Google via the prompt

google-prompt.js

// ============================================================ //
// Inside of the PRESERVE Area
// ============================================================ //
//

var googlePrompt = (
    function () {

        var googleAPIUrl = "http://ajax.googleapis.com/ajax/services/search/";
        var page_index = null;

        function decodeJSON(json) {
            return util.safeEval("(" + json + ")");
        }

        function search (query, page_index) {
            if (!page_index) {
                page_index= 0;
            }

            var url = googleAPIUrl + "web?v=1.0&rsz=large&start=" + page_index + "&q=" + encodeURIComponent(query);

            var xhr = XMLHttpRequest();
            xhr.open("GET", url, false);
            xhr.setRequestHeader("Content-type", "application/json");
            xhr.send();

            var obj = decodeJSON(xhr.responseText);

            var results = obj["responseData"]["results"];
            var collection = [];

            for (var i = 0; i < results.length; i++) {
                var result = results[i];
                collection.push([result["titleNoFormatting"], result["unescapedUrl"]]);
            }

            prompt.selector(
                {
                    message: "Google Search Result " + "(p. " + page_index + ")",
                    collection: collection,
                    header: ["title", "url"],
                    width: [60, 40],
                    actions: [
                        [function (aIndex) {
                             gBrowser.loadOneTab(collection[aIndex][1], null, null, null, false);
                         },
                         "Open this url",
                         "open-this-url,c"],
                        [function (aIndex) {
                             command.setClipboardText(collection[aIndex][1]);
                         },
                         "Copy this url",
                         "copy-this-url,c"],
                        [function (aIndex) {
                             prompt.finish();
                             search(query, page_index + 8);
                         },
                         "Next",
                         "search-next,c"]
                    ],
                    keymap: {
                        "j": "search-next",
                        "y": "copy-this-url"
                    }
                }
            );
        }

        var self = {
            do: function (ev, arg) {
                prompt.read("Search:",
                            function (aReadStr, aUserArg) {
                                search(aReadStr);
                            }
                            , null, null, null, 0, null);
            }
        };
        return self;
    }
)();

ext.add("google-prompt", googlePrompt.do,
        M({ja: 'Google Prompt.',
           en: 'Google Prompt.'}));

// google-prompt ends here.