// ==UserScript==
// @include http://*
// @include https://*
// ==/UserScript==

var ACTION_CAPTURE_SELECTION = 'capture_selection';
var ACTION_SEND_PAGE = 'send_to_phone';
var ACTION_CLOSE_TAB = 'close_tab';

var currentUrl = document.location.href;

opera.extension.addEventListener( 'message', function( message ) {
	if( message.data.action === ACTION_CAPTURE_SELECTION ) {
		var pageInfo = {
			action: ACTION_SEND_PAGE,
			data: {
				link: currentUrl,
				title: document.title,
				selection: window.getSelection() ? window.getSelection().toString() : null
			}
		};
		// URL overrides
		if ( currentUrl.match( /^http[s]?:\/\/maps\.google\./i ) ||
				currentUrl.match( /^http[s]?:\/\/www\.google\.[a-z]{2,3}(\.[a-z]{2})\/maps/i ) ) {
		  var link = document.getElementById('link');
		  if (link && link.href)
			  pageInfo.data.link = link.href;
		}
		opera.extension.postMessage( pageInfo );
	}
}, false);

function findAndReplace(searchText, replacement, searchNode) {
    if (!searchText || typeof replacement === 'undefined') {
        // Throw error here if you want...
        return;
    }
    var regex = typeof searchText === 'string' ?
                new RegExp(searchText, 'g') : searchText,
        childNodes = (searchNode || document.body).childNodes,
        cnLength = childNodes.length,
        excludes = 'html,head,style,title,link,meta,script,object,iframe';
    while (cnLength--) {
        var currentNode = childNodes[cnLength];
        if (currentNode.nodeType === 1 &&
            (excludes + ',').indexOf(currentNode.nodeName.toLowerCase() + ',') === -1) {
            arguments.callee(searchText, replacement, currentNode);
        }
        if (currentNode.nodeType !== 3 || !regex.test(currentNode.data) ) {
            continue;
        }
        var parent = currentNode.parentNode,
            frag = (function(){
                var html = currentNode.data.replace(regex, replacement),
                    wrap = document.createElement('div'),
                    frag = document.createDocumentFragment();
                wrap.innerHTML = html;
                while (wrap.firstChild) {
                    frag.appendChild(wrap.firstChild);
                }
                return frag;
            })();
        parent.insertBefore(frag, currentNode);
        parent.removeChild(currentNode);
    }
}
window.addEventListener( 'DOMContentLoaded', function() {
	if( currentUrl.match( /^http[s]?:\/\/www\.google\.com\/accounts\/ServiceLogin\?(.*)?ahname=Chrome\+to\+Phone(.*)?$/i ) ) {
		// Opera log in message so users know what they are logging in to.
		findAndReplace('Chrome', 'Opera', document.body); 
	} else if (currentUrl.match( /^http:\/\/code\.google\.com\/p\/chrometophone\/logo(.*)?$/i )) {
		opera.extension.postMessage({
			action: ACTION_CLOSE_TAB
		});
	}
}, false);