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| <h2>Extensions page</h2> | |
| <p>Extensions are the | |
| central mechanism for contributing behavior to the platform. Unless your plug-in is a | |
| simple Java API library made available to other plug-ins, new behavior is contributed as an extension.</p> | |
| <p>The Extensions page is where you can add, remove and modify the extensions | |
| your plug-in contributes to the platform.</p> | |
| <p align="center"> | |
| <img src="images/actionSet-1.png" alt="Extensions editor page" border="0" ></p> | |
| <p> </p> | |
| <p>Each extension point comes with an xml schema specifying its grammar. | |
| Your extension's syntax must therefore follow that grammar in order to be | |
| processed correctly. When you create a new extension, PDE extracts the | |
| grammar for the corresponding extension point and populates the context menu of | |
| each element selected in the Extensions viewer with a list of valid child | |
| elements that you can create.</p> | |
| <p>Also, for each selected element in the body of an extension, PDE populates | |
| the Extension Element Details section with all the valid attributes for that | |
| element. Required attributes are denoted with an asterisk. </p> | |
| <p>When you hover your mouse over an attribute name, a tooltip box appears | |
| describing the purpose of that attribute.</p> | |
| <p>When an attribute expects the name of a Java class as a value, e.g. the <i> | |
| class</i> attribute above, clicking on the name of the attribute will open the | |
| Java file specified if it exists. If the file does not exist, then | |
| clicking on the <i>class</i> link will bring up the JDT New Class wizard to | |
| create a new Java class on the fly. PDE will prime the wizard with the | |
| correct superclass and/or interface when the schema for the extension point | |
| specifies this information for the given attribute.</p> | |
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