From 00803262f83f5f8c0597f39220fa98c361d5d6e7 Mon Sep 17 00:00:00 2001
From: Sven Augustin <sven.augustin@psi.ch>
Date: Mon, 21 Jun 2021 12:49:10 +0200
Subject: [PATCH] first try on a file save/reload widget

---
 kabuki/widgets/__init__.py |  1 +
 kabuki/widgets/files.py    | 81 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 82 insertions(+)
 create mode 100644 kabuki/widgets/files.py

diff --git a/kabuki/widgets/__init__.py b/kabuki/widgets/__init__.py
index 123d6b4..98d06bb 100644
--- a/kabuki/widgets/__init__.py
+++ b/kabuki/widgets/__init__.py
@@ -1,4 +1,5 @@
 
 from .checkbox import Checkbox
+from .files import Files
 
 
diff --git a/kabuki/widgets/files.py b/kabuki/widgets/files.py
new file mode 100644
index 0000000..f849ace
--- /dev/null
+++ b/kabuki/widgets/files.py
@@ -0,0 +1,81 @@
+import json
+from pathlib import Path
+from bokeh.models import AutocompleteInput, Button, Div
+
+from ..buki import Column, Row
+from ..utils import adjust_margin
+
+
+BTN_WIDTH = 100
+
+
+class Files(Column):
+
+    def __init__(self, folder, title="Files", name=None, sizing_mode="stretch_width"):
+        self.folder = folder = Path(folder)
+        self.files = files = [str(i.relative_to(folder)) for i in folder.rglob("*")]
+
+        lbl =  Div(text=title)
+        adjust_margin(lbl, bottom=-10)
+
+        self.ai_fname = ai_fname = AutocompleteInput(value="", completions=files, restrict=False, min_characters=1, sizing_mode=sizing_mode)
+
+        self.btn_save = btn_save = Button(label="⮫🖫 save", width=BTN_WIDTH)
+        self.btn_load = btn_load = Button(label="🖫⮯ load",  width=BTN_WIDTH)
+
+        inner = Row(ai_fname, btn_save, btn_load)
+        super().__init__(lbl, inner, sizing_mode=sizing_mode)
+
+
+    def get_fname(self):
+        return self.ai_fname.value.strip()
+
+
+    def on_click_save(self, handler):
+        def wrapper(_event):
+            fn = self.get_fname()
+            if not fn:
+                print("empty filename")
+                return
+
+            self.files.append(fn)
+            self.ai_fname.completions.append(fn)
+
+            fn = self.folder / fn
+
+            data = handler()
+            json_save(data, fn)
+        self.btn_save.on_click(wrapper)
+
+
+    def on_click_load(self, handler):
+        def wrapper(_event):
+            fn = self.get_fname()
+            if not fn:
+                print("empty filename")
+                return
+
+            fn = self.folder / fn
+
+            data = json_load(fn)
+            handler(data)
+        self.btn_load.on_click(wrapper)
+
+
+
+
+
+def json_save(what, filename, *args, indent=4, sort_keys=True, **kwargs):
+    print("save to", filename)
+    with open(filename, "w") as f:
+        json.dump(what, f, *args, indent=indent, sort_keys=sort_keys, **kwargs)
+
+def json_load(filename, *args, **kwargs):
+    print("load from", filename)
+    with open(filename, "r") as f:
+        return json.load(f, *args, **kwargs)
+
+
+
+
+