/* use strict */
XML.ignoreWhitespace = false;
XML.prettyPrinting = false;
var INFO =
<plugin name="my_migemo_find" version="0.0">
</plugin>;

(function(){
    var gLastCommand; // EventListener内のエラー表示用。
                      // event.findTermが空っぽなのでこれで代用
    // XUL/Migemoの取得
    var XMigemoFind;
    try {
        XMigemoFind = Cc['@piro.sakura.ne.jp/xmigemo/find;1']
    .getService(Ci.pIXMigemoFind);
    } catch(ex if ex instanceof TypeError){}

    if (!XMigemoFind){
        dactyl.echoerr("XUL/Migemo not found. You should be install XUL/Migemo.");
        return;
    }
    var migemo = XMigemoFind.wrappedJSObject;
    migemo.target = window.gBrowser;
    // インクリメンタル検索中にマッチしない場合のエラーを表示するためのEventListener
    migemo.document.addEventListener('XMigemoFindProgress',
        function(){
            if (!migemo.foundRange){
                dactyl.echoerr("E486: Pattern not found: " + gLastCommand, commandline.FORCE_SINGLELINE);
            }
            else {
                commandline.clear();
            }
        },
        false
    );

    // 検索語の先頭が'\'の場合には通常の検索
    // それ以外はMigemo検索
    function migemoFind(command, backward){
        if (command.indexOf('\\') == 0){
            migemo.disable = true;
            rangefinder.find(command.substr(1), backward);
        }
        else {
            migemo.disable = false;
            // ?で逆方向に検索できないのは仕様です
            migemo.find(false, command, options["linksearch"]);
        }
        return;
    }

    // 上書きしたfindAgainからもとのrangefinder.findAgainを呼びたいのでコピー
    var rangefinderOrig = Object.create(rangefinder);
    rangefinderOrig.findAgain = rangefinder.findAgain;
    // rangefinderオブジェクトを上書き
    overlay.overlayObject(rangefinder, {
        onChange: function onChange(command){
            if (rangefinder.options["incfind"]){
                migemoFind(gLastCommand = command);
            }
        },
        onSubmit: function onSubmit(command){
            if (!(gLastCommand = command) && rangefinder.lastFindPattern){
                migemoFind(rangefinder.lastFindPattern, rangefinder.backward);
                rangefinder.findAgain();
                return;
            }

            if (!rangefinder.options["incfind"] || !rangefinder.rangeFind || !rangefinder.rangeFind.found){
                rangefinder.clear();
                migemoFind((gLastCommand = command) || rangefinder.lastFindPattern, rangefinder.backward);
            }

            if (rangefinder.options["hlfind"]){
                if (migemo.disable)
                    rangefinder.highlight();
                else
                    rangefinder.clear();
            }

            rangefinder.rangeFind.focus();
        },
        findAgain: function findAgain(reverse){
            if (migemo.disable){
                rangefinderOrig.findAgain(reverse);
            }
            else {
                if (migemo.lastFoundWord)
                    (!reverse) ? migemo.findNext(options["linksearch"]) : migemo.findPrevious(options["linksearch"]);
            }
        }
    });
})();