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-rw-r--r--ext/mixed/js/html-template-collection.js29
1 files changed, 29 insertions, 0 deletions
diff --git a/ext/mixed/js/html-template-collection.js b/ext/mixed/js/html-template-collection.js
index 56da68b8..d3e2e6fd 100644
--- a/ext/mixed/js/html-template-collection.js
+++ b/ext/mixed/js/html-template-collection.js
@@ -29,6 +29,7 @@ class HtmlTemplateCollection {
for (const template of sourceNode.querySelectorAll('template')) {
const match = pattern.exec(template.id);
if (match === null) { continue; }
+ this._prepareTemplate(template);
this._templates.set(match[1], template);
}
}
@@ -42,4 +43,32 @@ class HtmlTemplateCollection {
const template = this._templates.get(name);
return document.importNode(template.content, true);
}
+
+ // Private
+
+ _prepareTemplate(template) {
+ if (template.dataset.removeWhitespaceText === 'true') {
+ this._removeWhitespaceText(template);
+ }
+ }
+
+ _removeWhitespaceText(template) {
+ const {content} = template;
+ const {TEXT_NODE} = Node;
+ const iterator = document.createNodeIterator(content, NodeFilter.SHOW_TEXT);
+ const removeNodes = [];
+ while (true) {
+ const node = iterator.nextNode();
+ if (node === null) { break; }
+ if (node.nodeType === TEXT_NODE && node.nodeValue.trim().length === 0) {
+ removeNodes.push(node);
+ }
+ }
+ for (const node of removeNodes) {
+ const {parentNode} = node;
+ if (parentNode !== null) {
+ parentNode.removeChild(node);
+ }
+ }
+ }
}