onSetAttributesAsText method

Implementation

void onSetAttributesAsText(int? id, Map<String, dynamic> params) {
  if (DebugFlags.enableDevToolsLogs) {
    devToolsLogger.finer('[DevTools] DOM.setAttributesAsText nodeId=${params['nodeId']}');
  }
  int? nodeId = params['nodeId'];
  String? text = params['text'];
  String? name = params['name'];
  final ctx = dbgContext;
  if (nodeId == null || ctx == null) {
    sendToFrontend(id, null);
    return;
  }
  final targetId = ctx.getTargetIdByNodeId(nodeId);
  Node? node;
  if (targetId != null) {
    node = ctx.getBindingObject(Pointer.fromAddress(targetId)) as Node?;
  }
  if (node is Element && text != null) {
    final el = node;
    if (name != null && name.isNotEmpty) {
      // Update single attribute case
      if (text.isEmpty) {
        el.removeAttribute(name);
      } else {
        el.setAttribute(name, text);
      }
    } else {
      // Replace attributes from text string
      el.attributes.clear();
      int i = 0;
      while (i < text.length) {
        while (i < text.length && isAsciiWhitespaceCodeUnit(text.codeUnitAt(i))) i++;
        if (i >= text.length) break;

        final int nameStart = i;
        while (i < text.length) {
          final int cu = text.codeUnitAt(i);
          if (isAsciiWhitespaceCodeUnit(cu) || cu == 0x3D /* = */) break;
          i++;
        }
        final String attrName = text.substring(nameStart, i);
        if (attrName.isEmpty) break;

        while (i < text.length && isAsciiWhitespaceCodeUnit(text.codeUnitAt(i))) i++;
        if (i >= text.length || text.codeUnitAt(i) != 0x3D /* = */) {
          // Boolean attribute.
          el.setAttribute(attrName, '');
          continue;
        }

        i++; // '='
        while (i < text.length && isAsciiWhitespaceCodeUnit(text.codeUnitAt(i))) i++;
        if (i >= text.length) {
          el.setAttribute(attrName, '');
          break;
        }

        final int q = text.codeUnitAt(i);
        String value;
        if (q == 0x22 /* " */ || q == 0x27 /* ' */) {
          final int quote = q;
          i++;
          final int vStart = i;
          while (i < text.length && text.codeUnitAt(i) != quote) i++;
          value = text.substring(vStart, i);
          if (i < text.length && text.codeUnitAt(i) == quote) i++;
        } else {
          final int vStart = i;
          while (i < text.length && !isAsciiWhitespaceCodeUnit(text.codeUnitAt(i))) i++;
          value = text.substring(vStart, i);
        }
        el.setAttribute(attrName, value);
      }
    }
  }
  sendToFrontend(id, null);
}