Vehicle Editor - Part Text View

-- Open text view
extensions.editor_vehicleEditor_staticEditor_vePartTextView.open()

-- The text view uses virtual scrolling via ImGuiListClipper:
-- im.ImGuiListClipper_Begin(clipper, numLines, fontSize)
-- for lineNo = clipper.DisplayStart+1, clipper.DisplayEnd+1 do
--   -- render AST nodes for this line
-- end

-- AST node rendering with syntax highlighting:
-- local text = jsonAST.stringifyNodes({node})
-- local color = colorTable[node[1]]  -- e.g., colorTable['string']
-- if color then im.PushStyleColor2(im.Col_Text, color) end
-- im.TextUnformatted(text)

-- Selected AST nodes (from other tools) highlighted with red overlay:
-- if vEditor.selectedASTNodeMap[nodeIdx] then
--   im.ImDrawList_AddRectFilled(drawList, rMin, rMax, nodeColorHighlightRed)
-- end

-- Double-click editing opens a modal:
-- if nodeType == 'string' then
--   nodeEditTextInput = im.ArrayChar(256, node[2])
-- elseif nodeType == 'number' then
--   nodeEditDoubleInput[0] = node[2]
-- elseif nodeType == 'bool' then
--   node[2] = not node[2]  -- immediate toggle
-- end

-- Saving writes modified AST back to file:
-- writeFile(vEditor.astFilename, jsonAST.stringify(vEditor.ast.ast))

-- Auto-scroll to selected nodes:
-- local sumLineNums = 0
-- for nodeIdx in pairs(vEditor.selectedASTNodeMap) do
--   sumLineNums = sumLineNums + vEditor.ast.transient.nodeIdxToLineNum[nodeIdx]
-- end
-- lineToScrollTo = sumLineNums / numSelectedLines