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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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+****************************************************************************/
+
+/*!
+    \example itemviews/fetchmore
+    \title Fetch More Example
+
+    The Fetch More example shows how two add items to an item view
+    model on demand.
+
+    \image fetchmore-example.png
+
+    The user of the example can enter a directory in the \gui
+    Directory line edit. The contents of the directory will
+    be listed in the list view below.
+
+    When you have large - or perhaps even infinite - data sets, you
+    will need to add items to the model in batches, and preferably only
+    when the items are needed by the view (i.e., when they are visible
+    in the view).
+
+    In this example, we implement \c FileListModel - an item view
+    model containing the entries of a directory. We also have \c
+    Window, which sets up the GUI and feeds the model with
+    directories.
+
+    Let's take a tour of \c {FileListModel}'s code.
+
+    \section1 FileListModel Class Definition
+
+    The \c FileListModel inherits QAbstractListModel and contains the
+    contents of a directory. It will add items to itself only when
+    requested to do so by the view.
+
+    \snippet examples/itemviews/fetchmore/filelistmodel.h 0
+
+    The secret lies in the reimplementation of
+    \l{QAbstractItemModel::}{fetchMore()} and
+    \l{QAbstractItemModel::}{canFetchMore()} from QAbstractItemModel.
+    These functions are called by the item view when it needs more
+    items. 
+
+    The \c setDirPath() function sets the directory the model will
+    work on. We emit \c numberPopulated() each time we add a batch of
+    items to the model.
+
+    We keep all directory entries in \c fileList. \c fileCount is the
+    number of items that have been added to the model.
+
+    \section1 FileListModel Class Implementation
+
+    We start by checking out the \c setDirPath().
+
+    \snippet examples/itemviews/fetchmore/filelistmodel.cpp 0
+
+    We use a QDir to get the contents of the directory. We need to
+    inform QAbstractItemModel that we want to remove all items - if
+    any - from the model.
+
+    \snippet examples/itemviews/fetchmore/filelistmodel.cpp 1
+
+    The \c canFetchMore() function is called by the view when it needs
+    more items. We return true if there still are entries that we have
+    not added to the model; otherwise, we return false.
+
+    And now, the \c fetchMore() function itself:
+
+    \snippet examples/itemviews/fetchmore/filelistmodel.cpp 2
+
+    We first calculate the number of items to fetch.
+    \l{QAbstractItemModel::}{beginInsertRows()} and
+    \l{QAbstractItemModel::}{endInsertRows()} are mandatory for
+    QAbstractItemModel to keep up with the row insertions. Finally, we
+    emit \c numberPopulated(), which is picked up by \c Window.
+
+    To complete the tour, we also look at \c rowCount() and \c data().
+
+    \snippet examples/itemviews/fetchmore/filelistmodel.cpp 4
+
+    Notice that the row count is only the items we have added so far,
+    i.e., not the number of entries in the directory.
+
+    In \c data(), we return the appropriate entry from the \c
+    fileList. We also separate the batches with a different background
+    color.
+*/
+