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<title>Creating a PDE plug-in</title> | |
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<h1>Creating a plug-in</h1> | |
<p>Once your working environment is clean and configured, you can start creating | |
your first plug-in. </p> | |
<p>You start by creating a special plug-in project. PDE provides a wizard for | |
setting up the project. You can access this wizard using <b>File>New>Project...</b> | |
and | |
selecting <b>Plug-in Project</b> in the list of wizards under 'Plug-in | |
Development' category.</p> | |
<p>When you press <b>Next</b>, the first entry you will need to set is the project | |
name. It is a convention that plug-in project names are the same as plug-in IDs, | |
but they can be different. As an example, we will choose <b>"com.example.xyz"</b> | |
for the project name.</p> | |
<p>The next page shows the initial structure of the plug-in project. If | |
the project name conforms to the rules for plug-in names, you can keep the | |
default. Otherwise, you will be asked to change it (See <a href="../../org.eclipse.platform.doc.isv/guide/firstplugin_minimal.htm#firstplugin_minimal_pluginid">plug-in | |
ids</a> for a description of the format.). The <b>Plug-in | |
runtime library </b> name will be used to | |
define where the code of your new plug-in will be packaged once you are ready to | |
publish it. The <b>Source folder</b> will be created to store your Java source inside the | |
new project.</p> | |
<p>If you are creating a plug-in that is not meant to contain Java code, e.g. a | |
documentation plug-in, select the 'Create a simple project' option and press <b>Finish</b>. PDE will create a simple project containing a plug-in.xml file | |
with minimal content.</p> | |
<p align="center"> | |
<img border="0" src="images/project-structure.gif" alt="Plug-in Project Structure" width="500" height="500"></p> | |
<p>In the next page, you will need to choose what the content of your new plug-in | |
is going to look like. If you choose a blank plug-in, only the plug-in project | |
will be created. If you use the template wizards, the PDE will also create | |
files such as the plug-in class, build properties, and plug-in | |
manifest. Some of the templates provided by PDE also generate useful content | |
such as views, editors, property pages etc. This content is generated by | |
templates that can be combined into a wizard. All the available templates are | |
individually selectable in the "Custom plug-in wizard". </p> | |
<p>In this example, we use the "Hello, World" template wizard. You can | |
read about the wizard in the area to the right of the wizard list.</p> | |
<p align="center"> | |
<img border="0" src="images/project-codegen.gif" alt="Plug-in code generators" width="500" height="500"></p> | |
<p align="left">After the wizard has been selected, the following pages are | |
under wizard's control. Each template wizard contributes a number of pages that | |
customize the content about to be generated. However, all the templates share one | |
common page. It will collect information about the plug-in, such as its name, | |
version, and provider. It also provides options related to the plug-in | |
class that will be generated. In this example, we will accept all the | |
options.</p> | |
<p align="center"> | |
<img border="0" src="images/default-codegen.gif" alt="Mandatory plug-in content page" width="500" height="500"></p> | |
<p align="left"> </p> | |
<p align="left">After this page, templates add their own to collect | |
template-specific information. Our "Hello, World" template has only | |
one related to the action that will be contributed, as well as the message that | |
will be shown in a message box.</p> | |
<p align="center"> | |
<img border="0" src="images/hello-world-page.gif" alt=""Sample Action Set" template page" width="500" height="500"></p> | |
<p align="left"> </p> | |
<p align="left">When you press <b>Finish</b>, the wizard will create the new | |
project, all the specified folders and files, and the initial Java build path. | |
The build path is important for correct compilation of Java classes that are | |
generated. The wizard will also open the plug-in manifest editor so that you can | |
define additional attributes of your plug-in. </p> | |
<p align="left"> After the wizard is | |
finished, the initial project structure should look like this:</p> | |
<p align="center"> | |
<img border="0" src="images/initial-structure.gif" alt="Initial plug-in project structure" width="224" height="454"></p> | |
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<a href="../hglegal2003.htm"> | |
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