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a0c9ebc0b2
Unforutnately since Input won't show text if it doesn't start with a letter, this actually makes the experiance slightly worse, but this is definitely the right direction. @abarth
132 lines
3.6 KiB
Dart
132 lines
3.6 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:sky/editing/editable_string.dart';
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import 'package:sky/editing/editable_text.dart';
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import 'package:sky/mojo/keyboard.dart';
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import 'package:sky/painting/text_style.dart';
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import 'package:sky/widgets/basic.dart';
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import 'package:sky/widgets/focus.dart';
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import 'package:sky/widgets/theme.dart';
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export 'package:sky/mojo/keyboard.dart' show KeyboardType_TEXT, KeyboardType_NUMBER, KeyboardType_PHONE, KeyboardType_DATETIME;
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typedef void StringValueChanged(String value);
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// TODO(eseidel): This isn't right, it's 16px on the bottom:
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// http://www.google.com/design/spec/components/text-fields.html#text-fields-single-line-text-field
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const EdgeDims _kTextfieldPadding = const EdgeDims.symmetric(vertical: 8.0);
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class Input extends StatefulComponent {
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Input({
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GlobalKey key,
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this.placeholder,
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this.onChanged,
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this.keyboardType : KeyboardType_TEXT
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}): super(key: key);
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int keyboardType;
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String placeholder;
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StringValueChanged onChanged;
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String _value = '';
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EditableString _editableValue;
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KeyboardHandle _keyboardHandle = KeyboardHandle.unattached;
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void initState() {
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_editableValue = new EditableString(
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text: _value,
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onUpdated: _handleTextUpdated
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);
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super.initState();
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}
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void syncFields(Input source) {
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placeholder = source.placeholder;
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onChanged = source.onChanged;
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keyboardType = source.keyboardType;
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}
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void _handleTextUpdated() {
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if (_value != _editableValue.text) {
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setState(() {
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_value = _editableValue.text;
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});
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if (onChanged != null)
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onChanged(_value);
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}
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}
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Widget build() {
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ThemeData themeData = Theme.of(this);
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bool focused = Focus.at(this);
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if (focused && !_keyboardHandle.attached) {
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_keyboardHandle = keyboard.show(_editableValue.stub, keyboardType);
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} else if (!focused && _keyboardHandle.attached) {
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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 (placeholder != null && _value.isEmpty) {
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Widget child = new Opacity(
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key: new Key('placeholder'),
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child: new Text(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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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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focusHighlightColor = focused ? themeData.primarySwatch[400] : themeData.hintColor;
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}
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textChildren.add(new EditableText(
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value: _editableValue,
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focused: focused,
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style: textStyle,
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cursorColor: cursorColor
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));
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Border focusHighlight = new Border(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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Container input = new Container(
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child: new Stack(textChildren),
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padding: _kTextfieldPadding,
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decoration: new BoxDecoration(border: focusHighlight)
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);
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return new Listener(
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child: input,
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onPointerDown: focus
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);
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}
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EventDisposition focus(_) {
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if (Focus.at(this)) {
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assert(_keyboardHandle.attached);
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_keyboardHandle.showByRequest();
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} else {
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Focus.moveTo(this);
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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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return EventDisposition.processed;
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}
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void didUnmount() {
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if (_keyboardHandle.attached)
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_keyboardHandle.release();
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super.didUnmount();
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}
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}
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