http tab more or less done

src/components/settings_modal/helpers/proxy_setting.js

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+import Checkbox from 'src/components/checkbox/checkbox.vue'
+import Setting from './setting.js'
+
+const getUrl = state => state?.tuple ? state.tuple[1] + ':' + state.tuple[2] : state
+const getSocks = state => state?.tuple
+
+export default {
+  ...Setting,
+  data () {
+    return {
+      urlField: '',
+      socksField: false
+    }
+  },
+  created () {
+    Setting.created()
+    this.urlField = getUrl(this.realDraftMode ? this.draft : this.state)
+    this.socksField = getSocks(this.realDraftMode ? this.draft : this.state)
+  },
+  computed: {
+    ...Setting.computed,
+    // state that we'll show in the UI, i.e. transforming map into list
+    displayState () {
+      if (this.visibleState?.tuple) {
+        return this.visibleState.tuple[1] + ':' + this.visibleState.tuple[2]
+      }
+      return this.visibleState
+    },
+    socksState () {
+      return getSocks(this.visibleState)
+    }
+  },
+  components: {
+    ...Setting.components,
+    Checkbox
+  },
+  methods: {
+    ...Setting.methods,
+    getValue ({ event, isProxy}) {
+      if (isProxy) {
+        this.socksField = event
+      } else {
+        this.urlField = event.target.value
+      }
+
+      if (this.socksField) {
+        return { tuple: [ ':socks5', ...this.urlField.split(':') ] }
+      } else {
+        return this.urlField
+      }
+    }
+  }
+}