Eclipse 插件开发 4 工具栏

[1 增加工具(push)](#1 增加工具(push))
[2 增加工具(toggle)](#2 增加工具(toggle))
[3 增加工具(radio)](#3 增加工具(radio))

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

style 值	含义	显示效果
push	普通按钮（默认）	普通的点击按钮，点一下执行一次
toggle	切换按钮	有按下/弹起两种状态，比如"开关"
radio	单选按钮	多个按钮互斥选择，比如 "模式切换"

1 增加工具(push)

java 复制代码

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 {

	@Override
	public 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 复制代码

在<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>

      <extension point="org.eclipse.ui.menus">
            <menuContribution locationURI="toolbar:org.eclipse.ui.main.toolbar">
                  <toolbar id="com.example.toolbar">
                        <command commandId="com.example.commands.helloCommand" icon="icons/sample.png" tooltip="点我执行命令" label="按钮名称" style="push">
                        </command>
                  </toolbar>
            </menuContribution>
      </extension>

      <extension point="org.eclipse.ui.handlers">
            <handler class="com.xu.learn.handlers.SampleHandler" commandId="com.example.commands.helloCommand">
            </handler>
      </extension>

</plugin>

2 增加工具(toggle)

java 复制代码

package com.xu.learn.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.Command;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.commands.ToggleState;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.handlers.HandlerUtil;

public class ToggleHandler extends AbstractHandler {

	private static final String STATS = "org.eclipse.ui.commands.toggleState";

	private static IPreferenceStore preferenceStore;

	public static void setPreferenceStore(IPreferenceStore store) {
		preferenceStore = store;
	}

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		Command command = event.getCommand();

		// 获取状态
		ToggleState state = (ToggleState) command.getState(STATS);
		if (state == null) {
			state = new ToggleState();
			command.addState(STATS, state);
		}

		// 打印状态
		boolean currentState = HandlerUtil.toggleCommandState(command);
		System.out.println("当前按钮状态：" + currentState);

		// 保存状态
		if (preferenceStore != null) {
			preferenceStore.setValue(STATS, currentState);
		}
		
		return null;
	}

}

xml 复制代码

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>

      <extension point="org.eclipse.ui.commands">
            <command id="com.example.commands.toggleCommand" name="切换按钮命令"/>
      </extension>

      <extension point="org.eclipse.ui.handlers">
            <handler class="com.xu.learn.handlers.ToggleHandler" commandId="com.example.commands.toggleCommand"/>
      </extension>

      <extension point="org.eclipse.ui.menus">
            <menuContribution locationURI="toolbar:org.eclipse.ui.main.toolbar">
                  <toolbar id="com.example.toolbar">
                        <command commandId="com.example.commands.toggleCommand" icon="icons/sample.png" style="toggle" tooltip="开关按钮示例"/>
                  </toolbar>
            </menuContribution>
      </extension>

</plugin>

3 增加工具(radio)

java 复制代码

package com.xu.learn.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;

public class RadioHandler extends AbstractHandler {

    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        // 拿到参数
        String option = event.getParameter("option");

        System.out.println("当前选中的Radio按钮是：选项 " + option);

        // 这里可以根据 option 做不同处理
        if ("1".equals(option)) {
            // 选中了第一个
        } else if ("2".equals(option)) {
            // 选中了第二个
        } else if ("3".equals(option)) {
            // 选中了第三个
        }

        return null;
    }
}

xml 复制代码

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>

      <extension point="org.eclipse.ui.commands">
            <command id="com.example.commands.radioCommand" name="单选按钮命令">
                  <commandParameter id="option" name="选项" optional="true"/>
            </command>
      </extension>

      <extension point="org.eclipse.ui.handlers">
            <handler class="com.xu.learn.handlers.RadioHandler" commandId="com.example.commands.radioCommand"/>
      </extension>

      <extension point="org.eclipse.ui.menus">
            <menuContribution locationURI="toolbar:org.eclipse.ui.main.toolbar">
                  <toolbar id="com.example.toolbar">
                        <command commandId="com.example.commands.radioCommand" icon="icons/sample.png" label="选项1" style="radio">
                              <parameter name="option" value="1"/>
                        </command>
                        <command commandId="com.example.commands.radioCommand" icon="icons/sample.png" label="选项2" style="radio">
                              <parameter name="option" value="2"/>
                        </command>
                        <command commandId="com.example.commands.radioCommand" icon="icons/sample.png" label="选项3" style="radio">
                              <parameter name="option" value="3"/>
                        </command>
                  </toolbar>
            </menuContribution>
      </extension>

</plugin>