Function addLineWidget

external/.scrollLibs.js:7790–7818

(doc, handle, node, options)

  }

  function addLineWidget(doc, handle, node, options) {
    var widget = new LineWidget(doc, node, options)
    var cm = doc.cm
    if (cm && widget.noHScroll) {
      cm.display.alignWidgets = true
    }
    changeLine(doc, handle, "widget", function (line) {
      var widgets = line.widgets || (line.widgets = [])
      if (widget.insertAt == null) {
        widgets.push(widget)
      } else {
        widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget)
      }
      widget.line = line
      if (cm && !lineIsHidden(doc, line)) {
        var aboveVisible = heightAtLine(line) < doc.scrollTop
        updateLineHeight(line, line.height + widgetHeight(widget))
        if (aboveVisible) {
          addToScrollTop(cm, widget.height)
        }
        cm.curOp.forceUpdate = true
      }
      return true
    })
    if (cm) {
      signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle))
    }
    return widget
  }

  // TEXTMARKERS