I have a TableViewer in my application that has the following features:
It gets data from a web service, and upon selecting a row, buttons get enabled and you can make operations (all these operations are calling the webservice, so the table stays in sync with the database).
When I add a new line, I submit an "add" command to the web service, and refresh the table. Now I have a new line, and I know which line is the new one.
Now I want to select the new line by default, and I tried many commands like tableViewer.getTable().select(index); and as it is now:
public void selectAdded(int id) {
tableViewer.getTable().setSelection(id);
}
This picture shows what is the problem:
The upper one shows as it works now with this code. The row below shows how it looks when I click a row. The problem is, the buttons don't get enabled, and I have two read-only text fields that remains blank instead of showing the information I need. But when I click, everything works normally.
What should I do to achive that selectAdded(int id) acts like a click? The solution should be multi-platform (Mac/Windows), but at least on Mac.
Don't use the Table selection methods which using TableViewer. Instead use
ISelection selection = new StructuredSelection(model object);
tableViewer.setSelection(selection);
'model object' is the model object for the row you want to select (as returned by your content provider).
Related
I have this huge RCP enterprise CRM system I'm working on. Last year it was updated to RCP 4.5. Sadly I'm very bad with RCP because I never had to do with the frontend of it... So my question might seem a little bit strange.
Anyways, my problem is:
I have one table window where all the rows all filled up correctly with data. One column has a function, where I can double click on and one other window will open, where I can edit/remove/add data to it. The IDs of the added values are then showing in the main window's table column. (this is working correctly)
The problem: If I open this editor window, edit something (add new values or remove one or more), then click save and close this edit window (it's actually a new tab...) and then going back to this window after the editing, it will show me the state BEFORE the editing... (new values are not in the list, removed one are still on the list) The values are correctly stored or deleted in the DB, only the UI seems to stuck with the old state. I have to restart the GUI if I want to see the correct (and the actual) state.
My question: how can I force RCP to forget the old state for this tab/window and load the data everytime from DB? I tried many things in the saving method of this window (refresh, dispose of), but nothing seems to work...
Are you using a TableViewer or so?. using the tableViewer.setInput(...) again with new data + layout() may solve the problem, buit as #greg-449 said, we need for information on what kind of taale you are using to display your data and how you tell that table where is this data...
I have developed an Eclipse plugin, when I clicked the button a table appears on the view. However, this table does not refresh itself, when I click it again or when I a run operations on the table (such as deletion).
While I was implementing my table, I used TableColumn to create my columns and "TableItem" for the rows and values. Therefore, the "TableViewer"s refresh or remove functions does not work.
My table is able to appear, when I click the button and I call this function in the handler, such as;
HandlerUtil.getActiveWorkbenchWindow(event).getActivePage().showView("ViewID");
However, still I am not able refresh it. Any help would be nice.
Thanks!
Basically, you need to call viewer.update() whenever you want to refresh or update the table. SWT tables and JFace viewers does not have a way to monitor the data model.
Alternatively, you can use Eclipse Data Binding to bind the model and the controls/viewers together. Have a look at this entry level tutorial to get you started.
I have made a class called Clients, that it has like some simple attributes like client_id, client_name and client_age. I have programmed a small GUI with NetBeans that after I input the data from a client by pressing a button I get it displayed in a jTable.
The source code for adding this in the jTable is:
for (int i=0;i<customerV.length;i++){
jTable2.setValueAt(customerV[i].getName(), i, 0);
}
I would like that if I click one element on the jTable to be able to add some orders to that client by making using of a jButton. If I program that in a console it would be like:
Order order1=new Order("1000","41211")
in which the first field is the order id and the second is the order number, so if I want to assign that to Customer 1 it would be like.
c1.assignOrder(order1)
how I can do that by using java swing? I mean to select the whole object from the element that I click in the jTable
Set instances of your Clients to the table model instead of client names (like: jTable2.setValueAt(customerV[i], i, 0);)
Implement a custom renderer that will render the client class as needed (e.g. display the client's name) and set it to the table. Another (easier) option would be to just override toString on Clients to return client's name, or whatever you want to be displayed and do not bother about the renderer.
call getValueAt() to get Clients instance bound to particular cell in your button click handler.
I am trying to filter a list that is placed into a listview through the use of 2 drop down boxes.
The first dropdown box is titled price and the second is owner.
I want to be able to select a value in one or more of these drop down boxes and then have the List view re-render with the filtered results.
The trouble is I do not know how to begin this task, would someone be so kind as to enlighten me :D
Thanks in advance!
Your best starting point is probably this example: (Source code also available on this page, ChoicePage.java is the name)
First of all, you have to use a dynamic model in your ListView that generates the list of items depending on what you had selected in the dropdown boxes.
Then the basic idea is that you add an AjaxFormComponentUpdatingBehavior to the components that control the updates (your two dropdown boxes in your case), and in the onUpdate() method of this behaviour you should add the component you want to update to that AjaxRequestTarget passed.
I have a CellTable and need a column with hyper links and onclick handlers inside cells.
1st question, what am doing wrong if I have:
Column<MyObject, Anchor> linkColumn = new Column<MyObject, Anchor>(
new AnchorCell()) {
#Override
public Anchor getValue(final obj) {
Anchor link = new Anchor("link");
link.addClickHandler(new ClickHandler() {
#Override
public void onClick(ClickEvent event) {
Window.alert("clicked ");
}
});
return link;
}
};
cellTable.addColumn(linkColumn, "link column");
...
public class AnchorCell extends AbstractCell<Anchor> {
#Override
public void render(Context context, Anchor h, SafeHtmlBuilder sb) {
sb.append(SafeHtmlUtils.fromTrustedString(h.toString()));
}
}
-but clicking to link - happens nothing
and 2nd question: what's better way to open float (based on div or so, not separated browser window) pupup with text contents from that ClickHandler?
In a CellTable, you aren't adding the Anchor widget to the table. You're just adding some HTML. None of the widget's functions will work as they normally would, because the widget is not actually in the table.
You can override onBrowserEvent to get events like clicking on the cells. These events still happen because they are native to the browser and don't need the widget framework to propagate. I think this is the best way to achieve the effect you want.
I have a similar setup as you. A CellTable (now a DataGrid) with hyperlinks in it, but I want to popup an editor widget when the user clicks in the cell but not on the link-y bit. If he clicks on the link, I want the normal HTML behaviour.
Create your column using the ClickableTextCell class. What's stored in the cell? A string ID into my database of user records, which includes the name and email of the user. When I create the column, I override the render method so that the information is rendered as a email link:
Column<RowType, ColumnType> emailColumn = new Column<RowType, ColumnType>(new ClickableTextCell()){
#Override
public void render(Context context, T object, SafeHtmlBuilder sb) {
/* Code that pulls the value in this column at this row, uses
* it to look up the name and the email, then does sb.appendX
* to build up the "<a href='emaillink'>name</a>" SafeHtml
* construction.
*/
}
};
Actually, I have a subclass of Column, but you get the idea.
Voila, an active HTML link on your page, but a clickable text cell underneath. I found this a lot easier than dealing with browser events.
I use the same structure for many of my cells. ClickableTextCells underneath, and type-specific rendering code to present it to the user in the format expected. In particular, we have a dynamic picklist type of field -- that is, the picklist is not known until the click occurs. The standard selectionCell requires the list of picks to be established once at construction time, which is what got me to this solution. So instead of a standard SelectionCell dropdown, which wouldn't work anyway without some serious work**, I use this technique. When the ClickableTextCell fires, I have set the FieldUpdater to construct a popup with a DataGrid in it, this DataGrid listing the current set of legal values for this selection (as determined by the current state of the database). When the user makes his selection and hits the Save button, the popup closes, the middleware is called to update his choice, the updated row data is returned via that RPC call, the data returned being used to update the internal client-side database, which triggers an update of all the ListDataProviders driving the DataGrids, which automatically updates the main DataGrid (and any other DataGrid potentially visible on the screen).
Actually, my solution has extended the ClickableTextCell into a DoubleClickableTextCell so that you need to double-click to activate the editor. Not required, of course, but it allows for the user to idly click around the grid without popups exploding in front of him.
** Besides the dynamic aspect, this dynamic selections can be very long lists, so a dropdown is a poor choice. Better to present a DataGrid that the user can scroll through, search, filter, and so on.