public _BottomNavigationTile(
BottomNavigationBarType?type,
BottomNavigationBarItem item,
Animation <float> animation,
float?iconSize = null,
VoidCallback onTap = null,
ColorTween colorTween = null,
float?flex = null,
bool selected = false,
float?selectedFontSize = null,
float?unselectedFontSize = null,
bool?showSelectedLabels = null,
bool?showUnselectedLabels = null,
string indexLabel = null
)
{
D.assert(type != null);
D.assert(item != null);
D.assert(animation != null);
D.assert(selectedFontSize != null && selectedFontSize >= 0);
D.assert(unselectedFontSize != null && unselectedFontSize >= 0);
this.type = type;
this.item = item;
this.animation = animation;
this.iconSize = iconSize;
this.onTap = onTap;
this.colorTween = colorTween;
this.flex = flex;
this.selected = selected;
this.selectedFontSize = selectedFontSize.Value;
this.unselectedFontSize = unselectedFontSize.Value;
this.showSelectedLabels = showSelectedLabels ?? false;
this.showUnselectedLabels = showUnselectedLabels ?? false;
this.indexLabel = indexLabel;
}
static BottomNavigationBarType _type(
BottomNavigationBarType?type,
List <BottomNavigationBarItem> items
)
{
if (type != null)
{
return(type.Value);
}
return(items.Count <= 3 ? BottomNavigationBarType.fix : BottomNavigationBarType.shifting);
}
public BottomNavigationBar(
Key key = null,
List <BottomNavigationBarItem> items = null,
ValueChanged <int> onTap = null,
int currentIndex = 0,
float elevation = 8.0f,
BottomNavigationBarType?type = null,
Color fixedColor = null,
Color backgroundColor = null,
float iconSize = 24.0f,
Color selectedItemColor = null,
Color unselectedItemColor = null,
IconThemeData selectedIconTheme = null,
IconThemeData unselectedIconTheme = null,
float selectedFontSize = 14.0f,
float unselectedFontSize = 12.0f,
TextStyle selectedLabelStyle = null,
TextStyle unselectedLabelStyle = null,
bool showSelectedLabels = true,
bool?showUnselectedLabels = null
) : base(key: key)
{
D.assert(items != null);
D.assert(items.Count >= 2);
D.assert(items.All((BottomNavigationBarItem item) => item.title != null) == true,
() => "Every item must have a non-null title"
);
D.assert(0 <= currentIndex && currentIndex < items.Count);
D.assert(elevation >= 0.0f);
D.assert(iconSize >= 0.0f);
D.assert(selectedItemColor == null || fixedColor == null,
() => "Either selectedItemColor or fixedColor can be specified, but not both!");
D.assert(selectedFontSize >= 0.0f);
D.assert(unselectedFontSize >= 0.0f);
type = _type(type, items);
this.items = items;
this.onTap = onTap;
this.currentIndex = currentIndex;
this.elevation = elevation;
this.type = type ?? (items.Count <= 3 ? BottomNavigationBarType.fix : BottomNavigationBarType.shifting);
this.backgroundColor = backgroundColor;
this.iconSize = iconSize;
this.selectedItemColor = selectedItemColor ?? fixedColor;
this.unselectedItemColor = unselectedItemColor;
this.selectedIconTheme = selectedIconTheme;
this.unselectedIconTheme = unselectedIconTheme;
this.selectedFontSize = selectedFontSize;
this.unselectedFontSize = unselectedFontSize;
this.showSelectedLabels = showSelectedLabels;
this.selectedLabelStyle = selectedLabelStyle;
this.unselectedLabelStyle = unselectedLabelStyle;
this.showUnselectedLabels = showUnselectedLabels ?? _defaultShowUnselected(_type(type, items));
}
public _TileIcon(
Key key = null,
BottomNavigationBarType?type = null,
ColorTween colorTween = null,
Animation <float> animation = null,
float?iconSize = null,
bool?selected = null,
BottomNavigationBarItem item = null
) : base(key: key)
{
this.type = type;
this.colorTween = colorTween;
this.animation = animation;
this.iconSize = iconSize;
this.selected = selected;
this.item = item;
}
public _BottomNavigationTile(
BottomNavigationBarType?type,
BottomNavigationBarItem item,
Animation <float> animation,
float?iconSize = null,
VoidCallback onTap = null,
ColorTween colorTween = null,
float?flex = null,
bool selected = false,
string indexLabel = null
)
{
this.type = type;
this.item = item;
this.animation = animation;
this.iconSize = iconSize;
this.onTap = onTap;
this.colorTween = colorTween;
this.flex = flex;
this.selected = selected;
this.indexLabel = indexLabel;
}
public BottomNavigationBar(
Key key = null,
List <BottomNavigationBarItem> items = null,
ValueChanged <int> onTap = null,
int currentIndex = 0,
BottomNavigationBarType?type = null,
Color fixedColor = null,
float iconSize = 24.0f
) : base(key: key)
{
D.assert(items != null);
D.assert(items.Count >= 2);
D.assert(items.All((BottomNavigationBarItem item) => item.title != null) == true,
"Every item must have a non-null title"
);
D.assert(0 <= currentIndex && currentIndex < items.Count);
this.items = items;
this.onTap = onTap;
this.currentIndex = currentIndex;
this.type = type ?? (items.Count <= 3 ? BottomNavigationBarType.fix : BottomNavigationBarType.shifting);
this.fixedColor = fixedColor;
this.iconSize = iconSize;
}
