262 lines
9.4 KiB
Python
262 lines
9.4 KiB
Python
#!/usr/bin/python3
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import tkinter as tk
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from tkinter import ttk
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import sys, os, json, traceback
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################################################################################
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# DEFINITIONS
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################################################################################
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EXIT_SUCCESS=0
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EXIT_ERROR=1
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default_configuration = {
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"window geometry": "640x480"
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}
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# empty configuration by default because new values will be added while trying to load them
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# this allows the IDE to load old configuration files with missing keys
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configuration = {}
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home_directory = os.path.expanduser("~")
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config_file_path = os.path.join(home_directory, "some_ide_config.json")
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def info(message):
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# print info to sys.stderr because it isn’t really output, just debug information
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print("INFO: "+str(message), file=sys.stderr)
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traceback.print_stack()
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def warn(message, is_exception=False):
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print("WARNING: "+str(message), file=sys.stderr)
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if is_exception:
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traceback.print_exc()
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else:
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traceback.print_stack()
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def error(message, is_exception=True, handle_gracefully=True):
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print("ERROR: "+str(message), file=sys.stderr)
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if is_exception:
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traceback.print_exc()
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else:
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traceback.print_stack()
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if handle_gracefully:
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pass
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else:
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sys.exit(EXIT_ERROR)
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def get_configuration_value(key):
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if key in configuration:
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pass
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else:
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info("Requested configuration value for "+str(key)+" not in configuration. Loading from default configuration.")
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try:
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configuration[key] = default_configuration[key]
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except KeyError:
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error("Requested an invalid configuration key.")
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return None
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return configuration[key]
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def set_configuration_value(key, value, save_to_disk=True):
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if not key in configuration:
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info("Writing configuration for previously unknown key "+str(key)+".")
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configuration[key]=value
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try:
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config_file = open(config_file_path, "w")
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config_file.write(json.dumps(configuration))
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config_file.close()
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except:
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warn("Failed to save config file.", is_exception=True)
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dialog = tk.Tk()
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dialog.title("Failed to save config file")
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ttk.Label(dialog, text="Failed to save the configuration file.").pack()
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ttk.Button(dialog, text="Continue", command=dialog.destroy).pack()
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dialog.resizable(0,0)
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dialog.mainloop()
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# easy way to get data out of window events
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class Window_Interaction_Handler:
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# constructor
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def __init__(self):
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self.__window_interactions = {}
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# add a result for an interaction event, saves results in reverse order by default, can optionally call another function
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def interact(self, name, result, reverse_order=True, additional_action=None, additional_action_parameters=()):
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if name in self.__window_interactions:
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if reverse_order:
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self.__window_interactions[name] = [result] + self.__window_interactions[name]
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else:
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self.__window_interactions[name] = self.__window_interactions[name] + [result]
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else:
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self.__window_interactions[name] = [result]
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if not additional_action==None:
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additional_action(*additional_action_parameters)
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# get first result for a given event from the list of results (newest (default) or oldest), removes the returned result from the list by default
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def get_result(self, name, remove=True):
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if name in self.__window_interactions and len(self.__window_interactions[name])>0:
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if remove:
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result = self.__window_interactions[name].pop(0)
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if len(self.__window_interactions[name])==0:
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del self.__window_interactions[name]
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return result
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else:
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return self.__window_interactions[name][0]
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else:
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return None
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# get all results for a given event
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def get_results(self, name, clear=False):
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if name in self.__window_interactions and len(self.__window_interactions[name])>0:
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results = self.__window_interactions[name]
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if clear:
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del self.__window_interactions[name]
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return results
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# clear results for a given event
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def clear(self, name):
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if name in self.__window_interactions:
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del self.__window_interactions[name]
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# destructor
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def __del__(self):
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if len(self.__window_interactions)>0:
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warn("__window_interactions not empty upon destruction of Window_Interaction_Handler:\n"+str(self.__window_interactions))
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################################################################################
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# PROGRAM STARTUP
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################################################################################
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# read configuration
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if os.path.isfile(config_file_path):
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try:
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config_file = open(config_file_path, "r")
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configuration = json.loads(config_file.read())
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config_file.close()
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except Exception:
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error("An exception occurred while trying to load the configuration.", handle_gracefully=False)
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else:
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# config not found
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dialog_interaction_handler = Window_Interaction_Handler()
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dialog = tk.Tk()
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dialog.title("No configuration found")
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ttk.Label(dialog, text="No configuration found!").pack()
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buttons_frame = tk.Frame(dialog)
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buttons_frame.pack()
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ttk.Button(buttons_frame, text="Create", command=lambda: dialog_interaction_handler.interact("create", True, additional_action=dialog.destroy)).grid(column=0, row=0)
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ttk.Button(buttons_frame, text="Quit", command=lambda: dialog_interaction_handler.interact("create", False, additional_action=dialog.destroy)).grid(column=1, row=0)
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dialog.resizable(0,0)
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dialog.mainloop()
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if dialog_interaction_handler.get_result("create"):
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try:
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config_file = open(config_file_path, "w")
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config_file.write(json.dumps(default_configuration))
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config_file.close()
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except:
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warn("Failed to save initial config file.", is_exception=True)
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dialog = tk.Tk()
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dialog.title("Failed to save initial config file")
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ttk.Label(dialog, text="Failed to save the initial config file.\n" +
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"The IDE can still start up, but it is likely that all changes to the configuration will be lost where they would be saved otherwise.").pack()
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ttk.Button(dialog, text="Continue", command=dialog.destroy).pack()
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dialog.resizable(0,0)
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dialog.mainloop()
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else:
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error("No config present and user chose not to create one. Exiting.", is_exception=False, handle_gracefully=True)
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# exit with success exit code anyway because this is not a program failure
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sys.exit(EXIT_SUCCESS)
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################################################################################
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# PROGRAM MAIN WINDOW
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################################################################################
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main_window = tk.Tk()
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main_window.title("IDE")
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main_window.geometry(get_configuration_value("window geometry"))
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def not_implemented():
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warn("Not implemented!")
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# format:
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# "":{} -> menu or submenu
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# "":function -> menu entry
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# "":None -> disabled menu entry
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# None:None -> separator
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#
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# Entries with ... at the end are supposed to open dialogs whereas entries without dots are supposed to take effect immediately
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menu_structure = {
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"IDE": {
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"Preferences...": not_implemented,
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"Quit": not_implemented
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},
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"Project": {
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"New": {
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"No known project types": None
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},
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"Open...": not_implemented,
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"Close": {
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"No open projects": None
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},
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None: None,
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"Preferences...": not_implemented,
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"Search...": not_implemented,
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"Build": not_implemented
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},
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"File": {
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"New...": not_implemented,
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"Open...": not_implemented,
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"Save": not_implemented,
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"Close": not_implemented,
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None: None,
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"Rename...": not_implemented,
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"Move...": not_implemented,
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"View in File Explorer...": not_implemented
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},
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"Edit": {
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"Cut": not_implemented,
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"Copy": not_implemented,
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"Paste": not_implemented,
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None: None,
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"Search and Replace...": not_implemented,
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None: None,
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"Format": not_implemented,
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"Indent": not_implemented,
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"Unindent": not_implemented,
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"Toggle Comment": not_implemented
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},
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"View": {
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"Zoom in": not_implemented,
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"Zoom out": not_implemented,
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"Normal Size": not_implemented
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},
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"Help": {
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"Manual...": not_implemented,
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"About IDE...": not_implemented,
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}
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}
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menubar = None
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def build_menu(structure_dict, menu):
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for entry in structure_dict:
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if structure_dict[entry]==None:
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if entry==None:
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menu.add_separator()
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else:
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menu.add_command(label=entry)
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menu.entryconfig(entry, state="disabled")
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if isinstance(structure_dict[entry], dict):
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submenu = tk.Menu(menu, tearoff=False)
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build_menu(structure_dict[entry], submenu)
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menu.add_cascade(label=entry, menu=submenu)
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if callable(structure_dict[entry]):
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menu.add_command(label=entry, command=structure_dict[entry])
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def rebuild_menu():
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menubar = tk.Menu(main_window)
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build_menu(menu_structure, menubar)
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main_window.config(menu=menubar)
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rebuild_menu()
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main_window.mainloop()
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