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Add TreeItem recycling for TreeVisualizer

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Rohit Awate 2018-08-13 16:39:27 +05:30
parent 65f689be47
commit 0be0fbce41
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GPG key ID: 1051D7B79CF2EE25
1 changed files with 24 additions and 5 deletions
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29
src/main/java/com/rohitawate/everest/controllers/visualizers/TreeVisualizer.java
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@ -29,9 +29,12 @@ import java.util.Map;
public class TreeVisualizer extends Visualizer { public class TreeVisualizer extends Visualizer {
private TreeView<String> visualizer; private TreeView<String> visualizer;
private ArrayList<TreeItem<String>> recycledNodes;
private int lastNodeIndex;
public TreeVisualizer() { public TreeVisualizer() {
visualizer = new TreeView<>(); visualizer = new TreeView<>();
recycledNodes = new ArrayList<>();
visualizer.setShowRoot(false); visualizer.setShowRoot(false);
visualizer.setCache(true); visualizer.setCache(true);
setContent(visualizer); setContent(visualizer);
@ -39,7 +42,7 @@ public class TreeVisualizer extends Visualizer {
public void populate(String body) throws IOException { public void populate(String body) throws IOException {
JsonNode tree = EverestUtilities.jsonMapper.readTree(body); JsonNode tree = EverestUtilities.jsonMapper.readTree(body);
this.populate(new TreeItem<>(), "root", tree); this.populate(getTreeNode(null), "root", tree);
} }
private void populate(TreeItem<String> rootItem, String rootName, JsonNode root) { private void populate(TreeItem<String> rootItem, String rootName, JsonNode root) {
@ -60,9 +63,9 @@ public class TreeVisualizer extends Visualizer {
currentNode = iterator.next(); currentNode = iterator.next();
if (currentNode.isValueNode()) { if (currentNode.isValueNode()) {
items.add(new TreeItem<>(i++ + ": " + EverestUtilities.trimString(currentNode.toString()))); items.add(getTreeNode(i++ + ": " + EverestUtilities.trimString(currentNode.toString())));
} else if (currentNode.isObject()) { } else if (currentNode.isObject()) {
TreeItem<String> newRoot = new TreeItem<>(); TreeItem<String> newRoot = getTreeNode(null);
newRoot.setExpanded(true); newRoot.setExpanded(true);
items.add(newRoot); items.add(newRoot);
populate(newRoot, i++ + ": [Anonymous Object]", currentNode); populate(newRoot, i++ + ": [Anonymous Object]", currentNode);
@ -77,10 +80,10 @@ public class TreeVisualizer extends Visualizer {
currentNode = currentEntry.getValue(); currentNode = currentEntry.getValue();
if (currentNode.isValueNode()) { if (currentNode.isValueNode()) {
items.add(new TreeItem<>(currentEntry.getKey() + ": " items.add(getTreeNode(currentEntry.getKey() + ": "
+ EverestUtilities.trimString(currentNode.toString()))); + EverestUtilities.trimString(currentNode.toString())));
} else if (currentNode.isArray() || currentNode.isObject()) { } else if (currentNode.isArray() || currentNode.isObject()) {
TreeItem<String> newRoot = new TreeItem<>(); TreeItem<String> newRoot = getTreeNode(null);
newRoot.setExpanded(true); newRoot.setExpanded(true);
items.add(newRoot); items.add(newRoot);
populate(newRoot, currentEntry.getKey(), currentNode); populate(newRoot, currentEntry.getKey(), currentNode);
@ -91,7 +94,23 @@ public class TreeVisualizer extends Visualizer {
rootItem.getChildren().addAll(items); rootItem.getChildren().addAll(items);
} }
private TreeItem<String> getTreeNode(String value) {
TreeItem<String> node;
if (recycledNodes.size() > 0) {
node = recycledNodes.get(lastNodeIndex);
recycledNodes.remove(lastNodeIndex--);
} else {
node = new TreeItem<>();
}
node.setValue(value);
node.getChildren().clear();
return node;
}
public void clear() { public void clear() {
recycledNodes.addAll(visualizer.getRoot().getChildren());
visualizer.setRoot(null); visualizer.setRoot(null);
System.gc(); System.gc();
} }