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  • how do i scroll through 100 photos in UIScrollView in IPhone

    - by mwangima
    I'm trying to scroll through images being downloaded from a users online album (like in the facebook iphone app) since i can't load all images into memory, i'm loading 3 at a time (prev,current & next). then removing image(prev-1) & image (next +1) from the uiscroller subviews. my logic works fine in the simulator but fails in the device with this error: [CALayer retain]: message sent to deallocated instance what could be the problem below is my code sample - (void)scrollViewDidEndDecelerating:(UIScrollView *)_scrollView { pageControlIsChangingPage = NO; CGFloat pageWidth = _scrollView.frame.size.width; int page = floor((_scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1; if (page1 && page<=(pageControl.numberOfPages-3)) { [self removeThisView:(page-2)]; [self removeThisView:(page+2)]; } if(page0) { NSLog(@"<< PREVIOUS"); [self showPhoto:(page-1)]; } [self showPhoto:page]; if(page<(pageControl.numberOfPages-1)) { //NSLog(@"NEXT "); [self showPhoto:page+1]; NSLog(@"FINISHED LOADING NEXT "); } } -(void) showPhoto:(NSInteger)index { CGFloat cx = scrollView.frame.size.width*index; CGFloat cy = 40; CGRect rect=CGRectMake( 0, 0,320, 480); rect.origin.x = cx; rect.origin.y = cy; AsyncImageView* asyncImage = [[AsyncImageView alloc] initWithFrame:rect]; asyncImage.tag = 999; NSURL *url = [NSURL URLWithString:[pics objectAtIndex:index]]; [asyncImage loadImageFromURL:url place:CGRectMake(150, 190, 30, 30) member:memberid isSlide:@"Yes" picId:[picsIds objectAtIndex:index]]; [scrollView addSubview:asyncImage]; [asyncImage release]; } -(void) removeThisView:(NSInteger)index { if(index<[[scrollView subviews] count] && [[scrollView subviews] objectAtIndex:index]!=nil){ if ([[[scrollView subviews] objectAtIndex:index] isKindOfClass:[AsyncImageView class]] || [[[scrollView subviews] objectAtIndex:index] isKindOfClass:[UIImageView class]]) { [[[scrollView subviews] objectAtIndex:index] removeFromSuperview]; } } } For the record it works OK in the simulator, but not the iphone device itself. any ideas will be appreciated. cheers, fred.

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  • UITableViewCell separator line disappears on scroll

    - by iconso
    I'm trying to have a separator cell with a custom image. I did try something like that: In my cellForRowAtIndexPath: NSString *cellIdentifier = [NSString stringWithFormat:@"identifier"]; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier]; } cell.textLabel.font = [UIFont fontWithName:@"Helvetica" size:19]; cell.textLabel.text = [self.menuItems objectAtIndex:indexPath.row]; cell.textLabel.textColor = [UIColor colorWithRed:128/255.0f green:129/255.0f blue:132/255.0f alpha:1.0f]; cell.backgroundColor = [UIColor whiteColor]; UIImageView *imagView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"reaL.png"]]; imagView.frame = CGRectMake(0, cellHeight, cellWidth, 1); [cell.contentView addSubview:imagView]; switch (indexPath.row) { case 0: cell.imageView.image = [self imageWithImage:[UIImage imageNamed:@"img1.png"] scaledToSize:CGSizeMake(27, 27)]; cell.imageView.highlightedImage = [self imageWithImage:[UIImage imageNamed:@"route.png"] scaledToSize:CGSizeMake(27, 27)]; break; case 1: cell.imageView.image = [self imageWithImage:[UIImage imageNamed:@"img.png"] scaledToSize:CGSizeMake(27, 27)]; cell.imageView.highlightedImage = [self imageWithImage:[UIImage imageNamed:@"money.png"] scaledToSize:CGSizeMake(27, 27)]; break; case 2: cell.imageView.image = [self imageWithImage:[UIImage imageNamed:@"auto.png"] scaledToSize:CGSizeMake(27, 27)]; cell.imageView.highlightedImage = [self imageWithImage:[UIImage imageNamed:@"cars.png"] scaledToSize:CGSizeMake(27, 27)]; break; case 3: cell.imageView.image = [self imageWithImage:[UIImage imageNamed:@"impostazioni.png"] scaledToSize:CGSizeMake(27, 27)]; cell.imageView.highlightedImage = [self imageWithImage:[UIImage imageNamed:@"impostazioni.png"] scaledToSize:CGSizeMake(27, 27)]; // cell.imageView.contentMode = UIViewContentModeScaleAspectFill; break; case 4: cell.imageView.image = [self imageWithImage:[UIImage imageNamed:@"info.png"] scaledToSize:CGSizeMake(27, 27)]; cell.imageView.highlightedImage = [self imageWithImage:[UIImage imageNamed:@"info.png"] scaledToSize:CGSizeMake(27, 27)]; break; default: break; } return cell; When I lunch the app everything is good, but when I scroll the the table, or when I select a cell the separator lines disappear. How I can have a permanent custom line separator?

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  • asp.net ModalPopupExtender : need to show scroll bar when overflow

    - by DavRob60
    I display a gridview in a ModalPopupExtender. When the screen resolution is to small, the pop-up is to big to all be displayed on the page. I just want to add scroll bar to the pop-up when this happen. I know it's probably some CSS, but all I tried did not work. here some base css .modalTextBoxBackground { background-color:Gray; filter:alpha(opacity=70); opacity:0.7; } .modalTextBox { border: 1px solid #FFFFFF; background-color: #0066CC; color: #00FFFF; } here some code from the aspx <asp:Panel ID="OptionSelectionPanel" runat="server" CssClass="modalTextBox"> <asp:UpdatePanel ID="OptionSelectionUpdatePanel" runat="server" UpdateMode="Conditional" > <Triggers> <asp:asyncPostBackTrigger ControlID="TemplateSelection" /> </Triggers> <ContentTemplate> <table class="EditRow"> <tr class="HeaderFooter"> <td colspan="3" class="modalTextBoxTitle"> Add options to Quote </td> </tr> <tr> <td> Manufacturer </td> <td> <asp:DropDownList ID="OptionManufacturerFilter" runat="server" DataSourceID="OptionManufacturerDataSource" DataTextField="Name" DataValueField="Code" AutoPostBack="True" > </asp:DropDownList> </td> </tr> <tr> <td colspan="3"> <asp:GridView ID="NewOptionSelection" runat="server" DataSourceID="AvailableOptions" DataKeyNames="Option_Id" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="false"> <Columns> <asp:BoundField DataField="category_Descr" HeaderText="Category" SortExpression="category_Descr,subcategory_Descr,code" /> <asp:BoundField DataField="subcategory_Descr" HeaderText="Sub-Category" SortExpression="subcategory_Descr,code" /> <asp:BoundField DataField="Manuf_Name" HeaderText="Manufacturer" SortExpression="Manuf_Name"/> </Columns></asp:GridView> </td> </tr> <tr class="HeaderFooter"> <td colspan="3" class="Center"> <asp:Button ID="OptionSelectionClose" runat="server" Text="Close" /> </td> </tr> </table> </ContentTemplate> </asp:UpdatePanel> </asp:Panel> <asp:Button runat="server" ID="HiddenTargetControlForOptionSelectionModalPopup" style="display:none"/> <cc1:ModalPopupExtender ID="OptionSelectionModalPopupExtender" runat="server" TargetControlID="HiddenTargetControlForOptionSelectionModalPopup" PopupControlID="OptionSelectionPanel" BackgroundCssClass="modalTextBoxBackground" />

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  • Resizing a container when child's visibility is changed?

    - by deux11
    When I set the visible property to false for a child in a container, how can I get the container to resize? In the example bellow, when clicking on "Toggle", "containerB" is hidden, but the main container's scrollable area is not resized. (I do not want to scroll through a lot of empty space.) <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Script> <![CDATA[ public function toggle():void { containerB.visible = !containerB.visible; } ]]> </mx:Script> <mx:VBox height="300" width="200" horizontalAlign="center"> <mx:Button label="Toggle" click="toggle()" width="200"/> <mx:VBox id="containerA" height="400" width="150" horizontalAlign="center"> <mx:Button label="A" height="400" width="100"/> </mx:VBox> <mx:VBox id="containerB" height="400" width="150" horizontalAlign="center"> <mx:Button label="B" height="400" width="100"/> </mx:VBox> </mx:VBox>

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  • Make TBODY scrollable in Webkit browsers

    - by Andrew
    I'm aware of this question, but none of the answers work in Safari, Chrome, etc. The accepted strategy (as demonstrated here) is to set the tbody height and overflow properties like so: <table> <thead> <tr><th>This is the header and doesn't scroll</th></tr> </thead> <tbody style="height:100px; overflow:auto;"> <tr><td>content that scrolls</td></tr> <tr><td>content that scrolls</td></tr> <tr><td>content that scrolls</td></tr> <tr><td>content that scrolls</td></tr> <tr><td>content that scrolls</td></tr> <tr><td>content that scrolls</td></tr> <tr><td>content that scrolls</td></tr> </tbody> </table> Unfortunately, this does not work in any webkit browsers. There is a bug report about it that doesn't seem to be a high priority (reported June 05). So my question is: are there alternate strategies that do actually work? I've tried the two-table approach, but it's impossible to guarantee that the header will line up with the content. Do I just have to wait for Webkit to fix it?

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  • Jquery Mobile app focus-based navigation stops working after switching between pages

    - by nawar
    As much as I would like to expand on the details here, I am not able to find relevant information about the root cause of this problem. I am having this issue with my blackberry Webapp which I built using JQM. After few times of navigation from page to page, the application becomes unresponsive on the destination page and I am not able to scroll up/down using the touchpad. If someone had this problem or some clue to the resolution, then that would be helpful. Edit: after doing some research I was able to narrow down the cause of the issue. I am having an issue with focus-based navigation. As I lose focus on the page elements (buttons, input fields, etc) after few transitions among the pages. Edit I had to switch back to the cursor based navigation as it is much faster and do not have the issue faced by focus-based navigation. I removed the entry: <rim:navigation mode=”focus”/> from the config.xml file I found this entry on the blackberry fourms but it haven't solved my problem despite the fact I upgraded my WebWorks SDK to 2.0 from 1.5 http://supportforums.blackberry.com/t5/Web-and-WebWorks-Development/Focus-based-navigation-hangs-device/td-p/455600 Thanks

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  • How to use scrollTop in jQuery when scrolling within a div?

    - by sharataka
    I am trying to get the scrollTop using jQuery to work when the content I am trying to scroll to is located in within a div. The current implementation doesn't do anything javascript <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script> <script> $(document).ready(function (){ //$(this).animate(function(){ $('html, body').animate({ scrollTop: $("#test4").offset().top }, 2000); //}); }); </script> html <div class="row"> <div class = "span12"> <div class = "row"> <div class = "span2"> <div style="height:480px;font:12px Georgia, Garamond, Serif;overflow:auto;"> <div id = "test1">Test1</div> <div id = "test2">Test2</div> <div id = "test3">Test3</div> <div id = "test4">Test4</div> </div> </div> <div class = "row"> <div class = "span8"> Other content on the page </div> </div> </div> </div> </div>

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  • Manage the scrolling of just one element in a ScrollView

    - by morgan1189
    So, I have a ScrollView which has cards on it. ScrollView must be paging enabled. The goal is that the user must be able to scroll it, even if it has only one card. Since i am having the frame of ScrollView of exactly the same width and height as a picture of a card, i decided to increase the width of a ScrollView.contentSize and add one point to it. It turns out to be working fine, but it glitches a bit - when i drag the card to the left, and then grab it again it moves to right a little bit (i guess, for the value of that one point). If i increase the contentSize, the shift increases too (for example, if the content size is increased by ten, the shift value is ten points too). It really irritates me a lot and I want to get rid of it. Any advice on how to do that? Help is much appreciated. UPD: I tried to manually re-center the card in the scrollViewDidEndDecelerating but that didn't help. My guess for now is that the problem can be solved by setting the content offset to the right value (because now it's (0,0)), but I can't figure out how to do it.

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  • Mouse wheel not scrolling in JDialog but working in JFrame

    - by Iulian Serbanoiu
    Hello, I'm facing a frustrating issue. I have an application where the scroll wheel doesn't work in a JDialog window (but works in a JFrame). Here's the code: import javax.swing.*; import java.awt.event.*; public class Failtest extends JFrame { public static void main(String[] args) { new Failtest(); } public Failtest() { super(); setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); setTitle("FRAME"); JScrollPane sp1 = new JScrollPane(getNewList()); add(sp1); setSize(150, 150); setVisible(true); JDialog d = new JDialog(this, false);// NOT WORKING //JDialog d = new JDialog((JFrame)null, false); // NOT WORKING //JDialog d = new JDialog((JDialog)null, false);// WORKING - WHY? d.setTitle("DIALOG"); d.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE); JScrollPane sp = new JScrollPane(getNewList()); d.add(sp); d.setSize(150, 150); d.setVisible(true); } public JList getNewList() { String objs[] = new String[30]; for(int i=0; i<objs.length; i++) { objs[i] = "Item "+i; } JList l = new JList(objs); return l; } } I found a solution which is present as a comment in the java code - the constructor receiving a (JDialog)null parameter. Can someone enlighten me? My opinion is that this is a java bug. Tested on Windows XP-SP3 with 1 JDK and 2 JREs: D:\Program Files\Java\jdk1.6.0_17\bin>javac -version javac 1.6.0_17 D:\Program Files\Java\jdk1.6.0_17\bin>java -version java version "1.6.0_17" Java(TM) SE Runtime Environment (build 1.6.0_17-b04) Java HotSpot(TM) Client VM (build 14.3-b01, mixed mode, sharing) D:\Program Files\Java\jdk1.6.0_17\bin>cd .. D:\Program Files\Java\jdk1.6.0_17>java -version java version "1.6.0_18" Java(TM) SE Runtime Environment (build 1.6.0_18-b07) Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode, sharing) Thank you in advance, Iulian Serbanoiu PS: The problem is not new - the code is taken from a forum (here) where this problem was also mentioned - but no solutions to it (yet) LATER EDIT: The problem persists with jre/jdk_1.6.0_10, 1.6.0_16 also LATER EDIT 2: Back home, tested on linux (Ubuntu - lucid/lynx) - both with openjdk and sun-java from distribution repo and it works (I used the .class file compiled on Windows) !!! - so I believe I'm facing a JRE bug that happens on some Windows configurations.

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  • UITableView having one Cell with multiple UITextFields (some of them in one row) scrolling crazy

    - by Allisone
    I have a UITableView (grouped). In that tableview I have several UITableViewCells, some custom with nib, some default. One Cell (custom) with nib has several UITextfields for address information, thus also one row has zip-code and city in one row. When I get the keyboard the tableview size seems to be adjusted automatically (vs. another viewController in the app with just a scrollview where I had to code this functionality on my own) so that i can scroll to the bottom of my tableview (and see it) even though the keyboard is up. That's good. BUT when I click on a textfield the tableview gets either scrolled up, or down, I can't figure out the logic. It seems to be rather random up/down scrolling / contentOffset setting. So I have bound the Editing Did Begin events of the textfields to a function that has this code. - (IBAction)textFieldDidBeginEditing:(UITextField *)textField { CGPoint pt; CGRect rc = [textField bounds]; rc = [textField convertRect:rc toView:self.tableView]; pt = rc.origin; pt.x = 0; [self.tableView setContentOffset:pt animated:YES]; ... } This, well, it seems to work most of the time, BUT it doesn't work if I click the first textfield (the view jumps so that the second row gets to the top and the first row is out of the current visible view frame) AND it also doesn't work if I first select the zip textfield and next the city textfield (both in one row) or vice versa. If I do so, the tableview seems to jump to the (grouped tableview) top of my viewForHeaderInSection(this section with this mentioned cell with all my textfields) What is is going on ? Why is this happening ? How to fix this ? Edit This on the other hand behaves as expected (for the two Textviews wit same origin.y) if (self.tableView.contentOffset.y == pt.y) { pt.y = pt.y + 1; [self.tableView setContentOffset:pt animated:YES]; }else { [self.tableView setContentOffset:pt animated:YES]; } But this is a stupid solution. I wouldn't like to keep it that way. And this also doesn't fix the wrong jumping, when clicking the first textfield at first.

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  • Mouse wheel not scrolling in JDialog

    - by Iulian Serbanoiu
    Hello, I'm facing a frustrating issue. I have an application where the scroll wheel doesn't work in a JDialog class. Here's the code: import javax.swing.*; import java.awt.event.*; public class Failtest extends JFrame { public static void main(String[] args) { new Failtest(); } public Failtest() { super(); setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); setTitle("FRAME"); JScrollPane sp1 = new JScrollPane(getNewList()); add(sp1); setSize(150, 150); setVisible(true); JDialog d = new JDialog(this, false);// NOT WORKING //JDialog d = new JDialog((JFrame)null, false); // NOT WORKING //JDialog d = new JDialog((JDialog)null, false);// WORKING - WHY? d.setTitle("DIALOG"); d.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE); JScrollPane sp = new JScrollPane(getNewList()); d.add(sp); d.setSize(150, 150); d.setVisible(true); } public JList getNewList() { String objs[] = new String[30]; for(int i=0; i<objs.length; i++) { objs[i] = "Item "+i; } JList l = new JList(objs); return l; } } I found a solution which is present as a comment in the java code - the constructor receiving a (JDialog)null parameter. Can someone enlighten me? My opinion is that this is a java bug. Tested on Windows XP-SP3 with 1 JDK and 2 JREs: D:\Program Files\Java\jdk1.6.0_17\bin>javac -version javac 1.6.0_17 D:\Program Files\Java\jdk1.6.0_17\bin>java -version java version "1.6.0_17" Java(TM) SE Runtime Environment (build 1.6.0_17-b04) Java HotSpot(TM) Client VM (build 14.3-b01, mixed mode, sharing) D:\Program Files\Java\jdk1.6.0_17\bin>cd .. D:\Program Files\Java\jdk1.6.0_17>java -version java version "1.6.0_18" Java(TM) SE Runtime Environment (build 1.6.0_18-b07) Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode, sharing) Thank you in advance, Iulian Serbanoiu PS: The problem is not new - the code is taken from a forum (here) where this problem was also mentioned - but no solutions to it (yet)

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  • CSS Hidden DIV Scroll to view

    - by Dasa
    <DIV CLASS="fact" ID="xnews-4" > <DIV CLASS="storyheadline"> <DIV CLASS="vote up"><A ID="xvotes-4" HREF="javascript:vote(0,258160,4,'f3d3d9c1885fb8508bdbde825d0dfd6e',10)">1</A><A ID="xvote-4" HREF="javascript:vote(0,258160,4,'f3d3d9c1885fb8508bdbde825d0dfd6e',10)"><strong>Vote</strong></A> </DIV> <DIV CLASS="title" ID="title-4"><H2><A HREF="/story.php?title=this-article-is-about-the-song">This article is about the song.</A></H2> </DIV> </DIV> <DIV CLASS="storycontent subtext hidden" ID="plus4" style="display: none;"> <DIV>Posted by <A HREF="/user.php?login=fact-o-matic">fact-o-matic</A> 2 minutes ago | Source: Editorial<SPAN ID="ls_adminlinks-4" style="display:none"> </SPAN> </DIV> <DIV> <DIV CLASS="floatleft"> <A HREF="/story.php?title=this-article-is-about-the-song"> Read More</A>&nbsp;|<SPAN ID="ls_comments_url-4"> <SPAN CLASS="linksummaryDiscuss"><A HREF="/story.php?title=this-article-is-about-the-song#discuss" CLASS="comments">Discuss</A></SPAN></SPAN> <SPAN ID="xreport-4"><SPAN CLASS="linksummaryBury">| <A HREF="javascript:vote(0,258160,4,'f3d3d9c1885fb8508bdbde825d0dfd6e',-10)">Bury</A></SPAN></SPAN> |&nbsp; <span id="emailto-4" style="display:none"></span><span id="linksummaryAddLink"> <a href="javascript://" onclick="var replydisplay=document.getElementById('addto-4').style.display ? '' : 'none';document.getElementById('addto-4').style.display = replydisplay;"> Add To</a>&nbsp; </span> <span id="addto-4" style="display:none"> <div style="position:absolute;display:block;background:#fff;padding:10px;margin:10px 0 0 100px;font-size:12px;border:2px solid #000;"> &nbsp;&nbsp;<a title="submit 'This article is about the song.' to del.icio.us" href="http://del.icio.us/post" onclick="window.open('http://del.icio.us/post?v=4&amp;noui&amp;jump=close&amp;url=http%3A%2F%2Fwww.factmeme.com%2Fstory.php%3Ftitle%3Dthis-article-is-about-the-song&amp;title=This+article+is+about+the+song.', '','toolbar=no,width=700,height=400'); return false;"><img src="http://www.factmeme.com/modules/social_bookmark/images/delicious.png" border="0" alt="submit 'This article is about the song.' to del.icio.us" /></a> &nbsp;&nbsp;<a title="submit 'This article is about the song.' to digg" 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src="http://www.factmeme.com/modules/social_bookmark/images/squidoo.gif" border="0" alt="submit 'This article is about the song.' to squidoo" /></a> &nbsp;&nbsp;<a title="submit 'This article is about the song.' to yahoo" href="http://myweb2.search.yahoo.com/myresults/bookmarklet?u=http%3A%2F%2Fwww.factmeme.com%2Fstory.php%3Ftitle%3Dthis-article-is-about-the-song&amp;title=This article is about the song."><img src="http://www.factmeme.com/modules/social_bookmark/images/yahoomyweb.png" border="0" alt="submit 'This article is about the song.' to yahoo" /></a> &nbsp;&nbsp;<a title="submit 'This article is about the song.' to google" href="http://www.google.com/bookmarks/mark?op=edit&bkmk=http%3A%2F%2Fwww.factmeme.com%2Fstory.php%3Ftitle%3Dthis-article-is-about-the-song&title=This article is about the song."><img src="http://www.factmeme.com/modules/social_bookmark/images/googlebookmarks.gif" border="0" alt="submit 'This article is about the song.' to google" /></a> &nbsp;&nbsp;<a title="submit 'This article is about the song.' to ask" href=" http://myjeeves.ask.com/mysearch/BookmarkIt?v=1.2&t=webpages&url=http%3A%2F%2Fwww.factmeme.com%2Fstory.php%3Ftitle%3Dthis-article-is-about-the-song&title=This article is about the song."><img src="http://www.factmeme.com/modules/social_bookmark/images/ask.gif" border="0" alt="submit 'This article is about the song.' to ask" /></a> <hr /> <p style="font-size:16px;font-weight:bold;margin:0px;">Story URL</p> <script type="text/javascript"> function select_all() { var text_val=eval("document.storyurl.thisurl"); text_val.focus(); text_val.select(); } </script> <form name="storyurl"><input type="text" name="thisurl" size="92" onClick="select_all();" value="http://www.factmeme.com/story.php?title=this-article-is-about-the-song"></form> </div> </span> </DIV> <DIV CLASS="floatright"> <A HREF="/index.php?category=culture">Culture</A> | <A HREF="/search.php?search=Olavi&amp;tag=true">Olavi</A> <A HREF="/search.php?search=Olavi&amp;tag=true">All</A> </DIV> </DIV></DIV> <DIV CLASS="more show"></DIV> </DIV> when I click on the add to, a box is supposed to popup with options to add the story to other websites The problem is that nothing appears to happen, even though something is actually happening, the only way to see the add too box is to click on scroll to view in inspect element in firefox and even then the box appears in the wrong place I am almost certain that it is a positioning conflict but I cant work it out How can I fix it

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  • How can I regain control over a "stuck" scroll bar?

    - by jonsca
    I normally have a lot of tabs open in the browser at one time, which normally doesn't cause any problems. Occasionally, though, the page will have fully rendered, the scroll bar is at the top of its track on the right, but placing the the mouse pointer on the scroll bar does not allow me to get control of it (and using the arrow at the bottom of the scroll bar doesn't work either). This seems to happen to me in both Firefox and Chrome, both latest versions. There is normally no load on the CPU, and while my memory usage can be high (especially with Chrome), I still usually have 25% left. I fear that this is one of those "for your own good" features, to prevent scrolling down a page that may still have elements loading and/or a stuck script, but I'm wondering whether or not there is a setting in Firefox or Chrome (or perhaps Windows in general) that will allow the scroll bar to be "released" even though the browser may be busy? It may be "2002" of me, but I wouldn't mind being able to scroll along gradually, even if the page hasn't had time to fully render all of the images, etc., yet. Does such an advanced setting exist "under the hood"?

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  • Make ListView.ScrollIntoView Scroll the Item into the Center of the ListView (C#)

    - by Kirk
    ListView.ScrollIntoView(object) currently finds an object in the ListView and scrolls to it. If you are positioned beneath the object you are scrolling to, it scrolls the object to the top row. If you are positioned above, it scrolls it into view at the bottom row. I'd like to have the item be scrolled right into the center of my list view if it is currently not visible. Is there an easy way to accomplish this?

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  • Scroll Viewer not visible in wpf DataGrid

    - by cre-johnny07
    I have a datagrid in a grid but the scrollviewer is not visibile even though I made it auto. Below in my code. I can't figure out where's the problem. <Grid Grid.Row="0" Grid.Column="0"> <Grid.RowDefinitions> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto"></RowDefinition> <RowDefinition Height="Auto"></RowDefinition> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"></ColumnDefinition> <ColumnDefinition Width="Auto"></ColumnDefinition> </Grid.ColumnDefinitions> <TextBlock Text="Doctor Name" Grid.Row="0" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Doctor Address" Grid.Row="1" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Entry Note" Grid.Row="2" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Join Date" Grid.Row="3" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Default Discount" Grid.Row="4" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Discount Valid Till" Grid.Row="5" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Employee Name" Grid.Row="6" Grid.Column="0" Margin="5,5,0,0"/> <Grid Grid.Row="7" Grid.Column="0" Grid.ColumnSpan="2"> <Grid.ColumnDefinitions> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> </Grid.ColumnDefinitions> <TextBlock Text="Report Type" Grid.Row="0" Grid.Column="0" Margin="5,5,0,0"/> <ComboBox Grid.Row="0" Grid.Column="1" Name="cmbReportType" Text="{Binding CurrentEntity.ReportType}"/> <Button Grid.Row="0" Grid.Column="2" Name="btnAddDetail" Content="Add Details" Command="{Binding AddDetailsCommand}"/> </Grid> <TextBox Grid.Row="0" Grid.Column="1" Margin="5,5,0,0" Width="190" Name="txtDocName" Text="{Binding CurrentEntity.RefName}"/> <TextBox Grid.Row="1" Grid.Column="1" Margin="5,5,0,0" Width="190" Height="75" Name="txtDocAddress" Text="{Binding CurrentEntity.RefAddress}"/> <TextBox Grid.Row="2" Grid.Column="1" Margin="5,5,0,0" Width="190" Height="100" Name="txtEntryNote" Text="{Binding CurrentEntity.EntryNotes}"/> <Custom:DatePicker Grid.Row="3" Grid.Column="1" Margin="5,3,0,0" Width="125" Name="dtpJoinDate" Height="24" HorizontalAlignment="Left" VerticalAlignment="Top" SelectedDate="{Binding CurrentEntity.DateStarted}" SelectedDateFormat="Short"/> <TextBox Grid.Row="4" Grid.Column="1" Height="25" Width="75" Name="txtDefaultDiscount" HorizontalAlignment="Left" Margin="5,0,0,0" VerticalAlignment="Top" Text="{Binding CurrentEntity.DefaultDiscount}"/> <Custom:DatePicker Grid.Row="5" Grid.Column="1" Margin="5,3,0,0" Width="125" Name="dtpValidTill" Height="24" HorizontalAlignment="Left" VerticalAlignment="Top" SelectedDate="{Binding CurrentEntity.DefaultDiscountValidTill}" SelectedDateFormat="Short"/> <ComboBox Grid.Row="6" Grid.Column="1" Margin="5,3,0,0" Width="190" Height="30" Name="cmbEmployeeName" ItemsSource="{Binding Employees}" DisplayMemberPath="FullName" SelectedIndex="{Binding SelecteIndex}"> </ComboBox> <Custom:DataGrid Grid.Row="8" Grid.Column="0" Grid.ColumnSpan="2" ItemsSource="{Binding XYZ}" AutoGenerateColumns="False" Name="grdTestDept"> <Custom:DataGrid.Columns> <Custom:DataGridTextColumn Binding="{Binding dep_id}" Width="40" Header="ID"/> <Custom:DataGridTextColumn Binding="{Binding dep_name}" Width="125" Header="Name"/> <Custom:DataGridTextColumn Binding="{Binding default_data}" Width="100" Header="Default Data"/> </Custom:DataGrid.Columns> </Custom:DataGrid> </Grid> <Grid Grid.Row="0" Grid.Column="1" Grid.RowSpan="9"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" MinWidth="43"></ColumnDefinition> <ColumnDefinition Width="Auto" MinWidth="150"></ColumnDefinition> <ColumnDefinition Width="Auto" MinWidth="50"></ColumnDefinition> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="34*" ></RowDefinition> <RowDefinition Height="337.88*"></RowDefinition> </Grid.RowDefinitions> <TextBlock Text="Name: " Grid.Row="0" Grid.Column="0" Margin="5,4,0,0" /> <cc:ValueEnabledCombo Grid.Column="1" x:Name="cmbfilEmployeeName" Width="150" Height="30" Margin="5,4,0,0" VerticalAlignment="Top" SelectedIndex="0" ItemsSource="{Binding Employees}" DisplayMemberPath="FullName" SelectedValuePath="EmployeeId" cc:ValueEnabledCombo.SelectionChanged="{Binding SelectionChangedCommand}"> </cc:ValueEnabledCombo> <Button Grid.Column="2" Name="btnReport" Width="50" Content="Report" Height="28" Margin="5,4,0,0" Command="{Binding ReportCommand}" VerticalAlignment="Top" /> <Grid Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3"> <Custom:DataGrid ItemsSource="{Binding DoctorList}" AutoGenerateColumns="False" Name="grdDoctor" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto"> <Custom:DataGrid.Columns> <Custom:DataGridTextColumn Binding="{Binding RefName}" Width="Auto" Header="Doctor Name"/> <Custom:DataGridTextColumn Binding="{Binding EmployeeFullName}" Width="Auto" Header="Employee Name"/> </Custom:DataGrid.Columns> </Custom:DataGrid> </Grid> </Grid> </Grid>

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  • Getting rid of scroll bar for position: absolute inside of position:relative inside of overflow:auto

    - by Marcos
    Hey guys, my first question here on stack overflow. Trying to get something pretty simple to work, I'm sure I'm missing something quite obvious. Still getting used to the "standard" css, too many years working with non-functional ones! Heh. So, sample of what I'm doing: <div style="overflow: auto; border: 1px solid"> hello <div style="position: relative; z-index: 99999; top: 0px; left: 0px;"> <div style="z-index: 99999; overflow-y: hidden; position: absolute; overflow: hidden; height: 200px; left: 0; auto: 0"> <ul> <li >New</li> <li >Old</li> </ul> </div> </div> </div> In essence: The first div is a container, that I would like to automatically overflow as content is added. Inside of that container, I have a popup menu, which I have simplified here. The popup menu appears (as it should) directly under "hello". My problem, however, is that instead of the popup menu "coming out" of the parent, as would be expected by the absolute position, it is actually causing a scrollbar to appear on the parent. I know that if I take otu the "position: relative" it works, but then it no longer appars where I want it (directly under the previous element). What am I missing here? EDIT: Sample here: http://marcos.metx.net/OverflowTest.htm

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  • How to find (in javascript) the current "scroll" offset in mobile safari / iphone

    - by mintywalker
    I'd like to know the x/y offset of the how far the user has "scrolled" within the viewport in mobile safari on the iphone. Put another way, if I (through javascript) reloaded the current page, I'd like to find the values I'd need to pass into window.scrollTo(...) in order to reposition the document/viewport as it is currently. window.pageXOffset always reports 0 jquery's $('body').scrollTop() always reports 0 events have a pageX, but this won't account for the scrolling of the page that happens after you release your finger if your gesture was to "flick" the page up/down. Namely, it'll give me a point when the finger leaves the screen, but that doesn't always match where the page will be after it's finished scrolling. Any pointers?

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  • Determine the width of the vertical scroll bar in a ScrollViewer

    - by juharr
    I'm using a ScrollViewer to display an Image. The Image has a ScaleTransform set as one of it's LayoutTransforms. I've got it setup to fit the width of the image into the ActualSize of the ScrollViewer. My problem is that if the image height requires the vertical scrollbar to be present (I have it set to Auto) then my image is scaled just a little bit to much. I know how to determine if the scrollbar would be present and how to get the correct scale, but I cannot figure out how to determine what the actual width of the scrollbar is. I guess I could just guess at it, but I'd like something that would work if I later add styles to my application that would result in the scrollbars being a different size. Additionally I'm also doing Fit to Height and would need to get the Height of the horizontal scrollbar when it would be visible (I'm assuming that the answer to getting the width of the vertical scrollbar would make getting the height of the horizontal scrollbar obvious).

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  • UITableView crashes when trying to scroll

    - by Ondrej
    Hi, I have a problem with data in UITableView. I have UIViewController, that contains UITableView outlet and few more things I am using and ... It works :) ... it works lovely, but ... I've created an RSS reader class that is using delegates to deploy the data to the table ... and once again, If I'll just create dummy data in the main controller everything works! problem is with this line: rss.delegate = self; Preview looks a little bit broken than here are those RSS reader files on Google code: (Link to the header file on GoogleCode) (Link to the implementation file on Google code) viewDidLoad function of my controller: IGDataRss20 *rss = [[[IGDataRss20 alloc] init] autorelease]; rss.delegate = self; [rss initWithContentsOfUrl:@"http://rss.cnn.com/rss/cnn_topstories.rss"]; and my delegate methods: - (void)parsingEnded:(NSArray *)result { super.data = [[NSMutableArray alloc] initWithArray:result]; NSLog(@"My Items: %d", [super.data count]); [super.table reloadData]; NSLog(@"Parsing ended"); } (void)parsingError:(NSString *)message { NSLog(@"MyMessage: %@", message); } (void)parsingStarted:(NSXMLParser *)parser { NSLog(@"Parsing started"); } Just to clarify, NSLog(@"Parsing ended"); is being executed and I have 10 items in the array. Ok, here's my RSS reader header file: @class IGDataRss20; @protocol IGDataRss20Delegate @optional (void)parsingStarted:(NSXMLParser *)parser; (void)parsingError:(NSString *)message; (void)parsingEnded:(NSArray *)result; @end @interface IGDataRss20 : NSObject { NSXMLParser *rssParser; NSMutableArray *data; NSMutableDictionary *currentItem; NSString *currentElement; id <IGDataRss20Delegate> delegate; } @property (nonatomic, retain) NSMutableArray *data; @property (nonatomic, assign) id delegate; (void)initWithContentsOfUrl:(NSString *)rssUrl; (void)initWithContentsOfData:(NSData *)inputData; @end And this RSS reader implementation file: #import "IGDataRss20.h" @implementation IGDataRss20 @synthesize data, delegate; (void)initWithContentsOfUrl:(NSString *)rssUrl { self.data = [[NSMutableArray alloc] init]; NSURL *xmlURL = [NSURL URLWithString:rssUrl]; rssParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL]; [rssParser setDelegate:self]; [rssParser setShouldProcessNamespaces:NO]; [rssParser setShouldReportNamespacePrefixes:NO]; [rssParser setShouldResolveExternalEntities:NO]; [rssParser parse]; } (void)initWithContentsOfData:(NSData *)inputData { self.data = [[NSMutableArray alloc] init]; rssParser = [[NSXMLParser alloc] initWithData:inputData]; [rssParser setDelegate:self]; [rssParser setShouldProcessNamespaces:NO]; [rssParser setShouldReportNamespacePrefixes:NO]; [rssParser setShouldResolveExternalEntities:NO]; [rssParser parse]; } (void)parserDidStartDocument:(NSXMLParser *)parser { [[self delegate] parsingStarted:parser]; } (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError { NSString * errorString = [NSString stringWithFormat:@"Unable to parse RSS feed (Error code %i )", [parseError code]]; NSLog(@"Error parsing XML: %@", errorString); if ([parseError code] == 31) NSLog(@"Error code 31 is usually caused by encoding problem."); [[self delegate] parsingError:errorString]; } (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict { currentElement = [elementName copy]; if ([elementName isEqualToString:@"item"]) currentItem = [[NSMutableDictionary alloc] init]; } (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if ([elementName isEqualToString:@"item"]) { [data addObject:(NSDictionary *)[currentItem copy]]; } } (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if (![currentItem objectForKey:currentElement]) [currentItem setObject:[[[NSMutableString alloc] init] autorelease] forKey:currentElement]; [[currentItem objectForKey:currentElement] appendString:string]; } (void)parserDidEndDocument:(NSXMLParser *)parser { //NSLog(@"RSS array has %d items: %@", [data count], data); [[self delegate] parsingEnded:(NSArray *)self.data]; } (void)dealloc { [data, delegate release]; [super dealloc]; } @end Hope someone will be able to help me as I am becoming to be quite desperate, and I thought I am not already such a greenhorn :) Thanks, Ondrej

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  • Android: How to detect end of scroll

    - by Mix
    Hi! I need to implement HorizontalScrollView which is scrolled to predefined positions (similar to Home behaviour). It works with slow gestures, but does not work with flings. I hooked to View.onScrollChanged() and it is called when scrolling happened, but I can't determine when scrolling ends. In theory there should be a way to say that fling is over. Is there such API?

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  • blackberry mainscreen vertical scroll

    - by pajton
    I am trying to create a MainScreen with vertical scrolling. From what I've read in the documentation, MainScreen has a VerticalManager inside, so it should be possible to enable vertical scrolling only with proper construction, i.e: super(MainScreen.VERTICAL_SCROLL | MainScreen.VERTICAL_SCROLLBAR); This is not working for me, however. I am creating a screen, adding a couple of LabelFields and no scrollbar, no scrolling at all. I am testing on 8900, OS 5.0. Here is the code I use: public class ExampleScreen extends MainScreen { public ExampleScreen() { super(MainScreen.VERTICAL_SCROLL | MainScreen.VERTICAL_SCROLLBAR); create(); } private void add(String text) { add(new LabelField(text)); } private void create() { add("line 0"); add("line 1"); ... etc ... } } The question is am I doing something wrong? Is there a way to enable vertical scrolling with MainScreen or do I need to create a VerticalManager myself?

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  • SilverLight 3 Beginner question: Scroll with mousewheel and zoom image with panning

    - by JP Hellemons
    Hello, I would like to make a small silverlight app which displays one fairly large image which can be zoomed in by scrolling the mouse and then panned with the mouse. it's similar to the function in google maps and i do not want to use deepzoom. here is what i have at the moment. please keep in mind that this is my first silverlight app: this app is just for me to see it's a good way to build in a website. so it's a demo app and therefor has bad variable names. the initial image is 1800px width. private void sc_MouseWheel(object sender, MouseWheelEventArgs e) { var st = (ScaleTransform)plaatje.RenderTransform; double zoom = e.Delta > 0 ? .1 : -.1; st.ScaleX += zoom; st.ScaleY += zoom; } this works, but could use some smoothing and it's positioned top left and not centered. the panning is like this: found it @ http://stackoverflow.com/questions/741956/wpf-pan-zoom-image and converted it to this below to work in silverlight Point start; Point origin; bool captured = false; private void plaatje_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { plaatje.CaptureMouse(); captured = true; var tt = (TranslateTransform)((TransformGroup)plaatje.RenderTransform) .Children.First(tr => tr is TranslateTransform); start = e.GetPosition(canvasje); origin = new Point(tt.X, tt.Y); } private void plaatje_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) { plaatje.ReleaseMouseCapture(); captured = false; } private void plaatje_MouseMove(object sender, MouseEventArgs e) { if (!captured) return; var tt = (TranslateTransform)((TransformGroup)plaatje.RenderTransform).Children.First(tr => tr is TranslateTransform); double xVerschuiving = start.X - e.GetPosition(canvasje).X; double yVerschuiving = start.Y - e.GetPosition(canvasje).Y; tt.X = origin.X - xVerschuiving; tt.Y = origin.Y - yVerschuiving; } so the scaling isn't smooth and the panning isn't working, because when i click it, the image disappears. thanks in advanced!

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