我正在尝试开发一个插件,该插件在安排任何形式的日食工作时都会做一些工作。

基本上,我希望能够知道进度对话框中何时有作业并对其进行监视。

是否可以设置一个侦听器来捕获此类工作的乞讨和结束?

最佳答案

当您考虑时,ProgressView会这样做:每当作业启动时,它都会在其视图中显示它。
请注意,如该线程中所述,ProgressView is tightly coupled with the eclipse Jobs API(即,它可能不监视任何普通的香草线程)


(摘自文章On the Job: The Eclipse Jobs API

因此,可能您可以从org.eclipse.ui.internal.progress.ProgressView中的代码开始,该代码需要基于ProgressViewerContentProviderProgressContentProvider(实现IProgressUpdateCollector

一切似乎都基于ProgressViewUpdater单例,它创建了一个UI线程来监视那些Jobs:

    /**
     * Create the update job that handles the updatesInfo.
     */
    private void createUpdateJob() {
        updateJob = new WorkbenchJob(ProgressMessages.ProgressContentProvider_UpdateProgressJob) {
            /*
             * (non-Javadoc)
             *
             * @see org.eclipse.ui.progress.UIJob#runInUIThread(org.eclipse.core.runtime.IProgressMonitor)
             */
            public IStatus runInUIThread(IProgressMonitor monitor) {

                //Abort the job if there isn't anything
                if (collectors.length == 0) {
                    return Status.CANCEL_STATUS;
                }

                if (currentInfo.updateAll) {
                    synchronized (updateLock) {
                        currentInfo.reset();
                    }
                    for (int i = 0; i < collectors.length; i++) {
                        collectors[i].refresh();
                    }

                } else {
                    //Lock while getting local copies of the caches.
                    Object[] updateItems;
                    Object[] additionItems;
                    Object[] deletionItems;
                    synchronized (updateLock) {
                        currentInfo.processForUpdate();

                        updateItems = currentInfo.refreshes.toArray();
                        additionItems = currentInfo.additions.toArray();
                        deletionItems = currentInfo.deletions.toArray();

                        currentInfo.reset();
                    }

                    for (int v = 0; v < collectors.length; v++) {
                        IProgressUpdateCollector collector = collectors[v];

                        if (updateItems.length > 0) {
                            collector.refresh(updateItems);
                        }
                        if (additionItems.length > 0) {
                            collector.add(additionItems);
                        }
                        if (deletionItems.length > 0) {
                            collector.remove(deletionItems);
                        }
                    }
                }

                return Status.OK_STATUS;
            }
        };
        updateJob.setSystem(true);
        updateJob.setPriority(Job.DECORATE);
        updateJob.setProperty(ProgressManagerUtil.INFRASTRUCTURE_PROPERTY, new Object());

    }

09-25 18:04