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Custom alert window when clicking on menus [message #1831141]

Wed, 12 August 2020 06:06

Eclipse User

Hi, how can I make a custom alert window that triggers when you click a menu?

For example, if clicking the menu triggers some potentially unwanted and permanent changes to a database, I want to warn the user about this danger. So a popup window shows up with a custom message and halts the action till the user acknowledges the risks and confirms by clicking a "confirm" button on that popup.

thanks for your help, much appreciated

Re: Custom alert window when clicking on menus [message #1831142 is a reply to message #1831141]

Wed, 12 August 2020 06:31

Eclipse User

MessageBox and MessageBoxes.

For example look at the utility methods such as
MessageBoxes.showDeleteConfirmationMessage()

or create your own full featured message as for example

        int result=MessageBoxes.create()
                .withHeader("My Header")
                .withBody("My text")
                .withYesButtonText("Yes go ahead")
                .withNoButtonText("No, stop")
                .withCancelButtonText("Cancel, i mistyped")
                .withSeverity(IStatus.WARNING)
                .show();
        if(result== IMessageBox.YES_OPTION){
            //...
        }

Re: Custom alert window when clicking on menus [message #1831143 is a reply to message #1831141]

Wed, 12 August 2020 06:34

Eclipse User

Hi there

The MessageBox is what you are looking for.
MessageBox Demo
SourceCode of Demo (Widgets App)

You can create one using the MessageBoxes factory. Example:

int result = MessageBoxes
  .createYesNo()
  .withHeader("Delete entry?")
  .withBody("We will delete two entries")
  .withSeverity(IStatus.WARNING)
  .show();

The result returned will be one of the constants (IMessageBox: YES_OPTION, NO_OPTION, CANCEL_OPTION).

Note: For a simple deletion confirmation with YES and NO, the MessageBoxes factory offers convenience methods to build the message.

[Updated on: Wed, 12 August 2020 06:36] by Moderator

Re: Custom alert window when clicking on menus [message #1831144 is a reply to message #1831141]

Wed, 12 August 2020 06:37

Eclipse User

Hi,

have a look at the class org.eclipse.scout.rt.client.ui.messagebox.MessageBoxes. It has predefined popup message methods like showDeleteConfirmationMessage() or createYesNoCancel(). In your menus execAction() method you can use code like

if (MessageBoxes.showDeleteConfirmationMessage(myItems.toArray(new String[0]))) {
          for (IMyItem item : myItems) {
            myDelete(item);
          } 
     // potentially update what is shown

Re: Custom alert window when clicking on menus [message #1831156 is a reply to message #1831141]

Wed, 12 August 2020 10:13

Eclipse User

Thanks to everyone for your replies and hints. Also, thanks for linking that widget demo app, it is a useful resource for learning these basic things.

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