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fix(#228): Fixes issue where a single scroll event would cause multiple updates and calculate view placement incorrectly

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This commit is contained in:
Jamie Peabody
2026-02-28 09:04:47 +00:00
parent fa30d277e5
commit 9834f0964a
1 changed files with 4 additions and 12 deletions
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16
src/diff-view.js
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@@ -130,7 +130,6 @@ CodeMirrorDiffView.prototype.scrollToDiff = function(direction) {
this.trace('change', 'current-diff', this._current_diff);
// _current_diff changed, refresh the view
this._scroll_to_change(this.changes[this._current_diff]);
this.setChanges(this.changes);
};
CodeMirrorDiffView.prototype.mergeCurrentChange = function(side) {
@@ -149,7 +148,6 @@ CodeMirrorDiffView.prototype.scrollTo = function(side, num) {
const ed = this.editor[side];
ed.setCursor(num);
ed.centerOnCursor();
this._renderChanges();
this.el.dispatchEvent(new Event('updated'));
};
@@ -556,20 +554,12 @@ CodeMirrorDiffView.prototype._scroll_to_change = function(change) {
if (!change) {
return;
}
const {
lhs: led,
rhs: red
} = this.editor;
// set cursors
const llf = Math.max(change['lhs-line-from'], 0);
const rlf = Math.max(change['rhs-line-from'], 0);
led.setCursor(llf, 0);
red.setCursor(rlf, 0);
if (change['lhs-line-to'] >= 0) {
this.scrollTo('lhs', change['lhs-line-to']);
} else if (change['rhs-line-to'] >= 0) {
this.scrollTo('rhs', change['rhs-line-to']);
}
const { lhs: led } = this.editor;
led.focus();
};
@@ -1185,7 +1175,9 @@ CodeMirrorDiffView.prototype._renderDiff = function(changes) {
ctx_rhs.fillRect(1.5, rfrom, 4.5, rto);
this._handleLhsMarginClick = function (ev) {
const y = ev.pageY - ex.lhs_xyoffset.top - (lto / 2);
// `top` accounts for the editor starting at position other than 0 on page
const { top } = ev.currentTarget.offsetParent.getBoundingClientRect();
const y = (ev.pageY - top) - ex.lhs_xyoffset.top - (lto / 2);
const sto = Math.max(0, (y / mcanvas_lhs.height) * ex.lhs_scroller.scrollHeight);
ex.lhs_scroller.scrollTo({ top: sto });
};