X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/ea765ba5737074dcffc67be20d33a7f01890dd7f..16e3d669de256aab86f957cd5b3bee91bd2fbbff:/src/kitemviews/kitemlistselectionmanager.cpp diff --git a/src/kitemviews/kitemlistselectionmanager.cpp b/src/kitemviews/kitemlistselectionmanager.cpp index 3c7b94965..46ffe7c13 100644 --- a/src/kitemviews/kitemlistselectionmanager.cpp +++ b/src/kitemviews/kitemlistselectionmanager.cpp @@ -24,7 +24,6 @@ #include "kitemlistselectionmanager.h" #include "kitemmodelbase.h" -#include KItemListSelectionManager::KItemListSelectionManager(QObject* parent) : QObject(parent), @@ -43,7 +42,7 @@ KItemListSelectionManager::~KItemListSelectionManager() void KItemListSelectionManager::setCurrentItem(int current) { const int previous = m_currentItem; - const QSet previousSelection = selectedItems(); + const KItemSet previousSelection = selectedItems(); if (m_model && current >= 0 && current < m_model->count()) { m_currentItem = current; @@ -55,7 +54,7 @@ void KItemListSelectionManager::setCurrentItem(int current) emit currentChanged(m_currentItem, previous); if (m_isAnchoredSelectionActive) { - const QSet selection = selectedItems(); + const KItemSet selection = selectedItems(); if (selection != previousSelection) { emit selectionChanged(selection, previousSelection); } @@ -68,18 +67,18 @@ int KItemListSelectionManager::currentItem() const return m_currentItem; } -void KItemListSelectionManager::setSelectedItems(const QSet& items) +void KItemListSelectionManager::setSelectedItems(const KItemSet& items) { if (m_selectedItems != items) { - const QSet previous = m_selectedItems; + const KItemSet previous = m_selectedItems; m_selectedItems = items; emit selectionChanged(m_selectedItems, previous); } } -QSet KItemListSelectionManager::selectedItems() const +KItemSet KItemListSelectionManager::selectedItems() const { - QSet selectedItems = m_selectedItems; + KItemSet selectedItems = m_selectedItems; if (m_isAnchoredSelectionActive && m_anchorItem != m_currentItem) { Q_ASSERT(m_anchorItem >= 0); @@ -95,6 +94,26 @@ QSet KItemListSelectionManager::selectedItems() const return selectedItems; } +bool KItemListSelectionManager::isSelected(int index) const +{ + if (m_selectedItems.contains(index)) { + return true; + } + + if (m_isAnchoredSelectionActive && m_anchorItem != m_currentItem) { + Q_ASSERT(m_anchorItem >= 0); + Q_ASSERT(m_currentItem >= 0); + const int from = qMin(m_anchorItem, m_currentItem); + const int to = qMax(m_anchorItem, m_currentItem); + + if (from <= index && index <= to) { + return true; + } + } + + return false; +} + bool KItemListSelectionManager::hasSelection() const { return !m_selectedItems.isEmpty() || (m_isAnchoredSelectionActive && m_anchorItem != m_currentItem); @@ -107,7 +126,7 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode } endAnchoredSelection(); - const QSet previous = selectedItems(); + const KItemSet previous = selectedItems(); count = qMin(count, m_model->count() - index); @@ -140,7 +159,7 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode break; } - const QSet selection = selectedItems(); + const KItemSet selection = selectedItems(); if (selection != previous) { emit selectionChanged(selection, previous); } @@ -148,11 +167,11 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode void KItemListSelectionManager::clearSelection() { - const QSet previous = selectedItems(); + const KItemSet previous = selectedItems(); if (!previous.isEmpty()) { m_selectedItems.clear(); m_isAnchoredSelectionActive = false; - emit selectionChanged(QSet(), previous); + emit selectionChanged(KItemSet(), previous); } } @@ -180,11 +199,6 @@ void KItemListSelectionManager::endAnchoredSelection() m_isAnchoredSelectionActive = false; } -int KItemListSelectionManager::anchorItem() const -{ - return m_anchorItem; -} - bool KItemListSelectionManager::isAnchoredSelectionActive() const { return m_isAnchoredSelectionActive; @@ -206,7 +220,7 @@ void KItemListSelectionManager::setModel(KItemModelBase* model) void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges) { // Store the current selection (needed in the selectionChanged() signal) - const QSet previousSelection = selectedItems(); + const KItemSet previousSelection = selectedItems(); // Update the current item if (m_currentItem < 0) { @@ -242,11 +256,10 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges) // Update the selections if (!m_selectedItems.isEmpty()) { - const QSet previous = m_selectedItems; + const KItemSet previous = m_selectedItems; m_selectedItems.clear(); - QSetIterator it(previous); - while (it.hasNext()) { - const int index = it.next(); + + for (int index: previous) { int inc = 0; foreach (const KItemRange& itemRange, itemRanges) { if (index < itemRange.index) { @@ -258,7 +271,7 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges) } } - const QSet selection = selectedItems(); + const KItemSet selection = selectedItems(); if (selection != previousSelection) { emit selectionChanged(selection, previousSelection); } @@ -267,80 +280,119 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges) void KItemListSelectionManager::itemsRemoved(const KItemRangeList& itemRanges) { // Store the current selection (needed in the selectionChanged() signal) - const QSet previousSelection = selectedItems(); + const KItemSet previousSelection = selectedItems(); + const int previousCurrent = m_currentItem; // Update the current item - if (m_currentItem >= 0) { - const int previousCurrent = m_currentItem; - int currentItem = m_currentItem; - foreach (const KItemRange& itemRange, itemRanges) { - if (currentItem < itemRange.index) { - break; - } - if (currentItem >= itemRange.index + itemRange.count) { - currentItem -= itemRange.count; - } else if (currentItem >= m_model->count()) { - currentItem = m_model->count() - 1; - } - } - // Calling setCurrentItem would trigger the selectionChanged signal, but we want to - // emit it only once in this function -> change the current item manually and emit currentChanged - m_currentItem = currentItem; + m_currentItem = indexAfterRangesRemoving(m_currentItem, itemRanges, DiscardRemovedIndex); + if (m_currentItem != previousCurrent) { emit currentChanged(m_currentItem, previousCurrent); + if (m_currentItem < 0) { + // Calling setCurrentItem() would trigger the selectionChanged signal, but we want to + // emit it only once in this function -> change the current item manually and emit currentChanged + m_currentItem = indexAfterRangesRemoving(previousCurrent, itemRanges, AdjustRemovedIndex); + emit currentChanged(m_currentItem, -1); + } } // Update the anchor item if (m_anchorItem >= 0) { - int anchorItem = m_anchorItem; - foreach (const KItemRange& itemRange, itemRanges) { - if (anchorItem < itemRange.index) { - break; - } - if (anchorItem >= itemRange.index + itemRange.count) { - anchorItem -= itemRange.count; - } else if (anchorItem >= m_model->count()) { - anchorItem = m_model->count() - 1; - } - } - m_anchorItem = anchorItem; + m_anchorItem = indexAfterRangesRemoving(m_anchorItem, itemRanges, DiscardRemovedIndex); if (m_anchorItem < 0) { m_isAnchoredSelectionActive = false; } } - // Update the selections + // Update the selections and the anchor item if (!m_selectedItems.isEmpty()) { - const QSet previous = m_selectedItems; + const KItemSet previous = m_selectedItems; m_selectedItems.clear(); - QSetIterator it(previous); - while (it.hasNext()) { - int index = it.next(); - int dec = 0; - foreach (const KItemRange& itemRange, itemRanges) { - if (index < itemRange.index) { - break; - } - if (index < itemRange.index + itemRange.count) { - // The selection is part of the removed range - // and will get deleted - index = -1; - break; - } + for (int oldIndex : previous) { + const int index = indexAfterRangesRemoving(oldIndex, itemRanges, DiscardRemovedIndex); + if (index >= 0) { + m_selectedItems.insert(index); + } + } + } + + const KItemSet selection = selectedItems(); + if (selection != previousSelection) { + emit selectionChanged(selection, previousSelection); + } + + Q_ASSERT(m_currentItem < m_model->count()); + Q_ASSERT(m_anchorItem < m_model->count()); +} + +void KItemListSelectionManager::itemsMoved(const KItemRange& itemRange, const QList& movedToIndexes) +{ + // Store the current selection (needed in the selectionChanged() signal) + const KItemSet previousSelection = selectedItems(); + + // endAnchoredSelection() adds all items between m_currentItem and + // m_anchorItem to m_selectedItems. They can then be moved + // individually later in this function. + endAnchoredSelection(); + + // Update the current item + if (m_currentItem >= itemRange.index && m_currentItem < itemRange.index + itemRange.count) { + const int previousCurrentItem = m_currentItem; + const int newCurrentItem = movedToIndexes.at(previousCurrentItem - itemRange.index); - dec += itemRange.count; + // Calling setCurrentItem would trigger the selectionChanged signal, but we want to + // emit it only once in this function -> change the current item manually and emit currentChanged + m_currentItem = newCurrentItem; + emit currentChanged(newCurrentItem, previousCurrentItem); + } + + // Start a new anchored selection. + beginAnchoredSelection(m_currentItem); + + // Update the selections + if (!m_selectedItems.isEmpty()) { + const KItemSet previous = m_selectedItems; + m_selectedItems.clear(); + + for (int index : previous) { + if (index >= itemRange.index && index < itemRange.index + itemRange.count) { + m_selectedItems.insert(movedToIndexes.at(index - itemRange.index)); } - index -= dec; - if (index >= 0) { + else { m_selectedItems.insert(index); } } } - const QSet selection = selectedItems(); + const KItemSet selection = selectedItems(); if (selection != previousSelection) { emit selectionChanged(selection, previousSelection); } } -#include "kitemlistselectionmanager.moc" +int KItemListSelectionManager::indexAfterRangesRemoving(int index, const KItemRangeList& itemRanges, + const RangesRemovingBehaviour behaviour) const +{ + int dec = 0; + foreach (const KItemRange& itemRange, itemRanges) { + if (index < itemRange.index) { + break; + } + + dec += itemRange.count; + + const int firstIndexAfterRange = itemRange.index + itemRange.count; + if (index < firstIndexAfterRange) { + // The index is part of the removed range + if (behaviour == DiscardRemovedIndex) { + return -1; + } else { + // Use the first item after the range as new index + index = firstIndexAfterRange; + break; + } + } + } + return qBound(-1, index - dec, m_model->count() - 1); +} +