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  • Is there a recommended way to use the Observer pattern in MVP using GWT?

    - by Tomislav Nakic-Alfirevic
    I am thinking about implementing a user interface according to the MVP pattern using GWT, but have doubts about how to proceed. These are (some of) my goals: - the presenter knows nothing about the UI technology (i.e. uses nothing from com.google.*) - the view knows nothing about the model or the presenter - the model knows nothing of the view or the presenter (...obviously) I would place an interface between the view and the presenter and use the Observer pattern to decouple the two: the view generates events and the presenter gets notified. What confuses me is that java.util.Observer and java.util.Observable are not supported in GWT. This suggests that what I'm doing is not the recommended way to do it, as far as GWT is concerned, which leads me to my questions: what is the recommended way to implement MVP using GWT, specifically with the above goals in mind? How would you do it?

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  • NHibernate Oracle stored procedure problem

    - by Mr. Flint
    ------Using VS2008, ASP.Net with C#, Oracle, NHibernate---- I have tested my stored procedure. It's working but not with NHibernate. Here are the codes: Procedure : create or replace procedure ThanaDelete (id number) as begin delete from thana_tbl where thana_code = id; end Mapping File: <?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="DataTransfer" namespace="DataTransfer"> <class name="DataTransfer.Models.Thana, DataTransfer" table="THANA_TBL"> <id name="THANA_CODE" column="THANA_CODE" type="Int32" unsaved-value="0"> <generator class="native"> <param name="sequence"> SEQ_TEST </param> </generator> </id> <property name="THANA_NAME" column="THANA_NAME" type="string" not-null="false"/> <property name="DISTRICT_CODE" column="DISTRICT_CODE" type="Int32" not-null="false"/> <property name="USER_ID" column="USER_ID" type="string" not-null="false"/> <property name="TRANSACTION_DATE" column="TRANSACTION_DATE" type="Date" not-null="false"/> <property name="TRANSACTION_TIME" column="TRANSACTION_TIME" type="string" not-null="false"/> <sql-delete>exec THANADELETE ? </sql-delete> </class> </hibernate-mapping> error: Message: could not delete: [DataTransfer.Models.Thana#10][SQL: exec THANADELETE ?] Source: NHibernate Inner Exception System.Data.OracleClient.OracleException Message: ORA-00900: invalid SQL statement

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  • How to extract paragraphs instead of whole texts only for XWPFWordExtractor (POI Library) Java

    - by Mr CooL
    Hello, I know the following code could extract whole texts of the docx document, however, I need to extract paragraph instead. Is there are possible way?? public static String extractText(InputStream in) throws Exception { JOptionPane.showMessageDialog(null, "Start extracting docx"); XWPFDocument doc = new XWPFDocument(in); XWPFWordExtractor ex = new XWPFWordExtractor(doc); String text = ex.getText(); return text; } Any helps would much appreciated. I need this so urgently.

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  • How do I set a VB.Net ComboBox default value

    - by Mr Ed
    I can not locate the correct method to make the first item in a combo box visible. The app starts with an empty combo box. The user makes a radio box selection then clicks Go! (how original). The combo box is loaded via an LDAP query. All this is working just fine. The problem is the combo box still appears to the user to be empty. They must click the arrow to see the options. How do I make the first option 'visible' after the users clicks Go!? I thought it would be simple... Thanks, Ed

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  • using sqlite3 with lua

    - by mr calendar
    I'm trying to use sqlite3 with lua (am already using c++, but I'm a n00b with lua- I read this) but I'm getting the following when trying to build the library or whatever: C:\lib\lsqlite3-7>mingw32-make process_begin: CreateProcess(NULL, pkg-config --version, ...) failed. makefile:53: *** windows32. Stop. I'm not at all surprised at a makefile failing but I can't do them (is it spaces or tabs? where is it they have to go?), I would have thought there was a binary for windows? Any simple answers appreciated. I haven't got the time to learn make or install cygwin or whatever.

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  • Custom Validator with an OR Condition

    - by zSysop
    Hi all, Right now i have an asp.net 2.0 app which allows a user to search by the following fields Location (Required if there is nothing in idnumber field) Address (Required if there is nothing in idnumber field) Zip (Required if there is nothing in idnumber field) **OR** IDNumber. (Required if there is nothing in any of the other fields) What i'd like to be able to do is validate this client side on button click and display a summary of errors. i.e. if a user leaves every criteria blank. I'd like to display "You must enter a IDNumber or "Location, Address, and Zip to continue" I've never used the Custom Validation control so here are some questions. 1) Is it able to do this? 2) Does anyone have an example of how to do this? Thanks

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  • AS2 Play Movie Clip OnMouseUp not working

    - by Mr Vardermier
    My plan is to play mc_1 on MouseDown and mc_2 on MouseUp. The trouble I am having is that when I release, mc_2 is not playing. mc_1 plays fine when MouseDown is initiated. Here's my code: stop(); slide_mc.stop(); slideback_mc.stop(); onMouseDown = function() { _root.slide_mc.play(); } onMouseUp = function() { _root.slideback_mc.play(); } I am new to AS2, I have tried looking but can't seem to find anything like this... Many thanks in advance!

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  • WPF C# Hide TabControl Items on Application Startup

    - by mr justinator
    I've created a start page that loads when the application is run but it is also showing my tabcontrol (two tabitems for editing & diagraming). How do I hide my tabcontrol items on startup and only show it when a user selects file - new? Many thanks! Xaml: <TabControl Height="Auto" Name="tabControl1" Width="Auto"> <TabItem Header="Diagram" Name="DiagramTab"></TabItem> <TabItem Header="Rulebase" Name="RuleTab" > <Grid> <TextBox Height="Auto" Name="RuleText" Width="Auto" Text="" AcceptsTab="True" AcceptsReturn="True" VerticalScrollBarVisibility="Auto" GotFocus="FocusChanged" KeyDown="ContentChanged" HorizontalScrollBarVisibility="Visible" /> </Grid> </TabItem> </TabControl> Here's my file - new menu item: private void ProcessNewCommand() { if (dataChanged) { string sf = SaveFirst(); if (sf != "Cancel") { ClearState(); } } else { ClearState(); } }

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  • Null Safe dereferencing in Java like ?. in Groovy using Maybe monad

    - by Sathish
    I'm working on a codebase ported from Objective C to Java. There are several usages of method chaining without nullchecks dog.collar().tag().name() I was looking for something similar to safe-dereferencing operator ?. in Groovy instead of having nullchecks dog.collar?.tag?.name This led to Maybe monad to have the notion of Nothing instead of Null. But all the implementations of Nothing i came across throw exception when value is accessed which still doesn't solve the chaining problem. I made Nothing return a mock, which behaves like NullObject pattern. But it solves the chaining problem. Is there anything wrong with this implementation of Nothing? [http://github.com/sathish316/jsafederef/blob/master/src/s2k/util/safederef/Nothing.java] As far as i can see 1. It feels odd to use mocking library in code 2. It doesn't stop at the first null. 3. How do i distinguish between null result because of null reference or name actually being null? How is it distinguished in Groovy code?

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  • Change bgcolor param value on mouse over?

    - by mr.matthewdavis
    I have a .SWF email submit form. The background color is set via: `<param name="bgcolor" value="#000000" />` and in the embed: `<embed src="FILE.swf" flashvars="STUFF" quality="high" **bgcolor="#000000"** width="260" height="32" name="WidgetMailBlack" align="middle" swLiveConnect="true" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />` Is it possible either on mouse over of the Object or a containing div to change those values? i.e. to #ffffff many thanks!

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  • Alternative approach to OpenGL View on top of Camera

    - by Mr. Roland
    Hi, the traditional way of doing a camera preview background with OpenGL on the front is to take two SurfaceViews(one for the camera another for OpenGL) and stack them on top of each other. The problem is that stacking SurfaceViews is discouraged: http://groups.google.com/group/android-developers/browse_thread/thread/4850fe5c314a3dc6 So what alternatives are there? I was considering the following: Subclass GlSurfaceView, and then call set the Camera preview onto the holder of this subclass: Camera.setPreviewDisplay(mHolder); Don't use GLSurfaceView, instead create your own SurfaceView subclass where you display the Camera preview onto the holder and also draw your openGL. This would require to use OpenGL without GLSurfaceView, has anyone done this before? I'm not sure if this even is possible or makes sense, since it implies displaying the camera preview onto the holder of the surface and at the same time drawing OpenGL on the same surface. Is there any other sensible alternative to solving the problem without using two SurfaceViews? Thanks!

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  • Using Website Information Without WebView

    - by Mr. Monkey
    I am very new to this, and I more looking for what information I need to study to be able to accomplish this. What I want to do is use my GUI I have built for my app, but pull the information from a website. If I have a website that looks like this: (Sorry, can't post pics yet) http:// dl.dropbox.com/u/7037695/ErrorCodeApp/FromWebsite.PNG (full website can be seen at http://www.atmequipment.com/Error-Codes) What would I need from the website so that if a user entered an error code here: http:// dl.dropbox.com/u/7037695/ErrorCodeApp/InApp.PNG It would use the search from the website, and populate the error description in my app? I know this is a huge question, I'm just looking for what is actually needed to accomplish this, and then I can start researching from there. -- Or is it even possible?

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  • Objective-C: Scope problems cellForRowAtIndexPath

    - by Mr. McPepperNuts
    How would I set each individual row in cellForRowAtIndexPath to the results of an array populated by a Fetch Request? (Fetch Request made when button is pressed.) - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { // ... set up cell code here ... cell.textLabel.text = [results objectAtIndex:indexPath valueForKey:@"name"]; } warning: 'NSArray' may not respond to '-objectAtIndexPath:' Edit: - (NSArray *)SearchDatabaseForText:(NSString *)passdTextToSearchFor{ NSManagedObject *searchObj; XYZAppDelegate *appDelegate = [[UIApplication sharedApplication] delegate]; NSManagedObjectContext *managedObjectContext = appDelegate.managedObjectContext; NSFetchRequest *request = [[NSFetchRequest alloc] init]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name contains [cd] %@", passdTextToSearchFor]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Entry" inManagedObjectContext:managedObjectContext]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:NO]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [request setSortDescriptors:sortDescriptors]; [request setEntity: entity]; [request setPredicate: predicate]; NSError *error; results = [managedObjectContext executeFetchRequest:request error:&error]; // NSLog(@"results %@", results); if([results count] == 0){ NSLog(@"No results found"); searchObj = nil; self.tempString = @"No results found."; }else{ if ([[[results objectAtIndex:0] name] caseInsensitiveCompare:passdTextToSearchFor] == 0) { NSLog(@"results %@", [[results objectAtIndex:0] name]); searchObj = [results objectAtIndex:0]; }else{ NSLog(@"No results found"); self.tempString = @"No results found."; searchObj = nil; } } [tableView reloadData]; [request release]; [sortDescriptors release]; return results; } - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{ textToSearchFor = mySearchBar.text; results = [self SearchDatabaseForText:textToSearchFor]; self.tempString = [myGlobalSearchObject valueForKey:@"name"]; NSLog(@"results count: %d", [results count]); NSLog(@"results 0: %@", [[results objectAtIndex:0] name]); NSLog(@"results 1: %@", [[results objectAtIndex:1] name]); } @end Console prints: 2010-06-10 16:11:18.581 XYZApp[10140:207] results count: 2 2010-06-10 16:11:18.581 XYZApp[10140:207] results 0: BB Bugs 2010-06-10 16:11:18.582 XYZApp[10140:207] results 1: BB Annie Program received signal: “EXC_BAD_ACCESS”. (gdb) Edit 2: BT: #0 0x95a91edb in objc_msgSend () #1 0x03b1fe20 in ?? () #2 0x0043cd2a in -[UITableViewRowData(UITableViewRowDataPrivate) _updateNumSections] () #3 0x0043ca9e in -[UITableViewRowData invalidateAllSections] () #4 0x002fc82f in -[UITableView(_UITableViewPrivate) _updateRowData] () #5 0x002f7313 in -[UITableView noteNumberOfRowsChanged] () #6 0x00301500 in -[UITableView reloadData] () #7 0x00008623 in -[SearchViewController SearchDatabaseForText:] (self=0x3d16190, _cmd=0xf02b, passdTextToSearchFor=0x3b29630) #8 0x000086ad in -[SearchViewController searchBarSearchButtonClicked:] (self=0x3d16190, _cmd=0x16492cc, searchBar=0x3d2dc50) #9 0x0047ac13 in -[UISearchBar(UISearchBarStatic) _searchFieldReturnPressed] () #10 0x0031094e in -[UIControl(Deprecated) sendAction:toTarget:forEvent:] () #11 0x00312f76 in -[UIControl(Internal) _sendActionsForEventMask:withEvent:] () #12 0x0032613b in -[UIFieldEditor webView:shouldInsertText:replacingDOMRange:givenAction:] () #13 0x01d5a72d in __invoking___ () #14 0x01d5a618 in -[NSInvocation invoke] () #15 0x0273fc0a in SendDelegateMessage () #16 0x033168bf in -[_WebSafeForwarder forwardInvocation:] () #17 0x01d7e6f4 in ___forwarding___ () #18 0x01d5a6c2 in __forwarding_prep_0___ () #19 0x03320fd4 in WebEditorClient::shouldInsertText () #20 0x0279dfed in WebCore::Editor::shouldInsertText () #21 0x027b67a5 in WebCore::Editor::insertParagraphSeparator () #22 0x0279d662 in WebCore::EventHandler::defaultTextInputEventHandler () #23 0x0276cee6 in WebCore::EventTargetNode::defaultEventHandler () #24 0x0276cb70 in WebCore::EventTargetNode::dispatchGenericEvent () #25 0x0276c611 in WebCore::EventTargetNode::dispatchEvent () #26 0x0279d327 in WebCore::EventHandler::handleTextInputEvent () #27 0x0279d229 in WebCore::Editor::insertText () #28 0x03320f4d in -[WebHTMLView(WebNSTextInputSupport) insertText:] () #29 0x0279d0b4 in -[WAKResponder tryToPerform:with:] () #30 0x03320a33 in -[WebView(WebViewEditingActions) _performResponderOperation:with:] () #31 0x03320990 in -[WebView(WebViewEditingActions) insertText:] () #32 0x00408231 in -[UIWebDocumentView insertText:] () #33 0x003ccd31 in -[UIKeyboardImpl acceptWord:firstDelete:addString:] () #34 0x003d2c8c in -[UIKeyboardImpl addInputString:fromVariantKey:] () #35 0x004d1a00 in -[UIKeyboardLayoutStar sendStringAction:forKey:] () #36 0x004d0285 in -[UIKeyboardLayoutStar handleHardwareKeyDownFromSimulator:] () #37 0x002b5bcb in -[UIApplication handleEvent:withNewEvent:] () #38 0x002b067f in -[UIApplication sendEvent:] () #39 0x002b7061 in _UIApplicationHandleEvent () #40 0x02542d59 in PurpleEventCallback () #41 0x01d55b80 in CFRunLoopRunSpecific () #42 0x01d54c48 in CFRunLoopRunInMode () #43 0x02541615 in GSEventRunModal () #44 0x025416da in GSEventRun () #45 0x002b7faf in UIApplicationMain () #46 0x00002578 in main (argc=1, argv=0xbfffef5c) at /Users/default/Documents/iPhone Projects/XYZApp/main.m:14

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  • Image Grabbing with False Referer

    - by Mr Carl
    Hey guys, I'm struggling with grabbing an image at the moment... sounds silly, but check out this link :P http://manga.justcarl.co.uk/A/Oishii_Kankei/31/1 If you get the image URL, the image loads. Go back, it looks like it's working fine, but that's just the browser loading up the cached image. The application was working fine before, I'm thinking they implemented some kind of Referer check on their images. So I found some code and came up with the following... $ref = 'http://www.thesite.com/'; $file = 'theimage.jpg'; $hdrs = array( 'http' = array( 'method' = "GET", 'header'= "accept-language: en\r\n" . "Accept:application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*\/*;q=0.5\r\n" . "Referer: $ref\r\n" . // Setting the http-referer "Content-Type: image/jpeg\r\n" ) ); // get the requested page from the server // with our header as a request-header $context = stream_context_create($hdrs); $fp = fopen($imgChapterPath.$file, 'rb', false, $context); fpassthru($fp); fclose($fp); Essentially it's making up a false referrer. All I'm getting back though is a bunch of gibberish (thanks to fpassthru) so I think it's getting the image, but I'm afraid to say I have no idea how to output/display the collected image. Cheers, Carl

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  • Multiple .NET processes memory footprint

    - by mr.b
    I am developing an application suite that consists of several applications which user can run as needed (they can run all at the same time, or only several..). My concern is in physical memory footprint of each process, as shown in task manager. I am aware that Framework does memory management behind the curtains in terms that it devotes parts of memory for certain things that are not directly related to my application. The question. Does .NET Framework has some way of minimizing memory footprint of processes it runs when there are several processes running at the same time? (Noobish guess ahead) Like, if System.dll is already loaded by one process, does framework load it for each process, or it has some way of sharing it between processes? I am in no way striving to write as small (resource-wise) apps as possible (if I were, I probably wouldn't be using .NET Framework in the first place), but if there's something I can do something about over-using resources, I'd like to know about it.

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