VSCode Extension API - Identify file or folder click in explorer context menu

Question

VSCode 1.3 has added support for adding commands to context menus. Is there a way to identify whether a file or folder is clicked to open the explorer context menu?

Answer 1

Regarding obtaining a comprehensive list of context keys: in recent VSCode versions, there's a Developer: Inspect Context Keys command. After executing the command, it lets you pick a UI element:

After that, the dev console opens, and you can expand the logged object that contains a full list of context keys and their current values in this "scope":

Answer 2

You can get the list of language ids like this...

vscode.languages.getLanguages().then(l => console.log('languages', l));

I still haven't figured out how to determine if the item that was right clicked is a directory. If someone figures it out please let me know.

Answer 3

A write up about the feature is here. But basically:

• the when is the same as the keybindings-when and can use the same keys
• the when can use two new keys resourceScheme and resourceLangId which are available without an editor - think of the explorer context menu
• the when can be a boolean configuration value, e.g config.editor.lineNumbers

My menu:

"menus":{
    "explorer/context": [
        {
            "when": "resourceLangId == sql",
            "command": "extension.myCmd"
        }
    ]

Answer 4

You can use "when": "explorerResourceIsFolder".

I had to dig through the code to find it (I was actually writing up a response to say it didn't exist and enumerating the possible clause values when I saw it).

As of v1.10.1:

config.<any_config_path_here>
editorIsOpen
explorerResourceIsFolder
explorerViewletFocus
explorerViewletVisible
filesExplorerFocus
globalMessageVisible
inDebugMode
inQuickOpen
inZenMode
listFocus
openEditorsFocus
resource (Uri information: path, query, scheme, etc)
resourceFilename
resourceLangId
resourceScheme
scmProvider
textCompareEditorVisible

I've submitted an issue to improve the documentation for this.

Answer 5

https://code.visualstudio.com/docs/getstarted/keybindings#_when-clause-contexts

is file: "when": "!explorerResourceIsFolder"

is dir: "when": "explorerResourceIsFolder"