问题
I have creating this treetable
Now I want to sum up th children values and show the result in the parent cell under the related column. For example for Function 7 in column 2 and row 2 I want to right 2.0, and for Function 11 column 4 row 4 right 1.0 (function 12 + function 13)
Here is the code which produces the treetable.
root.setExpanded(true);
Set<String> combinedKeys = new HashSet<>(dc.getCombiFunc().keySet());
Set<String> funcAllKeys = new HashSet<>(dc.getSortedfuncAll().keySet());
funcAllKeys.removeAll(dc.getCombiFunc().keySet());
for (List<String> value : dc.getCombiFunc().values()) {
funcAllKeys.removeAll(value);
}
for (String valueremained : funcAllKeys) {
ArrayList<String> tempNameId = new ArrayList<>();
tempNameId.add(dc.getSortedfuncAll().get(valueremained));
// all elements which are not in combined functions (They are all
// orphan)
root.getChildren().add(new TreeItem<String>(tempNameId.get(0)));
}
// Getting Keys that have children//////
Set<String> keyFromcombined = new HashSet<>();
List<String> valueOfCombined = new ArrayList<String>();
for (Entry<String, List<String>> ent : dc.getCombiFunc().entrySet()) {
for (int i = 0; i < ent.getValue().size(); i++)
valueOfCombined.add(ent.getValue().get(i));
}
List<String> rootKeyList = new ArrayList<>();
for (String key : combinedKeys) {
if (!valueOfCombined.contains((key))) {
keyFromcombined.add(dc.getFuncAll().get(key));
rootKeyList.add(key);
}
}
String[] rootKeys = rootKeyList.toArray(new String[rootKeyList.size()]);
// ////////////////treetable////////////////////////////
treeTable.setRoot(root);
Arrays.stream(rootKeys).forEach(
rootKey -> root.getChildren().add(
createTreeItem(dc.getCombiFunc(), rootKey)));
// ////////////////First column/////////////////////////
TreeTableColumn<String, String> firstColumn = new TreeTableColumn<>("");
treeTable.getColumns().add(firstColumn);// Tree column
firstColumn.setPrefWidth(50);
firstColumn
.setCellValueFactory(new Callback<CellDataFeatures<String, String>, ObservableValue<String>>() {
public ObservableValue<String> call(
CellDataFeatures<String, String> p) {
return new ReadOnlyStringWrapper(p.getValue()
.getValue());
}
});
// //////////////////Rest Columns////////////////////////
for (Entry<String, String> ent : dc.getSortedAssignedOrg().entrySet()) {
TreeTableColumn<String, ArrayList<String>> col = new TreeTableColumn<>();
Label label = new Label(ent.getValue());
col.setGraphic(label);
label.setTooltip(new Tooltip(label.getText()));// tooltip for column
// headers
col.setPrefWidth(45);
// cell Value Factory////////////////////////
col.setCellValueFactory(new Callback<TreeTableColumn.CellDataFeatures<String, ArrayList<String>>, ObservableValue<ArrayList<String>>>() {
@Override
public ObservableValue<ArrayList<String>> call(
CellDataFeatures<String, ArrayList<String>> param) {
TreeMap<String, List<String>> temp = (TreeMap<String, List<String>>) dc
.getFuncTypeOrg().clone();
ArrayList<String> result = new ArrayList<>();
for (int i = 0; i < dc.getFuncTypeOrg().size(); i++) {
List<String> list = temp.firstEntry().getValue();
String key = temp.firstEntry().getKey();
if (list.get(1).equals(param.getValue().getValue())
&& !list.get(5).equals(label.getText())) {
result.add("white");
}
if (!root.isLeaf()) {
result.add("parent");
}
if (list.get(1).equals(param.getValue().getValue())
&& list.get(5).equals(label.getText())) {
result.add(0, list.get(2));// weight
if (list.size() > 6) {
result.add(1, list.get(list.size() - 1));// color
result.add(2, list.get(6));// App component
}
else
// result.add("white");
result.add("noOrg");
} else
temp.remove(key);
}
return new ReadOnlyObjectWrapper<ArrayList<String>>(result);
}
}); // end cell Value Factory
// //////////////cellfactory/////////////////////////
col.setCellFactory(new Callback<TreeTableColumn<String, ArrayList<String>>, TreeTableCell<String, ArrayList<String>>>() {
@Override
public TreeTableCell<String, ArrayList<String>> call(
TreeTableColumn<String, ArrayList<String>> param) {
return new TreeTableCell<String, ArrayList<String>>() {
public void updateItem(ArrayList<String> item,
boolean empty) {
super.updateItem(item, empty);
if (item == null || empty) {
setStyle("");
setText("");
} else if (item.contains("Green")) {
float weightInt = Float.parseFloat(item.get(0));
float res = weightInt * 1;
String resString = Float.toString(res);
this.setStyle("-fx-background-color:green");
setTooltip(new Tooltip(item.get(2)));
setText(resString);
} else if (item.contains("yellow")) {
this.setStyle("-fx-background-color:yellow");
setTooltip(new Tooltip(item.get(2)));
setText("0");
} else if (item.contains("white")) {
this.setStyle("-fx-background-color:linear-gradient(black, white); ");
// setText("DD");
} else if (item.contains("parent")) {
for (int i = 0; i < dc.getFuncTypeOrg().size(); i++) {
}
String text = param.getCellData(root).get(0);
// setText(text);
}
}
};
};
});// end cell factory
treeTable.getColumns().add(col);
}//end for loop col
TreeMap temp clones dc.getFuncTypeOrg(). In this TreeMap I have value for each child (color and the number). then in cellfactory i multiply value in color ( green = 1 and yellow = 0). Outside the loop I thought to make a treemap containg each parent as key and all it's children as value. Then I can sum up children values together and make a treemap in which first key is parent and as value the required value(or just string ArrayList ). After that I can check the name of cell in cellFactory and if it is a parent just right the value in the cell. I have been told how i can get treeitem values, and i am now here :
//after col loop ends
TreeMap<String, List<TreeItem<String>>> mytreemap = new TreeMap<>();
TreeMap<String, List<String>> parChild = new TreeMap<>();
for(TreeItem node: root.getChildren()){
if(!node.isLeaf())
mytreemap.put(node.getValue().toString(), node.getChildren());
}
for(Entry<String, List<TreeItem<String>>> ent: mytreemap.entrySet()){
for(TreeItem myItem : ent.getValue()){
// how can i fill parChild with parent as key and all its children as value?
System.out.println(ent.getKey()+" "+myItem.getValue());
}
}
treeTable.setPrefWidth(1200);
treeTable.setPrefHeight(500);
treeTable.setShowRoot(false);
treeTable.setTableMenuButtonVisible(true);
return treeTable; }
Here at setCellFactory
else if (item.contains("parent")) {
for (int i = 0; i < dc.getFuncTypeOrg().size(); i++) {
}
i can get the roots. Is there a way to do a recursion (up to the number of children and subchildren for that root cell) and add their value together and setText the parent cell to that value?
回答1:
You can use onEditCommit method to add all childern values and show them in parent cell. For example
column1.setOnEditCommit((evt) -> {
//finalsing value of the cell
evt.getRowValue().getValue().setCellValue((evt.getNewValue()));
//Returns all the sibblings of the current cell
ObservableList<TreeItem> children = evt.getRowValue().getParent().getChildren();
int parentValue = 0;
for (TreeItem<> child : children) {
parentValue = parentValue + Integer.valueOf(child.getValue().getCellValue());
}
evt.getRowValue().getParent().getValue().setCellValue(parentValue);
});
来源：https://stackoverflow.com/questions/29007045/add-up-childern-values-and-write-them-in-parent-javafx