highlight code of the main contract

Fixes #1676

ui/address/contract/ContractSourceCode.tsx

@@ -163,6 +163,7 @@ const ContractSourceCode = ({ address, implementationAddress }: Props) => {
             libraries={ primaryContractQuery.data?.external_libraries ?? undefined }
             language={ primaryContractQuery.data?.language ?? undefined }
             mainFile={ primaryEditorData[0]?.file_path }
+            contractName={ primaryContractQuery.data?.name || undefined }
           />
         </Box>
         { secondaryEditorData && (
@@ -173,6 +174,7 @@ const ContractSourceCode = ({ address, implementationAddress }: Props) => {
               libraries={ secondaryContractQuery.data?.external_libraries ?? undefined }
               language={ secondaryContractQuery.data?.language ?? undefined }
               mainFile={ secondaryEditorData?.[0]?.file_path }
+              contractName={ secondaryContractQuery.data?.name || undefined }
             />
           </Box>
         ) }

ui/shared/monaco/CodeEditor.tsx

@@ -19,6 +19,7 @@ import CodeEditorSideBar, { CONTAINER_WIDTH as SIDE_BAR_WIDTH } from './CodeEdit
 import CodeEditorTabs from './CodeEditorTabs';
 import addExternalLibraryWarningDecoration from './utils/addExternalLibraryWarningDecoration';
 import addFileImportDecorations from './utils/addFileImportDecorations';
+import addMainContractCodeDecoration from './utils/addMainContractCodeDecoration';
 import getFullPathOfImportedFile from './utils/getFullPathOfImportedFile';
 import * as themes from './utils/themes';
 import useThemeColors from './utils/useThemeColors';
@@ -42,9 +43,10 @@ interface Props {
   libraries?: Array<SmartContractExternalLibrary>;
   language?: string;
   mainFile?: string;
+  contractName?: string;
 }
 
-const CodeEditor = ({ data, remappings, libraries, language, mainFile }: Props) => {
+const CodeEditor = ({ data, remappings, libraries, language, mainFile, contractName }: Props) => {
   const [ instance, setInstance ] = React.useState<Monaco | undefined>();
   const [ editor, setEditor ] = React.useState<monaco.editor.IStandaloneCodeEditor | undefined>();
   const [ index, setIndex ] = React.useState(0);
@@ -82,9 +84,10 @@ const CodeEditor = ({ data, remappings, libraries, language, mainFile }: Props)
 
     if (language === 'solidity') {
       loadedModels.concat(newModels)
-        .forEach((models) => {
-          addFileImportDecorations(models);
-          libraries?.length && addExternalLibraryWarningDecoration(models, libraries);
+        .forEach((model) => {
+          contractName && mainFile === model.uri.path && addMainContractCodeDecoration(model, contractName, editor);
+          addFileImportDecorations(model);
+          libraries?.length && addExternalLibraryWarningDecoration(model, libraries);
         });
     }
 
@@ -192,6 +195,13 @@ const CodeEditor = ({ data, remappings, libraries, language, mainFile }: Props)
     '.monaco-editor .overflow-guard': {
       'border-bottom-left-radius': borderRadius,
     },
+    '.monaco-editor .core-guide': {
+      zIndex: 1,
+    },
+    // '.monaco-editor .currentFindMatch': // TODO: find a better way to style this
+    '.monaco-editor .findMatch': {
+      backgroundColor: themeColors['custom.findMatchHighlightBackground'],
+    },
     '.highlight': {
       backgroundColor: themeColors['custom.findMatchHighlightBackground'],
     },
@@ -206,6 +216,18 @@ const CodeEditor = ({ data, remappings, libraries, language, mainFile }: Props)
     '.risk-warning': {
       backgroundColor: themeColors['custom.riskWarning.background'],
     },
+    '.main-contract-header': {
+      backgroundColor: themeColors['custom.mainContract.header'],
+    },
+    '.main-contract-body': {
+      backgroundColor: themeColors['custom.mainContract.body'],
+    },
+    '.main-contract-glyph': {
+      zIndex: 1,
+      background: 'url(/static/contract_star.png) no-repeat center center',
+      backgroundSize: '12px',
+      cursor: 'pointer',
+    },
   }), [ editorWidth, themeColors, borderRadius ]);
 
   const renderErrorScreen = React.useCallback(() => {

ui/shared/monaco/utils/addExternalLibraryWarningDecoration.ts

@@ -2,6 +2,8 @@ import type * as monaco from 'monaco-editor/esm/vs/editor/editor.api';
 
 import type { SmartContractExternalLibrary } from 'types/api/contract';
 
+import sortByEndLineNumberAsc from './sortByEndLineNumberAsc';
+
 export default function addExternalLibraryWarningDecoration(model: monaco.editor.ITextModel, libraries: Array<SmartContractExternalLibrary>) {
   const options: monaco.editor.IModelDecorationOptions = {
     isWholeLine: true,
@@ -81,15 +83,3 @@ const getLibraryName = (model: monaco.editor.ITextModel) => (library: SmartContr
 
   return libraryName;
 };
-
-const sortByEndLineNumberAsc = (a: monaco.editor.FindMatch, b: monaco.editor.FindMatch) => {
-  if (a.range.endLineNumber < b.range.endLineNumber) {
-    return -1;
-  }
-
-  if (a.range.endLineNumber > b.range.endLineNumber) {
-    return 1;
-  }
-
-  return 0;
-};

ui/shared/monaco/utils/addMainContractCodeDecoration.ts

@@ -0,0 +1,66 @@
+import type * as monaco from 'monaco-editor/esm/vs/editor/editor.api';
+
+import sortByEndLineNumberAsc from './sortByEndLineNumberAsc';
+
+export default function addMainContractCodeDecoration(model: monaco.editor.ITextModel, contractName: string, editor: monaco.editor.IStandaloneCodeEditor) {
+  const options: monaco.editor.IModelDecorationOptions = {
+    isWholeLine: true,
+  };
+
+  const contractBlockMatches = model.findMatches(`^contract\\s`, false, true, false, null, true);
+
+  if (contractBlockMatches.length < 2) {
+    return;
+  }
+
+  const [ firstLineMatch ] = model.findMatches(`(^contract ${ contractName })( is .+)?\\s?\\{`, false, true, false, null, true);
+
+  if (!firstLineMatch) {
+    return;
+  }
+
+  const firstLineDecoration: monaco.editor.IModelDeltaDecoration = {
+    range: {
+      startColumn: 1,
+      endColumn: 10, // doesn't really matter since isWholeLine is true
+      startLineNumber: firstLineMatch.range.startLineNumber,
+      endLineNumber: firstLineMatch.range.startLineNumber,
+    },
+    options: {
+      ...options,
+      className: '.main-contract-header',
+      marginClassName: '.main-contract-header',
+      glyphMarginClassName: '.main-contract-glyph',
+      glyphMarginHoverMessage: [
+        { value: 'Main contract' },
+      ],
+    },
+  };
+
+  const lastLineRange: monaco.IRange = {
+    startLineNumber: firstLineMatch.range.startLineNumber,
+    startColumn: 1,
+    endColumn: 10,
+    endLineNumber: model.getLineCount(),
+  };
+  const [ lastLineMatch ] = model
+    .findMatches(`^\\}`, lastLineRange, true, false, null, true)
+    .sort(sortByEndLineNumberAsc);
+
+  const restDecoration: monaco.editor.IModelDeltaDecoration = {
+    range: {
+      startLineNumber: firstLineMatch.range.startLineNumber + 1,
+      endLineNumber: lastLineMatch.range.startLineNumber,
+      startColumn: 1,
+      endColumn: 10, // doesn't really matter since isWholeLine is true
+    },
+    options: {
+      ...options,
+      className: '.main-contract-body',
+      marginClassName: '.main-contract-body',
+    },
+  };
+
+  editor.updateOptions({ glyphMargin: true });
+  model.deltaDecorations([], [ firstLineDecoration, restDecoration ]);
+}

ui/shared/monaco/utils/sortByEndLineNumberAsc.ts

@@ -0,0 +1,13 @@
+import type * as monaco from 'monaco-editor/esm/vs/editor/editor.api';
+
+export default function sortByEndLineNumberAsc(a: monaco.editor.FindMatch, b: monaco.editor.FindMatch) {
+  if (a.range.endLineNumber < b.range.endLineNumber) {
+    return -1;
+  }
+
+  if (a.range.endLineNumber > b.range.endLineNumber) {
+    return 1;
+  }
+
+  return 0;
+}

ui/shared/monaco/utils/themes.ts

@@ -37,6 +37,8 @@ export const light = {
     'custom.fileLink.hoverForeground': '#4299E1', // blue.400
     'custom.riskWarning.primaryBackground': '#FEEBCB', // orange.100
     'custom.riskWarning.background': '#FFFAF0', // orange.50
+    'custom.mainContract.header': 'rgba(233, 216, 253, 1)', // purple.100
+    'custom.mainContract.body': 'rgba(250, 245, 255, 1)', // purple.50
   } as const,
 };
 
@@ -79,5 +81,7 @@ export const dark = {
     'custom.fileLink.hoverForeground': '#4299E1', // blue.400
     'custom.riskWarning.primaryBackground': 'rgba(246, 173, 85, 0.3)', // orange.300
     'custom.riskWarning.background': 'rgba(246, 173, 85, 0.1)', // orange.300
+    'custom.mainContract.header': 'rgba(183, 148, 244, 0.3)', // purple.300
+    'custom.mainContract.body': 'rgba(214, 188, 250, 0.1)', // purple.200
   } as const,
 };