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Server:

Apache

System:

Linux 4.18.0-553.100.1.el8_10.x86_64

PHP Version:

7.2.34

User:

jaindirectory

Directory:

/home/jaindirectory/www/assets/libraries/codemirror/demo

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✏️ Editing: btree.html

<!doctype html>

<title>CodeMirror: B-Tree visualization</title>

.lineblock { display: inline-block; margin: 1px; height: 5px; }

.CodeMirror {border: 1px solid #aaa; height: 400px}

</style>

<a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>

<ul>

<li><a href="../doc/manual.html">Manual</a>

</ul>

<ul>

<li><a class=active href="#">B-Tree visualization</a>

</ul>

</div>

<h2>B-Tree visualization</h2>

<form><textarea id="code" name="code">type here, see a summary of the document b-tree below</textarea></form>

</div>

</div>

var editor = CodeMirror.fromTextArea(document.getElementById("code"), {

lineNumbers: true,

lineWrapping: true

});

var updateTimeout;

editor.on("change", function(cm) {

clearTimeout(updateTimeout);

updateTimeout = setTimeout(updateVisual, 200);

});

updateVisual();

function updateVisual() {

var out = document.getElementById("output");

out.innerHTML = "";

function drawTree(out, node) {

if (node.lines) {

out.appendChild(document.createElement("div")).innerHTML =

"<b>leaf</b>: " + node.lines.length + " lines, " + Math.round(node.height) + " px";

var lines = out.appendChild(document.createElement("div"));

lines.style.lineHeight = "6px"; lines.style.marginLeft = "10px";

for (var i = 0; i < node.lines.length; ++i) {

var line = node.lines[i], lineElt = lines.appendChild(document.createElement("div"));

lineElt.className = "lineblock";

var gray = Math.min(line.text.length * 3, 230), col = gray.toString(16);

if (col.length == 1) col = "0" + col;

lineElt.style.background = "#" + col + col + col;

lineElt.style.width = Math.max(Math.round(line.height / 3), 1) + "px";

}

} else {

out.appendChild(document.createElement("div")).innerHTML =

"<b>node</b>: " + node.size + " lines, " + Math.round(node.height) + " px";

var sub = out.appendChild(document.createElement("div"));

sub.style.paddingLeft = "20px";

for (var i = 0; i < node.children.length; ++i)

drawTree(sub, node.children[i]);

}

drawTree(out, editor.getDoc());

}

function fillEditor() {

var sc = document.getElementById("me");

var doc = (sc.textContent || sc.innerText || sc.innerHTML).replace(/^\s*/, "") + "\n";

doc += doc; doc += doc; doc += doc; doc += doc; doc += doc; doc += doc;

editor.setValue(doc);

}

</script>

<p><button onclick="fillEditor()">Add a lot of content</button></p>

</article>

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