentPathA) {
- parentA = parentA->parent;
- }
-
- const ItemData* parentB = b;
- while (parentB && parentB->item.url().path() != parentPathB) {
- parentB = parentB->parent;
- }
-
- if (parentA && parentB) {
- return sortRoleCompare(parentA, parentB);
- }
-
- kWarning() << "Child items without parent detected:" << a->item.url() << b->item.url();
- return QString::compare(urlA.url(), urlB.url(), Qt::CaseSensitive);
-}
-
-QString KFileItemModel::subPath(const KFileItem& item,
- const QString& itemPath,
- int start,
- bool* isDir) const
-{
- Q_ASSERT(isDir);
- const int pathIndex = itemPath.indexOf('/', start + 1);
- *isDir = (pathIndex > 0) || item.isDir();
- return itemPath.mid(start, pathIndex - start);
-}
-
bool KFileItemModel::useMaximumUpdateInterval() const
{
return !m_dirLister->url().isLocalFile();
const QDate currentDate = KDateTime::currentLocalDateTime().date();
- int yearForCurrentWeek = 0;
- int currentWeek = currentDate.weekNumber(&yearForCurrentWeek);
- if (yearForCurrentWeek == currentDate.year() + 1) {
- currentWeek = 53;
- }
-
QDate previousModifiedDate;
QString groupValue;
for (int i = 0; i <= maxIndex; ++i) {
const int daysDistance = modifiedDate.daysTo(currentDate);
- int yearForModifiedWeek = 0;
- int modifiedWeek = modifiedDate.weekNumber(&yearForModifiedWeek);
- if (yearForModifiedWeek == modifiedDate.year() + 1) {
- modifiedWeek = 53;
- }
-
QString newGroupValue;
if (currentDate.year() == modifiedDate.year() && currentDate.month() == modifiedDate.month()) {
- if (modifiedWeek > currentWeek) {
- // Usecase: modified date = 2010-01-01, current date = 2010-01-22
- // modified week = 53, current week = 3
- modifiedWeek = 0;
- }
- switch (currentWeek - modifiedWeek) {
+ switch (daysDistance / 7) {
case 0:
switch (daysDistance) {
case 0: newGroupValue = i18nc("@title:group Date", "Today"); break;
}
break;
case 1:
- newGroupValue = i18nc("@title:group Date", "Last Week");
+ newGroupValue = i18nc("@title:group Date", "One Week Ago");
break;
case 2:
newGroupValue = i18nc("@title:group Date", "Two Weeks Ago");
} else if (daysDistance <= 7) {
newGroupValue = modifiedTime.toString(i18nc("@title:group The week day name: %A, %B is full month name in current locale, and %Y is full year number", "%A (%B, %Y)"));
} else if (daysDistance <= 7 * 2) {
- newGroupValue = modifiedTime.toString(i18nc("@title:group Date: %B is full month name in current locale, and %Y is full year number", "Last Week (%B, %Y)"));
+ newGroupValue = modifiedTime.toString(i18nc("@title:group Date: %B is full month name in current locale, and %Y is full year number", "One Week Ago (%B, %Y)"));
} else if (daysDistance <= 7 * 3) {
newGroupValue = modifiedTime.toString(i18nc("@title:group Date: %B is full month name in current locale, and %Y is full year number", "Two Weeks Ago (%B, %Y)"));
} else if (daysDistance <= 7 * 4) {
{
QElapsedTimer timer;
timer.start();
- foreach (KFileItem item, items) { // krazy:exclude=foreach
+ foreach (const KFileItem& item, items) { // krazy:exclude=foreach
item.determineMimeType();
if (timer.elapsed() > timeout) {
// Don't block the user interface, let the remaining items
}
}
+QByteArray KFileItemModel::sharedValue(const QByteArray& value)
+{
+ static QSet<QByteArray> pool;
+ const QSet<QByteArray>::const_iterator it = pool.constFind(value);
+
+ if (it != pool.constEnd()) {
+ return *it;
+ } else {
+ pool.insert(value);
+ return value;
+ }
+}
+
+bool KFileItemModel::isConsistent() const
+{
+ if (m_items.count() != m_itemData.count()) {
+ return false;
+ }
+
+ for (int i = 0; i < count(); ++i) {
+ // Check if m_items and m_itemData are consistent.
+ const KFileItem item = fileItem(i);
+ if (item.isNull()) {
+ qWarning() << "Item" << i << "is null";
+ return false;
+ }
+
+ const int itemIndex = index(item);
+ if (itemIndex != i) {
+ qWarning() << "Item" << i << "has a wrong index:" << itemIndex;
+ return false;
+ }
+
+ // Check if the items are sorted correctly.
+ if (i > 0 && !lessThan(m_itemData.at(i - 1), m_itemData.at(i))) {
+ qWarning() << "The order of items" << i - 1 << "and" << i << "is wrong:"
+ << fileItem(i - 1) << fileItem(i);
+ return false;
+ }
+
+ // Check if all parent-child relationships are consistent.
+ const ItemData* data = m_itemData.at(i);
+ const ItemData* parent = data->parent;
+ if (parent) {
+ if (data->values.value("expandedParentsCount").toInt() != parent->values.value("expandedParentsCount").toInt() + 1) {
+ qWarning() << "expandedParentsCount is inconsistent for parent" << parent->item << "and child" << data->item;
+ return false;
+ }
+
+ const int parentIndex = index(parent->item);
+ if (parentIndex >= i) {
+ qWarning() << "Index" << parentIndex << "of parent" << parent->item << "is not smaller than index" << i << "of child" << data->item;
+ return false;
+ }
+ }
+ }
+
+ return true;
+}
+
#include "kfileitemmodel.moc"
projects / dolphin.git / commitdiff