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  • jstree dynamic JSON data from django

    - by danspants
    I'm trying to set up jsTree to dynamically accept JSON data from django. This is the test data i have django returning to jstree: result=[{ "data" : "A node", "children" : [ { "data" : "Only child", "state" : "closed" } ], "state" : "open" },"Ajax node"] response=HttpResponse(content=result,mimetype="application/json") this is the jstree code I'm using: jQuery("#demo1").jstree({ "json_data" : { "ajax" : { "url" : "/dirlist", "data" : function (n) { return { id : n.attr ? n.attr("id") : 0 }; }, error: function(e){alert(e);} } }, "plugins" : [ "themes","json_data"] }); All I get is the ajax loading symbol, the ajax error response is also triggered and it alerts "undefined". I've also tried simpleJson encoding in django but with the same result. If I change the url so that it is receiving a JSON file with identical data, it works as expected. Any ideas on what the issue might be?

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  • ASP.NET MVC Create dynamic navigation sub-menu on the master page

    - by Michael Narinsky
    I'm trying to create an ASP.NET MVC master page so the site navigation on it will look like this: Main Menu:Home | About | News Sub Menu: Home_Page1 | Home_Page2 The Sub Menu section should always show sub-menu for the currently selected Main Menu page (on the example above 'Home' page is selected) unless a user hovers the mouse on another Main Menu item (then it shows that item's sub-menu instead). What is the best way to get such functionality in ASP.NET MVC?

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  • java: Read text file and store the info in an array using scanner class

    - by Amateur
    Hi, I have a text file include Student Grades like Kim $ 40 $ 45 Jack $ 35 $ 40 I'm trying to read this data from the text file and store the information into an array list using Scanner Class could any one guied me to write the code correctly ? Here is what I have so far public class ReadStudentsGrade { public static void main(String[] args) throws IOException { ArrayList stuRec = new ArrayList(); File file = new File("c:\\StudentGrade.txt"); try { Scanner scanner = new Scanner(file).useDelimiter("$"); while (scanner.hasNextLine()) { String stuName = scanner.nextLine(); int midTirmGrade = scanner.nextInt(); int finalGrade = scanner.nextInt(); System.out.println(stuName + " " + midTirmGrade + " " + finalGrade); } } catch (FileNotFoundException e) { e.printStackTrace(); } }

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  • Manual (Dynamic) LINQ subquery using IN clause

    - by immortalali-msn-com
    Hi Everyone, I want to query the DB through LINQ writing manual SQL, my linq method is: var q = db.TableView.Where(sqlAfterWhere); returnValue = q.Count(); this method queries well if the value passed to variable "sqlAfterWhere" is: (this variable is String type) it.Name = 'xyz' but what if i want to use IN clause, using a sub query. (i need to use 'it' before every column name in the above query to work), i cant use 'it' before the sub query columns as its a separate query, so what should i do, if i dont use any thing, and use column names directly it gives error saying " could not be resolved" where is my column names with out 'it' at the begining. So the query not working is: (this is a string passed to the variable above): it.Name IN (SELECT Name FROM TableName WHERE Address LIKE '%SomeAddress%') the errors come out as: Name could not be resolved Address could not be resolved The exact error is: "'Name' could not be resolved in the current scope or context. Make sure that all referenced variables are in scope, that required schemas are loaded, and that namespaces are referenced correctly., near simple identifier, line 6, column 25." Same error for "Address as well if i use 'it.' before these columns it gives error as: "The element type 'Edm.Int32' and the CollectionType 'Transient.collection[Transient.rowtype(GroupID,Edm.Int32(Nullable=True,DefaultValue=))]' are not compatible. The IN expression only supports entity, primitive, and reference types. , near WHERE predicate, line 6, column 14." Thanks for the help

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  • DynamicResource and Dynamic Items in ContextMenu on XamDataGrid

    - by miguel
    I would like to dynamically create a set of context menu options based upon some properties. Currently, I am creating a context menu as a DynamicResource with the visibility of the menu options bound to the properties, however, it seems that the DynamicResource is created only once, at runtime. Is this true? What I would like to do is have the menu generated each time, which will take into account the property changes on the data object. Please see the following XAML snippet: <Border DockPanel.Dock="Right" Margin="4,4,4,4" BorderBrush="Gray" BorderThickness="1" CornerRadius="3" > <igDP:XamDataGrid Height="Auto" Width="Auto" Style="{DynamicResource DefaultInfragisticsGridStyle}" Name="axeDataGrid" ActiveRecord="{Binding Path=SelectedItem, Mode=TwoWay}" DataSource="{Binding Path=Axes}" ContextMenuOpening="ContextMenuOpeningHandler"> <igDP:XamDataGrid.Resources> <Style TargetType="{x:Type igDP:DataRecordPresenter}" BasedOn="{x:Static Themes:DataPresenterAero.DataRecordPresenter}"/> <ContextMenu x:Key="RecordContextMenu"> <ContextMenu.Resources> <BooleanToVisibilityConverter x:Key="booleanToVisibilityConverter"/> </ContextMenu.Resources> <MenuItem Header="Cancel Axe" Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.CancelAxe}" Visibility="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.IsCancelAxeAllowed, Converter={StaticResource booleanToVisibilityConverter}, Mode=OneWay}"/> <MenuItem Header="Create RFQ" Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.CreateRFQ}" Visibility="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type igDP:XamDataGrid}}, Path=DataContext.IsCreateRfqAllowed, Converter={StaticResource booleanToVisibilityConverter}, Mode=OneWay}"/> </ContextMenu> <Style TargetType="{x:Type igDP:DataRecordCellArea}"> <Setter Property="ContextMenu" Value="{DynamicResource RecordContextMenu}" /> </Style>

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  • CSS window height problem with dynamic loaded css

    - by Michael Mao
    Hi all: Please go here and use username "admin" and password "endlesscomic" (without wrapper quotes) to see the web app demo. Basically what I am trying to do is to incrementally integrate my work to this web app, say, every nightly, for the client to check the progress. Also, he would like to see, at the very beginning, a mockup about the page layout. I am trying to use the 960 grid system to achieve this. So far, so good. Except one issue that when the "mockup.css" is loaded dynamically by jQuery, it "extends" the window to the bottom, something I do not wanna have... As an inexperienced web developer, I don't know which part is wrong. Below is my js: /* master.js */ $(document).ready(function() { $('#addDebugCss').click(function() { alertMessage('adding debug css...'); addCssToHead('./css/debug.css'); $('.grid-insider').css('opacity','0.5');//reset mockup background transparcy }); $('#addMockupCss').click(function() { alertMessage('adding mockup css...'); addCssToHead('./css/mockup.css'); $('.grid-insider').css('opacity','1');//set semi-background transparcy for mockup }); $('#resetCss').click(function() { alertMessage('rolling back to normal'); rollbackCss(new Array("./css/mockup.css", "./css/debug.css")); }); }); function alertMessage(msg) //TODO find a better modal prompt { alert(msg); } function addCssToHead(path_to_css) { $('<link rel="stylesheet" type="text/css" href="' + path_to_css + '" />').appendTo("head"); } function rollbackCss(set) { for(var i in set) { $('link[href="'+ set[i]+ '"]').remove(); } } Something should be added to the exteral mockup.css? Or something to change in my master.js? Thanks for any hints/suggestions in advance.

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  • C# Using Reflection to copy base class properties

    - by David Liddle
    I would like to update all properties from MyObject to another using Reflection. The problem I am coming into is that the particular object is inherited from a base class and those base class property values are not updated. The below code copies over top level property values. public void Update(MyObject o) { MyObject copyObject = ... FieldInfo[] myObjectFields = o.GetType().GetFields( BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance); foreach (FieldInfo fi in myObjectFields) { fi.SetValue(copyObject, fi.GetValue(o)); } } I was looking to see if there were any more BindingFlags attributes I could use to help but to no avail.

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  • C# Implementing a custom stream writer-esque class

    - by Luke
    How would I go about writing my own stream manipulator class? Basically what I'm trying to wrap my head around is storing the reference to the underlying stream in the writer. For example, when writing to a memory stream using a StreamWriter, when a Write() is made, the underlying memory stream is written to. Can I store the reference to an underlying stream without using pointers or unsafe code? Even if it was just a string I wanted to "write" to. Really this has little to do with stream writers, and I'm just wondering how I could store references in a class. The StreamWriter was the best example I could come up with for this.

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  • dynamic ContextMenu in TreeView vs. MVVM

    - by bitbonk
    I have a tree of ViewModels displayed as a TreeView (using HierarchicalDataTemplate). Each ViewModel instance has different commands that can be executed on it wich again are exposed as a list of command ViewModels for each item ViewModel. How can I create a single ContextMenu that opens at the TreeViewItem that was rightclicked and that populates its commands from the underlying item ViewModel's command ViewModels list? All in a decent MVVM fashion ...

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  • Zend form and dynamic file upload

    - by DoomStone
    Hello there i'm trying to create a form with Zend_Form that will enable my user to upload a unlited number of files to my site, witch is done by javascript. Something like <script type="text/javascript"> $(document).ready(function(){ var image_uploade_i = 0; $('#upload_more').click(function() { image_uploade_i++; $('#upload_list').append('<div id="image_uploade_id_'+image_uploade_i+'" style="display: none;"><input type="file" name="image[]" /><br /></a>'); $('#image_uploade_id_'+image_uploade_i).slideDown('slow'); }); }); </script> <?=$this->translate('Add images')?> <form action="" method="post" enctype="multipart/form-data"> <div id="upload_list"> <input type="file" name="image[]" /><br /> <input type="file" name="image[]" /><br /> <input type="file" name="image[]" /><br /> </div> <a href="#" id="upload_more"><?=$this->translate('Upload another image')?></a><br /> <input type="submit" name="image_uploade" value="<?=$this->translate('Upload images')?>" /> </form> But i'm am unable to find out how i can create something like this with Zend_From, the only reason i want to use Zend_Form on this thoug is for validation of the uploadet files. $element = new Zend_Form_Element_File('image'); $element->setRequired(true) ->setLabel('Profile image') ->setDestination($store) ->setValueDisabled(true) ->addValidator(new Zend_Validate_File_ImageSize(array( 'minheight' => 100, 'minwidth' => 150, 'maxheight' => 1920, 'maxwidth' => 1200))) // File must be below 1.5 Mb ->addValidator(new Zend_Validate_File_FilesSize(array('max' => 1572864))) ->addValidator(new Zend_Validate_File_IsImage()); If any 1 can help me set this up would i be verry great full :D

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  • Dynamic Colorbox galleries using Ajax

    - by Gobitron
    Hi, I am new to jQuery / AJAX. I have a page that uses colorbox to display photo galleries. The page displays only one image from each gallery. When clicked, a colorbox opens up with all of the photos from that gallery. These inner photo references (for all photos from all galleries) are hidden on the page in an invisible div. The page is a PHP generated page. The galleries/photos are being populated via Picasa. All of the above works fine, but instead of loading all of the images from all galleries on page load (via PHP), I'd like to load only the requested gallery into the colorbox via AJAX. So far, I have a test page which can insert the proper links into a div on the page, but the Colorbox won't pick up on these links. This is where I need help. How can I get Colorbox to recognize the links generated by my AJAX call? The colorbox scripts sit in the header: <script type="text/javascript" src="libs/js/jquery.colorbox.js"></script> <script type="text/javascript"> //Writing out the ColorBox command for each album $(document).ready(function(){ <?php $setnum = 0; foreach ($albumIds as $albumId){ echo "\t\t\t$(\"a[rel='set" . $setnum . "']\").colorbox({maxWidth:\"640px\", maxHeight:\"480px\"});\n"; $setnum++; } ?> }); </script> Here is my get JSON code located in the body section of the page: $.getJSON("myserv.php",formContent, function(json){ var photos = json.data.items; var numpics = json.data.items.length; var pointer = 1; while (pointer < numpics){ var stuffineed = photos[pointer].media.image.url; $("#ajaxBox").append("<a href='" + stuffineed + "' rel='set" + pointer +"'>" + photos[pointer].media.image.url + "</a><br />"); pointer++; } }); //End json Again, I can get the AJAX to populate the div correctly, but the colorbox script isn't picking up these images. Any help would be greatly appreciated.

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  • ensime scala errors (class scala.Array not found, object scala not found)

    - by Jeff Bowman
    I've installed ensime according to the README.md file, however, I get errors in the inferior-ensime-server buffer with the following: INFO: Fatal Error: scala.tools.nsc.MissingRequirementError: object scala not found. scala.tools.nsc.MissingRequirementError: object scala not found. at scala.tools.nsc.symtab.Definitions$definitions$.getModuleOrClass(Definitions.scala:516) at scala.tools.nsc.symtab.Definitions$definitions$.ScalaPackage(Definitions.scala:43) at scala.tools.nsc.symtab.Definitions$definitions$.ScalaPackageClass(Definitions.scala:44) at scala.tools.nsc.symtab.Definitions$definitions$.UnitClass(Definitions.scala:89) at scala.tools.nsc.symtab.Definitions$definitions$.init(Definitions.scala:786) at scala.tools.nsc.Global$Run.(Global.scala:593) at scala.tools.nsc.interactive.Global$TyperRun.(Global.scala:473) at scala.tools.nsc.interactive.Global.newTyperRun(Global.scala:535) at scala.tools.nsc.interactive.Global.reloadSources(Global.scala:289) at scala.tools.nsc.interactive.Global$$anonfun$reload$1.apply(Global.scala:300) at scala.tools.nsc.interactive.Global$$anonfun$reload$1.apply(Global.scala:300) at scala.tools.nsc.interactive.Global.respond(Global.scala:276) at scala.tools.nsc.interactive.Global.reload(Global.scala:300) at scala.tools.nsc.interactive.CompilerControl$$anon$1.apply$mcV$sp(CompilerControl.scala:81) at scala.tools.nsc.interactive.Global.pollForWork(Global.scala:132) at scala.tools.nsc.interactive.Global$$anon$2.run(Global.scala:192) also: INFO: Fatal Error: scala.tools.nsc.MissingRequirementError: class scala.Array not found. scala.tools.nsc.MissingRequirementError: class scala.Array not found. at scala.tools.nsc.symtab.Definitions$definitions$.getModuleOrClass(Definitions.scala:516) at scala.tools.nsc.symtab.Definitions$definitions$.getClass(Definitions.scala:474) at scala.tools.nsc.symtab.Definitions$definitions$.ArrayClass(Definitions.scala:217) at scala.tools.nsc.backend.icode.TypeKinds$REFERENCE.(TypeKinds.scala:258) at scala.tools.nsc.backend.icode.GenICode$ICodePhase.(GenICode.scala:55) at scala.tools.nsc.backend.icode.GenICode.newPhase(GenICode.scala:43) at scala.tools.nsc.backend.icode.GenICode.newPhase(GenICode.scala:25) at scala.tools.nsc.Global$Run$$anonfun$4.apply(Global.scala:606) at scala.tools.nsc.Global$Run$$anonfun$4.apply(Global.scala:605) at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:62) at scala.collection.immutable.List.foreach(List.scala:46) at scala.tools.nsc.Global$Run.(Global.scala:605) at scala.tools.nsc.interactive.Global$TyperRun.(Global.scala:473) at scala.tools.nsc.interactive.Global.newTyperRun(Global.scala:535) at scala.tools.nsc.interactive.Global.reloadSources(Global.scala:289) at scala.tools.nsc.interactive.Global.typedTreeAt(Global.scala:309) at scala.tools.nsc.interactive.Global$$anonfun$getTypedTreeAt$1.apply(Global.scala:326) at scala.tools.nsc.interactive.Global$$anonfun$getTypedTreeAt$1.apply(Global.scala:326) at scala.tools.nsc.interactive.Global.respond(Global.scala:276) at scala.tools.nsc.interactive.Global.getTypedTreeAt(Global.scala:326) at scala.tools.nsc.interactive.CompilerControl$$anon$2.apply$mcV$sp(CompilerControl.scala:89) at scala.tools.nsc.interactive.Global.pollForWork(Global.scala:132) at scala.tools.nsc.interactive.Global$$anon$2.run(Global.scala:192) Also none of the type identification works for me, I get 'NA' if I get anything at all. C-c t causes emacs to lock up. I'm running: Ubuntu 10.04 (64bit version) emacs 23.1.50.1 ensime from git (as of 3 May 2010) scala is version 2.8.0.RC1 java is 1.6.0_20 (from sun) here is a copy of the log: http://dl.dropbox.com/u/5309017/ensime.log Thanks! Jeff

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  • Cannot redeclare class error when generating PHPUnit code coverage report

    - by Cobby
    Starting a project with Zend Framework 1.10 and Doctrine 2 (Beta1). I am using namespaces in my own library code. When generating code coverage reports I get a Fatal Error about Redeclaring a class. To provide more info, I've commented out the xdebug_disable() call in my phpunit executable so you can see the function trace (disabled local variables output because there was too much output). Here's my Terminal output: $ phpunit PHPUnit 3.4.12 by Sebastian Bergmann. ........ Time: 4 seconds, Memory: 16.50Mb OK (8 tests, 14 assertions) Generating code coverage report, this may take a moment.PHP Fatal error: Cannot redeclare class Cob\Application\Resource\HelperBroker in /Users/Cobby/Sites/project/trunk/code/library/Cob/Application/Resource/HelperBroker.php on line 93 PHP Stack trace: PHP 1. {main}() /usr/local/zend/bin/phpunit:0 PHP 2. PHPUnit_TextUI_Command::main() /usr/local/zend/bin/phpunit:54 PHP 3. PHPUnit_TextUI_Command-run() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:146 PHP 4. PHPUnit_TextUI_TestRunner-doRun() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:213 PHP 5. PHPUnit_Util_Report::render() /usr/local/zend/share/pear/PHPUnit/TextUI/TestRunner.php:478 PHP 6. PHPUnit_Framework_TestResult-getCodeCoverageInformation() /usr/local/zend/share/pear/PHPUnit/Util/Report.php:97 PHP 7. PHPUnit_Util_Filter::getFilteredCodeCoverage() /usr/local/zend/share/pear/PHPUnit/Framework/TestResult.php:623 Fatal error: Cannot redeclare class Cob\Application\Resource\HelperBroker in /Users/Cobby/Sites/project/trunk/code/library/Cob/Application/Resource/HelperBroker.php on line 93 Call Stack: 0.0004 322888 1. {main}() /usr/local/zend/bin/phpunit:0 0.0816 4114628 2. PHPUnit_TextUI_Command::main() /usr/local/zend/bin/phpunit:54 0.0817 4114964 3. PHPUnit_TextUI_Command-run() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:146 0.1151 5435528 4. PHPUnit_TextUI_TestRunner-doRun() /usr/local/zend/share/pear/PHPUnit/TextUI/Command.php:213 4.2931 16690760 5. PHPUnit_Util_Report::render() /usr/local/zend/share/pear/PHPUnit/TextUI/TestRunner.php:478 4.2931 16691120 6. PHPUnit_Framework_TestResult-getCodeCoverageInformation() /usr/local/zend/share/pear/PHPUnit/Util/Report.php:97 4.2931 16691148 7. PHPUnit_Util_Filter::getFilteredCodeCoverage() /usr/local/zend/share/pear/PHPUnit/Framework/TestResult.php:623 (I have no idea why it shows the error twice...?) And here is my phpunit.xml: <phpunit bootstrap="./code/tests/application/bootstrap.php" colors="true"> <!-- bootstrap.php changes directory to trunk/code/tests, all paths below are relative to this directory. --> <testsuite name="My Promotions"> <directory>./</directory> </testsuite> <filter> <whitelist> <directory suffix=".php">../application</directory> <directory suffix=".php">../library/Cob</directory> <exclude> <!-- By adding the below line I can remove the error --> <file>../library/Cob/Application/Resource/HelperBroker.php</file> <directory suffix=".phtml">../application</directory> <directory suffix=".php">../application/doctrine</directory> <file>../application/Bootstrap.php</file> <directory suffix=".php">../library/Cob/Tools</directory> </exclude> </whitelist> </filter> <logging> <log type="junit" target="../../build/reports/tests/report.xml" /> <log type="coverage-html" target="../../build/reports/coverage" charset="UTF-8" yui="true" highlight="true" lowUpperBound="50" highLowerBound="80" /> </logging> </phpunit> I have added a tag inside the which seams to hide this problem. I do have another application resource but it doesn't seam to have a problem (the other one is a Doctrine 2 resource). I'm not sure why it is specific to this class, my entire library is autoloaded so their isn't any include/require calls anywhere. I guess it should be noted that HelperBroker is the first file in the filesystem stemming out from library/Cob I am on Snow Leopard with the latest/recent versions of all software (Zend Server, Zend Framework, Doctrine 2 Beta1, Phing, PHPUnit, PEAR).

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  • Dynamic sorting of tables on BIRT without javascript

    - by ebae
    I am using WebViewerExample as my reporting. I am designing reports within Eclipse using report designer. I have a table with several columns. Data is retrieved from database. Is there an easy way to dynamically sort the tables by clicking on the column header names? I tried to pass string as a sorting condition, but it ain't helping. Any ideas?

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  • jQuery: Dynamic image handling (waiting for load)

    - by dclowd9901
    I'm trying to write a plugin that has a built in function to wait until all images that are on the page to be loaded before it executes itself. $(window).load() only works if it's the initial load of the page, but if someone wants to pull down some HTML through AJAX that contains images, it doesn't work. Is there any good way of doing this AND implementing it so that it can be self-contained in the plug-in? I've tried looping over $('img').complete, and I know that doesn't work (the images never load, and the browser crashes under a "script takes too long to complete" bug). For an example of what I'm trying to do, visit the page I'm looking to house the plugin at: http://www.simplesli.de If you go to the "more uses" section (click it on the nav bar), you'll see that the image slideshow won't load properly. I know the current code doesn't work, but it's just holding place until I figure something out.

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  • Referencing a module component class in GridView

    - by keeg
    I'm loading bootstrap into a module: 'modules'=>array( 'admin'=>array( 'preload'=>array('bootstrap'), 'components'=>array( 'bootstrap'=>array( 'class'=>'ext.bootstrap.components.Bootstrap', 'responsiveCss' => true, ), ) ), ), in a GridView I'm trying to create a TbButtonColumn: array( 'class'=>'bootstrap.widgets.TbButtonColumn', 'htmlOptions'=>array('style'=>'width: 50px'), ), This returns a CException Property "CWebApplication.bootstrap" is not defined. as it points to a bootstrap in the main config app which obviously doesn't exist, how do I reference bootstrap when it is loaded in the module? I tried: components.bootstrap.widgets.TbButtonColumn admin.components.bootstrap.widgets.TbButtonColumn admin.bootstrap.widgets.TbButtonColumn

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  • accessing layer from class

    - by Mike
    I am creating a rounded corner UIImageView, but this image is created inside a class, using among other instructions, these following: myImageView.layer.cornerRadius = 20.0; myImageView.layer.masksToBounds = YES; myImageView.layer.borderColor = [UIColor darkGrayColor].CGColor; myImageView.layer.borderWidth = 1.0; but Xcode is yelling at me telling me unknown 'cornerRadius' component of a property unknown 'masksToBounds' component of a property unknown 'borderColor' component of a property unknown 'borderWidth' component of a property I know this code is valid, because I have created images like that before, but never inside a class. Why is this happening? how to solve that? thanks.

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  • How to fix notifyDataSetChanged/ListView problems in dynamic Adapter wrapper Android

    - by ipaterson
    Summary: Trying to dynamically add heading rows to a ListView via a custom adapter wrapper. ListView is having trouble keeping the scroll position in sync. Runnable demo project provided. I would like to dynamically add items to a list based on the values in a CursorAdapter, several positions ahead of what the user is currently viewing. To do this, I have an adapter that wraps the CursorAdapter and keeps the new content indexed in a SparseArray. The ListView needs to be updated when items are added to the custom adapter, but I have met a lot of pitfalls trying to get that to work and would love some advice. The demo project can be downloaded here: http://dl.dropbox.com/u/15334423/DynamicSectionedList.zip In the demo, the headings are added dynamically by looking ahead 10 places to find the correct position where the list items switch to the next letter. Each implementation of notifyDataSetChanged has problems as described: Demo 1 This demo shows the importance of notifyDataSetChanged(). On clicking anything, the app will crash. This is due to some sanity checking in ListView... mItemCount != adapter.getItemCount(). Moral is, we need to notify the list that data has changed. Demo 2 The natural next step is to notify the ListView of changes when changes occur. Unfortunately, doing so while the ListView is scrolling firmly breaks all touch interaction until the app switches out of touch mode. You will need to "fling scroll" far enough to generate new headings in order to notice this. Tapping the screen will not cause the scroll to stop, and once stopped none of the list items will be clickable. This is due to some if (!mDataChanged) { /* do very important stuff */ } code in AbsListView.onTouchEvent(). Demo 3 To fix this, Demo 3 introduces a pendingChanges flag and the custom Adapter gains a notifyDataSetChangedIfNeeded() which can be called by the ListView once it has entered a "safe" state for changes. The first point where changes must be notified is in ListView.layoutChildren(), so I overrode that method to first notify of changes if needed, then call through. Fling past at least one heading then click a list item. This doesn't quite work right, though I'm not totally sure why. Tapping or selecting an item with the keyboard/trackball causes the list to refresh without properly syncing the old position. It scrolls to the top of the list which is not acceptable. Demo 4 The scroll problem in Demo 3 can be conquered, at least in touch mode. By adding a call to notifyDataSetChangedIfNeeded() on touch down, the data change happens to take place at such a time that all touch interaction works as expected and the list position is properly synced. However, I can't find an analog for that when the device is not in touch mode, not to mention the fact that it definitely seems like a hack. The list almost always scrolls back to the top, I can't find out what causes it to occasionally maintain the correct position. Since Android is fighting me at each step of the way, I feel like there should be a better approach. Please try the demo, if any fixes can be applied to get it working that would be great! Many thanks to anyone who can look into this, hopefully if we can get the code working it will be useful for others trying to accomplish the same optimization for lists with headings.

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  • Kohana 3: How to find the active item in a dynamic menu

    - by Svish
    Maybe not the best explanation, but hear me out. Say I have the following in a config file called menu.php: // Default controller is 'home' and default action is 'index' return array( 'items' => array( 'Home' => '', 'News' => 'news', 'Resources' => 'resources', ), ); I now want to print this out as a menu, which is pretty simple: foreach(Kohana::config('menu.items') as $title => $uri) { echo '<li>' . HTML::anchor($uri, $title) . '</li>'; } However, I want to find the $uri that matches the current controller and action. And if the action is the default one or not. What I want to end up with is that menu item should have id="active-item" if it is the linking to the current controller, but the default action. And id="active-subitem if it is linking to the current controller and the action is not the default one. Hope that made sense... Anyone able to help me out here? Both in how to do this in Kohana 3 and also how it should be done in Kohana 3. I'm sure there are lots of ways, but yeah... any help is welcome :) Examples: domain.com -- Home should be active-item since it is the default controller domain.com/home -- Home should be active-item domain.com/home/index -- Home should be active-item since index is the default action domain.com/resources -- Resources should be active-item domain.com/resources/get/7 -- Resources should be active-subitem since get is not the default action

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  • Symfony dynamic subdomains

    - by Jamie
    Hi all, I'm trying to match subdomains to a customer id in symfony. i.e. i have customer1.example.com and customer2.example.com Domains are stored in a table. When a user goes to customer1.example.com, I would like to get the subdomain, look up the domain name in the database, once matched, it will then deploy the app config for that customer and then store the customer_Id in a global attribute so i know exactly which customer I'm dealing with througout the whole application. The virtual host will have the relevant wildcard servername. Have you managed to achieve this, and if so, how? If not, any ideas would be a great help! I'm thinking about using a filter to do it. :-)

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  • Extracting, then passing raw data into another class - How to avoid copying twice while maintaining

    - by Kache4
    Consider a class Book with a stl container of class Page. each Page holds a screenshot, like page10.jpg in raw vector<char> form. A Book is opened with a path to a zip, rar, or directory containing these screenshots, and uses respective methods of extracting the raw data, like ifstream inFile.read(buffer, size);, or unzReadCurrentFile(zipFile, buffer, size). It then calls the Page(const char* stream, int filesize) constructor. Right now, it's clear that the raw data is being copied twice. Once to extract to Book's local buffer and a second time in the Page ctor to the Page::vector<char>. Is there a way to maintain encapsulation while getting rid of the middleman buffer?

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  • extjs add plugins to dynamic form fields

    - by Anurag Uniyal
    I am creating a form dynamically from the fields returned from server using json e.g. data is "items": [ {"xtype": "textfield", "fieldLabel": "Name", "name": "name"}, {"xtype": "textfield", "fieldLabel": "Description", "name": "description"}, {"xtype": "textarea", "fieldLabel": "Text", "name": "text"} ], Now I want to add a custom plugin to each field usually on client side I do this plugins:new Ext.ux.plugins.MyPlugin() but as my form fields are coming from server, how can I add plugin to field e.g. something like this (but that doesn't work) "plugins": "Ext.ux.plugins.MyPlugin"

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  • jquery set focus on dynamic content?

    - by Alan
    In jquery I've appended a <li> element to an unordered list. How do I focus on the newly created <li> ? If I do the following: $("ul").append('<li><input type="text">hi!</input></li>'); $("li:last").focus(); //doesn't work because new <li> isn't in dom yet the focus doesn't work, as noted above. I know jquery 1.4.2 has a live() event handler which allows you load event handlers to dynamically added elements, but I'm not sure what I'm doing wrong: $(document).ready(function () { $('li').live('load', function () { alert("hi!"); $("li:last").focus(); }); });

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