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-rw-r--r--web_src/js/features/codeeditor.ts192
1 files changed, 192 insertions, 0 deletions
diff --git a/web_src/js/features/codeeditor.ts b/web_src/js/features/codeeditor.ts
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+import tinycolor from 'tinycolor2';
+import {basename, extname, isObject, isDarkTheme} from '../utils.ts';
+import {onInputDebounce} from '../utils/dom.ts';
+
+const languagesByFilename = {};
+const languagesByExt = {};
+
+const baseOptions = {
+ fontFamily: 'var(--fonts-monospace)',
+ fontSize: 14, // https://github.com/microsoft/monaco-editor/issues/2242
+ guides: {bracketPairs: false, indentation: false},
+ links: false,
+ minimap: {enabled: false},
+ occurrencesHighlight: 'off',
+ overviewRulerLanes: 0,
+ renderLineHighlight: 'all',
+ renderLineHighlightOnlyWhenFocus: true,
+ rulers: false,
+ scrollbar: {horizontalScrollbarSize: 6, verticalScrollbarSize: 6},
+ scrollBeyondLastLine: false,
+ automaticLayout: true,
+};
+
+function getEditorconfig(input) {
+ try {
+ return JSON.parse(input.getAttribute('data-editorconfig'));
+ } catch {
+ return null;
+ }
+}
+
+function initLanguages(monaco) {
+ for (const {filenames, extensions, id} of monaco.languages.getLanguages()) {
+ for (const filename of filenames || []) {
+ languagesByFilename[filename] = id;
+ }
+ for (const extension of extensions || []) {
+ languagesByExt[extension] = id;
+ }
+ }
+}
+
+function getLanguage(filename) {
+ return languagesByFilename[filename] || languagesByExt[extname(filename)] || 'plaintext';
+}
+
+function updateEditor(monaco, editor, filename, lineWrapExts) {
+ editor.updateOptions(getFileBasedOptions(filename, lineWrapExts));
+ const model = editor.getModel();
+ const language = model.getLanguageId();
+ const newLanguage = getLanguage(filename);
+ if (language !== newLanguage) monaco.editor.setModelLanguage(model, newLanguage);
+}
+
+// export editor for customization - https://github.com/go-gitea/gitea/issues/10409
+function exportEditor(editor) {
+ if (!window.codeEditors) window.codeEditors = [];
+ if (!window.codeEditors.includes(editor)) window.codeEditors.push(editor);
+}
+
+export async function createMonaco(textarea, filename, editorOpts) {
+ const monaco = await import(/* webpackChunkName: "monaco" */'monaco-editor');
+
+ initLanguages(monaco);
+ let {language, ...other} = editorOpts;
+ if (!language) language = getLanguage(filename);
+
+ const container = document.createElement('div');
+ container.className = 'monaco-editor-container';
+ textarea.parentNode.append(container);
+
+ // https://github.com/microsoft/monaco-editor/issues/2427
+ // also, monaco can only parse 6-digit hex colors, so we convert the colors to that format
+ const styles = window.getComputedStyle(document.documentElement);
+ const getColor = (name) => tinycolor(styles.getPropertyValue(name).trim()).toString('hex6');
+
+ monaco.editor.defineTheme('gitea', {
+ base: isDarkTheme() ? 'vs-dark' : 'vs',
+ inherit: true,
+ rules: [
+ {
+ background: getColor('--color-code-bg'),
+ },
+ ],
+ colors: {
+ 'editor.background': getColor('--color-code-bg'),
+ 'editor.foreground': getColor('--color-text'),
+ 'editor.inactiveSelectionBackground': getColor('--color-primary-light-4'),
+ 'editor.lineHighlightBackground': getColor('--color-editor-line-highlight'),
+ 'editor.selectionBackground': getColor('--color-primary-light-3'),
+ 'editor.selectionForeground': getColor('--color-primary-light-3'),
+ 'editorLineNumber.background': getColor('--color-code-bg'),
+ 'editorLineNumber.foreground': getColor('--color-secondary-dark-6'),
+ 'editorWidget.background': getColor('--color-body'),
+ 'editorWidget.border': getColor('--color-secondary'),
+ 'input.background': getColor('--color-input-background'),
+ 'input.border': getColor('--color-input-border'),
+ 'input.foreground': getColor('--color-input-text'),
+ 'scrollbar.shadow': getColor('--color-shadow'),
+ 'progressBar.background': getColor('--color-primary'),
+ 'focusBorder': '#0000', // prevent blue border
+ },
+ });
+
+ const editor = monaco.editor.create(container, {
+ value: textarea.value,
+ theme: 'gitea',
+ language,
+ ...other,
+ });
+
+ monaco.editor.addKeybindingRules([
+ {keybinding: monaco.KeyCode.Enter, command: null}, // disable enter from accepting code completion
+ ]);
+
+ const model = editor.getModel();
+ model.onDidChangeContent(() => {
+ textarea.value = editor.getValue({preserveBOM: true});
+ textarea.dispatchEvent(new Event('change')); // seems to be needed for jquery-are-you-sure
+ });
+
+ exportEditor(editor);
+
+ const loading = document.querySelector('.editor-loading');
+ if (loading) loading.remove();
+
+ return {monaco, editor};
+}
+
+function getFileBasedOptions(filename, lineWrapExts) {
+ return {
+ wordWrap: (lineWrapExts || []).includes(extname(filename)) ? 'on' : 'off',
+ };
+}
+
+function togglePreviewDisplay(previewable) {
+ const previewTab = document.querySelector('a[data-tab="preview"]');
+ if (!previewTab) return;
+
+ if (previewable) {
+ const newUrl = (previewTab.getAttribute('data-url') || '').replace(/(.*)\/.*/, `$1/markup`);
+ previewTab.setAttribute('data-url', newUrl);
+ previewTab.style.display = '';
+ } else {
+ previewTab.style.display = 'none';
+ // If the "preview" tab was active, user changes the filename to a non-previewable one,
+ // then the "preview" tab becomes inactive (hidden), so the "write" tab should become active
+ if (previewTab.classList.contains('active')) {
+ const writeTab = document.querySelector('a[data-tab="write"]');
+ writeTab.click();
+ }
+ }
+}
+
+export async function createCodeEditor(textarea, filenameInput) {
+ const filename = basename(filenameInput.value);
+ const previewableExts = new Set((textarea.getAttribute('data-previewable-extensions') || '').split(','));
+ const lineWrapExts = (textarea.getAttribute('data-line-wrap-extensions') || '').split(',');
+ const previewable = previewableExts.has(extname(filename));
+ const editorConfig = getEditorconfig(filenameInput);
+
+ togglePreviewDisplay(previewable);
+
+ const {monaco, editor} = await createMonaco(textarea, filename, {
+ ...baseOptions,
+ ...getFileBasedOptions(filenameInput.value, lineWrapExts),
+ ...getEditorConfigOptions(editorConfig),
+ });
+
+ filenameInput.addEventListener('input', onInputDebounce(() => {
+ const filename = filenameInput.value;
+ const previewable = previewableExts.has(extname(filename));
+ togglePreviewDisplay(previewable);
+ updateEditor(monaco, editor, filename, lineWrapExts);
+ }));
+
+ return editor;
+}
+
+function getEditorConfigOptions(ec) {
+ if (!isObject(ec)) return {};
+
+ const opts = {};
+ opts.detectIndentation = !('indent_style' in ec) || !('indent_size' in ec);
+ if ('indent_size' in ec) opts.indentSize = Number(ec.indent_size);
+ if ('tab_width' in ec) opts.tabSize = Number(ec.tab_width) || opts.indentSize;
+ if ('max_line_length' in ec) opts.rulers = [Number(ec.max_line_length)];
+ opts.trimAutoWhitespace = ec.trim_trailing_whitespace === true;
+ opts.insertSpaces = ec.indent_style === 'space';
+ opts.useTabStops = ec.indent_style === 'tab';
+ return opts;
+}