temp push

2020-11-18 20:15:34 +05:30
parent 1742fe6f5f
commit 6411afdee0
2 changed files with 245 additions and 11 deletions
@@ -0,0 +1,142 @@
+import 'package:flutter/material.dart';
+import 'package:stream_chat_flutter/src/stream_icons.dart';
+
+typedef ChipBuilder<T> = Widget Function(BuildContext context, T chip);
+typedef OnChipAdded<T> = void Function(T chip);
+typedef OnChipRemoved<T> = void Function(T chip);
+
+class ChipsInputTextField<T> extends StatefulWidget {
+  final TextEditingController controller;
+  final FocusNode focusNode;
+  final ValueChanged<String> onInputChanged;
+  final ChipBuilder<T> chipBuilder;
+  final OnChipAdded<T> onChipAdded;
+  final OnChipRemoved<T> onChipRemoved;
+  final String hint;
+
+  const ChipsInputTextField({
+    Key key,
+    @required this.chipBuilder,
+    @required this.controller,
+    this.onInputChanged,
+    this.focusNode,
+    this.onChipAdded,
+    this.onChipRemoved,
+    this.hint = 'Type a name or group',
+  }) : super(key: key);
+
+  @override
+  ChipInputTextFieldState<T> createState() => ChipInputTextFieldState<T>();
+}
+
+class ChipInputTextFieldState<T> extends State<ChipsInputTextField<T>> {
+  final _chips = <T>{};
+  bool _pauseItemAddition = false;
+
+  void addItem(T item) {
+    if (!_pauseItemAddition) {
+      setState(() => _chips.add(item));
+      if (widget.onChipAdded != null) widget.onChipAdded(item);
+    }
+  }
+
+  void removeItem(T item) {
+    setState(() {
+      _chips.remove(item);
+      if (_chips.isEmpty) resumeItemAddition();
+    });
+    if (widget.focusNode != null) widget.focusNode.requestFocus();
+    if (widget.onChipRemoved != null) widget.onChipRemoved(item);
+  }
+
+  void pauseItemAddition() {
+    if (!_pauseItemAddition) {
+      setState(() => _pauseItemAddition = true);
+    }
+  }
+
+  void resumeItemAddition() {
+    if (_pauseItemAddition) {
+      setState(() => _pauseItemAddition = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Material(
+      elevation: 4,
+      color: Colors.white,
+      child: Container(
+        child: Padding(
+          padding: const EdgeInsets.symmetric(
+            vertical: 16.0,
+            horizontal: 16.0,
+          ),
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Padding(
+                padding: const EdgeInsets.symmetric(vertical: 10.0),
+                child: Text(
+                  'TO:',
+                  style: TextStyle(
+                    fontSize: 16,
+                    fontWeight: FontWeight.w500,
+                  ),
+                ),
+              ),
+              SizedBox(width: 12),
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Wrap(
+                      spacing: 4.0,
+                      runSpacing: 4.0,
+                      children: _chips.map((item) {
+                        return widget.chipBuilder(context, item);
+                      }).toList(),
+                    ),
+                    if (!_pauseItemAddition) ...[
+                      if (_chips.isNotEmpty) SizedBox(height: 4),
+                      TextField(
+                        controller: widget.controller,
+                        onChanged: widget.onInputChanged,
+                        focusNode: widget.focusNode,
+                        style: TextStyle(fontSize: 18),
+                        decoration: InputDecoration(
+                            isDense: true,
+                            border: InputBorder.none,
+                            focusedBorder: InputBorder.none,
+                            enabledBorder: InputBorder.none,
+                            errorBorder: InputBorder.none,
+                            disabledBorder: InputBorder.none,
+                            contentPadding: const EdgeInsets.symmetric(
+                              vertical: 8,
+                            ),
+                            hintText: widget.hint,
+                            hintStyle: TextStyle(fontSize: 18)),
+                      ),
+                    ]
+                  ],
+                ),
+              ),
+              SizedBox(width: 12),
+              IconButton(
+                icon: Icon(
+                  _chips.isEmpty ? StreamIcons.user : StreamIcons.user_add,
+                ),
+                onPressed: () {
+                  resumeItemAddition();
+                },
+                visualDensity: VisualDensity.compact,
+                padding: const EdgeInsets.all(0),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}