The code is as follows:
Implementation 1:
Basiceditor.java
Copy Code code as follows:
Package Swt_jface.demo5;
Import Java.io.BufferedReader;
Import Java.io.File;
Import Java.io.FileReader;
Import Java.io.FileWriter;
Import java.io.IOException;
Import Org.eclipse.jface.resource.ImageDescriptor;
Import Org.eclipse.jface.resource.ImageRegistry;
Import Org.eclipse.swt.SWT;
Import Org.eclipse.swt.custom.StyledText;
Import org.eclipse.swt.events.ModifyEvent;
Import Org.eclipse.swt.events.ModifyListener;
Import Org.eclipse.swt.graphics.Font;
Import Org.eclipse.swt.graphics.Image;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Display;
Import org.eclipse.swt.widgets.Event;
Import Org.eclipse.swt.widgets.FileDialog;
Import Org.eclipse.swt.widgets.Listener;
Import Org.eclipse.swt.widgets.Menu;
Import Org.eclipse.swt.widgets.MenuItem;
Import Org.eclipse.swt.widgets.MessageBox;
Import Org.eclipse.swt.widgets.Shell;
Import Org.eclipse.swt.widgets.ToolBar;
Import Org.eclipse.swt.widgets.ToolItem;
public class Basiceditor {
Display display = new display ();
Shell shell = new shell (display);
Styledtext text;
Boolean hasunsavedchanges;
File file;
Private String lastopendirectory;
public static final String app_name = "Basiceditor v1.0";
MenuItem miwrap = null;
Public Basiceditor () {
Shell.setlayout (New GridLayout ());
ToolBar ToolBar = new ToolBar (Shell, SWT. FLAT | Swt. right);
Toolitem tinew = new Toolitem (ToolBar, SWT. PUSH);
Tinew.settext ("&new");
Tinew.setimage (GetImage ("new.gif"));
Tinew.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
if (Handlechangesbeforediscard ()) {
FILE = null;
Text.settext ("");
}
}
});
Toolitem Tiopen = new Toolitem (ToolBar, SWT. PUSH);
Tiopen.settext ("&open");
Tiopen.setimage (GetImage ("open.gif"));
Tiopen.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
if (Handlechangesbeforediscard ())
Loadtextfromfile ();
}
});
Toolitem tisave = new Toolitem (ToolBar, SWT. PUSH);
Tisave.settext ("&save");
Tisave.setimage (GetImage ("save.gif"));
Tisave.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Savetexttofile ();
}
});
New Toolitem (ToolBar, SWT. SEPARATOR);
Toolitem ticopy = new Toolitem (ToolBar, SWT. PUSH);
Ticopy.settext ("&copy");
Ticopy.setimage (GetImage ("copy.gif"));
Ticopy.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.copy ();
}
});
Toolitem ticut = new Toolitem (ToolBar, SWT. PUSH);
Ticut.settext ("cu&t");
Ticut.setimage (GetImage ("cut.gif"));
Ticut.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.cut ();
}
});
Toolitem tipaste = new Toolitem (ToolBar, SWT. PUSH);
Tipaste.settext ("&paste");
Tipaste.setimage (GetImage ("paste.gif"));
Tipaste.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.paste ();
}
});
New Toolitem (ToolBar, SWT. SEPARATOR);
Final Toolitem tiwrap = new Toolitem (ToolBar, SWT. CHECK);
Tiwrap.settext ("&wrap");
Tiwrap.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.setwordwrap (Tiwrap.getselection ());
Miwrap.setselection (Tiwrap.getselection ());
}
});
Toolbar.pack ();
System.out.println ("Client area:" + Shell.getclientarea ());
Text =
New Styledtext (
Shell
Swt. MULTI
| Swt. WRAP
| Swt. BORDER
| Swt. H_scroll
| Swt. V_scroll);
Text.setlayoutdata (New Griddata (Griddata.fill_both));
Font font = new Font (Shell.getdisplay (), "Courier new", SWT. NORMAL);
Text.setfont (font);
Text.settext ("Basiceditor version 1.0\r\nwriten by Jack Li Guojie.");
Text.addmodifylistener (New Modifylistener () {
public void Modifytext (Modifyevent e) {
Hasunsavedchanges = true;
}
});
Menu MenuBar = new Menu (Shell, SWT. BAR);
MenuItem Filemenuitem = new MenuItem (MenuBar, SWT. CASCADE);
Filemenuitem.settext ("&file");
Menu Filemenu = new Menu (Shell, SWT. Drop_down);
MenuItem minew = new MenuItem (Filemenu, SWT. PUSH);
Minew.settext ("&new\tctrl+n");
Minew.setimage (GetImage ("new.gif"));
Minew.setaccelerator (SWT. CTRL + ' N ');
Minew.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
if (Handlechangesbeforediscard ()) {
FILE = null;
Text.settext ("");
}
}
});
MenuItem Miopen = new MenuItem (Filemenu, SWT. PUSH);
Miopen.settext ("&open\tctrl+o");
Miopen.setaccelerator (SWT. CTRL + ' O ');
Miopen.setimage (GetImage ("open.gif"));
Miopen.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
if (Handlechangesbeforediscard ())
Loadtextfromfile ();
}
});
MenuItem misave = new MenuItem (Filemenu, SWT. PUSH);
Misave.settext ("&save\tctrl+s");
Misave.setimage (GetImage ("save.gif"));
Misave.setaccelerator (SWT. CTRL + ' S ');
Misave.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Savetexttofile ();
}
});
New MenuItem (Filemenu, SWT. SEPARATOR);
MenuItem miexit = new MenuItem (Filemenu, SWT. PUSH);
Miexit.settext ("&exit");
Miexit.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
if (Handlechangesbeforediscard ())
Shell.dispose ();
}
});
Filemenuitem.setmenu (Filemenu);
MenuItem Editmenuitem = new MenuItem (MenuBar, SWT. CASCADE);
Editmenuitem.settext ("&edit");
Menu Editmenu = new Menu (Shell, SWT. Drop_down);
MenuItem micopy = new MenuItem (Editmenu, SWT. PUSH);
Micopy.settext ("&copy\tctrl+c");
Micopy.setimage (GetImage ("copy.gif"));
Micopy.setaccelerator (SWT. CTRL + ' C ');
Micopy.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.copy ();
}
});
MenuItem micut = new MenuItem (Editmenu, SWT. PUSH);
Micut.settext ("cu&t\tctrl+x");
Micut.setimage (GetImage ("cut.gif"));
Micut.setaccelerator (SWT. CTRL + ' X ');
Micut.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.cut ();
}
});
MenuItem mipaste = new MenuItem (Editmenu, SWT. PUSH);
Mipaste.settext ("&paste\tctrl+p");
Mipaste.setimage (GetImage ("paste.gif"));
Mipaste.setaccelerator (SWT. CTRL + ' P ');
Mipaste.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.paste ();
}
});
Editmenuitem.setmenu (Editmenu);
MenuItem Formatmenuitem = new MenuItem (MenuBar, SWT. CASCADE);
Formatmenuitem.settext ("&format");
Menu Formatmenu = new Menu (Shell, SWT. Drop_down);
Miwrap = new MenuItem (Formatmenu, SWT. CHECK);
Miwrap.settext ("&wrap\tctrl+w");
Miwrap.setaccelerator (SWT. CTRL + ' W ');
Miwrap.addlistener (SWT. Selection, New Listener () {
public void Handleevent (event event) {
Text.setwordwrap (Miwrap.getselection ());
Tiwrap.setselection (Miwrap.getselection ());
}
});
Formatmenuitem.setmenu (Formatmenu);
Shell.setmenubar (MenuBar);
Shell.setsize (400, 200);
Shell.open ();
while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}
Imageregistry imageregistry = new Imageregistry ();
Private Image GetImage (String shortfilename) {
if (Imageregistry.getdescriptor (shortfilename) = = null) {
Imagedescriptor descriptor = Imagedescriptor.createfromfile (null, "c:/icons/" + shortfilename);
Imageregistry.put (ShortFileName, descriptor);
}
Return Imageregistry.get (ShortFileName);
}
Boolean Handlechangesbeforediscard () {
if (! hasunsavedchanges)
return true;
MessageBox MessageBox = new MessageBox (Shell, SWT. icon_warning | Swt. YES | swt.no | Swt. CANCEL);
Messagebox.setmessage ("Do your want to save the changes to" + (file = = null?) A file? ": File.getname ());
Messagebox.settext (app_name);
int ret = Messagebox.open ();
if (ret = SWT.) YES) {
return Savetexttofile ();
}else if (ret = swt.no) {
return true;
}else{
return false;
}
}
Boolean loadtextfromfile () {
FileDialog dialog = new FileDialog (Shell, SWT. OPEN);
if (lastopendirectory!= null)
Dialog.setfilterpath (lastopendirectory);
String selectedfile = Dialog.open ();
if (selectedfile = = null) {
Log ("Action cancelled:loading the text from a file");
return false;
}
File = new file (selectedfile);
Lastopendirectory = File.getparent ();
try {
BufferedReader reader = new BufferedReader (new FileReader (file));
StringBuffer sb = new StringBuffer ();
String line = null;
while (line = Reader.readline ())!= null) {
Sb.append (line);
Sb.append ("\ r \ n");
}
Text.settext (Sb.tostring ());
return true;
}catch (IOException e) {
Log ("Failed to Load", "The text from File:" + file);
Log (e.tostring ());
}
return false;
}
Boolean savetexttofile () {
if (file = = null) {
FileDialog dialog = new FileDialog (Shell, SWT. SAVE);
if (lastopendirectory!= null)
Dialog.setfilterpath (lastopendirectory);
String selectedfile = Dialog.open ();
if (selectedfile = = null) {
Log ("Action cancelled:saving the text to a file");
return false;
}
File = new file (selectedfile);
Lastopendirectory = File.getparent ();
}
try {
FileWriter writer = new FileWriter (file);
Writer.write (Text.gettext ());
Writer.close ();
Log ("The text has been saved to file:" + file);
Hasunsavedchanges = false;
return true;
catch (IOException e) {
Log ("Failed to Save": "+ file");
Log (e.tostring ());
}
return false;
}
void log (String message) {
SYSTEM.OUT.PRINTLN (message);
}
public static void Main (string[] args) {
New Basiceditor ();
}
}
Implementation 2:
Basiceditor2.java
Copy Code code as follows:
Package Swt_jface.demo5;
Import Java.io.BufferedReader;
Import Java.io.File;
Import Java.io.FileReader;
Import Java.io.FileWriter;
Import java.io.IOException;
Import org.eclipse.jface.action.Action;
Import org.eclipse.jface.action.IAction;
Import Org.eclipse.jface.action.MenuManager;
Import Org.eclipse.jface.action.Separator;
Import Org.eclipse.jface.action.ToolBarManager;
Import Org.eclipse.jface.resource.ImageDescriptor;
Import Org.eclipse.jface.resource.ImageRegistry;
Import Org.eclipse.swt.SWT;
Import Org.eclipse.swt.custom.StyledText;
Import org.eclipse.swt.events.ModifyEvent;
Import Org.eclipse.swt.events.ModifyListener;
Import Org.eclipse.swt.graphics.Font;
Import Org.eclipse.swt.graphics.Image;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import org.eclipse.swt.widgets.Decorations;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.FileDialog;
Import Org.eclipse.swt.widgets.MenuItem;
Import Org.eclipse.swt.widgets.MessageBox;
Import Org.eclipse.swt.widgets.Shell;
Import Org.eclipse.swt.widgets.ToolBar;
public class BasicEditor2 {
Display display = new display ();
Shell shell = new shell (display);
Styledtext text;
Boolean hasunsavedchanges;
File file;
Private String lastopendirectory;
public static final String app_name = "Basiceditor v2.0";
MenuItem miwrap = null;
Public BasicEditor2 () {
Action actionnew =
New Action (
"&new",
Imagedescriptor.createfromfile (NULL, "C:/icons/new.gif")) {
public void Run () {
if (Handlechangesbeforediscard ()) {
FILE = null;
Text.settext ("");
}
}
};
Actionnew.setaccelerator (SWT. CTRL + ' N ');
Action Actionopen =
New Action (
"&open",
Imagedescriptor.createfromfile (NULL, "C:/icons/open.gif")) {
public void Run () {
if (Handlechangesbeforediscard ())
Loadtextfromfile ();
}
};
Actionopen.setaccelerator (SWT. CTRL + ' O ');
Action Actionsave =
New Action (
"&save\tctrl+s",
Imagedescriptor.createfromfile (NULL, "C:/icons/save.gif")) {
public void Run () {
Savetexttofile ();
}
};
Actionsave.setaccelerator (SWT. CTRL + ' S ');
Action actioncopy =
New Action (
"&copy",
Imagedescriptor.createfromfile (NULL, "C:/icons/copy.gif")) {
public void Run () {
Text.copy ();
}
};
Actioncopy.setaccelerator (SWT. CTRL + ' C ');
Action Actioncut =
New Action (
"Cu&t",
Imagedescriptor.createfromfile (NULL, "C:/icons/cut.gif")) {
public void Run () {
Text.cut ();
}
};
Actioncut.setaccelerator (SWT. CTRL + ' X ');
Action Actionpaste =
New Action (
"&paste",
Imagedescriptor.createfromfile (NULL, "C:/icons/paste.gif")) {
public void Run () {
Text.paste ();
}
};
Actionpaste.setaccelerator (SWT. CTRL + ' P ');
Action Actionwrap =
New Action (
"&wrap", Iaction.as_check_box) {
public void Run () {
Text.setwordwrap (ischecked ());
}
};
Actionwrap.setaccelerator (SWT. CTRL + ' W ');
Action Actionexit = new Action ("&exit@ctrl+x") {
public void Run () {
if (Handlechangesbeforediscard ())
Shell.dispose ();
}
};
System.out.println (Actionwrap.gettext ());
ToolBar ToolBar = new ToolBar (Shell, SWT. FLAT | Swt. right);
Toolbarmanager Toolbarmanager = new Toolbarmanager (ToolBar);
Toolbarmanager.add (actionnew);
Toolbarmanager.add (Actionopen);
Toolbarmanager.add (Actionsave);
Toolbarmanager.add (New Separator ());
Toolbarmanager.add (actioncopy);
Toolbarmanager.add (Actioncut);
Toolbarmanager.add (Actionpaste);
Toolbarmanager.add (New Separator ());
Toolbarmanager.add (Actionwrap);
Toolbarmanager.update (TRUE);
Shell.setlayout (New GridLayout ());
System.out.println ("Client area:" + Shell.getclientarea ());
Text =
New Styledtext (
Shell
Swt. MULTI
| Swt. WRAP
| Swt. BORDER
| Swt. H_scroll
| Swt. V_scroll);
Text.setlayoutdata (New Griddata (Griddata.fill_both));
Font font = new Font (Shell.getdisplay (), "Courier new", SWT. NORMAL);
Text.setfont (font);
Text.settext ("Basiceditor version 1.0\r\nwriten by Jack Li Guojie.");
Text.addmodifylistener (New Modifylistener () {
public void Modifytext (Modifyevent e) {
Hasunsavedchanges = true;
}
});
Menumanager Barmenumanager = new Menumanager ();
Menumanager Filemenumanager = new Menumanager ("&file");
Menumanager Editmenumanager = new Menumanager ("&edit");
Menumanager Formatmenumanager = new Menumanager ("&format");
Barmenumanager.add (Filemenumanager);
Barmenumanager.add (Editmenumanager);
Barmenumanager.add (Formatmenumanager);
Filemenumanager.add (actionnew);
Filemenumanager.add (Actionopen);
Filemenumanager.add (Actionsave);
Filemenumanager.add (New Separator ());
Filemenumanager.add (Actionexit);
Editmenumanager.add (actioncopy);
Editmenumanager.add (Actioncut);
Editmenumanager.add (Actionpaste);
Formatmenumanager.add (Actionwrap);
Shell.setmenubar (MenuBar);
Barmenumanager.updateall (TRUE);
Shell.setmenubar (Barmenumanager.createmenubar (decorations) shell);
Shell.setsize (400, 200);
Shell.open ();
while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}
Imageregistry imageregistry = new Imageregistry ();
Private Image GetImage (String shortfilename) {
if (Imageregistry.getdescriptor (shortfilename) = = null) {
Imagedescriptor descriptor =
Imagedescriptor.createfromfile (NULL, "c:/icons/" + shortfilename);
Imageregistry.put (ShortFileName, descriptor);
}
Return Imageregistry.get (ShortFileName);
}
Boolean Handlechangesbeforediscard () {
if (!hasunsavedchanges)
return true;
MessageBox MessageBox =
New MessageBox (
Shell
Swt. icon_warning | Swt. YES | swt.no | Swt. CANCEL);
Messagebox.setmessage (
"Do your want to save the changes"
+ (file = = null?) "A file?": File.getname ());
Messagebox.settext (app_name);
int ret = Messagebox.open ();
if (ret = SWT.) YES) {
return Savetexttofile ();
else if (ret = = swt.no) {
return true;
} else {
return false;
}
}
Boolean loadtextfromfile () {
FileDialog dialog = new FileDialog (Shell, SWT. OPEN);
if (lastopendirectory!= null)
Dialog.setfilterpath (lastopendirectory);
String selectedfile = Dialog.open ();
if (selectedfile = = null) {
Log ("Action cancelled:loading the text from a file");
return false;
}
File = new file (selectedfile);
Lastopendirectory = File.getparent ();
try {
BufferedReader reader = new BufferedReader (new FileReader (file));
StringBuffer sb = new StringBuffer ();
String line = null;
while (line = Reader.readline ())!= null) {
Sb.append (line);
Sb.append ("\ r \ n");
}
Text.settext (Sb.tostring ());
return true;
catch (IOException e) {
Log ("Failed to Load", "The text from File:" + file);
Log (e.tostring ());
}
return false;
}
Boolean savetexttofile () {
if (file = = null) {
FileDialog dialog = new FileDialog (Shell, SWT. SAVE);
if (lastopendirectory!= null)
Dialog.setfilterpath (lastopendirectory);
String selectedfile = Dialog.open ();
if (selectedfile = = null) {
Log ("Action cancelled:saving the text to a file");
return false;
}
File = new file (selectedfile);
Lastopendirectory = File.getparent ();
}
try {
FileWriter writer = new FileWriter (file);
Writer.write (Text.gettext ());
Writer.close ();
Log ("The text has been saved to file:" + file);
Hasunsavedchanges = false;
return true;
catch (IOException e) {
Log ("Failed to Save": "+ file");
Log (e.tostring ());
}
return false;
}
void log (String message) {
SYSTEM.OUT.PRINTLN (message);
}
public static void Main (string[] args) {
New BasicEditor2 ();
}
}
Implementation 3:
Basiceditor3.java
Copy Code code as follows:
Package swt_jface.demo11;
Import Java.io.BufferedReader;
Import Java.io.File;
Import Java.io.FileReader;
Import Java.io.FileWriter;
Import java.io.IOException;
Import org.eclipse.jface.action.Action;
Import org.eclipse.jface.action.IAction;
Import Org.eclipse.jface.action.MenuManager;
Import Org.eclipse.jface.action.Separator;
Import Org.eclipse.jface.action.ToolBarManager;
Import Org.eclipse.jface.resource.ImageDescriptor;
Import Org.eclipse.jface.resource.ImageRegistry;
Import Org.eclipse.swt.SWT;
Import Org.eclipse.swt.custom.StyledText;
Import org.eclipse.swt.custom.StyledTextPrintOptions;
Import org.eclipse.swt.events.ModifyEvent;
Import Org.eclipse.swt.events.ModifyListener;
Import Org.eclipse.swt.graphics.Font;
Import Org.eclipse.swt.graphics.GC;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.printing.PrintDialog;
Import Org.eclipse.swt.printing.Printer;
Import Org.eclipse.swt.printing.PrinterData;
Import org.eclipse.swt.widgets.Decorations;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.FileDialog;
Import Org.eclipse.swt.widgets.MenuItem;
Import Org.eclipse.swt.widgets.MessageBox;
Import Org.eclipse.swt.widgets.Shell;
Import Org.eclipse.swt.widgets.ToolBar;
public class BasicEditor3 {
Display display = new display ();
Shell shell = new shell (display);
Styledtext text;
Boolean hasunsavedchanges;
File file;
Private String lastopendirectory;
public static final String app_name = "Basiceditor v3.0";
MenuItem miwrap = null;
Public BasicEditor3 () {
Action actionnew =
New Action (
"&new",
Imagedescriptor.createfromfile (NULL, "C:/icons/new.gif")) {
public void Run () {
if (Handlechangesbeforediscard ()) {
FILE = null;
Text.settext ("");
}
}
};
Actionnew.setaccelerator (SWT. CTRL + ' N ');
Action Actionopen =
New Action (
"&open",
Imagedescriptor.createfromfile (NULL, "C:/icons/open.gif")) {
public void Run () {
if (Handlechangesbeforediscard ())
Loadtextfromfile ();
}
};
Actionopen.setaccelerator (SWT. CTRL + ' O ');
Action Actionsave =
New Action (
"&save\tctrl+s",
Imagedescriptor.createfromfile (NULL, "C:/icons/save.gif")) {
public void Run () {
Savetexttofile ();
}
};
Actionsave.setaccelerator (SWT. CTRL + ' S ');
Action actioncopy =
New Action (
"&copy",
Imagedescriptor.createfromfile (NULL, "C:/icons/copy.gif")) {
public void Run () {
Text.copy ();
}
};
Actioncopy.setaccelerator (SWT. CTRL + ' C ');
Action Actioncut =
New Action (
"Cu&t",
Imagedescriptor.createfromfile (NULL, "C:/icons/cut.gif")) {
public void Run () {
Text.cut ();
}
};
Actioncut.setaccelerator (SWT. CTRL + ' X ');
Action Actionpaste =
New Action (
"&paste",
Imagedescriptor.createfromfile (NULL, "C:/icons/paste.gif")) {
public void Run () {
Text.paste ();
}
};
Actionpaste.setaccelerator (SWT. CTRL + ' P ');
Action Actionwrap =
New Action (
"&wrap", Iaction.as_check_box) {
public void Run () {
Text.setwordwrap (ischecked ());
}
};
Actionwrap.setaccelerator (SWT. CTRL + ' W ');
Action Actionexit = new Action ("&exit@ctrl+x") {
public void Run () {
if (Handlechangesbeforediscard ())
Shell.dispose ();
}
};
Action Actionprint = new Action ("&print@ctrl+p") {
public void Run () {
Printtext (Text.gettext ());
}
};
Action ActionPrint2 = new Action ("Print (Styledtext)") {
public void Run () {
Styledtextprintoptions options = new Styledtextprintoptions ();
Options.header = "SWT";
Options.footer = "Page <page>";
Options.jobname = "Text";
Runnable Runnable = text.print (New Printer (), options);
Runnable.run ();
}
};
ToolBar ToolBar = new ToolBar (Shell, SWT. FLAT | Swt. right);
Toolbarmanager Toolbarmanager = new Toolbarmanager (ToolBar);
Toolbarmanager.add (actionnew);
Toolbarmanager.add (Actionopen);
Toolbarmanager.add (Actionsave);
Toolbarmanager.add (New Separator ());
Toolbarmanager.add (actioncopy);
Toolbarmanager.add (Actioncut);
Toolbarmanager.add (Actionpaste);
Toolbarmanager.add (New Separator ());
Toolbarmanager.add (Actionwrap);
Toolbarmanager.add (New Separator ());
Toolbarmanager.add (Actionprint);
Toolbarmanager.add (ActionPrint2);
Toolbarmanager.update (TRUE);
Shell.settext (app_name);
Shell.setlayout (New GridLayout ());
Text =
New Styledtext (
Shell
Swt. MULTI
| Swt. WRAP
| Swt. BORDER
| Swt. H_scroll
| Swt. V_scroll);
Text.setlayoutdata (New Griddata (Griddata.fill_both));
Font font = new Font (Shell.getdisplay (), "Courier new", SWT. NORMAL);
Text.setfont (font);
Text.settext ("Basiceditor version 3.0\r\nwriten by Jack Li Guojie.");
Text.addmodifylistener (New Modifylistener () {
public void Modifytext (Modifyevent e) {
Hasunsavedchanges = true;
}
});
Menumanager Barmenumanager = new Menumanager ();
Menumanager Filemenumanager = new Menumanager ("&file");
Menumanager Editmenumanager = new Menumanager ("&edit");
Menumanager Formatmenumanager = new Menumanager ("&format");
Barmenumanager.add (Filemenumanager);
Barmenumanager.add (Editmenumanager);
Barmenumanager.add (Formatmenumanager);
Filemenumanager.add (actionnew);
Filemenumanager.add (Actionopen);
Filemenumanager.add (Actionsave);
Filemenumanager.add (Actionprint);
Filemenumanager.add (New Separator ());
Filemenumanager.add (Actionexit);
Editmenumanager.add (actioncopy);
Editmenumanager.add (Actioncut);
Editmenumanager.add (Actionpaste);
Formatmenumanager.add (Actionwrap);
Shell.setmenubar (MenuBar);
Barmenumanager.updateall (TRUE);
Shell.setmenubar (Barmenumanager.createmenubar (decorations) shell);
Shell.setsize (400, 200);
Shell.open ();
while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}
int x;
int y;
int lineheight;
Printmargin margins;
int pagenumber = 1;
int linenumber = 1;
void Printtext (String text) {
PrintDialog dialog = new PrintDialog (shell);
Printerdata printerdata = Dialog.open ();
if (Printerdata = null) return;
Printer Printer = new Printer (printerdata);
if (! Printer.startjob ("text")) return;
GC GC = new GC (printer);
margins = Printmargin.getprintmargin (printer, 1.0);
x = Margins.left;
y = margins.top;
StringBuffer buffer = new StringBuffer ();
Font font = new Font (printer, Arial, SWT). NORMAL);
Gc.setfont (font);
Lineheight = Gc.getfontmetrics (). GetHeight ();
Printer.startpage ();
String page = "-" + pagenumber + "-";
Gc.drawstring (page, margins.right-margins.left-gc.textextent (page). x)/2 + margins.left, Margins.bottom + gc.textExt ENT (page). Y);
for (int index = 0; index <text.length ();) {
char C = Text.charat (index);
Switch (c) {
Case ' \ R ':
if (Index < Text.length ()-1 && text.charat (index + 1) = = ' \ n ') {
Printnewline (printer, GC, buffer.tostring ());
Buffer.setlength (0);
Index + 2;
}
Break
Case ' t ':
Case ':
if (Gc.textextent (buffer.tostring () + "). x > Margins.right-margins.left) {
Printnewline (printer, GC, buffer.tostring ());
Buffer.setlength (0);
}
Buffer.append (c);
if (Index < Text.length ()-1 && (! Character.iswhitespace (Text.charat (index + 1))) {//Looks up one word to the whether of the line should wraps.
String Word = Readword (text, index + 1);
if (Gc.textextent (buffer.tostring () + word). x > Margins.right-margins.left) {
Printnewline (printer, GC, buffer.tostring ());
Buffer.setlength (0);
}
}
Index + 1;
Break
Default
Buffer.append (c);
Index + 1;
}
}
if (buffer.length () > 0) printnewline (printer, GC, buffer.tostring ());
if (y + lineheight <= margins.bottom) printer.endpage ();
Printer.endjob ();
Gc.dispose ();
Font.dispose ();
Printer.dispose ();
}
void Printnewline (Printer Printer, GC GC, String Line) {
if (y + lineheight > Margins.bottom) {
Printer.endpage ();
x = Margins.left;
y = margins.top;
PageNumber + +;
linenumber = 1;
String page = "-" + pagenumber + "-";
Gc.drawstring (page, margins.right-margins.left-gc.textextent (page). x)/2 + margins.left, Margins.bottom + gc.textExt ENT (page). Y);
}
Gc.drawstring (line, x, y);
Y + + lineheight;
}
String Readword (string text, int offset) {
StringBuffer sb = new StringBuffer ();
int index = offset;
char c = 0;
while (Index < text.length ()) {
c = Text.charat (index);
if (Character.iswhitespace (c)) break;
Sb.append (c);
Index + 1;
}
return sb.tostring ();
}
Imageregistry imageregistry = new Imageregistry ();
Private Image GetImage (String shortfilename) {
if (Imageregistry.getdescriptor (shortfilename) = = null) {
Imagedescriptor descriptor =
Imagedescriptor.createfromfile (NULL, "c:/icons/" + shortfilename);
Imageregistry.put (ShortFileName, descriptor);
// }
Return Imageregistry.get (ShortFileName);
// }
Boolean Handlechangesbeforediscard () {
if (!hasunsavedchanges)
return true;
MessageBox MessageBox =
New MessageBox (
Shell
Swt. icon_warning | Swt. YES | swt.no | Swt. CANCEL);
Messagebox.setmessage (
"Do your want to save the changes"
+ (file = = null?) "A file?": File.getname ());
Messagebox.settext (app_name);
int ret = Messagebox.open ();
if (ret = SWT.) YES) {
return Savetexttofile ();
else if (ret = = swt.no) {
return true;
} else {
return false;
}
}
Boolean loadtextfromfile () {
FileDialog dialog = new FileDialog (Shell, SWT. OPEN);
if (lastopendirectory!= null)
Dialog.setfilterpath (lastopendirectory);
String selectedfile = Dialog.open ();
if (selectedfile = = null) {
Log ("Action cancelled:loading the text from a file");
return false;
}
File = new file (selectedfile);
Lastopendirectory = File.getparent ();
try {
BufferedReader reader = new BufferedReader (new FileReader (file));
StringBuffer sb = new StringBuffer ();
String line = null;
while (line = Reader.readline ())!= null) {
Sb.append (line);
Sb.append ("\ r \ n");
}
Text.settext (Sb.tostring ());
return true;
catch (IOException e) {
Log ("Failed to Load", "The text from File:" + file);
Log (e.tostring ());
}
return false;
}
Boolean savetexttofile () {
if (file = = null) {
FileDialog dialog = new FileDialog (Shell, SWT. SAVE);
if (lastopendirectory!= null)
Dialog.setfilterpath (lastopendirectory);
String selectedfile = Dialog.open ();
if (selectedfile = = null) {
Log ("Action cancelled:saving the text to a file");
return false;
}
File = new file (selectedfile);
Lastopendirectory = File.getparent ();
}
try {
FileWriter writer = new FileWriter (file);
Writer.write (Text.gettext ());
Writer.close ();
Log ("The text has been saved to file:" + file);
Hasunsavedchanges = false;
return true;
catch (IOException e) {
Log ("Failed to Save": "+ file");
Log (e.tostring ());
}
return false;
}
void log (String message) {
SYSTEM.OUT.PRINTLN (message);
}
public static void Main (string[] args) {
New BasicEditor3 ();
}
}
The printer can be appended with the following class:
Copy Code code as follows:
Package swt_jface.demo11;
Import Org.eclipse.swt.graphics.Point;
Import Org.eclipse.swt.graphics.Rectangle;
Import Org.eclipse.swt.printing.Printer;
public class Printmargin {
public int left;
public int right;
public int top;
public int bottom;
Private Printmargin (int left, right of int, int top, int bottom) {
This.left = left;
This.right = right;
This.top = top;
This.bottom = bottom;
}
Static Printmargin Getprintmargin (Printer Printer, double margin) {
return Getprintmargin (printer, margin, margin, margin, margin);
}
Static Printmargin Getprintmargin (
Printer Printer,
Double MarginLeft,
Double MarginRight,
Double MarginTop,
Double marginbottom) {
Rectangle Clientarea = Printer.getclientarea ();
Rectangle trim = Printer.computetrim (0, 0, 0, 0);
Point dpi = printer.getdpi ();
int leftMargin = (int) (MARGINLEFT * dpi.x)-trim.x;
int rightMargin =
Clientarea.width
+ Trim.width
-(int) (MarginRight * dpi.x)
-Trim.x;
int topMargin = (int) (MARGINTOP * dpi.y)-trim.y;
int bottommargin =
Clientarea.height
+ Trim.height
-(int) (MarginBottom * dpi.y)
-Trim.y;
return new Printmargin (
LeftMargin,
RightMargin,
TopMargin,
BottomMargin);
}
Public String toString () {
Return "Margin {"
+ Left
+ ", "
+ Right
+ "; "
+ Top
+ ", "
+ Bottom
+ " }";
}
}
