BottomSheetDialogFragment
my stack at this point is this :
mainactivity
List1(a selector fragment , navigation start)
card (a detail fragment, navigation destination)
list2 (a selector fragment, navigation destination)
YesNoDialog (a BottomSheetDialogFragment fragment)
list1, card and list2 are in a navigation graph
i implemented the interface in the list2 fragment and am trying to callback to the list2 to the YesNoDialog.
no matter which technique is used (onAttach onViewCreated onClick in dialog, there is not yesNoListener instantiated
try{
Log.d(QuestionGroupList.TAG, parentFragmentManager.findFragmentByTag(QuestionGroupList.TAG)?.tag + "tag")
yesNoListener = (parentFragmentManager.findFragmentByTag(QuestionGroupList.TAG) as iYesNoDialogListener)
}
catch(e: ClassCastException){}
try{
Log.d(QuestionGroupList.TAG, (parentFragmentManager.getBackStackEntryAt(parentFragmentManager.backStackEntryCount-1).id.toString()))
yesNoListener = (parentFragmentManager.getBackStackEntryAt(parentFragmentManager.backStackEntryCount-1) as iYesNoDialogListener)
}
catch(e: ClassCastException){}
try{
Log.d(QuestionGroupList.TAG, targetFragment?.tag +"tag")
yesNoListener = targetFragment as iYesNoDialogListener
}
catch(e: ClassCastException){}
try{
Log.d(QuestionGroupList.TAG, context?.toString() +"tag")
yesNoListener = context as iYesNoDialogListener
}
catch(e: ClassCastException){}
}
yesNoListener.onFinishYesNoDialog(true)
Related
Coordinator pattern is an old topic with many libraries trying to solve it and I am learning it in simple example app.
My current set up is 3 rootViewControlers: LoadingStateCoordinator, WelcomeCoordinator, TabBarCoordinator but missing connection between UIKit and coordinators. I am trying to implement it with a UINavigationController but the button is not being called. I need a way to connect to back button and a reusable coordinator that I could push to and dellocate accordingly (that is without RxSwift).*Set up Welcome screen as the parent/main navigation and always be able to come back to it.**
So after user selects a form from modal view (vertical flow) presented I show on a push a TabBarCoordinator (horizontal). All viewControllers have empty.storyboard, UIViewController and Coordinator exept the TabBar.Here I only have a coordinator due to the set up of child tab coordinators and the magic needs to happen on a back button tap. Currenly this only being called when user comes from LoadingStateCoordinator. There I need to send the user back to the Welcome screen so they can change the onboarding set up. Here is the first code for LoadingStateCoordinator:
final class LoadingStateCoordinator: NSObject, Coordinator {
*// MARK: - Inputs required*
var childCoordinators: [Coordinator]
var presenter: UINavigationController
private let window: UIWindow
*// MARK: - Initialization*
init(window: UIWindow) {
self.window = window
childCoordinators = []
presenter = UINavigationController()
}
*// MARK: - Coordinator*
func start() {
let controller: LoadingStateViewController = LoadingStateViewController.instantiate()
window.rootViewController = controller
controller.delegate = self
}
}
*// MARK: - LoadingViewControllerDelegate*
extension LoadingStateCoordinator : LoadingViewControllerDelegate {
func performScreenSwitch() {
if UserDefaults.standard.userWasHere == false {
let tabCoordinator: TabBarCoordinator = TabBarCoordinator(window: window, tabBarController: UITabBarController())
window.rootViewController = presenter
addChildCoordinator(tabCoordinator)
tabCoordinator.start()
presenter.pushViewController(tabCoordinator.tabBarController!, animated: true)
} else {
let welcomeCoordinator = WelcomeCoordinator(window: window, presenter: presenter)
window.rootViewController = welcomeCoordinator.presenter
addChildCoordinator(welcomeCoordinator)
welcomeCoordinator.start()
}
}
}
And here is the TabBarCoordinator that need to perform back to Welcome screen action. When I present popToRootfunction it pushes the Welcome screen but all the button there are disbled. I guess to be retain cycle issue. Do I need funadametally another set up? Is there a way to popToRoot(vc) in this set up? What I tryed ended with runtime error "poping to non existing controller".
TabBarCoordinator code that need to perform this:
final class TabBarCoordinator: NSObject, Coordinator {
internal var presenter: UINavigationController
internal var tabBarController: UITabBarController?
internal var childCoordinators: [Coordinator]
var parentCoordinator: LoadingStateCoordinator?
lazy var leftBtn: UIBarButtonItem = {
let button = UIButton(type: .system)
button.setImage(UIImage(systemName: "arrow.turn.up.left"), for: .normal)
button.sizeToFit()
button.addTarget(self,
action: #selector(self.popToRoot(_:)),
for: .touchUpInside)
return UIBarButtonItem(customView: button)
}()
init(window: UIWindow, tabBarController: UITabBarController) {
self.tabBarController = tabBarController
childCoordinators = []
self.presenter = UINavigationController()
}
func start() {
performGetTabBar()
self.presenter.delegate = self
}
private func performGetTabBar() {
let coordinators: [Coordinator] = generateTabCoordinators()
coordinators.forEach({ coordinator in
coordinator.start()
addChildCoordinator(coordinator)
})
let presenters: [UIViewController] = coordinators.map({ coordinator -> UIViewController in
return coordinator.presenter
})
leftBtn.style = .plain
tabBarController?.navigationItem.leftBarButtonItem = leftBtn
tabBarController?.setViewControllers(presenters, animated: false)
selectTab(type: SurfTripCoordinator.self)
}
private func generateTabCoordinators() -> [Coordinator] {
let calculatorCoordinator: CalculatorCoordinator = CalculatorCoordinator(presenter: UINavigationController())
let tripCoordinator: SurfTripCoordinator = SurfTripCoordinator(presenter: UINavigationController())
let sellCoordinator: SavedTripsCoordinator = SavedTripsCoordinator(presenter: UINavigationController())
return [calculatorCoordinator, tripCoordinator, sellCoordinator]
}
*//this is not being called when coming from vertical flow*
#objc func popToRoot(_ sender: UIBarButtonItem) {
let storyboard: UIStoryboard = UIStoryboard(name: Constants.Storyboards.welcomeViewCoordinator, bundle: nil)
let controller: WelcomeViewController = WelcomeViewController.instantiate(from: storyboard)
tabBarController?.navigationController?.pushViewController(controller, animated: true)
}
}
extension TabBarCoordinator: UINavigationControllerDelegate {
func selectTab<T: Coordinator>(type _: T.Type) {
guard let index = childCoordinators.firstIndex(where: { coordinator in
coordinator is T
}) else {
return
}
tabBarController?.selectedIndex = index
}
}
and here is the current WelcomeCoordinator set up
class WelcomeCoordinator: NSObject, Coordinator {
internal var presenter: UINavigationController
var childCoordinators: [Coordinator]
init(window: UIWindow, presenter: UINavigationController) {
self.presenter = presenter
childCoordinators = []
}
func start() {
let storyboard: UIStoryboard = UIStoryboard(name: Constants.Storyboards.welcomeViewCoordinator, bundle: nil)
let controller: WelcomeViewController = WelcomeViewController.instantiate(from: storyboard)
controller.delegate = self
presenter.pushViewController(controller, animated: true)
}
}
extension WelcomeCoordinator : WelcomeViewControllerDelegate {
func performAddLevel() {
let addLevelCoordinator: AddLevelViewCoordinator = AddLevelViewCoordinator(presenter: UINavigationController())
addLevelCoordinator.start()
addChildCoordinator(addLevelCoordinator)
addLevelCoordinator.presenter.modalPresentationStyle = .fullScreen
presenter.present(addLevelCoordinator.presenter, animated: true, completion: nil)
}
}
sorry for the long post I wish there was more reaktive native way to do this...
Ok so I found partlly a solution the back button solution for my case: not using pushViewController or show because it comes with back button. presenter.setViewControllers([tabCoordinator.tabBarController!], animated: true) and there setting the navBar to hidden. I made my own navItem button to navigate to rootVC. Next step to allocate and remove all child tabBar coordinators on back tap recognized.
I have a treeview of hierarchical data that represents elements retrieved from a database. I would like to be able to move child (leaf) nodes from one parent to another and rearrange the sequence of leaf nodes within a parent via drag-and-drop, finally updating the database with the results of the move operations.
Right now I can drop one of the leaf nodes onto a parent node which allows me to add the child to the parent. However, I don't really see how to drop a leaf node between two other leaf nodes, either in the same parent or in a different parent node.
I would like to be able to do something like the following. Starting with a tree that looks like this:
Root
|
+-+-P1
| |
| +--L1a
| +--L1b
|
+-+-P2
|
+--L2a
+--L2b
For example, I would like to be able to select L2a and drag it up and drop it between L1a and L1b. Or before L1a, or after L1b. Having done that I would like to drag the child nodes of P1 around and rearrange them via DND.
Part of this would be to provide an indication of the drop location. For example, a line between L1a and L1b if you have the cursor positioned 'between' these nodes.
Is this possible? I don't see any examples of this anywhere.
One other thing I am seeing is that the effect of DND doesn't remove the leaf node from its original location even though in the setOnDragDetected method call for my cells I call cell.startDragAndDrop(TransferMode.MOVE). How can I get that to work?
Edit 9/1/17
I figured out the last part of not removing the leaf node.
Here is the code I am using to test this process out. I have an interface IStoryItem that is the (empty) interface implemented by two subclasses, Story and Part (just to create a hierarchy to test with). The Story class has title (String) and parts (Part[]) fields. The Part class has title (String) and partNumber (int) fields. I have a Utils class that creates an array of Story objects to populate my TreeView instance.
Here is my controller class. It's a bit long and in need of cleanup but shows what I have tried so far.
public class Controller {
public TreeView<IStoryItem> tv;
private final DataFormat objectDataFormat = new DataFormat("application/x-java-serialized-object");
class StoryRoot implements IStoryItem { }
TreeItem<IStoryItem> rootItem;
#FXML
public void initialize() {
StoryRoot storyRoot = new StoryRoot();
rootItem = new TreeItem<>(storyRoot);
tv.setRoot(rootItem);
// For Drag and Drop:
// - rootItem can only accept Story nodes.
// - Story nodes can only accept Part nodes.
// - Part nodes can't accept any other nodes.
tv.setCellFactory(new Callback<TreeView<IStoryItem>, TreeCell<IStoryItem>>() {
#Override
public TreeCell<IStoryItem> call(TreeView<IStoryItem> siTreeView) {
TreeCell<IStoryItem> cell = new TreeCell<IStoryItem>() {
#Override
protected void updateItem(IStoryItem item, boolean empty) {
super.updateItem(item, empty);
if (item != null) { setText(item.toString()); }
}
};
// The following calls are as outlined in:
// https://docs.oracle.com/javase/8/javafx/events-tutorial/drag-drop.htm#CHDJFJDH
cell.setOnDragDetected((MouseEvent event) -> {
// Don't drag Story nodes.
if (cell.getItem() instanceof Story) return;
// drag was detected, start a drag-and-drop gesture
// allow Move transfer mode only
Dragboard db = cell.startDragAndDrop(TransferMode.MOVE);
// Put the Part on the dragboard
// From: https://stackoverflow.com/a/30916660/780350
ClipboardContent content = new ClipboardContent();
content.put(objectDataFormat, cell.getItem());
db.setContent(content);
event.consume();
});
cell.setOnDragDropped((DragEvent event) -> {
try {
Dragboard db = event.getDragboard();
boolean success = false;
if (db.hasContent(objectDataFormat)) {
Part droppedPart = (Part)db.getContent(objectDataFormat);
IStoryItem targetStoryItem = cell.getItem();
// Question: How to handle drops between leaf items or
// before the initial leaf or after the final leaf.
if (targetStoryItem instanceof Story) {
Story story = (Story) targetStoryItem;
updateStoryWith(droppedPart, story);
addPartTo(cell.getTreeItem(), droppedPart);
success = true;
}
}
event.setDropCompleted(success);
event.consume();
} catch (Exception e) {
System.out.println(e.getMessage());
}
});
cell.setOnDragDone((DragEvent event) -> {
/*
* the drag and drop gesture ended
* if the data was successfully moved, clear it
*/
if (event.getTransferMode() == TransferMode.MOVE) {
// TODO: remove the part that got moved.
IStoryItem item = cell.getItem();
TreeItem<IStoryItem> ti = cell.getTreeItem();
TreeItem<IStoryItem> pti = ti.getParent();
pti.getChildren().remove(ti);
IStoryItem psi = pti.getValue();
boolean removed = removePartFrom(psi, item);
}
event.consume();
});
return cell;
};
});
tv.getSelectionModel()
.selectedItemProperty()
.addListener((observable, oldValue, newValue) -> inspectObject(newValue.getValue()));;
Story[] stories = Utils.createStories();
for (Story s: stories) {
addStoryToTree(s);
}
}
private void updateStoryWith(Part droppedPart, Story story) {
List<Part> partsList = new ArrayList<>(Arrays.asList(story.parts));
partsList.add(droppedPart);
Part [] newParts = (Part[])partsList.toArray(new Part[partsList.size()]);
int idx = 1;
for (Part part : newParts) {
part.partnumber = idx++;
}
story.parts = newParts;
}
private void inspectObject(Object o) {
if (!(o instanceof IStoryItem)) {
System.out.println(o.getClass().toString());
} else if (o instanceof Story) {
Story s = (Story)o;
System.out.println("Story: " + s.toString());
} else if (o instanceof Part) {
Part s = (Part)o;
System.out.println("Part: " + s.toString());
}
}
void addStoryToTree(Story story) {
if (story.parts.length == 0) return;
TreeItem<IStoryItem> item = new TreeItem<>(story);
rootItem.getChildren().add(item);
for (Part part : story.parts) {
addPartTo(item, part);
}
}
void addPartTo(TreeItem<IStoryItem> storyItem, Part part) {
TreeItem<IStoryItem> partItem = new TreeItem<>(part);
storyItem.getChildren().add(partItem);
}
boolean removePartFrom(IStoryItem si, IStoryItem pi) {
if (!(si instanceof Story)) return false;
if (!(pi instanceof Part)) return false;
Story story = (Story) si;
Part part = (Part) pi;
List<Part> plist = new LinkedList<>(Arrays.asList(story.parts));
if (!plist.contains(part)) return false;
boolean removed = plist.remove(part);
story.parts = plist.toArray(new Part[plist.size()]);
return removed;
}
}
boolean display=driver.findElement(By.cssSelector("input#txtkeyword[placeholder='Job title']")).isDisplayed();=false
boolean select=driver.findElement(By.cssSelector("input#txtkeyword[placeholder='Job title']")).isSelected();=false
boolean enable=driver.findElement(By.cssSelector("input#txtkeyword[placeholder='Job title']")).isEnabled();=true
There are many reasons for an element to not be visible. It could be covered by a pop-up, the DOM could still be loading, you may have to scroll it into view.
For the first instance, take a screenshot on failure and see if the element is covered. I use the following for cucumber-jvm. You can google how to do it for whatever framework you are using.
#After
public void captureScreenshotOnFailure(Scenario scenario){
try {
if (scenario.isFailed() && driver !=null) {
System.out.println("***>> Scenario failed: "+scenario.getStatus());
try {
driver augemented = new Augmenter().augment(webDriver);
byte[] screenshot = ((TakesScreenshot) augemented).getScreenshotAs(OutputType.BYTES);
scenario.embed(screenshot, "image/png");
} catch (Exception e) {
e.printStackTrace();
}
}
} finally {
if (driver !=null) {
driver.quit();
}
}
}
For the DOM not finished loading, wait for it.
Wait<driver> wait_element = new WebDriverWait(driver, 80);
WebElement jobTitleElement = wait_element.until(
ExpectedConditions.visibilityOfElementLocated(By.cssSelector(
"input#txtkeyword[placeholder='Job title']")));
If the wait fails then the element just isn't there.
If the wait succeeds then scroll to the element. If the element was a button you could click() it after the moveToElement(). It is not but including the code just to be complete.
Actions action = new Actions(driver);
action.moveToElement(jobTitleElement).click().build().perform();
I create Android Project in Xamarin plugin for Visual Studio Community 2015. I have in my application 4 fragments and I switch in them by ViewPager which is navigated in ActionBar. In second and third tab, there are few fields (for second tab -> Name, Surname, Mail, Phone and for third -> description field). These fields are EditText. On last fragment there are fields (TextView) and I need to pass data from 2nd, 3rd to 4th fragment. These data is only string value.
I try to use this code:
public void OnTabSelected(ActionBar.Tab tab, FragmentTransaction ft)
{
viewPager.CurrentItem = tab.Position;
if (tab.Position == 0)
{
actionBar.SetTitle(Resource.String.GalleryTab);
} else if (tab.Position == 1)
{
actionBar.SetTitle(Resource.String.DescriptionTab);
} else if (tab.Position == 2)
{
actionBar.SetTitle(Resource.String.ContactInfoTab);
} else if (tab.Position == 3)
{
actionBar.SetTitle(Resource.String.SummaryTab);
nameContact.TextChanged += (object sender, Android.Text.TextChangedEventArgs e) =>
{
nameSummary.Text = e.Text.ToString();
};
}
nameContact and nameSummary are properly initialized.
var nameContact = FindViewById<EditText>(Resource.Id.nameContactText);
var surnameContact = FindViewById<EditText>(Resource.Id.surnameContactText);
var nameSummary = FindViewById<TextView>(Resource.Id.nameSummary);
var surnameSummary = FindViewById<TextView>(Resource.Id.surnameSummary);
Can someone explain me how to send data between fragments. Thank you for answer.
UPDATE
I just do something like this.
var nameContact = FindViewById<EditText>(Resource.Id.nameContactText);
nameContactText = nameContact.Text.ToString();
var nameContactSummary = FindViewById<TextView>(Resource.Id.nameSummary);
nameContactSummary.Text = nameContactText;
A way to do it is to store data you need to transfer in parent activity (assuming that both fragments are hosted in the same activity) so every fragment will have access to this data using (Activity as yourActivityType).YourPropertyName in every fragment.
More details on Communicating with the Activity from Fragment can be found here:http://developer.android.com/guide/components/fragments.html#CommunicatingWithActivity
I'm outside the UI and wish to display a wait cursor while stuff is
happening and using this basic pattern:
on UI - primaryStage.scene.cursor = Cursor.WAIT
try {
do stuff off UI...
} finally {
on UI - primaryStage.scene.cursor = Cursor.DEFAULT
}
While running I can start another process which completes quickly and the Cursor is restored before the first task completes.
I don't mind "waiting" while the first task completes, but I don't think this means doing the work on the UI thread?
Is there any built in solution for this pattern provided in javafx?
My tab contains 2 Combo Box. When I hit the 2nd Combo Box drop down, a WAIT cursor sometimes appears over the list even though the Cursor is currently DEFAULT state. If I move the mouse pointer outside/back on the list the cursor is correctly displayed as Default. Would this be a separate issue or somehow related?
VIEW
label 'From'
comboBox(items: bind(model.wcomboFromItemsProperty()), value: bind(model.wcomboFromProperty()), selectFromAction)
label 'To'
comboBox(items: bind(model.wcomboFromItemsProperty()), value: bind(model.wcomboToProperty()), selectToAction)
MODEL
#FXObservable ListElement wcomboFrom = new ListElement()
#FXObservable ListElement wcomboTo = new ListElement()
#FXObservable List wcomboFromItems = FXCollections.observableArrayList()
#FXObservable List wcomboToItems = FXCollections.observableArrayList()
final ObjectProperty<Cursor> CURSOR_DEFAULT = new SimpleObjectProperty<>(Cursor.DEFAULT)
final ObjectProperty<Cursor> CURSOR_WAIT = new SimpleObjectProperty<>(Cursor.WAIT)
CONTROLLER
//lifecycle
void onReadyStart(GriffonApplication application) {
loadWindowData()
}
// both combo boxes contain the same items
protected void loadWindowData() {
def list = [new ListElement(textValue: '')]
list.addAll dataService.getData().collect {
new ListElement(textValue: it.name, objectValue: it)
}
runInsideUIAsync {
model.wcomboFromItems.addAll(list)
model.wcomboToItems.addAll(list)
}
}
void selectFrom() {
performAction {
gcListFrom = getControlList(model.wcomboFrom.objectValue)
setTreeItems(model.wtreeGcFrom, gcListFrom, model.wcomboFrom)
setTreeItems(model.wtreeGcTo, gcListTo, model.wcomboTo)
}
}
void selectTo() {
performAction {
gcListTo = getControlList(model.wcomboTo.objectValue)
setTreeItems(model.wtreeGcTo, gcListTo, model.wcomboTo)
}
}
def performAction = {c ->
Task<Void> t = new Task() {
#Override protected Void call() {
println "Running closure " + isUIThread()
c.call()
}
}
runInsideUISync {
application.primaryStage.scene.cursorProperty().bind(Bindings.when(t.runningProperty())
.then(model.CURSOR_WAIT).otherwise(model.CURSOR_DEFAULT))
}
runOutsideUI(t)
}
OTHER
#EqualsAndHashCode(includes = 'textValue')
class ListElement implements Serializable {
String textValue = ""
Serializable objectValue // Serializable object from business model
#Override
String toString() {
textValue
}
}
The Griffon framework automatically invokes the onAction controller events outside the UI thread. GroovyFX contains some magic which adds an "onSelect" action bound to selectionModel.selectedItemProperty i.e.
class GroovyFXEnhancer {
static void enhanceClasses() {
...
ComboBox.metaClass {
cellFactory << { Closure closure -> delegate.setCellFactory(closure as Callback)}
onSelect << { Closure closure ->
delegate.selectionModel.selectedItemProperty().addListener(closure as ChangeListener);
}
...
}
}
Is there any built in solution for this pattern provided in javafx?
I would advice you to use the built in Task ;)
It has predefined methods to handle everything you need.
private Task<Void> backgroundTask = new Task() {
#Override
protected Void call() throws Exception {
// Something to do on background thread ;
return null;
}
};
It has a runningProperty(), which can bind to the cursorProperty() of the scene.
You can create two ObjectProperty<Cursor> containing Cursor.DEFAULT and CURSOR.WAIT.
final ObjectProperty<Cursor> CURSOR_DEFAULT = new SimpleObjectProperty<>(Cursor.DEFAULT);
final ObjectProperty<Cursor> CURSOR_WAIT = new SimpleObjectProperty<>(Cursor.WAIT);
Then you can bind them to the task :
scene.cursorProperty().bind(Bindings.when(backgroundTask.runningProperty())
.then(CURSOR_WAIT).otherwise(CURSOR_DEFAULT));
Would this be a separate issue or somehow related?
If your action on the ComboBox is somehow invoking the background thread, then it might be related, else it is difficult to comment.
You can also use the griffon-tasks-plugin http://griffon-plugins.github.io/griffon-tasks-plugin/
This plugin delivers and UI toolkit agnostik SwingWorker-like API for executing tasks in a background thread.