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Disable the Back Button in browser

Reuirment-To Disable the Browser Back Button you need to use java script code in your jsp page.

For example, You have Page 1 and Page 2 .And you are navigation from page1 to page 2.now you click on browser bck button.
We need to disable this thing.We will be writing a javascript code into the page 1.We will use forward method.Let check what does it do-

forward()– method loads the next URL in the history list.This is the same as clicking the Forward button in the browser.JavaScript window history forward method provides the functionality to navigate the user to the next page visited by him. Actually history forward method works only if the user navigates to the previous page using back button of browser of history back method provided by JavaScript. This back history navigation enables the forward history navigation. JavaScript History object belongs to JavaScript window object that allows you to access the forward method using window.history.forward. You can also access the forward method directly as history.forward.

<script type ="text/javascript">
function stopGoingBack()
{
window.history.forward();
}
</script>

<html>
    <head>
    <title> Using the forward method of the History object</title>
    </head>
    <body>
    <form name=form1>
    Click on the button to go to the forward browser page.
    <input type="button" value="Go Forward" onload='stopGoingBack()'>
    </form>
    </body>
    </html>

Call this method on onload on the body of page.

Happy coding with techartifact with Vinay . 🙂

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Handling OK and Cancel button in af:dialog using popup in Oracle ADF by dialogListener

Requirement – We are displaying a popup message to user and on selecting on OK and CANCEl by user , writing custom code inside bean

Solution – You can have af:popup component in the page .Inside the popup , drag drop af:dialog component. You can call the pop up programmatic using my
another post of popup

For the dialog , you need to have some dialog listener. write it like 

<af:dialog title="handling Ok and cancel event}"
           type="okCancel"
           dialogListener="#{techartifact.headerManage.dialogListener1}"
           id="d1">

The method of dialogListener1 can be written as below.Write inside a headerManage bean.

public void dialogListener1(DialogEvent dialogEvent)
  {
    if (dialogEvent.getOutcome() == DialogEvent.Outcome.ok)
    {
     // write your custom code for ok event
    } else
    {
      // write your custom code for cancel event
   } 
  }

Happy coding with techartifact….

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Queue an action event or invoking the button action in programmatic way in JSF /ADF – Techartifact

Sometimes our requirement is to invoke the button’s action in programmatic way without needing a user to click a button,. For example we want navigation happening automatically without clicking the button by user i.e implementing navigation in programmatic way using Java.We can queue an action event . In this case the developer may drag and drop a button in the page and binds its action property to some static action outcome or to a method that returns a String, and set Visible property for the button to false. At some point the developer can invoke this button’s action by using this code.

 

FacesContext facesContext = FacesContext.getCurrentInstance();
UIViewRoot root = facesContext.getViewRoot();   
//cb1 is the fully qualified name of the button
RichCommandButton button = (RichCommandButton) root.findComponent(“cb1″); // cb1 will be id of invisible button
ActionEvent actionEvent = new ActionEvent(button);
actionEvent.queue();        // we are queuing the all action programmaticly

an another code snippet which will work in this scenario

 

        UIComponent component = null;
        FacesContext facesContext = FacesContext.getCurrentInstance();
        if (facesContext != null) {
          UIComponent root = facesContext.getViewRoot();
          component = findComponent(root, "button_id");  // button_id will be id of invisible button
        }
        
        RichCommandButton button = (RichCommandButton)component;
        ActionEvent actionEvent = new ActionEvent(button);
        actionEvent.queue();   // we are queuing the all action programmaticly