Update _widget_reader.py

src/yt_napari/_widget_reader.py

@@ -5,12 +5,13 @@
 from magicgui import widgets
 from napari.qt.threading import thread_worker
 from qtpy import QtCore
-from qtpy.QtWidgets import QComboBox, QHBoxLayout, QPushButton, QVBoxLayout, QWidget
-
+from qtpy.QtWidgets import QVBoxLayout, QWidget, QFileDialog, QApplication
+from qtpy.QtWidgets import QComboBox, QHBoxLayout, QPushButton
 from yt_napari import _data_model, _gui_utilities, _model_ingestor
 from yt_napari._ds_cache import dataset_cache
 from yt_napari.viewer import _check_for_reference_layer
-
+import sys
+import json
 
 class YTReader(QWidget):
     _pydantic_model = None
@@ -106,6 +107,26 @@
         load_group.addWidget(cc.native)
         self.layout().addLayout(load_group)
 
+        ss = widgets.PushButton(text="Save Selection")
+        ss.clicked.connect(self.save_selection)
+        load_group.addWidget(ss.native)
+
+    def save_selection(self):
+        py_kwargs = {}
+        py_kwargs = self._validate_data_model()
+
+        file_dialog = QFileDialog()
+        file_dialog.setFileMode(QFileDialog.AnyFile)
+        file_dialog.setAcceptMode(QFileDialog.AcceptSave)
+        file_dialog.setNameFilter("JSON Files (*.json);;All Files (*)")
+
+        if file_dialog.exec_():
+            file_path = file_dialog.selectedFiles()[0]
+            if file_path:
+                # Save the JSON data to the selected file
+                with open(file_path, 'w') as json_file:
+                    json.dump(py_kwargs, json_file, indent=4)    
+
     def clear_cache(self):
         dataset_cache.rm_all()
 
@@ -114,7 +135,29 @@
         # instantiate pydantic objects, which are then handed off to the
         # same data ingestion function as the json loader.
 
-        # first, get the pydantic args for each selection type, embed in lists
+        py_kwargs = {}
+        py_kwargs = self._validate_data_model()
+        model = _data_model.InputModel.parse_obj(py_kwargs)
+
+        # process each layer
+        layer_list, _ = _model_ingestor._process_validated_model(model)
+
+        # align all layers after checking for or setting the reference layer
+        ref_layer = _check_for_reference_layer(self.viewer.layers)
+        if ref_layer is None:
+            ref_layer = _model_ingestor._choose_ref_layer(layer_list)
+        layer_list = ref_layer.align_sanitize_layers(layer_list)
+
+        for new_layer in layer_list:
+            im_arr, im_kwargs, _ = new_layer
+            if self._post_load_function is not None:
+                im_arr = self._post_load_function(im_arr)
+
+            # add the new layer
+            self.viewer.add_image(im_arr, **im_kwargs)
+
+    def _validate_data_model(self):
+        # this function save json data
         selections_by_type = defaultdict(list)
         for selection in self.active_selections.values():
             py_kwargs = selection.get_current_pydantic_kwargs()
@@ -129,34 +172,17 @@
             py_kwargs,
             ignore_attrs="selections",
         )
-
         # add selections in
         py_kwargs["selections"] = selections_by_type
 
         # now ready to instantiate the base model
         py_kwargs = {
+            "$schema": "https://yt-napari.readthedocs.io/en/latest/_static/yt-napari_latest.json",
             "datasets": [
                 py_kwargs,
             ]
         }
-        model = _data_model.InputModel.parse_obj(py_kwargs)
-
-        # process each layer
-        layer_list, _ = _model_ingestor._process_validated_model(model)
-
-        # align all layers after checking for or setting the reference layer
-        ref_layer = _check_for_reference_layer(self.viewer.layers)
-        if ref_layer is None:
-            ref_layer = _model_ingestor._choose_ref_layer(layer_list)
-        layer_list = ref_layer.align_sanitize_layers(layer_list)
-
-        for new_layer in layer_list:
-            im_arr, im_kwargs, _ = new_layer
-            if self._post_load_function is not None:
-                im_arr = self._post_load_function(im_arr)
-
-            # add the new layer
-            self.viewer.add_image(im_arr, **im_kwargs)
+        return py_kwargs
 
 
 class SelectionEntry(QWidget):
@@ -223,7 +249,50 @@
         load_group.addWidget(pb.native)
         self.layout().addLayout(load_group)
 
+        ss = widgets.PushButton(text="Save Selection")
+        ss.clicked.connect(self.save_selection)
+        load_group.addWidget(ss.native)
+
+    def save_selection(self):
+        py_kwargs = {}
+        py_kwargs = self._validate_data_model()
+        # model = _data_model.InputModel.parse_obj(py_kwargs)
+
+        file_dialog = QFileDialog()
+        file_dialog.setFileMode(QFileDialog.AnyFile)
+        file_dialog.setAcceptMode(QFileDialog.AcceptSave)
+        file_dialog.setNameFilter("JSON Files (*.json);;All Files (*)")
+
+        if file_dialog.exec_():
+            file_path = file_dialog.selectedFiles()[0]
+            if file_path:
+                # Save the JSON data to the selected file
+                with open(file_path, 'w') as json_file:
+                    json.dump(py_kwargs, json_file, indent=4)    
+
     def load_data(self):
+        py_kwargs = {}
+        py_kwargs = self._validate_data_model()    
+        model = _data_model.InputModel.parse_obj(py_kwargs)
+
+        if _use_threading:
+            worker = time_series_load(model)
+            worker.returned.connect(self.process_timeseries_layers)
+            worker.start()
+        else:
+            _, layer_list = _model_ingestor._process_validated_model(model)
+            self.process_timeseries_layers(layer_list)
+
+    def process_timeseries_layers(self, layer_list):
+        for new_layer in layer_list:
+            im_arr, im_kwargs, _ = new_layer
+            # probably can remove since the _special_loaders can be used
+            # if self._post_load_function is not None:
+            #     im_arr = self._post_load_function(im_arr)
+            # add the new layer
+            self.viewer.add_image(im_arr, **im_kwargs)
+
+    def _validate_data_model(self):
         # first, get the pydantic args for each selection type, embed in lists
         selections_by_type = defaultdict(list)
         for selection in self.active_selections.values():
@@ -254,30 +323,12 @@
 
         # now ready to instantiate the base model
         py_kwargs = {
+            "$schema": "https://yt-napari.readthedocs.io/en/latest/_static/yt-napari_latest.json",
             "timeseries": [
                 py_kwargs,
             ]
         }
-
-        model = _data_model.InputModel.parse_obj(py_kwargs)
-
-        if _use_threading:
-            worker = time_series_load(model)
-            worker.returned.connect(self.process_timeseries_layers)
-            worker.start()
-        else:
-            _, layer_list = _model_ingestor._process_validated_model(model)
-            self.process_timeseries_layers(layer_list)
-
-    def process_timeseries_layers(self, layer_list):
-        for new_layer in layer_list:
-            im_arr, im_kwargs, _ = new_layer
-            # probably can remove since the _special_loaders can be used
-            # if self._post_load_function is not None:
-            #     im_arr = self._post_load_function(im_arr)
-            # add the new layer
-            self.viewer.add_image(im_arr, **im_kwargs)
-
+        return py_kwargs
 
 @thread_worker(progress=True)
 def time_series_load(model):