re-implement mdict lookup support

zh/searchurl/txt/mdict.html

@@ -74,30 +74,47 @@
       
     </section>
     <script>
-      //?file=./xxx/xx.xx,./xx/xx.xxx#word=
+      //?file=.../xx.xx,.../xx.xxx#word=
       var dictinput = document.getElementById('dictfile');
       var wordinput = document.getElementById('word');
       var btnLookup = document.getElementById('btnLookup');
 
-      window.onload = function() {
+      window.onhashchange = function() {
         let v = location.hash.substring(6);
-        wordinput.value = v;
+        if(v.length>0){
+          wordinput.value = v;
+          //wordinput.dispatchEvent(new Event('change', {'bubbles': true}));
+          btnLookup.click();
+        }
+      };
 
+      {
+        let v = location.hash.substring(6);
+        wordinput.value = v;
+      }
+      
+      {
         let filenames = location.search.substring(6);
+        window.onload = function(){
         if(filenames.length>0){
-          dictinput.setAttribute('accept',filenames);
-          location.href="i:5fdictinput.click()";
-          setTimeout(()=>{dictinput.dispatchEvent(new Event('change'));dictinput.removeAttribute('accept')},500);
+          let clickurl = "i:5fdictinput.click():"+filenames;
+          location.href=clickurl;
+          //setTimeout(()=>{dictinput.dispatchEvent(new Event('change', {'bubbles': true}));},100);
+    
+          var callbackTimer = setInterval(function() {
+            let files = dictinput.files;
+            if(files.length>0){
+              if(!btnLookup.disabled){
+                clearInterval(callbackTimer);
+                return;
+              }
+            }else
+              location.href=clickurl;
+            dictinput.dispatchEvent(new Event('change', {'bubbles': true}));
+          }, 100);
+        
         }
-        window.onhashchange = function() {
-          let v = location.hash.substring(6);
-          if(v.length>0){
-            wordinput.value = v;
-            //wordinput.dispatchEvent(new Event('change', {'bubbles': true}));
-            btnLookup.click();
-          }
         };
-
       }
     </script>
   </body>