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POMake Cocoa application respond to simple AppleScript command
 

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    <p>I am trying to add a trivial AppleScript support to a Cocoa application. The application performs a check periodically and I just want to be able to tell it to perform it on demand.</p> <p>I am trying to follow the <a href="http://developer.apple.com/mac/library/samplecode/SimpleScriptingVerbs/" rel="nofollow">SimpleScriptingVerbs</a> Apple example.</p> <p>I have subclassed <code>NSScriptCommand</code> as follows:</p> <p>Header:</p> <pre><code>#import &lt;Cocoa/Cocoa.h&gt; @interface rdrNotifierUpdateCommand : NSScriptCommand { } -(id)performDefaultImplementation; @end </code></pre> <p>Implementation:</p> <pre><code>#import "rdrNotifierUpdateCommand.h" #import "rdrNotifierAppDelegate.h" @implementation rdrNotifierUpdateCommand -(id)performDefaultImplementation { NSLog(@"Works at last"); [((rdrNotifierAppDelegate *)[[NSApplication sharedApplication] delegate]) checkForNewItems]; // This just fires the timer return nil; } @end </code></pre> <p>My <code>.sdef</code> file goes as follows (and the problem seems to be there, but I cannot find it):</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE dictionary SYSTEM "file://localhost/System/Library/DTDs/sdef.dtd"&gt; &lt;dictionary title="Dictionary" xmlns:xi="http://www.w3.org/2003/XInclude"&gt; &lt;xi:include href="file:///System/Library/ScriptingDefinitions/CocoaStandard.sdef" xpointer="xpointer(/dictionary/suite)"/&gt; &lt;suite name="rdrNotifier Suite" code="rdrN" description="rdrNotifier application specific scripting facilities."&gt; &lt;command name="do update" code="rdrNUpdt" description="Check for new items"&gt; &lt;cocoa class="rdrNotifierUpdateCommand"/&gt; &lt;/command&gt; &lt;/suite&gt; &lt;/dictionary&gt; </code></pre> <p>The <code>Info.plist</code> is set up appropriately.</p> <p>But, when I try to run the following script in AppleScript editor:</p> <pre><code>tell application "rdrNotifier" do update end tell </code></pre> <p>I receive an error about variable "update" not being defined.</p> <p>I can open the dictionary for my application from AppleScript Editor (i.e. it is successfully registered).</p> <p><strong>Edit: Found a solution</strong></p> <p>The problem was indeed in the <code>sdef</code> file: I was not specifying that the application can reply to the command. My final definition goes as follows (Obj-C code unchanged):</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;!DOCTYPE dictionary SYSTEM "file://localhost/System/Library/DTDs/sdef.dtd"&gt; &lt;dictionary title="Dictionary" xmlns:xi="http://www.w3.org/2003/XInclude"&gt; &lt;!-- I have removed the standard suite as the application does not open, print... --&gt; &lt;suite name="rdrNotifier Suite" code="rdrN" description="rdrNotifier application specific scripting facilities."&gt; &lt;command name="do update" code="rdrNUpdt" description="Check for new items"&gt; &lt;cocoa class="rdrNotifierUpdateCommand"/&gt; &lt;/command&gt; &lt;class name="application" code="Capp"&gt; &lt;cocoa class="NSApplication"/&gt; &lt;responds-to name="do update"&gt; &lt;!-- Note you need to specify a method here, although it is blank --&gt; &lt;cocoa method=""/&gt; &lt;/responds-to&gt; &lt;/class&gt; &lt;/suite&gt; &lt;/dictionary&gt; </code></pre> <p>Any improvements/tips/criticisms are still welcome.</p>
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