summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
authorDavid Boddie <dboddie@trolltech.com>2010-05-04 12:24:27 (GMT)
committerDavid Boddie <dboddie@trolltech.com>2010-05-04 12:24:27 (GMT)
commitd93ac74d40f18e0670580ed923bdae2b3c6e9fbb (patch)
tree1bbda17e59f090832780ecd2458a4ab154f50aa8 /src
parent4d3604813bff632de6c319567c0f34375d9c6dc0 (diff)
parent64f1241f6419ca5e8e26a84db1e2f055f9919d1e (diff)
downloadQt-d93ac74d40f18e0670580ed923bdae2b3c6e9fbb.zip
Qt-d93ac74d40f18e0670580ed923bdae2b3c6e9fbb.tar.gz
Qt-d93ac74d40f18e0670580ed923bdae2b3c6e9fbb.tar.bz2
Merge commit 'refs/merge-requests/2379' of git://gitorious.org/qt/qt into integration
Diffstat (limited to 'src')
-rw-r--r--src/corelib/kernel/qabstractitemmodel.cpp56
1 files changed, 56 insertions, 0 deletions
diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp
index b0503be..3660a3c 100644
--- a/src/corelib/kernel/qabstractitemmodel.cpp
+++ b/src/corelib/kernel/qabstractitemmodel.cpp
@@ -2530,6 +2530,62 @@ bool QAbstractItemModelPrivate::allowMove(const QModelIndex &srcParent, int star
condition is true, in which case you should abort your move
operation.
+ \table 80%
+ \row
+ \o \inlineimage modelview-move-rows-1.png Moving rows to another parent
+ \o Specify the first and last row numbers for the span of rows in
+ the source parent you want to move in the model. Also specify
+ the row in the destination parent to move the span to.
+
+ For example, as shown in the diagram, we move three rows from
+ row 2 to 4 in the source, so \a sourceFirst is 2 and \a sourceLast is 4.
+ We move those items to above row 2 in the destination, so \a destinationRow is 2.
+
+ \snippet doc/src/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp 6
+
+ This moves the three rows rows 2, 3, and 4 in the source to become 2, 3 and 4 in
+ the destination. Other affected siblings are displaced accordingly.
+ \row
+ \o \inlineimage modelview-move-rows-2.png Moving rows to append to another parent
+ \o To append rows to another parent, move them to after the last row.
+
+ For example, as shown in the diagram, we move three rows to a
+ collection of 6 existing rows (ending in row 5), so \a destinationStart is 6:
+
+ \snippet doc/src/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp 7
+
+ This moves the target rows to the end of the target parent as 6, 7 and 8.
+ \row
+ \o \inlineimage modelview-move-rows-3.png Moving rows in the same parent up
+ \o To move rows within the same parent, specify the row to move them to.
+
+ For example, as shown in the diagram, we move one item from row 2 to row 0,
+ so \a sourceFirst and \a sourceLast are 2 and \a destinationChild is 0.
+
+ \snippet doc/src/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp 8
+
+ Note that other rows may be displaced accordingly. Note also that when moving
+ items within the same parent you should not attempt invalid or no-op moves. In
+ the above example, item 2 is at row 2 before the move, so it can not be moved
+ to row 2 (where it is already) or row 3 (no-op as row 3 means above row 3, where
+ it is already)
+
+ \row
+ \o \inlineimage modelview-move-rows-4.png Moving rows in the same parent down
+ \o To move rows within the same parent, specify the row to move them to.
+
+ For example, as shown in the diagram, we move one item from row 2 to row 4,
+ so \a sourceFirst and \a sourceLast are 2 and \a destinationChild is 4.
+
+ \snippet doc/src/snippets/code/src_corelib_kernel_qabstractitemmodel.cpp 9
+
+ Note that other rows may be displaced accordingly.
+ \endtable
+
+ \note This function emits the rowsAboutToBeInserted() signal which
+ connected views (or proxies) must handle before the data is inserted.
+ Otherwise, the views may end up in an invalid state.
+
\sa endMoveRows()
\since 4.6