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-rw-r--r--ext/mixed/js/dom.js38
1 files changed, 38 insertions, 0 deletions
diff --git a/ext/mixed/js/dom.js b/ext/mixed/js/dom.js
index 0e8f4462..05764443 100644
--- a/ext/mixed/js/dom.js
+++ b/ext/mixed/js/dom.js
@@ -86,4 +86,42 @@ class DOM {
null
);
}
+
+ static getNodesInRange(range) {
+ const end = range.endContainer;
+ const nodes = [];
+ for (let node = range.startContainer; node !== null; node = DOM.getNextNode(node)) {
+ nodes.push(node);
+ if (node === end) { break; }
+ }
+ return nodes;
+ }
+
+ static getNextNode(node) {
+ let next = node.firstChild;
+ if (next === null) {
+ while (true) {
+ next = node.nextSibling;
+ if (next !== null) { break; }
+
+ next = node.parentNode;
+ if (next === null) { break; }
+
+ node = next;
+ }
+ }
+ return next;
+ }
+
+ static anyNodeMatchesSelector(nodes, selector) {
+ const ELEMENT_NODE = Node.ELEMENT_NODE;
+ for (let node of nodes) {
+ for (; node !== null; node = node.parentNode) {
+ if (node.nodeType !== ELEMENT_NODE) { continue; }
+ if (node.matches(selector)) { return true; }
+ break;
+ }
+ }
+ return false;
+ }
}