VSCode: Toggle between defined texts - visual-studio-code

Question

I have to toggle between two texts example ABC and MNO by any keyboard shortcut or mouse click.
Like if I double click and selected word is ABC, It should be changed to MNO or vice versa.
Or after selecting the word I can run some keyboard shortcut to toggle.
Or if current line has ABC it gets changed to MNO with a double click or keyboard shortcut.
I know it's a very weird request but I have a use case. Any sort of work around will work even if I have to write an extension.

Answer 1

I have written an extension Replace On that does this "immediate" replace on double click.
You can add the following to your settings.json
"replace-on.selection-changed": {
"all": {
"ABC": {
"replace": "MNO",
"literal": true,
"immediate": true
},
"MNO": {
"replace": "ABC",
"literal": true,
"immediate": true
}
},
"javascript": {
"foo": {
"replace": "Bar",
"flags": "i"
}
}
}
I have added, for the example, that you could limit the rules for a particular languageId.
In the next version I will add the possibility to change the current "word" with the non-immediate rules by invoking a command. From command palette or key binding.

Answer 2

I forgot that I made an extension that does this pretty easily, see Find and Transform.
This keybinding:
{
"key": "alt+y", // whatever keybinding you want
"command": "findInCurrentFile",
"args": {
"find": "(Cookie)|(SkipCookie)",
"replace": "${1:+SkipCookie}${2:+Cookie}",
"isRegex": true,
"restrictFind": "line"
// "matchCase": true
}
}
That will perform a conditional replacement of Cookie with SkipCookie and vice versa. Replacing all occurrences of each on the line.
"Or after selecting the word I can run some keyboard shortcut to toggle."
You can make a snippet do this with a conditional replacement. In your keybindings.json:
{
"key": "alt+t", // whatever keybinding you want
"command": "editor.action.insertSnippet",
"args": {
"snippet": "${TM_SELECTED_TEXT/(ABC)|(MNO)/${1:+MNO}${2:+ABC}/}"
},
"when": "editorTextFocus && editorHasSelection"
}
If the selected text is ABC it will be replaced with MNO and vice versa. It will work with multiple cursors too.
${1:+MNO} means if there is a capture group 1, i.e., ABC replace it with MNO.
This form works to toggle all occurrences in a line if you select the line first and then trigger the keybinding:
{
"key": "alt+t",
"command": "editor.action.insertSnippet",
"args": {
// "snippet": "${TM_SELECTED_TEXT/(ABC)|(MNO)/${1:+MNO}${2:+ABC}/}"
"snippet": "${TM_CURRENT_LINE/(.*?)((ABC)|(MNO))/$1${3:+MNO}${4:+ABC}/g}"
},
// "when": "editorTextFocus && editorHasSelection"
"when": "editorTextFocus"
}