tag:blogger.com,1999:blog-41760343714626672522025-05-26T02:31:31.642+02:00...make some good GWT examples and talk about them...Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.comBlogger52125tag:blogger.com,1999:blog-4176034371462667252.post-4934677458856352962015-04-07T12:04:00.001+02:002015-04-07T12:04:54.714+02:00

Dear readers, the migration of the code to GitHub has been finished, you can now access the code here: https://github.com/lpelov/gwt2go

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-20789977620631802452015-03-13T12:28:00.002+01:002015-03-13T12:29:02.450+01:00

Since Google is going to close the Google Project Hosting, and the blog posts here are still quite popular, I decide to move the GWT code examples to GitHub. I will let you know once the migration ready.

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-88391234175213931182012-12-06T12:57:00.001+01:002012-12-06T12:57:53.225+01:00

I just read the report about the future of GWT, really good job done by the GWT Steering Committee. You can get your free copy from the report here: https://vaadin.com/gwt/report-2012 I was actually surprised that there are not a lot of organizations using GWT for building portlets. I personally know several and I was involved to develop GWT Portlets few times as well. I suppose that most of this

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-89421592989293538012012-11-01T15:55:00.001+01:002012-11-01T16:00:15.288+01:00

Now I will go through the next step and show you how to create the Mongo DB entities. To read the FIRST PART click HERE, to see how to create the project using Spring Roo and STS. After you create the project you should see something like this: Using the keyword “hint” in the Roo Shell allows you to see what is the next step. This is really very easy step by step wizard way to work. In my case I

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com3tag:blogger.com,1999:blog-4176034371462667252.post-68388156878179527082012-10-31T11:37:00.001+01:002012-10-31T11:42:12.544+01:00

I started to work on private project where I used Spring Roo to create the GWT Project. The project also should use the Mongo DB. As IDE I use the Spring Tool Suite (STS). So here as usual my cookbook style tutorial. First of all you have to create Spring Roo Project. As I mention I used STS so everything is integrated inside. another possibility could be to create the project just directly using

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-15496432805263183032012-05-29T21:59:00.001+02:002012-05-29T21:59:25.850+02:00

This one is simple but could cause you some headaches when you try to test some components like DataGrid. Basically the DataGrid needs to be used inside some GWT Layout Panel like for example LayoutPanel or DockLayoutPanel and so on, which also requires the use of RootLayoutPanel. There are of course cases where you are not able to use the RootLayoutPanel but the RootPanel. You may wonder that

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-91047707568983213882012-04-07T21:38:00.001+02:002012-04-07T21:42:40.607+02:00

I just add some new examples, which I am going to describe in the next days, one of them is the native GWT drag and drop. Now this is the very basic one example which was introduced last year on the Google I/O conference. I will use this example to extend it later and show how to do drag and drop also on custom GWT widgets without to use third party libraries. You can find the source code as

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com3tag:blogger.com,1999:blog-4176034371462667252.post-51283482446240059032012-02-01T18:47:00.001+01:002012-02-01T18:50:53.318+01:00

This time something easy:). I was preparing new navigation using the GWT TreeView widget and as usual I wanted to share some of my experience with you. Basically everything works just by design, so here the three steps of creation. First step: you have to create your cell tree model. This is in my case just the class with the name of the node and his sub nodes. I call the class CellTreeDAOModel.

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com2tag:blogger.com,1999:blog-4176034371462667252.post-19222383401738719812011-11-04T10:39:00.001+01:002011-11-04T10:49:34.510+01:00

I wrote already similar article here, which describes very well how to use images into custom created cell. Also there is a very nice tutorial describing how to create custom cells you can read from the official GWT documentation here. I’ve been asked from a visitor the my blog about use case where we do have more then one images into the custom cell and then he wants to know which image was

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com6tag:blogger.com,1999:blog-4176034371462667252.post-70306777133330146622011-10-26T19:15:00.001+02:002011-11-03T10:42:07.137+01:00

I was playing around the possibility to extend AbstractSafeHtmlCell and create custom cell again, now with the GWT 2.4 and had a funny beginner problem. The issue was that I wanted to override the onBrowserEvent to handle click events. Everything was looking really good, but when I click on a cell into the custom column nothing happens. So I was hacking around to find out the problem without to

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-3157597363125401972011-08-26T08:00:00.000+02:002011-08-26T10:45:12.589+02:00

In GWT 2.1 the activities and places were introduced to allow you to use the browser history management. In the following versions this features where improved. I prepared this example already months ago but due to lack of time I was not able to post it until now. On the end of the article you will find a link with the source code! What is the use case? I have the following layout: This layout

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com7tag:blogger.com,1999:blog-4176034371462667252.post-29729087467772792492011-08-11T12:49:00.001+02:002011-08-11T12:52:02.010+02:00

I just post a article here about how to build GWT application using JDeveloper. This is just a start of set of topics I would like to post in the next weeks or months, so if you interested just take a look and let me know what you think. Also I plan to past some articles about building JSR-286 portlets using GWT as for the UI. So have a look and as usual I am always open for comments, questions

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com2tag:blogger.com,1999:blog-4176034371462667252.post-41184047369060537332011-08-08T15:48:00.001+02:002011-08-10T11:45:50.140+02:00

One of the commenters to the blog here bring me to the nice idea to use configuration properties to configure the linker instead of sub classing the linker. I found the idea very nice and decide to play around this feature. I did this example just to demonstrate what you can do to extend the linker, which I created in my previously articles to be able to use properties as well. First thing you

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-81593317713548827202011-07-28T09:02:00.001+02:002011-07-28T09:03:21.410+02:00

First thank you very much to all of you subscribed to this blog. I had some problems with the feeds and there were not working properly in the last 2 months, but know looks like the issue is fixed! There are two links now which you can use, the old one: http://feeds.feedburner.com/TheE20Blog and now there is a new one: http://feeds.feedburner.com/blogspot/gGRuP The old one link will still work

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-73890245051156128092011-07-27T07:28:00.000+02:002011-07-27T16:09:59.651+02:00

I was very surprised by the number of users visiting my last post regarding the GWT Linker which allows you to compile application manifest for offline support. There are also some issues reported, thank you very much about the feedbacks. Now I will try to keep it short, there is issue when you compile your application using the linker from my post HERE and then you run the application and open

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com4tag:blogger.com,1999:blog-4176034371462667252.post-40081267156128898722011-06-30T11:09:00.001+02:002011-06-30T18:07:07.961+02:00

NOTE: This article follows my previously post about linkers, which you can find HERE. It is really sad that there is not enough documentation about the GWT Linkers. It is a very powerful feature and gives you a lot of possibility, I do hope that in the next documentation this will change. As I tried to extend my linker, I found also some example into the GWT Code on the current trunk. I was very

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com4tag:blogger.com,1999:blog-4176034371462667252.post-2275018767162400452011-06-23T08:28:00.000+02:002011-06-23T16:35:11.755+02:00

In my previously article, I wrote about how to pass Apache Jackrabbit OCM and pass the nodes to the client side. It works really well, so I wanted to go for more extended example, for example using some collections or aggregation like shown in the OCM example page. Very briefly overview of what you should do to get all this to work: NOTE: Read this article to see how I set-up the project fist.

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-81997898130992607392011-06-03T07:22:00.000+02:002011-06-03T11:26:15.811+02:00

I was playing with Java Content Repository and Apache Jackrabbit and also some examples for Oracle UCM and JCR and since I work a lot with GWT in the last project I thought, why not using GWT with Jackrabbit OCM. There were not really examples in Internet about but several open source projects are using GWT and Apache Jackrabbit together. I wasn’t able to see pure implementation, something like

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-88437876258433849832011-05-17T17:00:00.001+02:002012-02-06T17:12:43.972+01:00

  NOTE: You can read part 2 of this article HERE and the issues fixes HERE!   I was looking after the latest GWT 2.3 and I wanted to experiment with the local storage HTML5 features. It looks good but what would be more interesting if you can make your GWT application to work offline. Looking in internet for some documentation I realized that to make my GWT runs offline I may need to

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com8tag:blogger.com,1999:blog-4176034371462667252.post-10157762856855822102011-05-15T17:30:00.001+02:002011-05-15T17:31:48.989+02:00

I suppose you also search in internet for new sites and tools you can use to support your work as web developer and make live easier or just to get faster to the point. In the last weeks I was looking for a tool which will allow me to fast sketch design, mockups and wireframes. I found very good one, which really works good for me. The name of the software is Balsamiq. It is very simple to work

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-71682034368297871022011-05-04T17:05:00.002+02:002011-05-16T17:08:38.315+02:00

I just update to the GWT 2.3 version and every time I compile my project I get this error message: 1 [WARN] Configuration property UiBinder.useSafeHtmlTemplates is false! UiBinder SafeHtml integration is off, leaving your users more vulnerable to cross-site scripting attacks. This property will default to true in future releases of GWT. I start to hate that message so I check in internet but

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com8tag:blogger.com,1999:blog-4176034371462667252.post-83822091499301883862011-04-07T20:54:00.001+02:002011-04-07T20:59:05.728+02:00

Ok, we know how the MenuBar and the MenuItems are working normally but what about if I want to use them into my UiBinder Template. First step will be to create the UiBinder Template with MenuBar and the MenuItems you which. After you finish this step you should assign the ui:field to your MenuItem (s). This will allow us to attach the commands. After you finish your UiBinder should look similar

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com4tag:blogger.com,1999:blog-4176034371462667252.post-62828655089080577852011-04-04T19:07:00.001+02:002011-04-04T19:07:59.748+02:00

I was playing with some GWT examples today and the Eclipse alert me that there is a new update of the GWT Plugin to version 2.2.1. What was interesting that there is also update for the GWT SDK, just a new build as you can see from the screenshots bellow. Before: After the update: The new plugin version fixes some issues like for example the work with the UiBinders highlighting, but I wasn’t

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-18452377303426737712011-04-01T18:33:00.000+02:002011-05-25T10:34:49.920+02:00

You know one of this issues, it is very simple but you don't have it on top of your head and you have to look into the documentation for how to do it. Even if it's well documented it takes time and you just want to have a code snipped and use it into your application. One of this issues for example is reading the folders and the content items (documents) from UCM, when I develop some custom

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com0tag:blogger.com,1999:blog-4176034371462667252.post-23568776711444559752011-04-01T18:28:00.000+02:002011-04-01T19:06:52.129+02:00

Most of the MVP GWT examples are made using SimplePanel. In case you want to create something more complicated using the GWT 2.x layout system the simple panel will not work and you will get problems developing an designing your layouts. In my case I wanted to use the DockLayoutPanel and as I mention I wasn’t able to work with it. The problem was very simple to solve, you have to take care of the

Lyudmil Pelovhttp://www.blogger.com/profile/11039623922638074747noreply@blogger.com8