Fix wenzhixin#61: the hidden table reset header bug.

Author: wenzhixin

docs/examples.html

@@ -65,6 +65,7 @@ <h1>Examples</h1>
         <p>The examples of bootstrap table.</p>
     </div>
 </div>
+
 <div class="container">
     <div class="row">
         <div class="col-md-3 span3">
@@ -129,7 +130,12 @@ <h2>Use API:</h2>
                     </ul>
                 </div>
                 <div class="page-header">
-                    <h1 id="basic-table">Basic Table</h1>
+                    <h1 id="basic-table">
+                        Basic Table
+                        <button class="btn btn-primary" data-toggle="modal" data-target="#myModal">
+                            Launch modal
+                        </button>
+                    </h1>
                 </div>
                 <div class="bs-example">
                     <table data-toggle="table" data-url="data1.json" data-height="299">
@@ -143,6 +149,33 @@ <h1 id="basic-table">Basic Table</h1>
                     </table>
                 </div>
                 <div class="highlight"><pre><code class="language-html"></code></pre></div>
+
+                <!-- Modal -->
+                <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
+                    <div class="modal-dialog">
+                        <div class="modal-content">
+                            <div class="modal-header">
+                                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
+                                <h4 class="modal-title" id="myModalLabel">Basic Table</h4>
+                            </div>
+                            <div class="modal-body">
+                                <table data-toggle="table" data-url="data1.json" data-height="299">
+                                    <thead>
+                                    <tr>
+                                        <th data-field="id">Item ID</th>
+                                        <th data-field="name">Item Name</th>
+                                        <th data-field="price">Item Price</th>
+                                    </tr>
+                                    </thead>
+                                </table>
+                            </div>
+                            <div class="modal-footer">
+                                <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
+                                <button type="button" class="btn btn-primary" data-dismiss="modal">OK</button>
+                            </div>
+                        </div>
+                    </div>
+                </div>
             </div>
 
             <div>

src/bootstrap-table.js

@@ -51,6 +51,7 @@
         this.options = options;
         this.$el = $(el);
         this.$el_ = this.$el.clone();
+        this.timeoutId_ = 0;
 
         this.init();
     };
@@ -904,6 +905,13 @@
     BootstrapTable.prototype.resetHeader = function () {
         var that = this;
 
+        // fix #61: the hidden table reset header bug.
+        if (this.$el.is(':hidden')) {
+            clearTimeout(this.timeoutId_); // doesn't matter if it's 0
+            this.timeoutId_ = setTimeout($.proxy(this.resetHeader, this), 100); // 100ms
+            return;
+        }
+
         this.$header_ = this.$header.clone(true);
         this.$selectAll_ = this.$header_.find('[name="btSelectAll"]');
         this.$el.css('margin-top', -this.$header.height());