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  • How to visually represent file size

    - by Keith Williams
    This will be a bit subjective, I'm afraid, but I'd value the advice of the Collective. Our web application lists documents that users can download; standard file navigator stuff: Type Name Created Size ----------------------------------- PDF Doc 1 01/04/2010 15 KB PDF Doc 2 01/04/2010 15 MB Currently we list the file size as text, but I'd like to improve this by having some way of showing visually whether the file is tiny, normal or huge. The reason for this is so that users can scan the list quickly and spot files that are likely to take a long time downloading. My options currently are: Bigger font sizes for bigger files (drawback: the layout can become untidy) Icons (like a wi-fi signal strength indicator; drawback: harder to scan) Keep all sizes in KB so the number of zeroes indicates size (drawback: users have to calculate the "friendly" size in their heads) I know this is quite a minor thing, but I'd appreciate anyone's thoughts on the matter!

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  • Beginning with event listeners

    - by terence6
    I have a simple app, showing picture made of tiled images(named u1, u2,...,u16.jpg). Now I'd like to add some Events to it, so that I can show these images only when proper button is clicked. I've tried doing it on my own, but it's not working. Where am I doing something wrong? Original code : import java.awt.GridLayout; import javax.swing.*; import javax.swing.border.BevelBorder; public class Tiles_2 { public static void main(String[] args) { final JFrame f = new JFrame("Usmiech"); JPanel panel = new JPanel(new GridLayout(4, 4, 3, 3)); JLabel l = new JLabel(); for (int i = 1; i < 17; i++) { String path = "u"+ i+".jpg"; l = new JLabel(new ImageIcon(path)); l.setBorder(BorderFactory.createBevelBorder(BevelBorder.RAISED)); panel.add(l); } f.setContentPane(panel); f.setSize(300, 300); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setVisible(true); } } New code : import java.awt.GridLayout; import javax.swing.*; import javax.swing.border.BevelBorder; import java.awt.event.*; public class Zad_8_1 implements ActionListener { public void actionPerformed(ActionEvent e) { JButton b = (JButton)(e.getSource()); String i = b.getText(); b = new JButton(new ImageIcon("u"+i+".jpg")); } public static void main(String[] args) { final JFrame f = new JFrame("Smile"); JPanel panel = new JPanel(new GridLayout(4, 4, 3, 3)); JButton l = null; for (int i = 1; i < 17; i++) { String path = "u"+ i+".jpg"; l = new JButton(""+i); l.setBorder(BorderFactory.createBevelBorder(BevelBorder.RAISED)); l.setSize(53,53); panel.add(l); } f.setContentPane(panel); f.setSize(300, 300); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setVisible(true); } } This should work like this : http://img535.imageshack.us/img535/3129/lab8a.jpg

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  • Invalid Memory Acess for JavaFX ScrollBar on Snow-Leopard

    - by Mike Caron
    I created the following JavaFX script, which when run, generates an Invalid memory access on Snow-Leopard. What is it about javafx.scene.control.ScrollBar that is causing a memory failure? Stage { title: "Scroll View" scene: Scene { content: [ ScrollBar { min: 0 max: 100 value: 0 blockIncrement: 10 vertical: false } ] } resizable: false } I'm using whatever JavaFX (at least 1.2) that comes with NetBeans 6.8: Product Version: NetBeans IDE 6.8 (Build 200912041610) Java: 1.6.0_17; Java HotSpot(TM) 64-Bit Server VM 14.3-b01-101 System: Mac OS X version 10.6.2 running on x86_64; MacRoman; en_US (nb)

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  • Simple popup java form with at least two fields

    - by nunos
    This is, I suppose, a very simple question for any Java programmer. My question is as simple as this: When the user clicks a button, I want to show a popup form that should have at least two JTextFields and two JLabels, so using JOptionPane.showInputDialog is not a possibility. Thanks.

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  • Error in SQL Syntax ERROR1064

    - by 01010011
    Hi, Everytime I try to create the following table in MySQL command line: CREATE TABLE book(book_id int NOT NULL AUTO_INCREMENT PRIMARY KEY, isbn char(20), title char(20), author_f_name char(20), author_l_name char(20), condition ENUM("as new","very good","good","fair","poor"), price decimal(8,2), genre char(20)); I keep getting this error message: ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL version for the right syntax to use near 'condition ENUM("as new","very good","good","fair","poor"), price decimal(8,2), g' at line 6 I've tried using single quotes and double quotes for the ENUM options. Where did I go wrong?

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  • Grouping swing objects

    - by RenegadeAndy
    Hey. I want to make an object I can add to my java swing application. The object when instantiated would contain an image and 2 labels - is there a way to do this using java swing? If there is - can you point me at an example. I.e i want Myobj icon = new MyObj(pic, label , label); window.addComponent(icon); Cheers Andy

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  • How can I put a horizontal line between vertically ordered elements?

    - by Roman
    I have a set of vertically ordered elements. They are displayed with the following code: JPanel myPanel = new JPanel(); myPanel.setLayout(new BoxLayout(myPanel, BoxLayout.Y_AXIS)); JButton button = new JButton("My Button"); JLabel label = new JLabel("My label!!!!!!!!!!!"); myPanel.add(button); myPanel.add(label); I would like to put a horizontal line between my elements (something like <hr> in html). Does anybody know how it can be done?

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  • Java CountDownLatch used to wait for JFrame to dispose

    - by Brian
    I have referenced this previous question as well as other sources, but cannot get CountDownLatch to work correctly. Background: mainFrame creates new Frame called dataEntryFrame. When dataEntryFrame "Submit" button is clicked, record added to database and dataEntryFrame disposed. At this point, mainFrame should clear and reload a jList that shows all records. Issue: When dataEntryFrame loads, java freezes, dataEntryFrame components never load. I cannot get past this part... then, in the DataEntryFrame, CountDownLatch should only decrements after the submit button is clicked, successfully adds a record to a database table, and disposes itself. Or when the user clicks cancel... Code: From MainFrame CountDownLatch dataEntryDone = new CountDownLatch(1); DataEntryFrame f = new DataEntryFrame(dataEntryDone); Thread newThread = new Thread(f); newThread.start(); dataEntryDone.await(); Code: From DataEntryFrame public void run(){ initComponents(); loadOtherData(); this.setVisible(true); } void submit(){ addRecord(); this.dispose() dataEntryDone.countDown(); }

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  • What is the relation between ContentPane and JPanel?

    - by Roman
    I found one example in which buttons are added to panels (instances of JPanel) then panels are added to the the containers (instances generated by getContentPane) and then containers are, by the construction, included into the JFrame (the windows). I tried two things: I got rid of the containers. In more details, I added buttons to a panel (instance of JPanel) and then I added the panel to the windows (instance of JFrame). It worked fine. I got rid of the panels. In more details, I added buttons directly to the container and then I added the container to the window (instance of JFrame). So, I do not understand two things. Why do we have two competing mechanism to do the same things. What is the reason to use containers in combination with the panels (JPanel)? (For example, what for we include buttons in JPanels and then we include JPanels in the Containers). Can we include JPanel in JPanel? Can we include a container in container?

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  • How to allow resizing of QMessageBox in PyQt4

    - by Simeon Fitch
    I'm using the nice feature in QMessageBox to optionally show detailed text to the user. However, the window after expansion is still fairly small, and one immediately tries to resize the window so more of the details are visible. Even after setting what I think are the proper settings it won't allow resizing. Here's the relevant snippet of PyQt4 code: mb = QMessageBox() mb.setText("Results written to '%s'" % filename) mb.setDetailedText(str(myData)) mb.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding) mb.setSizeGripEnabled(True) Am I missing a step and/or is this at all possible?

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  • Automatic logout in python web app

    - by Ali
    I have a web application in python wherein the user submits their email and password. These values are compared to values stored in a mysql database. If successful, the script generates a session id, stores it next to the email in the database and sets a cookie with the session id, with allows the user to interact with other parts of the sight. When the user clicks logout, the script erases the session id from the database and deletes the cookie. The cookie expires after 5 hours. My concern is that if the user doesnt log out, and the cookie expires, the script will force him to login, but if he has copied the session id from before, it can still be validated. How do i automatically delete the session id from the mysql database after 5 hours?

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  • IPhone Objectvie C

    - by Sea
    I am trying to determine if a UILabel was touched and if so do something. Give .. . . . UILabel * site = [[UILabel alloc] initWithFrame:CGRectMake(0, 185, 320, 30)]; site.text = [retriever.plistDict valueForKey:@"url"]; site.textAlignment =UITextAlignmentCenter; site.backgroundColor = [UIColor clearColor]; site.textColor = [UIColor whiteColor]; site.userInteractionEnabled = YES; [theBgView addSubview:site]; [site release]; . . . Then I write the callback. - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ retriever = [PListRetriever sharedInstance]; CGPoint pt = [[touches anyObject] locationInView: self]; NSURL *target = [[NSURL alloc] initWithString:[retriever.plistDict valueForKey:@"url"]]; [[UIApplication sharedApplication] openURL:target]; } The problem is right now, no matter where I touch in the View the Url is being opened. How do I determine if only just my label was touched?

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  • Best way to implement refusing a value change by the user in Swing?

    - by Michael Borgwardt
    I have a JCheckBox that should not be checked by the user when a certain other field is empty. So now I want to have an error popup and then reset the checkbox (I've considered disabling the checkbox, but the connection to the other field is non-obvious, and a tooltip text IMO not visible enough). What's the correct way to do that in Swing? Through a PropertyVetoException? Where do I throw it and where do I catch it? My first (probably ugly) idea would be to add a ChangeListener that itself shows the popup and resets the value.

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  • How to use a CTabCtrl in a MFC dialog based application ?

    - by shan23
    I need to do something which i expected to be was simple - create a tab control which has 2 tabs, implying 2 modes of operation for my app. When user clicks on Tab1, he'll be presented with some buttons and textboxes, and when he clicks Tab2, some other input method. I noticed that there was a CTabCtrl class thats used in MFC to add tabs. However, once I added the tab ctrl using the UI designer, I couldn't specify how many tabs there'll be using property window. Searching on the net, I found some examples but all of them required you to derive from CtabCtrl , create 2 or more child dialogs etc and to write your own custom class. My question is, since I want to do something so basic, why couldn't I do it using the familiar Add Event handler/Add member variable wizard and then handle everything else inside my app's class ? Surely, the default CTabCtrl class can do something useful without needing to derive from it ?

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  • Template and Themes in WPF through Custom Xaml Files

    - by AKRamkumar
    I have an application where I give my user Widgets. Suppose my user wants to customize the layout of the widgets. For example, I have a clock that is green. In Xaml, to add an animation around the clock would be easy. How could i make it such that at runtime, my application reads a layout.xaml file. Loads it and parses all the gradients and xaml. But still be able to use my widget in there. EG <Layout> <Grid> <!-- Grid Definitions or Animations or Whatever--> <Clock/> <!-- They need to be able to simply use this and my applications needs to read this--> </Grid> </Layout>

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  • Rails problem find by sql

    - by Totty
    I have this query and I have an error: images = Image.find_by_sql('PREPARE stmt FROM \' SELECT * FROM images AS i WHERE i.on_id = 1 AND i.on_type = "profile" ORDER BY i.updated_at LIMIT ?, 6\ '; SET @lower_limit := ((5 DIV 6) * 6); EXECUTE stmt USING @lower_limit;') Mysql::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SET @lower_limit := ((5 DIV 6) * 6); EXECUTE stmt USING @lower_limit' at line 1: PREPARE stmt FROM ' SELECT * FROM images AS i WHERE i.on_id = 1 AND i.on_type = "profile" ORDER BY i.updated_at LIMIT ?, 6'; SET @lower_limit := ((5 DIV 6) * 6); EXECUTE stmt USING @lower_limit;

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  • UI Design Choices and How to Implement Them

    - by AKRamkumar
    I am making an application that is a dashboard/widget host. I am using MEF to load the plugins and I have a ui Concept Idea like this: http://i42.tinypic.com/scb6nd.png Is this a good design choice? How would I implement the Navigation? Is there any Design Patter you would reccomend for this? Note: My contract interface is this. public interface IDashboardPlugin { public string Name{get;} public string Description{get;} public string Author{get;} public UIElement UI{get;} }

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  • Silverlight 4 desktop application sometimes zooms when touching it... and cannot zoom out

    - by TimothyP
    Hi, I have a Silverlight 4 desktop application which I control using a touchscreen (on an HP Touchsmart). Most of the time it works fine but sometimes when clicking something everything just zooms in and every time it happens things get bigger and bigger. The only way to get the normal size again is by restarting the application. Has anybody got any idea what might be causing it ? Does not seem to happen in browser mode. Is there a way to prevent zooming? Thnx

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