jQuery EasyUI Applications -Creating an RSS Feed Reader

In this tutorial, we will create an RSS reader using the jQuery EasyUI framework.

We will use the following plugins:

  • layout: Create the user interface of the application.
  • datagrid: Display the RSS Feed list.
  • tree: Display feed channels.

Step 1: Create Layout

<body class="easyui-layout">
    <div region="north" border="false" class="rtitle">
        jQuery EasyUI RSS Reader Demo
    </div>
    <div region="west" title="Channels Tree" split="true" border="false" style="width:200px;background:#EAFDFF;">
        <ul id="t-channels" url="data/channels.json"></ul>
    </div>
    <div region="center" border="false">
        <div class="easyui-layout" fit="true">
            <div region="north" split="true" border="false" style="height:200px">
                <table id="dg" 
                        url="get_feed.php" border="false" rownumbers="true"
                        fit="true" fitColumns="true" singleSelect="true">
                    <thead>
                        <tr>
                            <th field="title" width="100">Title</th>
                            <th field="description" width="200">Description</th>
                            <th field="pubdate" width="80">Publish Date</th>
                        </tr>
                    </thead>
                </table>
            </div>
            <div region="center" border="false" style="overflow:hidden">
                <iframe id="cc" scrolling="auto" frameborder="0" style="width:100%;height:100%"></iframe>
            </div>
        </div>
    </div>
</body>

Step 2: DataGrid Event Handling

Here we need to handle some events triggered by the user.

$('#dg').datagrid({
    onSelect: function(index,row){
        $('#cc').attr('src', row.link);
    },
    onLoadSuccess:function(){
        var rows = $(this).datagrid('getRows');
        if (rows.length){
            $(this).datagrid('selectRow',0);
        }
    }
});

This example uses the 'onSelect' event to display the feed content, and uses the 'onLoadSuccess' event to select the first row.

Step 3: Tree Event Handling

When the Tree data has been loaded, we need to select the first leaf node, and call the 'select' method to select that node. Use the 'onSelect' event to get the selected node, so we can get the corresponding 'url' value. Finally, we call the DataGrid's 'load' method to refresh the feed list data.

$('#t-channels').tree({
    onSelect: function(node){
        var url = node.attributes.url;
        $('#dg').datagrid('load',{
            url: url
        });
    },
    onLoadSuccess:function(node,data){
        if (data.length){
            var id = data[0].children[0].children[0].id;
            var n = $(this).tree('find', id);
            $(this).tree('select', n.target);
        }
    }
});

Download jQuery EasyUI Examples

jeasyui-app-rssreader.zip

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