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  • Cleanly handling events

    - by nkr1pt
    I have code similar to this in all my observer classes that handle events fired by an event bus class. As you can see there are a lot of instanceof checks to choose the path of action needed to appropriately handle events, and I was wondering if this could be done more cleanly, eliminating the instanceof tests? @Override public void handleEvent(Event event) { if (event instanceof DownloadStartedEvent) { DownloadStartedEvent dsEvent = (DownloadStartedEvent)event; dsEvent.getDownloadCandidateItem().setState(new BusyDownloadingState()); } else if (event instanceof DownloadCompletedEvent) { DownloadCompletedEvent dcEvent = (DownloadCompletedEvent)event; dcEvent.getDownloadCandidateItem().setState(new FinishedDownloadingState()); DownloadCandidate downloadCandidate = dcEvent.getDownloadCandidateItem(). getDownloadCandidate(); if (downloadCandidate.isComplete()) { // start extracting } } else if (event instanceof DownloadFailedEvent) { DownloadFailedEvent dfEvent = (DownloadFailedEvent)event; dfEvent.getDownloadCandidateItem().setState(new FailedDownloadingState()); } }

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  • AJAX call + JQuery Dialog Title changing dynamically

    - by Panther24
    I have an AJAX call which loads an Dialog page, now depending upon the content of the data returned on the AJAX call, I want to change the title of the Window, how do I do that. Here is the snippet of code: var divid = "brHistoryForm"; var url = "getRestoreFiles.action?profileName="+profileName; // Create xmlHttp var xmlHttp = AJAX(); // The code... xmlHttp.onreadystatechange=function(){ if(xmlHttp.readyState==4){ document.getElementById(divid).innerHTML=xmlHttp.responseText; } } xmlHttp.open("GET",url,true); xmlHttp.send(null); $('#brHistoryForm').dialog('open'); jQuery('#brHistoryForm').focus(); document.getElementById('pageTitle').innerHTML = "<h2>"+profileName+" - B&R History</h2>" Here 'pageTitle' is a div. When I run the above piece of code, it opens a dialog window, the action is redirected to a jsp page which is loaded inside the div. It works fine, but the title does not get set :(. I've tried to do the setting of the title in the redirected jsp page, it doesn't work either. Here is the code of that JSP page: <%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>B&R History</title> </head> <body> <table style="width: 100%"> <tr> <td style="width: 40%"> <div id="pageTitle"> <h2>B&R History</h2> </div> </td> </tr> </table> <table id="diskTable" cellpadding="0" cellspacing="0" border="1" class="display"> <thead> <tr> <th>Select</th><th>Operation</th> <th>Source</th><th>Destination</th> <th>Status</th><th>Start Time</th><th>End Time</th> </tr> </thead> <tfoot></tfoot> <tbody> <s:iterator value="restoreFileList"> <tr> <td> <s:if test="%{status.equals('Finished')}"> <input onClick="loadRestoreForm('<s:property value="name"/>', '<s:property value="to_path"/>', '<s:property value="status"/>')" type="radio" name='chk' id="chk" value="<s:property value='id'/>,<s:property value="status"/>" > </s:if> <s:else> <input type="radio" name='chk' id="chk" value="<s:property value='id'/>,<s:property value="status"/>" disabled> </s:else> </td> <td> <s:if test="%{br_type == 0}"> Backup </s:if> <s:else> Restore </s:else> </td> <td><s:property value="from_path"/></td> <td><s:property value="to_path"/></td> <td><s:property value="status"/></td> <td><s:property value="start_time"/></td> <td><s:property value="end_time"/></td> </tr> </s:iterator> </tbody> </table> </body> </html> Any help would be appreciated.

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  • receive emails in a .NET service (C#)

    - by Jean Azzopardi
    Hi, this is my first posting on stackoverflow, so don't flame me too much ;) I'm building a service that's monitoring devices and should be able to receive emails from users, parse them and take action accordingly. It should also be able to send emails about the status of the devices, etc. I'll be using Windows.Live email, and as I said, a .NET service that should be able to send/recieve emails. I am wondering what kind of system would I need to cater for receiving the emails, as I already know how to send them via the System.net.Mail API. Thanks. EDIT : Thanks for your comments everybody, I'm looking forward to implementing this system and asking more questions on this rather excellent site.

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  • Enumerating all combinations of lists of different types

    - by jball
    Given two IEnumberables of different types, what is the best practice (considering readability and maintainability) for iterating over both lists to perform an action on all possible combinations? My initial solution was to use nested foreach loops, iterating over the first IEnumerable, and then within that loop, iterating over the second IEnumerable and passing the value from the outer and the current loop into the target method. Eg.: enum ParamOne { First, Second, Etc } List<int> paramTwo = new List<int>() { 1, 2, 3 }; void LoopExample() { foreach (ParamOne alpha in Enum.GetValues(typeof(ParamOne))) { foreach (int beta in paramTwo) { DoSomething(alpha, beta); } } } I tried to restructure it with LINQ, but ended up with something that had no obvious advantages and seemed less intuitive. A search here shows lots of questions about nesting foreachs to iterate over child properties, but I couldn't find anything about iterating over two distinct lists.

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  • jQuery Ajax form submit, to call php login script

    - by Stevie Jenowski
    Thanks for checking out my problem... I'm having trouble submitting a login form via Ajax for a php script to run and return a new set of html items which will be replacing the HTML in #userlinks.... heres what I have so far $("#login_form").submit(function() { return false; }); $('#login_button').click(function(event) { $form = $(this).parent("form"); $.post($form.attr("action"), $form.serialize(), function(data){ $('#userlinks').html(data); }); }); The php script checks for post data of username && password, yet all I'm getting is a page refresh and no changes. Nothing returns unless I turn login_button into a link and change the script a bit... Any help would be appreciated!

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  • How can I access data that's stored in my App Delegate from my various view controllers?

    - by BeachRunnerJoe
    This question is similar to this other post, but I'm new to iPhone development and I'm getting used to the good practices for organizing my data throughout my app. I understand the ApplicationDelegate object to be the best place to manage data that is global to my app, correct? If so, how can I access data that's stored in my App Delegate from various view controllers? Specifically, I have an array of table section titles for my root table view controller created as such... appdelegate.m sectionTitles = [[NSArray alloc] initWithObjects: @"Title1", @"Title2", @"Title3", nil]; rootViewController.appDelegate = self; and I need to access it throughout the different views of my app, like such... rootviewcontroller.m NSUInteger numSections = [self.appDelegate.sectionTitles count]; Is this the best way to do it or are there any reasons I should organize my data a better way? Thanks so much in advance for your help!

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  • Symfony 1.4: Is it possible to prevent escaping of a redirect URL?

    - by Tom
    Hi, If I do a redirect in action as normal: $this->redirect('@mypage?apple=1&banana=2&orange=3'); ... Symfony produces the correct URL: /something/something?apple=1&banana=2&orange=3 However, the following gets escaped for some bizarre reason: $string = 'apple=1&banana=2&orange=3'; $this->redirect('@mypage?'.$string); ... and the following URL is produced: /something/something?apple=1&amp;banana=2&amp;orange=3 Is there a way to avoid this escaping and have the ampersands appear correctly in the URL? I've tried everything I can think of and it's driving me mad. I need this for a situation where I'm pulling a saved query as a string from the database and would just like to latch it onto the URL. I'm aware that I could generate an array from the string and then generate a brand new URL from the array, but it just seems like a lot of overhead because of this silly escaping. Thanks.

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  • Use javascript variables in Rails view helpers

    - by Horacio
    Using jqGrid I want to generate delete links for each row in the grid. The standard way to do this is to add the links in the gridComplete callback like shown below: gridComplete: function() { var ids = jQuery("#jobs_table").jqGrid('getDataIDs'); for(var i=0;i < ids.length;i++){ var cl = ids[i]; be = '<%= link_to(image_tag("delete.gif", :border=>0, :size=>"20x22", :alt => "delete"),· { :action => 'destroy', :id => 'cl', :method => :delete}, :class => 'ajax') -%>'; jQuery("#jobs_table").jqGrid('setRowData',ids[i],{workflow_state:be}); } }, Using getDataIDs I get a list of IDs that I can use to generate the delete links. The problem is that this is a javascript call that results in a javascript variable. The question is how can I use this variable "cl" inside rails link_to view helper?

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  • Making id'less url in asp.net mvc razor

    - by Sushant
    I am working with URL routing , and have some issues. I want my url to be like this: www.domain.com/p/myproduct But I also want to be able to retrieve the ID of the product, without accessing the database. I thought about having a URL like: www.domain.com/p/myproduct/1 But if I could hide the ID it would be better. So, how do I do it the simplest way? Currently my Global.asax has the following route: routes.MapLocalizedRoute("Product", "p/{productId}/{SeName}", new { controller = "Catalog", action = "Product", SeName = UrlParameter.Optional }, new { productId = @"\d+" }, new[] { "Nop.Web.Controllers" });

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  • Generating Dynamic web pages without server side scripting

    - by Microkernel
    Hi guys, I am trying to control a media device which has lot of multimedia content that it can play using another device(remote control device) like an ipad connected to the LAN. (UPnP) I want the media device to be able to send the content listing to the remote device so that it will be rendered as a webpage on the remote controller. And actions on the webpages needs to be sent to the the device as commands to execute (like play, pause, next etc). The media device is an embedded device, hence can't have any server side scripting, all has to be done on the client side. I want the page rendered to be HTML5. So, is it possible to generate dynamic HTML5 pages using just client side scripting? Thanks a lot. I am an embedded systems developer hence clueless about the web designing stuff.

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  • CodeIgniter: json_decode array issues

    - by thedp
    On my client side I'm sending an ajax request with jQuery in the following matter: $.post(script.php, { "var1":"something", "var2":"[1,2,3]" }, function(data) { }, "json"); On the server side, in the CodeIgniter's controller I'm receiving the values like so: $var1 = trim($this->input->post('var1')); $var2 = trim($this->input->post('var2')); My question is how do I convert the string in $var2 into a PHP array. I tried using json_decode($var2, true) but it returns a null since "[1,2,3]" is not a legal JSON string by itself. Also, if you believe there is a better way for me to read the values on the server-side please show me how. Thank you.

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  • How do I switch between Navigation Controllers?

    - by RexOnRoids
    Situation: I have an Xcode project based on the "Navigation-Based-Application" template. So that means I have a SINGLE UINavigationController that manages a UIViewController. What I want To Do: What I want to do is add one more UINavigationController to my project -- and be able to switch back and forth between them. (I want to do this to make space for some seperate unrelated content so that it does not have a back button pointing back to the root view controller.) Question: How do I add one more UINavigationController to my project and switch between the two UINavigationControllers?

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  • Asp .Net MVC Viewmodel should be class or struct?

    - by Jonas Everest
    Hey guys, I have just been thinking about the concept of view model object we create in asp.net MVC. Our purpose is to instantiate it and pass it from controller to view and view read it and display the data. Those view model are usually instantiated through constructor. We won't need to initialize the members, we may not need to redefine/override parameterless constructor and we don't need inheritance feature there. So, why don't we use struct type for our view model instead of class. It will enhance the performance.

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  • Why doesn't this UIButton show its text label?

    - by Dan Ray
    Everything about this UIButton renders great except the text that's supposed to be on it. NSLog demonstrates that the text is in the right place. What gives? UIButton *newTagButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [newTagButton addTarget:self action:@selector(showNewTagField) forControlEvents:UIControlEventTouchUpInside]; newTagButton.titleLabel.text = @"+ New Tag"; NSLog(@"Just set button label to %@", newTagButton.titleLabel.text); newTagButton.titleLabel.font = [UIFont systemFontOfSize:17]; newTagButton.titleLabel.textColor = [UIColor redColor]; CGSize addtextsize = [newTagButton.titleLabel.text sizeWithFont:[UIFont systemFontOfSize:17]]; CGSize buttonsize = { (addtextsize.width + 20), (addtextsize.height * 1.2) }; newTagButton.frame = CGRectMake(x, y, buttonsize.width, buttonsize.height); [self.mainView addSubview:newTagButton];

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  • Setting Grouping in UITableView under UINavigationController

    - by climbon
    In my UINavigationController app, my first view is a UITableView. I can't seem to find a way to set the property of this UITableView to 'grouped'. Since UITableView is dynamically generated I don't have the luxury of Interface Builder. Searched forums here and googled other places and closest I saw was to override either initWithStyle or initWithCoder as follows. (id)initWithStyle:(UITableViewStyle)style { if (self = [super initWithStyle:UITableViewStyleGrouped]) { } return self; } However this above function never gets called. when I overrided initWithCoder I could see it worked and I was able to change UITableView contents to grouped. But then title automatically became 'Root View Controller' and none of the cells were active anymore although they got grouped fine. That is while they looked active but if you click on them, those cells won't do anything. But I have seen apps which have their very first view being UITableView is grouped. So there must be a way to do it but I don't know how.

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  • Develop Rails app on Mac using with TextMate Tutorial

    - by Meltemi
    I've found this a somewhat dated tutorial for developing a Rails application on Leopard with XCode. Wondering if anyone knows of a more up-to-date (ideally Mac based) tutorial that uses TextMate (or XCode if it's indeed preferred, or even just the command line). TextMate is appealing to me but wondering how to work scrips like ruby script/generate controller etc. into workflow or if switching between command-line & TextMate is standard operating procedure... If it matters were have Snow Leopard clients and Leopard Servers at our disposal. Thanks..

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  • View Window Not Opening in Interface Builder

    - by senfo
    When I double click the XIB file in Xcode, Interface Builder typically launches a few different windows, one of which is the View window. For some reason, however, the View window isn't opening for one of my XIB files. If I open any of the other XIB files, however, the View window does open. I'm not sure if there's a way to manually launch the View window (I looked through all of the menu items and couldn't find a way) or if I broke something in my XIB. Update: I created a connection from the app delegate to a navigation controller, which seemed to break something. When I cleared that connection, the View window came back.

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  • Why Is my UISlider Thumb Image Being Shown Multiple Times and Not Disappearing As They Should?

    - by Gorgando
    This slider is possessed: When I move the slider thumb left or right, it leaves the original image there (creating an extra image). This doesn't happen every time and the only consistency i've noticed is that it's inconsistent. When the table is in "Editing mode" it is more likely to create a duplicate thumb image, but it also does so in regular mode. This is the code that I use to create the slider: CGRect frame = CGRectMake(20, 42.0, 280.0, 22); self.slider = [[UISlider alloc] initWithFrame:frame]; [self.slider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged]; self.slider.continuous = YES; self.slider.minimumValue = 0.0; self.slider.maximumValue = 5.0; self.slider.value = 0.0; [sliderCell addSubview:self.slider]; Appreciate any thoughts you might have!

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  • UIWebView in multithread ViewController

    - by Tao
    I have a UIWebView in a viewcontroller, which has two methods as below. The question is if I pop out(tap back on navigation bar) this controller before the second thread is done, the app will crash after [super dealloc], because "Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit from a secondary thread.". Any help would be really appreciated. -(void)viewDidAppear:(BOOL)animated { [super viewWillAppear:animated]; NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(load) object:nil]; [operationQueue addOperation:operation]; [operation release]; } -(void)load { [NSThread sleepForTimeInterval:5]; [self performSelectorOnMainThread:@selector(done) withObject:nil waitUntilDone:NO]; }

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  • Is it possible to use re2 from Python?

    - by flow
    i just discovered http://code.google.com/p/re2, a promising library that uses a long-neglected way (Thompson NFA) to implement a regular expression engine that can be orders of magnitudes faster than the available engines of awk, Perl, or Python. so i downloaded the code and did the usual sudo make install thing. however, that action had seemingly done little more than adding /usr/local/include/re2/re2.h to my system. there seemed to be some `*.a file in addition, but then what is it with this *.a extension? i would like to use re2 from Python (preferrably Python 3.1) and was excited to see files like make_unicode_groups.py in the distro (maybe just used during the build process?). those however were not deployed on my machine. how can i use re2 from Python?

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  • iPhone: Crash When Deleting UITableView Rows

    - by Ajeet Kumar Yadav
    Hi, I am new in iPhone development. I am developing an application that fetches a value from a database and displays it in a table view. I want to delete table rows one by one but the rows do not delete and the application crashes. Here is my row deletion code: - (void)tableView:(UITableView *)tv commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if(editingStyle == UITableViewCellEditingStyleDelete) { SanjeevKapoorAppDelegate *appDelegate =(SanjeevKapoorAppDelegate *)[[UIApplication sharedApplication] delegate]; list *animal =[appDelegate.list1 objectAtIndex:indexPath.row]; [appDelegate deleteCoffee]; [self.tableView reloadData]; //Delete the object from the table. [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; } I also delete all rows with this action: -(IBAction)deletebtn:(id)sender{ SanjeevKapoorAppDelegate *appDelegate =(SanjeevKapoorAppDelegate *)[[UIApplication sharedApplication] delegate]; [appDelegate deleteCoffee]; [self.tableView reloadData]; } How do I properly implement delete in an UITableView?

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  • How to get the values from post method to the codehind file

    - by SmartestVEGA
    I have created a Webpage which will post as "post" method..not as "get" method. <html> <head> </head> <body> <FORM action="RetrieveData_Post.asp" id=form1 method=post name=form1> First Name: <br> <INPUT id="txtFirstName" name="txtFirstName" > <br> Last Name: <br> <INPUT id="txtLastName" name="txtLastName" > <br> <INPUT type="submit" value="Submit"> </FORM> </body> </html> i want to retieve the values in the textboxes in the code behind of another form. Please help me.

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  • Session is Closed! NHibernate shouldn't be trying to grab data

    - by Jeremy Holovacs
    I have a UnitOfWork/Service pattern where I populate my model using NHibernate before sending it to the view. For some reason I still get the YSOD, and I don't understand why the object collection is not already populated. My controller method looks like this: public ActionResult PendingRegistrations() { var model = new PendingRegistrationsModel(); using (var u = GetUnitOfWork()) { model.Registrations = u.UserRegistrations.GetRegistrationsPendingAdminApproval(); } return View(model); } The service/unit of work looks like this: public partial class NHUserRegistrationRepository : IUserRegistrationRepository { public IEnumerable<UserRegistration> GetRegistrationsPendingAdminApproval() { var r = from UserRegistration ur in _Session.Query<UserRegistration>() where ur.Status == AccountRegistrationStatus.PendingAdminReview select ur; NHibernateUtil.Initialize(r); return r; } } What am I doing wrong?

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  • jquery validation

    - by Chandrasekhar
    I am adding the dynamic text boxes when click the add link. I want to do the remote validation for dynamic text boxes. Please see the code below: <input type="text" name="test" id="test1" /> click on add button var sc ="<td><input type = 'text' name ='test' id ='test"+(textid+1)+"'/></td> document.getElementById("row1-"+textid).innerHTML=sc; Creating the 4 text fields in same way. I am validating this text fields using jQuery like $("#testSearchForm").validate({ rules: { "test": { required:true, remote: "chkvalue.action" } Required validation is working fine but remote method validation is not working. Can anyone make a suggestion?

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  • Is there any Opensource Browser for touchscreen device ?

    - by Wallah
    I need internet browser on my device which has 4.3 Inch screen with 480x272 resolution, I am using embedded Qt 4.6.2 on embedded linux. Micro-controller has ARM9 with 450 Mhz. Requirements for browser are - Touch Screen Support, Panning ( No Scroll bars) - Single touch Zooming ( No Multi Touch Available). - Fit to screen width support ( No Horizontal Scrolling). - Acid 3 Standard Compliable. - Page loading should be like, display all visible text first and then load and show Images Gradually. Is there any browser which is near to this requirements.

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