83 lines
1.7 KiB
Dart
83 lines
1.7 KiB
Dart
import 'package:flutter/material.dart';
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abstract class WindowCollection extends ChangeNotifier {
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double flex = 1;
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void update() {
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notifyListeners();
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}
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}
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class WindowTab {
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final String id;
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final Widget Function(BuildContext, bool selected, int index) title;
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final Widget child;
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final bool canClose;
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final Function() onClose;
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WindowTab(
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{@required this.id,
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@required this.title,
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this.child,
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this.canClose = true,
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this.onClose});
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}
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class WindowRow extends WindowCollection {
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final List<WindowCollection> children;
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WindowRow(this.children);
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}
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class WindowColumn extends WindowCollection {
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final List<WindowCollection> children;
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WindowColumn(this.children);
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}
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class WindowGroup extends WindowCollection {
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WindowGroup([WindowTab tab, bool closeable = true]) {
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if (tab != null) _tabs.add(tab);
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canClose = closeable;
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}
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bool canClose = true;
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final List<WindowTab> _tabs = [];
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List<WindowTab> get tabs => _tabs;
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int _activeTab = 0;
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int get activeTabIndex => _activeTab;
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void selectTab(int index) {
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_activeTab = index;
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notifyListeners();
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}
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void init(List<WindowTab> tabs) {
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_tabs.addAll(tabs);
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notifyListeners();
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}
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void addTab(WindowTab tab, [int index]) {
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if (index != null) {
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_tabs.insert(index, tab);
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_activeTab = index;
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} else {
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_tabs.add(tab);
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_activeTab = _tabs.length - 1;
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}
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notifyListeners();
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}
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void removeTab(WindowTab tab) {
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_tabs.remove(tab);
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if (_activeTab > _tabs.length - 1) {
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_activeTab = _tabs.length - 1;
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}
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notifyListeners();
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}
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void close() {
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if (!canClose) return;
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_tabs.clear();
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notifyListeners();
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}
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}
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