/*******************************************************************************
* Copyright (c) 2003, 2006 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.activities.ws;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.activities.IActivity;
import org.eclipse.ui.activities.IActivityManager;
import org.eclipse.ui.activities.IActivityRequirementBinding;
import org.eclipse.ui.activities.ICategory;
import org.eclipse.ui.activities.ICategoryActivityBinding;
/**
* Tree provider that provides <code>ICategory</code> objects in an
* <code>IActivityManager</code> at the top level, with <code>IActivity</code>
* objects as second level children under the <code>ICategory</code>.
* <p>
* Note that the <code>IActivity</code> objects are not instances of
* <code>org.eclipse.ui.internal.activities.Activity</code>, but rather proxies
* that also have a pointer to the <code>ICategory</code> for which the
* <code>IActivity</code> should be represented under.
*
* @since 3.0
*/
public class ActivityCategoryContentProvider implements ITreeContentProvider {
/**
* The manager to extract content from.
*/
private IActivityManager manager;
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#dispose()
*/
public void dispose() {
manager = null;
}
/**
* @param category the category to fetch.
* @return all activities in the category.
*/
private IActivity[] getCategoryActivities(ICategory category) {
Set activityBindings = category.getCategoryActivityBindings();
List categoryActivities = new ArrayList(activityBindings.size());
for (Iterator j = activityBindings.iterator(); j.hasNext();) {
ICategoryActivityBinding binding = (ICategoryActivityBinding) j
.next();
String activityId = binding.getActivityId();
IActivity activity = manager.getActivity(activityId);
if (activity.isDefined()) {
categoryActivities.add(new CategorizedActivity(category,
activity));
}
}
return (IActivity[]) categoryActivities
.toArray(new IActivity[categoryActivities.size()]);
}
/**
* Get the duplicate activities found in the other defined categories.
*
* @param categorizedActivity
* The categorized activity.
* @return the list of duplicate categorized activities.
*/
public Object[] getDuplicateCategoryActivities(
CategorizedActivity categorizedActivity) {
ArrayList duplicateCategorizedactivities = new ArrayList();
Set categoryIds = manager.getDefinedCategoryIds();
ICategory currentCategory = null;
String currentActivityId = null;
IActivity[] categoryActivities = null;
String currentCategoryId = null;
// find the duplicate activities in the defined categories
for (Iterator i = categoryIds.iterator(); i.hasNext();) {
currentCategoryId = (String) i.next();
if (!currentCategoryId.equals(categorizedActivity.getCategory()
.getId())) {
currentCategory = manager.getCategory(currentCategoryId);
categoryActivities = getCategoryActivities(currentCategory);
// traverse the category's activities to find a duplicate
for (int index = 0; index < categoryActivities.length; index++) {
currentActivityId = categoryActivities[index].getId();
if (currentActivityId.equals(categorizedActivity
.getActivity().getId())) {
duplicateCategorizedactivities
.add(new CategorizedActivity(currentCategory,
manager.getActivity(currentActivityId)));
// Assuming only one unique activity per category -
// break
break;
}
}
}
}
return duplicateCategorizedactivities.toArray();
}
/**
* Get the child required activities.
*
* @param activityId
* The parent activity id.
* @return the list of child required activities.
*/
public Object[] getChildRequiredActivities(String activityId) {
ArrayList childRequiredActivities = new ArrayList();
IActivity activity = manager.getActivity(activityId);
Set actvitiyRequirementBindings = activity
.getActivityRequirementBindings();
String requiredActivityId = null;
IActivityRequirementBinding currentActivityRequirementBinding = null;
Object[] currentCategoryIds = null;
for (Iterator i = actvitiyRequirementBindings.iterator(); i.hasNext();) {
currentActivityRequirementBinding = (IActivityRequirementBinding) i
.next();
requiredActivityId = currentActivityRequirementBinding
.getRequiredActivityId();
currentCategoryIds = getActivityCategories(requiredActivityId);
for (int index = 0; index < currentCategoryIds.length; index++) {
childRequiredActivities.add(new CategorizedActivity(manager
.getCategory((String) currentCategoryIds[index]),
manager.getActivity(requiredActivityId)));
}
}
return childRequiredActivities.toArray();
}
/**
* Get the parent required activities.
*
* @param activityId
* The child activity id.
* @return the list of parent required activities.
*/
public Object[] getParentRequiredActivities(String activityId) {
ArrayList parentRequiredActivities = new ArrayList();
Set definedActivities = manager.getDefinedActivityIds();
String currentActivityId = null;
Set activityRequirementBindings = null;
IActivityRequirementBinding currentActivityRequirementBinding = null;
Object[] currentCategoryIds = null;
for (Iterator i = definedActivities.iterator(); i.hasNext();) {
currentActivityId = (String) i.next();
activityRequirementBindings = manager
.getActivity(currentActivityId)
.getActivityRequirementBindings();
for (Iterator j = activityRequirementBindings.iterator(); j
.hasNext();) {
currentActivityRequirementBinding = (IActivityRequirementBinding) j
.next();
if (currentActivityRequirementBinding.getRequiredActivityId()
.equals(activityId)) {
// We found one - add it to the list
currentCategoryIds = getActivityCategories(currentActivityId);
for (int index = 0; index < currentCategoryIds.length; index++) {
parentRequiredActivities
.add(new CategorizedActivity(
manager
.getCategory((String) currentCategoryIds[index]),
manager.getActivity(currentActivityId)));
}
}
}
}
return parentRequiredActivities.toArray();
}
/**
* Get the activity's categories (there could be more than one).
*
* @param activityId
* The activity id.
* @return the activity's categories.
*/
private Object[] getActivityCategories(String activityId) {
ArrayList activityCategories = new ArrayList();
Set categoryIds = manager.getDefinedCategoryIds();
String currentCategoryId = null;
IActivity[] categoryActivities = null;
for (Iterator i = categoryIds.iterator(); i.hasNext();) {
currentCategoryId = (String) i.next();
categoryActivities = getCategoryActivities(manager
.getCategory(currentCategoryId));
for (int index = 0; index < categoryActivities.length; index++) {
if (categoryActivities[index].getId().equals(activityId)) {
activityCategories.add(currentCategoryId);
break;
}
}
}
return activityCategories.toArray();
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
*/
public Object[] getChildren(Object parentElement) {
if (parentElement instanceof IActivityManager) {
Set categoryIds = manager.getDefinedCategoryIds();
ArrayList categories = new ArrayList(categoryIds.size());
for (Iterator i = categoryIds.iterator(); i.hasNext();) {
String categoryId = (String) i.next();
ICategory category = manager.getCategory(categoryId);
if (getCategoryActivities(category).length > 0) {
categories.add(category);
}
}
return categories.toArray();
} else if (parentElement instanceof ICategory) {
return getCategoryActivities((ICategory) parentElement);
}
return new Object[0];
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*/
public Object[] getElements(Object inputElement) {
return getChildren(inputElement);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
*/
public Object getParent(Object element) {
if (element instanceof CategorizedActivity) {
return ((CategorizedActivity) element).getCategory();
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
*/
public boolean hasChildren(Object element) {
if (element instanceof IActivityManager || element instanceof ICategory) {
return true;
}
return false;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
manager = (IActivityManager) newInput;
}
}