Mobile: Moved tags to separate screen to avoid slow down when having many tags

ReactNativeClient/lib/components/screens/tags.js

@@ -0,0 +1,130 @@
+const React = require('react'); const Component = React.Component;
+const { AppState, View, Button, Text, FlatList, StyleSheet, TouchableOpacity } = require('react-native');
+const { stateUtils } = require('lib/reducer.js');
+const { connect } = require('react-redux');
+const { reg } = require('lib/registry.js');
+const { NoteList } = require('lib/components/note-list.js');
+const Folder = require('lib/models/Folder.js');
+const Tag = require('lib/models/Tag.js');
+const Note = require('lib/models/Note.js');
+const Setting = require('lib/models/Setting.js');
+const { themeStyle } = require('lib/components/global-style.js');
+const { ScreenHeader } = require('lib/components/screen-header.js');
+const { MenuOption } = require('react-native-popup-menu');
+const { _ } = require('lib/locale.js');
+const { ActionButton } = require('lib/components/action-button.js');
+const { dialogs } = require('lib/dialogs.js');
+const DialogBox = require('react-native-dialogbox').default;
+const { BaseScreenComponent } = require('lib/components/base-screen.js');
+
+class TagsScreenComponent extends BaseScreenComponent {
+	
+	static navigationOptions(options) {
+		return { header: null };
+	}
+
+	constructor() {
+		super();
+
+		this.state = {
+			tags: [],
+		};
+
+		this.tagList_renderItem = this.tagList_renderItem.bind(this);
+		this.tagList_keyExtractor = this.tagList_keyExtractor.bind(this);
+		this.tagItem_press = this.tagItem_press.bind(this);
+	}
+
+	styles() {
+		if (this.styles_) return this.styles_;
+
+		const theme = themeStyle(this.props.theme);
+
+		this.styles_ = StyleSheet.create({
+			listItem: {
+				flexDirection: 'row',
+				borderBottomWidth: 1,
+				borderBottomColor: theme.dividerColor,
+				alignItems: 'flex-start',
+				paddingLeft: theme.marginLeft,
+				paddingRight: theme.marginRight,
+				paddingTop: theme.itemMarginTop,
+				paddingBottom: theme.itemMarginBottom,
+			},
+			listItemText: {
+				flex: 1,
+				color: theme.color,
+				fontSize: theme.fontSize,
+			},
+		});
+
+		return this.styles_;
+	}
+
+	tagItem_press(event) {
+		this.props.dispatch({ type: 'SIDE_MENU_CLOSE' });
+
+		this.props.dispatch({
+			type: 'NAV_GO',
+			routeName: 'Notes',
+			tagId: event.id,
+		});
+	}
+
+	tagList_renderItem(event) {
+		const tag = event.item;
+		return (
+			<TouchableOpacity onPress={() => { this.tagItem_press({ id: tag.id }) }}>
+				<View style={ this.styles().listItem }>
+					<Text style={this.styles().listItemText}>{tag.title}</Text>
+				</View>
+			</TouchableOpacity>
+		);
+	}
+
+	tagList_keyExtractor(item, index) {
+		return item.id;
+	}
+
+	async componentDidMount() {
+		const tags = await Tag.allWithNotes();
+		tags.sort((a, b) => {
+			return a.title.toLowerCase() < b.title.toLowerCase() ? -1 : +1;
+		});
+		this.setState({ tags: tags });
+	}
+
+	render() {
+		const theme = themeStyle(this.props.theme);
+
+		let rootStyle = {
+			flex: 1,
+			backgroundColor: theme.backgroundColor,
+		}
+
+		return (
+			<View style={rootStyle}>
+				<ScreenHeader
+					title={_('Tags')}
+					parentComponent={this}
+					showSearchButton={false}
+				/>
+				<FlatList style={{flex:1}}
+					data={this.state.tags}
+					renderItem={this.tagList_renderItem}
+					keyExtractor={this.tagList_keyExtractor}
+				/>
+			</View>
+		);
+	}
+}
+
+const TagsScreen = connect(
+	(state) => {
+		return {
+			theme: state.settings.theme,
+		};
+	}
+)(TagsScreenComponent)
+
+module.exports = { TagsScreen };