Add disabled to st.select_slider

e2e/scripts/st_select_slider.py

@@ -49,17 +49,25 @@
 )
 st.write("Value 4:", w4)
 
+w5 = st.select_slider(
+    "Label 5",
+    value=("orange", "blue"),
+    options=["red", "orange", "yellow", "green", "blue", "indigo", "violet"],
+    disabled=True,
+)
+st.write("Value 5:", w5)
+
 
 if st._is_running_with_streamlit:
 
     def on_change():
         st.session_state.select_slider_changed = True
 
     st.select_slider(
-        "Label 5",
+        "Label 6",
         options=np.array([1, 2, 3, 4, 5]),
-        key="select_slider5",
+        key="select_slider6",
         on_change=on_change,
     )
-    st.write("Value 5:", st.session_state.select_slider5)
+    st.write("Value 6:", st.session_state.select_slider6)
     st.write("Select slider changed:", "select_slider_changed" in st.session_state)

e2e/specs/st_select_slider.spec.js

@@ -21,7 +21,13 @@ describe("st.select_slider", () => {
   });
 
   it("displays correct number of elements", () => {
-    cy.get(".element-container .stSlider").should("have.length", 5);
+    cy.get(".element-container .stSlider").should("have.length", 6);
+  });
+
+  it("looks right when disabled", () => {
+    cy.getIndexed(".stSlider", 4).matchThemedSnapshots(
+      "disabled-select-slider"
+    );
   });
 
   it("shows labels", () => {
@@ -34,6 +40,8 @@ describe("st.select_slider", () => {
     cy.getIndexed(".stSlider label", 3).should("have.text", "Label 4");
 
     cy.getIndexed(".stSlider label", 4).should("have.text", "Label 5");
+
+    cy.getIndexed(".stSlider label", 5).should("have.text", "Label 6");
   });
 
   it("has correct values", () => {
@@ -48,9 +56,14 @@ describe("st.select_slider", () => {
 
     cy.getIndexed(".stMarkdown", 3).should("have.text", "Value 4: 5");
 
-    cy.getIndexed(".stMarkdown", 4).should("have.text", "Value 5: 1");
+    cy.getIndexed(".stMarkdown", 4).should(
+      "have.text",
+      "Value 5: ('orange', 'blue')"
+    );
+
+    cy.getIndexed(".stMarkdown", 5).should("have.text", "Value 6: 1");
 
-    cy.getIndexed(".stMarkdown", 5).should(
+    cy.getIndexed(".stMarkdown", 6).should(
       "have.text",
       "Select slider changed: False"
     );
@@ -135,14 +148,14 @@ describe("st.select_slider", () => {
 
   it("calls callback if one is registered", () => {
     // This selects the slider ends, so range sliders have two, and this is the
-    // seventh element in the list.
-    cy.getIndexed('.stSlider [role="slider"]', 6)
+    // ninth element in the list.
+    cy.getIndexed('.stSlider [role="slider"]', 8)
       .click()
       .type("{rightarrow}", { force: true });
 
     cy.get(".stMarkdown").should(
       "contain.text",
-      "Value 5: 2" + "Select slider changed: True"
+      "Value 6: 2" + "Select slider changed: True"
     );
   });
 });

lib/streamlit/elements/select_slider.py

@@ -43,6 +43,8 @@ def select_slider(
         on_change: Optional[WidgetCallback] = None,
         args: Optional[WidgetArgs] = None,
         kwargs: Optional[WidgetKwargs] = None,
+        *,  # keyword-only arguments:
+        disabled: bool = False,
     ) -> Any:
         """
         Display a slider widget to select items from a list.
@@ -86,6 +88,9 @@ def select_slider(
             An optional tuple of args to pass to the callback.
         kwargs : dict
             An optional dict of kwargs to pass to the callback.
+        disabled : bool
+            An optional boolean, which disables the select slider if set to True.
+            The default is False. This argument can only be supplied by keyword.
 
         Returns
         -------
@@ -119,6 +124,7 @@ def select_slider(
             on_change=on_change,
             args=args,
             kwargs=kwargs,
+            disabled=disabled,
             ctx=ctx,
         )
 
@@ -133,6 +139,7 @@ def _select_slider(
         on_change: Optional[WidgetCallback] = None,
         args: Optional[WidgetArgs] = None,
         kwargs: Optional[WidgetKwargs] = None,
+        disabled: bool = False,
         ctx: Optional[ScriptRunContext] = None,
     ) -> Any:
         key = to_key(key)
@@ -177,6 +184,7 @@ def as_index_list(v):
         slider_proto.data_type = SliderProto.INT
         slider_proto.options[:] = [str(format_func(option)) for option in opt]
         slider_proto.form_id = current_form_id(self.dg)
+        slider_proto.disabled = disabled
         if help is not None:
             slider_proto.help = dedent(help)
 

lib/tests/streamlit/select_slider_test.py

@@ -40,6 +40,15 @@ def test_no_value(self):
         self.assertEqual(c.max, 2)
         self.assertEqual(c.step, 1)
 
+    def test_just_disabled(self):
+        """Test that it can be called with disabled param."""
+        st.select_slider(
+            "the label", options=["red", "orange", "yellow"], disabled=True
+        )
+
+        c = self.get_delta_from_queue().new_element.slider
+        self.assertEqual(c.disabled, True)
+
     @parameterized.expand(
         [
             (5, [1, 2, 3, 4, 5], [4]),  # list