Places Panel: Allow hiding of items

Related changes:
- Animate changed items for the details-view in case it is not expandable
- Remove the hardcoded "isHidden"-code in KStandardItemListWidget and
  allow derived widgets to define themselves what means "hidden" within
  their context.

The current code needs a lot of bugfixing, but lets make this in smaller
steps during the next days...

1 files changed, 29 insertions, 8 deletions

diff --git a/src/kitemviews/kstandarditemmodel.cpp b/src/kitemviews/kstandarditemmodel.cpp
index 04749b9b5..d0be1325f 100644
--- a/src/kitemviews/kstandarditemmodel.cpp
+++ b/src/kitemviews/kstandarditemmodel.cpp
@@ -38,19 +38,22 @@ KStandardItemModel::~KStandardItemModel()
 
 void KStandardItemModel::insertItem(int index, KStandardItem* item)
 {
-    if (!m_indexesForItems.contains(item) && !item->m_model) {
+    if (item && !m_indexesForItems.contains(item) && !item->m_model) {
+        item->m_model = this;
         m_items.insert(index, item);
         m_indexesForItems.insert(item, index);
-        item->m_model = this;
         // TODO: no hierarchical items are handled yet
 
+        onItemInserted(index);
         emit itemsInserted(KItemRangeList() << KItemRange(index, 1));
     }
 }
 
 void KStandardItemModel::replaceItem(int index, KStandardItem* item)
 {
-    if (index >= 0 && index < count()) {
+    if (item && index >= 0 && index < count() && !item->m_model) {
+        item->m_model = this;
+
         QSet<QByteArray> changedRoles;
 
         KStandardItem* oldItem= m_items[index];
@@ -75,6 +78,7 @@ void KStandardItemModel::replaceItem(int index, KStandardItem* item)
         m_items[index] = item;
         m_indexesForItems.insert(item, index);
 
+        onItemReplaced(index);
         emit itemsChanged(KItemRangeList() << KItemRange(index, 1), changedRoles);
     } else {
         kWarning() << "No item available to replace on the given index" << index;
@@ -83,11 +87,6 @@ void KStandardItemModel::replaceItem(int index, KStandardItem* item)
     }
 }
 
-void KStandardItemModel::appendItem(KStandardItem *item)
-{
-    insertItem(m_items.count(), item);
-}
-
 void KStandardItemModel::removeItem(int index)
 {
     if (index >= 0 && index < count()) {
@@ -97,6 +96,7 @@ void KStandardItemModel::removeItem(int index)
         delete item;
         item = 0;
 
+        onItemRemoved(index);
         emit itemsRemoved(KItemRangeList() << KItemRange(index, 1));
         // TODO: no hierarchical items are handled yet
     }
@@ -115,6 +115,11 @@ int KStandardItemModel::index(const KStandardItem* item) const
     return m_indexesForItems.value(item, -1);
 }
 
+void KStandardItemModel::appendItem(KStandardItem *item)
+{
+    insertItem(m_items.count(), item);
+}
+
 int KStandardItemModel::count() const
 {
     return m_items.count();
@@ -186,4 +191,20 @@ QList<QPair<int, QVariant> > KStandardItemModel::groups() const
     return groups;
 }
 
+void KStandardItemModel::onItemInserted(int index)
+{
+    Q_UNUSED(index);
+}
+
+void KStandardItemModel::onItemReplaced(int index)
+{
+    Q_UNUSED(index);
+}
+
+void KStandardItemModel::onItemRemoved(int index)
+{
+    Q_UNUSED(index);
+}
+
+
 #include "kstandarditemmodel.moc"