rework the transitions for the modal a bit

bootstrap-1.3.0.css

@@ -6,7 +6,7 @@
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Designed and built with all the love in the world @twitter by @mdo and @fat.
- * Date: Sat Sep 10 15:29:50 PDT 2011
+ * Date: Sat Sep 10 18:12:41 PDT 2011
  */
 /* Reset.less
  * Props to Eric Meyer (meyerweb.com) for his CSS reset file. We're using an adapted version here	that cuts out some of the reset HTML elements we will never need here (i.e., dfn, samp, etc).
@@ -1977,10 +1977,10 @@ button.btn::-moz-focus-inner, input[type=submit].btn::-moz-focus-inner {
   opacity: 0;
 }
 .modal-backdrop, .modal-backdrop.fade.in {
-  filter: alpha(opacity=50);
-  -khtml-opacity: 0.5;
-  -moz-opacity: 0.5;
-  opacity: 0.5;
+  filter: alpha(opacity=70);
+  -khtml-opacity: 0.7;
+  -moz-opacity: 0.7;
+  opacity: 0.7;
 }
 .modal {
   position: fixed;
@@ -2008,6 +2008,17 @@ button.btn::-moz-focus-inner, input[type=submit].btn::-moz-focus-inner {
 .modal .close {
   margin-top: 7px;
 }
+.modal.fade {
+  -webkit-transition: opacity .25s linear, top .25s ease-out;
+  -moz-transition: opacity .25s linear, top .25s ease-out;
+  -ms-transition: opacity .25s linear, top .25s ease-out;
+  -o-transition: opacity .25s linear, top .25s ease-out;
+  transition: opacity .25s linear, top .25s ease-out;
+  top: -50%;
+}
+.modal.fade.in {
+  top: 50%;
+}
 .modal-header {
   border-bottom: 1px solid #eee;
   padding: 5px 15px;

bootstrap-1.3.0.min.css

@@ -274,8 +274,10 @@ button.btn::-moz-focus-inner,input[type=submit].btn::-moz-focus-inner{padding:0;
 .pagination .next a{border:0;}
 .well{background-color:#f5f5f5;margin-bottom:20px;padding:19px;min-height:20px;border:1px solid #eee;border:1px solid rgba(0, 0, 0, 0.05);-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;-webkit-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);-moz-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);}
 .modal-backdrop{background-color:#000;position:fixed;top:0;left:0;right:0;bottom:0;z-index:1000;}.modal-backdrop.fade{opacity:0;}
-.modal-backdrop,.modal-backdrop.fade.in{filter:alpha(opacity=50);-khtml-opacity:0.5;-moz-opacity:0.5;opacity:0.5;}
+.modal-backdrop,.modal-backdrop.fade.in{filter:alpha(opacity=70);-khtml-opacity:0.7;-moz-opacity:0.7;opacity:0.7;}
 .modal{position:fixed;top:50%;left:50%;z-index:2000;width:560px;margin:-250px 0 0 -250px;background-color:#ffffff;border:1px solid #999;border:1px solid rgba(0, 0, 0, 0.3);*border:1px solid #999;-webkit-border-radius:6px;-moz-border-radius:6px;border-radius:6px;-webkit-box-shadow:0 3px 7px rgba(0, 0, 0, 0.3);-moz-box-shadow:0 3px 7px rgba(0, 0, 0, 0.3);box-shadow:0 3px 7px rgba(0, 0, 0, 0.3);-webkit-background-clip:padding-box;-moz-background-clip:padding-box;background-clip:padding-box;}.modal .close{margin-top:7px;}
+.modal.fade{-webkit-transition:opacity .25s linear, top .25s ease-out;-moz-transition:opacity .25s linear, top .25s ease-out;-ms-transition:opacity .25s linear, top .25s ease-out;-o-transition:opacity .25s linear, top .25s ease-out;transition:opacity .25s linear, top .25s ease-out;top:-50%;}
+.modal.fade.in{top:50%;}
 .modal-header{border-bottom:1px solid #eee;padding:5px 15px;}
 .modal-body{padding:15px;}
 .modal-footer{background-color:#f5f5f5;padding:14px 15px 15px;border-top:1px solid #ddd;-webkit-border-radius:0 0 6px 6px;-moz-border-radius:0 0 6px 6px;border-radius:0 0 6px 6px;-webkit-box-shadow:inset 0 1px 0 #ffffff;-moz-box-shadow:inset 0 1px 0 #ffffff;box-shadow:inset 0 1px 0 #ffffff;zoom:1;margin-bottom:0;text-align:right;}.modal-footer:before,.modal-footer:after{display:table;content:"";zoom:1;*display:inline;}

js/bootstrap-modal.js

@@ -59,16 +59,17 @@
       this.isShown = true
 
       _.escape.call(this)
-      _.backdrop.call(this)
+      _.backdrop.call(this, function () {
 
-      this.$element
-        .appendTo(document.body)
-        .show()
+        that.$element
+          .appendTo(document.body)
+          .show()
 
-      setTimeout(function () {
-        that.$element.addClass('in').trigger('modal:shown')
-        that.$backdrop && that.$backdrop.addClass('in')
-      }, 1)
+        setTimeout(function () {
+          that.$element.addClass('in').trigger('modal:shown')
+        }, 1)
+
+      })
 
       return this
     }
@@ -81,19 +82,19 @@
       this.isShown = false
 
       _.escape.call(this)
-      _.backdrop.call(this)
 
       this.$element.removeClass('in')
 
       function removeElement () {
+        _.backdrop.call(that)
+
         that.$element
-          .unbind(transitionEnd)
           .detach()
           .trigger('modal:hidden')
       }
 
       $.support.transition && this.$element.hasClass('fade') ?
-        this.$element.bind(transitionEnd, removeElement) :
+        this.$element.one(transitionEnd, removeElement) :
         removeElement()
 
       return this
@@ -107,13 +108,21 @@
 
   var _ = {
 
-    backdrop: function () {
+    backdrop: function ( callback ) {
       var that = this
         , animate = this.$element.hasClass('fade') ? 'fade' : ''
       if ( this.isShown && this.settings.backdrop ) {
         this.$backdrop = $('<div class="modal-backdrop ' + animate + '" />')
           .click($.proxy(this.hide, this))
           .appendTo(document.body)
+
+        setTimeout(function () {
+          that.$backdrop && that.$backdrop.addClass('in')
+
+          $.support.transition && that.$backdrop.hasClass('fade')?
+            that.$backdrop.one(transitionEnd, callback) :
+            callback()
+        })
       } else if ( !this.isShown && this.$backdrop ) {
         this.$backdrop.removeClass('in')
 
@@ -123,7 +132,7 @@
         }
 
         $.support.transition && this.$element.hasClass('fade')?
-          this.$backdrop.bind(transitionEnd, removeElement) :
+          this.$backdrop.one(transitionEnd, removeElement) :
           removeElement()
       }
     }

lib/patterns.less

@@ -725,9 +725,7 @@ input[type=submit].btn {
 
 .modal-backdrop {
   background-color:#000;
-  &.fade {
-    opacity: 0;
-  }
+  &.fade { opacity: 0; }
   position: fixed;
   top: 0;
   left: 0;
@@ -737,7 +735,7 @@ input[type=submit].btn {
 }
 
 .modal-backdrop, .modal-backdrop.fade.in {
-  .opacity(50);
+  .opacity(70);
 }
 
 .modal {
@@ -754,9 +752,12 @@ input[type=submit].btn {
   .border-radius(6px);
   .box-shadow(0 3px 7px rgba(0,0,0,0.3));
   .background-clip(padding-box);
-  .close {
-    margin-top: 7px;
+  .close { margin-top: 7px; }
+  &.fade {
+    .transition(e('opacity .25s linear, top .25s ease-out'));
+    top:-50%;
   }
+  &.fade.in { top: 50%;}
 }
 .modal-header {
   border-bottom: 1px solid #eee;