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/*******************************************************************************
* Copyright (c) 2011 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
*******************************************************************************/
package org.eclipse.mylyn.tasks.core.data;
import java.util.Arrays;
import java.util.Collections;
import java.util.EnumSet;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.eclipse.core.runtime.Assert;
/**
* Base class for task schemas. Clients should subclass to define a specific schema.
*
* @author Steffen Pingel
* @since 3.5
*/
public abstract class AbstractTaskSchema {
public static class Field {
private EnumSet<Flag> flags;
private final String key;
private final String label;
private final String type;
protected Field(String key, String label, String type) {
this(key, label, type, (Flag[]) null);
}
protected Field(String key, String label, String type, Flag... flags) {
Assert.isNotNull(key);
Assert.isNotNull(label);
Assert.isNotNull(type);
this.key = key;
this.label = label;
this.type = type;
if (flags == null) {
this.flags = EnumSet.noneOf(Flag.class);
} else {
this.flags = EnumSet.copyOf(Arrays.asList(flags));
}
}
public TaskAttribute createAttribute(TaskAttribute parent) {
TaskAttribute attribute = parent.createMappedAttribute(getKey());
// meta data
TaskAttributeMetaData metaData = attribute.getMetaData();
metaData.setLabel(getLabel());
metaData.setType(getType());
metaData.setReadOnly(isReadOnly());
metaData.setKind(getKind());
// options
Map<String, String> options = getDefaultOptions();
if (options != null) {
for (Entry<String, String> option : options.entrySet()) {
attribute.putOption(option.getKey(), option.getValue());
}
}
return attribute;
}
public Map<String, String> getDefaultOptions() {
return Collections.emptyMap();
}
public String getKey() {
return key;
}
public String getKind() {
if (flags.contains(Flag.ATTRIBUTE)) {
return TaskAttribute.KIND_DEFAULT;
} else if (flags.contains(Flag.PEOPLE)) {
return TaskAttribute.KIND_PEOPLE;
} else if (flags.contains(Flag.OPERATION)) {
return TaskAttribute.KIND_OPERATION;
}
return null;
}
public String getLabel() {
return label;
}
public String getType() {
return type;
}
public boolean isReadOnly() {
return flags.contains(Flag.READ_ONLY);
}
@Override
public String toString() {
return getLabel();
}
}
public enum Flag {
ATTRIBUTE, OPERATION, PEOPLE, READ_ONLY
};
protected class FieldFactory {
private EnumSet<Flag> flags;
private String key;
private String label;
private String type;
public FieldFactory(Field source) {
this.flags = EnumSet.copyOf(source.flags);
this.key = source.key;
this.label = source.label;
this.type = source.type;
}
public FieldFactory addFlags(Flag... flags) {
this.flags.addAll(Arrays.asList(flags));
return this;
}
public Field create() {
return createField(key, label, type, (!flags.isEmpty()) ? flags.toArray(new Flag[0]) : null);
}
public FieldFactory flags(Flag... flags) {
this.flags = EnumSet.copyOf(Arrays.asList(flags));
return this;
}
public FieldFactory key(String key) {
this.key = key;
return this;
}
public FieldFactory label(String label) {
this.label = label;
return this;
}
public FieldFactory removeFlags(Flag... flags) {
this.flags.removeAll(Arrays.asList(flags));
return this;
}
public FieldFactory type(String type) {
this.type = type;
return this;
}
}
private final Map<String, Field> fieldByKey = new LinkedHashMap<String, Field>();
public Field getFieldByKey(String taskKey) {
return fieldByKey.get(taskKey);
}
public void initialize(TaskData taskData) {
for (Field field : fieldByKey.values()) {
field.createAttribute(taskData.getRoot());
}
}
protected Field createField(String key, String label, String type) {
return createField(key, label, type, (Flag[]) null);
}
protected Field createField(String key, String label, String type, Flag... flags) {
Field field = new Field(key, label, type, flags);
fieldByKey.put(key, field);
return field;
}
protected FieldFactory inheritFrom(Field source) {
return new FieldFactory(source);
}
}
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