JavaFX Tableviews - compare and highlight cells - javafx-8

Question

i am quite new to Javafx, and would like your help in solving the below:
I have two tableviews, and i would like to compare the column values between the two and highlight the cell of one of the tables, if the values are different.
(Assumption - both tables have same number of columns, restricting rows to the minimum content among tables)
ex:
table 1 has
column1 column2 column3
1 America Newyork
table 2 has
column1 column2 column3
1 America Washington
The second table last column should be highlighted with a textfill
I have this pseudo code, doesnt seem to work though
int colsize1= tableview1.getColumns().size();
int colsize2= tableview2.getColumns().size();
if(colsize1 != colsize2) {
alert("number of columns do not match, cannot be validated");
return;
}
ObservableList<ObservableList<String>> da1 = FXCollections.observableArrayList();
ObservableList<ObservableList<String>> da2 = FXCollections.observableArrayList();
da1.addAll(tableview1.getItems());
da2.addAll(tableview2.getItems());
int size = Math.min(da1.size(), da2.size());
for(int i = 0; i < size; i++) {
for (int j = 0; j < colsize1; j++) {
if(!(tableview1.getItems().get(i).get(j).equals(tableview2.getItems().get(i).get(j)))) {
String value = tableview1.getItems().get(i).get(j);
String value2 = tableview2.getItems().get(i).get(j);
int currentrow = i;
TableColumn<TableView<ObservableList<String>>, String> columns = (TableColumn) tableview2.getColumns().get(j);
columns.setCellFactory(column -> {
return new TableCell<TableView<ObservableList<String>>, String>() {
#Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
System.out.println("item is " + item + " empty is " + empty);
if(empty){
if(value != value2){
this.setStyle("-fx-background-color : yellow");
}
}
if (!empty) {
if((value != item) && currentrow == getTableRow().getIndex()) {
// int rowindex = getTableRow().getIndex();
System.out.println(" item is " + item);
this.setText(item);
this.setTextFill(Color.RED);
this.setStyle("-fx-background-color : yellow");
}else {
this.setText(item);
}
}
}
};
});
}
}
}
}

Answer 1

I found a solution to the given problem.
#FXML
public void onvalidatebutton() {
int colsize1 = tableview1.getColumns().size();
int colsize2 = tableview2.getColumns().size();
if (colsize1 != colsize2) {
alert("number of columns do not match, cannot be validated");
return;
}
int size = tableview1.getItems().size();
for (int i = 0; i < size; i++) {
for (int j = 0; j < colsize1; j++) {
TableColumn columns2 = tableview2.getColumns().get(j);
// String value = tableview1.getItems().get(currentrow).get(j);
settingcell(columns2);
}
}
}
private void settingcell(TableColumn<ObservableList<String>,String> column) {
column.setCellFactory(col -> {
return new TableCell<ObservableList<String>, String>() {
#Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (!empty) {
int ind = getTableView().getVisibleLeafIndex(column);
// System.out.println(" ind is " + ind);
String value = tableview1.getItems().get(this.getIndex()).get(ind);
// System.out.println(" value is " + value + " & item is "+ item);
if (!(StringUtils.equals(value,item))) {
this.setText(item);
this.setTextFill(Color.RED);
this.setStyle("-fx-background-color : yellow");
} else {
this.setText(item);
}
}
else{
this.setText("");
}
}
};
});
}