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574 行
24 KiB
574 行
24 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 TextStyle = Unity.UIWidgets.painting.TextStyle;
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namespace Unity.UIWidgets.cupertino {
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class CupertinoTextFieldUtils {
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public static readonly BorderSide _kDefaultRoundedBorderSide = new BorderSide(
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color: CupertinoColors.lightBackgroundGray,
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style: BorderStyle.solid,
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width: 0.0f
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);
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public static readonly Border _kDefaultRoundedBorder = new Border(
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top: _kDefaultRoundedBorderSide,
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bottom: _kDefaultRoundedBorderSide,
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left: _kDefaultRoundedBorderSide,
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right: _kDefaultRoundedBorderSide
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);
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public static readonly BoxDecoration _kDefaultRoundedBorderDecoration = new BoxDecoration(
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border: _kDefaultRoundedBorder,
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borderRadius: BorderRadius.all(Radius.circular(4.0f))
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);
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public static readonly Color _kSelectionHighlightColor = new Color(0x667FAACF);
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public static readonly Color _kInactiveTextColor = new Color(0xFFC2C2C2);
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public static readonly Color _kDisabledBackground = new Color(0xFFFAFAFA);
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public const int _iOSHorizontalCursorOffsetPixels = -2;
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}
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public enum OverlayVisibilityMode {
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never,
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editing,
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notEditing,
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always
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}
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public class CupertinoTextField : StatefulWidget {
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public CupertinoTextField(
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Key key = null,
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TextEditingController controller = null,
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FocusNode focusNode = null,
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BoxDecoration decoration = null,
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EdgeInsets padding = null,
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string placeholder = null,
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TextStyle placeholderStyle = null,
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Widget prefix = null,
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OverlayVisibilityMode prefixMode = OverlayVisibilityMode.always,
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Widget suffix = null,
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OverlayVisibilityMode suffixMode = OverlayVisibilityMode.always,
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OverlayVisibilityMode clearButtonMode = OverlayVisibilityMode.never,
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TextInputType keyboardType = null,
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TextInputAction? textInputAction = null,
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TextCapitalization textCapitalization = TextCapitalization.none,
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TextStyle style = null,
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StrutStyle strutStyle = null,
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TextAlign textAlign = TextAlign.left,
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bool autofocus = false,
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bool obscureText = false,
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bool autocorrect = true,
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int? maxLines = 1,
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int? minLines = null,
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bool expands = false,
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int? maxLength = null,
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bool maxLengthEnforced = true,
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ValueChanged<string> onChanged = null,
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VoidCallback onEditingComplete = null,
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ValueChanged<string> onSubmitted = null,
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List<TextInputFormatter> inputFormatters = null,
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bool? enabled = null,
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float cursorWidth = 2.0f,
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Radius cursorRadius = null,
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Color cursorColor = null,
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Brightness? keyboardAppearance = null,
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EdgeInsets scrollPadding = null,
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DragStartBehavior dragStartBehavior = DragStartBehavior.start,
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ScrollPhysics scrollPhysics = null) : base(key: key) {
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D.assert(maxLines == null || maxLines > 0);
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D.assert(minLines == null || minLines > 0);
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D.assert(maxLines == null || minLines == null || maxLines >= minLines,
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() => "minLines can't be greater than maxLines");
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D.assert(!expands || (maxLines == null && minLines == null),
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() => "minLines and maxLines must be null when expands is true.");
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D.assert(maxLength == null || maxLength > 0);
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this.controller = controller;
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this.focusNode = focusNode;
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this.decoration = decoration ?? CupertinoTextFieldUtils._kDefaultRoundedBorderDecoration;
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this.padding = padding ?? EdgeInsets.all(6.0f);
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this.placeholder = placeholder;
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this.placeholderStyle = placeholderStyle ?? new TextStyle(
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fontWeight: FontWeight.w300,
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color: CupertinoTextFieldUtils._kInactiveTextColor
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);
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this.prefix = prefix;
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this.prefixMode = prefixMode;
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this.suffix = suffix;
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this.suffixMode = suffixMode;
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this.clearButtonMode = clearButtonMode;
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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.strutStyle = strutStyle;
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this.textAlign = textAlign;
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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.minLines = minLines;
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this.expands = expands;
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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.cursorRadius = cursorRadius ?? Radius.circular(2.0f);
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this.cursorColor = cursorColor;
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this.keyboardAppearance = keyboardAppearance;
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this.scrollPadding = scrollPadding ?? EdgeInsets.all(20.0f);
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this.dragStartBehavior = dragStartBehavior;
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this.scrollPhysics = scrollPhysics;
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this.keyboardType = keyboardType ?? (maxLines == 1 ? TextInputType.text : TextInputType.multiline);
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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 BoxDecoration decoration;
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public readonly EdgeInsets padding;
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public readonly string placeholder;
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public readonly TextStyle placeholderStyle;
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public readonly Widget prefix;
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public readonly OverlayVisibilityMode prefixMode;
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public readonly Widget suffix;
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public readonly OverlayVisibilityMode suffixMode;
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public readonly OverlayVisibilityMode clearButtonMode;
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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 StrutStyle strutStyle;
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public readonly TextAlign textAlign;
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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 readonly int? minLines;
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public readonly bool expands;
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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 DragStartBehavior dragStartBehavior;
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public readonly ScrollPhysics scrollPhysics;
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public override State createState() {
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return new _CupertinoTextFieldState();
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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", controller, defaultValue: null));
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properties.add(new DiagnosticsProperty<FocusNode>("focusNode", focusNode, defaultValue: null));
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properties.add(new DiagnosticsProperty<BoxDecoration>("decoration", decoration));
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properties.add(new DiagnosticsProperty<EdgeInsets>("padding", padding));
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properties.add(new StringProperty("placeholder", placeholder));
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properties.add(new DiagnosticsProperty<TextStyle>("placeholderStyle", placeholderStyle));
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properties.add(new DiagnosticsProperty<OverlayVisibilityMode>("prefix",
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prefix == null ? OverlayVisibilityMode.never : prefixMode));
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properties.add(new DiagnosticsProperty<OverlayVisibilityMode>("suffix",
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suffix == null ? OverlayVisibilityMode.never : suffixMode));
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properties.add(new DiagnosticsProperty<OverlayVisibilityMode>("clearButtonMode", clearButtonMode));
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properties.add(new DiagnosticsProperty<TextInputType>("keyboardType", keyboardType,
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defaultValue: TextInputType.text));
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properties.add(new DiagnosticsProperty<TextStyle>("style", style, defaultValue: null));
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properties.add(new DiagnosticsProperty<bool>("autofocus", autofocus, defaultValue: false));
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properties.add(new DiagnosticsProperty<bool>("obscureText", obscureText, defaultValue: false));
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properties.add(new DiagnosticsProperty<bool>("autocorrect", autocorrect, defaultValue: false));
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properties.add(new IntProperty("maxLines", maxLines, defaultValue: 1));
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properties.add(new IntProperty("minLines", minLines, defaultValue: null));
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properties.add(new DiagnosticsProperty<bool>("expands", expands, defaultValue: false));
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properties.add(new IntProperty("maxLength", maxLength, defaultValue: null));
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properties.add(new FlagProperty("maxLengthEnforced", value: maxLengthEnforced,
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ifTrue: "max length enforced"));
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properties.add(new DiagnosticsProperty<Color>("cursorColor", cursorColor, defaultValue: null));
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properties.add(
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new DiagnosticsProperty<ScrollPhysics>("scrollPhysics", scrollPhysics, defaultValue: null));
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}
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}
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class _CupertinoTextFieldState : AutomaticKeepAliveClientMixin<CupertinoTextField> {
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GlobalKey<EditableTextState> _editableTextKey = GlobalKey<EditableTextState>.key();
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TextEditingController _controller;
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TextEditingController _effectiveController {
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get { return widget.controller ?? _controller; }
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}
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FocusNode _focusNode;
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FocusNode _effectiveFocusNode {
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get { return widget.focusNode ?? _focusNode ?? (_focusNode = new FocusNode()); }
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}
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public override void initState() {
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base.initState();
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if (widget.controller == null) {
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_controller = new TextEditingController();
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_controller.addListener(updateKeepAlive);
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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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CupertinoTextField _oldWidget = (CupertinoTextField) oldWidget;
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if (widget.controller == null && _oldWidget.controller != null) {
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_controller = TextEditingController.fromValue(_oldWidget.controller.value);
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_controller.addListener(updateKeepAlive);
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}
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else if (widget.controller != null && _oldWidget.controller == null) {
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_controller = null;
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}
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bool isEnabled = widget.enabled ?? true;
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bool wasEnabled = _oldWidget.enabled ?? true;
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if (wasEnabled && !isEnabled) {
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_effectiveFocusNode.unfocus();
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}
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}
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public override void dispose() {
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_focusNode?.dispose();
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_controller?.removeListener(updateKeepAlive);
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base.dispose();
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}
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void _requestKeyboard() {
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_editableTextKey.currentState?.requestKeyboard();
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}
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RenderEditable _renderEditable {
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get { return _editableTextKey.currentState.renderEditable; }
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}
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void _handleTapDown(TapDownDetails details) {
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_renderEditable.handleTapDown(details);
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}
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void _handleSingleTapUp(TapUpDetails details) {
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_renderEditable.selectWordEdge(cause: SelectionChangedCause.tap);
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_requestKeyboard();
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}
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void _handleSingleLongTapStart(LongPressStartDetails details) {
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_renderEditable.selectPositionAt(
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from: details.globalPosition,
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cause: SelectionChangedCause.longPress
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);
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}
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void _handleSingleLongTapMoveUpdate(LongPressMoveUpdateDetails details) {
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_renderEditable.selectPositionAt(
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from: details.globalPosition,
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cause: SelectionChangedCause.longPress
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);
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}
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void _handleSingleLongTapEnd(LongPressEndDetails details) {
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_editableTextKey.currentState.showToolbar();
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}
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void _handleDoubleTapDown(TapDownDetails details) {
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_renderEditable.selectWord(cause: SelectionChangedCause.tap);
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_editableTextKey.currentState.showToolbar();
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}
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void _handleMouseDragSelectionStart(DragStartDetails details) {
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_renderEditable.selectPositionAt(
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from: details.globalPosition,
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cause: SelectionChangedCause.drag
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);
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}
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void _handleMouseDragSelectionUpdate(
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DragStartDetails startDetails,
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DragUpdateDetails updateDetails
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) {
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_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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}
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void _handleMouseDragSelectionEnd(DragEndDetails details) {
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_requestKeyboard();
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}
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void _handleSelectionChanged(TextSelection selection, SelectionChangedCause cause) {
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if (cause == SelectionChangedCause.longPress) {
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_editableTextKey.currentState?.bringIntoView(selection.basePos);
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}
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}
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protected override bool wantKeepAlive {
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get { return _controller?.text?.isNotEmpty() == true; }
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}
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bool _shouldShowAttachment(
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OverlayVisibilityMode attachment,
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bool hasText
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) {
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switch (attachment) {
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case OverlayVisibilityMode.never:
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return false;
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case OverlayVisibilityMode.always:
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return true;
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case OverlayVisibilityMode.editing:
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return hasText;
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case OverlayVisibilityMode.notEditing:
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return !hasText;
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}
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D.assert(false);
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return false;
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}
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bool _showPrefixWidget(TextEditingValue text) {
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return widget.prefix != null && _shouldShowAttachment(
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attachment: widget.prefixMode,
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hasText: text.text.isNotEmpty()
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);
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}
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bool _showSuffixWidget(TextEditingValue text) {
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return widget.suffix != null && _shouldShowAttachment(
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attachment: widget.suffixMode,
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hasText: text.text.isNotEmpty()
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);
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}
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bool _showClearButton(TextEditingValue text) {
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return _shouldShowAttachment(
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attachment: widget.clearButtonMode,
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hasText: text.text.isNotEmpty()
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);
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}
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Widget _addTextDependentAttachments(Widget editableText, TextStyle textStyle, TextStyle placeholderStyle) {
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D.assert(editableText != null);
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D.assert(textStyle != null);
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D.assert(placeholderStyle != null);
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if (widget.placeholder == null &&
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widget.clearButtonMode == OverlayVisibilityMode.never &&
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widget.prefix == null &&
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widget.suffix == null) {
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return editableText;
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}
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return new ValueListenableBuilder<TextEditingValue>(
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valueListenable: _effectiveController,
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child: editableText,
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builder: (BuildContext context, TextEditingValue text, Widget child) => {
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List<Widget> rowChildren = new List<Widget>();
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if (_showPrefixWidget(text)) {
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rowChildren.Add(widget.prefix);
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}
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List<Widget> stackChildren = new List<Widget>();
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if (widget.placeholder != null && text.text.isEmpty()) {
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stackChildren.Add(
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new Padding(
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padding: widget.padding,
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child: new Text(
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widget.placeholder,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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style: placeholderStyle
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)
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)
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);
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}
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stackChildren.Add(child);
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rowChildren.Add(
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new Expanded
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(child: new Stack
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(children: stackChildren)));
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if (_showSuffixWidget(text)) {
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rowChildren.Add(widget.suffix);
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}
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else if (_showClearButton(text)) {
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rowChildren.Add(
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new GestureDetector(
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onTap: widget.enabled ?? true
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? () => {
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bool textChanged = _effectiveController.text.isNotEmpty();
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_effectiveController.clear();
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if (widget.onChanged != null && textChanged) {
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widget.onChanged(_effectiveController.text);
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}
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}
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: (GestureTapCallback) null,
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child: new Padding(
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padding: EdgeInsets.symmetric(horizontal: 6.0f),
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child: new Icon(
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CupertinoIcons.clear_thick_circled,
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size: 18.0f,
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color: CupertinoTextFieldUtils._kInactiveTextColor
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)
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)
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)
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);
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}
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return new Row(children: rowChildren);
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}
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);
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}
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public override Widget build(BuildContext context) {
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base.build(context);
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TextEditingController controller = _effectiveController;
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List<TextInputFormatter> formatters = widget.inputFormatters ?? new List<TextInputFormatter>();
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bool enabled = widget.enabled ?? true;
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Offset cursorOffset =
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new Offset(
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CupertinoTextFieldUtils._iOSHorizontalCursorOffsetPixels / MediaQuery.of(context).devicePixelRatio,
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0);
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if (widget.maxLength != null && widget.maxLengthEnforced) {
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formatters.Add(new LengthLimitingTextInputFormatter(widget.maxLength));
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}
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CupertinoThemeData themeData = CupertinoTheme.of(context);
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TextStyle textStyle = themeData.textTheme.textStyle.merge(widget.style);
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TextStyle placeholderStyle = textStyle.merge(widget.placeholderStyle);
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Brightness keyboardAppearance = widget.keyboardAppearance ?? themeData.brightness;
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Color cursorColor = widget.cursorColor ?? themeData.primaryColor;
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Widget paddedEditable = new Padding(
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padding: widget.padding,
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child: new RepaintBoundary(
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child: new EditableText(
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key: _editableTextKey,
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controller: controller,
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focusNode: _effectiveFocusNode,
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keyboardType: widget.keyboardType,
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textInputAction: widget.textInputAction,
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textCapitalization: widget.textCapitalization,
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style: textStyle,
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strutStyle: widget.strutStyle,
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textAlign: widget.textAlign,
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autofocus: widget.autofocus,
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obscureText: widget.obscureText,
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autocorrect: widget.autocorrect,
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maxLines: widget.maxLines,
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minLines: widget.minLines,
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expands: widget.expands,
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selectionColor: CupertinoTextFieldUtils._kSelectionHighlightColor,
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selectionControls: CupertinoTextSelectionUtils.cupertinoTextSelectionControls,
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onChanged: widget.onChanged,
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onSelectionChanged: _handleSelectionChanged,
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onEditingComplete: widget.onEditingComplete,
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onSubmitted: widget.onSubmitted,
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inputFormatters: formatters,
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rendererIgnoresPointer: true,
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cursorWidth: widget.cursorWidth,
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cursorRadius: widget.cursorRadius,
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cursorColor: cursorColor,
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cursorOpacityAnimates: true,
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cursorOffset: cursorOffset,
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paintCursorAboveText: true,
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backgroundCursorColor: CupertinoColors.inactiveGray,
|
|
scrollPadding: widget.scrollPadding,
|
|
keyboardAppearance: keyboardAppearance,
|
|
dragStartBehavior: widget.dragStartBehavior,
|
|
scrollPhysics: widget.scrollPhysics
|
|
)
|
|
)
|
|
);
|
|
|
|
return new IgnorePointer(
|
|
ignoring: !enabled,
|
|
child: new Container(
|
|
decoration: widget.decoration,
|
|
child: new Container(
|
|
color: enabled
|
|
? null
|
|
: CupertinoTheme.of(context).brightness == Brightness.light
|
|
? CupertinoTextFieldUtils._kDisabledBackground
|
|
: CupertinoColors.darkBackgroundGray,
|
|
child: new TextSelectionGestureDetector(
|
|
onTapDown: _handleTapDown,
|
|
onSingleTapUp: _handleSingleTapUp,
|
|
onSingleLongTapStart: _handleSingleLongTapStart,
|
|
onSingleLongTapMoveUpdate: _handleSingleLongTapMoveUpdate,
|
|
onSingleLongTapEnd: _handleSingleLongTapEnd,
|
|
onDoubleTapDown: _handleDoubleTapDown,
|
|
onDragSelectionStart: _handleMouseDragSelectionStart,
|
|
onDragSelectionUpdate: _handleMouseDragSelectionUpdate,
|
|
onDragSelectionEnd: _handleMouseDragSelectionEnd,
|
|
behavior: HitTestBehavior.translucent,
|
|
child: _addTextDependentAttachments(paddedEditable, textStyle, placeholderStyle)
|
|
)
|
|
)
|
|
)
|
|
);
|
|
}
|
|
}
|
|
}
|