feat: Emit event on table group open/collapse #2133 (#2402)

py/examples/table_events_group.py

@@ -0,0 +1,57 @@
+# Table / Events / Group
+# Register the `group_change` #event to emit Wave event when group collapses or opens.
+# #table #events #groups
+# ---
+from h2o_wave import main, app, Q, ui
+
+bobrows = [
+    {"name":"row1", "cell":"Issue1"},
+    {"name":"row2", "cell":"Issue2"},
+]
+johnrows = [
+    {"name":"row3", "cell":"Issue3"},
+    {"name":"row4", "cell":"Issue4"},
+    {"name":"row5", "cell":"Issue5"},
+]
+
+collapsed_states = {
+    'Bob': True,
+    'John': False
+}
+
+@app('/demo')
+async def serve(q: Q):
+    if q.events.issues_table and q.events.issues_table.group_change:
+        # toggle the collapse states
+        for group in q.events.issues_table.group_change:
+             collapsed_states[group] = not collapsed_states[group]
+        q.page['collapse'].content = f'{q.events.issues_table.group_change}'
+    else: 
+        q.page['form'] = ui.form_card(box='1 1 4 5', items=[
+            ui.table(
+                name='issues_table',
+                columns=[ui.table_column(name='text', label='Issues assigned to')],
+                groups=[
+                    ui.table_group("Bob", 
+                                rows=[ui.table_row(
+                                        name=row["name"],
+                                        cells=[row["cell"]])
+                                    for row in bobrows],
+                                    collapsed=collapsed_states["Bob"]                                
+                    ),
+                    ui.table_group("John", 
+                                rows=[ui.table_row(
+                                        name=row["name"],
+                                        cells=[row["cell"]])
+                                    for row in johnrows],
+                                    collapsed=collapsed_states["John"]                                
+                    ),],
+                height='400px',
+                events=['group_change']
+            )
+        ])
+        q.page['collapse'] = ui.markdown_card(box='5 1 2 1', title='Group change info', content='')
+
+        q.client.initialized = True
+
+    await q.page.save()

py/examples/tour.conf

@@ -93,6 +93,7 @@ table_filter_backend.py
 table_download.py
 table_groupby.py
 table_groups.py
+table_events_group.py
 table_select_single.py
 table_select_multiple.py
 table_events_select.py

py/h2o_lightwave/h2o_lightwave/types.py

@@ -3922,7 +3922,7 @@ def __init__(
         self.pagination = pagination
         """Display a pagination control at the bottom of the table. Set this value using `ui.table_pagination()`."""
         self.events = events
-        """The events to capture on this table when pagination is set. One of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset' | 'select'."""
+        """The events to capture on this table. When pagination is set, one of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset'. These events are available regardless of pagination: 'select' | 'group_change'."""
         self.single = single
         """True to allow only one row to be selected at time. Mutually exclusive with `multiple` attr."""
         self.value = value

py/h2o_lightwave/h2o_lightwave/ui.py

@@ -1478,7 +1478,7 @@ def table(
         tooltip: An optional tooltip message displayed when a user clicks the help icon to the right of the component.
         groups: Creates collapsible / expandable groups of data rows. Mutually exclusive with `rows` attr.
         pagination: Display a pagination control at the bottom of the table. Set this value using `ui.table_pagination()`.
-        events: The events to capture on this table when pagination is set. One of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset' | 'select'.
+        events: The events to capture on this table. When pagination is set, one of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset'. These events are available regardless of pagination: 'select' | 'group_change'.
         single: True to allow only one row to be selected at time. Mutually exclusive with `multiple` attr.
         value: The name of the selected row. If this parameter is set, single selection will be allowed (`single` is assumed to be `True`).
     Returns:

py/h2o_wave/h2o_wave/types.py

@@ -3922,7 +3922,7 @@ def __init__(
         self.pagination = pagination
         """Display a pagination control at the bottom of the table. Set this value using `ui.table_pagination()`."""
         self.events = events
-        """The events to capture on this table when pagination is set. One of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset' | 'select'."""
+        """The events to capture on this table. When pagination is set, one of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset'. These events are available regardless of pagination: 'select' | 'group_change'."""
         self.single = single
         """True to allow only one row to be selected at time. Mutually exclusive with `multiple` attr."""
         self.value = value

py/h2o_wave/h2o_wave/ui.py

@@ -1478,7 +1478,7 @@ def table(
         tooltip: An optional tooltip message displayed when a user clicks the help icon to the right of the component.
         groups: Creates collapsible / expandable groups of data rows. Mutually exclusive with `rows` attr.
         pagination: Display a pagination control at the bottom of the table. Set this value using `ui.table_pagination()`.
-        events: The events to capture on this table when pagination is set. One of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset' | 'select'.
+        events: The events to capture on this table. When pagination is set, one of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset'. These events are available regardless of pagination: 'select' | 'group_change'.
         single: True to allow only one row to be selected at time. Mutually exclusive with `multiple` attr.
         value: The name of the selected row. If this parameter is set, single selection will be allowed (`single` is assumed to be `True`).
     Returns:

r/R/ui.R

@@ -1703,7 +1703,7 @@ ui_table_pagination <- function(
 #' @param tooltip An optional tooltip message displayed when a user clicks the help icon to the right of the component.
 #' @param groups Creates collapsible / expandable groups of data rows. Mutually exclusive with `rows` attr.
 #' @param pagination Display a pagination control at the bottom of the table. Set this value using `ui.table_pagination()`.
-#' @param events The events to capture on this table when pagination is set. One of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset' | 'select'.
+#' @param events The events to capture on this table. When pagination is set, one of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset'. These events are available regardless of pagination: 'select' | 'group_change'.
 #' @param single True to allow only one row to be selected at time. Mutually exclusive with `multiple` attr.
 #' @param value The name of the selected row. If this parameter is set, single selection will be allowed (`single` is assumed to be `True`).
 #' @return A Table instance.

ui/src/table.test.tsx

@@ -1676,6 +1676,58 @@ describe('Table.tsx', () => {
       expect(container.querySelectorAll('.ms-GroupHeader-title')[0]).toHaveTextContent('1/20/1970, 4:58:47 AM(0)')
       expect(container.querySelectorAll('.ms-GroupHeader-title')[1]).toHaveTextContent('6/22/2022, 8:47:51 PM(1)')
     })
+
+    it('Collapses all group by list - fire event', () => {
+      const { container, getAllByText, getByTestId } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      fireEvent.click(getByTestId('groupby'))
+      fireEvent.click(getAllByText('Col1')[1]!)
+
+      //open all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      emitMock.mockClear()
+
+      //collapse all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', [cell21, cell11, cell31])      
+    })
+
+    it('Expands all group by list - fire event', () => {
+      const { container, getAllByText, getByTestId } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      fireEvent.click(getByTestId('groupby'))
+      fireEvent.click(getAllByText('Col1')[1]!)
+
+      //open all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', [cell21, cell11, cell31])      
+    })    
+
+    it('Collapses group by list - fire event', () => {
+      const { container, getAllByText, getByTestId } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      fireEvent.click(getByTestId('groupby'))
+      fireEvent.click(getAllByText('Col1')[1]!)
+
+      //open all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      emitMock.mockClear()
+
+      //collapse 1st group
+      fireEvent.click(container.querySelector('.ms-GroupHeader-expand')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', [cell21])      
+    })
+
+    it('Expands group by list - fire event', () => {
+      const { container, getAllByText, getByTestId } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      fireEvent.click(getByTestId('groupby'))
+      fireEvent.click(getAllByText('Col1')[1]!)
+
+      //open 1st group
+      fireEvent.click(container.querySelector('.ms-GroupHeader-expand')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', [cell21])       
+    })    
   })
 
   describe('Groups', () => {
@@ -1778,6 +1830,82 @@ describe('Table.tsx', () => {
       expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount + items - filteredItem)
     })
 
+    it('Collapses all groups - fire event', () => {
+      const { container, getAllByRole } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      //collapse all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupA', 'GroupB'])
+      expect(emitMock).toHaveBeenCalledTimes(1)      
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount)
+    })
+
+    it('Expands all groups - fire event', () => {
+      const { container, getAllByRole } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      //collapse all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      emitMock.mockClear()
+
+      //open all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupA', 'GroupB'])
+      expect(emitMock).toHaveBeenCalledTimes(1)        
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount + items)
+    })
+
+    it('Collapses group - fire event', () => {
+      const { container, getAllByRole } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      fireEvent.click(container.querySelector('.ms-GroupHeader-expand')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupA'])
+      expect(emitMock).toHaveBeenCalledTimes(1)
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount + filteredItem)
+    })
+
+    it('Expands group - fire event', () => {
+      const { container, getAllByRole } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      emitMock.mockClear()
+
+      fireEvent.click(container.querySelector('.ms-GroupHeader-expand')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupA'])
+      expect(emitMock).toHaveBeenCalledTimes(1)      
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount + items - filteredItem)
+    })    
+
+    it('Collapses all groups when some already collapsed - fire event', () => {
+      const { container, getAllByRole } = render(<XTable model={{ ...tableProps, events: ['group_change'] }} />)
+
+      //collapse all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupA', 'GroupB'])
+      expect(emitMock).toHaveBeenCalledTimes(1)  
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount)          
+      emitMock.mockClear()
+
+      //open all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupA', 'GroupB'])
+      expect(emitMock).toHaveBeenCalledTimes(1)  
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount + items)          
+      emitMock.mockClear()
+
+      //collapse GroupA
+      fireEvent.click(container.querySelector('.ms-GroupHeader-expand')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupA'])
+      expect(emitMock).toHaveBeenCalledTimes(1)      
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount + filteredItem)
+      emitMock.mockClear()
+
+      //collapse all groups
+      fireEvent.click(container.querySelector('.ms-DetailsHeader-collapseButton')!)
+      expect(emitMock).toHaveBeenCalledWith(tableProps.name, 'group_change', ['GroupB'])
+      expect(emitMock).toHaveBeenCalledTimes(1)  
+      expect(getAllByRole('row')).toHaveLength(headerRow + groupHeaderRowsCount)                
+    })   
+
     it('Checks if expanded state is preserved after sort', () => {
       const { container, getAllByRole } = render(<XTable model={tableProps} />)
 

ui/src/table.tsx

@@ -152,7 +152,7 @@ export interface Table {
   groups?: TableGroup[]
   /** Display a pagination control at the bottom of the table. Set this value using `ui.table_pagination()`. */
   pagination?: TablePagination
-  /** The events to capture on this table when pagination is set. One of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset' | 'select'. */
+  /** The events to capture on this table. When pagination is set, one of 'search' | 'sort' | 'filter' | 'download' | 'page_change' | 'reset'. These events are available regardless of pagination: 'select' | 'group_change'. */
   events?: S[]
   /** True to allow only one row to be selected at time. Mutually exclusive with `multiple` attr. */
   single?: B
@@ -491,14 +491,33 @@ const
             } />
         )
       }, []),
-      onToggleCollapseAll = (isAllCollapsed: B) => expandedRefs.current = isAllCollapsed ? {} : null,
+      onToggleCollapseAll = (isAllCollapsed: B) => {
+        if (m.events?.includes('group_change')) {
+          const changedGroups =
+            isAllCollapsed && expandedRefs.current && Object.keys(expandedRefs.current).length > 0
+              ? Object.keys(expandedRefs.current)
+              : groups?.map(group => group.name)
+          wave.emit(m.name, 'group_change', changedGroups)
+        }
+        expandedRefs.current = isAllCollapsed ? {} : null       
+      },
       onToggleCollapse = ({ key, isCollapsed }: Fluent.IGroup) => {
+        if (m.events?.includes('group_change')) {
+          wave.emit(m.name, 'group_change', [key])
+        }           
         if (expandedRefs.current) {
           isCollapsed
             ? expandedRefs.current[key] = false
             : delete expandedRefs.current[key]
         } else {
-          expandedRefs.current = { [key]: false }
+          if (groups){
+            expandedRefs.current = groups?.reduce((acc, { name }) => {
+              if (name != key){
+                acc[name] = false
+              }
+              return acc
+            }, {} as { [key: S]: B })       
+          }
         }
       },
       onRenderRow = (props?: Fluent.IDetailsRowProps) => props

website/widgets/form/table.md

@@ -401,7 +401,7 @@ q.page['example'] = ui.form_card(box='1 1 3 4', items=[
 
 ### With collapsed groups
 
-Groups are shown in a collapsed state by default. With the `collapsed` attribute you can change this behavior.
+Groups are shown in a collapsed state by default. With the `collapsed` attribute you can change this behavior. You can also keep track of the collapsed states by registering a `'group_change'` [event](/docs/examples/table-events-group) (populated in `q.events`). This is useful when needing to refresh the table and persist collapsed states.
 
 ```py
 q.page['example'] = ui.form_card(box='1 1 3 4', items=[
@@ -421,7 +421,8 @@ q.page['example'] = ui.form_card(box='1 1 3 4', items=[
                 ui.table_row(name='row4', cells=['Task4', 'Low']),
                 ui.table_row(name='row5', cells=['Task5', 'Very High'])
             ])
-        ])
+        ],
+        events=['group_change'])
 ])
 ```