const snippet_actions = [
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{
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icon: 'copy',
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id: 'copy',
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title: copy_text,
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show: true
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},
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{
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icon: 'order',
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id: 'lines',
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title: toggle_line_numbers_text,
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show: true
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},
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{
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icon: 'carly',
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id: 'wrap',
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title: toggle_line_wrap_text,
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show: false
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},
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{
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icon: 'expand',
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id: 'expand',
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title: resize_snippet,
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show: false
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}
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];
|
|
function addLines(block) {
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let text = block.textContent;
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const snippet_fragment = [];
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if (text.includes('\n') && block.closest('pre') && !block.children.length) {
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text = text.split('\n');
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text.forEach((text_node, index) => {
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if(text_node.trim().length) {
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const new_node = `
|
<span class="line line-flex">
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<span class="ln">${index + 1}</span>
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<span class="cl">${text_node.trim()}</span>
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</span>`.trim();
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// snippet_fragment.push(':;:');
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snippet_fragment.push(new_node);
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block.closest('pre').className = 'chroma';
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pushClass(block, 'language-unknown');
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block.dataset.lang = not_set;
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}
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});
|
|
block.innerHTML = snippet_fragment.join('').trim(' ');
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}
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}
|
|
function wrapOrphanedPreElements() {
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const pres = elems('pre');
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Array.from(pres).forEach(function(pre){
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const parent = pre.parentNode;
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const is_orpaned = !containsClass(parent, highlight);
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if(is_orpaned) {
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const pre_wrapper = createEl();
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pre_wrapper.className = highlight;
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const outer_wrapper = createEl();
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outer_wrapper.className = highlight_wrap;
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wrapEl(pre, pre_wrapper);
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wrapEl(pre_wrapper, outer_wrapper);
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}
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})
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/*
|
@Todo
|
1. Add UI control to orphaned blocks
|
*/
|
}
|
|
wrapOrphanedPreElements();
|
|
function codeBlocks() {
|
const marked_code_blocks = elems('code');
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const blocks = Array.from(marked_code_blocks).filter(function(block){
|
addLines(block);
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return block.closest("pre") && !Array.from(block.classList).includes('noClass');
|
}).map(function(block){
|
return block
|
});
|
return blocks;
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}
|
|
function codeBlockFits(block) {
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// return false if codeblock overflows
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const block_width = block.offsetWidth;
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const highlight_block_width = block.closest(`.${highlight}`).offsetWidth;
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return block_width <= highlight_block_width ? true : false;
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}
|
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function maxHeightIsSet(elem) {
|
let max_height = elem.style.maxHeight;
|
return max_height.includes('px')
|
}
|
|
function restrainCodeBlockHeight(lines) {
|
const last_line = lines[max_lines-1];
|
let max_code_block_height = full_height;
|
if(last_line) {
|
const last_line_pos = last_line.offsetTop;
|
if(last_line_pos !== 0) {
|
max_code_block_height = `${last_line_pos}px`;
|
const codeBlock = lines[0].parentNode;
|
const outer_block = codeBlock.closest(`.${highlight}`);
|
const is_expanded = containsClass(outer_block, panel_expanded);
|
if(!is_expanded) {
|
codeBlock.dataset.height = max_code_block_height;
|
codeBlock.style.maxHeight = max_code_block_height;
|
}
|
}
|
}
|
}
|
|
const blocks = codeBlocks();
|
|
function collapseCodeBlock(block) {
|
const lines = elems(line_class, block);
|
const code_lines = lines.length;
|
if (code_lines > max_lines) {
|
const expand_dot = createEl()
|
pushClass(expand_dot, panel_expand);
|
pushClass(expand_dot, panel_from);
|
expand_dot.title = "Toggle snippet";
|
expand_dot.textContent = "...";
|
const outer_block = block.closest('.highlight');
|
window.setTimeout(function(){
|
const expand_icon = outer_block.nextElementSibling.lastElementChild;
|
deleteClass(expand_icon, panel_hide);
|
}, 150)
|
|
restrainCodeBlockHeight(lines);
|
const highlight_element = block.parentNode.parentNode;
|
highlight_element.appendChild(expand_dot);
|
}
|
}
|
|
blocks.forEach(function(block){
|
collapseCodeBlock(block);
|
})
|
|
function actionPanel() {
|
const panel = createEl();
|
panel.className = panel_box;
|
|
snippet_actions.forEach(function(button) {
|
// create button
|
const btn = createEl('a');
|
btn.href = '#';
|
btn.title = button.title;
|
btn.className = `icon panel_icon panel_${button.id}`;
|
button.show ? false : pushClass(btn, panel_hide);
|
// load icon inside button
|
loadSvg(button.icon, btn);
|
// append button on panel
|
panel.appendChild(btn);
|
});
|
|
return panel;
|
}
|
|
function toggleLineNumbers(elems) {
|
if(elems) {
|
// mark the code element when there are no lines
|
elems.forEach(elem => modifyClass(elem, 'pre_nolines'));
|
restrainCodeBlockHeight(elems);
|
}
|
}
|
|
function toggleLineWrap(elem) {
|
modifyClass(elem, 'pre_wrap');
|
// retain max number of code lines on line wrap
|
const lines = elems('.ln', elem);
|
restrainCodeBlockHeight(lines);
|
}
|
|
function copyCode(code_element) {
|
|
const copy_btn = code_element.parentNode.parentNode.querySelector(`.${copy_id}`);
|
const original_title = copy_btn.title;
|
loadSvg('check', copy_btn);
|
copy_btn.title = copied_text;
|
|
// remove line numbers before copying
|
code_element = code_element.cloneNode(true);
|
const line_numbers = elems('.ln', code_element);
|
line_numbers.length ? line_numbers.forEach(line => line.remove()) : false;
|
|
// remove leading '$' from all shell snippets
|
let lines = elems('span', code_element);
|
lines.forEach(line => {
|
const text = line.textContent.trim(' ');
|
if(text.indexOf('$') === 0) {
|
line.textContent = line.textContent.replace('$ ', '');
|
}
|
})
|
const snippet = code_element.textContent.trim(' ');
|
// copy code
|
copyToClipboard(snippet);
|
|
setTimeout(function() {
|
copy_btn.title = original_title;
|
loadSvg('copy', copy_btn);
|
}, 2250);
|
}
|
|
(function codeActions(){
|
const highlight_wrap_id = highlight_wrap;
|
blocks.forEach(function(block){
|
// disable line numbers if disabled globally
|
show_lines === false ? toggleLineNumbers(elems('.ln', block)) : false;
|
|
const highlight_element = block.parentNode.parentNode;
|
// wrap code block in a div
|
const highlight_wrapper = createEl();
|
highlight_wrapper.className = highlight_wrap_id;
|
|
wrapEl(highlight_element, highlight_wrapper);
|
|
const panel = actionPanel();
|
// show wrap icon only if the code block needs wrapping
|
const wrap_icon = elem(`.${wrap_id}`, panel);
|
codeBlockFits(block) ? false : deleteClass(wrap_icon, panel_hide);
|
|
// append buttons
|
highlight_wrapper.appendChild(panel);
|
});
|
|
function isItem(target, id) {
|
// if is item or within item
|
return target.matches(`.${id}`) || target.closest(`.${id}`);
|
}
|
|
function showActive(target, targetClass) {
|
const target_element = target.matches(`.${targetClass}`) ? target : target.closest(`.${targetClass}`);
|
|
deleteClass(target_element, active);
|
setTimeout(function() {
|
modifyClass(target_element, active)
|
}, 50)
|
}
|
|
doc.addEventListener('click', function(event){
|
// copy code block
|
const target = event.target;
|
const is_copy_icon = isItem(target, copy_id);
|
const is_wrap_icon = isItem(target, wrap_id);
|
const is_lines_icon = isItem(target, lines_id);
|
const is_expand_icon = isItem(target, panel_expand);
|
const is_actionable = is_copy_icon || is_wrap_icon || is_lines_icon || is_expand_icon;
|
|
if(is_actionable) {
|
event.preventDefault();
|
showActive(target, 'icon');
|
const code_element = target.closest(`.${highlight_wrap_id}`).firstElementChild.firstElementChild;
|
let lineNumbers = elems('.ln', code_element);
|
|
is_wrap_icon ? toggleLineWrap(code_element) : false;
|
is_lines_icon ? toggleLineNumbers(lineNumbers) : false;
|
|
if (is_expand_icon) {
|
let this_code_block = code_element.firstElementChild;
|
const outer_block = this_code_block.closest('.highlight');
|
if(maxHeightIsSet(this_code_block)) {
|
this_code_block.style.maxHeight = full_height;
|
// mark code block as expanded
|
pushClass(outer_block, panel_expanded)
|
} else {
|
this_code_block.style.maxHeight = this_code_block.dataset.height;
|
// unmark code block as expanded
|
deleteClass(outer_block, panel_expanded)
|
}
|
}
|
|
is_copy_icon ? copyCode(code_element) : false;
|
}
|
});
|
|
(function addLangLabel() {
|
blocks.forEach(block => {
|
let label = block.dataset.lang;
|
const is_shell_based = shell_based.includes(label);
|
if(is_shell_based) {
|
const lines = elems(line_class, block);
|
Array.from(lines).forEach(line => {
|
line = line.lastElementChild;
|
let line_contents = line.textContent.trim(' ');
|
line_contents.indexOf('$') !== 0 && line_contents.trim(' ').length ? pushClass(line, 'shell') : false;
|
});
|
}
|
|
label = label === 'sh' ? 'shell' : label;
|
if(label !== "fallback") {
|
const label_el = createEl();
|
label_el.textContent = label;
|
pushClass(label_el, 'lang');
|
block.closest(`.${highlight_wrap}`).appendChild(label_el);
|
}
|
});
|
})();
|
})();
|
