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Adding word-wrap support #14

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Adding word-wrap support #14

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84bcb44
Adding word-wrap support
lerminou Feb 27, 2017
0f060cf
Handle multiple wrap for each lines
lerminou Feb 27, 2017
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46 changes: 34 additions & 12 deletions src/highlightjs-line-numbers.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,26 +22,39 @@

for (var i in blocks) {
if (blocks.hasOwnProperty(i)) {
lineNumbersBlock(blocks[i]);
lineNumbersBlock(blocks[i], true);
}
}

$( window ).resize(function() {
for (var i in blocks) {
if (blocks.hasOwnProperty(i)) {
lineNumbersBlock(blocks[i], false);
}
}
});
} catch (e) {
console.error('LineNumbers error: ', e);
}
}

function lineNumbersBlock (element) {
//Add a second parameter to know if triggered by resizing
function lineNumbersBlock (element, resize) {
if (typeof element !== 'object') return;

var parent = element.parentNode;
var lines = getCountLines(parent.textContent);

var lines = getCountLines(element, resize);
if (lines > 1) {
var l = '';
for (var i = 0; i < lines; i++) {
l += (i + 1) + '\n';
}

$('.hljs-line').each(function(i) {
l += (i + 1) + '\n';
//add a empty line if word wrap is detected (if div's height if > than the line-height)
var height = Math.round(parseInt($(this).height())/parseInt($(this).css('line-height')));
if( height > 1){
l += '\n'.repeat(height-1);
}
});
$('.hljs-line-numbers').remove();
var linesPanel = document.createElement('code');
linesPanel.className = 'hljs hljs-line-numbers';
linesPanel.style.float = 'left';
Expand All @@ -51,17 +64,26 @@
}
}

function getCountLines(text) {
function getCountLines(el, resize) {
var text = el.innerHTML;
if (text.length === 0) return 0;

var regExp = /\r\n|\r|\n/g;
var lines = text.match(regExp);
lines = lines ? lines.length : 0;

if (!text[text.length - 1].match(regExp)) {
lines += 1;
}

// Don't wrap in div if resize, we have already it
if(resize === true){
//wrap each line in a div
var textLines = text.split(regExp);
var textResult = "";
textLines.forEach(function(element) {
textResult += "<div class='hljs-line'>"+element+"</div>\n";
});
el.innerHTML = textResult;
}
return lines;
}
}(window));
}(window));