mirror of
https://github.com/flutter/flutter
synced 2024-10-13 19:52:53 +00:00
Add material design features to Input
Properly support labels, hints, icons, and custom typography.
This commit is contained in:
parent
b240cda819
commit
432bfb4729
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@ -4,79 +4,41 @@
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import 'package:flutter/material.dart';
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class Field extends StatelessComponent {
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Field({
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Key key,
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this.inputKey,
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this.icon,
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this.placeholder
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}) : super(key: key);
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final GlobalKey inputKey;
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final String icon;
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final String placeholder;
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Widget build(BuildContext context) {
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return new Row(
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children: <Widget>[
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new Padding(
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padding: const EdgeDims.symmetric(horizontal: 16.0),
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child: new Icon(icon: icon)
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),
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new Flexible(
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child: new Input(
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key: inputKey,
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placeholder: placeholder
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)
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)
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]
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);
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}
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}
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final GlobalKey _kNameKey = new GlobalKey(debugLabel: 'name field');
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final GlobalKey _kPhoneKey = new GlobalKey(debugLabel: 'phone field');
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final GlobalKey _kEmailKey = new GlobalKey(debugLabel: 'email field');
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final GlobalKey _kAddressKey = new GlobalKey(debugLabel: 'address field');
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final GlobalKey _kRingtoneKey = new GlobalKey(debugLabel: 'ringtone field');
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final GlobalKey _kNoteKey = new GlobalKey(debugLabel: 'note field');
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class AddressBookHome extends StatelessComponent {
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Widget buildToolBar(BuildContext context) {
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return new ToolBar(
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right: <Widget>[new IconButton(icon: "navigation/check")]
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);
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}
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Widget buildFloatingActionButton(BuildContext context) {
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return new FloatingActionButton(
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child: new Icon(icon: 'image/photo_camera'),
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backgroundColor: Theme.of(context).accentColor
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);
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}
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static final GlobalKey nameKey = new GlobalKey(debugLabel: 'name field');
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static final GlobalKey phoneKey = new GlobalKey(debugLabel: 'phone field');
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static final GlobalKey emailKey = new GlobalKey(debugLabel: 'email field');
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static final GlobalKey addressKey = new GlobalKey(debugLabel: 'address field');
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static final GlobalKey ringtoneKey = new GlobalKey(debugLabel: 'ringtone field');
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static final GlobalKey noteKey = new GlobalKey(debugLabel: 'note field');
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Widget buildBody(BuildContext context) {
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return new Block(children: <Widget>[
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new AspectRatio(
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aspectRatio: 16.0 / 9.0,
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child: new Container(
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decoration: new BoxDecoration(backgroundColor: Colors.purple[300])
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)
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),
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new Field(inputKey: nameKey, icon: "social/person", placeholder: "Name"),
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new Field(inputKey: phoneKey, icon: "communication/phone", placeholder: "Phone"),
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new Field(inputKey: emailKey, icon: "communication/email", placeholder: "Email"),
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new Field(inputKey: addressKey, icon: "maps/place", placeholder: "Address"),
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new Field(inputKey: ringtoneKey, icon: "av/volume_up", placeholder: "Ringtone"),
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new Field(inputKey: noteKey, icon: "content/add", placeholder: "Add note"),
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]);
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}
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Widget build(BuildContext context) {
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return new Scaffold(
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toolBar: buildToolBar(context),
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body: buildBody(context),
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floatingActionButton: buildFloatingActionButton(context)
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toolBar: new ToolBar(
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center: new Text('Edit contact'),
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right: <Widget>[
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new IconButton(icon: 'navigation/check')
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]
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),
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body: new Block(
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children: <Widget>[
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new AspectRatio(
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aspectRatio: 16.0 / 9.0,
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child: new Container(
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decoration: new BoxDecoration(backgroundColor: Colors.purple[300])
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)
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),
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new Input(key: _kNameKey, icon: 'social/person', labelText: 'Name', style: Typography.black.display1),
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new Input(key: _kPhoneKey, icon: 'communication/phone', hintText: 'Phone'),
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new Input(key: _kEmailKey, icon: 'communication/email', hintText: 'Email'),
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new Input(key: _kAddressKey, icon: 'maps/place', hintText: 'Address'),
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new Input(key: _kRingtoneKey, icon: 'av/volume_up', hintText: 'Ringtone'),
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new Input(key: _kNoteKey, icon: 'content/add', hintText: 'Add note'),
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]
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),
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floatingActionButton: new FloatingActionButton(
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child: new Icon(icon: 'image/photo_camera')
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)
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);
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}
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}
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@ -90,7 +90,7 @@ class MealFragmentState extends State<MealFragment> {
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new Input(
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key: descriptionKey,
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autofocus: true,
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placeholder: 'Describe meal',
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hintText: 'Describe meal',
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onChanged: _handleDescriptionChanged
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),
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],
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@ -142,7 +142,7 @@ class MeasurementFragmentState extends State<MeasurementFragment> {
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new Input(
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key: weightKey,
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autofocus: true,
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placeholder: 'Enter weight',
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hintText: 'Enter weight',
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keyboardType: KeyboardType.number,
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onChanged: _handleWeightChanged
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),
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@ -63,7 +63,7 @@ class SettingsFragmentState extends State<SettingsFragment> {
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content: new Input(
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key: weightGoalKey,
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autofocus: true,
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placeholder: 'Goal weight in lbs',
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hintText: 'Goal weight in lbs',
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keyboardType: KeyboardType.number,
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onChanged: _handleGoalWeightChanged
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),
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@ -237,7 +237,7 @@ class StockHomeState extends State<StockHome> {
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center: new Input(
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key: searchFieldKey,
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autofocus: true,
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placeholder: 'Search stocks',
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hintText: 'Search stocks',
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onChanged: _handleSearchQueryChanged
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),
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backgroundColor: Theme.of(context).canvasColor
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@ -254,7 +254,7 @@ class StockHomeState extends State<StockHome> {
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new Input(
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key: companyNameKey,
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autofocus: true,
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placeholder: 'Company Name'
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hintText: 'Company Name'
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),
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]
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);
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@ -6,23 +6,29 @@ import 'package:flutter/rendering.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter/widgets.dart';
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import 'colors.dart';
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import 'debug.dart';
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import 'icon.dart';
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import 'theme.dart';
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export 'package:flutter/rendering.dart' show ValueChanged;
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export 'package:flutter/services.dart' show KeyboardType;
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/// A material design text input widget.
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/// A material design text input field.
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class Input extends Scrollable {
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Input({
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GlobalKey key,
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this.initialValue: '',
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this.placeholder,
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this.keyboardType: KeyboardType.text,
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this.icon,
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this.labelText,
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this.hintText,
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this.errorText,
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this.style,
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this.hideText: false,
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this.isDense: false,
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this.autofocus: false,
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this.onChanged,
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this.keyboardType: KeyboardType.text,
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this.onSubmitted
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}) : super(
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key: key,
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@ -32,28 +38,40 @@ class Input extends Scrollable {
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assert(key != null);
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}
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/// Initial editable text for the widget.
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/// Initial editable text for the input field.
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final String initialValue;
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/// The type of keyboard to use for editing the text.
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final KeyboardType keyboardType;
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/// Hint text to show when the widget doesn't contain editable text.
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final String placeholder;
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/// An icon to show adjacent to the input field.
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final String icon;
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/// Text to show above the input field.
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final String labelText;
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/// Text to show inline in the input field when it would otherwise be empty.
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final String hintText;
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/// Text to show when the input text is invalid.
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final String errorText;
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/// The style to use for the text being edited.
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final TextStyle style;
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/// Whether to hide the text being edited (e.g., for passwords).
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final bool hideText;
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/// Whether the input widget is part of a dense form (i.e., uses less vertical space).
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/// Whether the input field is part of a dense form (i.e., uses less vertical space).
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final bool isDense;
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/// Whether this input widget should focus itself is nothing else is already focused.
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/// Whether this input field should focus itself is nothing else is already focused.
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final bool autofocus;
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/// Called when the text being edited changes.
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final ValueChanged<String> onChanged;
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/// Called when the user indicates that they are done editing the text in the widget.
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/// Called when the user indicates that they are done editing the text in the field.
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final ValueChanged<String> onSubmitted;
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InputState createState() => new InputState();
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@ -95,6 +113,57 @@ class InputState extends ScrollableState<Input> {
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config.onSubmitted(_value);
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}
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Widget _buildEditableField({
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ThemeData themeData,
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bool focused,
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Color focusHighlightColor,
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TextStyle textStyle,
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double topPadding
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}) {
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Color cursorColor = themeData.primarySwatch == null ?
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themeData.accentColor :
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themeData.primarySwatch[200];
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EdgeDims margin = new EdgeDims.only(bottom: config.isDense ? 4.0 : 8.0);
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EdgeDims padding = new EdgeDims.only(top: topPadding, bottom: 8.0);
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Color borderColor = focusHighlightColor;
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double borderWidth = focused ? 2.0 : 1.0;
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if (config.errorText != null) {
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borderColor = Colors.red[700];
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borderWidth = 2.0;
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if (!config.isDense) {
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margin = const EdgeDims.only(bottom: 15.0);
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padding = new EdgeDims.only(top: topPadding, bottom: 1.0);
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}
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}
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return new Container(
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margin: margin,
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padding: padding,
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decoration: new BoxDecoration(
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border: new Border(
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bottom: new BorderSide(
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color: borderColor,
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width: borderWidth
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)
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)
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),
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child: new SizeObserver(
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onSizeChanged: _handleContainerSizeChanged,
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child: new RawEditableLine(
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value: _editableString,
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focused: focused,
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style: textStyle,
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hideText: config.hideText,
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cursorColor: cursorColor,
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onContentSizeChanged: _handleContentSizeChanged,
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scrollOffset: scrollOffsetVector
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)
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)
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);
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}
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Widget buildContent(BuildContext context) {
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assert(debugCheckHasMaterial(context));
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ThemeData themeData = Theme.of(context);
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@ -109,35 +178,72 @@ class InputState extends ScrollableState<Input> {
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_keyboardHandle.release();
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}
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TextStyle textStyle = themeData.text.subhead;
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List<Widget> textChildren = <Widget>[];
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if (config.placeholder != null && _value.isEmpty) {
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Widget child = new Opacity(
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key: const ValueKey<String>('placeholder'),
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child: new Text(config.placeholder, style: textStyle),
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opacity: themeData.hintOpacity
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);
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textChildren.add(child);
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}
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TextStyle textStyle = config.style ?? themeData.text.subhead;
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Color focusHighlightColor = themeData.accentColor;
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Color cursorColor = themeData.accentColor;
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if (themeData.primarySwatch != null) {
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cursorColor = themeData.primarySwatch[200];
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if (themeData.primarySwatch != null)
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focusHighlightColor = focused ? themeData.primarySwatch[400] : themeData.hintColor;
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double topPadding = config.isDense ? 12.0 : 16.0;
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List<Widget> stackChildren = <Widget>[];
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if (config.labelText != null) {
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TextStyle labelStyle = themeData.text.caption.copyWith(color: focused ? focusHighlightColor : themeData.hintColor);
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stackChildren.add(new Positioned(
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left: 0.0,
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top: topPadding,
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child: new Text(config.labelText, style: labelStyle)
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));
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topPadding += labelStyle.fontSize + (config.isDense ? 4.0 : 8.0);
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}
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textChildren.add(new RawEditableLine(
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value: _editableString,
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if (config.hintText != null && _value.isEmpty) {
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TextStyle hintStyle = textStyle.copyWith(color: themeData.hintColor);
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stackChildren.add(new Positioned(
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left: 0.0,
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top: topPadding,
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child: new Text(config.hintText, style: hintStyle)
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));
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}
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stackChildren.add(_buildEditableField(
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themeData: themeData,
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focused: focused,
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style: textStyle,
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hideText: config.hideText,
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cursorColor: cursorColor,
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onContentSizeChanged: _handleContentSizeChanged,
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scrollOffset: scrollOffsetVector
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focusHighlightColor: focusHighlightColor,
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textStyle: textStyle,
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topPadding: topPadding
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));
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if (config.errorText != null && !config.isDense) {
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TextStyle errorStyle = themeData.text.caption.copyWith(color: Colors.red[700]);
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stackChildren.add(new Positioned(
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left: 0.0,
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bottom: 0.0,
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child: new Text(config.errorText, style: errorStyle)
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));
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}
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Widget child = new Stack(children: stackChildren);
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if (config.icon != null) {
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double iconSize = config.isDense ? 18.0 : 24.0;
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double iconTop = topPadding + (textStyle.fontSize - iconSize) / 2.0;
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child = new Row(
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alignItems: FlexAlignItems.start,
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children: [
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new Container(
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margin: new EdgeDims.only(right: 16.0, top: iconTop),
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width: config.isDense ? 40.0 : 48.0,
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child: new Icon(
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icon: config.icon,
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color: focused ? focusHighlightColor : Colors.black45,
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size: config.isDense ? IconSize.s18 : IconSize.s24
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)
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),
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new Flexible(child: child)
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]
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);
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}
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return new GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: () {
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@ -149,23 +255,9 @@ class InputState extends ScrollableState<Input> {
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// we'll get told to rebuild and we'll take care of the keyboard then
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}
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},
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child: new SizeObserver(
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onSizeChanged: _handleContainerSizeChanged,
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child: new Container(
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child: new Stack(children: textChildren),
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margin: config.isDense ?
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const EdgeDims.symmetric(vertical: 4.0) :
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const EdgeDims.symmetric(vertical: 8.0),
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padding: const EdgeDims.symmetric(vertical: 8.0),
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decoration: new BoxDecoration(
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border: new Border(
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bottom: new BorderSide(
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color: focusHighlightColor,
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width: focused ? 2.0 : 1.0
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)
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)
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)
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)
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child: new Padding(
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padding: const EdgeDims.symmetric(horizontal: 16.0),
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child: child
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)
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);
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}
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@ -41,7 +41,7 @@ void main() {
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child: new Material(
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child: new Input(
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key: inputKey,
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placeholder: 'Placeholder',
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hintText: 'Placeholder',
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onChanged: (String value) { inputValue = value; }
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)
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)
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@ -81,7 +81,7 @@ void main() {
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child: new Material(
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child: new Input(
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key: inputKey,
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placeholder: 'Placeholder'
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hintText: 'Placeholder'
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)
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)
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);
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@ -123,7 +123,7 @@ void main() {
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child: new Material(
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child: new Input(
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key: inputKey,
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placeholder: 'Placeholder'
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hintText: 'Placeholder'
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)
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)
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);
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@ -159,7 +159,7 @@ void main() {
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child: new Input(
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key: inputKey,
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hideText: true,
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placeholder: 'Placeholder'
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hintText: 'Placeholder'
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)
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)
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);
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