X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/aeb16937ced1bf426c2ca21dcc270f9e4a96645c..b65576a131eb59eaab4d33af830bdb2d2f9fde9f:/src/kitemviews/kitemlistselectionmanager.cpp diff --git a/src/kitemviews/kitemlistselectionmanager.cpp b/src/kitemviews/kitemlistselectionmanager.cpp index fb279796f..6bee19414 100644 --- a/src/kitemviews/kitemlistselectionmanager.cpp +++ b/src/kitemviews/kitemlistselectionmanager.cpp @@ -2,8 +2,7 @@ * Copyright (C) 2011 by Peter Penz * * Copyright (C) 2011 by Frank Reininghaus * * * - * Based on the Itemviews NG project from Trolltech Labs: * - * http://qt.gitorious.org/qt-labs/itemviews-ng * + * Based on the Itemviews NG project from Trolltech Labs * * * * 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 * @@ -23,16 +22,13 @@ #include "kitemlistselectionmanager.h" -#include "kitemmodelbase.h" -#include - KItemListSelectionManager::KItemListSelectionManager(QObject* parent) : QObject(parent), m_currentItem(-1), m_anchorItem(-1), m_selectedItems(), m_isAnchoredSelectionActive(false), - m_model(0) + m_model(nullptr) { } @@ -43,7 +39,7 @@ 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 +51,7 @@ 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 +64,18 @@ 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); @@ -127,7 +123,7 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode } endAnchoredSelection(); - const QSet previous = selectedItems(); + const KItemSet previous = selectedItems(); count = qMin(count, m_model->count() - index); @@ -160,7 +156,7 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode break; } - const QSet selection = selectedItems(); + const KItemSet selection = selectedItems(); if (selection != previous) { emit selectionChanged(selection, previous); } @@ -168,14 +164,24 @@ 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); } } +void KItemListSelectionManager::replaceSelection(int index, int count) +{ + const KItemSet previous = selectedItems(); + if (!previous.isEmpty()) { + m_selectedItems.clear(); + m_isAnchoredSelectionActive = false; + } + setSelected(index, count); +} + void KItemListSelectionManager::beginAnchoredSelection(int anchor) { if (anchor >= 0 && m_model && anchor < m_model->count()) { @@ -221,7 +227,7 @@ 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) { @@ -238,6 +244,9 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges) // 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 += inc; + if (m_currentItem >= m_model->count()) { + m_currentItem = -1; + } emit currentChanged(m_currentItem, previousCurrent); } @@ -257,12 +266,10 @@ 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(); - m_selectedItems.reserve(previous.count()); - 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) { @@ -274,7 +281,7 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges) } } - const QSet selection = selectedItems(); + const KItemSet selection = selectedItems(); if (selection != previousSelection) { emit selectionChanged(selection, previousSelection); } @@ -283,87 +290,63 @@ 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(); - m_selectedItems.reserve(previous.count()); - 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; - } - dec += itemRange.count; - } - index -= dec; + for (int oldIndex : previous) { + const int index = indexAfterRangesRemoving(oldIndex, itemRanges, DiscardRemovedIndex); if (index >= 0) { m_selectedItems.insert(index); } } } - const QSet selection = selectedItems(); + 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 QSet previousSelection = selectedItems(); + const KItemSet previousSelection = selectedItems(); + + // Store whether we were doing an anchored selection + const bool wasInAnchoredSelection = isAnchoredSelectionActive(); + + // 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) { @@ -376,19 +359,17 @@ void KItemListSelectionManager::itemsMoved(const KItemRange& itemRange, const QL emit currentChanged(newCurrentItem, previousCurrentItem); } - // Update the anchor item - if (m_anchorItem >= itemRange.index && m_anchorItem < itemRange.index + itemRange.count) { - m_anchorItem = movedToIndexes.at(m_anchorItem - itemRange.index); + // Start a new anchored selection. + if (wasInAnchoredSelection) { + beginAnchoredSelection(m_currentItem); } // Update the selections if (!m_selectedItems.isEmpty()) { - const QSet previous = m_selectedItems; + const KItemSet previous = m_selectedItems; m_selectedItems.clear(); - m_selectedItems.reserve(previous.count()); - QSetIterator it(previous); - while (it.hasNext()) { - const int index = it.next(); + + for (int index : previous) { if (index >= itemRange.index && index < itemRange.index + itemRange.count) { m_selectedItems.insert(movedToIndexes.at(index - itemRange.index)); } @@ -398,10 +379,35 @@ void KItemListSelectionManager::itemsMoved(const KItemRange& itemRange, const QL } } - 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); +} +