Add QtRemoteObjects classes

For starters, add the classes so that ready-made classes like
QAbstractItemModelReplica can be used. Actually implementing repc
requires another step.

Task-number: PYSIDE-862
Change-Id: I28adb1d45c262f298f0ad1926198ec6a3013542f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

2 files changed, 202 insertions, 0 deletions

diff --git a/examples/remoteobjects/modelview/modelviewclient.py b/examples/remoteobjects/modelview/modelviewclient.py
new file mode 100644
index 000000000..319135886
--- /dev/null
+++ b/examples/remoteobjects/modelview/modelviewclient.py
@@ -0,0 +1,62 @@
+#############################################################################
+##
+## Copyright (C) 2017 Ford Motor Company
+## Copyright (C) 2019 The Qt Company Ltd.
+## Contact: http://www.qt.io/licensing/
+##
+## This file is part of the Qt for Python examples of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:BSD$
+## You may use this file under the terms of the BSD license as follows:
+##
+## "Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions are
+## met:
+##   * Redistributions of source code must retain the above copyright
+##     notice, this list of conditions and the following disclaimer.
+##   * Redistributions in binary form must reproduce the above copyright
+##     notice, this list of conditions and the following disclaimer in
+##     the documentation and/or other materials provided with the
+##     distribution.
+##   * Neither the name of The Qt Company Ltd nor the names of its
+##     contributors may be used to endorse or promote products derived
+##     from this software without specific prior written permission.
+##
+##
+## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+"""PySide2 port of the remoteobjects/modelviewclient example from Qt v5.x"""
+
+import sys
+
+from PySide2.QtCore import QUrl
+from PySide2.QtWidgets import (QApplication, QTreeView)
+from PySide2.QtRemoteObjects import (QAbstractItemModelReplica,
+                                     QRemoteObjectNode)
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    node = QRemoteObjectNode(QUrl("local:registry"))
+    node.setHeartbeatInterval(1000)
+    view = QTreeView()
+    view.setWindowTitle("RemoteView")
+    view.resize(640,480);
+    model = node.acquireModel("RemoteModel")
+    view.setModel(model);
+    view.show();
+
+    sys.exit(app.exec_())
diff --git a/examples/remoteobjects/modelview/modelviewserver.py b/examples/remoteobjects/modelview/modelviewserver.py
new file mode 100644
index 000000000..069cc1d2c
--- /dev/null
+++ b/examples/remoteobjects/modelview/modelviewserver.py
@@ -0,0 +1,140 @@
+#############################################################################
+##
+## Copyright (C) 2017 Ford Motor Company
+## Copyright (C) 2019 The Qt Company Ltd.
+## Contact: http://www.qt.io/licensing/
+##
+## This file is part of the Qt for Python examples of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:BSD$
+## You may use this file under the terms of the BSD license as follows:
+##
+## "Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions are
+## met:
+##   * Redistributions of source code must retain the above copyright
+##     notice, this list of conditions and the following disclaimer.
+##   * Redistributions in binary form must reproduce the above copyright
+##     notice, this list of conditions and the following disclaimer in
+##     the documentation and/or other materials provided with the
+##     distribution.
+##   * Neither the name of The Qt Company Ltd nor the names of its
+##     contributors may be used to endorse or promote products derived
+##     from this software without specific prior written permission.
+##
+##
+## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+"""PySide2 port of the remoteobjects/modelviewserver example from Qt v5.x"""
+
+import sys
+
+from PySide2.QtCore import (Qt, QByteArray, QModelIndex, QObject, QTimer, QUrl)
+from PySide2.QtGui import (QColor, QStandardItemModel, QStandardItem)
+from PySide2.QtWidgets import (QApplication, QTreeView)
+from PySide2.QtRemoteObjects import (QRemoteObjectHost, QRemoteObjectNode,
+                                     QRemoteObjectRegistryHost)
+
+class TimerHandler(QObject):
+    def __init__(self, model):
+        super(TimerHandler, self).__init__()
+        self._model = model
+
+    def change_data(self):
+        for i in range(10, 50):
+            self._model.setData(self._model.index(i, 1),
+                                QColor(Qt.blue), Qt.BackgroundRole)
+
+    def insert_data(self):
+        self._model.insertRows(2, 9);
+        for i in range(2, 11):
+            self._model.setData(self._model.index(i, 1),
+                                QColor(Qt.green), Qt.BackgroundRole)
+            self._model.setData(self._model.index(i, 1),
+                                "InsertedRow", Qt.DisplayRole)
+
+    def remove_data(self):
+        self._model.removeRows(2, 4)
+
+    def change_flags(self):
+        item = self._model.item(0, 0)
+        item.setEnabled(False)
+        item = item.child(0, 0)
+        item.setFlags(item.flags() & Qt.ItemIsSelectable)
+
+    def move_data(self):
+        self._model.moveRows(QModelIndex(), 2, 4, QModelIndex(), 10)
+
+
+def add_child(num_children, nesting_level):
+    result = []
+    if nesting_level == 0:
+        return result;
+    for i in range(num_children):
+        child = QStandardItem("Child num {}, nesting Level {}".format(i + 1,
+                              nesting_level))
+        if i == 0:
+            child.appendRow(add_child(num_children, nesting_level -1))
+        result.append(child)
+    return result;
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    model_size = 100000;
+    list = []
+    source_model = QStandardItemModel()
+    horizontal_header_list = ["First Column with spacing",
+                              "Second Column with spacing"]
+    source_model.setHorizontalHeaderLabels(horizontal_header_list)
+    for i in range(model_size):
+        first_item = QStandardItem("FancyTextNumber {}".format(i))
+        if i == 0:
+            first_item.appendRow(add_child(2, 2))
+        second_item = QStandardItem("FancyRow2TextNumber {}".format(i))
+        if i % 2 == 0:
+            first_item.setBackground(Qt.red)
+        row = [first_item, second_item]
+        source_model.invisibleRootItem().appendRow(row)
+        list.append("FancyTextNumber {}".format(i))
+
+    # Needed by QMLModelViewClient
+    role_names = {
+        Qt.DisplayRole : QByteArray(b'_text'),
+        Qt.BackgroundRole : QByteArray(b'_color')
+    }
+    source_model.setItemRoleNames(role_names)
+
+    roles = [Qt.DisplayRole, Qt.BackgroundRole]
+
+    print("Creating registry host")
+    node = QRemoteObjectRegistryHost(QUrl("local:registry"))
+
+    node2 = QRemoteObjectHost(QUrl("local:replica"), QUrl("local:registry"))
+    node2.enableRemoting(source_model, "RemoteModel", roles)
+
+    view = QTreeView()
+    view.setWindowTitle("SourceView")
+    view.setModel(source_model)
+    view.show()
+    handler = TimerHandler(source_model)
+    QTimer.singleShot(5000, handler.change_data)
+    QTimer.singleShot(10000, handler.insert_data)
+    QTimer.singleShot(11000, handler.change_flags)
+    QTimer.singleShot(12000, handler.remove_data)
+    QTimer.singleShot(13000, handler.move_data)
+
+    sys.exit(app.exec_())