Enabling or disabling JSF components

You can enable or disable JSF input fields and command buttons with EGL code. A disabled component can not be edited or changed on the Web page.

This task has the following prerequisites. For more information, see Accessing a JSF component from a pageHandler.
Follow these steps to enable or disable a JSF component from an EGL pageHandler:
  1. On a blank line inside a function in the pageHandler, press Ctrl+Shift+Z. The EGL Source Assistant window opens, displaying the JSF components on the page.
  2. In the EGL Source Assistant window, select the JSF component you want to access.
  3. Click OK.
    The EGL source assistant adds two lines of EGL code to the pageHandler. The first line defines an EGL variable of the type that matches the JSF component that you selected. The second line associates that variable with the JSF component. For example, the code to access a JSF input text component might look like this:
    text1 HtmlInputText;
    text1 = myViewRoot.findComponent("form1:text1");
  4. Using the EGL variable created by the source assistant, enable or disable the JSF component with the setDisabled function. For example, to enable a text field, add this code:
    text1.setDisabled(no);
    To disable the text field, add this code:
    text1.setDisabled(yes);

Related concepts
JSF component tree
viewRootVar property

Related tasks
Adding JSF component interface support to an EGL Web project
Accessing a JSF component from a pageHandler
Changing the style class of a JSF component
Changing the style of a JSF component
Changing the target of a JSF link
Setting the size of a JSF image
Setting event handlers for a JSF component
Setting JSF data table properties

Related reference
Component tree access parts

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