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Cache an throttle the markdown rendering in kanban

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This commit is contained in:
yflory
2020-03-12 13:40:58 +01:00
parent 77894b5336
commit 62a12e8825
2 changed files with 28 additions and 4 deletions
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20
www/kanban/jkanban.js
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@@ -45,6 +45,7 @@
this.drake = '';
this.drakeBoard = '';
this.addItemButton = false;
this.cache = {};
defaults = {
element: '',
gutter: '15px',
@@ -84,6 +85,12 @@
this.options = __extendDefaults(defaults, arguments[0]);
}
var checkCache = function (boards) {
Object.keys(self.cache).forEach(function (id) {
if (boards.items[id]) { return; }
delete self.cache[id];
});
};
var removeUnusedTags = function (boards) {
var tags = self.options.getTags(boards);
var filter = self.options.tags || [];
@@ -355,6 +362,7 @@
// If it's a deletion, remove the item data
if (!board) {
delete boards.items[eid];
delete self.cache[eid];
removeUnusedTags(boards);
self.options.refresh();
return;
@@ -414,7 +422,16 @@
}
}
if (element.body) {
var html = self.renderMd(element.body);
var html;
if (self.cache[element.id] && self.cache[element.id].body === element.body) {
html = self.cache[element.id].html;
} else {
html = self.renderMd(element.body);
self.cache[element.id] = {
body: element.body,
html: html
};
}
var nodeBody = document.createElement('div');
nodeBody.classList.add('kanban-item-body');
$(nodeBody).on('click', 'a', function (e) {
@@ -604,6 +621,7 @@
this.setBoards = function (boards) {
var scroll = {};
// Fix the tags
checkCache(boards);
removeUnusedTags(boards);
// Get horizontal scroll
var $el = $(self.element);