在 Eclipse 插件中保存操作的挂钩 [英] Hook to Save Action in Eclipse plugin

问题描述

我想为 Eclipse 创建一个 Google Closure Compiler 插件.我已经有一个弹出菜单项来将 JavaScript 文件编译为其缩小版本.但是，如果您每次保存 *.js 时都会自动生成缩小版本，那将非常有帮助.我读过/听说过性质和构建器、扩展点和 IResourceChangeListener.但我没有弄清楚我应该使用什么，尤其是如何让它发挥作用.

I want to create a Google Closure Compiler plugin for Eclipse. I already have a popup menu entry to compile a JavaScript file to its minified version. But it would be more than helpful if every time you save a *.js that minified version would be generated automatically. I read/heard about natures and builders, extension points and IResourceChangeListener. But I did not manage to figure out what I should use and especially how to get it to work.

是否有一个插件的工作示例可以执行相同类型的事情"，以便我可以使用它或教程来编写这样的东西?

Is there a working example of a plugin that does "the same kind of thing" so I can work from that or a tutorial to write such?

根据下面的答案，我搜索了使用 IResourceChangeListener 的项目并想出了以下代码:

With the answer below I searched for projects that use the IResourceChangeListener and came up with this code:

清单:http://codepaste.net/3yahwe

plugin.xml:http://codepaste.net/qek3rw

激活器:http://codepaste.net/s7xowm

DummyStartup:http://codepaste.net/rkub82

DummyStartup: http://codepaste.net/rkub82

MinifiedJavascriptUpdater:http://codepaste.net/koweuh

MinifiedJavascriptUpdater: http://codepaste.net/koweuh

在包含 IResourceChangeListener 代码的 MinifiedJavascriptUpdater.java 中，永远无法到达 resourceChanged() 函数.

There in the MinifiedJavascriptUpdater.java which holds the code for the IResourceChangeListener the resourceChanged() function is never reached.

推荐答案

从这里回答 http://www.eclipse.org/forums/index.php/t/362425/

解决方法是将代码放入激活器，去掉MinifiedJavascriptUpdater:

Solution is to get the code into the activator and get rid of the MinifiedJavascriptUpdater:

package closure_compiler_save;

import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends AbstractUIPlugin {

    // The plug-in ID
    public static final String PLUGIN_ID = "closure-compiler-save"; //$NON-NLS-1$

    // The shared instance
    private static Activator plugin;

    /**
     * The constructor
     */
    public Activator() {
    } //gets here

    @Override
    public void start(BundleContext context) throws Exception {
        super.start(context);
        Activator.plugin = this;

        ResourcesPlugin.getWorkspace().addResourceChangeListener(new IResourceChangeListener() {
            public void resourceChanged(IResourceChangeEvent event) {
                System.out.println("Something changed!");
            }
        });
    }

    @Override
    public void stop(BundleContext context) throws Exception {
        Activator.plugin = null;
        super.stop(context);
    }

    /**
     * Returns the shared instance
     *
     * @return the shared instance
     */
    public static Activator getDefault() {
        return plugin;
    }
}

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