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Merge pull request #12712 from Snuffleupagus/issue-12704

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Attempt to handle collapsed outline items, in the default viewer, according to the specification (issue 12704, PR 10890 follow-up)
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Tim van der Meij 2020-12-09 23:43:07 +01:00 committed by GitHub
commit 93b3ba2abb
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1 changed files with 17 additions and 1 deletions
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18
web/pdf_outline_viewer.js
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@ -95,7 +95,23 @@ class PDFOutlineViewer extends BaseTreeViewer {
* @private * @private
*/ */
_addToggleButton(div, { count, items }) { _addToggleButton(div, { count, items }) {
const hidden = count < 0 && Math.abs(count) === items.length; let hidden = false;
if (count < 0) {
let totalCount = items.length;
if (totalCount > 0) {
const queue = [...items];
while (queue.length > 0) {
const { count: nestedCount, items: nestedItems } = queue.shift();
if (nestedCount > 0 && nestedItems.length > 0) {
totalCount += nestedItems.length;
queue.push(...nestedItems);
}
}
}
if (Math.abs(count) === totalCount) {
hidden = true;
}
}
super._addToggleButton(div, hidden); super._addToggleButton(div, hidden);
} }