Chrome extension: How to insert or paste text into a tweet - google-chrome-extension

Question

driving me nuts.. backstory.. I enter a LOT of contests on twitter, and find myself repeating common tasks of copy/pasting profile links and tagging friends. :)
So i figured, and extension might make this easier!
manifest:
{
"name": "Context Menus Sample (with Event Page)",
"description": "Shows some of the features of the Context Menus API using an event page",
"version": "0.7",
"permissions": ["contextMenus", "tabs", "clipboardWrite", "clipboardRead" ],
"background": {
"persistent": false,
"scripts": ["sample.js"]
},
"manifest_version": 2
}
sample.js
function onClickHandler(info, tab) {
if (info.menuItemId == 'h_profile') {
// here is where it needs to put the text
}
};
chrome.contextMenus.onClicked.addListener(onClickHandler);
// Set up context menu tree at install time.
chrome.runtime.onInstalled.addListener(function() {
chrome.contextMenus.create({"title": "HELLCASE", "contexts":["editable"], "id": "hellcase"});
chrome.contextMenus.create({"title": "PROFILE", "contexts":["editable"], "parentId": "hellcase", "id": "h_profile"});
});
i can get it to trigger, like an alert on clicking.. but no matter what i try i cant get it to insert text into the focused textarea (div) on twitter
i think it could be because its just a div and not an actual element like a textarea...
seems like it should be easy, yet it wont work! lol
any ideas?
UPDATE: it seems I needed a few more things - i dont know if they were all needed but it now works!
{
"name": "TwitterHelper",
"description": "Helps to make entering contests easier!",
"version": "0.5",
"permissions": [
"contextMenus","tabs","activeTab"],
"background": {
"persistent": false,
"scripts": ["myscript.js"]
},
"browser_action": {
"default_icon": "icon.png"
},
"manifest_version": 2
}
myscript.js
function onClickHandler(info, tab) {
if (info.menuItemId == 'h_profile') {
SendText('profile');
}
};
function SendText(strText){
chrome.tabs.executeScript({
code: 'var temp = document.activeElement.innerHTML; document.activeElement.innerHTML=temp + "' + strText + '";'
});
}
chrome.contextMenus.onClicked.addListener(onClickHandler);
// Set up context menu tree at install time.
chrome.runtime.onInstalled.addListener(function() {
chrome.contextMenus.create({"title": "HELLCASE", "contexts":["editable"], "id": "hellcase"});
chrome.contextMenus.create({"title": "PROFILE", "contexts":["editable"], "parentId": "hellcase", "id": "h_profile"});
});