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POHow to retrieve the Current Presenter in GWT or GWTP?
 

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  1. POHow to retrieve the Current Presenter in GWT or GWTP?
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    <p>Here is my problem. I have many links in my header presenter.</p> <pre> Link1 - Link2 - Link3 - GuideDialogLink </pre> <p>When user clicks on Link1 or Link2 or Link3, it will open a new browser.</p> <p>However, when user clicks on GuideDialogLink, then it will popup a DialogBox right on top of the current link. </p> <p>The GuideDialog is designed in a way that it show different Gui depending on which link user is staying. Its code is like this:</p> <pre><code> class GuideDialog extends DialogBox{ public GuideDialog(int whichLink){ if(whichLink==0){ //show Gui 1 } else if(whichLink==2){ //show Gui 2 } else if(whichLink==3){ //show Gui 3 } } } </code></pre> <p>Ex, when user is staying in Link3 &amp; if they click GuideDialogLink, it will show a DialogBox that has Gui3 which is different from Gui1 or Gui2 if user is staying on Link1 or Link2.</p> <p>So, my question is:</p> <p>Is there any way to retrieve the Current Presenter?</p> <p>If we know which Presenter is current one, then we can call GuideDialog accordingly ex: <code>GuideDialog myGD=new GuideDialog(0);</code></p> <p>-Other solution is to store a <code>public static int currentLink</code> in <code>Utility</code> class. And when user clicks link1 or link2 or link3 we can use EventBus to set <code>public static currentLink</code> to set accordingly &amp; eventually <code>GuideDialog myGD=new GuideDialog(Utility.currentLink);</code>. </p> <p>But i don't think this solution is elegant since Google must have some function to let us know which current page we are in.</p> <p>So how can i solve my problem elegantly?</p> <p>EDIT</p> <p>Ok, let me clarify it. I am using GWTP to create my webapp.</p> <p>-1st, I used eclipse to generate HeaderPresenter. The eclipse will create (HeaderPresenter.java, HeaderView.java &amp; HeaderView.ui.xml). HeaderPresenter has 4 hyperlinks: link1,link2, link3, GuideDialogLink.</p> <p>-2nd, I created Link1Presenter (Link1Presenter.java, Link1View.java, Link1View.ui.xml). Then i created Link2Presenter (Link2Presenter.java, Link2View.java, Link2View.ui.xml). Then I created Link3Presenter (Link3Presenter.java, Link3View.java, Link3View.ui.xml)</p> <p>-3rd, I used <code>setInSlot</code> to make Link1Presenter, Link2Presenter, Link3Presenter to be embeded or nested inside HeaderPresenter. It means when user go to link1 (ex: abc.com#link1) they will see 4 hyperlinks (link1,link2, link3, GuideDialogLink). If they go to link2 (ex: abc.com#link2) or link3, they also see 4 hyperlinks.</p> <p>-4th, I create GuideDialog.java extends DialogBox &amp; in the HeaderPresenter, i has <code>guideDialogLink.addClickHandler(new ClickHandler(){ GuideDialog myGD=new GuideDialog (int whichLink); });</code></p> <p>So when users are in either link1,2, or 3 they will see GuideDialogLink right? &amp; when they click GuideDialog a DialogBox will popup right?</p> <p>Now my requirement is that when users are in Link1 &amp; if they click GuideDialogLink, a dialog will popup &amp; show a Gui (2 textboxes on it). When users are in Link2 &amp; if they click GuideDialogLink, a dialog will popup &amp; show another Gui (2 labels on it). When users are in Link3 &amp; if they click GuideDialogLink, a dialog will popup &amp; show another different Gui (2 checkboxes on it) </p>
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      1. POHow to retrieve the Current Presenter in GWT or GWTP?
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    1. COCorrect me if I'm wrong, what you want is hovering over a link, then click on the show-dialog button, and the dialog will show the view associated with the correspondant presenter, is that right?
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    2. COno, when user clicks on the GuideDialogLink, then a DialogBox will popup, it won't open new browser. So suppose u are in the link1 (my.com/link1) & u click on GuideDialogLink, then u are still in my.com/link1 & the dialogbox will show the Gui1 (say 1 button & 2 textbox). Ok now u are in my.com/link2 & u clicks GuideDialogLink, then u are still in my.com/link2 & the dialogbox will show the Gui2 (maby be there're 4 radio buttons + 2 labels)
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    3. COSo, the scenario is the following: we have 3 Views each associated with its corresponding presenter. Then we've got: Link1-View1-Presenter1, and so on. Then if you stay in Link1 view and then click on GuideDialogLink you will show some GUI retrieved by Presenter1. Is that correct?
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