# -*- coding: utf-8 -*-
"""The start node in a flowchart"""
import copy
import pprint # noqa: F401
import tkinter as tk
import tkinter.ttk as ttk
import seamm
import seamm_widgets as sw
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class TkStartNode(seamm.TkNode):
"""The Tk-based graphical representation of a Start node"""
anchor_points = {
"s": (0, 0.5),
"e": (0.5, 0.0),
"w": (-0.5, 0.0),
}
def __init__(
self, tk_flowchart=None, node=None, canvas=None, x=150, y=50, w=200, h=50
):
"""Initialize a node
Keyword arguments:
"""
super().__init__(
tk_flowchart=tk_flowchart, node=node, canvas=canvas, x=x, y=y, w=w, h=h
)
# Temporary storage for authors
self._author_data = []
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def right_click(self, event):
"""Display the properties of the flowchart."""
if self.popup_menu is not None:
self.popup_menu.destroy()
self.popup_menu = tk.Menu(self.canvas, tearoff=0)
self.popup_menu.add_command(label="Edit..", command=self.edit)
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def edit(self):
"""Present a dialog for editing this step's parameters.
Subclasses can override this.
"""
# Create the dialog if it doesn't exist
if self.dialog is None:
self.create_dialog()
# After full creation, reset the dialog. This may do nothing,
# or may layout the widgets, but can only be done after fully
# creating the dialog.
self.reset_dialog()
# And resize the dialog to fit...
self.fit_dialog()
self.update_widgets()
# And put it on-screen, the first time centered.
result = self.dialog.activate(geometry="centerscreenfirst")
if result == "OK":
self.capture_metadata()
self.cleanup_authors()
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def cleanup_authors(self):
"""Destroy the internal widgets and reset the internal author data."""
for data in self._author_data:
for w in data["widgets"].values():
w.destroy()
self._author_data = []
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def create_dialog(self):
"""Create a dialog for editing the flowchart properties."""
frame = super().create_dialog("Flowchart Properties")
f = self.create_frame(frame)
f.grid(row=0, column=0, sticky=tk.NSEW)
f.rowconfigure(0, weight=1)
f.columnconfigure(0, weight=1)
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def create_frame(self, parent_widget):
"""Create a frame for editing the flowchart properties."""
frame = self["inner frame"] = ttk.Frame(parent_widget)
# Create the widgets and grid them in
row = 0
# title
w = self["title"] = sw.LabeledEntry(frame, labeltext="Title:", width=100)
w.grid(row=row, column=0, sticky=tk.EW)
row += 1
# description
w = self["description label"] = ttk.Label(frame, text="Description")
w.grid(row=row, column=0)
row += 1
w = self["description frame"] = sw.ScrolledFrame(
frame, scroll_vertically=True, borderwidth=2, relief=tk.SUNKEN
)
w.grid(row=row, column=0, sticky=tk.NSEW)
row += 1
f = w.interior()
w = self["description"] = tk.Text(f, wrap=tk.WORD, font=("Helvetica",))
w.grid(sticky=tk.NSEW)
f.rowconfigure(0, weight=1)
f.columnconfigure(0, weight=1)
# keywords
w = self["keywords"] = sw.LabeledEntry(
frame, labeltext="Keywords (comma separated):", width=100
)
w.grid(row=row, column=0, sticky=tk.EW)
row += 1
# grants
w = self["grants"] = sw.LabeledEntry(
frame, labeltext="Grants (DOIs, comma separated):", width=100
)
w.grid(row=row, column=0, sticky=tk.EW)
row += 1
# authors
w = self["authors label"] = ttk.Label(frame, text="Authors")
w.grid(row=row, column=0)
row += 1
w = self["authors frame"] = sw.ScrolledFrame(
frame, scroll_vertically=True, borderwidth=2, relief=tk.SUNKEN
)
w.grid(row=row, column=0, sticky=tk.NSEW)
row += 1
f = w.interior()
self["name label"] = ttk.Label(f, text="Name (last, others)")
self["orcid label"] = ttk.Label(f, text="ORCID")
self["affiliation label"] = ttk.Label(f, text="Affiliation")
frame.columnconfigure(0, weight=1)
return frame
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def draw(self):
"""Draw the node on the given canvas, making it visible"""
# the outline
x0 = self.x - self.w / 2
x1 = x0 + self.w
y0 = self.y - self.h / 2
y1 = y0 + self.h
self.border = self.canvas.create_oval(
x0,
y0,
x1,
y1,
tags=[self.tag, "type=outline"],
fill="white",
)
# the label in the middle
self.title_label = self.canvas.create_text(
self.x, self.y, text=self.title, tags=[self.tag, "type=title"]
)
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def handle_dialog(self, result):
self.dialog.deactivate(result)
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def layout_authors(self):
"""Layout the table of authors."""
frame = self["authors frame"].interior()
# Unpack any widgets
for slave in frame.grid_slaves():
slave.grid_forget()
# Put in the column headers.
row = 0
self["name label"].grid(row=row, column=1)
self["orcid label"].grid(row=row, column=2)
self["affiliation label"].grid(row=row, column=3)
row += 1
for data in self._author_data:
name = data["name"]
orcid = data.get("orcid", "")
affiliation = data.get("affiliation", "")
if "widgets" not in data:
widgets = data["widgets"] = {}
else:
widgets = data["widgets"]
if "remove" not in widgets:
# The button to remove a row...
widgets["remove"] = ttk.Button(
frame,
text="-",
width=2,
command=lambda row=row: self.remove_author(row),
takefocus=True,
)
if "name" not in widgets:
# the authors name
widgets["name"] = ttk.Entry(frame, width=50, takefocus=True)
widgets["name"].insert("end", name)
if "orcid" not in widgets:
# The author's ORCID id
widgets["orcid"] = ttk.Entry(frame, width=20, takefocus=True)
widgets["orcid"].insert("end", orcid)
if "affiliation" not in widgets:
# The author's affiliation
widgets["affiliation"] = ttk.Entry(frame, width=50, takefocus=True)
widgets["affiliation"].insert("end", affiliation)
widgets["remove"].grid(row=row, column=0, sticky=tk.W)
widgets["name"].grid(row=row, column=1, stick=tk.EW)
widgets["orcid"].grid(row=row, column=2, stick=tk.EW)
widgets["affiliation"].grid(row=row, column=3, stick=tk.EW)
row += 1
# The button to add a row...
if "add author" not in self:
w = self["add author"] = ttk.Button(
frame,
text="+",
width=5,
command=self.add_author,
takefocus=True,
)
w.focus_set()
else:
w = self["add author"]
w.lift()
w.grid(row=row, column=0, columnspan=3, sticky=tk.W)
frame.grid_columnconfigure(3, weight=1)
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def add_author(self):
"""Add a new row to the author table."""
self._author_data.append({"name": "", "orcid": "", "affiliation": ""})
self.layout_authors()
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def remove_author(self, row):
"""Remove a author entry from the table.
Parameters
----------
row : int
The row in the table to remove. Note the first author is at row 1.
"""
index = row - 1
data = self._author_data[index]
if "widgets" in data:
for w in data["widgets"].values():
w.destroy()
del self._author_data[index]
self.layout_authors()
