1 files changed, 117 insertions, 0 deletions
diff --git a/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/provisional/tasklist/AbstractRepositoryClient.java b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/provisional/tasklist/AbstractRepositoryClient.java
new file mode 100644
index 000000000..e7e65401e
--- /dev/null
+++ b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/provisional/tasklist/AbstractRepositoryClient.java
@@ -0,0 +1,117 @@
+/*******************************************************************************
+ * Copyright (c) 2004 - 2006 University Of British Columbia and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     University Of British Columbia - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.mylar.provisional.tasklist;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.core.runtime.jobs.IJobChangeListener;
+import org.eclipse.core.runtime.jobs.Job;
+import org.eclipse.jface.wizard.IWizard;
+import org.eclipse.mylar.internal.tasklist.ui.wizards.AbstractRepositorySettingsPage;
+
+/**
+ * @author Mik Kersten
+ */
+public abstract class AbstractRepositoryClient {
+
+	private static final int MAX_REFRESH_JOBS = 5;
+	
+//	private TaskCategory archiveCategory = null;
+	
+	private List<AbstractRepositoryTask> toBeRefreshed = new LinkedList<AbstractRepositoryTask>();
+
+	private Map<AbstractRepositoryTask, Job> currentlyRefreshing = new HashMap<AbstractRepositoryTask, Job>();
+	
+	public void requestRefresh(AbstractRepositoryTask task) {
+		if (!currentlyRefreshing.containsKey(task) && !toBeRefreshed.contains(task)) {
+			toBeRefreshed.add(task);
+		}
+		updateRefreshState();
+	}
+
+	public void removeTaskToBeRefreshed(AbstractRepositoryTask task) {
+		toBeRefreshed.remove(task);
+		if (currentlyRefreshing.get(task) != null) {
+			currentlyRefreshing.get(task).cancel();
+			currentlyRefreshing.remove(task);
+		}
+		updateRefreshState();
+	}
+	
+	public void removeRefreshingTask(AbstractRepositoryTask task) {
+		if (currentlyRefreshing.containsKey(task)) {
+			currentlyRefreshing.remove(task);
+		}
+		updateRefreshState();
+	}
+	
+	public void clearAllRefreshes() {
+		toBeRefreshed.clear();
+		List<Job> l = new ArrayList<Job>();
+		l.addAll(currentlyRefreshing.values());
+		for (Job j : l) {
+			if (j != null)
+				j.cancel();
+		}
+		currentlyRefreshing.clear();
+	}
+
+	private void updateRefreshState() {
+		if (currentlyRefreshing.size() < MAX_REFRESH_JOBS && toBeRefreshed.size() > 0) {
+			AbstractRepositoryTask bugzillaTask = toBeRefreshed.remove(0);
+			Job refreshJob = synchronize(bugzillaTask, true, null);
+			if (refreshJob != null) {
+				currentlyRefreshing.put(bugzillaTask, refreshJob);
+			}
+		}
+	}
+	
+	public abstract String getLabel();
+
+	/**
+	 * @return the unique type of the repository, e.g. "bugzilla"
+	 */
+	public abstract String getKind();
+	
+	/**
+	 * @param id
+	 *            identifier, e.g. "123" bug Bugzilla bug 123
+	 * @return null if task could not be created
+	 */
+	public abstract ITask createTaskFromExistingId(TaskRepository repository, String id);
+
+	/**
+	 * Synchronize state with the repository (e.g. queries, task contents)
+	 */
+	public abstract void synchronize();
+	
+	/**
+	 * @param listener		can be null
+	 * @return TODO
+	 */
+	public abstract Job synchronize(ITask task, boolean forceUpdate, IJobChangeListener listener);
+
+	public abstract void synchronize(AbstractRepositoryQuery repositoryQuery);
+	
+	public abstract AbstractRepositorySettingsPage getSettingsPage();
+
+	public abstract IWizard getQueryWizard(TaskRepository repository);
+
+	public abstract void openEditQueryDialog(AbstractRepositoryQuery query);
+
+	public abstract IWizard getAddExistingTaskWizard(TaskRepository repository);
+
+}