Mini browser window for #33

countess/gui/main.py

@@ -3,7 +3,6 @@
 import sys
 import threading
 import tkinter as tk
-import webbrowser
 from tkinter import filedialog, messagebox, ttk
 from typing import Optional
 
@@ -15,6 +14,7 @@
 from countess.core.plugins import get_plugin_classes
 from countess.gui.config import PluginConfigurator
 from countess.gui.logger import LoggerFrame
+from countess.gui.mini_browser import MiniBrowserFrame
 from countess.gui.tabular import TabularDataFrame
 from countess.gui.tree import FlippyCanvas, GraphWrapper
 from countess.gui.widgets import info_button
@@ -57,6 +57,8 @@ class ConfiguratorWrapper:
     config_change_task = None
     notes_widget = None
     node_update_thread = None
+    info_toplevel = None
+    info_frame = None
 
     def __init__(self, frame, node, change_callback):
         self.frame = frame
@@ -138,7 +140,17 @@ def on_label_configure(self, *_):
         self.label["wraplength"] = self.label.winfo_width() - 20
 
     def on_info_button_press(self, *_):
-        webbrowser.open_new_tab(self.node.plugin.link)
+        if self.info_toplevel is None:
+            self.info_toplevel = tk.Toplevel()
+            self.info_toplevel.protocol("WM_DELETE_WINDOW", self.on_info_toplevel_close)
+            self.info_frame = MiniBrowserFrame(self.info_toplevel, self.node.plugin.link)
+            self.info_frame.pack(fill="both", expand=True)
+        else:
+            self.info_frame.load_url(self.node.plugin.link)
+
+    def on_info_toplevel_close(self):
+        self.info_toplevel.destroy()
+        self.info_toplevel = None
 
     def on_add_notes(self, *_):
         self.notes_widget.destroy()

countess/gui/mini_browser.py

@@ -0,0 +1,54 @@
+import tkinter as tk
+from urllib.parse import urlparse
+import webbrowser
+
+from tkinterweb import HtmlFrame #import the HTML browser
+
+MINI_CSS = """
+    * { padding: 10px; line-height: 150% }
+    th, td { border: 1px solid #AAA; border-collapse: collapse; }
+    code { border: 1px solid #AAA; font-family: monospace; }
+    th code, td code { border: 0px; }
+"""
+
+class MiniBrowserFrame(tk.Frame):
+
+    def __init__(self, tk_parent, start_url, *a, **k):
+        super().__init__(tk_parent, *a, **k)
+        tk.Label(self, text="Documentation Preview").pack(fill="both")
+
+        self.html_frame = HtmlFrame(self, messages_enabled=False)
+        self.html_frame.enable_stylesheets(False)
+        self.html_frame.enable_objects(False)
+        self.html_frame.enable_forms(False)
+        self.html_frame.on_done_loading(self.on_done_loading)
+        self.html_frame.on_link_click(self.on_link_click)
+
+        self.html_frame.pack(fill="both", expand=True)
+
+        tk.Button(self, text="Open in Browser", command=self.on_browser_button).pack()
+
+        self.load_url(start_url)
+
+    def load_url(self, link_url):
+        self.current_url = link_url
+        self.html_frame.load_url(link_url)
+
+    def on_browser_button(self):
+        webbrowser.open_new_tab(self.current_url)
+
+    def on_done_loading(self):
+        self.html_frame.add_css(MINI_CSS)
+
+    def on_link_click(self, link_url):
+        if urlparse(self.current_url)[0:2] == urlparse(link_url)[0:2]:
+            self.load_url(link_url)
+        else:
+            webbrowser.open_new_tab(link_url)
+
+
+if __name__ == '__main__':
+    root = tk.Tk()
+    url = "https://countess-project.github.io/CountESS/"
+    MiniBrowserFrame(root, url).pack(fill="both", expand=True)
+    root.mainloop()

pyproject.toml

@@ -26,6 +26,7 @@ dependencies = [
     'pandas~=2.1.0',
     'psutil~=5.9.5',
     'rapidfuzz~=2.15.1',
+    'tkinterweb~=3.23.5',
     'ttkthemes~=3.2.2',
     'typing_extensions~=4.8.0',
 ]