Widget _buildCheckbox(
Color color = null,
bool isChecked = false,
VoidCallback onRowTap = null,
ValueChanged <bool?> onCheckboxChanged = null
)
{
Widget contents = new Padding(
padding: EdgeInsetsDirectional.only(start: horizontalMargin,
end: horizontalMargin / 2.0f),
child: new Center(
child: new Checkbox(
activeColor: color,
value: isChecked,
onChanged: onCheckboxChanged
)
)
);
if (onRowTap != null)
{
contents = new TableRowInkWell(
onTap: () => onRowTap(),
child: contents
);
}
return(new TableCell(
verticalAlignment: TableCellVerticalAlignment.fill,
child: contents
));
}
public override Widget build(BuildContext context)
{
var theme = Theme.of(context);
return(new Container(
height: 56.0f,
padding: EdgeInsetsDirectional.only(16.0f),
alignment: AlignmentDirectional.centerStart,
child: new Row(
children: new List <Widget>
{
new Radio <_ChoiceValue <T> >(
value: value,
groupValue: groupValue,
onChanged: onChanged
),
new Expanded(
child: new GestureDetector(
behavior: HitTestBehavior.opaque,
onTap: () => { onChanged(value); },
child: new Text(value.title,
style: theme.textTheme.subtitle1
)
)
)
}
)
));
}
public override Widget build(BuildContext context)
{
ColorScheme colorScheme = Theme.of(context).colorScheme;
TextTheme textTheme = Theme.of(context).textTheme;
Color controlColor = colorScheme.onSurface.withOpacity(0.60f);
var rowChildren = new List <Widget> {
new Flexible(
child: new Container(
height: material_._subHeaderHeight,
child: new InkWell(
onTap: () => widget.onTitlePressed(),
child: new Padding(
padding: EdgeInsets.symmetric(horizontal: 8),
child: new Row(
children: new List <Widget> {
new Flexible(
child: new Text(
widget.title,
overflow: TextOverflow.ellipsis,
style: textTheme.subtitle2?.copyWith(
color: controlColor
)
)
),
new RotationTransition(
turns: _controller,
child: new Icon(
Icons.arrow_drop_down,
color: controlColor
)
),
}
)
)
)
)
)
};
if (widget.mode == DatePickerMode.day)
{
// Give space for the prev/next month buttons that are underneath this row
rowChildren.Add(new SizedBox(width: material_._monthNavButtonsWidth));
}
return(new Container(
padding: EdgeInsetsDirectional.only(start: 16, end: 4),
height: material_._subHeaderHeight,
child: new Row(
children: rowChildren
)
));
}
public override Widget build(BuildContext context)
{
var theme = Theme.of(context);
return(new Container(
height: 48.0f,
padding: EdgeInsetsDirectional.only(56.0f),
alignment: AlignmentDirectional.centerStart,
child: new Text(text,
style: theme.textTheme.bodyText2.copyWith(
color: theme.primaryColor
)
)
));
}
public override Widget build(BuildContext context)
{
string previousTooltipText =
$"{_localizations.previousMonthTooltip} {_localizations.formatMonthYear(_previousMonthDate)}";
string nextTooltipText =
$"{_localizations.nextMonthTooltip} {_localizations.formatMonthYear(_nextMonthDate)}";
Color controlColor = Theme.of(context).colorScheme.onSurface.withOpacity(0.60f);
return(new Column(
children: new List <Widget> {
new Container(
padding: EdgeInsetsDirectional.only(start: 16, end: 4),
height: material_._subHeaderHeight,
child:
new Row(
children: new List <Widget> {
new Spacer(),
new IconButton(
icon: new Icon(Icons.chevron_left),
color: controlColor,
tooltip: _isDisplayingFirstMonth ? null : previousTooltipText,
onPressed: _isDisplayingFirstMonth ? (VoidCallback)null : _handlePreviousMonth
),
new IconButton(icon: new Icon(Icons.chevron_right),
color: controlColor,
tooltip: _isDisplayingLastMonth ? null : nextTooltipText,
onPressed: _isDisplayingLastMonth ? (VoidCallback)null : _handleNextMonth
)
}
)
),
new _DayHeaders(),
new Expanded(
child: PageView.builder(
controller: _pageController,
itemBuilder: _buildItems,
itemCount: utils.monthDelta(widget.firstDate, widget.lastDate) + 1,
scrollDirection: Axis.horizontal,
onPageChanged: _handleMonthPageChanged
)
)
}
));
}
public override Widget build(BuildContext context)
{
ThemeData theme = Theme.of(context);
return(new Material(
elevation: 2.0f,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(16.0f),
topRight: Radius.circular(16.0f)
),
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: new List <Widget>
{
new GestureDetector(
behavior: HitTestBehavior.opaque,
onVerticalDragUpdate: this.onVerticalDragUpdate,
onVerticalDragEnd: this.onVerticalDragEnd,
onTap: () => { this.onTap?.Invoke(); },
child: new Container(
height: 48.0f,
padding: EdgeInsetsDirectional.only(start: 16.0f),
alignment: AlignmentDirectional.centerStart,
child: new DefaultTextStyle(
style: theme.textTheme.subtitle1,
child: new Tooltip(
message: "Tap to dismiss",
child: this.title
)
)
)
),
new Divider(height: 1.0f),
new Expanded(child: this.child)
}
)
));
}
public override Widget build(BuildContext context)
{
DividerThemeData dividerTheme = DividerTheme.of(context);
float height = this.height ?? dividerTheme?.space ?? 16.0f;
float thickness = this.thickness ?? dividerTheme?.thickness ?? 0.0f;
float indent = this.indent ?? dividerTheme?.indent ?? 0.0f;
float endIndent = this.endIndent ?? dividerTheme?.endIndent ?? 0.0f;
return(new SizedBox(
height: height,
child: new Center(
child: new Container(
height: thickness,
//TODO: update to EdgeInsetsGeometry
margin: EdgeInsetsDirectional.only(start: indent,
end: endIndent),
decoration: new BoxDecoration(
border: new Border(
bottom: createBorderSide(context, color: color, width: thickness))
)
)
)
));
}
public override Widget build(BuildContext context)
{
DividerThemeData dividerTheme = DividerTheme.of(context);
float width = this.width ?? dividerTheme.space ?? 16.0f;
float thickness = this.thickness ?? dividerTheme.thickness ?? 0.0f;
float indent = this.indent ?? dividerTheme.indent ?? 0.0f;
float endIndent = this.endIndent ?? dividerTheme.endIndent ?? 0.0f;
return(new SizedBox(
width: width,
child: new Center(
child: new Container(
width: thickness,
margin: EdgeInsetsDirectional.only(top: indent,
bottom: endIndent),
decoration: new BoxDecoration(
border: new Border(
left: Divider.createBorderSide(context, color: color, width: thickness)
)
)
)
)
));
}
public override Widget build(BuildContext context)
{
D.assert(actions.isNotEmpty);
ThemeData theme = Theme.of(context);
MaterialBannerThemeData bannerTheme = MaterialBannerTheme.of(context);
bool isSingleRow = actions.Count == 1 && !forceActionsBelow;
EdgeInsetsGeometry padding = this.padding ?? bannerTheme?.padding ?? (isSingleRow
? EdgeInsetsDirectional.only(start: 16.0f, top: 2.0f)
: EdgeInsetsDirectional.only(start: 16.0f, top: 24.0f, end: 16.0f,
bottom: 4.0f));
EdgeInsetsGeometry leadingPadding = this.leadingPadding
?? bannerTheme?.padding
?? EdgeInsetsDirectional.only(end: 16.0f);
Widget buttonBar = new ButtonBar(
layoutBehavior: ButtonBarLayoutBehavior.constrained,
children: actions
);
Color backgroundColor = this.backgroundColor
?? bannerTheme?.backgroundColor
?? theme.colorScheme.surface;
TextStyle textStyle = contentTextStyle
?? bannerTheme?.contentTextStyle
?? theme.textTheme.bodyText2;
var rowList = new List <Widget>();
if (leading != null)
{
rowList.Add(new Padding(
padding: leadingPadding,
child: leading
));
}
rowList.Add(new Expanded(
child: new DefaultTextStyle(
style: textStyle,
child: content
)
));
if (isSingleRow)
{
rowList.Add(buttonBar);
}
var columnList = new List <Widget>();
columnList.Add(new Padding(
padding: padding,
child: new Row(
children: rowList
)
));
if (!isSingleRow)
{
columnList.Add(buttonBar);
}
columnList.Add(new Divider(height: 0));
return(new Container(
color: backgroundColor,
child: new Column(
children: columnList
)
));
}
public override Widget build(BuildContext context)
{
D.assert(!_debugInteractive || material_.debugCheckHasMaterial(context));
ThemeData theme = Theme.of(context);
BoxDecoration _kSelectedDecoration = new BoxDecoration(
border: new Border(bottom: Divider.createBorderSide(context, width: dividerThickness)),
// The backgroundColor has to be transparent so you can see the ink on the material
color: (Theme.of(context).brightness == Brightness.light) ? _grey100Opacity : _grey300Opacity
);
BoxDecoration _kUnselectedDecoration = new BoxDecoration(
border: new Border(bottom: Divider.createBorderSide(context, width: dividerThickness))
);
bool displayCheckboxColumn =
showCheckboxColumn && rows.Any((DataRow row) => row.onSelectChanged != null);
bool allChecked = displayCheckboxColumn &&
!rows.Any((DataRow row) => row.onSelectChanged != null && !row.selected);
List <TableColumnWidth> tableColumns =
new List <TableColumnWidth>(new TableColumnWidth[columns.Count + (displayCheckboxColumn ? 1 : 0)]);
List <TableRow> tableRows = LinqUtils <TableRow, int> .SelectList(Enumerable.Range(0, rows.Count + 1), (index) => {
return(new TableRow(
key: index == 0 ? _headingRowKey : rows[index - 1].key,
decoration: index > 0 && rows[index - 1].selected
? _kSelectedDecoration
: _kUnselectedDecoration,
children: new List <Widget>(new Widget[tableColumns.Count])
));
});
int rowIndex;
int displayColumnIndex = 0;
if (displayCheckboxColumn)
{
tableColumns[0] = new FixedColumnWidth(horizontalMargin + Checkbox.width + horizontalMargin / 2.0f);
tableRows[0].children[0] = _buildCheckbox(
color: theme.accentColor,
isChecked: allChecked,
onCheckboxChanged: _check => _handleSelectAll(_check ?? false)
);
rowIndex = 1;
foreach (DataRow row in rows)
{
tableRows[rowIndex].children[0] = _buildCheckbox(
color: theme.accentColor,
isChecked: row.selected,
onRowTap: () => {
if (row.onSelectChanged != null)
{
row.onSelectChanged(!row.selected);
}
},
onCheckboxChanged: _select => row.onSelectChanged(_select ?? false)
);
rowIndex += 1;
}
displayColumnIndex += 1;
}
for (int dataColumnIndex = 0; dataColumnIndex < columns.Count; dataColumnIndex += 1)
{
DataColumn column = columns[dataColumnIndex];
float paddingStart;
if (dataColumnIndex == 0 && displayCheckboxColumn)
{
paddingStart = horizontalMargin / 2.0f;
}
else if (dataColumnIndex == 0 && !displayCheckboxColumn)
{
paddingStart = horizontalMargin;
}
else
{
paddingStart = columnSpacing / 2.0f;
}
float paddingEnd;
if (dataColumnIndex == columns.Count - 1)
{
paddingEnd = horizontalMargin;
}
else
{
paddingEnd = columnSpacing / 2.0f;
}
EdgeInsetsDirectional padding = EdgeInsetsDirectional.only(
start: paddingStart,
end: paddingEnd
);
if (dataColumnIndex == _onlyTextColumn)
{
tableColumns[displayColumnIndex] = new IntrinsicColumnWidth(flex: 1.0f);
}
else
{
tableColumns[displayColumnIndex] = new IntrinsicColumnWidth();
}
var currentColumnIndex = dataColumnIndex;
tableRows[0].children[displayColumnIndex] = _buildHeadingCell(
context: context,
padding: padding,
label: column.label,
tooltip: column.tooltip,
numeric: column.numeric,
onSort: column.onSort != null
? () => column.onSort(currentColumnIndex, sortColumnIndex != currentColumnIndex || !sortAscending)
: (VoidCallback)null,
sorted: dataColumnIndex == sortColumnIndex,
ascending: sortAscending
);
rowIndex = 1;
foreach (DataRow row in rows)
{
DataCell cell = row.cells[dataColumnIndex];
var curRow = row;
tableRows[rowIndex].children[displayColumnIndex] = _buildDataCell(
context: context,
padding: padding,
label: cell.child,
numeric: column.numeric,
placeholder: cell.placeholder,
showEditIcon: cell.showEditIcon,
onTap: cell.onTap,
onSelectChanged: () => {
if (curRow.onSelectChanged != null)
{
curRow.onSelectChanged(!curRow.selected);
}
});
rowIndex += 1;
}
displayColumnIndex += 1;
}
return(new Table(
columnWidths: LinqUtils <int, TableColumnWidth> .SelectDictionary(tableColumns, ((TableColumnWidth x) => tableColumns.IndexOf(x))),
children: tableRows
));
}
public override Widget build(BuildContext context)
{
BoxDecoration decoration = null;
if (backgroundColor != null)
{
decoration = new BoxDecoration(color: backgroundColor);
}
EdgeInsetsDirectional padding = EdgeInsetsDirectional.only(
start: leading != null ? 8.0f : 16.0f,
end: trailing != null ? 8.0f : 16.0f
);
ThemeData theme = Theme.of(context);
ThemeData darkTheme = new ThemeData(
brightness: Brightness.dark,
accentColor: theme.accentColor,
accentColorBrightness: theme.accentColorBrightness
);
var expandChildren = new List <widgets.Widget>();
if (leading != null)
{
expandChildren.Add(new Padding(
padding: EdgeInsetsDirectional.only(end: 8.0f), child: leading));
}
if (title != null && subtitle != null)
{
expandChildren.Add(new Expanded(
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new DefaultTextStyle(
style: darkTheme.textTheme.subtitle1,
softWrap: false,
overflow: TextOverflow.ellipsis,
child: title
),
new DefaultTextStyle(
style: darkTheme.textTheme.caption,
softWrap: false,
overflow: TextOverflow.ellipsis,
child: subtitle
)
}
)
));
}
else if (title != null || subtitle != null)
{
expandChildren.Add(new Expanded(
child: new DefaultTextStyle(
style: darkTheme.textTheme.subtitle1,
softWrap: false,
overflow: TextOverflow.ellipsis,
child: title ?? subtitle
)
));
}
if (trailing != null)
{
expandChildren.Add(new Padding(
padding: EdgeInsetsDirectional.only(start: 8.0f),
child: trailing));
}
return(new Container(
padding: padding,
decoration: decoration,
height: (title != null && subtitle != null) ? 68.0f : 48.0f,
child: new Theme(
data: darkTheme,
child: IconTheme.merge(
data: new IconThemeData(color: Colors.white),
child: new Row(
crossAxisAlignment: CrossAxisAlignment.center,
children: expandChildren
)
)
)
));
}
public override Widget build(BuildContext context)
{
ThemeData theme = Theme.of(context);
ColorScheme colorScheme = theme.colorScheme;
TextTheme textTheme = theme.textTheme;
bool isDark = colorScheme.brightness == Brightness.dark;
Color primarySurfaceColor = isDark ? colorScheme.surface : colorScheme.primary;
Color onPrimarySurfaceColor = isDark ? colorScheme.onSurface : colorScheme.onPrimary;
TextStyle helpStyle = textTheme.overline?.copyWith(
color: onPrimarySurfaceColor
);
Text help = new Text(
helpText,
style: helpStyle,
maxLines: 1,
overflow: TextOverflow.ellipsis
);
Text title = new Text(
titleText,
style: titleStyle,
maxLines: (isShort || orientation == Orientation.portrait) ? 1 : 2,
overflow: TextOverflow.ellipsis
);
IconButton icon = new IconButton(
icon: new Icon(this.icon),
color: onPrimarySurfaceColor,
tooltip: iconTooltip,
onPressed: onIconPressed
);
switch (orientation)
{
case Orientation.portrait:
return(new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new Container(
height: DatePickerHeaderUtils._datePickerHeaderPortraitHeight,
color: primarySurfaceColor,
padding: EdgeInsetsDirectional.only(
start: 24f,
end: 12f
),
child: new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new SizedBox(height: 16f),
new Flexible(child: help),
new SizedBox(height: 38),
new Row(
children: new List <Widget> {
new Expanded(child: title),
icon,
}
),
}
)
)
}
));
case Orientation.landscape:
return(new Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new Container(
width: DatePickerHeaderUtils._datePickerHeaderLandscapeWidth,
color: primarySurfaceColor,
child: new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: new List <Widget> {
new SizedBox(height: 16),
new Padding(
padding: EdgeInsets.symmetric(
horizontal: DatePickerHeaderUtils._headerPaddingLandscape
),
child: help
),
new SizedBox(height: isShort ? 16 : 56),
new Padding(
padding: EdgeInsets.symmetric(
horizontal: DatePickerHeaderUtils._headerPaddingLandscape
),
child: title
),
new Spacer(),
new Padding(
padding: EdgeInsets.symmetric(
horizontal: 4
),
child: icon
),
}
)
),
}
));
}
return(null);
}
// Changes the padding between the start edge of the Material and the cart icon
// based on the number of products in the cart (padding increases when > 0
// products.)
EdgeInsetsDirectional _cartPaddingFor(int numProducts)
{
return((numProducts == 0)
? EdgeInsetsDirectional.only(start: 20.0f, end: 8.0f)
: EdgeInsetsDirectional.only(start: 32.0f, end: 8.0f));
}
public override Widget build(BuildContext context)
{
D.assert(material_.debugCheckHasMaterialLocalizations(context));
ThemeData themeData = Theme.of(context);
MaterialLocalizations localizations = MaterialLocalizations.of(context);
List <Widget> headerWidgets = new List <Widget>();
float startPadding = 24.0f;
if (_selectedRowCount == 0)
{
headerWidgets.Add(new Expanded(child: widget.header));
if (widget.header is ButtonBar)
{
startPadding = 12.0f;
}
}
else
{
headerWidgets.Add(new Expanded(
child: new Text(localizations.selectedRowCountTitle(_selectedRowCount))
));
}
if (widget.actions != null)
{
headerWidgets.AddRange(
LinqUtils <Widget> .SelectList(widget.actions, ((Widget action) => {
return(new Padding(
padding: EdgeInsetsDirectional.only(
start: 24.0f - 8.0f * 2.0f),
child: action
));
}))
);
}
TextStyle footerTextStyle = themeData.textTheme.caption;
List <Widget> footerWidgets = new List <Widget>();
if (widget.onRowsPerPageChanged != null)
{
List <Widget> availableRowsPerPage = LinqUtils <Widget, int> .SelectList(
LinqUtils <int> .WhereList(widget.availableRowsPerPage, ((int value) => value <= _rowCount || value == widget.rowsPerPage)),
(int value) => {
return((Widget) new DropdownMenuItem <int>(
value: value,
child: new Text($"{value}")
));
});
footerWidgets.AddRange(new List <Widget>()
{
new Container(width: 14.0f), // to match trailing padding in case we overflow and end up scrolling
new Text(localizations.rowsPerPageTitle),
new ConstrainedBox(
constraints: new BoxConstraints(minWidth: 64.0f), // 40.0 for the text, 24.0 for the icon
child: new Align(
alignment: AlignmentDirectional.centerEnd,
child: new DropdownButtonHideUnderline(
child: new DropdownButton <int>(
items: availableRowsPerPage.Cast <DropdownMenuItem <int> >().ToList(),
value: widget.rowsPerPage,
onChanged: widget.onRowsPerPageChanged,
style: footerTextStyle,
iconSize: 24.0f
)
)
)
),
});
}
footerWidgets.AddRange(new List <Widget>()
{
new Container(width: 32.0f),
new Text(
localizations.pageRowsInfoTitle(
_firstRowIndex + 1,
_firstRowIndex + widget.rowsPerPage,
_rowCount,
_rowCountApproximate
)
),
new Container(width: 32.0f),
new IconButton(
icon: new Icon(Icons.chevron_left),
padding: EdgeInsets.zero,
tooltip:
localizations.previousPageTooltip,
onPressed: _firstRowIndex <= 0 ? (VoidCallback)null : _handlePrevious),
new Container(width: 24.0f),
new IconButton(
icon: new Icon(Icons.chevron_right),
padding: EdgeInsets.zero,
tooltip:
localizations.nextPageTooltip,
onPressed: (!_rowCountApproximate && (_firstRowIndex + widget.rowsPerPage >= _rowCount))
? (VoidCallback)null
: _handleNext
),
new Container(width: 14.0f),
});
return(new LayoutBuilder(
builder: (BuildContext _context, BoxConstraints constraints) => {
return new Card(
child: new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: new List <Widget> {
new DefaultTextStyle(
style: _selectedRowCount > 0
? themeData.textTheme.subtitle1.copyWith(color: themeData.accentColor)
: themeData.textTheme.headline6.copyWith(fontWeight: FontWeight.w400),
child: IconTheme.merge(
data: new IconThemeData(
opacity: 0.54f
),
child: new Ink(
height: 64.0f,
color: _selectedRowCount > 0 ? themeData.secondaryHeaderColor : null,
child: new Padding(
padding: EdgeInsetsDirectional.only(
start: startPadding, end: 14.0f),
child: new Row(
mainAxisAlignment: MainAxisAlignment.end,
children: headerWidgets
)
)
)
)
),
new SingleChildScrollView(
scrollDirection: Axis.horizontal,
dragStartBehavior: widget.dragStartBehavior,
child: new ConstrainedBox(
constraints: new BoxConstraints(minWidth: constraints.minWidth),
child: new DataTable(
key: _tableKey,
columns: widget.columns,
sortColumnIndex: widget.sortColumnIndex,
sortAscending: widget.sortAscending,
onSelectAll: widget.onSelectAll,
dataRowHeight: widget.dataRowHeight,
headingRowHeight: widget.headingRowHeight,
horizontalMargin: widget.horizontalMargin,
columnSpacing: widget.columnSpacing,
rows: _getRows(_firstRowIndex, widget.rowsPerPage)
)
)
),
new DefaultTextStyle(
style: footerTextStyle,
child: IconTheme.merge(
data: new IconThemeData(
opacity: 0.54f
),
child:
new Container(
height: 56.0f,
child: new SingleChildScrollView(
dragStartBehavior: widget.dragStartBehavior,
scrollDirection: Axis.horizontal,
reverse: true,
child: new Row(
children: footerWidgets
)
)
)
)
)
}
)
);
}
));
}
public override Widget build(BuildContext context)
{
List <MergeableMaterialItem> items = new List <MergeableMaterialItem>();
for (int i = 0; i < widget.children.Count; i++)
{
int expandIndex = i;
if (_isChildExpanded(expandIndex) && expandIndex != 0 && !_isChildExpanded(expandIndex - 1))
{
items.Add(new MaterialGap(
key: new _SaltedKey <BuildContext, int>(context, expandIndex * 2 - 1)));
}
ExpansionPanel child = widget.children[expandIndex];
Widget headerWidget = child.headerBuilder(
context,
_isChildExpanded(expandIndex)
);
Widget expandIconContainer = new Container(
margin: EdgeInsetsDirectional.only(end: 8.0f),
child: new ExpandIcon(
isExpanded: _isChildExpanded(expandIndex),
padding: EdgeInsets.all(16.0f),
onPressed: !child.canTapOnHeader
? (bool isExpanded) => _handlePressed(isExpanded, expandIndex)
: (ValueChanged <bool>)null
)
);
Widget header = new Row(
children: new List <Widget> {
new Expanded(
child: new AnimatedContainer(
duration: widget.animationDuration,
curve: Curves.fastOutSlowIn,
margin: _isChildExpanded(expandIndex) ? widget.expandedHeaderPadding : EdgeInsets.zero,
child: new ConstrainedBox(
constraints: new BoxConstraints(
minHeight: material_._kPanelHeaderCollapsedHeight),
child: headerWidget
)
)
),
expandIconContainer,
}
);
if (child.canTapOnHeader)
{
header = new InkWell(
onTap: () => _handlePressed(_isChildExpanded(expandIndex), expandIndex),
child: header
);
}
items.Add(new MaterialSlice(
key: new _SaltedKey <BuildContext, int>(context, expandIndex * 2),
child: new Column(
children: new List <Widget> {
header,
new AnimatedCrossFade(
firstChild: new Container(height: 0.0f),
secondChild: child.body,
firstCurve: new Interval(0.0f, 0.6f, curve: Curves.fastOutSlowIn),
secondCurve: new Interval(0.4f, 1.0f, curve: Curves.fastOutSlowIn),
sizeCurve: Curves.fastOutSlowIn,
crossFadeState: _isChildExpanded(expandIndex)
? CrossFadeState.showSecond
: CrossFadeState.showFirst,
duration: widget.animationDuration
)
}
)
)
);
if (_isChildExpanded(expandIndex) && expandIndex != widget.children.Count - 1)
{
items.Add(new MaterialGap(
key: new _SaltedKey <BuildContext, int>(context, expandIndex * 2 + 1)));
}
}
return(new MergeableMaterial(
hasDividers: true,
children: items));
}
