Demos
Grid(React)
Filtering / Searching
Excel-like Filter
Custom Filter Operators

Custom Filter Operators (React)

The FlexGridFilter class is localizable, and you can take advantage of that not only to customize the strings displayed in the UI, but also which filter conditions to show for each data type.

In this example, we customized the list of operators by assigning custom arrays to the filter's stringOperators, numberOperators, dateOperators, and booleanOperators. Open the filter drop-downs to see the effect.

Learn about FlexGrid | Custom Filter Operators Documentation | FlexGrid API Reference

This example uses React.

JavaScript
Angular
Vue
React
app.jsx
index.html
app.css
data.jsx
Copy to CodeMine
import 'bootstrap.css';
import '@mescius/wijmo.styles/wijmo.css';
import ReactDOM from 'react-dom/client';
import React, { useEffect } from 'react';
import * as wjGrid from '@mescius/wijmo.react.grid';
import * as wjcCore from '@mescius/wijmo';
import * as wjFilter from '@mescius/wijmo.react.grid.filter';
import * as wjcGridFilter from '@mescius/wijmo.grid.filter';
import './app.css';
import { data } from './data';
function App() {
    const customizeFilterConditions = () => {
        let filter = wjcCore.culture.FlexGridFilter, Operator = wjcGridFilter.Operator;
        filter.stringOperators = [
            { name: "(doesn't matter)", op: null },
            { name: "Is", op: Operator.EQ },
            { name: "Is not", op: Operator.NE },
            { name: "Is bigger than", op: Operator.GT },
            { name: "Is smaller than", op: Operator.LT } // added
        ];
        filter.numberOperators = [
            { name: "(doesn't matter)", op: null },
            { name: "Is", op: Operator.EQ },
            { name: "Is not", op: Operator.NE },
            { name: "Is bigger than", op: Operator.GT },
            { name: "Is smaller than", op: Operator.LT }
        ];
        filter.dateOperators = [
            { name: "(doesn't matter)", op: null },
            { name: "Is", op: Operator.EQ },
            { name: "Is earlier than", op: Operator.LT },
            { name: "Is later than", op: Operator.GT }
        ];
        filter.booleanOperators = [
            { name: "(not set)", op: null },
            { name: "Is", op: Operator.EQ },
            { name: "Is not", op: Operator.NE }
        ];
    };
    useEffect(() => {
        customizeFilterConditions();
    }, []);
    return (<div className="container-fluid">
      <wjGrid.FlexGrid itemsSource={data}>
        <wjFilter.FlexGridFilter defaultFilterType="Condition"/>
      </wjGrid.FlexGrid>
    </div>);
}
const container = document.getElementById('app');
if (container) {
    const root = ReactDOM.createRoot(container);
    root.render(<App />);
}
import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useEffect } from 'react'; import * as wjGrid from '@mescius/wijmo.react.grid'; import * as wjcCore from '@mescius/wijmo'; import * as wjFilter from '@mescius/wijmo.react.grid.filter'; import * as wjcGridFilter from '@mescius/wijmo.grid.filter'; import './app.css'; import { data } from './data'; function App() { const customizeFilterConditions = () => { let filter = wjcCore.culture.FlexGridFilter, Operator = wjcGridFilter.Operator; filter.stringOperators = [ { name: "(doesn't matter)", op: null }, { name: "Is", op: Operator.EQ }, { name: "Is not", op: Operator.NE }, { name: "Is bigger than", op: Operator.GT }, { name: "Is smaller than", op: Operator.LT } // added ]; filter.numberOperators = [ { name: "(doesn't matter)", op: null }, { name: "Is", op: Operator.EQ }, { name: "Is not", op: Operator.NE }, { name: "Is bigger than", op: Operator.GT }, { name: "Is smaller than", op: Operator.LT } ]; filter.dateOperators = [ { name: "(doesn't matter)", op: null }, { name: "Is", op: Operator.EQ }, { name: "Is earlier than", op: Operator.LT }, { name: "Is later than", op: Operator.GT } ]; filter.booleanOperators = [ { name: "(not set)", op: null }, { name: "Is", op: Operator.EQ }, { name: "Is not", op: Operator.NE } ]; }; useEffect(() => { customizeFilterConditions(); }, []); return (<div className="container-fluid"> <wjGrid.FlexGrid itemsSource={data}> <wjFilter.FlexGridFilter defaultFilterType="Condition"/> </wjGrid.FlexGrid> </div>); } const container = document.getElementById('app'); if (container) { const root = ReactDOM.createRoot(container); root.render(<App />); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo Wijmo FlexGrid Custom Filter Icons</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.40/system.src.js" integrity="sha512-G6mEj6h18+m3MvzdviSDfPle/TfH0//cXcB33AKlNR/Rha0yQsKefDZKRTkIZos97HEGq2JMV1RT5ybMoQ3WsQ==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html>
.wj-flexgrid { max-height: 250px; margin: 10px 0; } /* show images on filtered columns */ .custom-icons .wj-glyph-filter { background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAABKUlEQVQ4ja2QP0vDQBiHf/cndzQhJKGGK6HQHFnsII4h4GfQqas4+zGcXDs5dNRPYj+EoFt316CDPZcrhNY0Mb0HnuV43+e4AxxhjKF1XU+bZ3MANwOdH9wghHgAYIZod/8OKqWWRVHc9VEptWwNJklyBeCbUrrRWs8Wi4U4ptZ6RindAPiyu4cEQXALYMsYM57nHZUxZgBs7U47vu/3/ks72wlhjL10xRhjz31iAICqqkac83VbjHO+rqpq1DsIAGEYjoUQH1JK01QI8R6G4fhfsR15nk+SJLlomuf5ZFAMANI0fcTec+3ZacEoilZRFK2cBQGcW90EpZT3ToJKqWtCyCcA43ne28lBAMiy7ExK+UQI+XES3BHH8aWU8tVZ0ELKspx2jznkF5WQhrjMdSwdAAAAAElFTkSuQmCC"); background-repeat: no-repeat; background-position: bottom right; margin-top: 2px; width: 20px; height: 20px; border: none; } .custom-icons .wj-glyph-filter:after { display: none; } /* make active filter images 25% larger */ .custom-icons .wj-filter-on .wj-glyph-filter { transform: scale(1.25); } /* change the color of the filter glyphs */ .custom-colors .wj-glyph-filter { color: red; font-size: 125%; }
function getData() { // create some random data let countries = "US,Germany,UK,Japan,Italy,Greece".split(","), data = []; for (let i = 0; i < 200; i++) { data.push({ id: i, country: countries[i % countries.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; } export const data = getData();
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