add modal example

example/modal.py

@@ -0,0 +1,102 @@
+from __future__ import annotations
+
+from os import getenv
+
+from discord import Client, Embed, Intents, Interaction
+from discord.app_commands import CommandTree
+from discord.ext.flow import Button, Controller, Message, ModalConfig, ModelBase, Result, TextInput, send_modal
+
+
+class EmbedModel(ModelBase):
+    def __init__(self, title: str) -> None:
+        self.embed = Embed(title=title, description='')
+
+    def message(self) -> Message:
+        return Message(
+            embeds=[self.embed],
+            items=(
+                self.edit_title_button(),
+                self.edit_description_button(),
+                self.edit_title_and_description_button(),
+                self.finish_button(),
+            ),
+            edit_original=True,
+            disable_items=True,
+            ephemeral=True,
+        )
+
+    def edit_title_button(self) -> Button:
+        async def inner(interaction: Interaction[Client]) -> Result:
+            texts, interaction = await send_modal(
+                interaction,
+                ModalConfig(title='Edit Title'),
+                (TextInput(label='title', default=self.embed.title),),
+            )
+            assert len(texts) >= 1
+            self.embed.title = texts[0]
+            return Result.send_message(message=self.message(), interaction=interaction)
+
+        return Button(label='edit title', callback=inner)
+
+    def edit_description_button(self) -> Button:
+        async def inner(interaction: Interaction[Client]) -> Result:
+            texts, interaction = await send_modal(
+                interaction,
+                ModalConfig(title='Edit Description'),
+                (TextInput(label='description', default=self.embed.description),),
+            )
+            assert len(texts) >= 1
+            self.embed.description = texts[0]
+            return Result.send_message(message=self.message(), interaction=interaction)
+
+        return Button(label='edit description', callback=inner)
+
+    def edit_title_and_description_button(self) -> Button:
+        async def inner(interaction: Interaction[Client]) -> Result:
+            texts, interaction = await send_modal(
+                interaction,
+                ModalConfig(title='Edit Title and Description'),
+                (
+                    TextInput(label='title', default=self.embed.title),
+                    TextInput(label='description', default=self.embed.description),
+                ),
+            )
+            assert len(texts) >= 2
+            self.embed.title = texts[0]
+            self.embed.description = texts[1]
+            return Result.send_message(message=self.message(), interaction=interaction)
+
+        return Button(label='edit title and description', callback=inner)
+
+    def finish_button(self) -> Button:
+        async def inner(_: Interaction[Client]) -> Result:
+            return Result.send_message(message=Message(embeds=[self.embed]))
+
+        return Button(label='finish', callback=inner)
+
+
+class MyClient(Client):
+    def __init__(self) -> None:
+        super().__init__(intents=Intents.default())
+        self.tree = CommandTree(self)
+
+    async def setup_hook(self) -> None:
+        await self.tree.sync()
+
+
+client = MyClient()
+
+
+@client.event
+async def on_ready() -> None:
+    assert client.user is not None
+    print(f'Logged in as {client.user} (ID: {client.user.id})')
+    print('------')
+
+
+@client.tree.command(name='embed')
+async def embed(interaction: Interaction[Client], title: str) -> None:
+    await Controller(EmbedModel(title)).invoke(interaction)
+
+
+client.run(getenv('TOKEN', ''))