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CHAPTER 20 USING APPLESCRIPT AMENITIES IN MAC OS X
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Figure 20-6. UI Browser with the Target menu exposed In the first UI exercise, you will create a search script for Preview. You will first look at a simple script that enters a search string in the search field. Then, you will develop it further to catalog the search results it will pick right from the interface.
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Start by opening a text PDF file with Preview. Try looking through the developer documentation for one. Also, make sure the bookmarks drawer is open. Next, choose Preview from UI Browser s Target menu. If you already have, you may want to refresh your screen. I also expanded the Path to Element disclosure triangle to show the path to the currently selected element. Next, click the standard window element representing your PDF document in the second browser column, and continue clicking the objects listed in the subsequent browser columns. If you check the helpful Highlight check box, UI Browser will highlight the interface element with a yellow rectangle. After you select the window, click drawer 1 and then search text field 1. This is the search text field. You will use the keystroke command to type something in that field, but you first need to create an AppleScript tell block that identifies the text field. In UI scripting you don t tell applications what to do. Instead, everything you do happens under the System Events application. You tell different process objects of System Events what to do. Script 20-2 shows a typical tell block to start off a UI scripting script. Script 20-2. activate application "Preview.app" tell application "System Events" tell process "Preview" -- GUI Scripting statements: end tell end tell In UI Browser, choose Tell Block Wrapper (short) from the AppleScript menu. Then, copy and paste the result in a new script window in Script Editor.
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CHAPTER 20 USING APPLESCRIPT AMENITIES IN MAC OS X
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Targeting the UI Element
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After you clicked the last text field element, choose Set Value of Selected Element from the AppleScript pop-up menu. This will give you a line of code similar to the following: set value of text field 1 of drawer 1 of window "file name.pdf" to "<string>" Copy this line into your script, but since you will work more with this text field, let s separate it and give it its own tell block, like this: tell window "file name.pdf" set value of text field 1 of drawer 1 to "iPod" end tell Notice that I also switched the search string to a word I knew existed. Now, you need to click the Search button. In the UI, the Search button resides inside the text field and therefore will appear in UI Browser in the browser column to the right of the text field, as shown in Figure 20-7.
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Figure 20-7. UI Browser s main browser with the Search button element selected Script 20-3 shows the script so far, after you pasted the new click line into it and worked out the window s tell block.
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CHAPTER 20 USING APPLESCRIPT AMENITIES IN MAC OS X
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Script 20-3. activate application "Preview.app" tell application "System Events" tell process "Preview" tell text field 1 of drawer 1 of window 1 set value to "iPod" click button "search" end tell end tell end tell This script is supposed to find the occurrence of the word iPod in the front Preview document.
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Getting Fancy with Table Data
As in many other applications, Preview uses GUI tables to display data in rows and columns. The table you re interested in is the one containing the search results, which appears in the same drawer as the search field when one or more matches are found. Note that if there are no matches, you will end up with some unexpected tables. After digging a bit with UI Browser, you discover that the table object is as follows: table 1 of scroll area 1 of group 1 of drawer 1 of window 1 and that it has rows, and every row has two text fields. For example, if you just want a list of pages the matching text appears in, you can use the following line: value of text field 1 of every row of table 1 of scroll area 1 of group 1 of drawer 1 of window 1 The following is the entire script: activate application "Preview" tell application "System Events" tell process "Preview" value of text field 1 of every row of table 1 of scroll area 1 of group 1 of drawer 1 of window 1 end tell end tell --> {"1", "1", "1", "3", "5"}
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