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Code Issues Releases Wiki Activity

Fix issue with scrolling while editting long tiddlers in Firefox

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This commit is contained in:
Jeremy Ruston 2013-05-21 17:54:10 +01:00
parent 13b3891ea4
commit 4ad6f05010
1 changed files with 10 additions and 2 deletions
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12
core/modules/widgets/edit/editors/texteditor.js
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@ -127,12 +127,20 @@ TextEditor.prototype.fixHeight = function() {
$tw.utils.nextTick(function() {
// Resize the textarea to fit its content
var textarea = self.editWidget.children[0].domNode,
scrollTop = self.editWidget.renderer.renderTree.document.body.scrollTop;
scrollPosition = $tw.utils.getScrollPosition(),
scrollTop = scrollPosition.y;
// Set its height to auto so that it snaps to the correct height
textarea.style.height = "auto";
// Calculate the revised height
var newHeight = Math.max(textarea.scrollHeight + textarea.offsetHeight - textarea.clientHeight,MIN_TEXT_AREA_HEIGHT);
// Only try to change the height if it has changed
if(newHeight !== textarea.offsetHeight) {
textarea.style.height = newHeight + "px";
self.editWidget.renderer.renderTree.document.body.scrollTop = scrollTop;
// Make sure that the dimensions of the textarea are recalculated
$tw.utils.forceLayout(textarea);
// Check that the scroll position is still visible before trying to scroll back to it
scrollTop = Math.min(scrollTop,self.editWidget.renderer.renderTree.document.body.scrollHeight - window.innerHeight);
window.scrollTo(scrollPosition.x,scrollTop);
}
});
}