Implement grouping for names

- Use a custom header for KFileItems
- Cache the groups
- Allow enabling/disabling grouping dynamically

Currently there is a random crash in combination with the
groupheader-recycler, this will be fixed during the next
days.

1 files changed, 45 insertions, 1 deletions

diff --git a/src/kitemviews/kitemlistgroupheader.cpp b/src/kitemviews/kitemlistgroupheader.cpp
index 4db253293..5aac02c82 100644
--- a/src/kitemviews/kitemlistgroupheader.cpp
+++ b/src/kitemviews/kitemlistgroupheader.cpp
@@ -29,7 +29,9 @@
 #include <KDebug>
 
 KItemListGroupHeader::KItemListGroupHeader(QGraphicsWidget* parent) :
-    QGraphicsWidget(parent, 0)
+    QGraphicsWidget(parent, 0),
+    m_role(),
+    m_data()
 {
 }
 
@@ -37,6 +39,36 @@ KItemListGroupHeader::~KItemListGroupHeader()
 {
 }
 
+void KItemListGroupHeader::setRole(const QByteArray& role)
+{
+    if (m_role != role) {
+        const QByteArray previous = m_role;
+        m_role = role;
+        update();
+        roleChanged(role, previous);
+    }
+}
+
+QByteArray KItemListGroupHeader::role() const
+{
+    return m_role;
+}
+
+void KItemListGroupHeader::setData(const QVariant& data)
+{
+    if (m_data != data) {
+        const QVariant previous = m_data;
+        m_data = data;
+        update();
+        dataChanged(data, previous);
+    }
+}
+
+QVariant KItemListGroupHeader::data() const
+{
+    return m_data;
+}
+
 QSizeF KItemListGroupHeader::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const
 {
     Q_UNUSED(which);
@@ -55,4 +87,16 @@ void KItemListGroupHeader::paint(QPainter* painter, const QStyleOptionGraphicsIt
     //painter->drawText(rect(), QString::number(m_index));
 }
 
+void KItemListGroupHeader::roleChanged(const QByteArray& current, const QByteArray& previous)
+{
+    Q_UNUSED(current);
+    Q_UNUSED(previous);
+}
+
+void KItemListGroupHeader::dataChanged(const QVariant& current, const QVariant& previous)
+{
+    Q_UNUSED(current);
+    Q_UNUSED(previous);
+}
+
 #include "kitemlistgroupheader.moc"