refactor: externalize filetree runtime helpers

2026-05-25 00:22:08 +08:00
parent d4bef58773
commit 2f01dc3a2e
6 changed files with 556 additions and 1 deletions
@@ -0,0 +1,187 @@
+// MNote 文件树上下文菜单运行时外置模块。
+// 当前先承接 CommandContext 构造与 when 表达式求值，树语义仍由 Rust/kernel 主导。
+
+function buildSidebarFileTreeContext(kind, deps) {
+  var selection = deps && deps.selection ? deps.selection : {};
+  var rowIds = Array.isArray(selection.selectedRowIds)
+    ? selection.selectedRowIds
+    : Array.from(selection.selectedRowIds || []);
+  var rows = [];
+  var queryRowById = deps && typeof deps.queryRowById === 'function'
+    ? deps.queryRowById
+    : function() { return null; };
+  for (var i = 0; i < rowIds.length; i += 1) {
+    var row = queryRowById(rowIds[i]);
+    if (row instanceof HTMLElement) rows.push(row);
+  }
+  var resourceKinds = {};
+  for (var j = 0; j < rows.length; j += 1) {
+    var rk = rows[j].getAttribute('data-row-kind') || 'unknown';
+    resourceKinds[rk] = true;
+  }
+  var rkKeys = Object.keys(resourceKinds);
+  var currentSourceKind = deps && typeof deps.currentSourceKind === 'function'
+    ? deps.currentSourceKind
+    : function() { return ''; };
+  var readonly = deps && typeof deps.workspaceReadonly === 'function'
+    ? deps.workspaceReadonly()
+    : false;
+  return {
+    'workspace.sourceKind': currentSourceKind() || '',
+    'workspace.readonly': readonly === true,
+    'tree.focusKind': kind === 'filetree' ? 'file_tree' : kind === 'page' ? 'page_tree' : kind,
+    'tree.selectionCount': rows.length,
+    'tree.selectionResourceKind': rkKeys.length === 1 ? rkKeys[0] : 'mixed'
+  };
+}
+
+function evaluateSidebarFileTreeWhen(ctx, expr) {
+  if (!expr) return true;
+  try {
+    expr = String(expr || '').trim();
+    var tokens = tokenizeWhenExpression(expr);
+    var pos = 0;
+    function peek() { return tokens[pos]; }
+    function consume() { return tokens[pos++]; }
+    function expect(t) {
+      var tok = consume();
+      if (!tok || tok.t !== t) throw new Error('Expected ' + t + ' got ' + (tok ? tok.t : 'EOF'));
+      return tok;
+    }
+    function ctxVal(key) {
+      var v = ctx[key];
+      if (v === undefined || v === null) return '';
+      return v;
+    }
+    function compareValue(cv, value, equal) {
+      if (value === 'true') {
+        var truth = cv === true || cv === 'true';
+        return equal ? truth : !truth;
+      }
+      if (value === 'false') {
+        var falsy = cv === false || cv === '' || cv === 'false';
+        return equal ? falsy : !falsy;
+      }
+      var num = Number(value);
+      if (!isNaN(num) && String(num) === value) {
+        return equal ? Number(cv) === num : Number(cv) !== num;
+      }
+      return equal ? String(cv) === value : String(cv) !== value;
+    }
+    function parseOr() {
+      var left = parseAnd();
+      while (peek() && peek().t === '||') {
+        consume();
+        var right = parseAnd();
+        left = left || right;
+      }
+      return left;
+    }
+    function parseAnd() {
+      var left = parsePrimary();
+      while (peek() && peek().t === '&&') {
+        consume();
+        var right = parsePrimary();
+        left = left && right;
+      }
+      return left;
+    }
+    function parsePrimary() {
+      if (!peek()) throw new Error('Unexpected EOF');
+      if (peek().t === '(') {
+        consume();
+        var grouped = parseOr();
+        expect(')');
+        return grouped;
+      }
+      if (peek().t === '!') {
+        consume();
+        var notTok = consume();
+        if (!notTok || notTok.t !== 'id') throw new Error('Expected key after !');
+        return !ctxVal(notTok.v);
+      }
+      if (peek().t === 'id') {
+        var keyTok = consume();
+        if (peek() && peek().t === '==') {
+          consume();
+          var eqTok = consume();
+          if (!eqTok) throw new Error('Expected value after ==');
+          return compareValue(ctxVal(keyTok.v), eqTok.t === 'str' ? eqTok.v : (eqTok.v || ''), true);
+        }
+        if (peek() && peek().t === '!=') {
+          consume();
+          var neTok = consume();
+          if (!neTok) throw new Error('Expected value after !=');
+          return compareValue(ctxVal(keyTok.v), neTok.t === 'str' ? neTok.v : (neTok.v || ''), false);
+        }
+        var cv = ctxVal(keyTok.v);
+        if (typeof cv === 'boolean') return cv;
+        if (typeof cv === 'number') return cv !== 0;
+        return cv !== '' && cv !== undefined && cv !== null;
+      }
+      throw new Error('Unexpected token: ' + peek().t);
+    }
+    return parseOr();
+  } catch (_) {
+    return true;
+  }
+}
+
+function tokenizeWhenExpression(expr) {
+  var tokens = [];
+  var i = 0;
+  while (i < expr.length) {
+    var ch = expr[i];
+    if (ch === ' ' || ch === '\t') { i += 1; continue; }
+    if (ch === '(') { tokens.push({ t: '(' }); i += 1; continue; }
+    if (ch === ')') { tokens.push({ t: ')' }); i += 1; continue; }
+    if (ch === '&' && expr[i + 1] === '&') { tokens.push({ t: '&&' }); i += 2; continue; }
+    if (ch === '|' && expr[i + 1] === '|') { tokens.push({ t: '||' }); i += 2; continue; }
+    if (ch === '=' && expr[i + 1] === '=') { tokens.push({ t: '==' }); i += 2; continue; }
+    if (ch === '!' && expr[i + 1] === '=') { tokens.push({ t: '!=' }); i += 2; continue; }
+    if (ch === '!') { tokens.push({ t: '!' }); i += 1; continue; }
+    if (ch === '"' || ch === "'") {
+      i += 1;
+      var str = '';
+      while (i < expr.length && expr[i] !== ch) {
+        str += expr[i];
+        i += 1;
+      }
+      if (i < expr.length) i += 1;
+      tokens.push({ t: 'str', v: str });
+      continue;
+    }
+    if (
+      (ch >= 'a' && ch <= 'z') ||
+      (ch >= 'A' && ch <= 'Z') ||
+      (ch >= '0' && ch <= '9') ||
+      ch === '_' ||
+      ch === '.'
+    ) {
+      var id = '';
+      while (
+        i < expr.length &&
+        (
+          (expr[i] >= 'a' && expr[i] <= 'z') ||
+          (expr[i] >= 'A' && expr[i] <= 'Z') ||
+          (expr[i] >= '0' && expr[i] <= '9') ||
+          expr[i] === '_' ||
+          expr[i] === '.'
+        )
+      ) {
+        id += expr[i];
+        i += 1;
+      }
+      tokens.push({ t: 'id', v: id });
+      continue;
+    }
+    throw new Error('Unexpected char: ' + ch);
+  }
+  return tokens;
+}
+
+window.__mnoteFileTreeContextMenuRuntime = {
+  buildSidebarFileTreeContext: buildSidebarFileTreeContext,
+  evaluateSidebarFileTreeWhen: evaluateSidebarFileTreeWhen,
+  tokenizeWhenExpression: tokenizeWhenExpression
+};