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FolderTreeView: Simplify the code drastically

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This commit is contained in:
Vishesh Handa
2019-12-04 01:09:58 +01:00
parent f2e40d4baf
commit 10c4de0769
1 changed files with 35 additions and 96 deletions
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131
lib/screens/folder_listing.dart
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@ -8,54 +8,49 @@ import 'package:gitjournal/note_folder.dart';
typedef void ParentSelectChanged(bool isSelected);
class TreeView extends StatelessWidget {
final List<FolderTile> parentList;
class FolderTreeView extends StatelessWidget {
final NoteFolder rootFolder;
TreeView({
this.parentList = const <FolderTile>[],
});
FolderTreeView(this.rootFolder);
@override
Widget build(BuildContext context) {
return ListView.builder(
itemBuilder: (context, index) {
return parentList[index];
},
itemCount: parentList.length,
var folderTiles = <FolderTile>[];
rootFolder.entities.forEach((entity) {
if (entity.isNote) return;
folderTiles.add(FolderTile(entity.folder));
});
return ListView(
children: folderTiles,
);
}
}
class FolderTile extends StatefulWidget {
final NoteFolder folder;
final ChildList childList;
final MainAxisSize mainAxisSize;
final CrossAxisAlignment crossAxisAlignment;
final MainAxisAlignment mainAxisAlignment;
final ParentSelectChanged callback;
//final ParentSelectChanged callback;
FolderTile({
@required this.folder,
@required this.childList,
this.mainAxisAlignment = MainAxisAlignment.center,
this.crossAxisAlignment = CrossAxisAlignment.start,
this.mainAxisSize = MainAxisSize.min,
this.callback,
});
FolderTile(this.folder);
@override
FolderTileState createState() => FolderTileState();
}
class FolderTileState extends State<FolderTile> {
final MainAxisSize mainAxisSize = MainAxisSize.min;
final CrossAxisAlignment crossAxisAlignment = CrossAxisAlignment.start;
final MainAxisAlignment mainAxisAlignment = MainAxisAlignment.center;
bool _isExpanded = false;
@override
Widget build(BuildContext context) {
return Column(
mainAxisSize: widget.mainAxisSize,
crossAxisAlignment: widget.crossAxisAlignment,
mainAxisAlignment: widget.mainAxisAlignment,
mainAxisSize: mainAxisSize,
crossAxisAlignment: crossAxisAlignment,
mainAxisAlignment: mainAxisAlignment,
children: <Widget>[
GestureDetector(
child: _buildFolderTile(),
@ -86,7 +81,7 @@ class FolderTileState extends State<FolderTile> {
}
void expand() {
if (widget.callback != null) widget.callback(_isExpanded);
//if (widget.callback != null) widget.callback(_isExpanded);
setState(() {
_isExpanded = _toggleBool(_isExpanded);
});
@ -99,37 +94,20 @@ class FolderTileState extends State<FolderTile> {
Widget _getChild() {
if (!_isExpanded) return Container();
var children = <FolderTile>[];
widget.folder.entities.forEach((entity) {
if (entity.isNote) return;
children.add(FolderTile(entity.folder));
});
return Container(
margin: const EdgeInsets.only(left: 16.0),
child: widget.childList,
);
}
}
/// # ChildList widget
///
/// The [ChildList] widget holds a [List] of widget which will be displayed as
/// children of the [FolderTile] widget
class ChildList extends StatelessWidget {
final List<Widget> children;
final MainAxisAlignment mainAxisAlignment;
final CrossAxisAlignment crossAxisAlignment;
final MainAxisSize mainAxisSize;
ChildList({
this.children = const <Widget>[],
this.mainAxisSize = MainAxisSize.min,
this.crossAxisAlignment = CrossAxisAlignment.start,
this.mainAxisAlignment = MainAxisAlignment.center,
});
@override
Widget build(BuildContext context) {
return Column(
mainAxisAlignment: mainAxisAlignment,
crossAxisAlignment: crossAxisAlignment,
mainAxisSize: mainAxisSize,
children: children,
child: Column(
mainAxisAlignment: mainAxisAlignment,
crossAxisAlignment: crossAxisAlignment,
mainAxisSize: mainAxisSize,
children: children,
),
);
}
}
@ -140,9 +118,7 @@ class FolderListingScreen extends StatelessWidget {
final container = StateContainer.of(context);
final appState = container.appState;
var treeView = TreeView(
parentList: _constructParentList(appState.noteFolder.entities),
);
var treeView = FolderTreeView(appState.noteFolder);
return Scaffold(
appBar: AppBar(
@ -153,41 +129,4 @@ class FolderListingScreen extends StatelessWidget {
drawer: AppDrawer(),
);
}
List<FolderTile> _constructParentList(List<NoteFSEntity> entities) {
var parents = <FolderTile>[];
entities.forEach((entity) {
if (entity.isNote) {
return;
}
var folder = entity.folder;
var p = FolderTile(
folder: folder,
childList: _constructChildList(folder.entities),
);
parents.add(p);
});
return parents;
}
ChildList _constructChildList(List<NoteFSEntity> entities) {
var children = <Widget>[];
entities.forEach((entity) {
if (entity.isNote) {
return;
}
var folder = entity.folder;
var p = FolderTile(
folder: folder,
childList: _constructChildList(folder.entities),
);
children.add(p);
});
return ChildList(children: children);
}
}