eb240478
 Luigi Serra
public room cards...
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(function () {
if (typeof self === 'undefined' || !self.Prism || !self.document || !document.createRange) {
return;
}
Prism.hooks.add('before-highlight', function (env) {
var firstWhiteSpaces = false;
var pos = 0;
var data = [];
var f = function (elt, baseNode) {
var o = {};
if (!baseNode) {
// Clone the original tag to keep all attributes
o.clone = elt.cloneNode(false);
o.posOpen = pos;
data.push(o);
}
for (var i = 0, l = elt.childNodes.length; i < l; i++) {
var child = elt.childNodes[i];
if (child.nodeType === 1) { // element
f(child);
} else if(child.nodeType === 3) { // text
if(!firstWhiteSpaces) {
// We need to ignore the first white spaces in the code block
child.data = child.data.replace(/^(?:\r?\n|\r)/, '');
firstWhiteSpaces = true;
}
pos += child.data.length;
}
}
if (!baseNode) {
o.posClose = pos;
}
};
f(env.element, true);
if (data && data.length) {
// data is an array of all existing tags
env.keepMarkup = data;
}
});
Prism.hooks.add('after-highlight', function (env) {
if(env.keepMarkup && env.keepMarkup.length) {
var walk = function (elt, nodeState) {
for (var i = 0, l = elt.childNodes.length; i < l; i++) {
var child = elt.childNodes[i];
if (child.nodeType === 1) { // element
if (!walk(child, nodeState)) {
return false;
}
} else if (child.nodeType === 3) { // text
if(!nodeState.nodeStart && nodeState.pos + child.data.length > nodeState.node.posOpen) {
// We found the start position
nodeState.nodeStart = child;
nodeState.nodeStartPos = nodeState.node.posOpen - nodeState.pos;
}
if(nodeState.nodeStart && nodeState.pos + child.data.length >= nodeState.node.posClose) {
// We found the end position
nodeState.nodeEnd = child;
nodeState.nodeEndPos = nodeState.node.posClose - nodeState.pos;
}
nodeState.pos += child.data.length;
}
if (nodeState.nodeStart && nodeState.nodeEnd) {
// Select the range and wrap it with the clone
var range = document.createRange();
range.setStart(nodeState.nodeStart, nodeState.nodeStartPos);
range.setEnd(nodeState.nodeEnd, nodeState.nodeEndPos);
nodeState.node.clone.appendChild(range.extractContents());
range.insertNode(nodeState.node.clone);
range.detach();
// Process is over
return false;
}
}
return true;
};
// For each tag, we walk the DOM to reinsert it
env.keepMarkup.forEach(function (node) {
walk(env.element, {
node: node,
pos: 0
});
});
}
});
}());
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