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527 行
23 KiB
527 行
23 KiB
using System.Collections.Generic;
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using Unity.UIWidgets.foundation;
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using Unity.UIWidgets.gestures;
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using Unity.UIWidgets.painting;
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using Unity.UIWidgets.rendering;
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using Unity.UIWidgets.service;
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using Unity.UIWidgets.ui;
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using Unity.UIWidgets.widgets;
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using UnityEngine;
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using Color = Unity.UIWidgets.ui.Color;
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using TextStyle = Unity.UIWidgets.painting.TextStyle;
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namespace Unity.UIWidgets.material {
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public delegate Widget InputCounterWidgetBuilder(
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BuildContext buildContext,
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int? currentLength,
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int? maxLength,
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bool? isFocused);
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public class TextField : StatefulWidget {
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public TextField(Key key = null, TextEditingController controller = null, FocusNode focusNode = null,
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InputDecoration decoration = null, bool noDecoration = false, TextInputType keyboardType = null,
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TextInputAction? textInputAction = null,
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TextCapitalization textCapitalization = TextCapitalization.none, TextStyle style = null,
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TextAlign textAlign = TextAlign.left, TextDirection textDirection = TextDirection.ltr,
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bool autofocus = false, bool obscureText = false, bool autocorrect = false, int? maxLines = 1,
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int? maxLength = null, bool maxLengthEnforced = true, ValueChanged<string> onChanged = null,
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VoidCallback onEditingComplete = null,
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ValueChanged<string> onSubmitted = null, List<TextInputFormatter> inputFormatters = null,
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bool? enabled = null, float? cursorWidth = 2.0f, Radius cursorRadius = null, Color cursorColor = null,
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Brightness? keyboardAppearance = null, EdgeInsets scrollPadding = null,
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DragStartBehavior dragStartBehavior = DragStartBehavior.down,
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bool? enableInteractiveSelection = null,
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GestureTapCallback onTap = null,
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InputCounterWidgetBuilder buildCounter = null
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) : base(key: key) {
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D.assert(maxLines == null || maxLines > 0);
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D.assert(maxLength == null || maxLength == TextField.noMaxLength || maxLength > 0);
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this.controller = controller;
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this.focusNode = focusNode;
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this.decoration = noDecoration ? null : (decoration ?? new InputDecoration());
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this.textInputAction = textInputAction;
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this.textCapitalization = textCapitalization;
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this.style = style;
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this.textAlign = textAlign;
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this.textDirection = textDirection;
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this.autofocus = autofocus;
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this.obscureText = obscureText;
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this.autocorrect = autocorrect;
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this.maxLines = maxLines;
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this.maxLength = maxLength;
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this.maxLengthEnforced = maxLengthEnforced;
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this.onChanged = onChanged;
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this.onEditingComplete = onEditingComplete;
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this.onSubmitted = onSubmitted;
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this.inputFormatters = inputFormatters;
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this.enabled = enabled;
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this.cursorWidth = cursorWidth;
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this.cursorColor = cursorColor;
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this.cursorRadius = cursorRadius;
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this.onSubmitted = onSubmitted;
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this.keyboardAppearance = keyboardAppearance;
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this.enableInteractiveSelection = enableInteractiveSelection;
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this.onTap = onTap;
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this.keyboardType = keyboardType ?? (maxLines == 1 ? TextInputType.text : TextInputType.multiline);
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this.scrollPadding = scrollPadding ?? EdgeInsets.all(20.0f);
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this.dragStartBehavior = dragStartBehavior;
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this.buildCounter = buildCounter;
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}
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public readonly TextEditingController controller;
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public readonly FocusNode focusNode;
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public readonly InputDecoration decoration;
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public readonly TextInputType keyboardType;
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public readonly TextInputAction? textInputAction;
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public readonly TextCapitalization textCapitalization;
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public readonly TextStyle style;
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public readonly TextAlign textAlign;
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public readonly TextDirection textDirection;
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public readonly bool autofocus;
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public readonly bool obscureText;
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public readonly bool autocorrect;
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public readonly int? maxLines;
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public const long noMaxLength = -1;
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public readonly int? maxLength;
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public readonly bool maxLengthEnforced;
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public readonly ValueChanged<string> onChanged;
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public readonly VoidCallback onEditingComplete;
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public readonly ValueChanged<string> onSubmitted;
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public readonly List<TextInputFormatter> inputFormatters;
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public readonly bool? enabled;
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public readonly float? cursorWidth;
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public readonly Radius cursorRadius;
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public readonly Color cursorColor;
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public readonly Brightness? keyboardAppearance;
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public readonly EdgeInsets scrollPadding;
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public readonly bool? enableInteractiveSelection;
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public readonly DragStartBehavior dragStartBehavior;
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public bool selectionEnabled {
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get {
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return this.enableInteractiveSelection ?? !this.obscureText;
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}
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}
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public readonly GestureTapCallback onTap;
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public readonly InputCounterWidgetBuilder buildCounter;
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public override State createState() {
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return new _TextFieldState();
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}
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public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
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base.debugFillProperties(properties);
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properties.add(
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new DiagnosticsProperty<TextEditingController>("controller", this.controller, defaultValue: null));
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properties.add(new DiagnosticsProperty<FocusNode>("focusNode", this.focusNode, defaultValue: null));
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properties.add(new DiagnosticsProperty<bool?>("enabled", this.enabled, defaultValue: null));
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properties.add(new DiagnosticsProperty<InputDecoration>("decoration", this.decoration, defaultValue: new InputDecoration()));
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properties.add(new DiagnosticsProperty<TextInputType>("keyboardType", this.keyboardType,
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defaultValue: TextInputType.text));
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properties.add(new DiagnosticsProperty<TextStyle>("style", this.style, defaultValue: null));
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properties.add(new DiagnosticsProperty<bool>("autofocus", this.autofocus, defaultValue: false));
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properties.add(new DiagnosticsProperty<bool>("obscureText", this.obscureText, defaultValue: false));
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properties.add(new DiagnosticsProperty<bool>("autocorrect", this.autocorrect, defaultValue: true));
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properties.add(new IntProperty("maxLines", this.maxLines, defaultValue: 1));
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properties.add(new IntProperty("maxLength", this.maxLength, defaultValue: null));
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properties.add(new FlagProperty("maxLengthEnforced", value: this.maxLengthEnforced, defaultValue: true,
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ifFalse: "maxLength not enforced"));
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properties.add(new EnumProperty<TextInputAction?>("textInputAction", this.textInputAction, defaultValue: null));
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properties.add(new EnumProperty<TextCapitalization>("textCapitalization", this.textCapitalization, defaultValue: TextCapitalization.none));
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properties.add(new EnumProperty<TextAlign>("textAlign", this.textAlign, defaultValue: TextAlign.left));
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properties.add(new EnumProperty<TextDirection>("textDirection", this.textDirection, defaultValue: null));
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properties.add(new FloatProperty("cursorWidth", this.cursorWidth, defaultValue: 2.0f));
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properties.add(new DiagnosticsProperty<Radius>("cursorRadius", this.cursorRadius, defaultValue: null));
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properties.add(new DiagnosticsProperty<Color>("cursorColor", this.cursorColor, defaultValue: null));
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properties.add(new DiagnosticsProperty<Brightness?>("keyboardAppearance", this.keyboardAppearance, defaultValue: null));
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properties.add(new DiagnosticsProperty<EdgeInsets>("scrollPadding", this.scrollPadding, defaultValue: EdgeInsets.all(20.0f)));
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properties.add(new FlagProperty("selectionEnabled", value: this.selectionEnabled, defaultValue: true, ifFalse: "selection disabled"));
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}
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}
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class _TextFieldState : AutomaticKeepAliveClientMixin<TextField> {
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readonly GlobalKey<EditableTextState> _editableTextKey = new LabeledGlobalKey<EditableTextState>();
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HashSet<InteractiveInkFeature> _splashes;
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InteractiveInkFeature _currentSplash;
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TextEditingController _controller;
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TextEditingController _effectiveController {
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get { return this.widget.controller ?? this._controller; }
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}
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FocusNode _focusNode;
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FocusNode _effectiveFocusNode {
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get {
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if (this.widget.focusNode != null) {
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return this.widget.focusNode;
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}
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if (this._focusNode != null) {
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return this._focusNode;
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}
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this._focusNode = new FocusNode();
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return this._focusNode;
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}
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}
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bool needsCounter {
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get {
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return this.widget.maxLength != null
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&& this.widget.decoration != null
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&& this.widget.decoration.counterText == null;
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}
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}
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InputDecoration _getEffectiveDecoration() {
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MaterialLocalizations localizations = MaterialLocalizations.of(this.context);
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ThemeData themeData = Theme.of(this.context);
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InputDecoration effectiveDecoration = (this.widget.decoration ?? new InputDecoration())
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.applyDefaults(themeData.inputDecorationTheme)
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.copyWith(
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enabled: this.widget.enabled,
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hintMaxLines: this.widget.decoration?.hintMaxLines ?? this.widget.maxLines
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);
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if (effectiveDecoration.counter != null || effectiveDecoration.counterText != null) {
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return effectiveDecoration;
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}
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Widget counter;
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int currentLength = this._effectiveController.value.text.Length;
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if (effectiveDecoration.counter == null
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&& effectiveDecoration.counterText == null
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&& this.widget.buildCounter != null) {
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bool isFocused = this._effectiveFocusNode.hasFocus;
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counter = this.widget.buildCounter(
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this.context,
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currentLength: currentLength,
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maxLength: this.widget.maxLength,
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isFocused: isFocused
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);
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return effectiveDecoration.copyWith(counter: counter);
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}
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if (this.widget.maxLength == null) {
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return effectiveDecoration;
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}
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string counterText = $"{currentLength}";
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if (this.widget.maxLength > 0) {
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counterText += $"/{this.widget.maxLength}";
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if (this._effectiveController.value.text.Length > this.widget.maxLength) {
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return effectiveDecoration.copyWith(
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errorText: effectiveDecoration.errorText ?? "",
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counterStyle: effectiveDecoration.errorStyle
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?? themeData.textTheme.caption.copyWith(color: themeData.errorColor),
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counterText: counterText
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);
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}
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}
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// Handle length exceeds maxLength
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return effectiveDecoration.copyWith(
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counterText: counterText
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);
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}
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public override void initState() {
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base.initState();
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if (this.widget.controller == null) {
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this._controller = new TextEditingController();
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}
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}
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public override void didUpdateWidget(StatefulWidget oldWidget) {
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base.didUpdateWidget(oldWidget);
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if (this.widget.controller == null && ((TextField) oldWidget).controller != null) {
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this._controller = TextEditingController.fromValue(((TextField) oldWidget).controller.value);
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}
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else if (this.widget.controller != null && ((TextField) oldWidget).controller == null) {
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this._controller = null;
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}
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bool isEnabled = this.widget.enabled ?? this.widget.decoration?.enabled ?? true;
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bool wasEnabled = ((TextField) oldWidget).enabled ?? ((TextField) oldWidget).decoration?.enabled ?? true;
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if (wasEnabled && !isEnabled) {
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this._effectiveFocusNode.unfocus();
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}
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}
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public override void dispose() {
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this._focusNode?.dispose();
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base.dispose();
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}
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void _requestKeyboard() {
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this._editableTextKey.currentState?.requestKeyboard();
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}
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void _handleSelectionChanged(TextSelection selection, SelectionChangedCause cause) {
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if (Theme.of(this.context).platform == RuntimePlatform.IPhonePlayer
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&& cause == SelectionChangedCause.longPress) {
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this._editableTextKey.currentState?.bringIntoView(selection.basePos);
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}
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}
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InteractiveInkFeature _createInkFeature(Offset globalPosition) {
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MaterialInkController inkController = Material.of(this.context);
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ThemeData themeData = Theme.of(this.context);
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BuildContext editableContext = this._editableTextKey.currentContext;
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RenderBox referenceBox =
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(RenderBox) (InputDecorator.containerOf(editableContext) ?? editableContext.findRenderObject());
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Offset position = referenceBox.globalToLocal(globalPosition);
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Color color = themeData.splashColor;
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InteractiveInkFeature splash = null;
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void handleRemoved() {
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if (this._splashes != null) {
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D.assert(this._splashes.Contains(splash));
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this._splashes.Remove(splash);
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if (this._currentSplash == splash) {
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this._currentSplash = null;
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}
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this.updateKeepAlive();
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} // else we're probably in deactivate()
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}
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splash = themeData.splashFactory.create(
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controller: inkController,
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referenceBox: referenceBox,
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position: position,
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color: color,
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containedInkWell: true,
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borderRadius: BorderRadius.zero,
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onRemoved: handleRemoved
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);
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return splash;
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}
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RenderEditable _renderEditable {
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get { return this._editableTextKey.currentState.renderEditable; }
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}
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void _handleTapDown(TapDownDetails details) {
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this._renderEditable.handleTapDown(details);
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this._startSplash(details.globalPosition);
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}
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void _handleSingleTapUp(TapUpDetails details) {
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if (this.widget.enableInteractiveSelection == true) {
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this._renderEditable.handleTap();
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}
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this._requestKeyboard();
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this._confirmCurrentSplash();
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if (this.widget.onTap != null) {
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this.widget.onTap();
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}
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}
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void _handleSingleTapCancel() {
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this._cancelCurrentSplash();
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}
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void _handleLongPress() {
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if (this.widget.enableInteractiveSelection == true) {
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this._renderEditable.handleLongPress();
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}
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this._confirmCurrentSplash();
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}
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void _handleDragSelectionStart(DragStartDetails details) {
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this._renderEditable.selectPositionAt(
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from: details.globalPosition,
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cause: SelectionChangedCause.drag);
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this._startSplash(details.globalPosition);
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}
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void _handleDragSelectionUpdate(DragStartDetails startDetails,
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DragUpdateDetails updateDetails) {
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this._renderEditable.selectPositionAt(
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from: startDetails.globalPosition,
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to: updateDetails.globalPosition,
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cause: SelectionChangedCause.drag);
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}
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void _startSplash(Offset globalPosition) {
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if (this._effectiveFocusNode.hasFocus) {
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return;
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}
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InteractiveInkFeature splash = this._createInkFeature(globalPosition);
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this._splashes = this._splashes ?? new HashSet<InteractiveInkFeature>();
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this._splashes.Add(splash);
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this._currentSplash = splash;
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this.updateKeepAlive();
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}
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void _confirmCurrentSplash() {
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this._currentSplash?.confirm();
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this._currentSplash = null;
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}
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void _cancelCurrentSplash() {
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this._currentSplash?.cancel();
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}
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protected override bool wantKeepAlive {
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get { return this._splashes != null && this._splashes.isNotEmpty(); }
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}
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public override void deactivate() {
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if (this._splashes != null) {
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HashSet<InteractiveInkFeature> splashes = this._splashes;
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this._splashes = null;
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foreach (InteractiveInkFeature splash in splashes) {
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splash.dispose();
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}
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this._currentSplash = null;
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}
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D.assert(this._currentSplash == null);
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base.deactivate();
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}
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public override Widget build(BuildContext context) {
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base.build(context); // See AutomaticKeepAliveClientMixin.
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D.assert(MaterialD.debugCheckHasMaterial(context));
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D.assert(WidgetsD.debugCheckHasDirectionality(context));
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D.assert(
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!(this.widget.style != null && this.widget.style.inherit == false &&
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(this.widget.style.fontSize == null || this.widget.style.textBaseline == null)),
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() => "inherit false style must supply fontSize and textBaseline"
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);
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ThemeData themeData = Theme.of(context);
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TextStyle style = themeData.textTheme.subhead.merge(this.widget.style);
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Brightness keyboardAppearance = this.widget.keyboardAppearance ?? themeData.primaryColorBrightness;
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TextEditingController controller = this._effectiveController;
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FocusNode focusNode = this._effectiveFocusNode;
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List<TextInputFormatter> formatters = this.widget.inputFormatters ?? new List<TextInputFormatter>();
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if (this.widget.maxLength != null && this.widget.maxLengthEnforced) {
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formatters.Add(new LengthLimitingTextInputFormatter(this.widget.maxLength));
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}
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bool forcePressEnabled = false;
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TextSelectionControls textSelectionControls = MaterialUtils.materialTextSelectionControls;;
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bool paintCursorAboveText = false;
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bool cursorOpacityAnimates = false;
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Offset cursorOffset = null;
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Color cursorColor = this.widget.cursorColor ?? themeData.cursorColor;
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Radius cursorRadius = this.widget.cursorRadius;
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Widget child = new RepaintBoundary(
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child: new EditableText(
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key: this._editableTextKey,
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controller: controller,
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focusNode: focusNode,
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keyboardType: this.widget.keyboardType,
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textInputAction: this.widget.textInputAction,
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textCapitalization: this.widget.textCapitalization,
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style: style,
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textAlign: this.widget.textAlign,
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textDirection: this.widget.textDirection,
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autofocus: this.widget.autofocus,
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obscureText: this.widget.obscureText,
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autocorrect: this.widget.autocorrect,
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maxLines: this.widget.maxLines,
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selectionColor: themeData.textSelectionColor,
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selectionControls: this.widget.selectionEnabled ? textSelectionControls : null,
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onChanged: this.widget.onChanged,
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onSelectionChanged: this._handleSelectionChanged,
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onEditingComplete: this.widget.onEditingComplete,
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onSubmitted: this.widget.onSubmitted,
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inputFormatters: formatters,
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rendererIgnoresPointer: true,
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cursorWidth: this.widget.cursorWidth,
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cursorRadius: cursorRadius,
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cursorColor: cursorColor,
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cursorOpacityAnimates: cursorOpacityAnimates,
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cursorOffset: cursorOffset,
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paintCursorAboveText: paintCursorAboveText,
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backgroundCursorColor: new Color(0xFF8E8E93),// TODO: CupertinoColors.inactiveGray,
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scrollPadding: this.widget.scrollPadding,
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keyboardAppearance: keyboardAppearance,
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enableInteractiveSelection: this.widget.enableInteractiveSelection == true,
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dragStartBehavior: this.widget.dragStartBehavior
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)
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);
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if (this.widget.decoration != null) {
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child = new AnimatedBuilder(
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animation: ListenableUtils.merge(new List<Listenable> {focusNode, controller}),
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builder:
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(_context, _child) => {
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return new InputDecorator(
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decoration: this._getEffectiveDecoration(),
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baseStyle: this.widget.style,
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textAlign: this.widget.textAlign,
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isFocused: focusNode.hasFocus,
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isEmpty: controller.value.text.isEmpty(),
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child: _child
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);
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},
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child: child
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);
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|
}
|
|
|
|
return new IgnorePointer(
|
|
ignoring: !(this.widget.enabled ?? this.widget.decoration?.enabled ?? true),
|
|
child: new TextSelectionGestureDetector(
|
|
onTapDown: this._handleTapDown,
|
|
// onForcePressStart: forcePressEnabled ? this._handleForcePressStarted : null, // TODO: Remove this when force press is added
|
|
onSingleTapUp: this._handleSingleTapUp,
|
|
onSingleTapCancel: this._handleSingleTapCancel,
|
|
onSingleLongTapStart: this._handleLongPress,
|
|
onDragSelectionStart: this._handleDragSelectionStart,
|
|
onDragSelectionUpdate: this._handleDragSelectionUpdate,
|
|
behavior: HitTestBehavior.translucent,
|
|
child: child
|
|
)
|
|
);
|
|
}
|
|
}
|
|
}
|