01 Creating an Extension

If you're working with the tutorial repo, open a Git Shell in the CoreEditor-HelloWorld-Example-as folder and run the following command:

git checkout -f step-1

• import the HelloWorldExtension ActionScript project from that folder into your editor workspace.
• Skim through the details below or skip straight to the Build & Run section.

Otherwise, follow the setup instructions below:

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Setup

• Create a new Actionscript project.

• Call it HelloWorldExtension and click 'Finish' to exit the wizard.

• Open the project's properties.

• On the left hand menu, select 'ActionScript Build Path'

• Change the 'Output folder' to: ${DOCUMENTS}\CoreEditor-as\deploy\extensions

1. On the right-hand pane, select the ‘Library Path’ tab.
2. Click Add Project
3. Select CoreApp, and click ok.
4. Click Add Project
5. Select CoreEditor, and click ok.

• On the left hand menu, select 'ActionScript Compiler'.

1. Turn off 'Copy non-embedded files to output folder'
2. Turn off 'Generate HTML wrapper file'.
3. Set the 'Additional compiler arguments' field to the following text. Discarding any existing values.

-keep-as3-metadata Serializable

• Close the project properties panel.

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• In the HelloWorldExtension.as file, add the following code to the constructor.

trace("Hello World");

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Build & Run

• Build the project. (CTRL+B);
• If not already present, add the following line to "CoreEditor/deploy/config.xml".

<extension url="extensions/HelloWorldExtension.swf" />

• Select the CoreEditor_AIR Project in the package explorer.
• Click Run->Debug->CoreEditor_AIR
• You should see "Hello World" traced out into Flash Builder as the application loads.

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