let recorder = new Recorder(
    d3.select("#graph").graphviz(),
    document.getElementById("comment"),
    "graph"
);

let tree = new WAVLTree();
tree.recorder = recorder;

function insertCallback() {
    let number = document.getElementById("insertInput").value;
    if (number === "") {
        return false;
    }

    let value = parseInt(number);
    tree.insert(value);

    document.getElementById("insertInput").value = "";
    return false;
}

function deleteCallback() {
    let number = document.getElementById("deleteInput").value;
    if (number === "") {
        return false;
    }

    let value = parseInt(number);
    tree.delete(value);

    document.getElementById("deleteInput").value = "";
    return false;
}

function render() {
    recorder.render();
    setTimeout(render);
}
render();