Load KFileItemAction plugins with json metadata

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

diff --git a/src/kitemviews/kitemlistselectionmanager.cpp b/src/kitemviews/kitemlistselectionmanager.cpp
index ee8ba929eec30e3bd62b76924ece7e0b317f64ef..46ffe7c139f036b840659ca49a3fb4ece3955664 100644 (file)
--- a/src/kitemviews/kitemlistselectionmanager.cpp
+++ b/src/kitemviews/kitemlistselectionmanager.cpp
@@ -1,5 +1,6 @@
 /***************************************************************************
  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
 /***************************************************************************
  *   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                          *
  *                                                                         *
  *   Based on the Itemviews NG project from Trolltech Labs:                *
  *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *


@@ -23,13 +24,13 @@
 #include "kitemlistselectionmanager.h"
 
 #include "kitemmodelbase.h"
 #include "kitemlistselectionmanager.h"
 
 #include "kitemmodelbase.h"

-#include <KDebug>

 
 KItemListSelectionManager::KItemListSelectionManager(QObject* parent) :
     QObject(parent),
     m_currentItem(-1),
     m_anchorItem(-1),
     m_selectedItems(),
 
 KItemListSelectionManager::KItemListSelectionManager(QObject* parent) :
     QObject(parent),
     m_currentItem(-1),
     m_anchorItem(-1),
     m_selectedItems(),

+    m_isAnchoredSelectionActive(false),

     m_model(0)
 {
 }
     m_model(0)
 {
 }


@@ -41,6 +42,8 @@ KItemListSelectionManager::~KItemListSelectionManager()
 void KItemListSelectionManager::setCurrentItem(int current)
 {
     const int previous = m_currentItem;
 void KItemListSelectionManager::setCurrentItem(int current)
 {
     const int previous = m_currentItem;

+    const KItemSet previousSelection = selectedItems();
+

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


@@ -49,6 +52,13 @@ void KItemListSelectionManager::setCurrentItem(int current)
 
     if (m_currentItem != previous) {
         emit currentChanged(m_currentItem, previous);
 
     if (m_currentItem != previous) {
         emit currentChanged(m_currentItem, previous);

+
+        if (m_isAnchoredSelectionActive) {
+            const KItemSet selection = selectedItems();
+            if (selection != previousSelection) {
+                emit selectionChanged(selection, previousSelection);
+            }
+        }

     }
 }
 
     }
 }
 


@@ -57,23 +67,56 @@ 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;
         emit selectionChanged(m_selectedItems, previous);
     }
 }
 
         m_selectedItems = items;
         emit selectionChanged(m_selectedItems, previous);
     }
 }
 

-QSet<int> KItemListSelectionManager::selectedItems() const
+KItemSet KItemListSelectionManager::selectedItems() const
+{
+    KItemSet selectedItems = m_selectedItems;
+
+    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);
+
+        for (int index = from; index <= to; ++index) {
+            selectedItems.insert(index);
+        }
+    }
+
+    return selectedItems;
+}
+
+bool KItemListSelectionManager::isSelected(int index) const

 {
 {

-    return m_selectedItems;
+    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
 {
 }
 
 bool KItemListSelectionManager::hasSelection() const
 {

-    return !m_selectedItems.isEmpty();
+    return !m_selectedItems.isEmpty() || (m_isAnchoredSelectionActive && m_anchorItem != m_currentItem);

 }
 
 void KItemListSelectionManager::setSelected(int index, int count, SelectionMode mode)
 }
 
 void KItemListSelectionManager::setSelected(int index, int count, SelectionMode mode)


@@ -82,7 +125,8 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode
         return;
     }
 
         return;
     }
 

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

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


@@ -115,47 +159,49 @@ void KItemListSelectionManager::setSelected(int index, int count, SelectionMode
         break;
     }
 
         break;
     }
 

-    if (m_selectedItems != previous) {
-        emit selectionChanged(m_selectedItems, previous);
+    const KItemSet selection = selectedItems();
+    if (selection != previous) {
+        emit selectionChanged(selection, previous);

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

-    if (!m_selectedItems.isEmpty()) {
-        const QSet<int> previous = m_selectedItems;
+    const KItemSet previous = selectedItems();
+    if (!previous.isEmpty()) {

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

-        emit selectionChanged(m_selectedItems, previous);
+        m_isAnchoredSelectionActive = false;
+        emit selectionChanged(KItemSet(), previous);

     }
 }
 
     }
 }
 

-void KItemListSelectionManager::beginAnchoredSelection(int anchor, SelectionMode mode)
+void KItemListSelectionManager::beginAnchoredSelection(int anchor)

 {
 {

-    Q_UNUSED(anchor);
-    Q_UNUSED(mode);
+    if (anchor >= 0 && m_model && anchor < m_model->count()) {
+        m_isAnchoredSelectionActive = true;
+        m_anchorItem = anchor;
+    }

 }
 
 void KItemListSelectionManager::endAnchoredSelection()
 {
 }
 
 void KItemListSelectionManager::endAnchoredSelection()
 {

-}
-
-void KItemListSelectionManager::setAnchorItem(int anchor)
-{
-    const int previous = m_anchorItem;
-    if (m_model && anchor < m_model->count()) {
-        m_anchorItem = anchor;
-    } else {
-        m_anchorItem = -1;
+    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);
+
+        for (int index = from; index <= to; ++index) {
+            m_selectedItems.insert(index);
+        }

     }
 
     }
 

-    if (m_anchorItem != previous) {
-        emit anchorChanged(m_anchorItem, previous);
-    }
+    m_isAnchoredSelectionActive = false;

 }
 
 }
 

-int KItemListSelectionManager::anchorItem() const
+bool KItemListSelectionManager::isAnchoredSelectionActive() const

 {
 {

-    return m_anchorItem;
+    return m_isAnchoredSelectionActive;

 }
 
 KItemModelBase* KItemListSelectionManager::model() const
 }
 
 KItemModelBase* KItemListSelectionManager::model() const


@@ -173,10 +219,14 @@ 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)
+    const KItemSet previousSelection = selectedItems();
+

     // Update the current item
     if (m_currentItem < 0) {
         setCurrentItem(0);
     } else {
     // Update the current item
     if (m_currentItem < 0) {
         setCurrentItem(0);
     } else {

+        const int previousCurrent = m_currentItem;

         int inc = 0;
         foreach (const KItemRange& itemRange, itemRanges) {
             if (m_currentItem < itemRange.index) {
         int inc = 0;
         foreach (const KItemRange& itemRange, itemRanges) {
             if (m_currentItem < itemRange.index) {


@@ -184,18 +234,32 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges)
             }
             inc += itemRange.count;
         }
             }
             inc += itemRange.count;
         }

-        setCurrentItem(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);
+    }
+
+    // Update the anchor item
+    if (m_anchorItem < 0) {
+        m_anchorItem = 0;
+    } else {
+        int inc = 0;
+        foreach (const KItemRange& itemRange, itemRanges) {
+            if (m_anchorItem < itemRange.index) {
+                break;
+            }
+            inc += itemRange.count;
+        }
+        m_anchorItem += inc;

     }
 
     // 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();

 
 

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

             int inc = 0;
             foreach (const KItemRange& itemRange, itemRanges) {
                 if (index < itemRange.index) {
             int inc = 0;
             foreach (const KItemRange& itemRange, itemRanges) {
                 if (index < itemRange.index) {


@@ -203,69 +267,132 @@ void KItemListSelectionManager::itemsInserted(const KItemRangeList& itemRanges)
                 }
                 inc += itemRange.count;
             }
                 }
                 inc += itemRange.count;
             }

-            current.insert(index + inc);
+            m_selectedItems.insert(index + inc);

         }
         }

+    }

 
 

-        if (current != previous) {
-            m_selectedItems = current;
-            emit selectionChanged(current, previous);
-        }
+    const KItemSet selection = selectedItems();
+    if (selection != previousSelection) {
+        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)
+    const KItemSet previousSelection = selectedItems();
+    const int previousCurrent = m_currentItem;
+

     // Update the current item
     // Update the current item

-    if (m_currentItem >= 0) {
-        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) {
+        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) {
+        m_anchorItem = indexAfterRangesRemoving(m_anchorItem, itemRanges, DiscardRemovedIndex);
+        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);

             }
         }
             }
         }

-        setCurrentItem(currentItem);

     }
 
     }
 

+    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<int>& 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);
+
+        // 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()) {
     // Update the selections
     if (!m_selectedItems.isEmpty()) {

-        const QSet<int> previous = m_selectedItems;
-
-        QSet<int> current;
-        current.reserve(m_selectedItems.count());
-        QSetIterator<int> it(m_selectedItems);
-        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;
-                }
+        const KItemSet previous = m_selectedItems;
+        m_selectedItems.clear();

 
 

-                dec += itemRange.count;
+        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)  {
-                current.insert(index);
+            else {
+                m_selectedItems.insert(index);

             }
         }
             }
         }

+    }
+
+    const KItemSet selection = selectedItems();
+    if (selection != previousSelection) {
+        emit selectionChanged(selection, previousSelection);
+    }
+}

 
 

-        if (current != previous) {
-            m_selectedItems = current;
-            emit selectionChanged(current, previous);
+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);

 }
 
 }
 

-#include "kitemlistselectionmanager.moc"