validation-for-dialog

[arvados-workbench2.git] / src / utils / dialog-validator.tsx

diff --git a/src/utils/dialog-validator.tsx b/src/utils/dialog-validator.tsx
new file mode 100644 (file)
index 0000000..1d1a921
--- /dev/null
+++ b/src/utils/dialog-validator.tsx
@@ -0,0 +1,72 @@
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
+import * as React from 'react';
+import { StyleRulesCallback, WithStyles, withStyles } from '@material-ui/core';
+
+type ValidatorProps = {
+  value: string,
+  onChange: (isValid: boolean | string) => void;
+  render: (hasError: boolean) => React.ReactElement<any>;
+  isRequired: boolean;
+};
+
+interface ValidatorState {
+  isPatternValid: boolean;
+  isLengthValid: boolean;
+}
+
+const nameRegEx = /^[a-zA-Z0-9-_ ]+$/;
+const maxInputLength = 60;
+
+class Validator extends React.Component<ValidatorProps & WithStyles<CssRules>> {
+  state: ValidatorState = {
+    isPatternValid: true,
+    isLengthValid: true
+  };
+
+  componentWillReceiveProps(nextProps: ValidatorProps) {
+    const { value } = nextProps;
+
+    if (this.props.value !== value) {
+      this.setState({
+        isPatternValid: value.match(nameRegEx),
+        isLengthValid: value.length < maxInputLength
+      }, () => this.onChange());
+    }
+  }
+
+  onChange() {
+    const { value, onChange, isRequired } = this.props;
+    const { isPatternValid, isLengthValid } = this.state;
+    const isValid = value && isPatternValid && isLengthValid && (isRequired || (!isRequired && value.length > 0));
+
+    onChange(isValid);
+  }
+
+  render() {
+    const { classes, isRequired, value } = this.props;
+    const { isPatternValid, isLengthValid } = this.state;
+
+    return (
+      <span>
+        {this.props.render(!(isPatternValid && isLengthValid) && (isRequired || (!isRequired && value.length > 0)))}
+        {!isPatternValid && (isRequired || (!isRequired && value.length > 0)) ? <span className={classes.formInputError}>This field allow only alphanumeric characters, dashes, spaces and underscores.<br /></span> : null}
+        {!isLengthValid ? <span className={classes.formInputError}>This field should have max 60 characters.</span> : null}
+      </span>
+    );
+  }
+}
+
+type CssRules = "formInputError";
+
+const styles: StyleRulesCallback<CssRules> = theme => ({
+  formInputError: {
+    color: "#ff0000",
+    marginLeft: "5px",
+    fontSize: "11px",
+  }
+});
+
+export default withStyles(styles)(Validator);
\ No newline at end of file