X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matitaB%2Fmatita%2Fmatitaweb.js;h=4b99a23a286a471ca341f67c8fd4f4da25f3d8be;hb=33e69ace76c39b928f8c38a1130dc54fa2255889;hp=0cf29e3493241df078acf5bd79e4aaa73f67c2f2;hpb=98a02c0402c29eceb2c07b45ab2383983f13cc95;p=helm.git

diff --git a/matitaB/matita/matitaweb.js b/matitaB/matita/matitaweb.js
index 0cf29e349..4b99a23a2 100644
--- a/matitaB/matita/matitaweb.js
+++ b/matitaB/matita/matitaweb.js
@@ -114,11 +114,40 @@ function keypress(e)
    pressmesg('keypress',e);
    var s = string_of_key(e.charCode);
    if (s == " ") {
-	i = unlocked.innerHTML.lastIndexOf('\\',getCursorPos());
+	j = getCursorPos();
+	i = unlocked.innerHTML.lastIndexOf('\\',j);
        	if (i >= 0) {
-	  window.alert("found " + unlocked.innerHTML.substring(i,getCursorPos()));
+	  match = unlocked.innerHTML.substring(i,j);
+	  pre = unlocked.innerHTML.substring(0,i);
+	  post = unlocked.innerHTML.substring(j);
+	  if (match == '\\to') {
+             unlocked.innerHTML = pre + "-> " + post;
+	     unlocked.focus();
+             if (savedRange != null) {
+                 if (window.getSelection)//non IE and there is already a selection
+                 {
+                     var s = window.getSelection();
+                     if (s.rangeCount > 0) 
+                         s.removeAllRanges();
+                     s.addRange(savedRange);
+                 }
+                 else 
+                     if (document.createRange)//non IE and no selection
+                     {
+                         window.getSelection().addRange(savedRange);
+                     }
+                     else 
+                         if (document.selection)//IE
+                         {
+                             savedRange.select();
+                         }
+             }
+
+ 	     return suppressdefault(e,true);
+	  }
+	  else return suppressdefault(e,false);
 	}
- 	return suppressdefault(e,true);
+	else return suppressdefault(e,false);
    } else {
 	return suppressdefault(e,false);
    }
@@ -609,19 +638,21 @@ function removeElement(id) {
   element.parentNode.removeChild(element);
 } 
 
+var savedRange;
+
 function getCursorPos() {
   var cursorPos;
   if (window.getSelection) {
     var selObj = window.getSelection();
-    var selRange = selObj.getRangeAt(0);
+    savedRange = selObj.getRangeAt(0);
     //cursorPos =  findNode(selObj.anchorNode.parentNode.childNodes, selObj.anchorNode) + selObj.anchorOffset;
     cursorPos =  findNode(unlocked.childNodes, selObj.anchorNode,0) + selObj.anchorOffset;
     /* FIXME the following works wrong in Opera when the document is longer than 32767 chars */
     return(cursorPos);
   }
   else if (document.selection) {
-    var range = document.selection.createRange();
-    var bookmark = range.getBookmark();
+    savedRange = document.selection.createRange();
+    var bookmark = savedRange.getBookmark();
     /* FIXME the following works wrong when the document is longer than 65535 chars */
     cursorPos = bookmark.charCodeAt(2) - 11; /* Undocumented function [3] */
     return(cursorPos);