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Notice the label-free square text field at the bottom left of the window you designed, as shown in Figure 13-9. Name this field chosen button. External scripts will use this field to work out which button the user clicked. When any button is clicked, the Studio application s internal script will take the title of that button and place it in that field, which will be hidden. Later, you can use the script to get the contents of the chosen button text field to know which button was clicked. To make this text field invisible so the user won t see it when the application is run, check the Hidden check box in the Attributes pane of the Inspector palette.

In IB, you can press Cmd+R (or choose File Test Interface) at any point to see how the interface will look and to try all the controls you put on it.

Now that you have created a page template, the next step is to build pages based on that page template. Typically, you would package the page template into a library to be shared among your development team and you will find out more about this when looking at declarative components later in the chapter but for the moment, as long as the page template is in your project, you will be able to use it. When you create a JSF page, one of the options is to create a page based on a template. Selecting this option will create the page and automatically apply, by reference, the chosen template. When viewing the page in the visual page editor, you will immediately notice that some areas of the page are grayed out while others are not. The areas that are not grayed out are the facet

One more thing you have to do to make the buttons perform is set them up so they ll send events to the application s internal script whenever the user clicks them. To configure a UI element to send events to a script, first select that UI element. Then go to the AppleScript pane of the Inspector palette, and check all the event handlers you want it to trigger, along with the script those handlers are in. In this case, you want each of the three buttons to send a clicked event to the main dialogs script, as shown in Figure 13-10.

Follow these steps: 1. Click the first button. 2. Choose AppleScript from the pop-up menu at the top of the Inspector palette. 3. In the Event Handlers outline list, expand the Action triangle, and check Clicked. 4. In the script pane, check dialogs.applescript. Notice that you didn t give the buttons names. In a full Studio application, you d normally name them, but since you re keeping it simple here, you ll just rely on their titles, like you do in the display dialog command. Repeat steps 1 through 4 for the other two buttons as well. In the AppleScript Studio application, all those buttons will invoke the same event handler in the script. To create that event handler in the script automatically, click one of the buttons to select it (any one), and click the Edit button (or Edit Script on 10.3) at the bottom of the AppleScript pane of the Inspector palette. Once you do, the script in the Xcode project will open, and a new, empty clicked event handler will be added, as shown in Figure 13-11.

Figure 13-11. The Xcode project window with the script, and the clicked event handler that has been added by IB

references that were created in the template. These are the areas on the page where content can be placed.

The clicked event handler will be invoked whenever the user clicks a UI element that is configured in IB to send that event. Since all the buttons in the panel you designed send clicked events to the same script, clicking any of them will invoke the same clicked event handler. The way you structure the application will allow you to treat all buttons with one simple script. All you want is to copy the title of the button that has been clicked to the text field named chosen

1. Henri Fayol, General and Industrial Management, New York: Pitman, 1949. English translation of book originally published in French in 1916.