ChromeDevTools / awesome-chrome-devtools

Awesome tooling and resources in the Chrome DevTools & DevTools Protocol ecosystem
https://github.com/ChromeDevTools/awesome-chrome-devtools#readme
Creative Commons Zero v1.0 Universal
6.09k stars 352 forks source link

Listen to multiple selections of the same element in the elements panel #96

Open beeirl opened 5 years ago

beeirl commented 5 years ago

In my Google Chrome DevTools Extension I try to listen to the selections in the DevTools panel "Elements". In particular, it should be possible to listen to the selection of the already selected element.

My current implementation method revolves around the function chrome.devtools.panels.elements.onSelectionChanged. The function name already suggests that it is only possible to react to elements that are not currently selected. Therefore I tried to reset or remove the current selection with the help variable $0, to be able to listen to the same element again - unfortunately without success.

My goal is to somehow listen to every click/selection in the elements panel. In summary, I am looking for an onSelection listener instead of an onSelectonChange listener.

Here's my code I've tried:

chrome.devtools.panels.elements.createSidebarPane(
    "Selector",
    function(sidebar) {
        // It fires if I'm selecting a specific DOM element via the elements panel the first time
        // It won't fire if I'm selecting the same DOM element again
        chrome.devtools.panels.elements.onSelectionChanged.addListener(() => {
            chrome.devtools.inspectedWindow.eval(`(${getSelector})()`,
            selector => {
                console.log(selector)
                // Here I tried to reset the current selection...
                // I've already debugged it: I can assign a value to $0, 
                // but this implies that the value remains constant even 
                // after a new selection.
                chrome.devtools.inspectedWindow.eval('$0 = undefined')
            })
        })
    }
)

I am wondering if there is a way to change the selector programmatically...

Garbee commented 4 years ago

This seems like a feature request against the DevTools API that we should get routed to the appropriate team (not sure if that is Extension API or DevTools itself.)

I'll ask around and once I know what team this should go to I can give instructions on how to get you there.