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fix: scroll bug

This commit is contained in:
xiangyu 2022-05-06 00:37:19 +08:00
parent 20cd97d6a9
commit 7c66352b7c
1 changed files with 27 additions and 4 deletions
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31
src/views.ts
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@ -158,13 +158,36 @@ class AddonViews extends AddonBase {
async scrollToLine(instance: EditorInstance, lineIndex: number) {
await instance._initPromise;
let editor = this.getEditor(instance._iframeWindow.document);
if (lineIndex > editor.children.length) {
lineIndex = editor.children.length - 1;
} else if (lineIndex < 0) {
const indexMap = [];
const diveTagNames = ["OL", "UL", "LI"];
function dive(e: Element, targetIndex: string) {
if (diveTagNames.indexOf(e.tagName) !== -1) {
if (e.tagName === "LI") {
indexMap.push(targetIndex);
}
for (let i in e.children) {
dive(e.children[i], targetIndex);
}
}
}
for (let i in editor.children) {
const ele = editor.children[i];
if (diveTagNames.indexOf(ele.tagName) !== -1) {
dive(ele, i);
} else {
indexMap.push(i);
}
}
if (lineIndex >= indexMap.length) {
lineIndex = indexMap.length - 1;
} else if (indexMap.length < 0) {
lineIndex = 0;
}
const mappedIndex = indexMap[lineIndex];
// @ts-ignore
editor.parentNode.scrollTo(0, editor.children[lineIndex].offsetTop);
editor.parentNode.scrollTo(0, editor.children[mappedIndex].offsetTop);
}
addNewKnowledgeButton() {