Create simple indicator that shows Swing highs and swing lows

I want to create an indicator that is looks similar to the ZigZag indicator that comes when you install MT4 (attached just in case you don't have it). 

The rules of the indicator:

So it shows swing highs and lows. The criteria for a Swing high is a Candle stick with a high that is preceded by two candle sticks with lower highs, and followed by two candle sticks with lower highs. 

Example:

Candle A has a high which is LOWER THAN candle C's high.

Candle B has a high which is LOWER THAN candle C's high.

Candle D has a high which is LOWER THAN candle C's high.

Candle E has a high which is LOWER THAN candle C's high.

Note that candle A high does not have to be lower than B. All highs are only compared to the high of C. 

- Rules for a Swing low are exactly the opposite.

* Two options need to be in the indicator:

1- Being able to choose which timeframe. Example: I have M1 open, I add the indicator to it and choose to show the swing highs and swing lows on M5 or M15 or higher on the M1 chart. 

2-  Need to be able to choose how many highs or lows before and after candle C. In the example it shows only 2 candles with lower highs before and after candle C, I need to be able to make it make it 3, 4 or more candles with lower highs before and after candle C for it to be considered a swing high. (The opposite for a swing low ofcourse).