Can I access JavaScript snippets using chrome.devtools API?

问题

I want to make a Chrome Developer Tools Extensions that needs access to newly added snippets in sources pane.

Does chrome.devtools API have any way to access snippets?

enter image description here

回答1:

Yes, you can do it through chrome.devtools.inspectedWindow API()

You can track

a) Content of all Snippets available

b) When ever a new Snippet is added and its content

c) When ever a Snippet is Updated with new content\modified.

How ever for enabling the debugging etc you have to enable experimental developer flags.

You can take following code as a reference and you can extend it as per your requirement.

manifest.json

You have to add

"devtools_page":"devtools.html",

code to your manifest.json file

Sample manifest.json

{
"name":"Snippets Demo",
"description":"This demonstrates How to get content from Snippets API",
"devtools_page":"devtools.html",
"manifest_version":2,
"version":"2"
}

devtools.html

Add devtools.js to avoid inline scripting

Sample devtools.html

<html>
<head>
<script src="devtools.js"></script>
</head>
<body>
</body>
</html>

devtools.js

Add related code for

a) chrome.devtools.inspectedWindow.getResources

b) chrome.devtools.inspectedWindow.onResourceAdded.addListener

c) chrome.devtools.inspectedWindow.onResourceContentCommitted.addListener()

Sample devtools.js

//Fetching all available resources and filtering using name of script snippet added 
chrome.devtools.inspectedWindow.getResources(function (resources){

    // This function returns array of resources available in the current window

    for(i=0;i<resources.length;i++){

        // Matching with current snippet URL

        if(resources[i].url == "Script snippet #1"){
            resources[i].getContent(function (content,encoding){

                alert("encoding is " + encoding);
                alert("content is  "+content);
            });
        }
    }

});

//This can be used for identifying when ever a new resource is added

chrome.devtools.inspectedWindow.onResourceAdded.addListener(function (resource){
    alert("resources added" + resource.url);
    alert("resources content added " + resource.content);
});

//This can be used to detect when ever a resource code is changed/updated

chrome.devtools.inspectedWindow.onResourceContentCommitted.addListener(function(resource,content){
    alert("Resource Changed");
    alert("New Content  " + content);
    alert("New Resource  Object is " + resource);
});

After putting all the 3 codes together you get

Output 1)

enter image description here