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/*******************************************************************************
* Copyright (c) 2004, 2009 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
* Eugene Kuleshov - improvements
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui;
import java.util.Arrays;
import java.util.Collection;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import org.eclipse.jface.fieldassist.IContentProposal;
import org.eclipse.jface.fieldassist.IContentProposalProvider;
import org.eclipse.mylyn.commons.net.AuthenticationCredentials;
import org.eclipse.mylyn.commons.net.AuthenticationType;
import org.eclipse.mylyn.internal.tasks.core.AbstractTask;
import org.eclipse.mylyn.tasks.core.ITask;
import org.eclipse.mylyn.tasks.core.TaskRepository;
import org.eclipse.mylyn.tasks.core.data.TaskData;
import org.eclipse.mylyn.tasks.ui.TasksUi;
/**
* @author Shawn Minto
* @author Eugene Kuleshov
* @author Steffen Pingel
*/
public class PersonProposalProvider implements IContentProposalProvider {
private final AbstractTask currentTask;
private String currentUser;
private SortedSet<String> addressSet = null;
private String repositoryUrl;
private String connectorKind;
private TaskData currentTaskData;
public PersonProposalProvider(AbstractTask task, TaskData taskData) {
this.currentTask = task;
this.currentTaskData = taskData;
if (task != null) {
repositoryUrl = task.getRepositoryUrl();
connectorKind = task.getConnectorKind();
} else if (taskData != null) {
repositoryUrl = taskData.getRepositoryUrl();
connectorKind = taskData.getConnectorKind();
}
}
public PersonProposalProvider(String repositoryUrl, String repositoryKind) {
this.currentTask = null;
this.repositoryUrl = repositoryUrl;
this.connectorKind = repositoryKind;
}
public IContentProposal[] getProposals(String contents, int position) {
if (contents == null) {
throw new IllegalArgumentException();
}
int leftSeparator = getIndexOfLeftSeparator(contents, position);
int rightSeparator = getIndexOfRightSeparator(contents, position);
assert leftSeparator <= position;
assert position <= rightSeparator;
String searchText = contents.substring(leftSeparator + 1, position);
String resultPrefix = contents.substring(0, leftSeparator + 1);
String resultPostfix = contents.substring(rightSeparator);
// retrieve subset of the tree set using key range
SortedSet<String> addressSet = getAddressSet();
if (!searchText.equals("")) { //$NON-NLS-1$
searchText = searchText.toLowerCase();
char[] nextWord = searchText.toCharArray();
nextWord[searchText.length() - 1]++;
addressSet = addressSet.subSet(searchText, new String(nextWord));
}
IContentProposal[] result = new IContentProposal[addressSet.size()];
int i = 0;
for (final String address : addressSet) {
result[i++] = new PersonContentProposal(address, address.equalsIgnoreCase(currentUser), resultPrefix
+ address + resultPostfix, resultPrefix.length() + address.length());
}
Arrays.sort(result);
return result;
}
private int getIndexOfLeftSeparator(String contents, int position) {
int i = contents.lastIndexOf(' ', position - 1);
i = Math.max(contents.lastIndexOf(',', position - 1), i);
return i;
}
private int getIndexOfRightSeparator(String contents, int position) {
int index = contents.length();
int i = contents.indexOf(' ', position);
if (i != -1) {
index = Math.min(i, index);
}
i = contents.indexOf(',', position);
if (i != -1) {
index = Math.min(i, index);
}
return index;
}
private SortedSet<String> getAddressSet() {
if (addressSet != null) {
return addressSet;
}
addressSet = new TreeSet<String>(new Comparator<String>() {
public int compare(String s1, String s2) {
return s1.compareToIgnoreCase(s2);
}
});
if (currentTask != null) {
addAddress(currentTask.getOwner(), addressSet);
}
if (currentTaskData != null) {
addAddresses(currentTaskData, addressSet);
}
if (repositoryUrl != null && connectorKind != null) {
Set<AbstractTask> tasks = new HashSet<AbstractTask>();
if (currentTask != null) {
tasks.add(currentTask);
}
TaskRepository repository = TasksUi.getRepositoryManager().getRepository(connectorKind, repositoryUrl);
if (repository != null) {
AuthenticationCredentials credentials = repository.getCredentials(AuthenticationType.REPOSITORY);
if (credentials != null && credentials.getUserName().length() > 0) {
currentUser = credentials.getUserName();
addressSet.add(currentUser);
}
}
Collection<AbstractTask> allTasks = TasksUiPlugin.getTaskList().getAllTasks();
for (AbstractTask task : allTasks) {
if (repositoryUrl.equals(task.getRepositoryUrl())) {
tasks.add(task);
}
}
for (ITask task : tasks) {
addAddresses(task, addressSet);
}
}
return addressSet;
}
private void addAddresses(ITask task, Set<String> addressSet) {
// TODO: Creator, and CC should be stored on AbstractTask
addAddress(task.getOwner(), addressSet);
}
// TODO 3.5 re-implement
private void addAddresses(TaskData data, Set<String> addressSet) {
// addressSet.add(data.getAssignedTo()); // owner
// addAddress(data.getReporter(), addressSet); // ??
// for (String address : data.getCc()) {
// addAddress(address, addressSet);
// }
// for (TaskComment comment : currentTaskData.getComments()) {
// addAddress(comment.getAuthor(), addressSet);
// }
// for (RepositoryAttachment attachment : currentTaskData.getAttachments()) {
// addAddress(attachment.getCreator(), addressSet);
// }
}
private void addAddress(String address, Set<String> addressSet) {
if (address != null && address.trim().length() > 0) {
addressSet.add(address.trim());
}
}
}
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