如何在eclipse插件中添加IResourceChangeListener？ [英] How to add IResourceChangeListener in eclipse plugin?

问题描述

我正在尝试使用以下教程在eclipse插件中添加IResourceChangeListener：

I am trying to add IResourceChangeListener in my eclipse plugin, using following tutorial:

https://eclipse.org/articles/Article-Resource-deltas/resource-deltas.html

但是，我从未在任何地方找到我应该在哪里添加这些侦听器代码的地方。我发现他们只是在创建一个新类，在其中添加了侦听器代码。如果我仅将其添加到任何Java类中，那么蚀将如何知道，事件发生时将触发哪个类？我试图按如下方式将代码放入activator.java中（我在其中添加了它，因为它维护了插件的生命周期）。

However, I never found anywhere, where should I add these listener code. I found that they are just creating a new class where they added the listener code. If I add it just in any java class, then how eclipse will know, which class to trigger when the events occur? I tried to put the code in activator.java as following (I added it there because it maintains the plugin life cycle).

我修改了开始和停止方法。

I modified the start and stop method.

package testPlugin;

import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jface.resource.ImageDescriptor;
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 = "testPlugin"; //$NON-NLS-1$

    /** the resource listener on URI changes */
    IWorkspace workspace = ResourcesPlugin.getWorkspace();
    IResourceChangeListener listener;

    // The shared instance
    private static Activator plugin;

    /**
     * The constructor
     * 
     */

    public Activator() {

    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext
     * )
     */
    public void start(BundleContext context) throws Exception {
        super.start(context);
        plugin = this;
        listener = new IResourceChangeListener() {
            public void resourceChanged(IResourceChangeEvent event) {
                System.out.println("Something changed!");
            }
        };

        workspace.addResourceChangeListener(listener);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext
     * )
     */
    public void stop(BundleContext context) throws Exception {
        if (workspace != null) {
            workspace.removeResourceChangeListener(listener);
        }
        plugin = null;
        super.stop(context);
    }

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

        return plugin;
    }

    /**
     * Returns an image descriptor for the image file at the given plug-in
     * relative path
     *
     * @param path
     *            the path
     * @return the image descriptor
     */
    public static ImageDescriptor getImageDescriptor(String path) {
        return imageDescriptorFromPlugin(PLUGIN_ID, path);
    }
}

但它不起作用。当我通过外部MKS签出更改当前的编辑器时，它无法打印东西已更改为consol，或者根本不起作用。

But its not working. When I change my current editor by external MKS check out, its not printing "Something has changed" to consol, or simply its not working.

我如何使其正常工作？我应该在哪里实际添加代码？我想在eclipse中修改工作编辑器（可以是默认的Java编辑器），而不用此侦听器创建任何新的编辑器。

How can I make it working? Where should I add the code actually? I want to modify the working editor (can be default java editor) in eclipse without creating any new editor with this listener.

非常感谢。

Thanks a lot in advance.

推荐答案

有两种方法可以做到这一点。

There are 2 ways to do this.

1. 自己编写类通过实现IResourceChangeListener来实现。


2. 使用以下代码

workspace.addResourceChangeListener（listener，IResourceChangeEvent.POST_CHANGE | IResourceChangeEvent.PRE_BUILD）;

这篇关于如何在eclipse插件中添加IResourceChangeListener？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！