Skip to main content

Ext JS 4 Grid State Management

ExtJS enables you allow your users to reorder grid columns using drag & drop. By combining this feature with Ext JS state management, you can let users customize the look of grids and preserve those settings on a going-forward basis. However, users occasionally make mistakes, so it’s helpful to also give them the option to restore the grid columns back to their initial defaults as illustrated by the following code snippet:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Ext.application({
    name: 'Fiddle',
 
    launch: function() {
        // tooltips are good!
        Ext.QuickTips.init();
 
        // turn on state management - store state in cookies
        Ext.state.Manager.setProvider(Ext.create('Ext.state.CookieProvider'));
 
        var store = Ext.create('Ext.data.Store', {
            fields: ['first', 'last'],
            data: [{
                first: 'Steve',
                last: 'Drucker'
            }, {
                first: 'Dave',
                last: 'Gallerizzo'
            }, {
                first: 'Jason',
                last: 'Perry'
            }]
        });
 
 
        Ext.widget('grid', {
 
            renderTo: Ext.getBody(),
            store: store,
            title: 'Names',
            stateful: true,          // turn on state management for the grid
            stateId: 'gridexample',  // give the grid instance a unique state id
            width: 300,
            height: 200,
            columns: [{
                text: 'First',
                dataIndex: 'first',
                flex: 1
            }, {
                text: 'Last',
                dataIndex: 'last',
                flex: 1
            }],
            tools: [{
                type: 'gear',
                tooltip: 'Reset Grid Layout',
                handler: function(event, toolEl, owner, tool) {
                    Ext.Msg.confirm('Reset Grid Layout', 'Are you sure that you want to reset the grid layout?',
 
                    function(response) {
                        if (response == 'yes') {
                            var grid = tool.up('grid');
 
                            // clear the state management for the grid
                            Ext.state.Manager.clear(grid.stateId);
                             
                            // repaint the grid using the hardcoded defaults
                            grid.reconfigure(grid.getStore(), grid.initialConfig.columns);
                        }
                    });
                }
            }
 
            ]
 
        });
 
    }
});

Comments

Post a Comment

Popular posts from this blog

ExtJS - Grid panel features

What can we do with ExtJS GridPanel? I have to develop a lot of applications in my web app and I see that grid component of ExtJS may fit in. However, I am not aware of what all things I can do with the - off the shelf available framework pieces - available plug-ins in the marketplace and - custom development through my own developers This is a typical question that we hear from the business users who wants to design an application by keeping the framework’s capability in perspective. In this article I have tried to put the list of stuff you can do with grid and hopefully that shall enable you to take advantage of the beauty of ExtJS. Pre-requisites This article assumes that you are familiar with basics of ExtJS What are the available options? In this section I will be taking you through some of the commonly seen usage of ExtJS grid panel. While covering all the capabilities of grid may not be possible, I am sure it will be helpful for the business users who want to...
8 comments
Read more

ExtJS 4 with Spring MVC Example

Introduction When developing a brand new application for the company I work for, one of the first thing I implement is "authentication". Not only is this process generally a prerequisite to access many other functions but it is also very simple and covers every layer of an application, from GUI to the database. So instead of another minimalistic "Hello World" tutorial, here is a "Login/Password" example, using 2 famous technologies : Spring MVC and ExtJS 4.   Prerequisites Because this tutorial is quite long, I won't go into the details of each technology I used but I will mainly focus on how ExtJS and Spring can be nicely used together. So here are the things you should know before continuing : Spring framework (good knowledge) Spring MVC (basic knowledge. See  Spring MVC Official Documentation  for details) ExtJS "application architecture" (see  Sencha Docs  for details) Eclipse IDE + Tomcat 6 (or any other web container) You a...
16 comments
Read more

Ext4 Apply Store Filtering

In extjs4.1: There are many way for store filtering . Some of code i give here Filtering by single field: store . filter ( 'eyeColor' , 'Brown' );   Alternatively, if filters are configured with an  id , then existing filters store may be  replaced by new filters having the same  id . Filtering by single field: store . filter ( "email" , /\.com$/ );   Using multiple filters: store . filter ([ { property : "email" , value : /\.com$/ }, { filterFn : function ( item ) { return item . get ( "age" ) > 10 ; }} ]);   Using  Ext.util.Filter  instances instead of config objects (note that we need to specify the root config option in this case): store . filter ([ Ext . create ( ' Ext.util.Filter ' , {   property : "email" , value : /\.com$/ , root : 'data' }),   Ext . create ( ' Ext.util.Filter ' , {   filterFn : function ( item ) {   return item . get ( ...
Post a Comment
Read more