Add functionality to hide download button

app.py

@@ -30,6 +30,7 @@ app_dir = Path(__file__).parent
 
 protocol_url = 'https://pgomba.github.io/orchid_protocol/'
 discussion_url = 'https://huggingface.co/spaces/TZProject/TZSeedApp/discussions'
+acknowledgement_text = "The OrchAId TZ viability dataset used to develop the model was created by the Royal Botanic Gardens, Kew, Silo National des Graines Forestieres, Madagascar, the Ministry of Agriculture, Lands, Housing and Environment, Monsterrat, Instituto de Investigação Agrária de Moçambique, Mozambique, Departmento de Recursos Naturales y Ambientales, Puerto Rico & the National Parks Trust of the Virgin Islands."
 
 # Load the prediction model
 predictor = load_model()
@@ -45,7 +46,6 @@ main_app = ui.page_fluid(
                 ui.input_slider("threshold", "Threshold for Discarding Overlapping Segmentations"
                                              " (ADD a more descriptive label, and explain in text above).", 0, 1.0, 0.8),
 
-
                 ui.tags.style(""" 
                     .irs.irs--shiny .irs-single { /* square with number */
                         background-color: #357abd;
@@ -96,7 +96,7 @@ main_app = ui.page_fluid(
                               ),
                 ui.input_action_button("analyse", "Analyse", class_="btn-success"),
                 # ui.input_switch("mask", "Mask", False),
-                ui.column(4, ui.download_button("download", "Download Results", class_="btn-success")),
+                ui.output_ui("download_ui"),
                 width=300
 
             ),
@@ -123,7 +123,8 @@ app_ui = ui.page_fluid(
             "The protocol for taking images compatible with this model is available on ",
             ui.a("GitHub", href=protocol_url, target="_blank"),
             ". The protocol is available in English, Indonesian, Thai, French, Spanish, Portuguese, Arabic, Mandarin, Malagasy and Japanese.",
-            " If you have any feedback on the app, please start a discussion on ", ui.a("the HuggingFace space", href=discussion_url, target="_blank"),
+            " If you have any feedback on the app, please start a discussion on ",
+            ui.a("the HuggingFace space", href=discussion_url, target="_blank"),
             ". Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed euismod, nunc ut laoreet placerat, urna purus rhoncus nisi, "
             "vel facilisis magna sem sed tellus."
         ),
@@ -136,6 +137,12 @@ app_ui = ui.page_fluid(
     #     title="App with navbar",
     #     id="page",
     # ),
+    ui.div(
+        ui.p(
+            acknowledgement_text
+        ),
+        class_="acknowledgement-bar"
+    ),
     ui.div(
         ui.layout_column_wrap(
             ui.output_image("rbg_kew", height='100%', fill=True),
@@ -216,12 +223,15 @@ def server(input, output, session: Session):
         return img
 
     analysis_results = reactive.Value([])
+    is_analyzing = reactive.Value(False)  # Track if analysis is in progress
 
     @reactive.Effect
     @reactive.event(input.analyse)
     async def process_images():
+        is_analyzing.set(True)  # Set analyzing flag to True
         files = input.upload()
         if not files:
+            is_analyzing.set(False)  # Reset flag if no files
             return
 
         results = []
@@ -259,6 +269,7 @@ def server(input, output, session: Session):
 
         # Update reactive value
         analysis_results.set(results)
+        is_analyzing.set(False)  # Set analyzing flag to False when done
 
     @output
     @render.ui
@@ -267,6 +278,9 @@ def server(input, output, session: Session):
         if not results:
             return ui.div("No results yet. Upload images and click 'Analyse'.",
                           class_="text-muted")
+        if is_analyzing.get():
+            return ui.div("Analyzing...",
+                          class_="text-muted")
 
         ui_output = []
         for idx, r in enumerate(results):
@@ -292,6 +306,11 @@ def server(input, output, session: Session):
 
         return ui.div(ui_output)
 
+    @render.ui
+    def download_ui():
+        if analysis_results.get() and not is_analyzing.get():
+            return ui.column(4, ui.download_button("download", "Download Results", class_="btn-success"))
+
     @render.download()
     def download():
         results = analysis_results.get()