1 files changed, 62 insertions, 0 deletions
diff --git a/frontend/src/components/fields/extensions/NumericField.jsx b/frontend/src/components/fields/extensions/NumericField.jsx
new file mode 100644
index 0000000..a6cba26
--- /dev/null
+++ b/frontend/src/components/fields/extensions/NumericField.jsx
@@ -0,0 +1,62 @@
+/*
+ * This file is part of caronte (https://github.com/eciavatta/caronte).
+ * Copyright (c) 2020 Emiliano Ciavatta.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import React, {Component} from "react";
+import InputField from "../InputField";
+
+class NumericField extends Component {
+
+    constructor(props) {
+        super(props);
+
+        this.state = {
+            invalid: false
+        };
+    }
+
+    componentDidUpdate(prevProps, prevState, snapshot) {
+        if (prevProps.value !== this.props.value) {
+            this.onChange(this.props.value);
+        }
+    }
+
+    onChange = (value) => {
+        value = value.toString().replace(/[^\d]/gi, "");
+        let intValue = 0;
+        if (value !== "") {
+            intValue = parseInt(value, 10);
+        }
+        const valid =
+            (!this.props.validate || (typeof this.props.validate === "function" && this.props.validate(intValue))) &&
+            (!this.props.min || (typeof this.props.min === "number" && intValue >= this.props.min)) &&
+            (!this.props.max || (typeof this.props.max === "number" && intValue <= this.props.max));
+        this.setState({invalid: !valid});
+        if (typeof this.props.onChange === "function") {
+            this.props.onChange(intValue);
+        }
+    };
+
+    render() {
+        return (
+            <InputField {...this.props} onChange={this.onChange} defaultValue={this.props.defaultValue || "0"}
+                        invalid={this.state.invalid}/>
+        );
+    }
+
+}
+
+export default NumericField;