Create use_table_listener hook
#96
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jnumainville
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Nov 30, 2023
Fixes #96 Adds a hook that uses a table listener Here's an example that will monitor added or removed rows in the most recent update, depending on if the appropriate checkboxes are checked ``` import deephaven.ui as ui from deephaven.table import Table from deephaven import time_table, empty_table, merge from deephaven.table_listener import listen from deephaven import pandas as dhpd import pandas as pd def to_table(update): return dhpd.to_table(pd.DataFrame.from_dict(update)) def add_as_op(ls, t, op): t = t.update(f"type=`{op}`") ls.append(t) @ui.component def monitor_changed_data(source: Table): changed, set_changed = ui.use_state(empty_table(0)) show_added, set_show_added = ui.use_state(True) show_removed, set_show_removed = ui.use_state(True) def listener(update, is_replay): to_merge = [] if (added_dict := update.added()) and show_added: added = to_table(added_dict) add_as_op(to_merge, added, "added") if (removed_dict := update.removed()) and show_removed: removed = to_table(removed_dict) add_as_op(to_merge, removed, "removed") if to_merge: set_changed(merge(to_merge)) else: set_changed(empty_table(0)) ui.use_table_listener(source, listener) added_check = ui.checkbox("Show Added", isSelected=show_added, on_change=set_show_added) removed_check = ui.checkbox("Show Removed", isSelected=show_removed, on_change=set_show_removed) return [added_check, removed_check, changed] t = time_table("PT1S").update(formulas=["X=i"]).tail(5) monitor = monitor_changed_data(t) ```
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Create a hook in python
use_table_listenerthat the user can use to listen to a table.The text was updated successfully, but these errors were encountered: