Hi Andrew There were two reasons I dropped the undo/redo buttons, one superficial, and one more fundamental:
* The endless problems I encountered getting the execCommand() call to work consistently across browsers. This is a notorious area for poor cross-browser compatibility, and there is every indication that it’s impossible to make the native execCommand(“undo”) work with textareas under Firefox. * The deeper problem that the OS undo/redo only extends back to the last time that the textarea was refreshed. To an end user, the result is highly confusing: one can only undo back to an arbitrary and unpredictable point So, my conclusion was that decent undo/redo handling will require us to engineer the undo/redo logic ourselves. Best wishes Jeremy > On 8 May 2016, at 10:10, Andrew <[email protected]> wrote: > > I have still been trying to figure out why undo was acting strange and I am > so close. I think that the functionality was all there. It is just a matter > of doing something like the following, but I can't quite figure it out how to > capture the text of the hidden dummy iframe after the undo but nothing seems > to work: > in undo.js: > document.execCommand("undo", false, null); > operation.replacement = textarea.value; > > or > document.execCommand("undo", false, null); > operation.replacement = > this.parentDomNode.getElementsByTagName("textarea")[0].value; > > -- > You received this message because you are subscribed to the Google Groups > "TiddlyWiki" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at https://groups.google.com/group/tiddlywiki > <https://groups.google.com/group/tiddlywiki>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tiddlywiki/18141e07-71d2-4f69-b93b-44b2f7833ac9%40googlegroups.com > > <https://groups.google.com/d/msgid/tiddlywiki/18141e07-71d2-4f69-b93b-44b2f7833ac9%40googlegroups.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/105C7FD9-0AB1-4575-B0B8-9FADE98721BE%40gmail.com. For more options, visit https://groups.google.com/d/optout.
