fun selectHistory()

in vim-engine/src/main/kotlin/com/maddyhome/idea/vim/api/VimCommandLine.kt [128:176]

42 lines of code
12 McCabe index (conditional complexity)


  fun selectHistory(isUp: Boolean, filter: Boolean) {
    val history = injector.historyGroup.getEntries(historyType, 0, 0)

    val dir = if (isUp) -1 else 1
    if (histIndex + dir < 0 || histIndex + dir > history.size) {
      injector.messages.indicateError()

      return
    }

    if (filter) {
      var i: Int = histIndex + dir
      while (i >= 0 && i <= history.size) {
        var txt: String?
        if (i == history.size) {
          txt = lastEntry
        } else {
          val entry: HistoryEntry = history[i]
          txt = entry.entry
        }

        val myLastEntry = lastEntry
        if (txt != null && myLastEntry != null && txt.startsWith(myLastEntry)) {
          setText(txt, updateLastEntry = false)
          caret.offset = txt.length
          histIndex = i

          return
        }
        i += dir
      }

      injector.messages.indicateError()
    } else {
      histIndex += dir
      val txt: String?
      if (histIndex == history.size) {
        txt = lastEntry
      } else {
        val entry: HistoryEntry = history[histIndex]
        txt = entry.entry
      }

      if (txt != null) {
        setText(txt, updateLastEntry = false)
        caret.offset = txt.length
      }
    }
  }