"""

Copyright (c) Contributors to the Open 3D Engine Project.

For complete copyright and license terms please see the LICENSE at the root of this distribution.

SPDX-License-Identifier: Apache-2.0 OR MIT

"""

import json

import os

# Class that describes a step in the tutorial

class TutorialStep:

def __init__(self, title, content, highlight_pattern=None, highlight_parent=None, highlight_index=0):

self.title = title

self.content = content

# The highlight pattern is a widget/item that will be highlighted

# for this particular step (can be None)

# This pattern will be passed to `pyside_utils`

# to find the widget/item. See its documentation for supported patterns

self.highlight_pattern = highlight_pattern

self.highlight_parent = highlight_parent

self.highlight_index = highlight_index

self.prev_step = None

self.next_step = None

# Method that will be called when the step starts

# A step class can override this method if they need

# to setup any special handling/listeners

def on_step_start(self):

pass

# Method that will be called after a step has ended

# A step class can override this method if they need

# to perform any cleanup or other tasks

def on_step_end(self):

pass

def get_title(self):

return self.title

def get_content(self):

return self.content

def get_highlight_pattern(self):

return self.highlight_pattern

def get_highlight_parent(self):

return self.highlight_parent

def get_highlight_index(self):

return self.highlight_index

# Top-level entry point for describing a tutorial which is made up of a series of steps

class Tutorial:

def __init__(self):

self.steps = []

self.title = ""

@classmethod

def create_from_json_file(cls, file_path):

# If the specified file path isn't an absolute path,

# try to resolve it locally

if not os.path.isabs(file_path):

local_dir = os.path.dirname(os.path.abspath(__file__))

file_path = os.path.join(local_dir, file_path)

# Read the json data in from the json file

f = open(file_path)

data = json.load(f)

# Create the new tutorial

new_tutorial = cls()

new_tutorial.title = data["title"]

# Add the tutorial steps

steps = data["steps"]

for step in steps:

title = step["title"]

content = step["content"]

highlight_pattern = step.get("highlight_pattern", None)

highlight_parent = step.get("highlight_parent", None)

highlight_index = step.get("highlight_index", None)

new_step = TutorialStep(title, content, highlight_pattern, highlight_parent, highlight_index)

new_tutorial.add_step(new_step)

return new_tutorial

# Method that will be called when the tutorial starts

# A tutorial class can override this method if they need

# to setup any special handling/listeners

def on_tutorial_start(self):

pass

# Method that will be called after a tutorial has ended

# A tutorial class can override this method if they need

# to perform any cleanup or other tasks

def on_tutorial_end(self):

pass

def get_title(self):

return self.title

def add_step(self, step):

# Set the step references for the current last step on the list

if self.steps:

last_step = self.steps[-1]

last_step.next_step = step

step.prev_step = last_step

self.steps.append(step)

def get_first_step(self):

if self.steps:

return self.steps[0]

return None

def get_steps(self):

return self.steps