Mercurial > web-gnusto

changeset 88:f8d853a77c52

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The window no longer auto-scrolls all the way to the bottom of the page unconditionally; if text has been displayed that the user needs to read, the viewport is only scrolled to the last point that we know the user has read up to, which is the last point that we took input from the user.
author Atul Varma <varmaa@toolness.com>
date Thu, 22 May 2008 00:00:14 -0700
parents e48403e2a3b5
children 0e1eb40ac12b
files web-zui.js
diffstat 1 files changed, 8 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/web-zui.js	Wed May 21 22:00:48 2008 -0700
+++ b/web-zui.js	Thu May 22 00:00:14 2008 -0700
@@ -10,6 +10,7 @@
   this._foreground = "default";
   this._background = "default";
   this._reverseVideo = false;
+  this._lastSeenY = 0;
   this._currStyles = ["z-roman"];
 
   if (logfunc) {
@@ -28,7 +29,7 @@
     },
 
     _scrollBottomWindow: function() {
-      window.scroll(0, document.body.scrollHeight);
+      window.scroll(0, self._lastSeenY);
     },
 
     _finalize: function() {
@@ -109,6 +110,10 @@
 
             self._currentCallback = null;
             self._removeBufferedWindows();
+
+            // TODO: This may not be the most accurate calculation.
+            self._lastSeenY = document.height;
+
             callback(keyCode);
           }
         }
@@ -137,6 +142,7 @@
           self._inputString = "";
           self._currentCallback = null;
           finalInputString = finalInputString.entityify();
+          self._lastSeenY = $("#current-input").get(0).offsetTop;
           $("#current-input").replaceWith(
             ('<span class="finished-input">' + finalInputString +
              '</span><br/>')
@@ -169,6 +175,7 @@
 
     _eraseBottomWindow: function() {
       $("#content").empty();
+      this._lastSeenY = 0;
     },
 
     setVersion: function(version) {