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, 37 insertions, 1 deletions

diff --git a/src/kitemviews/kstandarditemmodel.h b/src/kitemviews/kstandarditemmodel.h
index 5cf60085b..d1a036fd0 100644
--- a/src/kitemviews/kstandarditemmodel.h
+++ b/src/kitemviews/kstandarditemmodel.h
@@ -43,13 +43,30 @@ public:
     explicit KStandardItemModel(QObject* parent = 0);
     virtual ~KStandardItemModel();
 
+    /**
+     * Inserts the item \a item at the index \a index. If the index
+     * is equal to the number of items of the model, the item
+     * gets appended as last element. KStandardItemModel takes
+     * the ownership of the item.
+     */
     void insertItem(int index, KStandardItem* item);
+
+    /**
+     * Replaces the item on the index \a index by \a item.
+     * KStandardItemModel takes the ownership of the item. The
+     * old item gets deleted.
+     */
     void replaceItem(int index, KStandardItem* item);
-    void appendItem(KStandardItem* item);
+
     void removeItem(int index);
     KStandardItem* item(int index) const;
     int index(const KStandardItem* item) const;
 
+    /**
+     * Convenience method for insertItem(count(), item).
+     */
+    void appendItem(KStandardItem* item);
+
     virtual int count() const;
     virtual QHash<QByteArray, QVariant> data(int index) const;
     virtual bool setData(int index, const QHash<QByteArray, QVariant>& values);
@@ -59,6 +76,25 @@ public:
     virtual QString roleDescription(const QByteArray& role) const;
     virtual QList<QPair<int, QVariant> > groups() const;
 
+protected:
+    /**
+     * Is invoked after an item has been inserted and before the signal
+     * itemsInserted() gets emitted.
+     */
+    virtual void onItemInserted(int index);
+
+    /**
+     * Is invoked after an item has been replaced and before the signal
+     * itemsChanged() gets emitted.
+     */
+    virtual void onItemReplaced(int index);
+
+    /**
+     * Is invoked after an item has been removed and before the signal
+     * itemsRemoved() gets emitted.
+     */
+    virtual void onItemRemoved(int index);
+
 private:
     QList<KStandardItem*> m_items;
     QHash<const KStandardItem*, int> m_indexesForItems;