Add spinner during computation

app.py

@@ -66,28 +66,28 @@ def main() -> None:
     st.write('<style>div.row-widget.stRadio > div{flex-direction:row;}</style>', unsafe_allow_html=True)
     st.header("Input")
 
-    with st.form(key='terms-and-conditions'):
-        sentences_length_input = st.number_input(
-            label='Number of sentences to be extracted:',
-            min_value=1,
-            value=st.session_state.sentences_length
-        )
-        tc_text_input = st.text_area(
-            value=st.session_state.tc_text,
-            label='Terms & conditions content or specify an URL:',
-            height=240
-        )
-
-        submit_button = st.form_submit_button(label='Summarize')
-
-    if submit_button:
-
-        if is_valid_url(tc_text_input):
-            extract_summary_sentences = summarizer.extractive_summary_from_url(tc_text_input, sentences_length_input)
-        else:
-            extract_summary_sentences = summarizer.extractive_summary_from_text(tc_text_input, sentences_length_input)
-
-        abstract_summary_list = summarizer.abstractive_summary(extract_summary_sentences)
+    sentences_length_input = st.number_input(
+        label='Number of sentences to be extracted:',
+        min_value=1,
+        value=st.session_state.sentences_length
+    )
+    tc_text_input = st.text_area(
+        value=st.session_state.tc_text,
+        label='Terms & conditions content or specify an URL:',
+        height=240
+    )
+
+    summarize_button = st.button(label='Summarize')
+
+    if summarize_button:
+
+        with st.spinner('Summarizing the text...'):
+            if is_valid_url(tc_text_input):
+                extract_summary_sentences = summarizer.extractive_summary_from_url(tc_text_input, sentences_length_input)
+            else:
+                extract_summary_sentences = summarizer.extractive_summary_from_text(tc_text_input, sentences_length_input)
+
+            abstract_summary_list = summarizer.abstractive_summary(extract_summary_sentences)
 
         display_abstractive_summary(abstract_summary_list)
         display_extractive_summary(tc_text_input, extract_summary_sentences)