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• Building a complex view with Three20 - resources?

  - by psychotik

  I'm using three20 for most of my iPhone app. One of the views I need to create is relatively complex. It needs a top bar (under the nav bar) with some controls and label, an image view below this bar (which occupies most of the body) and another bottom bar with more controls and labels (above the tab bar control). I don't have much UI experience - my only experience with anything UI is laying stuff out using CSS, etc on websites. Apple's online doc seems to assume that the reader knows a bunch about rectangles, layouts, frames, etc or is using InterfaceBuilder. And three20 isn't too well documented either. So my question is: Is it possible to design something like what I describe in IB and then still have a three20-based app use it? If so, any tips/pointers on how would be much appreciated. Can you point me to some documentation that explain how views/controls etc are rendered. I'm pretty sure I can figure it out if I find some decent explanation/tutorial for it.

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• Continue overflow:auto behavior when page is resized smaller, instead of shifting to the side?

  - by danielle

  Sorry if the title was confusing; I've included some screen shots to more clearly explain my problem. I have a page that has a side navigation menu on the left, and a main div (with the tables) on the right: When the page is resized to be smaller, the "overflow-x:auto" property of the "main" div brings up a horizontal scrollbar: However, when the window becomes narrow to the point that the "main" div reaches the border of the side navigation menu (with the title "Contents"), the "main" div ceases to continue producing the horizontal scrollbar and instead meshes with the menu: Here is the CSS for the "main" div: #main { height: 100%; width: 65%; min-width: 10%; float:right; overflow-y: auto; overflow-x: auto; padding: 0 20px 20px;} and the left side menu: #sidenav{ margin-left: 20px; float: left; overflow-x:auto; overflow-y:auto;} Both of those divs are encapsulated together in "container": .container { bottom: 20px; left: 0; position: absolute; right: 0; top: 50px; } How can I rewrite my code in such a way that the "main" div will continue to use its horizontal scrollbar, and never cross the boundary of the side navigation menu? Thanks in advance!

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• Is there any legitimate use for bare strings in PHP?

  - by Robert

  This question got me thinking about bare strings. When PHP sees a string that's not enclosed in quotes, it first checks to see if it's a constant. If not, it just assumes it's a string and goes on anyway. So for example if I have echo $foo[bar]; If there's a constant called bar it uses that for the array key, but if not then it treats bar as a bare string, so it behaves just like echo $foo["bar"]; This can cause all kinds of problems if at some future date a constant is added with the same name. My question is, is there any situation in which it actually makes sense to use a bare string?

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• Swig - wrapping C struct

  - by user289637

  Hello everyone, I am trying to write Python wrap for C code which uses struct. modules.c: struct foo { int a; }; struct foo bar; modulues.i %module nepal %{ struct foo { int a; } %} extern struct foo bar; But during compiling I am given error: In function ‘Swig_var_bar_set’: error: ‘bar’ undeclared (first use in this function) Could you be so kind to help me how to correctly define export struct variable ?

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• DataGrid giving error and getting invisible whenever some elements visibility is changed

  - by Tarun

  I have a datagrid in which i have textblocks as one column.Then in the next column i have progress bar over which there is a textblock.On loading row of datagrid,i add these three into lists of textblock and progressbar.I start the first progress bar and after 15-20 minutes next progress bar is started.The next progress bar is getting started fine and after 20 minutes it is getting invisible.The problem is that if i try to make textblock invisible,then the whole Datagrid gets invisible and stops working.After all the tasks in the Datagrid are complete i need to make DataGrid invisible and also when i try to do so,the grid becomes invisible and no other event gets fired.... e.g List txtlist=new List(); i=1; txtlist[i].Visibility=Visibility.Collapsed;

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• add button to navigationbar programatically

  - by mac

  Hi i need to set the button on right side, in navigation bar, programatically , so that if i press the button i will perform some actions, i have created the navigation bar,programatically by navBar=[[UINavigationBar alloc]initWithFrame:CGRectMake(0,0,320,44) ]; similarly i need to add the button , right side of this navigation bar,for that i used, 1) UIView* container = [[UIView alloc] init]; // create a button and add it to the container UIButton* button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 130, 44.01)]; [container addSubview:button]; [button release]; // add another button button = [[UIButton alloc] initWithFrame:CGRectMake(160, 0, 50, 44.01)]; [container addSubview:button]; [button release]; // now create a Bar button item UIBarButtonItem* item = [[UIBarButtonItem alloc] initWithCustomView:container]; // set the nav bar's right button item self.navigationItem.rightBarButtonItem = item; [item release]; 2) UIImage *im; im=[UIImage imageNamed:@"back.png"]; [button setImage:im forState:UIControlStateNormal]; [im release]; backButton = [[UIBarButtonItem alloc] initWithCustomView:button]; [backButton setImageInsets:UIEdgeInsetsMake(0, -10,5, 5)]; [self.navigationItem setRightBarButtonItem:backButton]; 3) UIBarButtonItem *refreshItem = [[UIBarButtonItem alloc] initWithTitle:@"button" style:UIBarButtonItemStylePlain target:self action:@selector(refreshLogsAction:)]; self.navigationItem.rightBarButtonItem = refreshItem; [refreshItem release]; i tried all these type of codings , no use, these codes are not displaying the button at rigth side,please help me. thanks in advance,

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• How to unit test this simple ASP.NET MVC controller

  - by Frank Schwieterman

  Lets say I have a simple controller for ASP.NET MVC I want to test. I want to test that a controller action (Foo, in this case) simply returns a link to another action (Bar, in this case). How would you test this? (either the first or second link) My implementation has the same link twice. One passes the url throw ViewData[]. This seems more testable to me, as I can check the ViewData collection returned from Foo(). Even this way though, I don't know how to validate the url itself without making dependencies on routing. The controller: public class TestController : Controller { public ActionResult Foo() { ViewData["Link2"] = Url.Action("Bar"); return View("Foo"); } public ActionResult Bar() { return View("Bar"); } } the "Foo" view: <%@ Page Title="" Language="C#" Inherits="System.Web.Mvc.ViewPage" MasterPageFile="~/Views/Shared/Site.Master"%> <asp:Content ContentPlaceHolderID="MainContent" runat="server"> <%= Html.ActionLink("link 1", "Bar") %> <a href="<%= ViewData["Link2"]%>">link 2</a> </asp:Content>

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• How to catch the exception in initialization list?

  - by skydoor

  Hi I have a question about how to catch the exception in the initialization list. For example, we have a class Foo derived from Bar class Foo { public: Foo(int i) {throw 0; } } class Bar : public Foo{ public: Bar() : Foo(1) {} }

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• How to hide Div tag without page refresh

  - by Priyanka

  Hello.I have a page where i add,edit and delete menus.For add and edit I have a separate page.When i add or edit menus,i come on the main page where i display the menus,so i print messages as "menu added" or "menu edited".But when i delete the menu,my page does not get refreshed,because i have written the delete code on the same page sing ajax function as follows:$.ajax( { type: "POST", url: "delete_menu.php", data: data, cache: false, success: function() { parent.fadeOut('slow', function() {$(this).remove();}); document.getElementById('showDiv').style.display = ''; } } The page does not get refreshed,so the div containing messages like "menus added or edited" does not get hide.I have given id to Div as showDiv. So can anyone help me to solve this problem.Also when i delete,can anyone tell me how do i display message as "menu deleted" in ajax without page refresh.Thanks in advance.

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• .NET compact framework - barcode scanner

  - by dominolog

  Hello I have Motorola MC55 with Windows Mobile 6.5 on-board. This nice palm contains also an embedded bar-code scanner. My question is - Will I need anything special in .NET CF in order to use the bar-code scanner? I would expect that the bar-code are read as normal strings and delivered as keyboard events? Is any special .NET CF library necessary? Thanks for help Dominik

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• BindData to ITemplate for GridView in code behind

  - by tbischel

  How do I programmatically bind data to a custom item template column for a GridView? So far, I've done something similar to this: TemplateField foo = new TemplateField(); foo.ItemTemplate = new bar(); this.GridView1.Columns.Add(foo); where bar is like this: public class bar : ITemplate { public bar() { } public void InstantiateIn(Control container) { DropDownList ddl = new DropDownList(); container.Controls.Add(ddl); } } (the actual dropdownlist is populated) But ITemplate doesn't contain any kind of data binding properties to implement, and the TemplateField class doesn't seem to have any either... What do I do?

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• How to tell if XUL menupopup opens down or up?

  - by Jon

  I have an extension that can be placed on any toolbar (like the bookmarks, menu or status bars). In general, the context menu opens downward, but when placed on the status bar and Firefox is closed to the bottom of the screen, the context menu opens upward. I'd like to try reordering the context menu based on its up or down orientation, so that the same options are always closest to the mouse. For example, when opened downward it appears like this: -- (mouse) --------------- - MenuItem A - --------------- - MenuItem B - --------------- - MenuItem C - --------------- - ....... - --------------- When it opens upwards its like this: --------------- - MenuItem A - --------------- - MenuItem B - --------------- - MenuItem C - --------------- - ....... - --------------- -- (mouse) However, I'd like "MenuItem A" to appear closest to the mouse at all times, since its the most common item. I can render the items dynamically, so I really just need to find out the orientation.

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• Help porting javascript function to jQuery - learning tool

  - by chibineku

  I am just learning jQuery and I wanted to see what I could do with the function below. This function adds or removes css classes to create a pull down menu (it is in fact Stu Nicholl's well known pull down menu). But I'm not getting very far (I've been learning jQuery for approximately an hoour now, so my DOM traversal isn't quite up there yet). I am curious to see how neat and elegant it can become using jQuery, and thought I'd see what you guys could come up with. Here is the existing function: var getEls = document.getElementById("menu").getElementsByTagName("LI"); var getAgn = getEls; for (var i=0; i<getEls.length; i++) { getEls[i].onclick=function() { for (var x=0; x<getAgn.length; x++) { getAgn[x].className=getAgn[x].className.replace("unclick", ""); getAgn[x].className=getAgn[x].className.replace("click", "unclick"); } if ((this.className.indexOf('unclick'))!=-1) { this.className=this.className.replace("unclick", "");; } else { this.className+=" click"; } } } } My first failure started like this: $(document).ready(function() { $('#menu > li').click(function() { $('#menu >li > ul').toggleClass('unclick'); }); }); That works as far as it goes, but the next bit proved tricky. So, if anyone feels like having a go, please be my guest :)

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• Javascript ContextMenu on a TD

  - by Dave

  If I attach a context menu to a td, it fires okay for text in the TD, but if I add a div to the TD, the context menu will not fire when right clicking on the div. How can I make the context menu fire when anything, data or divs, are right clicked in the td?

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• ANDing javascript objects together

  - by Jonas

  I ran across this chunk of code (modified) in our application, and am confused to how it works: function someObject() { this.someProperty = {}; this.foo = { bar: { baz: function() { return "Huh?" } } }; this.getValue = function() { return (this.someProperty && this.foo.bar && this.foo.bar.baz && this.foo.bar.baz()) || null; } } function test() { var o = new someObject(); var val = o.getValue(); alert(val); } when you call the test() function, the text "Huh?" is alerted. I'm not sure how the result of getValue is returning that, I would've thought doing A && B && C && D would have returned true, rather than the value of D.

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• Creating java class with annotated fields in runtime

  - by Sarmun

  The problem is that I need to create in runtime a class like this: public class Foo { @Bar int value0; @Bar int value1; @Bar int value2; .... } with number of fields being decided at runtime. I was looking at Javassist, and there you can create a new class, and add fields to it, but I haven't found a way to annotate those fields.

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• Regex: Matching a space-joined list of words, excluding last whitespace

  - by Jesper

  How would I match a space separated list of words followed by whitespace and some optional numbers? I have this: >>> import re >>> m = re.match('(?P<words>(\w+\s+)+)(?P<num>\d+)?\r\n', 'Foo Bar 12345\r\n') >>> m.groupdict() {'num': '12345', 'words': 'Foo Bar '} I'd like the words group to not include the last whitespace(s) but I can't figure this one out. I could do a .strip() on the result but that's not as much fun :) Some strings to test and wanted result: 'Foo & Bar 555\r\n' => {'num': '555', 'words': 'Foo & Bar'} 'Hello World\r\n' => {'num': None, 'words': 'Hello World'} 'Spam 99\r\n' => {'num': 99, 'words': 'Spam'} 'Number 1 666\r\n' => {'num': 666, 'words': 'Number 1'}

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• java xml pretty printing - preserve empty elements and white pace

  - by javamonkey79

  Basically, I am looking for a java library that will take this: <foo><bar> </bar><baz>yadda</baz></foo> And pretty print it to this: <?xml version="1.0" encoding="UTF-8"?> <foo> <bar> </bar> <baz>yadda</baz> </foo> e.g. preserving whitespace AND blank elements The closest I have got was with dom4j like so: OutputFormat format = OutputFormat.createPrettyPrint(); format.setTrimText( false ); However, this does not honor the whitespace unless the element contains other character data. I'm not opposed to writing something on my own, but I would think this has already been done, why reinvent the wheel?

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• Toggling list image and expand all jquery accordion w/ unordered lists

  - by Evan

  I have a functioning jquery accordion using pure unordered lists. I'm trying to incorporate 2 pieces of functionality. Here is my functioning accordion code and a demo of it working. http://jsbin.com/itibi4/ Toggling Arrows. i'm tring to get the parent bullets to be a toggling arrow and point down when clicked while the child bullets stay as bullets instead of an arrow. Would I be able to get some help with this? .inactive { background-image:url("http://img547.imageshack.us/img547/4103/arrowp.gif"); background-position:4px -31px; background-repeat:no-repeat; cursor:pointer; padding-left:20px; padding-top:10px; } .active { background-image: url("http://img547.imageshack.us/img547/4103/arrowp.gif"); background-position: 4px 12px; background-repeat:no-repeat; font-weight:bold; } Expand All / Collapse All also, i'm trying to incorporate an expand all / collapse all functionality. this is code to the same demo the code is from a previous project, which i've added below the unordered list menu, but i'm having difficulty incorporating it into this project. Would I be able to get some help with this? $('.swap').click(function() { if($(this).text() == 'Click to Collapse All FAQs') { $('ul.menu').slideUp('normal'); $('ul.menu li a').removeClass('active'); $(this).text($(this).text() == 'Click to Expand All FAQs' ? 'Click to Collapse All FAQs' : 'Click to Expand All FAQs'); } else { $('ul.menu').slideDown('normal'); $('ul.menu li a').addClass('active'); $(this).text($(this).text() == 'Click to Expand All FAQs' ? 'Click to Collapse All FAQs' : 'Click to Expand All FAQs'); } } Thank you so much for your help! Evan

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• Static lib that links another static lib and qmake? Odd linking error

  - by Dan O

  I have two qt .pro files, both using the lib TEMPLATE and staticlib CONFIG. The first library (lets call it 'core') is a dependency for the second lib (I'll call it 'foo'). In fact, there's a class in foo that extends a class in core, I will call this class Bar. When I instantiate the class (which is defined and implemented in foo, but extends a class (Bar) from core) in another project (not a lib) I get the following linking error: /usr/bin/ld: Undefined symbols: Bar::Bar() Basically, the linker cannot find the class in the core lib that has been derived in the foo lib, but ONLY when I instantiate the class in a third project that is using both libs. Is this behaviour expected? Regards, Dan O Update: I fixed it by directly invoking the Bars constructor in the third project before using derived class... does anyone know why I need to do this?

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• Calculate total batch upload transfer percent with limited information

  - by GONeale

  Hi there, I have a system which uploads to a server file by file and displays a progress bar on file upload progress, then underneath a second progress bar which I want to indicate percentage of batch complete across all files queued to upload. Information and algorithms I can work out are: Bytes Sent / Total Bytes To Send = First progress bar (eg. 512KB of 1024KB (50%)) That works fine. However supposing I have two other files left to upload, but both file sizes are unknown (as this is only known once the file is about to commence upload, at which point it is compressed and file size is determined) how would I go about making my third progress bar? I didn't think this would be possible as I would need "Total Bytes Sent" / "Total Bytes To Send", to replicate the logic of my first progress bar on a larger scale, however I did get a version working: "Current file number we are on" / "total number of files to send" returning the percentage through the batch, however obviously will not incrementally update and it's pretty crude. So on further thinking I thought if I could incorporate the current file % with this algorithm I could perhaps get the correct progress percentage of my batch's current point. I tried this algorithm, but alas to no such avail (sorry to any math heads, it's probably quite apparent why it won't work) ("Current file number we are on" / "total number of files to send") * ("Bytes Sent" / "Total Bytes To Send") For example I thought I was on the right track when testing with this example: 2/3 (2nd of 3rd file) = 66% (this is right so far) but then when I added * 0.20 (for indicating only 20% of 2nd file has uploaded) we went back to 13%. What I need is only a little over 33%! I did try the inverse at 0.80 and a (2/3 * (2/3 * 0.2)) Can this be done without knowing entire bytes in batch to upload? Please help! Thank you!

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• bash: function + source + declare = boom

  - by Chen Levy

  Here is a problem: In my bash scripts I want to source several file with some checks, so I have: if [ -r foo ] ; then source foo else logger -t $0 -p crit "unable to source foo" exit 1 fi if [ -r bar ] ; then source bar else logger -t $0 -p crit "unable to source bar" exit 1 fi # ... etc ... Naively I tried to create a function that do: function save_source() { if [ -r $1 ] ; then source $1 else logger -t $0 -p crit "unable to source $1" exit 1 fi } safe_source foo safe_source bar # ... etc ... But there is a snag there. If one of the files foo, bar, etc. have a global such as -- declare GLOBAL_VAR=42 -- it will effectively become: function save_source() { # ... declare GLOBAL_VAR=42 # ... } thus a global variable becomes local. The question: An alias in bash seems too weak for this, so must I unroll the above function, and repeat myself, or is there a more elegant approach? ... and yes, I agree that Python, Perl, Ruby would make my file easier, but when working with legacy system, one doesn't always have the privilege of choosing the best tool.

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• PHPUnit - multiple stubs of same class

  - by keithjgrant

  I'm building unit tests for class Foo, and I'm fairly new to unit testing. A key component of my class is an instance of BarCollection which contains a number of Bar objects. One method in Foo iterates through the collection and calls a couple methods on each Bar object in the collection. I want to use stub objects to generate a series of responses for my test class. How do I make the Bar stub class return different values as I iterate? I'm trying to do something along these lines: $stubs = array(); foreach ($array as $value) { $barStub->expects($this->any()) ->method('GetValue')) ->will($this->returnValue($value)); $stubs[] = $barStub; } // populate stubs into `Foo` // assert results from `Foo->someMethod()` So Foo->someMethod() will produce data based on the results it receives from the Bar objects. But this gives me the following error whenever the array is longer than one: There was 1 failure: 1) testMyTest(FooTest) with data set #2 (array(0.5, 0.5)) Expectation failed for method name is equal to <string:GetValue> when invoked zero or more times. Mocked method does not exist. /usr/share/php/PHPUnit/Framework/MockObject/Mock.php(193) : eval()'d code:25 One thought I had was to use ->will($this->returnCallback()) to invoke a callback method, but I don't know how to indicate to the callback which Bar object is making the call (and consequently what response to give). Another idea is to use the onConsecutiveCalls() method, or something like it, to tell my stub to return 1 the first time, 2 the second time, etc, but I'm not sure exactly how to do this. I'm also concerned that if my class ever does anything other than ordered iteration on the collection, I won't have a way to test it.

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• inherit properties and then change some on particular site (css)

  - by Radek

  I have three menus on this test web site. I am learning css and trying all the menus inherit all properties from menu class. The second one looks different and is not clickable. I am happy with the 3rd one, just want to make it horizontal and change its position bit. Could somebody tell me why the second menu is not click-able? how I can make the third menu vertical? I thought that display: block; for li of the 3rd menu would do the trick but I do not know the css path for that li.

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• Go Channels in Ruby

  - by Julius Eckert

  In the Go programming language, you can send Messages around using a construct called "Channels". http://golang.org/doc/effective_go.html#channels I would love to use something like that in Ruby, especially for IPC. Pseudocode of what I want: channel = Channel.new fork do 3.times{ channel.send("foo ") } exit! end Thread.new do 3.times{ channel.send("bar ") } end loop do print channel.recv end # ~> bar foo foo bar bar foo Is there any construct, library or equivalent for Ruby which works like that ? If not: What is the best way to build such an abstraction?

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