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/*******************************************************************************
* Copyright (c) 2000, 2018 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ccvs.ui.tags;
import java.util.ArrayList;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.team.internal.ccvs.core.CVSTag;
import org.eclipse.ui.model.IWorkbenchAdapter;
/**
* A workbench adapter for a tag source that creates a model
* for displaying the tags from a tag source in a tree or table
* viewer. The workbench adapter is not a singleton since it needs
* to be configured to display certain types of tags.
*/
public class TagSourceWorkbenchAdapter implements IAdaptable, IWorkbenchAdapter {
/**
* Constants for configuring which types of tags should be displayed.
*/
public static final int INCLUDE_HEAD_TAG = 1;
public static final int INCLUDE_BASE_TAG = 2;
public static final int INCLUDE_BRANCHES = 4;
public static final int INCLUDE_VERSIONS = 8;
public static final int INCLUDE_DATES = 16;
public static final int INCLUDE_ALL_TAGS = INCLUDE_HEAD_TAG | INCLUDE_BASE_TAG | INCLUDE_BRANCHES | INCLUDE_VERSIONS | INCLUDE_DATES;
TagRootElement branches;
TagRootElement versions;
TagRootElement dates;
int includeFlags;
public static class ProjectElementComparator extends ViewerComparator {
/*
* The order in the diaog should be HEAD, Branches, Versions, Dates, BASE
*/
@Override
public int category(Object element) {
if (element instanceof TagElement) {
CVSTag tag = ((TagElement)element).getTag();
if (tag == CVSTag.DEFAULT) return 1;
if (tag == CVSTag.BASE) return 5;
if (tag.getType() == CVSTag.BRANCH) return 2;
if (tag.getType() == CVSTag.VERSION) return 3;
if (tag.getType() == CVSTag.DATE) return 4;
} else if (element instanceof TagRootElement) {
if(((TagRootElement)element).getTypeOfTagRoot() == CVSTag.BRANCH) return 2;
if(((TagRootElement)element).getTypeOfTagRoot() == CVSTag.VERSION) return 3;
if(((TagRootElement)element).getTypeOfTagRoot() == CVSTag.DATE) return 4;
}
return 0;
}
@Override
public int compare(Viewer viewer, Object e1, Object e2) {
int cat1 = category(e1);
int cat2 = category(e2);
if (cat1 != cat2) return cat1 - cat2;
// Sort version tags in reverse order
if (e1 instanceof TagElement){
CVSTag tag1 = ((TagElement)e1).getTag();
int type = tag1.getType();
if(type == CVSTag.VERSION) {
return -1 * super.compare(viewer, e1, e2);
}else if(type == CVSTag.DATE){
return -1*tag1.compareTo(((TagElement)e2).getTag());
}
}
return super.compare(viewer, e1, e2);
}
}
/**
* Create a viewer input for the tag source
* @param tagSource the tag source
* @param includeFlags the types of tags to include
* @return a tree viewer input
*/
public static Object createInput(TagSource tagSource, int includeFlags) {
if (includeFlags == INCLUDE_VERSIONS) {
// Versions only is requested by the merge start page.
// Only need to show version tags
return new TagRootElement(null, tagSource, CVSTag.VERSION);
}
return new TagSourceWorkbenchAdapter(tagSource, includeFlags);
}
public TagSourceWorkbenchAdapter(TagSource tagSource, int includeFlags) {
this.includeFlags = includeFlags;
if (this.includeFlags == 0) this.includeFlags = INCLUDE_ALL_TAGS;
if ((includeFlags & INCLUDE_BRANCHES) > 0) {
branches = new TagRootElement(this, tagSource, CVSTag.BRANCH);
}
if ((includeFlags & INCLUDE_VERSIONS) > 0) {
versions = new TagRootElement(this, tagSource, CVSTag.VERSION);
}
if ((includeFlags & INCLUDE_DATES) > 0) {
dates = new TagRootElement(this, tagSource, CVSTag.DATE);
}
}
@Override
public Object[] getChildren(Object o) {
ArrayList<IAdaptable> children = new ArrayList<>(4);
if ((includeFlags & INCLUDE_HEAD_TAG) > 0) {
children.add(new TagElement(this, CVSTag.DEFAULT));
}
if ((includeFlags & INCLUDE_BASE_TAG) > 0) {
children.add(new TagElement(this, CVSTag.BASE));
}
if ((includeFlags & INCLUDE_BRANCHES) > 0) {
children.add(branches);
}
if ((includeFlags & INCLUDE_VERSIONS) > 0) {
children.add(versions);
}
if ((includeFlags & INCLUDE_DATES) > 0) {
children.add(dates);
}
return children.toArray(new Object[children.size()]);
}
@Override
public <T> T getAdapter(Class<T> adapter) {
if (adapter == IWorkbenchAdapter.class) return adapter.cast(this);
return null;
}
@Override
public ImageDescriptor getImageDescriptor(Object object) {
return null;
}
@Override
public String getLabel(Object o) {
return null;
}
@Override
public Object getParent(Object o) {
return null;
}
}
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