Skip to main content

IAction and Widget mapping

This post explains how you can map a IAction as an model to a Button. In this case IAction will act as an model to your UI component Button by which you can control the behaviour of the button. In fact in the same way you can use IAction for MenuItem and ToolItem.

IAction belong to jface and button is and SWT component. Well  ActionContributionItem in the package org.eclipse.jface.action from the plugin org.eclipse.jface comes to rescue, the class provides API for the conversion.

Below are the step wise instructions needs to be followed to achieve it:

  1. Instantiate ActionContributionItem with IAction object
  2. Call the fill method on the ActionContributionItem object with appropriate parameter (in our case it should be instanceof Composite)
  3. That's all you are done now call a getWidget API to work on your SWT widget.

Benefits:

  1. Listeners are managed automatically so you need bother about them
  2. Look and feel is also been taken care of
Things to keep in mind:

  1. You need to set the layout data on the Widget 
  2. Icon and/or text should be set on the IAction as per your usability 
Labels:

Comments

Post a Comment

Popular posts from this blog

Interview at Progress Software

I have given a lot of interviews before however, this one was special. Let me start from the beginning. I got a call from Progress Software and was scheduled for the first telephonic discussion. Next day, I got a call from HR and she asked me questions on Java and a few basic puzzles.  After clearing the previous round, I got scheduled for the second telephonic interview. This interview covered Java, design-related problems and algorithms. After a week, I got a call from the HR for the onsite interviews in Hyderabad. This is the first time I googled about Progress Software. I said yes for the onsite interviews. Journey to onsite started not as planned after my flight got delayed. Because of fog-related delay in Delhi, I reached the PSI (Progress Software India) office couple of hours late.  HR introduced me to the first interviewer. The interviewer explained the first round. It was a coding round (I am not a big fan of coding rounds), the problem was ...
18 comments
Read more

java.net.SocketException: Connection reset

I am able to fix the problem via setting the following params on the HTTPClient class... client.getParams().setParameter("http.socket.timeout", new Integer(0)); client.getParams().setParameter("http.connection.stalecheck", new Boolean(true)); java.net.SocketException: Connection reset at java.net.SocketInputStream.read(Unknown Source) at java.io.BufferedInputStream.fill(Unknown Source) at java.io.BufferedInputStream.read(Unknown Source) at org.apache.commons.httpclient.HttpParser.readRawLine(HttpParser.java:77) at org.apache.commons.httpclient.HttpParser.readLine(HttpParser.java:105) at org.apache.commons.httpclient.HttpConnection.readLine(HttpConnection.java:1115) at org.apache.commons.httpclient.HttpMethodBase.readStatusLine(HttpMethodBase.java:1832) at org.apache.commons.httpclient.HttpMethodBase.readResponse(HttpMethodBase.java:1590) at org.apache.commons.httpclient.HttpMethodBase.execute(...
1 comment
Read more

CXF-RS: Java Code Generation from xml/xsd

Cleaner approach is to use xjc like this: Continue to dirty approach below if u need to: When working with CXF-RS services often we start with XML message that will be served. After that we go through endless iteration of generating the right Java POJO's for the XML. The library like apache XMLBeans generate the Java code but the code generated is not what a developer would write and generally tedious to modify and understand. I have come across a work around for generating Java classes from XSD (xml) which is very close to what a developer with decent experience will write.  Follow the steps given below to explore the solution: 1. Generate the wsdl from from xsd as given in at this link  ( http://cxf.apache.org/docs/xsd-to-wsdl.html ). 2. The Java classes can be generated from wsdl from maven plugin entry below find complete details here   http://cxf.apache.org/docs/maven-cxf-codegen-plugin-wsdl-to-java.html org.apache.cxf cxf-codegen-plugin ...
Post a Comment
Read more