I am new to vaadin and have a databinding problem. I have posted allready in the vaadin forum, but no answer up to now.
if you answer here, I will of course reward it anyway.
https://vaadin.com/forum/-/message_boards/view_message/1057226
thanks in advance.
greets,
Andreas
Additional information: I tried allready to iterate over the items in the container, after pressing a save button. After deleting all original elements in the model collection, and adding copies from the container, the GUI breaks. Some other GUI elements do not respond anymore.
I have personally never used ListSelect, but I found this from the API docs:
This is a simple list select without, for instance, support for new items, lazyloading, and other advanced features.
I'd recommend BeanItemContainer. You can use it like this:
// Create a list of Strings
List<String> strings = new ArrayList<String>();
strings.add("Hello");
// Create a BeanItemContainer and include strings list
final BeanItemContainer<String> container = new BeanItemContainer<String>(strings);
container.addBean("World");
// Create a ListSelect and make BeanItemContainer its data container
ListSelect select = new ListSelect("", container);
// Create a button that adds "!" to the list
Button button = new Button("Add to list", new Button.ClickListener() {
public void buttonClick(ClickEvent event) {
container.addBean("!");
}
}
// Add the components to a layout
myLayout.addComponent(button);
myLayout.addComponent(select);
The downside (or benefit, it depends :) of this is that you can't add duplicate entries to a BeanItemContainer. In the example above the exclamation mark gets only added once.
You can get a Collection of Strings by calling:
Collection<String> strings = container.getItemIds();
If you need to support duplicate entries, take a look at IndexedContainer. With IndexedContainer you can add a String property by calling myIndexedContainer.addContainerProperty("caption", String.class, ""); and give each Item a unique itemId (or let the container generate the id's automatically).
Im not sure I understand your problem but I belive that it might be that you haven't told the controller to repaint. You do this be setting the datasource like this after the save event has occured.
listSelect.setContainerDataSource(listSelect.getContainerDataSource());
Related
I've created a lookup with two columns, first one containing and integer which works just fine but the second one has a long name and this is where the problem arises. Users should horizontally scroll in order to check the entire string and even in that case, the column's width is not big enough to display the whole data.
I've found this :
Adjusting column width on form control lookup
But i don't understand exactly where and what to add.
I am not sure but maybe I have to add the fact that this lookup is used on a menu item which points to an SSRS report, in the parameters section.
Update 1:
I got it working with a lookup form called like this :
Args args;
FormRun formRun;
;
args = new Args();
args.name(formstr(LookupOMOperatingUnit));
args.caller(_control);
formRun = classfactory.formRunClass(args);
formRun.init();
_control.performFormLookup(formRun);
and in the init method of this form i added:
public void init()
{
super();
element.selectMode(OMOperatingUnit_OMOperatingUnitNumber);
}
meaning the field i really need.
I am not sure i understand the mechanism completely but it seems it knows how to return this exact field to the DialogField from where it really started.
In order to make it look like a lookup, i have kept the style of the Design as Auto but changed the WindowType to Popup, HideToolBar to Yes and Frame to Border.
Probably the best route is do a custom lookup and change the extended data type of the key field to reflect that. In this way the change is reflected in all places. See form FiscalCalendarYearLookup and EDT FiscalYearName as an example of that.
If you only need to change a single place, the easy option is to override performFormLookup on the calling form. You should also override the DisplayLength property of the extended data type of the long field.
public void performFormLookup(FormRun _form, FormStringControl _formControl)
{
FormGridControl grid = _form.control(_form.controlId('grid'));
grid.autoSizeColumns(false);
super(_form,_formControl);
}
This will not help you unless you have a form, which may not be the case in this report scenario.
Starting in AX 2009 the kernel by default auto-updates the control sizes based on actual record content. This was a cause of much frustration as the sizes was small when there was no records and these sizes were saved! Also the performance of the auto-update was initially bad in some situations. As an afterthought the grid control autoSizeColumns method was provided but it was unfortunately never exposed as a property.
you can extends the sysTableLookup class and override the buildFromGridDesign method to set the grid control width.
protected void buildFormGridDesign(FormBuildGridControl _formBuildGridControl)
{
if (gridWidth > 0)
{
_formBuildGridControl.allowEdit(true);
_formBuildGridControl.showRowLabels(false);
_formBuildGridControl.widthMode(2);
_formBuildGridControl.width(gridWidth);
}
else
{
super(_formBuildGridControl);
}
}
I am using Flex Action Script.I am facing issue with static array. I have one static array used by two tabs.First time when I login the data is coming fine but if I am going to another tab and coming back to first tab then data from 2nd tab is appended into it and displayed in first.How to get rid of this problem?
//I'm assuming you have a var like this:
public static var sharedArray:Array;
//Then, assuming you're using a Spark TabBar, make sure you have a "change" listener defined for it, and make sure it includes the following code:
public function onTabChange(event:IndexChangeEvent):void {
sharedArray = [];
}
I'm writing a JFace dialog, and I'd like to use databing to a model object.
Looking at code I can see that there are times when I find a PojoProperties used to build the binding, while other time it is used a PojoObservables.
Looking at the Javadoc I can read:
PojoObservables: A factory for creating observable objects for POJOs (plain old java objects) that conform to idea of an object with getters and setters but does not provide property change events on change.
PojoProperties: A factory for creating properties for POJOs (plain old Java objects) that conform to idea of an object with getters and setters but does not provide property change events on change.
The same question applies to the difference that exists between BeansObservables and BeansProperties
The (obvious) difference sems to be that the observable allows to observe objects and the properties allows to observe properties, but since a Pojo has a getter and a setter for its data, what is the difference between them? And which of them should I choose for my dialog?
Here follows a code excerpt:
The POJO:
public class DataObject {
private String m_value;
public String getValue() {
return m_value;
}
public void setValue(String i_value) {
m_value = i_value;
}
}
The DIALOG (relevant part):
#Override
protected Control createDialogArea(Composite parent) {
Composite container = (Composite) super.createDialogArea(parent);
m_combo = new Combo(container, SWT.BORDER);
m_comboViewer = new ComboViewer(container, SWT.NONE);
}
The BINDING (relevant part):
// using PojoObservable
IObservableValue observeValue = PojoObservables.observeValue(m_dataObject, "value");
IObservableValue observeWidget = SWTObservables.observeSelection(m_combo);
// using PojoProperties
IObservableValue observeValue = PojoProperties.value("value").observe(m_dataObject);
IObservableValue observeWidget = ViewerProperties.singleSelection().observe(m_comboViewer);
I understand that one time I'm using a combo and another I'm using a ComboViewer, but I can get the combo from the viewer and bind the other way if I need...
Also, can I mix the two, for example use the observeValue with the ViewerProperties?
IObservableValue observeValue = PojoObservables.observeValue(m_dataObject, "value");
IObservableValue observeWidget = ViewerProperties.singleSelection().observe(m_comboViewer);
I am playing around a little with JFace viewers (especially ComboViewer) & databinding and discovered that if I use
SWTObservables.observeSelection(comboViewer.getCombo());
then databinding is not working correctly.
However, if I use
ViewersObservables.observeSingleSelection(comboViewer);
Then everything is working as expected.
Maybe this is a special for my case, so to get it a better overview I'll describe my set up in following paragraph.
I have modelObject with field named selectedEntity and entities and bind this ComboViewer to the modelObject.
I want to display all "entities" in model object, if I add any entity to the modelObject.entities collection then I want to this entity be added to combo automatically.
If user selects some item in combo I want to modelObject.selectedEntity be set automatically.
If I set modelObject.selectedEntity I want to combo selection be set automatically.
Source code can be found at: https://gist.github.com/3938502
Since Eclipse Mars, PojoObservables is deprecated in favor of PojoProperties and BeansObservables is deprecated in favor of BeanProperties so the answer to which one should be used has now become evident.
I'm facing a problem with a view-based NSTableView running on 10.8 (target is 10.7, but I think this is not relevant).
I'm using an NSTableView, and I get content values for my custom NSTableCellView through bindings. I use the obejctValue of the NSTableCellView to get my data.
I added a button to my cell, and I'd like it to trigger some action when clicked. So far I have only been able to trigger an action within the custom NSTableCellView's subclass.
I can get the row that was clicked like this, using the chain:
NSButton *myButton = (NSButton*)sender;
NSTableView *myView = (NSTableView*)myButton.superview.superview.superview;
NSInteger rowClicked = [myView rowForView:myButton.superview];
From there I don't know how to reach my App Delegate or controller where the action is defined.
As I am using cocoa bindings, I do not have a delegate on the NSTableView that I could use to trigger my action.
Do you have any idea how I could talked back to controller ?
Many thanks in advance!
Although you are using bindings you can still set your controller as the delegate for your tableview in the interface builder.
I see that you already are able to access the table view from inside your cell. The next task must be simple, just set the table view delegate as the target for your button's action.
Thanks for your question, I also will be triggering an action from a button on a NSTableView. Your question helped to put me on the correct path.
First to address the your solution to finding which row number my NSTableView is on. I was able to find it without knowing the button, in my custom NSTableView I installed the following as a first attempt:
- (NSInteger)myRowNumber
{
return [(NSTableView*)self.superview.superview rowForView:self];
}
this works fine, however it is less than robust. It only works if you already know specifically how deep you are in the view hierarchy. A more robust and universal solution is:
- (NSInteger)myRowNumber
{
NSTableView* tableView = nil;
NSView* mySuperview = self;
do
{
NSView* nextSuper = mySuperview.superview;
if (nextSuper == nil)
{
NSException *exception =
[NSException exceptionWithName:#"NSTableView not found."
reason:[NSString stringWithFormat:#"%# search went too deep.",
NSStringFromSelector(_cmd)] userInfo:nil];
#throw exception;
}
if ([nextSuper isKindOfClass:[NSTableView class]])
tableView = (NSTableView*)nextSuper;
else
mySuperview = mySuperview.superview;
} while (tableView == nil);
return [tableView rowForView:self];
}
this not only works at the NSTableView level, but works with anything installed at any level above it, no matter how complex the view hierarchy.
As to the unanswered part of your question, I established an IBOutlet in my class and using interface builder tied if to my files owner (in my case my document class). Once I had a reference to the class I was sending my message to, and the row number, I call the function. In my case the call required that I pass the row number it originates from.
[self.myDoc doSomethingToRow:self.myRowNumber];
I tested this and it works at various levels of the view hierarchy above NSTableView. And it functions without having to have the row selected first (which appears to be assumed in Apples documentation).
Regards, George Lawrence Storm, Maltby, Washington, USA
Use rowForView: and the responder chain
To respond to a control's action embedded within an NSTableCellView, the control should issue the action to the First Responder. Alternatively, File Owner is possible but this is more tightly coupled.
Use rowForView: within the action method to determine which row's control issued the action:
- (IBAction)revealInFinder:(id)sender {
NSInteger row = [self.tableView rowForView:sender];
...
}
The action is implemented within any of the responder chain classes. Most likely, this will be your subclassed NSWindowController instance. The responder could also be the application delegate; assuming the delegate has a means to talk to the NSTableView.
See Apple's example TableViewPlayground: Using View-Based NSTableView and NSOutlineView to see this in action.
Suhas answer helped me.
func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
if let cell = tableView.makeView(withIdentifier: NSUserInterfaceItemIdentifier(rawValue: "EDIT_CELL_VIEW"), owner: self) as? SymbolManagerCell {
if let editButton = cell.subviews[0] as? NSButton {
editButton.target = cell // this is required to trigger action
}
return cell
}
return nil
}
I need to add an additional field to InventJournalTrans, that after posting will show up in the InventTrans table. The field is a reference column to a record in another table. What method(s) do I need to modify to make this behavior happen?
Currently, I have already added the fields to both tables and modified the Form to allow the user to enter and save the new field. I just can't seem to find the bottom of the rabbit hole on where the actual posting to InventTrans is occurring.
Ideally, it should just be a:
inventTrans.ReasonRefRecId = inventJournalTrans.ReasonRefRecId;
assignment statement before the
inventTrans.insert();
call. Anybody have a clue on where this is at?
The link above does contain the solution -- I have included the code from that page in case that page disappears or no longer becomes available. Thanks to gl00mie for answering on that site and providing this answer.
You should create a new InventMovement method like this:
public MyNewFieldType myNewField()
{
return MyNewFieldType::DefaultValue; // suppose your new field is an enum
}
Then modify \Classes\InventMovement\initInventTransFromBuffer
void initInventTransFromBuffer(InventTrans _inventTrans, InventMovement _movement_orig)
{
// ... append this line to the end of whatever else is already in this method
_inventTrans.MyNewField = this.myNewField();
}
And finally overload the new method in the InventMov_Journal class:
public MyNewFieldType myNewField()
{
return inventJournalTrans.MyNewField;
}