GIT_SILENT Sync po/docbooks with svn

[dolphin.git] / src / kitemviews / kitemlistselectionmanager.cpp

diff --git a/src/kitemviews/kitemlistselectionmanager.cpp b/src/kitemviews/kitemlistselectionmanager.cpp
index 764227004528bd5dbf15941db43e92b83273e941..6f7f0e0776121850799674817736f7522277f51a 100644 (file)
--- a/src/kitemviews/kitemlistselectionmanager.cpp
+++ b/src/kitemviews/kitemlistselectionmanager.cpp
@@ -1,38 +1,21 @@
-/***************************************************************************
- *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
- *   Copyright (C) 2011 by Frank Reininghaus <frank78ac@googlemail.com>    *
- *                                                                         *
- *   Based on the Itemviews NG project from Trolltech Labs:                *
- *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
- *                                                                         *
- *   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            *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
+ * SPDX-FileCopyrightText: 2011 Frank Reininghaus <frank78ac@googlemail.com>
+ *
+ * Based on the Itemviews NG project from Trolltech Labs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */

 
 #include "kitemlistselectionmanager.h"
 
 
 #include "kitemlistselectionmanager.h"
 

-#include "kitemmodelbase.h"
-#include <KDebug>
-
-KItemListSelectionManager::KItemListSelectionManager(QObject* parent) :
-    QObject(parent),
-    m_currentItem(-1),
-    m_anchorItem(-1),
-    m_selectedItems(),
-    m_isAnchoredSelectionActive(false),
-    m_model(0)
+KItemListSelectionManager::KItemListSelectionManager(QObject *parent)
+    : QObject(parent)
+    , m_currentItem(-1)
+    , m_anchorItem(-1)
+    , m_selectedItems()
+    , m_isAnchoredSelectionActive(false)
+    , m_model(nullptr)

 {
 }
 
 {
 }
 


@@ -43,7 +26,7 @@ KItemListSelectionManager::~KItemListSelectionManager()
 void KItemListSelectionManager::setCurrentItem(int current)
 {
     const int previous = m_currentItem;
 void KItemListSelectionManager::setCurrentItem(int current)
 {
     const int previous = m_currentItem;

-    const QSet<int> previousSelection = selectedItems();
+    const KItemSet previousSelection = selectedItems();

 
     if (m_model && current >= 0 && current < m_model->count()) {
         m_currentItem = current;
 
     if (m_model && current >= 0 && current < m_model->count()) {
         m_currentItem = current;


@@ -52,12 +35,12 @@ void KItemListSelectionManager::setCurrentItem(int current)
     }
 
     if (m_currentItem != previous) {
     }
 
     if (m_currentItem != previous) {

-        emit currentChanged(m_currentItem, previous);
+        Q_EMIT currentChanged(m_currentItem, previous);

 
         if (m_isAnchoredSelectionActive) {
 
         if (m_isAnchoredSelectionActive) {

-            const QSet<int> selection = selectedItems();
+            const KItemSet selection = selectedItems();

             if (selection != previousSelection) {
             if (selection != previousSelection) {

-                emit selectionChanged(selection, previousSelection);
+                Q_EMIT selectionChanged(selection, previousSelection);

             }
         }
     }
             }
         }
     }


@@ -68,18 +51,18 @@ int KItemListSelectionManager::currentItem() const
     return m_currentItem;
 }
 
     return m_currentItem;
 }
 

-void KItemListSelectionManager::setSelectedItems(const QSet<int>& items)
+void KItemListSelectionManager::setSelectedItems(const KItemSet &items)

 {
     if (m_selectedItems != items) {
 {
     if (m_selectedItems != items) {

-        const QSet<int> previous = m_selectedItems;
+        const KItemSet previous = m_selectedItems;

         m_selectedItems = items;
         m_selectedItems = items;

-        emit selectionChanged(m_selectedItems, previous);
+        Q_EMIT selectionChanged(m_selectedItems, previous);

     }
 }
 
     }
 }
 

-QSet<int> KItemListSelectionManager::selectedItems() const
+KItemSet KItemListSelectionManager::selectedItems() const

 {
 {

-    QSet<int> selectedItems = m_selectedItems;
+    KItemSet selectedItems = m_selectedItems;

 
     if (m_isAnchoredSelectionActive && m_anchorItem != m_currentItem) {
         Q_ASSERT(m_anchorItem >= 0);
 
     if (m_isAnchoredSelectionActive && m_anchorItem != m_currentItem) {
         Q_ASSERT(m_anchorItem >= 0);


@@ -95,6 +78,26 @@ QSet<int> KItemListSelectionManager::selectedItems() const
     return selectedItems;
 }
 
     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);
 bool KItemListSelectionManager::hasSelection() const
 {
     return !m_selectedItems.isEmpty() || (m_isAnchoredSelectionActive && m_anchorItem != m_currentItem);


@@ -107,11 +110,11 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode
     }
 
     endAnchoredSelection();
     }
 
     endAnchoredSelection();

-    const QSet<int> previous = selectedItems();
+    const KItemSet previous = selectedItems();

 
     count = qMin(count, m_model->count() - index);
 
 
     count = qMin(count, m_model->count() - index);
 

-    const int endIndex = index + count -1;
+    const int endIndex = index + count - 1;

     switch (mode) {
     case Select:
         for (int i = index; i <= endIndex; ++i) {
     switch (mode) {
     case Select:
         for (int i = index; i <= endIndex; ++i) {


@@ -140,28 +143,37 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode
         break;
     }
 
         break;
     }
 

-    const QSet<int> selection = selectedItems();
+    const KItemSet selection = selectedItems();

     if (selection != previous) {
     if (selection != previous) {

-        emit selectionChanged(selection, previous);
+        Q_EMIT selectionChanged(selection, previous);

     }
 }
 
 void KItemListSelectionManager::clearSelection()
 {
     }
 }
 
 void KItemListSelectionManager::clearSelection()
 {

-    const QSet<int> previous = selectedItems();
+    const KItemSet previous = selectedItems();
+    if (!previous.isEmpty()) {
+        m_selectedItems.clear();
+        m_isAnchoredSelectionActive = false;
+        Q_EMIT selectionChanged(KItemSet(), previous);
+    }
+}
+
+void KItemListSelectionManager::replaceSelection(int index, int count)
+{
+    const KItemSet previous = selectedItems();

     if (!previous.isEmpty()) {
         m_selectedItems.clear();
         m_isAnchoredSelectionActive = false;
     if (!previous.isEmpty()) {
         m_selectedItems.clear();
         m_isAnchoredSelectionActive = false;

-        emit selectionChanged(QSet<int>(), previous);

     }
     }

+    setSelected(index, count);

 }
 
 void KItemListSelectionManager::beginAnchoredSelection(int anchor)
 {
     if (anchor >= 0 && m_model && anchor < m_model->count()) {
         m_isAnchoredSelectionActive = true;
 }
 
 void KItemListSelectionManager::beginAnchoredSelection(int anchor)
 {
     if (anchor >= 0 && m_model && anchor < m_model->count()) {
         m_isAnchoredSelectionActive = true;

-        setAnchorItem(anchor);
-        Q_ASSERT(m_anchorItem >= 0);
+        m_anchorItem = anchor;

     }
 }
 
     }
 }
 


@@ -181,40 +193,17 @@ void KItemListSelectionManager::endAnchoredSelection()
     m_isAnchoredSelectionActive = false;
 }
 
     m_isAnchoredSelectionActive = false;
 }
 

-void KItemListSelectionManager::setAnchorItem(int anchor)
-{
-    if (!m_isAnchoredSelectionActive) {
-        return;
-    }
-
-    if (anchor < 0 || (m_model && anchor >= m_model->count())) {
-        // Index is out of range
-        return;
-    }
-
-    if (m_anchorItem != anchor) {
-        const int previous = m_anchorItem;
-        m_anchorItem = anchor;
-        emit anchorChanged(m_anchorItem, previous);
-    }
-}
-
-int KItemListSelectionManager::anchorItem() const
-{
-    return m_anchorItem;
-}
-

 bool KItemListSelectionManager::isAnchoredSelectionActive() const
 {
     return m_isAnchoredSelectionActive;
 }
 
 bool KItemListSelectionManager::isAnchoredSelectionActive() const
 {
     return m_isAnchoredSelectionActive;
 }
 

-KItemModelBase* KItemListSelectionManager::model() const
+KItemModelBase *KItemListSelectionManager::model() const

 {
     return m_model;
 }
 
 {
     return m_model;
 }
 

-void KItemListSelectionManager::setModel(KItemModelBase* model)
+void KItemListSelectionManager::setModel(KItemModelBase *model)

 {
     m_model = model;
     if (model && model->count() > 0) {
 {
     m_model = model;
     if (model && model->count() > 0) {


@@ -222,10 +211,10 @@ void KItemListSelectionManager::setModel(KItemModelBase* model)
     }
 }
 
     }
 }
 

-void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges)
+void KItemListSelectionManager::itemsInserted(const KItemRangeList &itemRanges)

 {
     // Store the current selection (needed in the selectionChanged() signal)
 {
     // Store the current selection (needed in the selectionChanged() signal)

-    const QSet<int> previousSelection = selectedItems();
+    const KItemSet previousSelection = selectedItems();

 
     // Update the current item
     if (m_currentItem < 0) {
 
     // Update the current item
     if (m_currentItem < 0) {


@@ -233,7 +222,7 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges)
     } else {
         const int previousCurrent = m_currentItem;
         int inc = 0;
     } else {
         const int previousCurrent = m_currentItem;
         int inc = 0;

-        foreach (const KItemRange& itemRange, itemRanges) {
+        for (const KItemRange &itemRange : itemRanges) {

             if (m_currentItem < itemRange.index) {
                 break;
             }
             if (m_currentItem < itemRange.index) {
                 break;
             }


@@ -242,34 +231,34 @@ 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;
         // 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;

-        emit currentChanged(m_currentItem, previousCurrent);
+        if (m_currentItem >= m_model->count()) {
+            m_currentItem = -1;
+        }
+        Q_EMIT currentChanged(m_currentItem, previousCurrent);

     }
 
     // Update the anchor item
     if (m_anchorItem < 0) {
     }
 
     // Update the anchor item
     if (m_anchorItem < 0) {

-        setAnchorItem(0);
+        m_anchorItem = 0;

     } else {
     } else {

-        const int previousAnchor = m_anchorItem;

         int inc = 0;
         int inc = 0;

-        foreach (const KItemRange& itemRange, itemRanges) {
+        for (const KItemRange &itemRange : itemRanges) {

             if (m_anchorItem < itemRange.index) {
                 break;
             }
             inc += itemRange.count;
         }
         m_anchorItem += inc;
             if (m_anchorItem < itemRange.index) {
                 break;
             }
             inc += itemRange.count;
         }
         m_anchorItem += inc;

-        emit anchorChanged(m_anchorItem, previousAnchor);

     }
 
     // Update the selections
     if (!m_selectedItems.isEmpty()) {
     }
 
     // Update the selections
     if (!m_selectedItems.isEmpty()) {

-        const QSet<int> previous = m_selectedItems;
+        const KItemSet previous = m_selectedItems;

         m_selectedItems.clear();
         m_selectedItems.clear();

-        QSetIterator<int> it(previous);
-        while (it.hasNext()) {
-            const int index = it.next();
+
+        for (int index : previous) {

             int inc = 0;
             int inc = 0;

-            foreach (const KItemRange& itemRange, itemRanges) {
+            for (const KItemRange &itemRange : itemRanges) {

                 if (index < itemRange.index) {
                     break;
                 }
                 if (index < itemRange.index) {
                     break;
                 }


@@ -279,92 +268,132 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges)
         }
     }
 
         }
     }
 

-    const QSet<int> selection = selectedItems();
+    const KItemSet selection = selectedItems();

     if (selection != previousSelection) {
     if (selection != previousSelection) {

-        emit selectionChanged(selection, previousSelection);
+        Q_EMIT selectionChanged(selection, previousSelection);

     }
 }
 
     }
 }
 

-void KItemListSelectionManager::itemsRemoved(const KItemRangeList& itemRanges)
+void KItemListSelectionManager::itemsRemoved(const KItemRangeList &itemRanges)

 {
     // Store the current selection (needed in the selectionChanged() signal)
 {
     // Store the current selection (needed in the selectionChanged() signal)

-    const QSet<int> previousSelection = selectedItems();
+    const KItemSet previousSelection = selectedItems();
+    const int previousCurrent = m_currentItem;

 
     // Update the current item
 
     // 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;
-            }
+    m_currentItem = indexAfterRangesRemoving(m_currentItem, itemRanges, DiscardRemovedIndex);
+    if (m_currentItem != previousCurrent) {
+        Q_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);
+            Q_EMIT currentChanged(m_currentItem, -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;
-        emit currentChanged(m_currentItem, previousCurrent);

     }
 
     // Update the anchor item
     if (m_anchorItem >= 0) {
     }
 
     // Update the anchor item
     if (m_anchorItem >= 0) {

-        const int previousAnchor = m_anchorItem;
-        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;
         }
         if (m_anchorItem < 0) {
             m_isAnchoredSelectionActive = false;
         }

+    }
+
+    // Update the selections and the anchor item
+    if (!m_selectedItems.isEmpty()) {
+        const KItemSet previous = m_selectedItems;
+        m_selectedItems.clear();
+
+        for (int oldIndex : previous) {
+            const int index = indexAfterRangesRemoving(oldIndex, itemRanges, DiscardRemovedIndex);
+            if (index >= 0) {
+                m_selectedItems.insert(index);
+            }
+        }
+    }

 
 

-        emit anchorChanged(m_anchorItem, previousAnchor);
+    const KItemSet selection = selectedItems();
+    if (selection != previousSelection) {
+        Q_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<int> &movedToIndexes)
+{
+    // Store the current selection (needed in the selectionChanged() signal)
+    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) {
+        const int previousCurrentItem = m_currentItem;
+        const int newCurrentItem = movedToIndexes.at(previousCurrentItem - itemRange.index);
+
+        // 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;
+        Q_EMIT currentChanged(newCurrentItem, previousCurrentItem);
+    }
+
+    // Start a new anchored selection.
+    if (wasInAnchoredSelection) {
+        beginAnchoredSelection(m_currentItem);

     }
 
     // Update the selections
     if (!m_selectedItems.isEmpty()) {
     }
 
     // Update the selections
     if (!m_selectedItems.isEmpty()) {

-        const QSet<int> previous = m_selectedItems;
+        const KItemSet previous = m_selectedItems;

         m_selectedItems.clear();
         m_selectedItems.clear();

-        QSetIterator<int> 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;
-            if (index >= 0)  {
+        for (int index : previous) {
+            if (index >= itemRange.index && index < itemRange.index + itemRange.count) {
+                m_selectedItems.insert(movedToIndexes.at(index - itemRange.index));
+            } else {

                 m_selectedItems.insert(index);
             }
         }
     }
 
                 m_selectedItems.insert(index);
             }
         }
     }
 

-    const QSet<int> selection = selectedItems();
+    const KItemSet selection = selectedItems();

     if (selection != previousSelection) {
     if (selection != previousSelection) {

-        emit selectionChanged(selection, previousSelection);
+        Q_EMIT selectionChanged(selection, previousSelection);
+    }
+}
+
+int KItemListSelectionManager::indexAfterRangesRemoving(int index, const KItemRangeList &itemRanges, const RangesRemovingBehaviour behaviour) const
+{
+    int dec = 0;
+    for (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);

 }
 
 }
 

-#include "kitemlistselectionmanager.moc"
+#include "moc_kitemlistselectionmanager.cpp"