private Hyperlink agentProfilelink = new Hyperlink("View Profile",
clientFactory.getHistoryMapper().getToken(agentprofileplace));
public MainWidget() {
initWidget(panel);
panel.setStyleName("gwt-innerContainer");
//panel.setStyleName("main");
panel.add(agentProfilelink);
panel.add(headerWidget);
setStyleName("main-wrapper");
showAgentProfileView().addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent ce) {
Window.alert("clicked");
logger.info(clientFactory.getHistoryMapper().getToken(agentprofileplace));
String historyToken =
clientFactory.getHistoryMapper().getToken(agentprofileplace);
clientFactory.getPlaceController().goTo(new
AgentProfilePlace(historyToken));
}
});
}
This paragraph bailed me out: "Rather than using
PlaceController.goTo(), you can also create a Hyperlink containing the
history token for the new Place obtained by calling your
PlaceHistoryMapper.getToken(). When the user navigates to a new URL
(via hyperlink, back button, or bookmark), PlaceHistoryHandler catches
the ValueChangeEvent from the History object and calls your app's
PlaceHistoryMapper to turn the history token into its corresponding
Place. It then calls PlaceController.goTo() with the new Place."
Reference: http://code.google.com/webtoolkit/doc/trunk/DevGuideMvpActivitiesAndPlaces.html
Regards
On 3/26/11, Kayode Odeyemi <dreyemi@gmail.com> wrote:
> Thanks Dave. That was really helpful as it allows me to do some more
> digging. One more thing, I still don't understand why my profile
> activity is not responding to it's Place controller. The Place token
> is gotten but it doesn't trigger its activity which will call its
> corresponding Place. Here's what I mean in code:
>
> public class ListingsEntryPoint implements EntryPoint {
>
> Place home = new HomePlace();
> ClientFactory clientFactory = GWT.create(ClientFactory.class);
> Place profile = new AgentProfilePlace("profile");
>
> @Override
> public void onModuleLoad() {
>
> EventBus eventBus = clientFactory.getEventBus();
> final PlaceController placeController =
> clientFactory.getPlaceController();
> MainWidget mainwidget = clientFactory.getApp();
>
> AppPlaceHistoryMapper apphistoryMapper=
> GWT.create(AppPlaceHistoryMapper.class);
> PlaceHistoryHandler historyHandler = new
> PlaceHistoryHandler(apphistoryMapper);
> historyHandler.register(placeController, eventBus, home);
>
>
> RootPanel.get().add(mainwidget);
> // Goes to place represented on URL or default place
> historyHandler.handleCurrentHistory();
>
> mainwidget.showAgentProfileView().addClickHandler(new ClickHandler()
> {
>
> @Override
> public void onClick(ClickEvent ce) {
> String historyToken =
> clientFactory.getHistoryMapper().getToken(profile);
> placeController.goTo(profile);
> }
> });
> }
> }
>
> /* HomeView */
> public interface HomeView extends IsWidget {
>
> HasClickHandlers showAgentProfileView();
>
> interface Presenter {
> }
>
> void setPresenter(Presenter p);
> }
>
>
> /* MainWidget */
>
> public class MainWidget extends Composite implements HomeView {
>
> private final VerticalPanel panel;
> private Widget content;
> private AgentProfileView agentProfileView = new
> AgentProfileViewImpl();
> private Anchor agentProfilelink = new Anchor("View Profile");
> private HeaderWidget headerWidget = new HeaderWidget();
>
> private Presenter presenter;
>
> private Place place;
>
> public MainWidget() {
>
> panel = new VerticalPanel();
> panel.setStyleName("gwt-innerContainer");
> //panel.setStyleName("main");
> panel.add(agentProfilelink);
> panel.add(headerWidget);
> initWidget(panel);
> setStyleName("main-wrapper");
> }
>
> @Override
> public HasClickHandlers showAgentProfileView() {
> return agentProfilelink;
> }
>
> @Override
> public void setPresenter(Presenter p) {
> this.presenter = p;
> }
> }
>
> /* AgentProfileActivity */
>
> public class AgentProfileActivity extends AbstractActivity implements
> AgentProfileView.Presenter {
>
> private Logger logger =
> Logger.getLogger(AgentProfileActivity.class.getName());
>
> private MainPresenter presenter;
> private ClientFactory clientFactory;
> private EventBus eventBus;
> //Place place = GWT.create(Place.class);
>
> private String agentprofileplace;
>
> @Inject
> public AgentProfileActivity(AgentProfilePlace place, ClientFactory
> clientFactory) {
> this.clientFactory = clientFactory;
> this.agentprofileplace = place.getAgentprofileplace();
> }
>
> @Override
> public void start(AcceptsOneWidget aow, EventBus eb) {
> logger.info("starting AgentProfileActivity");
> AgentProfileView agentProfileView =
> clientFactory.getAgentProfileView();
> this.eventBus = eb;
> agentProfileView.setPresenter(this);
> aow.setWidget(agentProfileView.asWidget());
> }
>
> @Override
> public String mayStop() {
> return "Please hold on. This activity is stopping.";
> }
>
> @Override
> public void goTo(Place place) {
> clientFactory.getPlaceController().goTo(place);
> }
> }
>
> /* AgentProfilePlace */
> public class AgentProfilePlace extends Place {
>
> private String agentprofileplace;
>
> public AgentProfilePlace() {
> }
>
> public AgentProfilePlace(String token) {
> this.agentprofileplace = token;
> }
>
> public String getAgentprofileplace() {
> return agentprofileplace;
> }
>
>
>
> public static class AgentProfileTokenizer implements
> PlaceTokenizer<AgentProfilePlace> {
>
> @Override
> public AgentProfilePlace getPlace(String place) {
> return new AgentProfilePlace(place);
> }
>
> @Override
> public String getToken(AgentProfilePlace p) {
> return p.getAgentprofileplace();
> }
>
> }
> }
>
> /* AppActivityMapper */
> public class AppActivityMapper implements ActivityMapper {
>
> private ClientFactory clientFactory;
>
> public AppActivityMapper(ClientFactory clientFactory) {
> super();
> this.clientFactory = clientFactory;
> }
>
> @Override
> public Activity getActivity(Place place) {
> if(place instanceof HomePlace)
> return new HomeActivity((HomePlace) place,
> clientFactory);
> if (place instanceof AgentProfilePlace)
> return new AgentProfileActivity((AgentProfilePlace) place,
> clientFactory);
> else
> return null;
> }
> }
>
> I believe it is not necessary to have an activity for the MainWidget,
> so I have it initialized right from the application EntryPoint. I was
> expecting the AgentProfilePlace to display its widget, but that is not
> working. I think my case is similar to that of Aodhagán on this
> thread:
> https://groups.google.com/d/topic/google-web-toolkit/LtGZpCxQAVY/discussion.
> I appreciate your suggestion.
>
> Regards
> On 3/24/11, David Chandler <drfibonacci@google.com> wrote:
>> Hi Odeyemi,
>>
>> See slides 32-47 here:
>> http://www.slideshare.net/turbomanage/whats-new-in-gwt-22
>>
>> Also, this sample project has two ActivityManagers showing how the same
>> Place can be mapped in both (albeit one is null).
>> http://code.google.com/p/listwidget/
>>
>> Inline comments below...
>>
>> HTH,
>> /dmc
>>
>> On Thu, Mar 24, 2011 at 10:18 AM, Kayode Odeyemi <dreyemi@gmail.com>
>> wrote:
>>
>>> Hello,
>>>
>>> Is there any complex example on how to nest Views when using the GWT
>>> Activity and Place. For example, I have a MainWidget which acts as a
>>> parent
>>> View for all other Views that have got a Place. My question is, how can
>>> I
>>> place other Views in the MainWidget? If this is not possible, does this
>>> mean
>>> every View can outrightly be its own widget? My reason for wanting the
>>> MainWidget to house other Views is because I want the MainWidget to
>>> control
>>> the entire layout of the application, so that other Views (URL based
>>> widgets) can just go ahead and do their own specific things.
>>>
>>> From the HelloMVP, there's this line:
>>>
>>> private Place defaultPlace = new HelloPlace("World!");
>>> private SimplePanel appWidget = new SimplePanel();
>>>
>>> // Start ActivityManager for the main widget with our ActivityMapper
>>> ActivityMapper activityMapper = new AppActivityMapper(clientFactory);
>>> ActivityManager activityManager = new ActivityManager(activityMapper,
>>> eventBus);
>>> activityManager.setDisplay(appWidget);
>>>
>>> Taking this one level up, does this mean that the GoodbyeView and
>>> HelloView
>>> Views are attached to appWidget and are both visible at Place "World"?
>>>
>>
>> Each ActivityManager is responsible for its own area of the screen. Each
>> ActivityManager has its own ActivityMapper, and each can map the same
>> Place
>> to a different Activity.
>>
>>
>>> What about if I have widgets and not Views, can these widgets be
>>> attached
>>> to for example appWidget? Also, assuming I have another Place at
>>> "Heaven",
>>> with its own Views, how can I discard the widgets already showing in
>>> appWidget? Is this something the ActivityManager takes care of
>>> automatically?
>>>
>>
>> When you change Place, the new Activity(ies) start() method(s) should
>> call
>> panel.setWidget() to replace the current contents of the panel.
>> ActivityManager does not discard widgets automatically unless the new
>> Activity is null.
>>
>>
>>>
>>> One other question, I have an Hyperlink that's got a #profile token.
>>> From
>>> my understanding of Place, if I click on the Hyperlink which appends
>>> #profile to the URL, the ActivityManager should call the corresponding
>>> Place
>>> which is set at "profile". Right now this is not working for me. I have
>>> this:
>>>
>>> registerHandler(display.showAgentProfileView().addClickHandler(new
>>> ClickHandler() {
>>> @Override
>>> public void onClick(ClickEvent event) {
>>> //eventBus.fireEvent(new MainSignupEvent());
>>> getAgentProfileActivity();
>>> }
>>>
>>> public void getAgentProfileActivity() {
>>> Window.alert("getAgentProfileActivity Request is called");
>>>
>>> History.newItem("profile");
>>> History.addValueChangeHandler(this);
>>> History.fireCurrentHistoryState();
>>>
>>> // Start ActivityManager for the main widget with our
>>> ActivityMapper
>>> ActivityMapper activityMapper = new
>>> AppActivityMapper(mainp);
>>> ActivityManager activityManager = new
>>> ActivityManager(activityMapper, geventBus);
>>>
>>>
>>> activityManager.setDisplay((AcceptsOneWidget)mainp.getDisplay().getAgentProfileView().asWidget());
>>>
>>> Place agentprofile = new AgentProfilePlace("profile");
>>> PlaceController agentprofilePlaceController =
>>> mainp.getPlaceController();
>>> AgentProfilePlaceHistoryMapper agentprofilehistoryMapper=
>>> GWT.create(AgentProfilePlaceHistoryMapper.class);
>>> PlaceHistoryHandler historyHandler = new
>>> PlaceHistoryHandler(agentprofilehistoryMapper);
>>> historyHandler.register(placecontroller, geventBus,
>>> agentprofile);
>>>
>>> }
>>>
>>
>> When using Activities & Places, you don't need to call any methods on
>> History directly. Instead use historyHandler.handleCurrentHistory(). The
>> rest of the code in your getAgentProfileActivity() method should be run
>> during application setup (called from onModuleLoad, not a ClickHandler as
>> shown here). Finally, the ClickHandler should call
>> placeController.goTo(new
>> AgentProfilePlace());
>>
>>
>>>
>>>
>>> I will also like to know, can the ActivityManager be called anywhere
>>> else
>>> other than in onModuleLoad. My reason is because, since the issue of
>>> decoupling is a big factor in MVP, I tend to have my events handled in
>>> the
>>> Presenter implementing class. Please correct me if I'm wrong with the
>>> interpretation.
>>>
>>> --
>>> Odeyemi 'Kayode O.
>>>
>>> B.Sc(Hons) Econs, Application Developer & Systems Engineer (Sun
>>> Certified
>>> Professional),
>>> Oracle Certified Associate, Solaris Systems Administrator, Drupal
>>> Developer
>>>
>>> Website: http://sinati.com <http://www.sinati.com>
>>> Socialize with me: http://profile.to/charyorde,
>>> http://twitter.com/charyorde,
>>> http://www.google.com/profiles/dreyemi
>>> Skype:drecute
>>>
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups
>>> "Google Web Toolkit" group.
>>> To post to this group, send email to
>>> google-web-toolkit@googlegroups.com.
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>>>
>>
>>
>>
>> --
>> David Chandler
>> Developer Programs Engineer, Google Web Toolkit
>> w: http://code.google.com/
>> b: http://googlewebtoolkit.blogspot.com/
>> t: @googledevtools
>>
>> --
>> You received this message because you are subscribed to the Google Groups
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>> For more options, visit this group at
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>>
>>
>
>
> --
> Odeyemi 'Kayode O.
>
> B.Sc(Hons) Econs, Application Developer & Systems Engineer (Sun Certified
> Professional),
> Oracle Certified Associate, Solaris Systems Administrator, Drupal Developer
>
> Website: http://sinati.com <http://www.sinati.com>
> Socialize with me: http://profile.to/charyorde,
> http://twitter.com/charyorde,
>
> http://www.google.com/profiles/dreyemi
> Skype:drecute
>
--
Odeyemi 'Kayode O.
B.Sc(Hons) Econs, Application Developer & Systems Engineer (Sun Certified
Professional),
Oracle Certified Associate, Solaris Systems Administrator, Drupal Developer
Website: http://sinati.com <http://www.sinati.com>
Socialize with me: http://profile.to/charyorde, http://twitter.com/charyorde,
http://www.google.com/profiles/dreyemi
Skype:drecute
--
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