planning

node_modules/hast-util-to-mdast/lib/util/find-selected-options.js

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+'use strict'
+
+var has = require('hast-util-has-property')
+var convert = require('hast-util-is-element/convert')
+var toText = require('hast-util-to-text')
+var wrapText = require('./wrap-text')
+
+module.exports = findSelectedOptions
+
+var option = convert('option')
+
+function findSelectedOptions(h, node, properties) {
+  var props = properties || node.properties
+  var options = findOptions(node)
+  var size = Math.min(parseInt(props.size, 10), 0) || (props.multiple ? 4 : 1)
+  var index = -1
+  var selectedOptions = []
+  var values = []
+  var option
+  var list
+  var content
+  var label
+  var value
+
+  while (++index < options.length) {
+    if (has(options[index], 'selected')) {
+      selectedOptions.push(options[index])
+    }
+  }
+
+  list = selectedOptions.length ? selectedOptions : options
+  options = list.slice(0, size)
+  index = -1
+
+  while (++index < options.length) {
+    option = options[index]
+    content = wrapText(h, toText(option))
+    label = content || option.properties.label
+    value = option.properties.value || content
+
+    values.push([value, label === value ? null : label])
+  }
+
+  return values
+}
+
+function findOptions(node) {
+  var children = node.children
+  var index = -1
+  var results = []
+  var child
+
+  while (++index < children.length) {
+    child = children[index]
+
+    if (option(child)) {
+      if (!has(child, 'disabled')) {
+        results.push(child)
+      }
+    } else if (child.children) {
+      results = results.concat(findOptions(child))
+    }
+  }
+
+  return results
+}