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How to make your own widget
Guide explains how to create and add your own widget to Supervisely SDK
In this tutorial you will learn how to create your own widget, add it to Supervisely SDK and make small demo.
- 1.Clone SKD repo:git clone https://github.com/supervisely/supervisely
- 2.Clone repo with widgets samples:git clone https://github.com/supervisely-ecosystem/ui-widgets-demos
- 3.Create SDK folder symlink in ui-widgets-demosln -s ./supervisely/supervisely ./ui-widgets-demos/supervisely
- 4.Create folder in
supervisely/app/widgets/<your_widget_folder>
like thatyour_widget_folder|____ __init__.py|____ template.html|____ script.js # optional: you can add javascript file|____ your_widget.py - 5.Declare a new class with inheritance from Widget in
your_widget.py
from supervisely.app.widgets import Widgetfrom supervisely.app.content import StateJson, DataJsonclass YourWidget(Widget):# ------ Required methods ------def __init__(self,data_1: listdata_2: dict):self._data_1 = data_1self._data_2 = data_2self._some_state_attribute_1 = Trueself._some_state_attribute_2 = 42super(YourWidget, self).__init__(widget_id=widget_id, file_path=__file__)# ------ Optional | Add your javascript file ------# script_path = "./sly/css/app/widgets/your_widget_folder/script.js" # change <your_widget_folder># JinjaWidgets().context["__widget_scripts__"][self.__class__.__name__] = script_pathdef get_json_data(self):""" This method will be used in template.html to get widget data """return {"data_1": self._data_1,"data_2": self._data_2,}def get_json_state(self):""" This method will be used in template.html to get widget state """return {"some_state_attribute_1": self._some_state_attribute_1,"some_state_attribute_2": self._some_state_attribute_2,}# ------ Optional methods | Just for example ------def your_method_for_change_data(self):# make changes in widget dataself._data_1 = self._data_1 + [1, 2, 3, 4, 5]self._data_2 = {'a': 11}# save this changes of widget data in local storage(RAM)DataJson()[self.widget_id]['data_1'] = self._data_1DataJson()[self.widget_id]['data_2'] = self._data_2# sync this changes to remote serverDataJson().send_changes()def your_method_for_change_state(self):# change state attributeself._some_state_attribute_1 = Falseself._some_state_attribute_2 = 0.1# save this changes of widget data in local storage(RAM)StateJson()[self.widget_id]["some_state_attribute_1"] = self._some_state_attribute_1StateJson()[self.widget_id]["some_state_attribute_2"] = self._some_state_attribute_2# sync this changes to remote serverStateJson().send_changes() - 6.Construct
template.html
for your widget using other widgets from SDK or any HTML elements<div><!-- Elements from SDK had the "sly" prefix --><sly-field :title="data.{{{widget.widget_id}}}.data_1" :description="state.{{{widget.widget_id}}}.some_state_attribute_1"><div>{{data.{{{widget.widget_id}}}.data_2}}</div><div>{{state.{{{widget.widget_id}}}.some_state_attribute_2}}</div></sly-field><!-- Just simple HTML element with Javascript function from your scipt.js --><button:value="data.{{{widget.widget_id}}}.data_1"@click="myFunction()"></button><!-- Also simple HTML element, but from UI library of HTML elements - https://element.eleme.io --><el-button :value="data.{{{widget.widget_id}}}.data_1"></el-button><div> - 7.(Optional) Prepare file
script.js
for your widget if you need to implement your own Vue JS component. 📗 See this example for more details.const myFunction = function (name) {console.log('Hello world')} - 8.Import new widget as part of
widgets
module. Just add import insupervisely/app/widgets/__init__.py
# imports for other widgets as examplefrom supervisely.app.widgets.radio_tabs.radio_tabs import RadioTabsfrom supervisely.app.widgets.train_val_splits.train_val_splits import TrainValSplitsfrom supervisely.app.widgets.editor.editor import Editor# import for your widgetfrom supervisely.app.widgets.your_widget_folder.your_widget_py_file import YourWidgetClass - 9.Create folder with example of your widget in
ui-widgets-demos/NEW widgets/<your_widget_example_folder>
like thatyour_widget_folder|____src|____main.pyExample ofmain.py
import osimport supervisely as slyfrom dotenv import load_dotenvfrom supervisely.app.widgets import (Card,YourWidget # <-- import your widget)load_dotenv("local.env")load_dotenv(os.path.expanduser("~/supervisely.env"))api = sly.Api()your_widget = YourWidget(data_1=[...], data_2={'c': 0.3355})card = Card(title="My card", content=your_widget)app = sly.Application(layout=card) - 10.To see the demo of your widget, you need to run the server. You got 2 options for that:a) Just run the server from command line
python -m uvicorn "NEW widgets.grid_plot.src.main:app" --host 0.0.0.0 --port 8000 --ws websockets --reload
b) If you are VSCode user, then just editui-widgets-demos/.vscode/launch.json
as showed below and run the server from "run & debug" menu{"version": "0.2.0","configurations": [{"name": "Uvicorn","type": "python","request": "launch","module": "uvicorn","args": [<!-- change "your_widget_example_folder" to the name of the folder with your widget -->"NEW widgets.your_widget_example_folder.src.main:app","--host","0.0.0.0","--port","8000","--ws","websockets","--reload"],"jinja": true,"justMyCode": true,"env": {"PYTHONPATH": "${workspaceFolder}:${PYTHONPATH}","LOG_LEVEL": "DEBUG",}}]} - 11.After all steps, test your widget in browser http://0.0.0.0:8000 and if it ok make a commit & push & create the pull request in both repo(SDK and ui-widget-demos).Send the link to pull-request to Maxim Kolomeychenko(@Max) in Slack. He will run a new SDK build.Success!
supervisely/app/widgets/textarea/textarea.py
from supervisely.app import DataJson, StateJson
from supervisely.app.widgets import Widget
class TextArea(Widget):
def __init__(
self,
value: str = None,
placeholder: str = "Please input",
rows: int = 2,
autosize: bool = True,
readonly: bool = False,
widget_id=None,
):
self._value = value
self._placeholder = placeholder
self._rows = rows
self._autosize = autosize
self._readonly = readonly
super().__init__(widget_id=widget_id, file_path=__file__)
def get_json_data(self):
return {
"value": self._value,
"placeholder": self._placeholder,
"rows": self._rows,
"autosize": self._autosize,
"readonly": self._readonly,
}
def get_json_state(self):
return {"value": self._value}
def set_value(self, value):
self._value = value
StateJson()[self.widget_id]["value"] = value
StateJson().send_changes()
def get_value(self):
return StateJson()[self.widget_id]["value"]
def is_readonly(self):
return DataJson()[self.widget_id]["readonly"]
def enable_readonly(self):
self._readonly = True
DataJson()[self.widget_id]["readonly"] = True
DataJson().send_changes()
def disable_readonly(self):
self._readonly = False
DataJson()[self.widget_id]["readonly"] = False
DataJson().send_changes()
supervisely/app/widgets/textarea/template.html
<el-input
type="textarea"
:placeholder="data.{{{widget.widget_id}}}.placeholder"
:rows="data.{{{widget.widget_id}}}.rows"
:autosize="data.{{{widget.widget_id}}}.autosize"
v-model="data.{{{widget.widget_id}}}.value">
</el-input>
supervisely/app/widgets/__init__.py
from supervisely.app.widgets.textarea.textarea import TextArea
NEW widgets/textarea/src/main.py
import supervisely as sly
from dotenv import load_dotenv
from supervisely.app.widgets import Card, TextArea
load_dotenv("local.env")
load_dotenv(os.path.expanduser("~/supervisely.env"))
api = sly.Api()
text_area = TextArea(value="Some text in the text area.", autosize=False)
card = Card(title="My card", content=text_area)
app = sly.Application(layout=card)
Last modified 10mo ago