如何将表情面板添加到Extjs项目

Ext.application({
    name: 'EmojiPanelExample',
    launch: function () {
        Ext.create('Ext.panel.Panel', {
            title: 'Emoji Panel Example',
            width: 400,
            height: 300,
            renderTo: Ext.getBody(),
            items: [{
                xtype: 'textfield',
                fieldLabel: 'Input',
                anchor: '100%'
            }, {
                xtype: 'button',
                text: 'Open Emoji Panel',
                handler: function () {
                    var emojiPanel = Ext.create('Ext.panel.Panel', {
                        title: 'Emoji Panel',
                        width: 200,
                        height: 200,
                        floating: true,
                        renderTo: Ext.getBody(),
                        items: [{
                            xtype: 'grid',
                            columns: [{
                                text: 'Emoji',
                                dataIndex: 'emoji',
                                renderer: function (value) {
                                    return value;
                                }
                            }],
                            store: Ext.create('Ext.data.Store', {
                                fields: ['emoji'],
                                data: [{
                                    emoji: '😀'
                                }, {
                                    emoji: '😃'
                                }, {
                                    emoji: '😄'
                                }]
                            }),
                            listeners: {
                                itemclick: function (grid, record) {
                                    var emoji = record.get('emoji');
                                    var inputField = Ext.ComponentQuery.query('textfield')[0];
                                    inputField.setValue(inputField.getValue() + emoji);
                                    emojiPanel.close();
                                }
                            }
                        }]
                    });
                }
            }]
        });
    }
});