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[Widget] Add Material Search Widget
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‎Runtime/material/search.cs

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using System;
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using System.Collections.Generic;
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using RSG;
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using Unity.UIWidgets.animation;
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using Unity.UIWidgets.foundation;
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using Unity.UIWidgets.service;
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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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namespace Unity.UIWidgets.material {
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public class SearchUtils {
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public static IPromise<object> showSearch(
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BuildContext context,
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SearchDelegate del,
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string query = ""
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) {
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D.assert(del != null);
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D.assert(context != null);
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del.query = query ?? del.query;
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del._currentBody = _SearchBody.suggestions;
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return Navigator.of(context).push(new _SearchPageRoute(
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del: del
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));
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}
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}
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public abstract class SearchDelegate {
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public abstract Widget buildSuggestions(BuildContext context);
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public abstract Widget buildResults(BuildContext context);
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public abstract Widget buildLeading(BuildContext context);
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public abstract List<Widget> buildActions(BuildContext context);
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public virtual ThemeData appBarTheme(BuildContext context) {
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D.assert(context != null);
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ThemeData theme = Theme.of(context);
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D.assert(theme != null);
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return theme.copyWith(
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primaryColor: Colors.white,
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primaryIconTheme: theme.primaryIconTheme.copyWith(color: Colors.grey),
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primaryColorBrightness: Brightness.light,
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primaryTextTheme: theme.textTheme
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);
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}
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public virtual string query {
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get { return this._queryTextController.text; }
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set {
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D.assert(this.query != null);
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this._queryTextController.text = value;
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}
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}
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public virtual void showResults(BuildContext context) {
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this._focusNode.unfocus();
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this._currentBody = _SearchBody.results;
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}
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public virtual void showSuggestions(BuildContext context) {
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FocusScope.of(context).requestFocus(this._focusNode);
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this._currentBody = _SearchBody.suggestions;
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}
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public virtual void close(BuildContext context, object result) {
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this._currentBody = null;
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this._focusNode.unfocus();
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var state = Navigator.of(context);
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state.popUntil((Route route) => route == this._route);
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state.pop(result);
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}
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public virtual Animation<float> transitionAnimation {
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get { return this._proxyAnimation; }
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}
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readonly internal FocusNode _focusNode = new FocusNode();
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readonly internal TextEditingController _queryTextController = new TextEditingController();
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readonly internal ProxyAnimation _proxyAnimation = new ProxyAnimation(Animations.kAlwaysDismissedAnimation);
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readonly internal ValueNotifier<_SearchBody?> _currentBodyNotifier = new ValueNotifier<_SearchBody?>(null);
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internal _SearchBody? _currentBody {
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get { return this._currentBodyNotifier.value; }
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set { this._currentBodyNotifier.value = value; }
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}
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internal _SearchPageRoute _route;
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}
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enum _SearchBody {
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suggestions,
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results
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}
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class _SearchPageRoute : PageRoute {
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public _SearchPageRoute(SearchDelegate del) {
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D.assert(del != null);
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D.assert(del._route == null,
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() => $"The {this.del.GetType()} instance is currently used by another active " +
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"search. Please close that search by calling close() on the SearchDelegate " +
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"before openening another search with the same delegate instance."
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);
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this.del = del;
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this.del._route = this;
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}
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public readonly SearchDelegate del;
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public override Color barrierColor {
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get { return null; }
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}
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public override TimeSpan transitionDuration {
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get { return new TimeSpan(0, 0, 0, 0, 300); }
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}
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public override bool maintainState {
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get { return false; }
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}
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public override Widget buildTransitions(
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BuildContext context,
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Animation<float> animation,
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Animation<float> secondaryAnimation,
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Widget child
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) {
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return new FadeTransition(
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opacity: animation,
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child: child
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);
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}
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public override Animation<float> createAnimation() {
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Animation<float> animation = base.createAnimation();
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this.del._proxyAnimation.parent = animation;
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return animation;
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}
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public override Widget buildPage(
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BuildContext context,
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Animation<float> animation,
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Animation<float> secondaryAnimation
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) {
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return new _SearchPage(
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del: this.del,
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animation: animation
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);
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}
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protected internal override void didComplete(object result) {
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base.didComplete(result);
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D.assert(this.del._route == this);
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this.del._route = null;
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this.del._currentBody = null;
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}
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}
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class _SearchPage : StatefulWidget {
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public _SearchPage(
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SearchDelegate del,
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Animation<float> animation
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) {
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this.del = del;
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this.animation = animation;
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}
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public readonly SearchDelegate del;
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public readonly Animation<float> animation;
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public override State createState() {
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return new _SearchPageState();
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}
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}
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class _SearchPageState : State<_SearchPage> {
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public override void initState() {
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base.initState();
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this.queryTextController.addListener(this._onQueryChanged);
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this.widget.animation.addStatusListener(this._onAnimationStatusChanged);
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this.widget.del._currentBodyNotifier.addListener(this._onSearchBodyChanged);
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this.widget.del._focusNode.addListener(this._onFocusChanged);
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}
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public override void dispose() {
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base.dispose();
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this.queryTextController.removeListener(this._onQueryChanged);
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this.widget.animation.removeStatusListener(this._onAnimationStatusChanged);
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this.widget.del._currentBodyNotifier.removeListener(this._onSearchBodyChanged);
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this.widget.del._focusNode.removeListener(this._onFocusChanged);
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}
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void _onAnimationStatusChanged(AnimationStatus status) {
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if (status != AnimationStatus.completed) {
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return;
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}
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this.widget.animation.removeStatusListener(this._onAnimationStatusChanged);
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if (this.widget.del._currentBody == _SearchBody.suggestions) {
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FocusScope.of(this.context).requestFocus(this.widget.del._focusNode);
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}
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}
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void _onFocusChanged() {
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if (this.widget.del._focusNode.hasFocus && this.widget.del._currentBody != _SearchBody.suggestions) {
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this.widget.del.showSuggestions(this.context);
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}
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}
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void _onQueryChanged() {
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this.setState(() => { });
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}
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void _onSearchBodyChanged() {
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this.setState(() => { });
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}
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public override Widget build(BuildContext context) {
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MaterialD.debugCheckHasMaterialLocalizations(context);
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ThemeData theme = this.widget.del.appBarTheme(context);
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string searchFieldLabel = MaterialLocalizations.of(context).searchFieldLabel;
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Widget body = null;
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switch (this.widget.del._currentBody) {
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case _SearchBody.suggestions:
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body = new KeyedSubtree(
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key: new ValueKey<_SearchBody>(_SearchBody.suggestions),
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child: this.widget.del.buildSuggestions(context)
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);
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break;
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case _SearchBody.results:
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body = new KeyedSubtree(
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key: new ValueKey<_SearchBody>(_SearchBody.results),
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child: this.widget.del.buildResults(context)
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);
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break;
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}
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string routeName;
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switch (Theme.of(this.context).platform) {
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case RuntimePlatform.IPhonePlayer:
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routeName = "";
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break;
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case RuntimePlatform.Android:
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routeName = searchFieldLabel;
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break;
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}
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return new Scaffold(
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appBar: new AppBar(
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backgroundColor: theme.primaryColor,
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iconTheme: theme.primaryIconTheme,
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textTheme: theme.primaryTextTheme,
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brightness: theme.primaryColorBrightness,
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leading: this.widget.del.buildLeading(context),
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title: new TextField(
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controller: this.queryTextController,
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focusNode: this.widget.del._focusNode,
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style: theme.textTheme.title,
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textInputAction: TextInputAction.search,
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onSubmitted: (string _) => { this.widget.del.showResults(context); },
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decoration: new InputDecoration(
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border: InputBorder.none,
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hintText: searchFieldLabel
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)
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),
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actions: this.widget.del.buildActions(context)
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),
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body: new AnimatedSwitcher(
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duration: new TimeSpan(0, 0, 0, 0, 300),
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child: body
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)
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);
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}
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TextEditingController queryTextController {
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get { return this.widget.del._queryTextController; }
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}
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}
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}

‎Runtime/material/search.cs.meta

Lines changed: 11 additions & 0 deletions
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‎Runtime/widgets/pages.cs

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@@ -7,6 +7,8 @@ namespace Unity.UIWidgets.widgets {
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public abstract class PageRoute : ModalRoute {
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public readonly bool fullscreenDialog;
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public PageRoute() {}
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public PageRoute(RouteSettings settings, bool fullscreenDialog = false) : base(settings) {
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this.fullscreenDialog = fullscreenDialog;
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}

‎Runtime/widgets/routes.cs

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@@ -471,8 +471,9 @@ public override Widget build(BuildContext context) {
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}
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public abstract class ModalRoute : LocalHistoryRouteTransitionRoute {
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protected ModalRoute(RouteSettings settings) : base(settings) {
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}
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protected ModalRoute() {}
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protected ModalRoute(RouteSettings settings) : base(settings) { }
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public static Color _kTransparent = new Color(0x00000000);
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