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import { useState, useEffect } from 'react';
import { Form } from 'react-bootstrap';
function DropdownOption({ label, isSelected, onClickFunc, testid, rawKey, isGhost }) {
const [isHovered, setIsHovered] = useState(false);
const handleMouseEnter = () => {
setIsHovered(true);
};
const handleMouseLeave = () => {
setIsHovered(false);
};
// Stryker disable all
const divStyle = {
backgroundColor: isHovered ? 'lightgreen' : 'white',
transition: 'background-color 0.25s ease',
'paddingLeft': '2px',
'paddingRight': '2px',
'cursor': 'pointer',
};
// Stryker restore all
let mainOption;
if (!isSelected) {
let altStyle = divStyle;
if(isGhost){
altStyle['backgroundColor'] = 'lightgreen';
}
mainOption = (
<div
key={rawKey}
data-testid={testid}
style={altStyle}
onMouseEnter={handleMouseEnter}
onMouseLeave={handleMouseLeave}
onClick={onClickFunc}
>
{label}
</div>
);
} else {
// Stryker disable all
let altStyle = divStyle;
altStyle['backgroundColor'] = 'green';
altStyle['color'] = 'white';
// Stryker restore all
mainOption = (
<div key={rawKey} data-testid={testid} style={altStyle} onClick={onClickFunc}>
{label}
</div>
);
}
return <div>{mainOption}</div>;
}
export default function OurAddDropdownForm({
content,
label,
basis = null,
testId = 'testid',
autocomplete=true,
onChangeFunc = null,
}) {
// Stryker disable all
content.sort((a, b) => {
if (a.label < b.label) {
return -1;
}
if (a.label > b.label) {
return 1;
}
return 0;
});
// Stryker restore all
const [filteredContent, changeFilteredContent] = useState(content);
// Stryker disable all
useEffect(() => {
const fixedContent = [];
for (let i = 0; i < content.length; ++i) {
if (!autocomplete || !basis || content[i].label.startsWith(basis.label)) {
fixedContent.push(content[i]);
}
}
changeFilteredContent(fixedContent);
if(fixedContent.length > 0){
changeGhostContent(fixedContent[0]);
}
}, [content, basis, autocomplete]);
// Stryker restore all
const [selectedContent, changeSelectedContent] = useState(basis);
const [userTypedContent, changeUserTypContent] = useState(basis !== null ? basis.label : "");
const [showingDropdown, changeShowingDropdown] = useState(false);
const [validationStyle, changeValidationStyle] = useState(autocomplete ? {} : {cursor: 'pointer', 'caretColor': 'transparent'});
// the user can press enter to autocomplete
// Stryker disable next-line all : there might be a good test for this but since showingDropdown doesn't render anything on fixedContent.length === 0 this might be harder to test
const [ghostContent, changeGhostContent] = useState(filteredContent.length > 0 ? filteredContent[0] : null);
// Stryker disable all
const optionWrapperStyle = {
position: 'absolute',
left: '26px',
'marginTop': '4px',
'borderRadius': '2px',
'overflowY': 'scroll',
height: '200px',
};
// Stryker restore all
let count = 0;
const filterPrefix = (prefix) => {
// filter the dropdown to only have the matching prefix options
const prefixedContent = [];
let isValidSelection = false;
let overflow = true;
let first = true;
for(let i = 0; i < content.length; ++i){
if(content[i].label.startsWith(prefix)){
overflow = false;
// the first element will be "semihovered" i.e. the user can press enter
// autofill the text automatically
if(first){
changeGhostContent(content[i]);
first = false;
}
// a direct match is found
// NOTE: THIS ASSUMES THAT ALL CONTENT IS UNIQUE
if(content[i].label === prefix){
changeSelectedContent(content[i]);
isValidSelection = true;
}
prefixedContent.push(content[i]);
}
}
// if there was no direct match then there is no selectedContent
if(!isValidSelection){
changeSelectedContent(null);
}
// no matches or prefix matches
if(overflow){
changeValidationStyle({color:"red"});
changeGhostContent(null);
} else {
changeValidationStyle({});
}
changeFilteredContent(prefixedContent);
};
const internalOnChange = (event) => {
if(autocomplete){
// grab the userText
const newSelectedContent = event.target.value;
changeUserTypContent(newSelectedContent);
filterPrefix(newSelectedContent);
}
if (onChangeFunc) {
onChangeFunc(event);
}
};
const fillGhost = (event) => {
if(event.key === "Enter" && ghostContent !== null) {
changeUserTypContent(ghostContent.label);
filterPrefix(ghostContent.label);
changeShowingDropdown(false);
} else {
changeShowingDropdown(true);
}
};
return (
<div>
{label}
{content.length !== 0 && (
<div>
<Form.Control
data-testid={`${testId}-test-dropdown-form`}
type="text"
value={autocomplete ? userTypedContent : (selectedContent !== null ? selectedContent.label : "") }
onChange={internalOnChange}
style={validationStyle}
onFocus={() => {
changeShowingDropdown(true);
}}
onClick={() => {
changeShowingDropdown(true);
}}
onKeyDown={autocomplete ? fillGhost : null}
/>
{showingDropdown && (
<div data-testid = {`${testId}-wrapper`} style={optionWrapperStyle}>
{filteredContent.map((obj) => {
const key = obj.key;
const innerLabel = obj.label;
const select = () => {
changeSelectedContent(obj);
if(autocomplete){
changeUserTypContent(innerLabel);
changeGhostContent(obj);
filterPrefix(innerLabel);
}
changeShowingDropdown(false);
};
return (
<DropdownOption
testid={`${testId}-dropdown-form-option-${count++}`}
label={innerLabel}
isSelected={selectedContent && key === selectedContent.key}
isGhost={autocomplete ? (key === ghostContent.key) : false}
rawKey = {key}
// Stryker disable next-line all
key ={`${key}-dropdown-option`}
onClickFunc={select}
></DropdownOption>
);
})}
</div>
)}
</div>
)}
{content.length === 0 && (
<div>
<Form.Control
data-testid={`${testId}-test-dropdown-form`}
type="text"
disabled={true}
style={{ cursor: 'not-allowed' }}
/>
</div>
)}
</div>
);
}
|