Is that possible calling content script method by context menu item in Chrome extension?
You can refer to following code as a reference, where upon click of a context menu a function in content script is invoked.
Sample Demonstration
manifest.json
{ "name": "Content to Context menu", "description": "http://stackoverflow.com/questions/14452777/is-that-possible-calling-content-script-method-by-context-menu-item-in-chrome-ex", "version": "1", "manifest_version": 2, "background": { "scripts": [ "background.js" ] }, "content_scripts": [ { "matches": [ "<all_urls>" ], "js": [ "myscript.js" ] } ], "permissions": [ "contextMenus" ]}background.js
function genericOnClick(info, tab) { console.log("item " + info.menuItemId + " was clicked"); console.log("info: " + JSON.stringify(info)); console.log("tab: " + JSON.stringify(tab)); //Add all you functional Logic here chrome.tabs.query({ "active": true, "currentWindow": true }, function (tabs) { chrome.tabs.sendMessage(tabs[0].id, { "functiontoInvoke": "showInfo" }); });}// Create one test item for each context type.var contexts = ["page", "selection", "link", "editable", "image", "video", "audio"];for (var i = 0; i < contexts.length; i++) { var context = contexts[i]; var title = "Test '" + context + "' menu item"; var id = chrome.contextMenus.create({ "title": title, "contexts": [context], "onclick": genericOnClick }); console.log("'" + context + "' item:" + id);}myscript.js
var showInfo = function () { console.log("Show Info is invoked");}var showAnotherInfo = function () { console.log("Show Another Info");}chrome.extension.onMessage.addListener(function (message, sender, callback) { if (message.functiontoInvoke == "showInfo") { showInfo(); } if (message.functiontoInvoke == "showAnotherInfo") { showAnotherInfo(); }});