undo | Undo.js - Undo | Editor library
kandi X-RAY | undo Summary
kandi X-RAY | undo Summary
Undo.js provides an abstraction for undoing and redoing any task. It can run both in the browser and on the server (targetted at node.js). It can be used to add undo and redo features to a custom application, e.g. undo and redo changing the priority of a task in a TODO list. It can also be used to undo and redo native browser features: Clicking a checkbox, editing a textbox and eventually, editing a contenteditable element. The base abstraction will stay independent of any framework, while plugins, like a command editing a sortable list, will likely depend on libraries such as jQuery.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of undo
undo Key Features
undo Examples and Code Snippets
def undo_move(self, action):
# these are the opposite of what U/D/L/R should normally do
if action == 'U':
self.i += 1
elif action == 'D':
self.i -= 1
elif action == 'R':
self.j -= 1
elif action == 'L':
sel
public void undoLastSpell() {
if (!undoStack.isEmpty()) {
var previousSpell = undoStack.pollLast();
redoStack.offerLast(previousSpell);
previousSpell.run();
}
}
public void castSpell(Runnable runnable) {
runnable.run();
undoStack.offerLast(runnable);
}
Community Discussions
Trending Discussions on undo
QUESTION
In tkinter I have made a notepad and also added a scrollbar to this notepad. The problem is when I click on the scrollbar (not using any arrow keys nor mouse scroll wheel)
I have tried google but I'm not the best at finding the right websites.
Heres the code to the notepad
...ANSWER
Answered 2021-Jun-15 at 17:13In your code, you aren't using the Listbox
. So, I suggest to remove that part completely and do this.
QUESTION
I'm wonder how can I undo my transpose operation. Let me be more specific in example:
...ANSWER
Answered 2021-Jun-15 at 15:47Using transpose, just follow the order. Your first permutation mapped dimensions as:
QUESTION
I created some entities using qt3d in QML. For example, this code shows a Scene3D
element that declares RootEntity
which is another QML element that contains the scene graph:
ANSWER
Answered 2021-Jun-13 at 17:22One approach is to maintain a global list of Qt.vector3d
elements and use it to record the position of the spheres that are removed with the "Undo" operation:
- When the user hits CTRL+Z, create a new
Qt.vector3d
object to store the position of the last sphere rendered (that is, the one that was last appended toentityModel
) and add that position to the global list of 3d vectors; - Then, to remove a sphere from the screen, call
entityModel.remove()
with the index of the sphere that needs to be erased;
The "Redo" operation simply does the opposite:
- When the user hits CTRL+Y, the last element of the global list of 3d vectors holds the location of the lastest sphere removed: append this position to
entityModel
so the sphere can be rendered again; - Then, remember to erase this position from the global list so the next Undo operation can render a different sphere;
RootEntity.qml:
QUESTION
I'm basically trying to disable the main body from scrolling when I have the main menu open. I'm hoping there's a solution without JS as I'm not too familiar with it, but don't mind with some help.
Here is my codepen, only using CSS. As you can see, the body in the background is still able to scroll when the menu is open. I need to disable that scrolling, but still be able to scroll within the menu itself. Thanks in advance!
...ANSWER
Answered 2021-Jun-13 at 17:32Here's a hack kind of way to do it without js. What I did was I made a container div for your entire content and gave it a class .contentWrap
I then added this code to your CSS:
QUESTION
I am using two instances of tinyMCE in shiny. I would like to save the content of both of these instances as a csv file using a single action button. I can use two action button but that defeats my goal. Not really great with javascript and how to make it work in R. I was able to source some code to save the output of first instance. Following is a working example.
...ANSWER
Answered 2021-Jun-13 at 13:37You can concatenate the input from two text in onclick
-
QUESTION
please help, I accidentally removed a huge portion of my codes in Google Script and accidentally saved it. Is there any way I can "Undo" and I get my previous version back?
...ANSWER
Answered 2021-Jun-12 at 17:44Try this:
- In the script editor, click Use legacy editor.
- In the left-hand pane, click the name of the script file you want to restore.
- Choose File > See version history.
- Select the version you want to restore.
- Click Restore.
Alternatively, use the revision history list to copy the code of the version you want to keep and paste it elsewhere.
To return to the new Monaco editor, click Use new editor.
QUESTION
I have a fresh install of Visual Studio Community 2019 on a new computer. I started a web app project, ran it for the first time, and then when prompted to accept the self-signed certificate I somehow managed to click "Do Not Ask Again" and "No".
At this point, when running the web app, I get a ERR_CONNECTION_RESET and can't connect to anything. I've tried deleting and recreating the certificate using advice listed here: Re-Installing Visual Studio 2017 Localhost Certificate, as well as reinstalling VS entirely, but neither worked.
To be clear, I messed up, not Visual Studio. As far as I can tell, there's nothing particular about my set up or environment, and I've built web apps in Visual Studio before, I just clicked the wrong things this time and am trying to undo that without factory resetting this entire PC.
Does anyone have any idea how I can trigger that original prompt in Visual Studio and get a properly signed certificate to run a web application?
[SOLVED]
...ANSWER
Answered 2021-Jun-02 at 19:39You can create a self-signed certificate using dotnet dev-certs
It'll be stored in your PC's certificate store and VS will use it when scaffolding new projects with SSL support.
QUESTION
I try to focus the TinyMCE text editor by pressing a button, with auto_focus
it does not work, unfortunately.
My TinyMCE component use:
ANSWER
Answered 2021-Jun-11 at 08:09I found the solution myself pretty quickly:
I used the useEffect
hook and the editorRef.current.focus()
function:
QUESTION
ANSWER
Answered 2021-Jun-10 at 18:59When doing live debugging, there's not much use of an undo functionality in general. If a thread ends, you can't simply recreate it. If you step over a line, you can't easily go back to the state before. If you close a file handle, you can't easily reopen it.
If you changed memory, when should WinDbg disable the ability to undo that? Once that memory was written to by the process? Or do you want to be able to undo even if the memory was written to after your edit?
To what memory content should be undone then? To the values you entered (i.e. undo the action done by the process) or to the values before you entered them (i.e. undo the edits made by you, including the changes made by the process) or undo only those values which were edited by you and not changed by the process yet?
As you see, implementing an undo functionality in a debugging scenario can become really difficult. IMHO, WinDbg was never designed to have undo functionality.
I would even say people do not use the memory window to edit memory content. Why that?
When you do a debugging session, you want your steps to be recorded so that you yourself or someone else can verify and reproduce your actions. In such a scenario, you use .logopen
and log everything you do. Actions done outside the command window will not be recorded and thus break the verification workflow.
What do you do instead? You use one of the d
isplay commands (db
, dd
, dp
or similar) to show the memory contents before the edit. You then use an e
dit command (eb
, ed
, ...) to change the memory. Whenever you want the old values back, you look at the previous output of the d
command and e
those values again.
QUESTION
I have included django-tinymce module in my django 3.1 project. However, the tinymce editor disappeared from my pages and I don't know why. When I run the project in my localhost I get a 404 on init_tinymce.js, a folder that is not in my project and not specified in the django-tinymce project.
I hardly touched anything but it suddenly did not show on my pages. Here is the log from my console:
...ANSWER
Answered 2021-Jun-09 at 06:13If you don't specifically need to change the default TINYMCE_JS_URL
and TINYMCE_JS_ROOT
settings, don't set them in your project. Did you include 'tinymce' in your INSTALLED_APPS
?
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