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Using list boxes in a Flash movie A list box is a scrollable list of selectable items. To use list boxes in your Flash movie, follow these steps: 1. Choose Window.Components to view the Components panel if it s not already open. 2. Drag a list box from the Components panel onto the Stage. 3. Choose Window.Properties.Properties to open the Property inspector if it isn t already open. If necessary, click the collapse arrow on the Property inspector title bar to expand it and click the Parameters tab. The Property inspector appears with the Parameters tab on top. The Property inspector lists four parameters: Data, Labels, Multiple Selection, and Row Height. 4. Type a name in the Instance Name text field in the left corner of the Property inspector. For example, you might name the instance myListBox. 5. To create items in the list box, click the magnifying glass next to the Labels text field on the Parameters tab of the Property inspector. The Values dialog box appears. 6. In the Values dialog box, click the plus sign to add a list item or click the minus sign to delete a list item. Click the upward-pointing triangle to move an item up on the list and click the downward-pointing triangle to move an item down on the list. When you add an item to the list, it is cleverly named defaultValue. 7. To change a list item s name from defaultValue to something more useful, click the menu item in the Values dialog box and type a more descriptive name there. 8. Click OK. The Values dialog box closes. 9. To set whether the user can select multiple items on the list, select True or False from the drop-down list for the Multiple Selection parameter. Selecting True allows the user to select multiple items on the list. Selecting False allows the user to select only one item on the list. 10. To change the height (in pixels) of each item in the list, click the Row Height field on the Property inspector and type a new number. The default height is 20 pixels. Chapter 12: Putting It All Together 265
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12. Decide which elements of your Flash movie will change when a menu item in the combo box is selected. Add those elements to the Flash movie if you haven t already done so. If, for example, you decide that the contents of a dynamic text box will change when a menu item in the combo box is selected, create a dynamic text box on the Stage and give it an instance name, such as myInfo3. (See Chapter 5 to discover how to create dynamic text.) 13. Choose Window.Actions to open the Actions panel if it isn t open already, and in the Actions panel click the Script Assist button to deselect it, if it s selected. 14. Select Frame 1 in the Timeline and enter the following code in the Script pane of the Actions panel: myEvent3 = new Object(); myForm3 = new Object(); myForm3.change = function(myEvent3){ myInfo3.text = myComboBox.selectedItem.label; } myComboBox.addEventListener( change ,myForm3); You can replace myForm3, myEvent3, myInfo3, and myComboBox with any names that you like. myInfo3 in this example is the name of the dynamic text field that we mention in Step 12, and myComboBox is the instance name of your combo box. When you play your Flash movie, note the sleek, subtle animation when you click the combo box, which is impossible with a plain old HTML Web page. Lines 1 and 2 of the preceding code create new little bundles of methods and properties named myEvent3 and myForm3. Line 6 adds an event listener to myForm3 so that when you select one of the menu items in myComboBox, the code in lines 3, 4, and 5 sets the text of the dynamic text field to whatever is the label of the combo box menu item that the viewer selects. The third, fourth, and fifth lines of code show an example of how to change the contents of the dynamic text box that we describe in Step 12, but you can replace this line with other ActionScript code to do something else. For example, here you might instead put some ActionScript code that sets the Flash playhead to move to different sections of the movie depending on which menu item in the combo box is selected. If things aren t working when you test your combo box, there may be typos or other errors in the ActionScript code that you typed in. Flash often reports these errors in the Output panel when you choose Control.Test Movie. The error messages in the Output window may seem obscure, but they can give you an idea of where your problem may be. 264 Part V: The Movie and the Web
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1. Choose Window.Components to view the Components panel if it isn t already open. Refer to Figure 12-1 to see the Components panel in all its splendor. 2. Drag a combo box from the Components panel onto the Stage. 3. Choose Window.Properties.Properties to open the Property inspector if it isn t already open. If necessary, click the collapse arrow on the Property inspector title bar to expand it and click the Parameters tab. The Property inspector appears with the Parameters tab on top. The Property inspector lists four parameters: Data, Editable, Labels, and Row Count. 4. Type a name in the Instance Name text field in the upper-left corner of the Property inspector. 5. To control whether the user can edit the items on the combo box s menu list, select True or False from the drop-down list for the Editable parameter. Selecting True allows the user to rename each item on the menu list. Selecting False prevents that from happening. 6. To create items on the menu list, click the magnifying glass next to the Labels text field in the Parameters tab of the Property inspector. The Values dialog box appears. 7. In the Values dialog box, click the plus sign to add a menu item or click the minus sign to delete a menu item. Click the upward-pointing triangle to move an item up on the list and click the downward-pointing triangle to move a menu item down on the list. When you add an item to the list, it is excitingly named defaultValue. 8. To change a menu item s name from defaultValue to something more interesting and meaningful, click the menu item in the Values dialog box and type a more useful name there. 9. Click OK. The Values dialog box closes. 10. To change the number of items that can be displayed in the combo box without a scroll bar, click the Row Count field on the Property inspector and type a new number. The default number is 5. 11. If you want to make the combo box wider so that longer menu items are more readable, choose Modify.Transform.Scale and change the size of the combo box by pulling the handles that appear on its borders. Chapter 12: Putting It All Together 263
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10. Select Frame 1 in the Timeline and enter the following code in the Script pane of the Actions panel: myEvent2 = new Object(); myForm2 = new Object(); myForm2.click = function(myEvent2){ if (myEvent2.target.selected){ gotoAndPlay(20); } } myCheckBox.addEventListener( click ,myForm2); stop(); You can replace myForm2, myEvent2, and myCheckBox with any names that you like. myCheckBox in this example is the instance name of your check box. You might not need the stop() action in the last line of the code, depending on what you want your movie to do. We assume in this example that you want the movie to wait in Frame 1 for the user to press a button or mark the check box, so for that you would want to stop the action in Frame 1. Lines 1 and 2 of the preceding code create new little bundles of methods and properties named myEvent2 and myForm2. Line 8 adds an event listener to myForm so that when you mark the check box named myCheckBox, the code in Lines 3, 4, 5, 6 and 7 causes Flash to go to Frame 20 and start playing there. An event listener is a little bit of software that checks for events generated by one object and notifies a second object when they occur. So the code in Line 8 sets up an event listener that notifies a function named myForm2 whenever myCheckbox has been clicked. In the code in Lines 3, 4, and 5, whenever myForm2 receives a message that myCheckbox has been clicked, myForm2 checks to see if myCheckbox was selected or deselected, and if myCheckbox was selected, then Flash goes to frame 20 and starts playing there. Lines 4 and 5 of the code show an example of how to set the Flash playhead to move to another section of the movie if the viewer selects the check box. You can replace this line with other ActionScript code to make the movie do something else when the viewer selects the check box. Using combo boxes in a Flash movie A combo box is text box that shows the current selection, combined with a drop-down list of possible selections. To use combo boxes in your Flash movie, follow these steps: 262 Part V: The Movie and the Web
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Using check boxes in a Flash movie Check boxes are square boxes that you can check or uncheck to indicate that an option is selected or deselected. To use check boxes in your Flash movie, follow these steps: 1. Choose Window.Components to view the Components panel if it isn t already open. 2. Drag a check box from the Components panel onto the Stage. 3. Choose Window.Properties.Properties to open the Property inspector if it isn t already open. If necessary, click the collapse arrow on the Property inspector title bar to expand it, and click the Parameters tab. The Property inspector appears with the Parameters tab on top. The Property inspector lists three parameters: Label, Label Placement, and Selected. 4. To change the check box s label, click the Label field on the Parameters tab of the Property inspector, type a new name for the check box, and press Enter (Windows) or Return (Mac). The check box s label changes on the Stage. 5. To change the check box s initial state, click the Selected drop-down list on the Property inspector and select True or False. If you choose True, the check box is initially marked. If you choose False, the check box is initially cleared. 6. To change the check box s label placement, click the Label Placement drop-down list on the Property inspector and select Right, Left, Top, or Bottom. 7. To give the check box an instance name, type a name in the Instance Name field on the Property inspector. For instance, you can enter myCheckBox. 8. Decide which elements of your Flash movie will change when a check box is selected; then add those elements to the Flash movie if you haven t already done so. For example, if you decide the movie will go to and play Frame 20 when a check box is marked, create a keyframe at Frame 20. (See Chapter 9 to discover how to create keyframes.) 9. Choose Window.Actions to open the Actions panel if it isn t open already, and in the Actions panel click the Script Assist button to deselect it (if it s selected). Chapter 12: Putting It All Together 261
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14. Select Frame 1 in the Timeline and enter the following code in the Script pane of the Actions panel: myEvent = new Object(); myForm = new Object(); myForm.click = function(myEvent){ myInfo.text = myEvent.target.selection.data; } myRadioGroup.addEventListener( click ,myForm); You can replace myForm, myEvent, myInfo, and myRadioGroup with any names that you like. myInfo in this example is the name of the dynamic text field that we mention in Step 12, and myRadioGroup is the group name of your radio buttons. Lines 1 and 2 of the preceding code create new little bundles of methods and properties named myEvent and myForm. Line 6 adds an event listener to myForm so that when you select one of the radio buttons in myRadioGroup, the code in Lines 3, 4, and 5 sets the text of the dynamic text field to whatever is in the data parameter of the radio button that you click. The second line of code shows an example of how to change the contents of the dynamic text box that we describe in Step 11, but you can replace this line with other ActionScript code to do something else in your movie to respond to changes in which radio button is selected. For example, if you want to set the text of the dynamic text field to be the label of the radio button that you click, replace this line: myInfo.text = myEvent.target.selection.data; with this line: myInfo.text = myEvent.target.selection.label; For radio buttons, the Property inspector has two tabs in the upper-right corner one tab for properties and one tab for parameters. If you have a radio button selected but its parameters don t show on the Property inspector, you probably clicked the Properties tab by accident. Click to select the Parameters tab in the upper-right corner of the Property inspector; now it should display the radio button parameters. When you look at the preceding code, on some deep level you may be thinking, Huh? But it s possible to do a lot of coding in Flash without getting a PhD in ActionScriptology first. You can accomplish a lot by copying existing code, playing with it, and observing the effect. 260 Part V: The Movie and the Web
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The Property inspector appears with the Parameters tab on top. The Property inspector lists five parameters. 5. Select the radio button whose parameters you want to set. 6. To change the radio button s label, click in the label field on the Property inspector, type a new name for the radio button, and press Enter (Windows) or Return (Mac). The radio button s label changes on the Stage. 7. To change the radio button s initial state, click the Selected drop-down list on the Property inspector and select True or False, depending on what you want. If you select True, the radio button is initially selected. If you select False, the radio button is initially clear. 8. To change the group to which the radio button belongs, type a new name in the Group Name text field on the Property inspector. For example, type myRadioGroup into the Group Name text field. All the radio buttons with the same group name act as one group. Selecting one radio button in the group deselects all the other radio buttons with the same group name. 9. To change the radio button s label placement, click the Label Placement drop-down list on the Property inspector and select the right, left, top, or bottom option to place the label to the right, left, top, or bottom of its radio button. If you choose top or bottom, you undoubtedly want to type in a larger value in the Height text box in the Property inspector to increase the height of the radio button box. 10. To associate additional information with the radio button, enter the information in the Data text field on the Property inspector. Step 13 shows you how to use this data. 11. Repeat Steps 5 to 10 for each radio button. 12. Decide which elements of your Flash movie will change when a radio button is selected; then add those elements to the Flash movie if you haven t already done so. If for example, you decide that the contents of a dynamic text box will change when a radio button is selected, create a dynamic text box on the Stage and give it an instance name, such as myInfo. (See Chapter 5 to discover how to create dynamic text.) 13. Choose Window.Actions to open the Actions panel if it isn t open already, and in the Actions panel click the Script Assist button to deselect it (if it s selected). Chapter 12: Putting It All Together 259
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Using radio buttons in a Flash movie Radio buttons are groups of buttons that permit you to choose one item from the group, like the buttons on a car radio. To use a set of radio buttons in your Flash movie, follow these steps: 1. If the Components panel is not already visible, choose Window.Components. If necessary, click the collapse arrow on the Components panel title bar to expand it. 2. If necessary, click the plus sign (Windows) or the right-pointing arrow (Mac) to the left of the User Interface category in the Components panel to display all the components in the category. 3. Drag two or more radio buttons from the Components panel onto the Stage. You need at least two radio buttons in every set of radio buttons because one must always be on. In a Flash movie, when you enable a radio button in a set, that button is turned on, and all the others in the set are turned off. 4. Choose Window.Properties.Properties to open the Property inspector if it s not already open. If necessary, click the collapse arrow on the Property inspector title bar to expand it and click the Parameters tab. Figure 12-1: The Components panel contains pre-built user interface elements that you can use in your Flash movies. 258 Part V: The Movie and the Web
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Flash saves an .swf file and an HTML file, both of which contain code supporting named anchors. At this writing, named anchors don t work properly in all Web browsers, unless you add a bunch of complex code to your Web pages to patch things up. Adding the Power of Components Components in Flash are built-in, pre-coded wonders that simplify the creation of interactive Flash movies. Components can be used to add interaction and navigation elements to your Flash movies, allowing you to use Flash to create surveys, forms, interactive art galleries, or even complete graphical user interfaces for your Flash movies. Among other things, you can also use components (with the help of some fairly sophisticated ActionScript) to access and manipulate data from the Web and other sources. Flash 8 ships with more than a dozen components, and you can download more components built by Flash community members by choosing Help. Flash Exchange. Some of the components that ship with Flash 8 are Radio buttons: These let you make one choice from several buttons. Check boxes: You can mark or clear each check box. Push buttons: Clicking one of these makes something happen in your movie. Combo boxes: These are drop-down lists. List boxes: These are scrolling lists of choices. Scroll panes: These are scrollable (but not draggable) windows for your movie clips, JPEG images, and Flash Player files. Windows: These are draggable windows within your Flash movie that can display a movie clip, JPEG image, or Flash Player file. They also include a title bar, a border, and a Close button. To add a component to your Flash movie, drag it from the Components panel (see Figure 12-1) onto the Stage. In the following sections, we look at how you use several types of components. We skip push buttons because button symbols (which we describe in Chapter are easier to use and do almost everything that you need. Chapter 12: Putting It All Together 257
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browser moves to the named anchor point in that scene. Clicking the Forward button undoes the results of pressing the Back button. Named anchors work only when you save your work as Flash Player 6, 7, or 8 movies and when they re viewed with Flash Player 6 or above. To use named anchors in your movie, follow these steps: 1. Create a new Flash document by choosing File.New and then choosing Flash document in the General tab of the New Document dialog box that appears. Or use an existing document that you want to add named anchors to. 2. Choose Window.Properties.Properties to open the Property inspector if it s not already open. If necessary, click the collapse arrow on the Property inspector title bar to expand it. 3. Click the keyframe where you want to add a named anchor. 4. In the upper-left corner of the Property inspector, type a name in the Frame Label text box. 5. Choose Anchor in the Type pop-up menu near the Frame Label text box. An anchor icon appears in the keyframe that you clicked in Step 3. To publish your Flash movie with named anchors, follow these steps: 1. Add named anchors to your Flash document as described in the preceding step list. 2. Choose File.Publish Settings. The Publish Settings dialog box appears. 3. In the Formats tab of the Publish Settings dialog box, select the Flash check box and the HTML check box. 4. Choose the Flash tab of the Publish Settings dialog box and adjust the settings as desired. See Chapter 13 for information on all the settings in the Flash tab. 5. Choose the HTML tab of the Publish Settings dialog box, and in the HTML tab, choose Flash with Named Anchors in the Template dropdown list. For details on other settings, see the section in Chapter 13 on specifying HTML settings in the Publish Settings dialog box. 6. Click Publish. 256 Part V: The Movie and the Web
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