Hi: I have in a wxFrame a menubar with this wxMenus: File|Edit|Personal. During the frame creation the wxMenu Personal has two wxMenuItems (Information and Need Help), which tells the user that must fill the form and help abou how to fill it. After the user fills the form with personal information, the menu is populated with new items: send, clear, check and remove, deleting/removing the previous ones... At this point I manage to trap the event, like this:
Bind (wxEVT_MENU_OPEN, &MyFrame::processMenuPersonal, this);
// the method
void MyFrame::processMenuPersonal (wxMenuEvent& event) {
wxMenu *menu = event.GetMenu ();
wxMenuItem *item = menu->FindItem (IDM_PERSONAL_EMPTY);
if (item) {
// here I want to dynamic add items and remove the current ones
}
}
Any ideas about how to do this?
Yes. Just append as submenu and treat it like any conditional statement. Here is a sample
void MyFrame::processMenuPersonal (wxMenuEvent& event) {
wxMenu *menu = event.GetMenu ();
wxMenu *item = menu->GetMenu(YOUR_MENU_INDEX);
menu->AppendSubMenu(item, wxT("User Items"));
if (YouConditionHere) {
item->Append(wxID_ANY, "Item 1")
item->Append(wxID_ANY, "Item 2")
item->Append(wxID_ANY, "Item 3")
}
}
Note that Items 1,2,3 are the information you want to append after processing your data (in your case deleting old entries)
Related
I want to control the TabPane and switch tabs with a Canvas, basically hide the tab headers and use canvas instead, the canvas displays different "Devices" and when user click on the device, the TabPane switch to show the content of that device.
fun canvasFlow_Click(mouseEvent: MouseEvent) {
val d = flowPresenter.click(mouseEvent)
if (d != null) {
flowPresenter.select(d)
logger.info("switch to ${d.position}")
tab.selectionModel.clearSelection()
tab.selectionModel.select(d.position)
}
}
Why select doesn't work? I don't see tab content changed. from log, I see "switch to 1", "switch to 2" correctly, just the tab doesn't switch! Why?
Note: this is plain javafx and might not be the exact solution in your case (hard to tell without example) - but actually I can reproduce the described behavior.
The problem seems to be calling clearSelection: TabPane with tabs should have exactly one selected tab - which is not specified. But every internal collaborator (skin, header, listener) goes to great lengths to guarantee that constraint - this assumption was wrong, in fact the skin gets confused if the selection changes to empty - the previously selected content is not removed. Might be a bug, either don't allow the selectionModel to be empty or improve the skin to cope with it (wondering how that would be supposed to look - hide the content?)
Anyway, here the solution is to not call that method before manually selecting a tab. There's no need to do so anyway, it's a SingleSelectionModel so takes care of allowing at most one item selected.
An example: un/comment the clearSelection and see how the content is not/ correctly updated with/out the call.
public class TabPaneSelection extends Application {
private Parent createContent() {
TabPane pane = new TabPane();
HBox headers = new HBox();
for (int i = 0; i < 3; i++) {
int index = i;
Tab tab = new Tab("header " + i, new Label("content " + i));
pane.getTabs().add(tab);
Button button = new Button(tab.getText());
button.setOnAction(e -> {
// do __not__ clear selection
//pane.getSelectionModel().clearSelection();
pane.getSelectionModel().select(index);
});
headers.getChildren().add(button);
}
BorderPane content = new BorderPane(pane);
content.setTop(headers);
return content;
}
#Override
public void start(Stage stage) throws Exception {
stage.setScene(new Scene(createContent(), 400, 300));
//stage.setTitle(FXUtils.fxVersion());
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
I want to make my "button 3" visible after click in "button 1" and "button 2". How can I do it?
I have not tried any code cause I have no idea how to do this :p
You can use global variables for each bt and a listener for the last btn, for example, when you click bt1 replace the original value of the variable, lets say:
bt1 = 0; now could be bt1 = 1;
you write these somewhere in your first frame o in the root, just remember to point the right timeline if you write it outside your current timeline.
Let's say you write in the first frame of the root:
bt1=0;
bt2=0;
mybt._visible = false; //here you turn it off
onEnterFrame = function(){
if (bt1 == 1 && bt2 == 1){
trace("Say it Worked");
mybt._visible = true; //and here you turn it on
delete this.onEnterFrame;
}
}
Then each button must have something like:
on (release) {
_root.bt1 = 1; // or 2, depends on what button it is
// Your Actions
}
And your invisible button must have an instance name, in this case: "mybt"
at the moment i programm a database based Chat System.
The friendlist of every User gets loadet in a TreeView after the login.
means:
After the login I request the names of the useres friends by the following Funktion,
String namesSt[] = get.getUserFriendNameByUserID(currentUserID);
To use the given Names to load them as TreeItem into my Friendlist / TreeRootItem "rootItem"
for (int counter = 0; counter < namesSt.length; counter++) {
System.out.println(namesSt[counter]);
TreeItem<String> item = new TreeItem<String> (namesSt[counter]);
item.addEventHandler(MouseEvent.MOUSE_CLICKED,handler);
rootItem.getChildren().add(item);
}
When I now add my rootItem, I see the Names in the TreeView.
But if I click on a name, the given MouseEventHandler doesn´t get called.
Further I just want to request the text of the Element which trigger the MouseEvent, so that i can submit these name to a spezial funktion.
How can i realice such an MouseEvent?
How is it possible to call it from the dynamicly created TreeItem?
Thank you for any help :)
cheerse
Tobi
TreeItems represent the data, not the UI component. So they don't generate mouse events. You need to register the mouse listener on the TreeCell. To do this, set a cell factory on the TreeView. The cell factory is a function that creates TreeCells as they are needed. Thus this will work for dynamically added tree items too.
You will need something like this:
TreeView<String> treeView ;
// ...
treeView.setCellFactory( tv -> {
TreeCell<String> cell = new TreeCell<>();
cell.textProperty().bind(cell.itemProperty());
cell.addEventHandler(MouseEvent.MOUSE_CLICKED, event -> {
if (! cell.isEmpty()) {
String value = cell.getItem();
TreeItem<String> treeItem = cell.getTreeItem(); // if needed
// process ...
}
});
return cell ;
}
I am able to build custom rows with celltablebuilder. When clicking on a particular anchor cell, I am able to build additional subrows for that row. This subrow has buttons, when clicking on the button I have do some action. I am able to add buttons with clickhandler in the subrow, but when clicking on the button nothing is happening clickhandler is not firing.
Can anybody please help.
protected void buildRowImpl(GridDTO rowValue, int absRowIndex ) {
buildRows(rowValue, absRowIndex, true);
if (showingFriends.contains(rowValue.getComponentId())) {
buildAdditonalRows( absRowIndex, gridDTO);
}
}
private void buildAdditonalRows(int index, GridDTO rowValue, ){
TableRowBuilder row = startRow();
td = row.startTD();
if(rowValue.getXpath() != null){
//td.text(rowValue.getXpath());
renderCell(td, createContext(1), cellTable.getColumn(1), rowValue);
}else{
td.text("");
}
td.endTD();
td = row.startTD();
Button button = new Button ();
button.setText("Save");
button.addClickHandler(new ClickHandler() {
#Override
public void onClick(ClickEvent event) {
Window.alert("ssss");
}
});
DivBuilder div = td.startDiv();
div.html(new afeHtmlBuilder().appendHtmlConstant(button.toString()).toSafeHtml());
div.end();
td.endTD();
row.endTR();
}
CellPreviewEvent provides subindex. You can use it to get subrow value.
Example usage :
dataGrid.addCellPreviewHandler(new CellPreviewEvent.Handler<TreeItem>() {
#Override
public void onCellPreview(final CellPreviewEvent<TreeItem> event) {
if(event.getNativeEvent().getType().equals(BrowserEvents.CLICK)){
if(event.getContext().getSubIndex()>0){
event.getValue().getChild(event.getContext().getSubIndex()-1);
}
}
}
});
Or you can provide custom CellPreviewEvent.Handler implementation with selectionMode. For more details you can look at AbstractHasData
I had a similar situation where i needed a widget inside a cell to listen for click events... What i found out is that the widget doesn't respond to events once you inserted it into a cell (In other words, only the actual HTML that makes up for the widget gets put into the cell, any kind of event handling isn't included). The work around is to add the events to the Cell (You can make a custom cell class for that particular cell-widget and override OnBrowserEvent to listen for events.)
See GWT: On adding custom widget to celltable losing events of the custom widgets for a more eloquent explanation and example code.
In my editor, I have a composite containing a label control right at the top which flashes informative message in red colour whenever the user enters erroneous inputs in any of the below lying fields. The text keeps changing dynamically depending on user's input. I am able to achieve the effect of displaying red coloured text on erroneous inputs and displaying nothing in the label for correct inputs.
But, I want that when there is no error to display in the label composite, the rest of the below fields shift up in display. And when there is error to display, the error should appear in it's place(at the top of all other fields) pushing the other fields down.
Is there a way to achieve this effect without redrawing all the controls again?
Yes, call layout (true) on the parent.
For example I have a view that has a search bar at the top who's visibility can be toggled. I have a method to create the search composite and one to remove it:
private void createNameSearchBar () {
mySearchControl = new CardSearchControl (myViewComposite, SWT.NONE);
mySearchControl.setSearchListener (this);
}
private void disposeNameSearchBar () {
mySearchControl.dispose ();
mySearchControl = null;
}
private CardSearchControl mySearchControl = null;
private Composite myViewComposite;
private boolean mySearchBarState;
To hide or show the search bar control I call this method (myViewComposite is the top level control that owns the search bar and all the other contorls):
public void setSearchBarState (boolean show) {
mySearchBarState = show;
if (myViewComposite == null || myViewComposite.isDisposed ())
return; // no work to do
if (mySearchBarState && mySearchControl == null) {
createNameSearchBar ();
mySearchControl.moveAbove (null);
myViewComposite.layout (true);
} else if (!mySearchBarState && mySearchControl != null) {
disposeNameSearchBar ();
myViewComposite.layout (true);
}
}