Web Browser.....Code is inside...but clarify few things!

It took me about a week to make it and i guess it's going to take more time to add a JProgressBar to it coz i m not finding any method that can detect the current progress of the page........

>ok. If it's that important you should go see your teacher. The scope of this question goes way beyond what we can provide here on these forums.

i think it's beyond her knowledge and in fact it's way beyond all the teachers whom i hav meet.

I think i need to learn more about how browsers operate and i also think that java does not provide enough classes or methods that can help anyone to make a browser......anywayz...

i tried to log in on yahoo and nothing happend coz of ssl

>JEditorPane is not built for nor can it serve as ......

Does anyother component supports this kinda actionor provide better methods to overcome problems........

>You're probably on your own on this one, but you could scan the web..

i tried to include only the neccessary classes to make the browser work fast ....r there any other things that can improve its efficiency

One more thing....... the main motivation behind this program was firefox i thought it was made in java.....and i m still not sure whether it is made in java......i thought if they can do it why can't i

anywayz u helped alot but i m still not sure on few points

The main being the little steps that go about when someone opens a page.....?how does the browser go about it..

unsafepilota at 2007-7-16 1:42:57 >

>Broken Browser excuse me/...

check this out > run it and tell me if the code is broken...

import javax.swing.JFrame;

import javax.swing.JTextField;

import javax.swing.JButton;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JEditorPane;

import javax.swing.JLabel;

import java.io.IOException;

import java.awt.GridBagLayout;

import java.awt.GridBagConstraints;

import java.awt.BorderLayout;

import java.awt.event.ActionListener;

import java.awt.event.ActionEvent;

import javax.swing.UIManager;

import javax.swing.JEditorPane;

import javax.swing.event.HyperlinkListener;

import javax.swing.event.HyperlinkEvent;

import javax.swing.JOptionPane;

public class Browser implements ActionListener

{

JTextField t1;

JLabel l1;

JButton b1;

GridBagLayout gbl;

GridBagConstraints gbc;

JPanel p;

JFrame frame;

JScrollPane scrollPane;

JEditorPane jep;

static String initialPage;

public Browser()

{

//JFrame.setDefaultLookAndFeelDecorated(true);

/*try

{

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

}

catch(Exception e)

{

e.printStackTrace();

}*/

frame=new JFrame("Simple Web Browser");

gbl=new GridBagLayout();

gbc=new GridBagConstraints();

p=new JPanel();

p.setLayout(gbl);

jep = new JEditorPane();

t1=new JTextField();

b1=new JButton("Check it out!");

b1.addActionListener(this);

frame.getRootPane().setDefaultButton(b1);

l1=new JLabel("Address");

gbc.anchor=GridBagConstraints.NORTHEAST;

gbc.fill=GridBagConstraints.HORIZONTAL;

gbc.gridx=0;

gbc.gridy=0;

gbc.weightx=0.0;

gbl.setConstraints(l1,gbc);

p.add(l1);

gbc.anchor=GridBagConstraints.NORTHEAST;

gbc.gridx=1;

gbc.gridy=0;

gbc.weightx=1.0;

gbl.setConstraints(t1,gbc);

p.add(t1);

gbc.anchor=GridBagConstraints.NORTHWEST;

gbc.gridx=2;

gbc.gridy=0;

gbc.weightx=0.0;

gbl.setConstraints(b1,gbc);

p.add(b1);

scrollPane = new JScrollPane(jep);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.getContentPane().add(p,BorderLayout.NORTH);

frame.getContentPane().add(scrollPane);

frame.setSize(1000,700);

frame.setVisible(true);

}

public void actionPerformed(ActionEvent e)

{

initialPage=t1.getText();

char a=initialPage.charAt(0);

char b=initialPage.charAt(1);

char c=initialPage.charAt(2);

char d=initialPage.charAt(3);

char ea=initialPage.charAt(4);

char f=initialPage.charAt(5);

char g=initialPage.charAt(6);

if((a=='h')&&(b=='t')&&(c=='t')&&(d=='p')&&(ea==':')&&(f=='/')&&(g=='/'))

{

initialPage=t1.getText();

}

else

{

initialPage="http://"+initialPage;

}

jep.setEditable(false);

jep.addHyperlinkListener(new second(jep));

try

{

jep.setPage(initialPage);

}

catch (IOException ae)

{

JOptionPane.showMessageDialog(frame,new String("Error: "+ae));

}

}

public static void main(String[] args)

{

new Browser();

}

}

class second implements HyperlinkListener

{

private JEditorPane pane;

public second(JEditorPane pane)

{

this.pane = pane;

}

public void hyperlinkUpdate(HyperlinkEvent evt)

{

if (evt.getEventType() == HyperlinkEvent.EventType.ACTIVATED)

{

try

{

pane.setPage(evt.getURL());

}

catch (Exception e){}

}}}

unsafepilota at 2007-7-16 1:42:57 >

I almost forgot. You don't need to know the status of the html being displayed to show a status bar. Simply create a text status bar to display a message and another status bar similar to the status bar when windows is loading. The status bar will simply loop until complete (this doesn't give the user information as to how long it will take but does let the user know something is happening).

DeltaCodera at 2007-7-16 1:42:57 >

> Hi,

> I think u can use another browser, instead of

> JEditorPane, now I amu sing Jdic browser which it's

> an IE control and had implemented some of events that

> can help u, so take a look at

> https://jdic.dev.java.net/

Not to sound "blasphemous", but what's the point in JDIC? The Browser class of org.jdesktop.jdic requires that you have an existing browser engine, which AFAIK only supports IE, to run a Browser.

So you need a browser to write a browser. Reinventing the wheel?

Phil

ppowell777a at 2007-7-16 1:42:57 >