Added clickable icon to collapse pager

Closes  #3196

IPython/frontend/html/notebook/static/js/pager.js

@@ -1,164 +1,174
 //----------------------------------------------------------------------------
 //  Copyright (C) 2008-2011  The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // Pager
 //============================================================================
 
 var IPython = (function (IPython) {
 
     var utils = IPython.utils;
 
     var Pager = function (pager_selector, pager_splitter_selector) {
         this.pager_element = $(pager_selector);
         this.pager_button_area = $('#pager_button_area');
         var that = this;
         this.percentage_height = 0.40;
         this.pager_splitter_element = $(pager_splitter_selector)
             .draggable({
                         containment: 'window',
                         axis:'y',
                         helper: null ,
                         drag: function(event, ui) {
                             // recalculate the amount of space the pager should take
                             var pheight = ($(body).height()-event.clientY-4);
                             var downprct = pheight/IPython.layout_manager.app_height();
                                 downprct = Math.min(0.9, downprct);
                             if (downprct < 0.1) {
                                 that.percentage_height = 0.1;
                                 that.collapse({'duration':0});
                             } else if (downprct > 0.2) {
                                 that.percentage_height = downprct;
                                 that.expand({'duration':0});
                             }
                             IPython.layout_manager.do_resize();
                        }
             });
         this.expanded = false;
         this.style();
         this.create_button_area();
         this.bind_events();
     };
 
     Pager.prototype.create_button_area = function(){
         var that = this;
         this.pager_button_area.append(
             $('<a>').attr('role', "button")
-                    .attr('title',"open the pager in an external window")
+                    .attr('title',"Open the pager in an external window")
                     .addClass('ui-button')
                     .click(function(){that.detach()})
-                    .attr('style','position: absolute; right: 10px;')
+                    .attr('style','position: absolute; right: 20px;')
                     .append(
                         $('<span>').addClass("ui-icon ui-icon-extlink")
                     )
         )
+        this.pager_button_area.append(
+            $('<a>').attr('role', "button")
+                    .attr('title',"Collapse the pager")
+                    .addClass('ui-button')
+                    .click(function(){that.collapse()})
+                    .attr('style','position: absolute; right: 5px;')
+                    .append(
+                        $('<span>').addClass("ui-icon ui-icon-close")
+                    )
+        )
     };
 
     Pager.prototype.style = function () {
         this.pager_splitter_element.addClass('border-box-sizing ui-widget ui-state-default');
         this.pager_element.addClass('border-box-sizing ui-widget');
         this.pager_splitter_element.attr('title', 'Click to Show/Hide pager area, drag to Resize');
     };
 
 
     Pager.prototype.bind_events = function () {
         var that = this;
 
         this.pager_element.bind('collapse_pager', function (event, extrap) {
             var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
             that.pager_element.hide(time);
         });
 
         this.pager_element.bind('expand_pager', function (event, extrap) {
             var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
             that.pager_element.show(time);
         });
 
         this.pager_splitter_element.hover(
             function () {
                 that.pager_splitter_element.addClass('ui-state-hover');
             },
             function () {
                 that.pager_splitter_element.removeClass('ui-state-hover');
             }
         );
 
         this.pager_splitter_element.click(function () {
             that.toggle();
         });
 
         $([IPython.events]).on('open_with_text.Pager', function (event, data) {
             if (data.text.trim() !== '') {
                 that.clear();
                 that.expand();
                 that.append_text(data.text);
             };
         });
     };
 
 
     Pager.prototype.collapse = function (extrap) {
         if (this.expanded === true) {
             this.expanded = false;
             this.pager_element.add($('div#notebook')).trigger('collapse_pager', extrap);
         };
     };
 
 
     Pager.prototype.expand = function (extrap) {
         if (this.expanded !== true) {
             this.expanded = true;
             this.pager_element.add($('div#notebook')).trigger('expand_pager', extrap);
         };
     };
 
 
     Pager.prototype.toggle = function () {
         if (this.expanded === true) {
             this.collapse();
         } else {
             this.expand();
         };
     };
 
 
     Pager.prototype.clear = function (text) {
         this.pager_element.empty();
     };
 
     Pager.prototype.detach = function(){
         var w = window.open("","_blank")
         $(w.document.head)
         .append(
                 $('<link>')
                 .attr('rel',"stylesheet")
                 .attr('href',"/static/css/notebook.css")
                 .attr('type',"text/css")
         )
         .append(
                 $('<title>').text("IPython Pager")
         );
         var pager_body = $(w.document.body)
             pager_body.attr('style','overflow:scroll');
 
         pager_body.append(this.pager_element.children())
         w.document.close();
         this.collapse();
 
     }
 
     Pager.prototype.append_text = function (text) {
         this.pager_element.append($('<pre/>').html(utils.fixCarriageReturn(utils.fixConsole(text))));
     };
 
 
     IPython.Pager = Pager;
 
     return IPython;
 
 }(IPython));