From b0511234bb8339a73fef8e2a42c2bfac8dc3d305 Mon Sep 17 00:00:00 2001
From: garywill <garywill@disroot.org>
Date: Sun, 13 Nov 2022 15:35:01 +0800
Subject: [PATCH] 2.15.5

---
 src/addon-popup.html     |  46 +++--
 src/ajax.js              | 153 +++++++++--------
 src/background.js        | 359 +++++++++------------------------------
 src/background_sw.js     |   6 +
 src/ck.js                |  48 +++---
 src/connecting.html      |   7 +-
 src/engine_handle.js     | 125 ++++++++++----
 src/enginesdata.js       | 159 +++++++++++++++--
 src/i_layout.css         |  30 +++-
 src/i_scripts.js         |  25 +--
 src/js/checku.js         | 319 ++++++++++++++++++++++++++++++++++
 src/js/mtm.js            |   5 +-
 src/js/themeHandler.js   |   8 +-
 src/js/useraction.js     |  37 +++-
 src/manifest-chrome.json |   3 +-
 src/manifest.json        |   2 +-
 16 files changed, 864 insertions(+), 468 deletions(-)
 create mode 100644 src/background_sw.js
 create mode 100644 src/js/checku.js

diff --git a/src/addon-popup.html b/src/addon-popup.html
index d1a4484..6926c3d 100644
--- a/src/addon-popup.html
+++ b/src/addon-popup.html
@@ -36,6 +36,8 @@
 <script type='text/javascript' src='js/mtm.js'></script> 
 <script type='text/javascript' src='i_scripts.js'></script> 
 <script type='text/javascript' src='lzutf8.js'></script> 
+<script type='text/javascript' src='ajax.js'></script> 
+<script type='text/javascript' src='js/checku.js'></script> 
         <link rel='stylesheet' type='text/css' href='i_layout.css'></link> 
 		
 		<link rel='stylesheet' type='text/css' href='addon.css'></link> 
@@ -61,11 +63,12 @@
                     <span class="header-nav-span"> 
     
             <a>
-            <span class='lang lang-zh'>大术专搜</span><span class='lang lang-en'>Big Search</span>        </a>
+            <span class='lang lang-zh'>大术专搜</span><span class='lang lang-en'>Big Search</span> 🔍
+        </a>
         
     </span>
                     <span id="newver" style="display: none;" >
-                    <a id="newver_link" target="_blank" >
+                    <a id="newver_link" target="_blank" title="">
                     </a>
                 </span>
                 <span id="curver"  ></span>
@@ -166,7 +169,7 @@
                                             </span>
                                             
                                           
-                                            <button class="general_btn btns_copypaste" id="openhist" class="openhist_hide" >
+                                            <button class="general_btn btns_copypaste btns_copypaste_right" id="openhist" class="openhist_hide" >
                                                 <span class="span_copypaste_cont">
                                                     <span class="span_copypaste"><span class='lang lang-zh'>历史</span><span class='lang lang-en'>History</span></span>
                                                 </span>
@@ -228,7 +231,7 @@
                                     
                                     <div id="div_search_permi" style="display:none; " >
                                         <button id="btn_search_permi">
-                                            <span class='lang lang-zh'>读取浏览器内的搜索引擎</span><span class='lang lang-en'>Read browser-installed search engines</span>                                        </button>
+                                            <span class='lang lang-zh'>开启此功能</span><span class='lang lang-en'>Enable this feature</span>                                        </button>
                                     </div>
                                     
                                     <div id="engines_cont"> 
@@ -360,7 +363,7 @@ <h3><span class='lang lang-zh'>使用说明</span><span class='lang lang-en'>Usa
                             
                             
                                 <li>
-                                    快捷键
+                                    快捷键（可能需自行修改）
                                     <ul>
                                     <li>唤出界面。Firefox: <code>Ctrl+Alt+S</code> | Chrome及其他：<code>Ctrl+Shift+S</code></li>
                                     <li>将选择文本设定为搜索词（然后再使用唤出界面）。Firefox: <code>Ctrl+Alt+D</code> | Chrome及其他：<code>Ctrl+Shift+D</code></li>
@@ -376,15 +379,6 @@ <h3><span class='lang lang-zh'>使用说明</span><span class='lang lang-en'>Usa
                             <p>大术专搜 当然<b>不只是</b>一个简单的搜索请求发送器。可以访问源代码页面，以了解其一些<b>“独门特技”</b>。</p>
                             
                                                         
-                                                            
-                                <h4>老用户FAQ</h4>
-                                
-                                <p><strong>Q: Chrome系的浏览器中，选择文本后点击右键菜单没反应，还要点击一下工具栏按钮才打开界面</strong></p>
-                                
-                                <p>A: 这是<a target="_blank" href="https://stackoverflow.com/questions/54189283/chrome-extension-open-popup-from-contentscript-file#comment95207111_54189283">仅Chrome内核浏览器有的缺陷</a>。请在选择了文本后，使用按键组合<code>Ctrl+Shift+D</code>然后<code>Ctrl+Shift+S</code>来作为暂时的快捷操作</p>
-                                
-                                
-                                                        
                         </span>
                         
                         <span class="lang lang-en">
@@ -406,7 +400,7 @@ <h4>老用户FAQ</h4>
                             
                             
                                 <li>
-                                    Keyboard shortcut 
+                                    Keyboard shortcuts (may need changing manually )
                                     <ul>
                                     <li>Open popup. Firefox: <code>Ctrl+Alt+S</code> | Chrome &amp; others：<code>Ctrl+Shift+S</code></li>
                                     <li>Set selected text as search term (then use open popup). Firefox: <code>Ctrl+Alt+D</code> | Chrome &amp; others：<code>Ctrl+Shift+D</code></li>
@@ -427,6 +421,28 @@ <h4>老用户FAQ</h4>
                         </span>
                     </div>
 
+                                            <div class="lang lang-zh">
+                            <h3>老用户FAQ</h3>
+                            
+                            <div style="text-align: left;">
+                                <p><strong>Q: Chrome系的浏览器中，选择文本后点击右键菜单没反应，还要点击一下工具栏按钮才打开界面</strong></p>
+                                
+                                <p>A: 这是<a target="_blank" href="https://stackoverflow.com/questions/54189283/chrome-extension-open-popup-from-contentscript-file#comment95207111_54189283">仅Chrome内核浏览器有的缺陷</a>。请在选择了文本后，使用按键组合<code>Ctrl+Shift+D</code>然后<code>Ctrl+Shift+S</code>（可能需自行修改）来作为暂时的快捷操作</p>
+                            </div>
+                        </div> 
+                        <div class="lang lang-en">
+                            <h3>FAQ</h3>
+                            
+                            <div style="text-align: left;">
+                                <p><strong>Q: I selected text and used context menu, it won't automatically show popup until I click toolbar button (on some browsers like Chrome)</strong></p>
+                                
+                                <p>A: It's because of <a target="_blank" href="https://stackoverflow.com/questions/54189283/chrome-extension-open-popup-from-contentscript-file#comment95207111_54189283">defect of Chrome browser engine</a>. Please use key combination <code>Ctrl+Shift+D</code> then <code>Ctrl+Shift+S</code> (you may want to modify them) as workaround</p>
+                            </div>
+                        </div> 
+                        
+                        
+                                       
+                    
                                         
                 </div>
                     <div class="btm_dialog" id="btn_donate_dialog" style="display:none;" >
diff --git a/src/ajax.js b/src/ajax.js
index 1c9c5b7..5fb8884 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -1,106 +1,109 @@
-const ajax = _ajax_ ; 
-const keyword = _keyword_ ;
 
-const before_start = 100;
-var slow = 10;
-async function sleep(ms) {
-    return new Promise(resolve => setTimeout(resolve, ms));
-}
 
-async function start_go()
+async function ajax_execute(ajax, keyword)
 {
-    if ( typeof(ajax) === "string" )
-        await doInput(ajax, true);
-    else if ( Array.isArray(ajax) )
+    console.debug("ajax_execute()");
+    const before_start = 100;
+    var slow = 10;
+    async function sleep(ms) {
+        return new Promise(resolve => setTimeout(resolve, ms));
+    }
+
+    async function start_go()
     {
-        for (var i=0; i<ajax.length; i++)
+        if ( typeof(ajax) === "string" )
+            await doInput(ajax, true);
+        else if ( Array.isArray(ajax) )
         {
-            ajax_arr_ele = ajax[i];
-            await sleep(slow * 10);
-            if ( typeof(ajax_arr_ele) === "string" )
+            for (var i=0; i<ajax.length; i++)
             {
-                var web_element = document.querySelectorAll(ajax_arr_ele)[0];
-                if ( web_element.tagName == "TEXTAREA" )
+                ajax_arr_ele = ajax[i];
+                await sleep(slow * 10);
+                if ( typeof(ajax_arr_ele) === "string" )
                 {
-                    await doInput(ajax_arr_ele, i==ajax.length-1);
-                }
-                else if ( web_element.tagName == "INPUT" )
-                {
-                    if ( web_element.getAttribute("type") === null ||
-                        ["", "text", "search", "number", "tel", "email", "url", "password", "range", "date", "datetime-local", "time" , "week", "datetime", "hidden"]
-                            .includes( web_element.getAttribute("type").toLowerCase() )
-                    )
+                    var web_element = document.querySelectorAll(ajax_arr_ele)[0];
+                    if ( web_element.tagName == "TEXTAREA" )
                     {
                         await doInput(ajax_arr_ele, i==ajax.length-1);
                     }
-                    else if (web_element.getAttribute("type").toLowerCase() == "radio")
+                    else if ( web_element.tagName == "INPUT" )
                     {
-                        web_element.checked="checked";
+                        if ( web_element.getAttribute("type") === null ||
+                            ["", "text", "search", "number", "tel", "email", "url", "password", "range", "date", "datetime-local", "time" , "week", "datetime", "hidden"]
+                                .includes( web_element.getAttribute("type").toLowerCase() )
+                        )
+                        {
+                            await doInput(ajax_arr_ele, i==ajax.length-1);
+                        }
+                        else if (web_element.getAttribute("type").toLowerCase() == "radio")
+                        {
+                            web_element.checked="checked";
+                        }
+                        else if (["submit", "button", "reset"]
+                                .includes( web_element.getAttribute("type").toLowerCase() )
+                        )
+                        {
+                            web_element.click();
+                        }
+                        // TODO checkbox image file
                     }
-                    else if (["submit", "button", "reset"]
-                            .includes( web_element.getAttribute("type").toLowerCase() )
-                    )
+                    else if ( web_element.tagName == "BUTTON" )
                     {
                         web_element.click();
                     }
-                    // TODO checkbox image file
                 }
-                else if ( web_element.tagName == "BUTTON" )
+                else if ( typeof(ajax_arr_ele) === "number" )
                 {
-                    web_element.click();
+                    await sleep(ajax_arr_ele);
                 }
             }
-            else if ( typeof(ajax_arr_ele) === "number" )
-            {
-                await sleep(ajax_arr_ele);
-            }
         }
     }
-}
-async function doInput(queryStr, pressEnter=true) 
-{
-    
-    var web_inputbox;
-    
-    await sleep(slow * 5);
-    web_inputbox = document.querySelectorAll(queryStr)[0];
-    web_inputbox.focus();
-    
-    
-    await sleep(slow * 2);
-    web_inputbox = document.querySelectorAll(queryStr)[0];
-    web_inputbox.dispatchEvent ( new Event( "input", { bubbles:true } ) );
-    
-    await sleep(slow * 2);
-    web_inputbox = document.querySelectorAll(queryStr)[0];
-    web_inputbox.dispatchEvent ( new Event( "change", { bubbles:true } ) );
-    
-    await sleep(slow * 5);
-    web_inputbox = document.querySelectorAll(queryStr)[0];
-    web_inputbox.value = keyword ;
-    
-    await sleep(slow * 2);
-    web_inputbox = document.querySelectorAll(queryStr)[0];
-    web_inputbox.dispatchEvent ( new Event( "input", { bubbles:true } ) );
-    
-    await sleep(slow * 2);
-    web_inputbox = document.querySelectorAll(queryStr)[0];
-    web_inputbox.dispatchEvent ( new Event( "change", { bubbles:true } ) );
-    
-    if (pressEnter) 
+    async function doInput(queryStr, pressEnter=true) 
     {
+        
+        var web_inputbox;
+        
         await sleep(slow * 5);
         web_inputbox = document.querySelectorAll(queryStr)[0];
-        web_inputbox.dispatchEvent ( new KeyboardEvent( "keypress", { key: "Enter", keyCode: 13, bubbles: true } ) );
+        web_inputbox.focus();
+        
+        
+        await sleep(slow * 2);
+        web_inputbox = document.querySelectorAll(queryStr)[0];
+        web_inputbox.dispatchEvent ( new Event( "input", { bubbles:true } ) );
+        
+        await sleep(slow * 2);
+        web_inputbox = document.querySelectorAll(queryStr)[0];
+        web_inputbox.dispatchEvent ( new Event( "change", { bubbles:true } ) );
         
         await sleep(slow * 5);
         web_inputbox = document.querySelectorAll(queryStr)[0];
-        web_inputbox.dispatchEvent ( new KeyboardEvent( "keydown", { key: "Enter", keyCode: 13, bubbles: true } ) );
+        web_inputbox.value = keyword ;
+        
+        await sleep(slow * 2);
+        web_inputbox = document.querySelectorAll(queryStr)[0];
+        web_inputbox.dispatchEvent ( new Event( "input", { bubbles:true } ) );
         
-        await sleep(slow * 1);
+        await sleep(slow * 2);
         web_inputbox = document.querySelectorAll(queryStr)[0];
-        web_inputbox.dispatchEvent ( new KeyboardEvent( "keyup", { key: "Enter", keyCode: 13, bubbles: true } ) );
+        web_inputbox.dispatchEvent ( new Event( "change", { bubbles:true } ) );
+        
+        if (pressEnter) 
+        {
+            await sleep(slow * 5);
+            web_inputbox = document.querySelectorAll(queryStr)[0];
+            web_inputbox.dispatchEvent ( new KeyboardEvent( "keypress", { key: "Enter", keyCode: 13, bubbles: true } ) );
+            
+            await sleep(slow * 5);
+            web_inputbox = document.querySelectorAll(queryStr)[0];
+            web_inputbox.dispatchEvent ( new KeyboardEvent( "keydown", { key: "Enter", keyCode: 13, bubbles: true } ) );
+            
+            await sleep(slow * 1);
+            web_inputbox = document.querySelectorAll(queryStr)[0];
+            web_inputbox.dispatchEvent ( new KeyboardEvent( "keyup", { key: "Enter", keyCode: 13, bubbles: true } ) );
+        }
     }
-}
 
-setTimeout(start_go, before_start);
+    setTimeout(start_go, before_start);
+}
diff --git a/src/background.js b/src/background.js
index 8436c70..6a63a2e 100644
--- a/src/background.js
+++ b/src/background.js
@@ -14,7 +14,7 @@
  */
 
 async function  on_addon_load() {
-    
+   
     if ( ! (await get_addon_setting("hl")) &&  
         chrome.i18n.getUILanguage().split('-')[0] == 'zh' 
     )
@@ -23,12 +23,10 @@ async function  on_addon_load() {
     
     set_contextmenu();
     
-    set_checkupdate();
-    
     set_sidebar_panel(); 
 }
 
-on_addon_load();
+on_addon_load(); // TODO ????  判断是否sw第一次运行 ？ ???
 
 ////////////////////////////////////
 
@@ -49,14 +47,30 @@ async function set_contextmenu() {
         id: "menu_search_selected",
         title: "BigSearch for '%s'",
         //icons: {"32": "icon_button.svg"},
-        onclick: function (info) {
+
+    };
+    if (isFirefox)
+        selection_menu_creation.icons = {"32": "icon_button.svg"};
+    
+    if (mv==2)
+    {
+        selection_menu_creation ['onclick'] = function (info) {
             //console.log(info.selectionText);
             setStor("input_content", info.selectionText);
             try { chrome.browserAction.openPopup() ; } catch(err) {}
         }
-    };
-    if (isFirefox)
-        selection_menu_creation.icons = {"32": "icon_button.svg"};
+    }
+    else if (mv>=3)
+    {
+        chrome.contextMenus.onClicked.addListener( function (info) {
+            if (info.menuItemId === "menu_search_selected" )
+            {
+                console.debug("mv3 contextmenu onclick", info);
+                setStor("input_content", info.selectionText);   // NOTE TODO Chrome mv3 no localStorage
+                try { chrome.browserAction.openPopup() ; } catch(err) {}
+            } 
+        } );
+    }
         
     chrome.contextMenus.create( selection_menu_creation );
 
@@ -78,25 +92,59 @@ async function set_contextmenu() {
 
 //--------------------
 
-chrome.commands.onCommand.addListener(async function (command) {
+chrome.commands.onCommand.addListener( function (command, tab) { // 'tab' is only in mv3
     if (command == "selection_as_search") {
-        chrome.permissions.request({
-            permissions: ["activeTab"]
-        });
-
-        chrome.tabs.executeScript({
-            code: '(' + getSelectionText.toString() + ')()',
-            allFrames: false,
-            matchAboutBlank: true
-        }, function (results) {
-            //console.log(results[0]);
-            if (typeof(results[0]) === "string")
-                setStor("input_content", results[0]);
-                //chrome.browserAction.openPopup() ;
-        });
         
+        console.debug("onCommand selection_as_search");
+        
+        chrome.permissions.request({ permissions: ["activeTab"] });
+        
+        if (mv >= 3)
+        {
+            chrome.permissions.request({ permissions: ["scripting"] });
+
+            chrome.scripting.executeScript( {
+                func: getSelectionText, 
+                target: { allFrames: false, tabId: tab.id }, 
+            } , callback__selection_as_search );
+        }
+        else
+        {
+            chrome.tabs.executeScript({
+                code: '(' + getSelectionText.toString() + ')()',
+                allFrames: false,
+                matchAboutBlank: true
+            }, callback__selection_as_search );
+        } 
     }
+    
 });
+function callback__selection_as_search (results)
+{
+    console.log(results);
+    
+    var selected_text;
+    
+    if (mv >= 3)
+    {
+        if (results[0])
+            selected_text = results[0].result ;
+    }
+    else
+        selected_text = results[0];  
+    
+    if (typeof(selected_text) !== "string")
+        selected_text = null;
+    
+    if (selected_text)
+    {
+        if (mv==2)
+            setStor("input_content", results[0]);  // localStorage is not usable in mv3 service worker. Usable in mv2 background
+        // TODO
+//         if (isFirefox)
+//             browser.browserAction.openPopup() ; // won't allow here
+    }
+}
 
 function getSelectionText() {
     var activeEl = document;
@@ -122,267 +170,12 @@ function getSelectionText() {
     } else if (docNode.getSelection) {
         text = docNode.getSelection().toString();
     }
-    return text;
-}
-
-//-------
-
-async function set_checkupdate() {
-    if ( (await get_addon_setting("checkupdate")) !== true 
-        && ! (
-            (await get_addon_setting("checkupdate")) === undefined
-            && (  isFromStore(".microsoft.com") || isFromStore(".opera.com")  ) 
-        )
-    )
-        return;
-    
-    parseGotNewsXml();
-    
-    // for real
-    setTimeout( checkNews, 20*60*1000 );
-    setInterval( checkNews , 10*60*60*1000 );
-    
-    // for test
-    //setTimeout( checkNews, 6*1000 );
-    //setInterval( checkNews , 30*1000 );
-    
-}
-
-async function checkNews() {
-    
-    const news_urls = [
-        "https://update.versioncheck.workers.dev/news",
-        "https://acsearch.cf/appnews.php",
-        "https://www.acsearch.ml/news.xml",
-        "https://garywill.gitlab.io/releaseapps-dl/news.xml",
-        `https://api.allorigins.win/raw?url=${encodeURIComponent('https://gitlab.com/garywill/releaseapps-dl/-/raw/main/news.xml')}`,
-        "https://jsonp.afeld.me/?url=https://gitlab.com/garywill/releaseapps-dl/-/raw/main/news.xml",
-    ];
-    
     
-    var url_use_sub = getRandomInt( news_urls.length );
-    var news_url = news_urls [ url_use_sub ];
+//     console.debug(localStorage);
+//     if (text)
+//         localStorage.setItem("input_content", text);  // 'localStorage' in Content Script is the web page's localStorage
     
-    //var news_url = "http://192.168.3.19:12000/appnews.php";
-    //console.log("downloading", news_url);
     
-    await fetch(news_url).then(response => response.text()).then(textString => {
-        var xml = textString;
-        
-        try{
-            const parser = new DOMParser();
-            var xmlDoc = parser.parseFromString(xml, "text/xml");
-
-            var xmlBigsearch = xmlDoc.querySelector("news[app=bigsearch-addon]");
-            
-            const serializer = new XMLSerializer();
-            var serXmlStr = serializer.serializeToString(xmlBigsearch) ;
-            
-            setStor("latest_news_xml",serXmlStr)
-            parseGotNewsXml();
-        }catch(err) {
-            console.warn("Error on parsing downloaded latest news");
-            console.warn(err);
-
-            clearShowingNews(true);
-        }
-    }) .catch(err => {
-        console.warn("Error on fetching latest news");
-        console.warn(err);
-        
-        clearShowingNews(true);
-    });
-}
-
-// called when 
-//  1. after successfully getting news 
-//  2. on addon loaded (possibly updated)
-async function parseGotNewsXml()  
-{
-    clearShowingNews(false);
-    
-    const xml = getStor("latest_news_xml");
-    
-    if (!xml)
-        return;
-    
-    const parser = new DOMParser();
-    var newsDoc;
-    newsDoc = parser.parseFromString(xml, "text/xml");
-    
-    
-    var filters = newsDoc.documentElement.querySelectorAll("filter") ;
-    for (var i=0; i<filters.length; i++) {
-        
-        if ( filters[i].getAttribute("version") )
-        {
-            const cur_ver = chrome.runtime.getManifest()['version'] ;
-            const [op, cmp_ver] = filters[i].getAttribute("version").split(' ');
-            if (op == "lt")  // lt = less than
-            {
-                if ( compareVer(cur_ver, cmp_ver) != -1 )
-                    continue;
-            }
-            else if (op == "le")  // le = less than or equal
-            {
-                if ( compareVer(cur_ver, cmp_ver) > 0 )
-                    continue;
-            }
-        }
-        
-        if ( filters[i].getAttribute("browsertype") == "chromium" )
-        {
-            if ( ! isChrome ) 
-                continue;
-        }
-        else if ( filters[i].getAttribute("browsertype") == "firefox" )
-        {
-            if ( ! isFirefox )
-                continue;
-        }
-        else if ( filters[i].getAttribute("browsertype") == "chrome-store" )
-        {
-            if ( ! isFromStore(".google.com") )
-                continue;
-        }
-        else if ( filters[i].getAttribute("browsertype") == "edge-store" )
-        {
-            if ( ! isFromStore(".microsoft.com") )
-                continue;
-        }
-        else if ( filters[i].getAttribute("browsertype") == "opera-store" )
-        {
-            if ( ! isFromStore(".opera.com") )
-                continue;
-        }
-        
-        if ( filters[i].getAttribute("installtype") == "hosted" )
-        {
-            if ( ( await ifNotStore() ) !== true )
-                continue;
-        }
-        
-        
-        parse_news(filters[i]);
-
-        break;
-    }
-    
-    async function parse_news( news_filter_tag ) 
-    {
-        //console.log("passed filter");
-        //console.log(news_filter_tag.outerHTML);
-        
-        if ( news_filter_tag.querySelector("switch") &&
-            news_filter_tag.querySelector("switch").getAttribute("show") == "false" 
-        ) 
-        {
-            clearShowingNews(false);
-            return;
-        }
-        
-        const lang = (await get_addon_setting("hl")) ;
-        var text = "";
-        if ( ! lang ) // language not set. use default language
-        {
-            text = news_filter_tag.querySelector(`lang[lang=en]`).getAttribute("text") ;
-        }else {
-            if ( news_filter_tag.querySelector(`lang[lang=${lang}]`) )
-                text =  news_filter_tag.querySelector(`lang[lang=${lang}]`).getAttribute("text") ;
-            else 
-                text =  news_filter_tag.querySelector(`lang[lang=en]`).getAttribute("text") ;
-        }
-        
-        if ( text )
-        {
-            setStor("news_text", text);
-            
-            if ( news_filter_tag.querySelector("link") && 
-                news_filter_tag.querySelector("link").getAttribute("link") 
-            )
-                setStor("news_link", news_filter_tag.querySelector("link").getAttribute("link") );
-        }
-        
-        //console.log( getStor('news_text') );
-        //console.log( getStor('news_link') );
-        
-    }
-    
-    // https://stackoverflow.com/a/53387532/10617713
-    // Function returns:
-    // 0 : a = b
-    // 1 : a > b
-    // -1 : a < b
-    function compareVer(a, b)
-    {
-        function prep(t)
-        {
-            return ("" + t)
-            //treat non-numerical characters as lower version
-            //replacing them with a negative number based on charcode of first character
-            .replace(/[^0-9\.]+/g, function(c){return "." + ((c = c.replace(/[\W_]+/, "")) ? c.toLowerCase().charCodeAt(0) - 65536 : "") + "."})
-            //remove trailing "." and "0" if followed by non-numerical characters (1.0.0b);
-            .replace(/(?:\.0+)*(\.-[0-9]+)(\.[0-9]+)?\.*$/g, "$1$2")
-            .split('.');
-        }
-        a = prep(a);
-        b = prep(b);
-        for (var i = 0; i < Math.max(a.length, b.length); i++)
-        {
-            //convert to integer the most efficient way
-            a[i] = ~~a[i];
-            b[i] = ~~b[i];
-            if (a[i] > b[i])
-                return 1;
-            else if (a[i] < b[i])
-                return -1;
-        }
-        return 0;
-    }
-    
-    async function ifNotStore() {
-        if ( isFromStore(".google.com") || isFromStore(".microsoft.com") || isFromStore(".opera.com") )
-            return false;
-        
-        if (isFirefox && browser.runtime.getManifest()['browser_specific_settings'] 
-                && browser.runtime.getManifest()['browser_specific_settings']['gecko']
-                && browser.runtime.getManifest()['browser_specific_settings']['gecko']['update_url']
-        )
-            return true;
-        
-        if ( (await getInstallType() ) != "normal" ) 
-            return true;
-
-        if (isFirefox && chrome.runtime.id != "{45a03d78-2183-4d73-afe4-cfda260d1308}")
-            return true;
-        
-        if (isChrome && chrome.runtime.id == "gaalgfdodackblpbckbllfghldhhmehb")
-            return true;
-        
-
-    }
-    
-}
-    
-    
-function isFromStore(storeDomain) {
-    const buildin_update = chrome.runtime.getManifest()['update_url'] ;
-    if ( typeof ( buildin_update ) == "string" ){
-        const buildin_update_host = buildin_update.split('/')[2];
-        if ( buildin_update_host.endsWith(storeDomain) )
-            return true;
-    }
-    return false;
-}
-
-function clearShowingNews(if_del_xml=false) {
-    if (if_del_xml)
-        delStor("latest_news_xml");
-    
-    delStor("news_text");
-    delStor("news_link");
-}
-
-function getRandomInt(max) {
-    return Math.floor(Math.random() * max);
+//     console.debug("getSelectionText() return:", text);
+    return text;
 }
diff --git a/src/background_sw.js b/src/background_sw.js
new file mode 100644
index 0000000..47fc083
--- /dev/null
+++ b/src/background_sw.js
@@ -0,0 +1,6 @@
+ 
+console.debug("background_sw.js");
+
+let window = self;
+
+importScripts("ck.js", "background.js");
diff --git a/src/ck.js b/src/ck.js
index 803bed1..ffad27c 100755
--- a/src/ck.js
+++ b/src/ck.js
@@ -13,12 +13,15 @@
  * Source code: https://github.com/garywill/BigSearch
  */
 
-var isFirefox = false;
-var isChrome = false;
+let isFirefox = false;
+let isChrome = false;
+let mv = -1;
+
 if (window.run_env != "http_web")
 {
     isFirefox = chrome.runtime.getURL('').startsWith('moz-extension://');
     isChrome = chrome.runtime.getURL('').startsWith('chrome-extension://');
+    mv = chrome.runtime.getManifest().manifest_version;
 }
 
 const realSidebarUrl = "addon-popup.html?showas=sidebar";
@@ -46,12 +49,12 @@ async function get_addon_setting(key, local=false) {
         return new Promise((resolve, reject) => {
             // Asynchronously fetch all data from storage.sync.
             storageType.get(null, (items) => {
-            // Pass any observed errors down the promise chain.
-            if (chrome.runtime.lastError) {
-                return reject(chrome.runtime.lastError);
-            }
-            // Pass the data retrieved from storage down the promise chain.
-            resolve(items);
+                // Pass any observed errors down the promise chain.
+                if (chrome.runtime.lastError) {
+                    return reject(chrome.runtime.lastError);
+                }
+                // Pass the data retrieved from storage down the promise chain.
+                resolve(items);
             });
         });
     }
@@ -84,12 +87,12 @@ async function getInstallType(){
         // Immediately return a promise and start asynchronous work
         return new Promise((resolve, reject) => {
             chrome.management.getSelf( (items) => {
-            // Pass any observed errors down the promise chain.
-            if (chrome.runtime.lastError) {
-                return reject(chrome.runtime.lastError);
-            }
-            // Pass the data retrieved down the promise chain.
-            resolve(items['installType']);
+                // Pass any observed errors down the promise chain.
+                if (chrome.runtime.lastError) {
+                    return reject(chrome.runtime.lastError);
+                }
+                // Pass the data retrieved down the promise chain.
+                resolve(items['installType']);
             });
         });
     }
@@ -150,7 +153,7 @@ function set_string_format_prototype() {
 }
 
 
-const use_localstorage = true;
+   
 
 
 //////
@@ -158,7 +161,7 @@ const use_localstorage = true;
 
 function getStor(cname) 
 {
-    if (!use_localstorage) return "";
+   
     
     var got = false;
 
@@ -173,7 +176,7 @@ function getStor(cname)
 
 function setStor(c_name,value)
 {
-    if (!use_localstorage) return false;
+   
     
 	try{
         localStorage.setItem(c_name,value);
@@ -183,7 +186,7 @@ function setStor(c_name,value)
 
 function delStor(name)
 {
-    if (!use_localstorage) return false;
+   
     try{
         localStorage.removeItem(name);
         return true;
@@ -193,7 +196,7 @@ function delStor(name)
 function gethiststr()
 {
 //get cookie "hist" raw string
-    if (!use_localstorage) return "";
+   
     
 	return getStor("hist" );
 }
@@ -221,7 +224,7 @@ function add_hist2c(hist2a)
 //if reach upper limit delete the lowest one then add
 //if not , just add
     
-    if (!use_localstorage) return false;
+   
     
     function addhiststr2c(addstr)
     {
@@ -280,7 +283,7 @@ function add_hist2c(hist2a)
 function del_hist(hist2d)
 {
 //parameter string hasn't been escaped
-    if (!use_localstorage) return false;
+   
     
 	var hists=splithists(gethiststr());
 	delStor("hist" );
@@ -321,3 +324,6 @@ function removeUrlParts(s) // 'http://example.com:8888/a/b/c' --> 'http://exampl
         return s;
     }
 }
+function getRandomInt(max) { // 0 to max
+    return Math.floor(Math.random() * (max+1) );
+}
diff --git a/src/connecting.html b/src/connecting.html
index 367fcd5..0d2d693 100644
--- a/src/connecting.html
+++ b/src/connecting.html
@@ -19,12 +19,15 @@
                 border: none;
                 background-color: transparent;
             }
+            #btn_retry {
+                width: 100%;
+                max-width: 300px;
+            }
         </style>
     </head>
     <body>
         <span class="lang lang-zh  dim">大术专搜 -- ..连接中 </span>
         <span class="lang lang-en  dim">Big Search -- ..Connecting to </span>
-        <button id="btn_retry" style="visibility: hidden;">Retry</button> 
         <span class="dim"> ... --→  </span>
         
         &nbsp;&nbsp;&nbsp;
@@ -35,6 +38,8 @@
         
         <span id="span_mouseclickE"></span> 
         
+        <br>
+        <button id="btn_retry" style="visibility: hidden;">Retry</button> 
         <br>
         <br>
         
diff --git a/src/engine_handle.js b/src/engine_handle.js
index 56c1b59..7daf3e0 100755
--- a/src/engine_handle.js
+++ b/src/engine_handle.js
@@ -89,11 +89,18 @@ function db(dbname="bigsearch") {
     {
         var browser_engines = {};
         var browser_engines_list = {};
-        
-        got_browser_engines.forEach( function(obj, i) {
-            browser_engines[obj.name] = {};
-            browser_engines[obj.name]['dname'] = obj.name;
-        });
+            
+        if (isFirefox)
+        {
+            got_browser_engines.forEach( function(obj, i) {
+                browser_engines[obj.name] = {};
+                browser_engines[obj.name]['dname'] = obj.name;
+            });
+        }else if (isChrome)
+        {
+            browser_engines['chrome_default_search'] = {};
+            browser_engines['chrome_default_search'] ['dname'] = i18n( [ "浏览器默认搜索引擎", "Browser default search engine" ] );
+        }
         
         browser_engines_list = engines_object_tolist(browser_engines);
         
@@ -134,7 +141,7 @@ function engines_object_tolist(engines_obj) {
 
 const defaultBtn = {"search":{"label":i18n(["搜索", "Search"])}};
 
-function createEngineTr(e_name,dbname=null){
+function createEngineTr(e_name,dbname=null, egnTrNum=null){
     var tr = document.createElement("tr");
     tr.className = "engine_tr";
     tr.setAttribute("e",e_name);
@@ -144,6 +151,15 @@ function createEngineTr(e_name,dbname=null){
     td_dname.className = "enginename_td";
     td_dname.title = i18n(['要进行操作（如搜索），请输入后点击右列相应的按钮\n\n如果想要将大术专搜内置的引擎“设为常用”或“重新排序”，请使用“用户自定”功能。使用其中的在线GUI编辑器可以轻松操作', 'To do an action (e.g. search), input text then click a button on the right column\n\nIf want to "set as favorite" or "re-order" Big Search build-in engines, use "User Custom". Use its online editing-engine GUI to easily do it']);
     
+    if (typeof(egnTrNum) === "number")
+    { 
+        var span_egnTrNum = document.createElement("span");
+        span_egnTrNum.className = "span_egnTrNum";
+        span_egnTrNum.textContent = egnTrNum;
+        td_dname.appendChild(span_egnTrNum);
+    } 
+    
+    
     var span_in_td_dname = document.createElement("span");
     td_dname.appendChild(span_in_td_dname);
     span_in_td_dname.title = db(dbname).sEngines[e_name].tip ? db(dbname).sEngines[e_name].tip : i18n(["点此打开其首页。\n要进行操作（如搜索），请输入后点击右列相应的按钮\n\n如果想要将大术专搜内置的引擎“设为常用”或“重新排序”，请使用“用户自定”功能。使用其中的在线GUI编辑器可以轻松操作", 'Click to open its homepage.\n To do an action (e.g. search), input text then click a button on the right column\n\nIf want to "set as favorite" or "re-order" Big Search build-in engines, use "User Custom". Use its online editing-engine GUI to easily do it']);
@@ -269,6 +285,7 @@ function createETableByCata(cata, dbname=null, object_id=null, object_class=null
     if (object_class) table.className = object_class;
     if (object_style) table.style = object_style;
     
+    var trNum = 0;
     db(dbname).catas[cata].engines.forEach(function(ele){
         if (isVisible(ele))
         {
@@ -277,14 +294,16 @@ function createETableByCata(cata, dbname=null, object_id=null, object_class=null
                 table.appendChild( createLabelTr(ele.lstr) );
             }else if(ele.type == "engine")
             {
+                trNum ++;
                 try{
-                    table.appendChild( createEngineTr(ele.name, dbname) );
+                    table.appendChild( createEngineTr(ele.name, dbname, trNum) );
                 }catch(err){console.error(err);}
             }
             else if(ele.type == "fav")
             {
+                trNum ++;
                 try{
-                    table.appendChild( createEngineTr(ele.name, "bigsearch") );
+                    table.appendChild( createEngineTr(ele.name, "bigsearch", trNum) );
                 }catch(err){console.error(err);}
             }
         }
@@ -312,7 +331,7 @@ function createCataBtn(cata, dbname=null)
     if (dbname) 
         button.id = button.id + "_dbname_" + dbname;
     
-    button.addEventListener('click', function () {cata_onclick(this);});
+    button.addEventListener('click',async function () { await cata_onclick(this); cata_onclick_ui(this); });
         
     var span = document.createElement("span");
     button.appendChild(span);
@@ -384,13 +403,27 @@ async function goEngBtn(engine,btn,keyword,dbname=null)
     
     
     if ( dbname == "browser" ) {
-        const newTab = ( await browser.tabs.create({url:"about:blank", active: newTabBringFront, index: newTabIndex}) );
-        browser.search.search({
-            query: keyword,
-            engine: engine,
-            tabId: newTab.id
-        });
-
+        
+        if (isFirefox)
+        {
+            const newTab = ( await browser.tabs.create({url:"about:blank", active: newTabBringFront, index: newTabIndex}) );
+            browser.search.search({
+                query: keyword,
+                engine: engine,
+                tabId: newTab.id
+            });
+        }else if (isChrome)
+        {
+            const newTab = await ( new Promise((resolve, reject) => {
+                chrome.tabs.create(
+                    {url:"about:blank", active: newTabBringFront, index: newTabIndex}, 
+                    (r) => { resolve(r); }
+                );
+            }) ) ;
+            
+            chrome.search.query({ text: keyword , tabId: newTab.id});
+        }
+        
         return;
     }
     
@@ -467,6 +500,21 @@ async function goEngBtn(engine,btn,keyword,dbname=null)
                 chrome.permissions.getAll( (r) => { resolve(r); }  );
             }) );
         }
+        
+        if (mv >= 3)
+        {
+            if ( ! permis_have['permissions'].includes('scripting') )
+            {
+                var r = await chrome.permissions.request({ permissions: ["scripting"] });
+                if ( !r ) {
+                    console.error("Failed to get 'scripting' permission");
+                    return;
+                }
+                    
+            }
+        }
+        
+        
         var host_permis_needed = removeUrlParts(data.action) + '*';
         if ( ! ( permis_have['origins'].includes('*://*/*') || permis_have['origins'].includes(host_permis_needed) ) ) {
             const permis_toast_o = document.getElementById("permis_toast_o");
@@ -478,6 +526,8 @@ async function goEngBtn(engine,btn,keyword,dbname=null)
             return;
         }
         
+
+        
         var newTab;
         if (isFirefox) {
             newTab = ( await browser.tabs.create({url:data.action, active: newTabBringFront, index: newTabIndex}) );
@@ -490,20 +540,35 @@ async function goEngBtn(engine,btn,keyword,dbname=null)
             }) ) ;
         }
         
-        var code_inject = "";
-        await fetch('ajax.js').then(response => response.text()).then(textString => {
-            code_inject = textString;
-        });
-        code_inject = code_inject
-            .replaceAll("_ajax_", JSON.stringify(data.ajax))
-            .replaceAll("_keyword_", JSON.stringify(keyword) ) ;
-        
-        await chrome.tabs.executeScript( newTab.id, { 
-            matchAboutBlank: false,
-            runAt: "document_idle",
-            code: code_inject
-        } );
-        
+        if (mv >= 3)
+        {
+            chrome.scripting.executeScript({
+                func: ajax_execute,
+                args: [data.ajax, keyword], 
+                target: { allFrames: false, tabId: newTab.id }, 
+            });
+        }
+        else
+        {
+            var code_inject = "";
+            var ajax_js_filecontent = "";
+            await fetch('ajax.js').then(response => response.text()).then(textString => {
+                ajax_js_filecontent = textString;
+            });
+            code_inject = `
+                const ajax = ${JSON.stringify(data.ajax)} ;
+                const keyword = ${JSON.stringify(keyword)}  ;
+                
+                ${ajax_js_filecontent}
+                
+                ajax_execute(ajax, keyword) ;
+            ` ;
+            await chrome.tabs.executeScript( newTab.id, { 
+                matchAboutBlank: false,
+                runAt: "document_idle",
+                code: code_inject
+            } );
+        }
         return;
     }
     // ====JUDGE AJAX===finish===
diff --git a/src/enginesdata.js b/src/enginesdata.js
index a2c949e..271a089 100644
--- a/src/enginesdata.js
+++ b/src/enginesdata.js
@@ -71,6 +71,7 @@ catas = {
         engines: [
             { type:"label", lstr:"中土五岳" , visible_lang: "zh"},
             { type:"engine", name:"baidu", visible_lang: "zh"},
+            { type:"engine", name:"fsou", visible_lang: "zh"},
             { type:"engine", name:"sogou", visible_lang: "zh"},
             { type:"engine", name:"360so", visible_lang: "zh"},
             { type:"label", lstr:"村融四海", visible_lang: "zh"},
@@ -101,7 +102,9 @@ catas = {
             { type:"engine", name:"choco"},
             { type:"engine", name:"scoop"},
             { type:"engine", name:"cygwin"},
+            { type:"engine", name:"ms_up_cata"},
             { type:"label", lstr:"Linux"},
+            { type:"engine", name:"manpage"},
             { type:"engine", name:"homebrew"},
             { type:"engine", name:"docker"},
             { type:"engine", name:"flathub"},
@@ -144,6 +147,7 @@ catas = {
             { type:"engine", name:"baidu_media" , visible_lang: "zh" },
             { type:"engine", name:"bilibili" , visible_lang: "zh" },
             { type:"engine", name:"music163" , visible_lang: "zh" },
+            { type:"engine", name:"fsou_img", visible_lang: "zh"},
             { type:"label", lstr:"各处民风" , visible_lang: "zh" },
             { type:"engine", name:"google_media"},
             { type:"engine", name:"youtube"},
@@ -161,6 +165,7 @@ catas = {
             { type:"engine", name:"youdao" , visible_lang: "zh"},
             { type:"engine", name:"baidu_translate" , visible_lang: "zh"},
             { type:"engine", name:"deepl"},
+            { type:"engine", name:"fsou_translate" , visible_lang: "zh"},
             { type:"engine", name:"cambridge"},
             { type:"engine", name:"google_translate"},
             { type:"engine", name:"bing_dict" , visible_lang: "zh"},
@@ -183,6 +188,10 @@ catas = {
             { type:"engine", name:"bing_ac"},
             { type:"engine", name:"wikip_zh", visible_lang: "zh"},
             { type:"engine", name:"wikip_en", visible_lang: "en"},
+            { type:"engine", name:"wolframalpha"},
+            { type:"engine", name:"hudongbaike", visible_lang: "zh"},
+            { type:"engine", name:"sogoubaike", visible_lang: "zh"},
+            { type:"engine", name:"360baike", visible_lang: "zh"},
         ],
     },
     "han": {
@@ -250,6 +259,37 @@ sEngines = {
             }
         }
     },
+    "fsou": {
+        dname: "F搜", 
+        addr: "https://fsoufsou.com/", 
+        action: "https://fsoufsou.com/search", 
+        kw_key: "q", 
+    }, 
+    "fsou_img": {
+        dname: "F搜", 
+        addr: "https://fsoufsou.com/", 
+        action: "https://fsoufsou.com/search", 
+        kw_key: "q", 
+        btns: {
+            "img": {
+                label: "图片", 
+                params: [
+                    {key: "tbn", val: "images"}, 
+                ], 
+            }, 
+        }, 
+    }, 
+    "fsou_translate": {
+        dname: "F翻译", 
+        addr: "https://fsoufsou.com/translate", 
+        action: "https://fsoufsou.com/translate", 
+        btns: {
+            "translate": {
+                label: "翻译", 
+                ajax: [1500,  "textarea#translate-input-el"]
+            }, 
+        }, 
+    }, 
     "sogou": {
         "dname": "搜狗搜索",
         "addr": "https://www.sogou.com",
@@ -1057,10 +1097,6 @@ sEngines = {
         "action": "https://zh.wikipedia.org/w/index.php",
         "kw_key": "search",
         "btns": {
-            "go": {
-                "label": "进入",
-                full_url: "https://zh.wikipedia.org/wiki/{0}"
-            },
             "search": {
                 "label": "搜索",
                 "params": [
@@ -1070,12 +1106,9 @@ sEngines = {
                     }
                 ]
             },
-            "go_en": {
-                "label": "Go",
-                "use_other_engine": {
-                    "engine": "wikip_en",
-                    "btn": "go"
-                }
+            "go": {
+                "label": "进入",
+                full_url: "https://zh.wikipedia.org/wiki/{0}"
             },
             "sch_en": {
                 "label": "Search",
@@ -1083,7 +1116,14 @@ sEngines = {
                     "engine": "wikip_en",
                     "btn": "search"
                 }
-            }
+            }, 
+            "go_en": {
+                "label": "Go",
+                "use_other_engine": {
+                    "engine": "wikip_en",
+                    "btn": "go"
+                }
+            },
         }
     },
     "wikip_en": {
@@ -1092,9 +1132,6 @@ sEngines = {
         "action": "https://en.wikipedia.org/w/index.php",
         "kw_key": "search",
         "btns": {
-            "go": {
-                "label": "Go"
-            },
             "search": {
                 "label": "Search",
                 "params": [
@@ -1103,9 +1140,63 @@ sEngines = {
                         "val": "1"
                     }
                 ]
-            }
+            }, 
+            "go": {
+                "label": "Go"
+            },
         }
     },
+    "wolframalpha": {
+        dname: "WolframAlpha", 
+        addr: "https://www.wolframalpha.com", 
+        action: "https://www.wolframalpha.com/input", 
+        kw_key: "i", 
+        btns: {
+            "nl": {
+                label: "Natural Language", 
+            }, 
+            "math": {
+                label: "Math Input", 
+                params: [
+                    {key: "i2d", val: "true"}, 
+                ], 
+            }, 
+        }, 
+    }, 
+    "hudongbaike": {
+        dname: "快懂百科", 
+        addr: "https://www.baike.com/", 
+        action: "https://www.baike.com/search", 
+        kw_key: "keyword", 
+    }, 
+    "sogoubaike": {
+        dname: "搜狗百科", 
+        addr: "https://baike.sogou.com/", 
+        action: "https://www.sogou.com/sogou", 
+        kw_key: "query", 
+        params: [
+            {key: "ie", val: "utf8"}, 
+            {key: "insite", val: "baike.sogou.com"}, 
+        ], 
+    }, 
+    "360baike": {
+        dname: "360百科", 
+        addr: "https://baike.so.com/", 
+        btns: {
+            "search": {
+                label: "搜索词条",  
+                action: "https://baike.so.com/search/", 
+                kw_key: "q", 
+            }, 
+            "enter": {
+                label: "进入词条", 
+                action: "https://baike.so.com/doc/search", 
+                kw_key: "word", 
+            }
+        }, 
+        
+    }, 
+    
     "fdroid": {
         "dname": "F-Droid",
         "addr": "https://f-droid.org/",
@@ -1432,6 +1523,37 @@ sEngines = {
             }
         }
     },
+    
+    "manpage": {
+        dname: "Man Pages", 
+        btns: {
+            "he": {
+                label: "Hurricane Electric", 
+                action: "http://man.he.net/", 
+                kw_key: "topic", 
+                params: [
+                    {key: "section", val: "all"}
+                ], 
+            }, 
+            "debian": {
+                label: "Debian", 
+                action: "https://manpages.debian.org/jump", 
+                kw_key: "q", 
+            }, 
+            "ubuntu": {
+                label: "Ubuntu", 
+                action: "https://manpages.ubuntu.com/cgi-bin/search.py", 
+                kw_key: "q", 
+            }, 
+            "opensuse": {
+                label: "openSUSE", 
+                action: "https://manpages.opensuse.org/jump", 
+                kw_key: "q", 
+            }, 
+
+        }, 
+    }, 
+    
     "homebrew": {
         "dname": "Homebrew",
         "addr": "https://formulae.brew.sh/",
@@ -1817,6 +1939,13 @@ sEngines = {
             },
         }
     },
+    "ms_up_cata": {
+        dname: "Microsoft Update Catalog", 
+        tip: `It's a service from Microsoft that provides a listing of updates that can be distributed over a corporate network. You can use it as a one-stop location for finding Microsoft software updates, drivers, and hotfixes.\n\nThe Microsoft Update Catalog lets you search on a variety of update fields and categories. These include the update title, description, applicable products, classifications, and knowledge base articles (e.g. KB9123456). When searching for hardware updates ("drivers"), you can also search for driver model, manufacturer, class, or a 4-part hardware id (e.g "PCI\VEN_14E4&DEV_1677&SUBSYS_01AD1028"). You can narrow the scope of your search by adding additional search terms.`, 
+        addr: "https://catalog.update.microsoft.com/", 
+        action: "https://catalog.update.microsoft.com/Search.aspx", 
+        kw_key: "q", 
+    }, 
     "feixiaohao": {
         dname: "非小号",
         addr: "https://www.feixiaohao.com/",
diff --git a/src/i_layout.css b/src/i_layout.css
index d4bd909..2edfb29 100644
--- a/src/i_layout.css
+++ b/src/i_layout.css
@@ -171,7 +171,7 @@ a {
 }
 #index_title, #index_title a  { 
     display: inline;  
-    margin-left: 10px;
+/*     margin-left: 10px; */
     color: var(--index-title-cl);
 }
 #index_subtitle { 
@@ -306,7 +306,10 @@ a {
     background-color: rgba(255,255,255, 0.7);
     color: blue;
 }
-
+.btns_copypaste_right .span_copypaste {
+    left: unset;
+    right: calc( 0px - var(--btns-below-input-height) );
+}
 
 
 #btn_ml_input {
@@ -437,7 +440,30 @@ a {
 .engine_tr:hover { 
     background-color: var(--engine-tr-hover-bg-cl); 
 }
+
+.span_egnTrNum {
+    position: absolute;
+    
+    cursor: default;
+    font-weight: lighter;
+    font-size: 12px;
+    transform: scale(0.6);
+    color: var(--enginename-td-cl);
+    top: 0;
+    left: -3px;
+    text-shadow: 1px 1px #000000c9;
+    height: 100%;
+    opacity: 0.6;
+    
+}
+.span_egnTrNum:hover {
+    opacity: unset; 
+    transform: unset;
+} 
+
 .enginename_td { 
+    position: relative;
+    
     padding:0px 10px 0px 5px; 
 /*     min-width:130px;  */
     /* white-space:nowrap; */
diff --git a/src/i_scripts.js b/src/i_scripts.js
index 1cba81a..bc2e75c 100644
--- a/src/i_scripts.js
+++ b/src/i_scripts.js
@@ -388,7 +388,7 @@ onrd.push(function(){
 });
 onrd.push(function() {
     document.getElementById("btn_search_permi").onclick = async function() {
-        await browser.permissions.request({ permissions: ["search"] });
+        await chrome.permissions.request({ permissions: ["search"] });
         document.getElementsByClassName("cata_btn_highlight")[0].click();
     };
 });
@@ -413,18 +413,21 @@ onrd.push(async function(){
 onrd.push(async function(){
     if (window.run_env != "http_web")
     {
-        if ( (await get_addon_setting("checkupdate")) !== true )
+        if (chrome.extension.inIncognitoContext)
             return;
         
-        if (getStor("news_text"))
-        {
-            document.getElementById("newver_link").textContent = getStor("news_text");
-            
-            if ( getStor("news_link") )
-                document.getElementById("newver_link").href = getStor("news_link");
+        if ( (await get_addon_setting("checkupdate")) !== true 
+            && ! (
+                (await get_addon_setting("checkupdate")) === undefined
+                && (  isFromStore(".microsoft.com") || isFromStore(".opera.com")  ) 
+            )
+        )
+            return;
+        
+        
+        show_news_text();
             
-            document.getElementById("newver").style.display = "unset";
-        }
+        setTimeout(maybe_checkupdate, 10 *1000);
     }
 });
 
@@ -464,7 +467,7 @@ async function make_cata_btns() {
     document.getElementById("catas_cont").appendChild(createCataBtn("user", "user"));
     
     if (window.run_env != "http_web") {
-        if (isFirefox )
+//         if (isFirefox )
             document.getElementById("catas_cont").appendChild(createCataBtn("browser", "browser"));
     }
     
diff --git a/src/js/checku.js b/src/js/checku.js
new file mode 100644
index 0000000..62549cb
--- /dev/null
+++ b/src/js/checku.js
@@ -0,0 +1,319 @@
+// var LSHandler = {};
+// 
+// async function init_LSHandler() {
+//     
+//     LSHandler = await LSHandlerClass();
+//     
+//     async function LSHandlerClass () { 
+//         this.storType = mv >= 3 ? "storage.session" : "localStorage" ; // TODO
+//         this.getStor = async function(itemName) {
+//             if (storType === "localStorage")
+//                 return getStor(itemName);
+//         };
+//         this.setStor = async function(itemName, value) {
+//             if (storType === "localStorage")
+//                 return setStor(itemName, value);
+//             
+//         };
+//         this.delStor = async function(itemName) {
+//             if (storType === "localStorage")
+//                 return delStor(itemName);
+//         };
+//          
+//         return this;
+//     }
+// }       
+//         
+        
+        
+        
+        
+        
+async function maybe_checkupdate() {
+//     parseGotNewsXml();
+    
+    if (await is_longengough_checknews() )
+        checkNews();
+    else
+    {
+//         console.debug("short time");
+    }
+}
+async function is_longengough_checknews()
+{
+    var nowTime ;
+    var lastSuccGotNewsTime ;
+    
+    lastSuccGotNewsTime = parseInt( getStor("lastSuccGotNewsTime") );
+    
+    if (!lastSuccGotNewsTime)
+        return true;
+    
+    nowTime = Date.now();
+    if ( (nowTime - lastSuccGotNewsTime) > (
+        10*60*60*1000 // for real
+//         20*1000 // for test
+    ) )
+        return true;
+}
+function saveNowAsLastNewsTime()
+{
+    setStor("lastSuccGotNewsTime", Date.now() );
+}
+
+
+async function checkNews() {
+    
+    const news_urls = [
+        "https://update.versioncheck.workers.dev/news",
+        "https://acsearch.cf/appnews.php",
+        "https://www.acsearch.ml/news.xml",
+        "https://garywill.gitlab.io/releaseapps-dl/news.xml",
+        `https://api.allorigins.win/raw?url=${encodeURIComponent('https://gitlab.com/garywill/releaseapps-dl/-/raw/main/news.xml')}`,
+        "https://jsonp.afeld.me/?url=https://gitlab.com/garywill/releaseapps-dl/-/raw/main/news.xml",
+    ];
+    
+    // for real
+    var url_use_sub = getRandomInt( news_urls.length -1 );
+    var news_url = news_urls [ url_use_sub ];
+    
+    // for test
+//     var news_url = "http://127.0.0.1:12000/appnews.php";
+//     console.log("downloading", news_url);
+    
+    await fetch(news_url).then(response => response.text()).then(textString => {
+        var xml = textString;
+        
+        try{
+            const parser = new DOMParser();
+            var xmlDoc = parser.parseFromString(xml, "text/xml");
+
+            var xmlBigsearch = xmlDoc.querySelector("news[app=bigsearch-addon]");
+            
+            const serializer = new XMLSerializer();
+            var serXmlStr = serializer.serializeToString(xmlBigsearch) ;
+            
+            setStor("latest_news_xml",serXmlStr)
+            parseGotNewsXml();
+            saveNowAsLastNewsTime();
+        }catch(err) {
+//             console.warn("Error on parsing downloaded latest news");
+//             console.warn(err);
+
+            clearShowingNews(true);
+        }
+    }) .catch(err => {
+//         console.warn("Error on fetching latest news");
+//         console.warn(err);
+        
+        clearShowingNews(true);
+    });
+}
+
+// called when 
+//  1. after successfully getting news 
+//  2. on addon loaded (possibly updated)
+async function parseGotNewsXml()  
+{
+    clearShowingNews(false);
+    
+    const xml = getStor("latest_news_xml");
+    
+    if (!xml)
+        return;
+    
+    const parser = new DOMParser();
+    var newsDoc;
+    newsDoc = parser.parseFromString(xml, "text/xml");
+    
+    
+    var filters = newsDoc.documentElement.querySelectorAll("filter") ;
+    for (var i=0; i<filters.length; i++) {
+        
+        if ( filters[i].getAttribute("version") )
+        {
+            const cur_ver = chrome.runtime.getManifest()['version'] ;
+            const [op, cmp_ver] = filters[i].getAttribute("version").split(' ');
+            if (op == "lt")  // lt = less than
+            {
+                if ( compareVer(cur_ver, cmp_ver) != -1 )
+                    continue;
+            }
+            else if (op == "le")  // le = less than or equal
+            {
+                if ( compareVer(cur_ver, cmp_ver) > 0 )
+                    continue;
+            }
+        }
+        
+        if ( filters[i].getAttribute("browsertype") == "chromium" )
+        {
+            if ( ! isChrome ) 
+                continue;
+        }
+        else if ( filters[i].getAttribute("browsertype") == "firefox" )
+        {
+            if ( ! isFirefox )
+                continue;
+        }
+        else if ( filters[i].getAttribute("browsertype") == "chrome-store" )
+        {
+            if ( ! isFromStore(".google.com") )
+                continue;
+        }
+        else if ( filters[i].getAttribute("browsertype") == "edge-store" )
+        {
+            if ( ! isFromStore(".microsoft.com") )
+                continue;
+        }
+        else if ( filters[i].getAttribute("browsertype") == "opera-store" )
+        {
+            if ( ! isFromStore(".opera.com") )
+                continue;
+        }
+        
+        if ( filters[i].getAttribute("installtype") == "hosted" )
+        {
+            if ( ( await ifNotStore() ) !== true )
+                continue;
+        }
+        
+        
+        parse_news(filters[i]);
+
+        break;
+    }
+    
+    async function parse_news( news_filter_tag ) 
+    {
+        //console.log("passed filter");
+        //console.log(news_filter_tag.outerHTML);
+        
+        if ( news_filter_tag.querySelector("switch") &&
+            news_filter_tag.querySelector("switch").getAttribute("show") == "false" 
+        ) 
+        {
+            clearShowingNews(false);
+            return;
+        }
+        
+        const lang = (await get_addon_setting("hl")) ;
+        var text = "";
+        if ( ! lang ) // language not set. use default language
+        {
+            text = news_filter_tag.querySelector(`lang[lang=en]`).getAttribute("text") ;
+        }else {
+            if ( news_filter_tag.querySelector(`lang[lang=${lang}]`) )
+                text =  news_filter_tag.querySelector(`lang[lang=${lang}]`).getAttribute("text") ;
+            else 
+                text =  news_filter_tag.querySelector(`lang[lang=en]`).getAttribute("text") ;
+        }
+        
+        if ( text )
+        {
+            setStor("news_text", text);
+            
+            if ( news_filter_tag.querySelector("link") && 
+                news_filter_tag.querySelector("link").getAttribute("link") 
+            )
+                setStor("news_link", news_filter_tag.querySelector("link").getAttribute("link") );
+        }
+        
+        //console.log( getStor('news_text') );
+        //console.log( getStor('news_link') );
+        
+    }
+    
+    // https://stackoverflow.com/a/53387532/10617713
+    // Function returns:
+    // 0 : a = b
+    // 1 : a > b
+    // -1 : a < b
+    function compareVer(a, b)
+    {
+        function prep(t)
+        {
+            return ("" + t)
+            //treat non-numerical characters as lower version
+            //replacing them with a negative number based on charcode of first character
+            .replace(/[^0-9\.]+/g, function(c){return "." + ((c = c.replace(/[\W_]+/, "")) ? c.toLowerCase().charCodeAt(0) - 65536 : "") + "."})
+            //remove trailing "." and "0" if followed by non-numerical characters (1.0.0b);
+            .replace(/(?:\.0+)*(\.-[0-9]+)(\.[0-9]+)?\.*$/g, "$1$2")
+            .split('.');
+        }
+        a = prep(a);
+        b = prep(b);
+        for (var i = 0; i < Math.max(a.length, b.length); i++)
+        {
+            //convert to integer the most efficient way
+            a[i] = ~~a[i];
+            b[i] = ~~b[i];
+            if (a[i] > b[i])
+                return 1;
+            else if (a[i] < b[i])
+                return -1;
+        }
+        return 0;
+    }
+    
+    async function ifNotStore() {
+        if ( isFromStore(".google.com") || isFromStore(".microsoft.com") || isFromStore(".opera.com") )
+            return false;
+        
+        if (isFirefox && browser.runtime.getManifest()['browser_specific_settings'] 
+                && browser.runtime.getManifest()['browser_specific_settings']['gecko']
+                && browser.runtime.getManifest()['browser_specific_settings']['gecko']['update_url']
+        )
+            return true;
+        
+        if ( (await getInstallType() ) != "normal" ) 
+            return true;
+
+        if (isFirefox && chrome.runtime.id != "{45a03d78-2183-4d73-afe4-cfda260d1308}")
+            return true;
+        
+        if (isChrome && chrome.runtime.id == "gaalgfdodackblpbckbllfghldhhmehb")
+            return true;
+        
+
+    }
+    
+}
+    
+    
+function isFromStore(storeDomain) {
+    const buildin_update = chrome.runtime.getManifest()['update_url'] ;
+    if ( typeof ( buildin_update ) == "string" ){
+        const buildin_update_host = buildin_update.split('/')[2];
+        if ( buildin_update_host.endsWith(storeDomain) )
+            return true;
+    }
+    return false;
+}
+
+function clearShowingNews(if_del_xml=false) {
+    if (if_del_xml)
+        delStor("latest_news_xml");
+    
+    delStor("news_text");
+    delStor("news_link");
+}
+
+function show_news_text()
+{
+    if (getStor("news_text"))
+    {
+        const newver_link = document.getElementById("newver_link");
+        
+        newver_link.textContent = getStor("news_text");
+        
+        if ( getStor("news_link") )
+            newver_link.href = getStor("news_link");
+        
+        document.getElementById("newver").style.display = "unset";
+    }
+}
+function unshow_news_text()
+{
+    document.getElementById("newver").style.display = "none";
+}
diff --git a/src/js/mtm.js b/src/js/mtm.js
index a491278..c1cd94f 100644
--- a/src/js/mtm.js
+++ b/src/js/mtm.js
@@ -27,7 +27,7 @@ async function do_stati()
             rand_str: function(n) {  
                 var s = [];
                 for (var i=0; i<n; i++) {
-                    s.push( Array.from(mtm.chardb) [ getRandomInt(mtm.chardb.length) ] );
+                    s.push( Array.from(mtm.chardb) [ getRandomInt(mtm.chardb.length -1) ] );
                 }
                 return s.join('');
             },
@@ -88,6 +88,3 @@ async function stati_goclicked (obj) {
 }
 
 
-function getRandomInt(max) {
-    return Math.floor(Math.random() * max);
-}
diff --git a/src/js/themeHandler.js b/src/js/themeHandler.js
index 114ac56..be80ed0 100644
--- a/src/js/themeHandler.js
+++ b/src/js/themeHandler.js
@@ -252,7 +252,13 @@ async function init_themeHandler() {
             const tNames = Object.keys(themeHandler.themes);
             
             function getNewRandomTheme() {
-                var N = getRandomInt(tNames.length -2) +1 ; // last one is 'no'. first one is default
+                // last one is 'no'. first one is 'default'. exclude those two
+                var N = getRandomInt( 
+                    (tNames.length - 2 ) // the true length of wanted range
+                    - 1 // true length -1 to be index (the function output range includes 0)
+                    )
+                    +1 // the first one is excluded. shift 1
+                    ; 
                 var name = tNames[N];
                 return name;
             }
diff --git a/src/js/useraction.js b/src/js/useraction.js
index 4042253..24815b1 100644
--- a/src/js/useraction.js
+++ b/src/js/useraction.js
@@ -81,6 +81,9 @@ async function cata_onclick(btnobj)
     if (oldTable)
         oldTable.parentNode.removeChild(oldTable);
     
+    if (isFirefox && btnobj.getAttribute("dbname")=="browser" && await browser.permissions.contains( { permissions: ["search"] } ) )
+        await fetch_browser_engines();   
+    
     if (btnobj.getAttribute("dbname")=="user")
     {
         
@@ -97,22 +100,40 @@ async function cata_onclick(btnobj)
     }
     
     
+    engines_cont.appendChild( createETableByCata( btnobj.getAttribute('name'), btnobj.getAttribute('dbname'), 'engines_table'));
+    
+    
+    
     if (btnobj.getAttribute("dbname")=="browser")
     {
         document.getElementById("div_search_permi").style.display = "none";
-        if ( ! await browser.permissions.contains( { permissions: ["search"] } ) )
+        
+        if ( 
+            ( isFirefox && ! await browser.permissions.contains( { permissions: ["search"] } ) )
+            ||
+            ( isChrome && 
+                ! await ( new Promise((resolve, reject) => {
+                    chrome.permissions.contains( { permissions: ["search"] } , function(r) {
+                        if (chrome.runtime.lastError) 
+                            return reject(chrome.runtime.lastError);
+                        resolve(r);
+                    });
+                }) )            
+            )
+        )
+        { 
             document.getElementById("div_search_permi").style.display = "";
-            
-        try {
-            await fetch_browser_engines();
-        }catch(err) { }
+            document.getElementById("engines_table").style.visibility = "hidden";
+        }
     }else{
         document.getElementById("div_search_permi").style.display = "none";
     }
+}
+async function cata_onclick_ui(btnobj)
+{
+    const dbname=btnobj.getAttribute("dbname");
+    const cata=btnobj.getAttribute("cata");
     
-    engines_cont.appendChild( createETableByCata( btnobj.getAttribute('name'), btnobj.getAttribute('dbname'), 'engines_table'));
-    
-
     Array.from( document.getElementsByClassName("cata_btns") ).forEach(function(ele){
         ele.classList.remove("cata_btn_highlight");
     });
diff --git a/src/manifest-chrome.json b/src/manifest-chrome.json
index 07f2555..455b08c 100644
--- a/src/manifest-chrome.json
+++ b/src/manifest-chrome.json
@@ -3,7 +3,7 @@
     "description": "__MSG_extensionDescription__",
     "default_locale": "en",
     "manifest_version": 2,
-    "version": "2.15.0",
+    "version": "2.15.5",
     "homepage_url": "https://github.com/garywill/BigSearch",
     "author": {
         "name": "Garywill",
@@ -17,6 +17,7 @@
         "*://garywill.github.io/BigSearch/*"
     ],
     "optional_permissions": [
+        "search",
         "clipboardRead",
         "activeTab",
         "*://*/*"
diff --git a/src/manifest.json b/src/manifest.json
index e0fe559..3f6390a 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -3,7 +3,7 @@
     "description": "__MSG_extensionDescription__",
     "default_locale": "en",
     "manifest_version": 2,
-    "version": "2.15.0",
+    "version": "2.15.5",
     "homepage_url": "https://garywill.github.io",
     "developer": {
         "name": "Garywill",