Merge pull request #39 from kkinder/add-typeahead-example

Add experimental typeahead example
kkinder · Aug 3, 2024 · d048cc8 · d048cc8
2 parents d13b7c4 + 32c492e
commit d048cc8
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diff --git a/examples/index.html b/examples/index.html
@@ -31,6 +31,7 @@ <h1>Integrations</h1>
   <li><a href="integrations/11_micropython_datetimes/index.html">Datetimes in MicroPython</a></li>
   <li><a href="integrations/12_ltk/index.html">Using LTK and PuePy</a></li>
   <li><a href="integrations/13_jinja/index.html">Using Jinja2 and PuePy</a></li>
+  <li><a href="integrations/14_shoelace_autocomplete/index.html">Auto-Complete with Shoelace.style</a></li>
 </ul>
 </body>
 </html>
diff --git a/examples/integrations/14_shoelace_autocomplete/index.html b/examples/integrations/14_shoelace_autocomplete/index.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <title>PuePy Type Ahead</title>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width,initial-scale=1.0">
+  <link rel="stylesheet" href="https://pyscript.net/releases/2024.8.1/core.css">
+  <script type="module" src="https://pyscript.net/releases/2024.8.1/core.js"></script>
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@shoelace-style/shoelace@2.15.1/cdn/themes/light.css"/>
+  <script type="module"
+          src="https://cdn.jsdelivr.net/npm/@shoelace-style/shoelace@2.15.1/cdn/shoelace-autoloader.js"></script>
+
+</head>
+<body>
+<div id="app">Loading...</div>
+<script type="mpy" src="./typeahead.py" config="../../pyscript.json"></script>
+</body>
+</html>
diff --git a/examples/integrations/14_shoelace_autocomplete/typeahead.py b/examples/integrations/14_shoelace_autocomplete/typeahead.py
@@ -0,0 +1,89 @@
+from puepy import Component, Page, Application, t
+from puepy.runtime import next_tick
+
+app = Application()
+
+
+@t.component()
+class TypeAhead(Component):
+    props = ["choices", "value", "placeholder"]
+
+    def initial(self):
+        return dict(
+            input_value=self.value or "",
+        )
+
+    def populate(self):
+        with t.sl_popup(ref="popup", placement="bottom", on_focusout=self.on_focusout, sync="width"):
+            t.sl_input(
+                slot="anchor",
+                bind="input_value",
+                placeholder=self.placeholder or "",
+                on_sl_focus=self.on_focus,
+                ref="input",
+                autocomplete="off",
+                clearable=True,
+            )
+            with t.sl_menu(on_sl_select=self.on_menu_select):
+                for choice in self.get_available_choices():
+                    t.sl_menu_item(choice, value=choice)
+
+    def on_focusout(self, event):
+        if not self.refs["popup"].element.contains(event.relatedTarget):
+            self.close_popup()
+
+    def on_focus(self, event):
+        self.open_popup()
+
+    def on_clear(self, event):
+        self.state["input_value"] = ""
+        self.send_bind_event()
+
+    def on_menu_select(self, event):
+        self.state["input_value"] = event.detail.item.value
+        self.send_bind_event()
+        next_tick(self.close_popup)
+
+    def close_popup(self):
+        self.refs["popup"].element.active = False
+
+    def open_popup(self):
+        self.refs["popup"].element.active = True
+
+    def send_bind_event(self):
+        if self.bind:
+            self.origin.state[self.bind] = self.state["input_value"]
+
+    def get_available_choices(self):
+        input_value = self.state["input_value"]
+        if input_value:
+            return [item for item in self.choices if input_value in item]
+        else:
+            return self.choices
+
+
+@app.page()
+class TypeAheadPage(Page):
+    def initial(self):
+        return {"cheese": None}
+
+    def populate(self):
+        t.h1("Typeahead/autocomplete demo")
+        t.type_ahead(
+            ref="select_cheese",
+            bind="cheese",
+            placeholder="What is your favorite type of cheese?",
+            choices=[
+                "cheddar cheese",
+                "gouda",
+                "brie",
+                "swiss",
+                "gorgonzola",
+                "feta",
+                "mozzarella",
+            ],
+        )
+        t.p(f"You selected: {self.state['cheese'] or 'nothing yet'}")
+
+
+app.mount("#app")