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| Running the plug-in |
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| Running the plug-in</H2> |
| <P > We have all the pieces needed to run our new plug-in. Now we need to build |
| the plug-in. If your Eclipse workbench is set up to build automatically, then |
| your new view class should have compiled as soon as you saved the new content. |
| If not, then select your new project and choose |
| |
| <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.perspectives.showPerspective(org.eclipse.ui.perspectives.showPerspective.perspectiveId=org.eclipse.ui.project.buildProject)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" alt="command link"> |
| <b>Project > Build Project</b></a>. |
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| The class should compile without error.</p> |
| <p>There are two ways to run a plug-in once it has been built.</p> |
| <ol> |
| <li>The plug-in's manifest files and jar file can be installed in the <strong>eclipse/plugins</strong> directory. When |
| the workbench is restarted, it will find the new plug-in.</li> |
| <li>The PDE tool can be used to run another workbench from within your current workbench. This |
| <strong>runtime workbench</strong> is handy for testing new plug-ins immediately as you develop them |
| from your workbench. (For more information about how a runtime workbench works, check the PDE guide.)</li> |
| </ol> |
| <p> |
| For simplicity, we'll run the new plug-in from within the Eclipse workbench. </p> |
| <h3>Launching the workbench</h3> |
| <p>To launch a runtime workbench, choose |
| |
| <a class="command-link" href='javascript:executeCommand("org.eclipse.debug.ui.commands.OpenRunConfigurations")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.png" alt="command link"> |
| <b>Run > Run...</b></a>. |
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| This dialog will show you all the different kinds of ways you can launch a program. |
| Choose <strong>Eclipse Application</strong>, click <strong>New</strong> and accept all of the default settings. |
| This will cause another instance of the Eclipse workbench, the runtime workbench, |
| to start. </p> |
| <h3>Running Hello World</h3> |
| <P > So where is our new view? We can see all of the views that have been contributed |
| by plug-ins using the <b>Window > Show View</b> menu.</P> |
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| <img src="images/perspectivemenu.png" alt="" border="0"> |
| <P > |
| This menu shows us what views are available for the current perspective. You can see all of the views that are contributed to the platform (regardless of perspective) by selecting |
| <b>Other...</b>. This will display a list of view categories and the views available under each category. </P> |
| <P > |
| The workbench creates the full list of views by using the extension registry to |
| find all the plug-ins that have provided extensions for the |
| <a href="../reference/extension-points/org_eclipse_ui_views.html"><b> org.eclipse.ui.views</b></a> extension point. </P> |
| |
| <img src="images/showview.png" alt="Show View dialog with Hello entry" border="0"> |
| <P > |
| There we are! The view called "Hello View" has been added to the <b> Show View</b> window underneath our category "Hello Category." The labels for our category and view were obtained from the extension point configuration markup in the |
| <b>plugin.xml</b>. </P> |
| <P ><i><b> |
| Up to this point, we still have not run our plug-in code! </b></i>The |
| declarations we made in the <b>plugin.xml</b> (which can be seen by other plug-ins using the extension registry) |
| are enough for the workbench to find out that there is a |
| view called "Hello View" available in the "Hello" category. It even knows what class |
| implements the view. But none of our code will be run until we decide to |
| show the view.</P> |
| <P > |
| If we choose the "Hello View" view from the <b> Show View</b> list, the |
| workbench will activate our plug-in, instantiate and initialize our view class, and show the |
| new view in the workbench along with all of the other views. Now our code is running. </P> |
| |
| <img src="images/workbenchwithhello.png" alt="Workbench with Hello World view" border="0"> |
| <P > |
| There it is, our first plug-in! We'll cover more specifics about UI classes and extension points later on.</P> |
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