systemtap/org.eclipse.linuxtools.systemtap.ui.editor/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>
    <extension
        point="org.eclipse.ui.commands">
        <command
            name="%command.open.name"
            description="%command.open.desc"
            categoryId="org.eclipse.linuxtools.systemtap.ui.editor.category.file"
            id="org.eclipse.linuxtools.systemtap.ui.editor.commands.file.OpenFileCommand"/>
        <category
            name="%category.file.name"
            description="%category.file.desc"
            id="org.eclipse.linuxtools.systemtap.ui.editor.category.file"/>
    </extension>

    <extension
        point="org.eclipse.ui.handlers">
        <handler
            class="org.eclipse.linuxtools.systemtap.ui.editor.handlers.file.OpenFileHandler"
            commandId="org.eclipse.linuxtools.systemtap.ui.editor.commands.file.OpenFileCommand">
            <activeWhen>
                <with
                    variable="activeWorkbenchWindow.activePerspective">
                    <equals value="org.eclipse.linuxtools.systemtap.ui.ide.IDEPerspective"/>
                </with>
            </activeWhen>
        </handler>
    </extension>

    <extension
        point="org.eclipse.ui.menus">
        <menuContribution locationURI="toolbar:org.eclipse.ui.workbench.file?before=save">
            <command
                commandId="org.eclipse.linuxtools.systemtap.ui.editor.commands.file.OpenFileCommand"
                icon="icons/actions/file/open_wiz.gif"
                label="%command.open.name">
                    <visibleWhen checkEnabled="true"/>
            </command>
        </menuContribution>
    </extension>

</plugin>