@swimlane/ngx-datatable
Version:
ngx-datatable is an Angular table grid component for presenting large and complex data.
96 lines • 8.02 kB
JavaScript
/**
* Always returns the empty string ''
*/
export function emptyStringGetter() {
return '';
}
/**
* Returns the appropriate getter function for this kind of prop.
* If prop == null, returns the emptyStringGetter.
*/
export function getterForProp(prop) {
if (prop == null) {
return emptyStringGetter;
}
if (typeof prop === 'number') {
return numericIndexGetter;
}
else {
// deep or simple
if (prop.indexOf('.') !== -1) {
return deepValueGetter;
}
else {
return shallowValueGetter;
}
}
}
/**
* Returns the value at this numeric index.
* @param row array of values
* @param index numeric index
* @returns any or '' if invalid index
*/
export function numericIndexGetter(row, index) {
if (row == null) {
return '';
}
// mimic behavior of deepValueGetter
if (!row || index == null) {
return row;
}
const value = row[index];
if (value == null) {
return '';
}
return value;
}
/**
* Returns the value of a field.
* (more efficient than deepValueGetter)
* @param obj object containing the field
* @param fieldName field name string
*/
export function shallowValueGetter(obj, fieldName) {
if (obj == null) {
return '';
}
if (!obj || !fieldName) {
return obj;
}
const value = obj[fieldName];
if (value == null) {
return '';
}
return value;
}
/**
* Returns a deep object given a string. zoo['animal.type']
*/
export function deepValueGetter(obj, path) {
if (obj == null) {
return '';
}
if (!obj || !path) {
return obj;
}
// check if path matches a root-level field
// { "a.b.c": 123 }
let current = obj[path];
if (current !== undefined) {
return current;
}
current = obj;
const split = path.split('.');
if (split.length) {
for (let i = 0; i < split.length; i++) {
current = current[split[i]];
// if found undefined, return empty string
if (current === undefined || current === null) {
return '';
}
}
}
return current;
}
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