[Vis: Default editor] Reactify the timelion editor (elastic#52990)

* Reactify timelion editor

* Change translation ids

* Add @types/pegjs into renovate.json5

* Add validation, add hover suggestions

* Style fixes

* Change plugin setup, use kibana context

* Change plugin start

* Mock services

* Fix other comments

* Build renovate config

* Fix some classnames and SASS file structure

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
Co-authored-by: Caroline Horn <549577+cchaos@users.noreply.github.com>

package.json

@@ -341,6 +341,7 @@
     "@types/mustache": "^0.8.31",
     "@types/node": "^10.12.27",
     "@types/opn": "^5.1.0",
+    "@types/pegjs": "^0.10.1",
     "@types/pngjs": "^3.3.2",
     "@types/podium": "^1.0.0",
     "@types/prop-types": "^15.5.3",

renovate.json5

@@ -673,6 +673,14 @@
           '@types/parse-link-header',
         ],
       },
+      {
+        groupSlug: 'pegjs',
+        groupName: 'pegjs related packages',
+        packageNames: [
+          'pegjs',
+          '@types/pegjs',
+        ],
+      },
       {
         groupSlug: 'pngjs',
         groupName: 'pngjs related packages',

src/legacy/core_plugins/timelion/common/types.ts

@@ -0,0 +1,46 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+type TimelionFunctionArgsTypes = 'seriesList' | 'number' | 'string' | 'boolean' | 'null';
+
+interface TimelionFunctionArgsSuggestion {
+  name: string;
+  help: string;
+}
+
+export interface TimelionFunctionArgs {
+  name: string;
+  help?: string;
+  multi?: boolean;
+  types: TimelionFunctionArgsTypes[];
+  suggestions?: TimelionFunctionArgsSuggestion[];
+}
+
+export interface ITimelionFunction {
+  aliases: string[];
+  args: TimelionFunctionArgs[];
+  name: string;
+  help: string;
+  chainable: boolean;
+  extended: boolean;
+  isAlias: boolean;
+  argsByName: {
+    [key: string]: TimelionFunctionArgs[];
+  };
+}

src/legacy/core_plugins/timelion/public/components/_index.scss

@@ -0,0 +1 @@
+@import './timelion_expression_input';

src/legacy/core_plugins/timelion/public/components/_timelion_expression_input.scss

@@ -0,0 +1,18 @@
+.timExpressionInput {
+  flex: 1 1 auto;
+  display: flex;
+  flex-direction: column;
+  margin-top: $euiSize;
+}
+
+.timExpressionInput__editor {
+  height: 100%;
+  padding-top: $euiSizeS;
+}
+
+@include euiBreakpoint('xs', 's', 'm') {
+  .timExpressionInput__editor {
+    height: $euiSize * 15;
+    max-height: $euiSize * 15;
+  }
+}

src/legacy/core_plugins/timelion/public/components/index.ts

@@ -0,0 +1,21 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+export * from './timelion_expression_input';
+export * from './timelion_interval';

src/legacy/core_plugins/timelion/public/components/timelion_expression_input.tsx

@@ -0,0 +1,146 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import React, { useEffect, useCallback, useRef, useMemo } from 'react';
+import { EuiFormLabel } from '@elastic/eui';
+import { FormattedMessage } from '@kbn/i18n/react';
+import * as monacoEditor from 'monaco-editor/esm/vs/editor/editor.api';
+
+import { CodeEditor, useKibana } from '../../../../../plugins/kibana_react/public';
+import { suggest, getSuggestion } from './timelion_expression_input_helpers';
+import { ITimelionFunction, TimelionFunctionArgs } from '../../common/types';
+import { getArgValueSuggestions } from '../services/arg_value_suggestions';
+
+const LANGUAGE_ID = 'timelion_expression';
+monacoEditor.languages.register({ id: LANGUAGE_ID });
+
+interface TimelionExpressionInputProps {
+  value: string;
+  setValue(value: string): void;
+}
+
+function TimelionExpressionInput({ value, setValue }: TimelionExpressionInputProps) {
+  const functionList = useRef([]);
+  const kibana = useKibana();
+  const argValueSuggestions = useMemo(getArgValueSuggestions, []);
+
+  const provideCompletionItems = useCallback(
+    async (model: monacoEditor.editor.ITextModel, position: monacoEditor.Position) => {
+      const text = model.getValue();
+      const wordUntil = model.getWordUntilPosition(position);
+      const wordRange = new monacoEditor.Range(
+        position.lineNumber,
+        wordUntil.startColumn,
+        position.lineNumber,
+        wordUntil.endColumn
+      );
+
+      const suggestions = await suggest(
+        text,
+        functionList.current,
+        // it's important to offset the cursor position on 1 point left
+        // because of PEG parser starts the line with 0, but monaco with 1
+        position.column - 1,
+        argValueSuggestions
+      );
+
+      return {
+        suggestions: suggestions
+          ? suggestions.list.map((s: ITimelionFunction | TimelionFunctionArgs) =>
+              getSuggestion(s, suggestions.type, wordRange)
+            )
+          : [],
+      };
+    },
+    [argValueSuggestions]
+  );
+
+  const provideHover = useCallback(
+    async (model: monacoEditor.editor.ITextModel, position: monacoEditor.Position) => {
+      const suggestions = await suggest(
+        model.getValue(),
+        functionList.current,
+        // it's important to offset the cursor position on 1 point left
+        // because of PEG parser starts the line with 0, but monaco with 1
+        position.column - 1,
+        argValueSuggestions
+      );
+
+      return {
+        contents: suggestions
+          ? suggestions.list.map((s: ITimelionFunction | TimelionFunctionArgs) => ({
+              value: s.help,
+            }))
+          : [],
+      };
+    },
+    [argValueSuggestions]
+  );
+
+  useEffect(() => {
+    if (kibana.services.http) {
+      kibana.services.http.get('../api/timelion/functions').then(data => {
+        functionList.current = data;
+      });
+    }
+  }, [kibana.services.http]);
+
+  return (
+    <div className="timExpressionInput">
+      <EuiFormLabel>
+        <FormattedMessage id="timelion.vis.expressionLabel" defaultMessage="Timelion expression" />
+      </EuiFormLabel>
+      <div className="timExpressionInput__editor">
+        <CodeEditor
+          languageId={LANGUAGE_ID}
+          value={value}
+          onChange={setValue}
+          suggestionProvider={{
+            triggerCharacters: ['.', ',', '(', '=', ':'],
+            provideCompletionItems,
+          }}
+          hoverProvider={{ provideHover }}
+          options={{
+            fixedOverflowWidgets: true,
+            fontSize: 14,
+            folding: false,
+            lineNumbers: 'off',
+            scrollBeyondLastLine: false,
+            minimap: {
+              enabled: false,
+            },
+            wordBasedSuggestions: false,
+            wordWrap: 'on',
+            wrappingIndent: 'indent',
+          }}
+          languageConfiguration={{
+            autoClosingPairs: [
+              {
+                open: '(',
+                close: ')',
+              },
+            ],
+          }}
+        />
+      </div>
+    </div>
+  );
+}
+
+export { TimelionExpressionInput };