Eclipse 插件开发 3 菜单栏

位置	locationURI	备注
菜单栏	menu:org.eclipse.ui.main.menu	添加到传统菜单
工具栏	toolbar:org.eclipse.ui.main.toolbar	添加到工具栏

1 增加菜单

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin><extension point="org.eclipse.ui.menus"><menuContribution locationURI="menu:org.eclipse.ui.main.menu?after=additions"><menu id="com.xu.learn.menus.sampleMenu" label="一级菜单"><command commandId="com.xu.learn.commands.sampleCommand" id="com.xu.learn.menus.sampleCommand"></command></menu></menuContribution></extension></plugin>

2 指定位置

XML	字段	含义
extension.menuContribution	locationURI	菜单栏位置 menu:org.eclipse.ui.main.menu?after=additions，如Window就是window

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin><extension point="org.eclipse.ui.menus"><menuContribution locationURI="menu:org.eclipse.ui.main.menu?after=window"><menu id="com.xu.learn.menus.sampleMenu" label="一级菜单"><command commandId="com.xu.learn.commands.sampleCommand" id="com.xu.learn.menus.sampleCommand"></command></menu></menuContribution></extension></plugin>

3 点击事件

XML	字段	含义
extension.handler	commandId	处理id
menu.command	commandId	处理id
menu.command	class	为处理类的路径

package com.xu.learn.handlers;import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.jface.dialogs.MessageDialog;public class SampleHandler extends AbstractHandler {@Overridepublic Object execute(ExecutionEvent event) throws ExecutionException {IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event);MessageDialog.openInformation(window.getShell(),"Learn","点击菜单弹框");return null;}
}

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin><extension point="org.eclipse.ui.menus"><menuContribution locationURI="menu:org.eclipse.ui.main.menu?after=additions"><menu id="com.xu.learn.menus.sampleMenu" label="一级菜单"><command commandId="com.xu.learn.commands.sampleCommand" id="com.xu.learn.menus.sampleCommand"></command></menu></menuContribution></extension><extension point="org.eclipse.ui.handlers"><handler class="com.xu.learn.handlers.SampleHandler" commandId="com.xu.learn.commands.sampleCommand"></handler></extension></plugin>

4 二级菜单 (静态)

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin><!-- 添加顶部菜单 --><extension point="org.eclipse.ui.menus"><menuContribution locationURI="menu:org.eclipse.ui.main.menu"><!-- 添加顶部 一级菜单 --><menu id="com.xu.test.menus.menu1" label="菜单1"><!-- 一级菜单 下增加 二级菜单1 --><command commandId="com.xu.test.commands.submenu1Command" icon="icons/sample.png" id="com.xu.test.menus.submenu1" label="二级菜单1"></command><!-- 一级菜单 下增加 二级菜单2 --><command commandId="com.xu.test.commands.submenu2Command" icon="icons/sample.png" id="com.xu.test.menus.submenu2" label="二级菜单2"></command><!-- 一级菜单 下增加 二级菜单3 --><command commandId="com.xu.test.commands.submenu3Command" icon="icons/sample.png" id="com.xu.test.menus.submenu3" label="二级菜单3"></command><!-- 一级菜单 下增加 二级菜单3 --><menu id="com.xu.test.menus.submenu4" label="二级菜单4"><!-- 二级级菜单 下增加 三级菜单1 --><command commandId="com.xu.test.commands.submenu4_1Command" id="com.xu.test.menus.submenu4_1" label="三级菜单1"></command></menu></menu></menuContribution></extension><!-- 菜单点击命令 --><extension point="org.eclipse.ui.commands"><!-- 二级菜单1 命令 --><command defaultHandler="com.xu.handlers.HelloHandler" id="com.xu.test.commands.submenu1Command" name="二级菜单1命令"></command><!-- 二级菜单2 命令 --><command defaultHandler="com.xu.handlers.SampleHandler" id="com.xu.test.commands.submenu2Command" name="二级菜单2命令"></command><!-- 二级菜单3 命令 --><command defaultHandler="com.xu.handlers.HelloHandler" id="com.xu.test.commands.submen3Command" name="二级菜单3命令"></command><!-- 三级菜单1 命令 --><command defaultHandler="com.xu.handlers.HelloHandler" id="com.xu.test.commands.submenu4_1Command" name="三级菜单1命令"></command></extension></plugin>

5 二级菜单 (动态)

方式	场景	实现
继承 CompoundContributionItem + dynamic	动态生成菜单项	推荐
反复修改 plugin.xml	麻烦、不灵活	plugin.xml 是静态配置

package com.xu.dynamic;import java.util.ArrayList;
import java.util.List;import org.eclipse.jface.action.ContributionItem;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.actions.CompoundContributionItem;public class DynamicSubMenu extends CompoundContributionItem {@Overrideprotected IContributionItem[] getContributionItems() {List<IContributionItem> items = new ArrayList<>();// 示例：根据某些条件动态生成7个子项for (int i = 1; i <= 7; i++) {final int index = i;items.add(new ContributionItem() {@Overridepublic void fill(Menu menu, int indexInMenu) {MenuItem menuItem = new MenuItem(menu, org.eclipse.swt.SWT.PUSH, indexInMenu);menuItem.setText("动态菜单项 " + index);menuItem.addListener(org.eclipse.swt.SWT.Selection, e -> {System.out.println("你点击了：动态菜单项 " + index);// 你可以在这里调用命令或其他逻辑});}});}return items.toArray(new IContributionItem[0]);}
}

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin><!-- 添加顶部菜单 --><extension point="org.eclipse.ui.menus"><menuContribution locationURI="menu:org.eclipse.ui.main.menu"><!-- 添加顶部 一级菜单 --><menu id="com.xu.test.menus.menu1" label="菜单1"><!-- 一级菜单 下增加 二级菜单1 --><command commandId="com.xu.test.commands.submenu1Command" icon="icons/sample.png" id="com.xu.test.menus.submenu1" label="二级菜单1"></command><!-- 一级菜单 下增加 二级菜单2 --><command commandId="com.xu.test.commands.submenu2Command" icon="icons/sample.png" id="com.xu.test.menus.submenu2" label="二级菜单2"></command><!-- 一级菜单 下增加 二级菜单3 --><command commandId="com.xu.test.commands.submenu3Command" icon="icons/sample.png" id="com.xu.test.menus.submenu3" label="二级菜单3"></command><!-- 一级菜单 下增加 二级菜单3 --><menu id="com.xu.test.menus.submenu4" label="二级菜单4"><!-- 动态生成三级菜单 --><dynamic class="com.xu.dynamic.DynamicSubMenu" id="com.xu.test.menus.dynamicSubmenu"/></menu></menu></menuContribution></extension><!-- 菜单点击命令 --><extension point="org.eclipse.ui.commands"><!-- 二级菜单1 命令 --><command defaultHandler="com.xu.view.handlers.HelloHandler" id="com.xu.test.commands.submenu1Command" name="二级菜单1命令"></command><!-- 二级菜单2 命令 --><command defaultHandler="com.xu.view.handlers.SampleHandler" id="com.xu.test.commands.submenu2Command" name="二级菜单2命令"></command><!-- 二级菜单3 命令 --><command defaultHandler="com.xu.view.handlers.HelloHandler" id="com.xu.test.commands.submen3Command" name="二级菜单3命令"></command><!-- 三级菜单1 命令 --><command defaultHandler="com.xu.view.handlers.HelloHandler" id="com.xu.test.commands.submenu4_1Command" name="三级菜单1命令"></command></extension></plugin>