1 files changed, 120 insertions, 0 deletions
diff --git a/src/Authoring/Qt3DStudio/Palettes/Inspector/TabOrderHandler.cpp b/src/Authoring/Qt3DStudio/Palettes/Inspector/TabOrderHandler.cpp
new file mode 100644
index 00000000..1f4b8632
--- /dev/null
+++ b/src/Authoring/Qt3DStudio/Palettes/Inspector/TabOrderHandler.cpp
@@ -0,0 +1,120 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "TabOrderHandler.h"
+
+TabOrderHandler::TabOrderHandler(QObject *parent)
+    : QObject(parent)
+{
+
+}
+
+TabOrderHandler::~TabOrderHandler()
+{
+
+}
+
+void TabOrderHandler::addItem(int group, QQuickItem *item)
+{
+    m_itemMap[group].append(item);
+}
+
+void TabOrderHandler::clear()
+{
+    m_itemMap.clear();
+}
+
+void TabOrderHandler::clearGroup(int group)
+{
+    m_itemMap[group].clear();
+}
+
+void TabOrderHandler::tabNavigate(bool tabForward)
+{
+    // Find the currently focused control
+    for (int i = 0; i < m_itemMap.size(); i++) {
+        const QList<QQuickItem *> items = m_itemMap[i];
+        for (int j = 0; j < items.size(); j++) {
+            if (items[j]->hasActiveFocus()) {
+                if (tabForward)
+                    nextItem(i, j)->forceActiveFocus(Qt::TabFocusReason);
+                else
+                    previousItem(i, j)->forceActiveFocus(Qt::BacktabFocusReason);
+                return;
+            }
+        }
+    }
+    // Activate the first item if could not find currently focused item
+    for (int i = 0; i < m_itemMap.size(); i++) {
+        if (m_itemMap[i].size() > 0)
+            m_itemMap[i][0]->forceActiveFocus(Qt::TabFocusReason);
+    }
+}
+
+QQuickItem *TabOrderHandler::nextItem(int group, int index)
+{
+    if (m_itemMap[group].size() > index + 1) {
+        // Try next item in group
+        index++;
+    } else {
+        // Get item in next available group
+        int nextGroup = group + 1;
+        while (nextGroup != group) {
+            if (nextGroup >= m_itemMap.size())
+                nextGroup = 0;
+            if (m_itemMap[nextGroup].size() == 0)
+                nextGroup++;
+            else
+                group = nextGroup;
+        }
+        index = 0;
+    }
+    return m_itemMap[group][index];
+}
+
+QQuickItem *TabOrderHandler::previousItem(int group, int index)
+{
+    if (index - 1 >= 0) {
+        // Try previous item in group
+        index--;
+    } else {
+        // Get last item in previous available group
+        int nextGroup = group - 1;
+        while (nextGroup != group) {
+            if (nextGroup < 0)
+                nextGroup = m_itemMap.size() - 1;
+            if (m_itemMap[nextGroup].size() == 0)
+                nextGroup--;
+            else
+                group = nextGroup;
+        }
+        index = m_itemMap[group].size() - 1;
+    }
+    return m_itemMap[group][index];
+}
+