[widgets] Implement minimal asset browser widget

beat/editor/widgets/__init__.py

+# vim: set fileencoding=utf-8 :
+###############################################################################
+#                                                                             #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/           #
+# Contact: beat.support@idiap.ch                                              #
+#                                                                             #
+# This file is part of the beat.editor module of the BEAT platform.           #
+#                                                                             #
+# Commercial License Usage                                                    #
+# Licensees holding valid commercial BEAT licenses may use this file in       #
+# accordance with the terms contained in a written agreement between you      #
+# and Idiap. For further information contact tto@idiap.ch                     #
+#                                                                             #
+# Alternatively, this file may be used under the terms of the GNU Affero      #
+# Public License version 3 as published by the Free Software and appearing    #
+# in the file LICENSE.AGPL included in the packaging of this file.            #
+# The BEAT platform is distributed in the hope that it will be useful, but    #
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY  #
+# or FITNESS FOR A PARTICULAR PURPOSE.                                        #
+#                                                                             #
+# You should have received a copy of the GNU Affero Public License along      #
+# with the BEAT platform. If not, see http://www.gnu.org/licenses/.           #
+#                                                                             #
+###############################################################################

beat/editor/widgets/assetbrowser.py

+# vim: set fileencoding=utf-8 :
+###############################################################################
+#                                                                             #
+# Copyright (c) 2019 Idiap Research Institute, http://www.idiap.ch/           #
+# Contact: beat.support@idiap.ch                                              #
+#                                                                             #
+# This file is part of the beat.editor module of the BEAT platform.           #
+#                                                                             #
+# Commercial License Usage                                                    #
+# Licensees holding valid commercial BEAT licenses may use this file in       #
+# accordance with the terms contained in a written agreement between you      #
+# and Idiap. For further information contact tto@idiap.ch                     #
+#                                                                             #
+# Alternatively, this file may be used under the terms of the GNU Affero      #
+# Public License version 3 as published by the Free Software and appearing    #
+# in the file LICENSE.AGPL included in the packaging of this file.            #
+# The BEAT platform is distributed in the hope that it will be useful, but    #
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY  #
+# or FITNESS FOR A PARTICULAR PURPOSE.                                        #
+#                                                                             #
+# You should have received a copy of the GNU Affero Public License along      #
+# with the BEAT platform. If not, see http://www.gnu.org/licenses/.           #
+#                                                                             #
+###############################################################################
+
+from PyQt5.QtCore import pyqtSignal
+
+from PyQt5.QtWidgets import QFileSystemModel
+from PyQt5.QtWidgets import QTreeView
+from PyQt5.QtWidgets import QVBoxLayout
+from PyQt5.QtWidgets import QWidget
+
+
+class AssetBrowser(QWidget):
+    """
+    Widget that will allow to browse the various assets
+    """
+
+    json_selected = pyqtSignal(["QString"])
+
+    def __init__(self, parent=None):
+        """Constructor"""
+
+        super(AssetBrowser, self).__init__(parent)
+        self.filesystemModel = QFileSystemModel()
+        self.view = QTreeView()
+        self.view.setModel(self.filesystemModel)
+
+        layout = QVBoxLayout(self)
+        layout.addWidget(self.view)
+
+        self.view.doubleClicked.connect(self.__on_item_selected)
+
+    def __on_item_selected(self, index):
+        """When an item is selected, emit the json_selected signal with
+        the corresponding JSON file path.
+        """
+
+        if self.filesystemModel.type(index).lower() == "json file":
+            self.json_selected.emit(self.filesystemModel.filePath(index))
+
+    def set_prefix_root(self, prefix_root_path):
+        """Sets the root path of the prefix to edit"""
+
+        self.filesystemModel.setRootPath(prefix_root_path)
+        self.view.setRootIndex(self.filesystemModel.index(prefix_root_path))