Trying to implement QAbstractItemModel for parse trees, haven't got it working yet (current state will spawn an empty treeview window)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26318 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 101 insertions, 0 deletions

diff --git a/utils/themeeditor/parsetreemodel.cpp b/utils/themeeditor/parsetreemodel.cpp
new file mode 100644
index 0000000..cf6af14
--- /dev/null
+++ b/utils/themeeditor/parsetreemodel.cpp
@@ -0,0 +1,101 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Robert Bieber
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+
+#include "parsetreemodel.h"
+#include <QObject>
+
+ParseTreeModel::ParseTreeModel(char* wps, QObject* parent):
+        QAbstractItemModel(parent)
+{
+    this->wps = skin_parse(wps);
+    skin_debug_tree(this->wps);
+    this->root = new ParseTreeNode(this->wps, 0, true);
+}
+
+
+ParseTreeModel::~ParseTreeModel()
+{
+    delete root;
+}
+
+QModelIndex ParseTreeModel::index(int row, int column,
+                                  const QModelIndex& parent) const
+{
+    if(!hasIndex(row, column, parent))
+        return QModelIndex();
+
+    ParseTreeNode* parentLookup;
+
+    if(!parent.isValid())
+        parentLookup = root;
+    else
+        parentLookup = static_cast<ParseTreeNode*>(parent.internalPointer());
+
+    ParseTreeNode* childLookup = parentLookup->child(row);
+    if(childLookup)
+        return createIndex(row, column, childLookup);
+    else
+        return QModelIndex();
+}
+
+QModelIndex ParseTreeModel::parent(const QModelIndex &child) const
+{
+    if(!child.isValid())
+        return QModelIndex();
+
+    ParseTreeNode* childLookup = static_cast<ParseTreeNode*>
+                                 (child.internalPointer());
+    ParseTreeNode* parentLookup = childLookup->parent();
+
+    if(parentLookup == root)
+        return QModelIndex();
+
+    return createIndex(parentLookup->row(), 0, parentLookup);
+}
+
+int ParseTreeModel::rowCount(const QModelIndex &parent) const
+{
+    ParseTreeNode* parentLookup;
+    if(parent.column() > 0)
+        return 0;
+
+    if(!parent.isValid())
+        parentLookup = root;
+    else
+        parentLookup = static_cast<ParseTreeNode*>(parent.internalPointer());
+
+    return parentLookup->childCount();
+}
+
+int ParseTreeModel::columnCount(const QModelIndex &parent) const
+{
+    return 2;
+}
+
+QVariant ParseTreeModel::data(const QModelIndex &index, int role) const
+{
+    if(!index.isValid() || role != Qt::DisplayRole)
+        return QVariant();
+
+    ParseTreeNode* item = static_cast<ParseTreeNode*>(index.internalPointer());
+    return item->data(index.column());
+}