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Comments:
<0> If it's Java, and not Javascript!
<0> joseph: it's possible, yeah :)(
<1> I got a cl*** which extends JFrame, and I try to call the method .removeAll() from another cl***. It seems to work because after I call it, I can click any of the buttons, they seem frozen.. But they are still there! it seems that I needto "repaint" the JFrame somehow, but I don't know which method does that(if thats the case)
<1> I don't use threads.. except if threads are created from the swing compoments or something?
<0> Of course
<0> Swing uses a single thread to do all it's message handling, painting etc
<1> I see..
<0> If you go off and do stuff, and never finish doing stuff (give it back toswing), events won't pump, and everything will freese
<2> repaint() repaints and validate() reorganizes child components
<1> I see... I think you hit the spot there.. although I'm not exacly sure how to fix it.. maybe if I could give you a little bit more information you could be more specific as well..
<0> LLaffer: when you write swing apps, they should be event-drive. responding to swing events etc with very short/quick methods
<0> Any serious processing etc needs to be done in a different thread
<1> MainMenu is a cl*** which extends JFrame, and in the constructor it creates an instance of another cl*** called SecreteryPanel which extends JPanel.. then it adds this panel on the frame's panel. Now Secretery Panel has some buttons, which if clicked, the ActionListener calls a public method from the MainMenu instance(p***ed as a paremeter to the Secretery Panel) which method calls .removeAll();
<0> That's fine
<1> so how come the MainMenu swing gets busy then?
<0> There's just one swing thread. Where is your program at the time it's hanging?
<1> I click on the Secretery Panel's button which calls a public method from the MainMenu instance. I have a system.out in that method which prints out fine. the next instruction inside that method is this.getContentPane().removeAll(); .. it seems to be doing the job, but the buttons are still there, all frozen.. they don't get removed
<1> However, if I call the same method from the MainMenu's constructor in the beginning, all compoments are getting removed just fine
<2> I had the same problem, when I was trying to remove myself - a JButton from panel as a reaction to click on me
<0> what does the method in Secretary do *next*?
<0> You connected an event-handler to the Secretary button, right, and it called your method? WHen it does this you're *IN* the swing thread
<0> You need to handle things as quickly as possible, and then return
<0> Don't try and wait for anything, or do anything that takes, hmmm, more than 1/10 second
<1> Isee... it does nothing else
<1> it's something like this: public void actionPerfoemred(ActionEvent e) { if (e.GetActionCommand().equals("clearAll")) {parentMainMenu.clearAllMethod(); } }
<0> That should be fine. What does clearAllMethod() do?
<1> public void clearAllMethod() { System.out.println("This prints just fine"); this.getContentPane().removeAll(); }
<1> the eventhandler is in the secretery Panel cl***, the clearAllMethod is in the MainMenu cl***
<0> That all sounds okay. Maybe you just need repaint() or validate()
<1> ok will do
<0> I haven't done swing in >2 years
<1> thanks anyway
<1> Cool! repaint did the trick! thanks LLyric and Pukeye
<1> now for a question of finesse.. is this a proper way of doing things in java? P***ing the MainMenu instance as a parameter in the Secretery Panel and calling a clearAll method like that? is there a more effecient way to do something like this? this is my first experience in java, ever. I have no idea how everything should work
<0> Why does the secretary panel need to fiddle with the main menu?
<0> That basically makes it un-reusable, and highly coupled
<1> that's what I didn't like myself... is there a way to alter a panel in the JFrame that Secretery Panel is in, other than itself? Say MainMenu's JFrame has a blank panel.. And Secretery Panel has 5 buttons and I want something different to display in that blank panel for every button
<2> LLaffer: I just can tell, that there is no problem with efficiency (it's just part of your question) - instance of MainMenu is p***ed by reference (fast like pointer if you know C lang)
<0> LLaffer: sounds like a tabbed panel?
<0> Sounds like you want a frame for each set of controls
<2> LLaffer: maybe you should check out inner cl***es (but maybe I'm wrong) - you can define your Secretery panel cl*** *inside* the definition of JFrame cl***, and then you have the instance of JFrame from Secr. panel like this: MyFrame.this
<1> maybe this helps: www.intenseillusions.com/mainmenu.jpg
<1> I'm not too much worried about effeciency in that sense.. more like, if it's a 'programming' correct method or will it give me problems later on..
<1> I only want one frame, and when a button from a menu is clicked, a new panel should be created in the center of that frame(the blank panel spot)
<0> Even if you don't want to use a tabbed panel, that's what you need to build
<0> Don't muck around with hiding individual components
<0> http://java.sun.com/docs/books/tutorial/uiswing/components/tabbedpane.html
<1> I can't use a tabbed panel.. it won't look like a program, it will look like a "settings"window..
<0> You can change how it looks however you want. But, my point was, you should use that design
<0> not necessarily that actual component
<1> so there's a way to use a tabbed component without the actual "tabs" graphics on top of each panel?and create new panels or draw anything I want for each tab? can I also useany layout I need inside every tab?
<0> Tabbed Pannel just contains other panels
<0> The parent container doesn't know anything about what's in the panels, as such, it just treats them as panels
<1> ok I think I can take it from here
<1> thank you very much, you've been really helpfull
<0> np
<0> have fun :)
<1> ciao
<3> is there a way in java to repeat a character several times like in perl e.g perl -e 'print "a"x20;' prints out a 20 times?
<4> nnp: not that i know.
<3> oh well
<5> nasib...
<6> hey
<6> i'm creating a package with servlets, and i want to store CSS files inside this package too. please, how can i retrieve the css file (content) from inside the package?
<6> may be <link rel="stylesheet" href="/MyResources?com.test.resources.mystyle.css">, but how? can somebody help me, please?
<3> are you using tomcat or something?
<1> Hi! New question:)...
<1> is there any swing Help compoment that I could use which simulates a mechanism similar to Microsoft's .HLP editor in the Index tab, where you get to type a word, and as you type it,the results from the list below get filtered out?
<1> or do I have to make one from scratch?
<1> anyone attempted something like this before to point me the right way before I start?
<7> Hiya guys
<4> hi thunder
<4> LLaffer: possibly related: http://www.google.com/search?hl=en&q=javahelp&btnG=Google+Search
<6> nnp, sorry. i'm using apache tomcat 5.5.12
<8> guys my two cl***es interfaces appear on top of each other what code do i use to hide the cl*** contents from appearing on top my other cl***
<7> Javvaaaa: Huh?
<8> i really dont know how to explain this
<4> than no one can help you
<7> Javvaaaa: is this in the editor?
<8> but when i click on this button it goes to a new screen - the previous cl***es contents appears on the new screen, i want to hide that content
<4> then rather
<8> its looks all messy with all that content there
<7> Javvaaaa: Focus.. IS IT THE EDITOR??
<8> editor no its the GUI? sorry is that what you mean
<7> Javvaaaa: I don't understand what you mean by "on top of my other cl***" then. Is it some buttons or text fields that goes the wrong places or what do you mean?
<4> Javvaaaa: consider learning java with the sun java tutorial. it is very well structured.
<8> is it possible if someone can help me if i send the code ive spent a far while looking into it im sure its a one liner
<8> or if someone tells me how to hide a cl***es visability on screen
<9> helo everybody
<9> someone speak spanish .?
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