Is there any simplest way to get cell data of a tableview in javafx using table index values without using cellfactory function.Iam looking simple single line code like this
getValueAt(1,2);//1=column number 2=row number
So i can access the cell data on column=1 and row=2.Thanks in advance
You can get the observable using the TableColumn and use getValue on it:
public static Object getValueAt(TableView table, int column, int row) {
return table.getColumns().get(column).getCellObservableValue(row).getValue();
}
You can also use the following code. when you select a row using mouse
ProcessDetail pd =
(ProcessDetail)tableDefined.getSelectionModel().getSelectedItem();
System.out.println("Value is in this row which is selected"+pd.getStatus());
Related
I have a QTableWidget and an object of class product called p.
I wanna add items to this table.
I tried the code below but no use.
void MainWindow:: add_to_basket (product p){
ui->tableWidget->insertRow(1);
QLineEdit *qle=new QLineEdit();
qle->setText(p.get_name());
ui->tableWidget->setCellWidget(1,1,qle);
QLineEdit *qle1=new QLineEdit();
qle1->setText(QString::number(p.get_price()));
ui->tableWidget->setCellWidget(1,2,qle1);
QSpinBox *qsb=new QSpinBox();
qsb->setValue(p.get_count());
ui->tableWidget->setCellWidget(1,3,qsb);
}
what should I do?
QTableWidget should have defined rowCount and columnCount properties. It can be done either via QTableWidget constructor (https://doc.qt.io/qt-5/qtablewidget.html#QTableWidget-1) or via appropriate methods (setRowCounts and setColumnCounts). If it is done already, that's great.
insertRow inserts an empty row into the table at given position. ui->tableWidget->insertRow(1) would insert a new row at position 1 only if you have previously defined rowCount and columnCount (see point 1).
It depends what is your idea here - if you would like to have at least 4 columns (please note that we are counting from 0 and the QSpinBox is attempted to be put into third column) and insert new product always at first row, your code with point 1 fullfilled will be work fine. But, if your idea is to add a new row each time new product is added, you should rather call ui->tableWidget->insertRow(tableWidget->rowCount()) and use that value to address appropriate row.
You may also want to have a look here for example how to setup QTableWidget: https://wiki.qt.io/How_to_Use_QTableWidget
In icCube reporting tool 6.1
is there a possibility to retrieve data like a cellValue(rowindex,columnindex) while i'm in a diffrent widget like chart box for example and wanna get a cell value from different table in the report? with Widget's JavaScript...? and also do other functions like column count or row count as i'm in the Widget's JavaScript of the actual table...?
UPDATED QUESTION
Example:
i wanna be able for example to get in the chart palette by Expression to
retrieve the number of the 1 row and column 2 (value 12)
and then for the example i wanna use this number and see if the number is greater then 10 then i will want the chart color to be Green and if less the blue... so i wanna know how to retrieve a specific cell from the table when the chart loads... and the chart will wait for a click on row from the table
so it will load after the table... so the rendering problem you've mentioned you have won't be a problem here.
You can share Table's data with global variable.
In On Data Received hook:
/**
* Return data object
*/
function(context, data, $box) {
window.ic3Data = {};
window.ic3Data.tableContext = context;
return data;
}
Then you can easily use PublicTableContext API from table widget in other charts. For example in a coloring expression for an AmChart:
return window.ic3Data.tableContext.cellValue(0,1) > 10 ? 'green' : 'red';
I have a qtablewidget with some rows. I need to sort these row randomly.
What is the best way to do this ? I have no idea except remove and add all row randomly ...
"I assume you are looking for some custom sort. Not column header click sort"
I have a way to do it. may be much more efficient way will be there.
get the "QList" of "QTableWidgetItem" using below function.
QList<QTableWidgetItem *> findItems(const QString & text, Qt::MatchFlags flags) const
Then sort your list as shown below with your condiion
bool sortFun(const QTableWidgetItem* v1, const QTableWidgetItem* v2)
{
return //your sor criteria;
}
int doComparison()
{
QList<QTableWidgetItem *> fieldsList;
// Add items to fieldsList.
qSort(fieldsList.begin(), fieldsList.end(), sortFun);
}
Not clear your "QTableWidget".
Then re assign your sorted list of "QTableWidgetItems" to QTableWidget
Finally I have done something different.
What I need to do:
- random the rows of my table
- I have a column with a "Time" and I initialize it with 15:00 for the first row and then add 1 minute for each row.
The solution I used:
- create a qlist with my times (15:00, 15:01, 15:02 ...)
- randomize the qlist (15:01, 15:03, ....)
- assign the qlist's items to the column "Time" of my table
- order my table with the column "Time" with the sort column method.
how can i create column and set their name from a list of String in JavaFx. Is there a methode like public String getColumnName(int column) and getColumnCountas in swingx in JavaFx?
No, the data model for a JavaFX TreeTableView is managed differently to the way the data model is managed in Swing.
The data model is represented by two properties in the TreeTableView class: root and columns.
root is a TreeItem<T> (where T is the data type represented by each row of the TreeTableView). It has a getChildren() method for child elements in the tree structure, expanded state, etc.
getColumns() returns an ObservableList<TreeTableColumn<T,?>>, which is essentially a list of columns. So the number of columns is determined by the size of this list. TreeTableColumn has a text property which encapsulates the title of the column. So the column names are represented by the text properties of the elements of the list returned by getColumns().
So, to sort of answer your question, given
TreeTableView<T> treeTable ;
(where T is replaced by some actual type), and
List<String> columnNames ;
you can populate the columns of the tree table with
for (String name : columnNames) {
TreeTableColumn<T,?> column = new TreeTableColumn<>(name);
treeTable.getColumns().add(column);
}
or if you prefer a Java 8 style:
columnNames.stream().map(TreeTableColumn::new)
.forEach(treeTable.getColumns()::add);
However, note that you almost certainly need to set a cell value factory on each column, and possibly configure it further in other ways.
I'm creating a table that displays information from a MySQL database, I'm using foreignkeys all over the place to cross-reference data.
Basically I have a datagrid with a column named 'system.' The system is an int that represents the id of an object in another table. I've used lableFunction to cross-reference the two and rename the column. But now sorting doesn't work, I understand that you have to create a custom sorting function. I have tried cross-referencing the two tables again, but that takes ~30sec to sort 1200 rows. Now I'm just clueless as to what I should try next.
Is there any way to access the columns field label inside the sort function?
public function order(a:Object,b:Object):int
{
var v1:String = a.sys;
var v2:String = b.sys;
if ( v1 < v2 ){
trace(-1);
return -1;
}else if ( v1 > v2 ){
trace(1);
return 1;
}else {
trace(0);
return 0;
}
}
One way to handle this is to go through the objects you received and add the label as a property on each of them based on the cross-referenced id. Then you can specify your label property to display in your data grid column instead of using a label function. That way you would get sorting as you'd expect rather than having to create your own sort function.
The way that DataGrids, and other list based classes work is by using itemRenderers. Renderers are only created for the data that is shown on screen. In most cases there is a lot more data in your dataProvider than what is seen on screen.
Trying to sort your data based on something displayed by the dataGrid will most likely not give you the results you want.
But, there is no reason you can't call the same label function on your data objects in the sortFunction.
One way is to use the itemToLabel function of the dataGrid:
var v1:String = dataGrid.itemToLabel(a);
var v2:String = dataGrid.itemToLabel(b);
A second way is to just call the labelFunction explicitly:
var v1:String = labelFunction(a);
var v2:String = = labelFunction(b);
In my experience I have found sorting to be extremely quick, however you're recordset is slightly larger than what I usually load in memory at a single time.