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import * as React from 'react';
import { Button, Component, Styles, Text, Types, UserInterface, View } from 'reactxp';
import { colors } from '../../config.json';
import styles from './AppButtonStyles';
import ImageView from './ImageView';
const ButtonContext = React.createContext({
textAdjustment: 0,
textRef: React.createRef<PrivateLabel>(),
});
interface ILabelProps {
children?: React.ReactText;
}
interface IPrivateLabelProps {
textAdjustment: number;
children?: React.ReactText;
}
class PrivateLabel extends Component<IPrivateLabelProps> {
public render() {
const { textAdjustment, children } = this.props;
const textAdjustmentStyle = Styles.createViewStyle(
{
paddingRight: textAdjustment > 0 ? textAdjustment : 0,
paddingLeft: textAdjustment < 0 ? Math.abs(textAdjustment) : 0,
},
false,
);
return (
<View style={[styles.labelContainer, textAdjustmentStyle]}>
<Text style={styles.label}>{children}</Text>
</View>
);
}
}
export class Label extends Component<ILabelProps> {
public render() {
return (
<ButtonContext.Consumer>
{(context) => (
<PrivateLabel ref={context.textRef} textAdjustment={context.textAdjustment}>
{this.props.children}
</PrivateLabel>
)}
</ButtonContext.Consumer>
);
}
}
interface IIconProps {
source: string;
width?: number;
height?: number;
}
export class Icon extends Component<IIconProps> {
public render() {
return (
<ImageView
source={this.props.source}
width={this.props.width}
height={this.props.height}
tintColor={colors.white}
/>
);
}
}
interface IProps {
children?: React.ReactNode;
style?: Types.ButtonStyleRuleSet;
disabled?: boolean;
onPress?: () => void;
}
interface IState {
hovered: boolean;
textAdjustment: number;
}
class BaseButton extends Component<IProps, IState> {
public state: IState = {
hovered: false,
textAdjustment: 0,
};
private containerRef = React.createRef<View>();
private textViewRef = React.createRef<PrivateLabel>();
public componentDidMount() {
this.forceUpdateTextAdjustment();
}
public render() {
const { children, style, ...otherProps } = this.props;
return (
<ButtonContext.Provider
value={{
textAdjustment: this.state.textAdjustment,
textRef: this.textViewRef,
}}>
<Button
{...otherProps}
style={[styles.common, this.backgroundStyle(), style]}
onHoverStart={this.onHoverStart}
onHoverEnd={this.onHoverEnd}>
<View style={styles.content} ref={this.containerRef} onLayout={this.onLayout}>
{React.Children.map(children, (child) =>
typeof child === 'string' ? <Label>{child as string}</Label> : child,
)}
</View>
</Button>
</ButtonContext.Provider>
);
}
protected backgroundStyle = (): Types.ButtonStyleRuleSet => {
throw new Error('Implement backgroundStyle in subclasses.');
};
protected onHoverStart = () => (!this.props.disabled ? this.setState({ hovered: true }) : null);
protected onHoverEnd = () => (!this.props.disabled ? this.setState({ hovered: false }) : null);
private async forceUpdateTextAdjustment() {
const containerView = this.containerRef.current;
if (containerView) {
const containerLayout = await UserInterface.measureLayoutRelativeToAncestor(
containerView,
this,
);
this.updateTextAdjustment(containerLayout);
}
}
private async updateTextAdjustment(containerLayout: Types.LayoutInfo) {
const labelView = this.textViewRef.current;
if (labelView) {
// calculate the title layout frame
const labelLayout = await UserInterface.measureLayoutRelativeToAncestor(labelView, this);
// calculate the remaining space at the right hand side
const trailingSpace = containerLayout.width - (labelLayout.x + labelLayout.width);
// calculate text adjustment
const textAdjustment = labelLayout.x - trailingSpace;
// re-render the view with the new text adjustment if it changed
if (this.state.textAdjustment !== textAdjustment) {
this.setState({ textAdjustment });
}
}
}
private onLayout = async (containerLayout: Types.ViewOnLayoutEvent) => {
this.updateTextAdjustment(containerLayout);
};
}
export class RedButton extends BaseButton {
protected backgroundStyle = () => (this.state.hovered ? styles.redHover : styles.red);
}
export class GreenButton extends BaseButton {
protected backgroundStyle = () => (this.state.hovered ? styles.greenHover : styles.green);
}
export class BlueButton extends BaseButton {
protected backgroundStyle = () => (this.state.hovered ? styles.blueHover : styles.blue);
}
export class TransparentButton extends BaseButton {
protected backgroundStyle = () =>
this.state.hovered ? styles.transparentHover : styles.transparent;
}
export class RedTransparentButton extends BaseButton {
protected backgroundStyle = () =>
this.state.hovered ? styles.redTransparentHover : styles.redTransparent;
}
|
