/*
* Autopsy Forensic Browser
*
* Copyright 2013-16 Basis Technology Corp.
* Contact: carrier <at> sleuthkit <dot> org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.sleuthkit.autopsy.timeline.ui.detailview.tree;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Supplier;
import javafx.scene.control.TreeItem;
import org.sleuthkit.autopsy.coreutils.ThreadConfined;
import org.sleuthkit.autopsy.timeline.datamodel.TimeLineEvent;
import org.sleuthkit.autopsy.timeline.zooming.EventTypeZoomLevel;
/**
* EventTreeItem for base event types (file system, misc, web, ...)
*/
class BaseTypeTreeItem extends EventTypeTreeItem {
/**
* A map of the children TreeItems, keyed by EventTypes if the children are
* SubTypeTreeItems or by String if the children are DescriptionTreeItems.
*/
private final Map<Object, EventsTreeItem> childMap = new HashMap<>();
/**
* Constructor
*
* @param event the event that backs this tree item
* @param comparator the initial comparator used to sort the children of
* this tree item
*/
BaseTypeTreeItem(TimeLineEvent event, Comparator<TreeItem<TimeLineEvent>> comparator) {
super(event.getEventType().getBaseType(), comparator);
}
@ThreadConfined(type = ThreadConfined.ThreadType.JFX)
@Override
public void insert(List<TimeLineEvent> path) {
TimeLineEvent head = path.get(0);
Supplier< EventsTreeItem> treeItemConstructor;
String descriptionKey;
/*
* if the stripe and this tree item have the same type, create a
* description tree item, else create a sub-type tree item
*/
if (head.getEventType().getZoomLevel() == EventTypeZoomLevel.SUB_TYPE) {
descriptionKey = head.getEventType().getDisplayName();
treeItemConstructor = () -> configureNewTreeItem(new SubTypeTreeItem(head, getComparator()));
} else {
descriptionKey = head.getDescription();
TimeLineEvent stripe = path.remove(0); //remove head of list if we are going straight to description
treeItemConstructor = () -> configureNewTreeItem(new DescriptionTreeItem(stripe, getComparator()));
}
EventsTreeItem treeItem = childMap.computeIfAbsent(descriptionKey, key -> treeItemConstructor.get());
//insert (rest of) path in to new treeItem
if (path.isEmpty() == false) {
treeItem.insert(path);
}
}
@Override
void remove(List<TimeLineEvent> path) {
TimeLineEvent head = path.get(0);
EventsTreeItem descTreeItem;
/*
* if the stripe and this tree item have the same type, get the child
* item keyed on event type, else keyed on description.
*/
if (head.getEventType().getZoomLevel() == EventTypeZoomLevel.SUB_TYPE) {
descTreeItem = childMap.get(head.getEventType().getDisplayName());
} else {
path.remove(0); //remove head of list if we are going straight to description
descTreeItem = childMap.get(head.getDescription());
}
//remove path from child too
if (descTreeItem != null) {
if (path.isEmpty() == false) {
descTreeItem.remove(path);
}
//if child item has no children, remove it also.
if (descTreeItem.getChildren().isEmpty()) {
childMap.remove(head.getDescription());
getChildren().remove(descTreeItem);
}
}
}
}