SWT (JFace) experience of Styledtext class _java programming

Wraplines.java

Copy Code code as follows:

Package Swt_jface.demo4;
Import Org.eclipse.swt.SWT;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.Label;
Import Org.eclipse.swt.widgets.Shell;
Import Org.eclipse.swt.widgets.Text;
public class WrapLines {

Display display = new display ();
Shell shell = new shell (display);

Text Text1;
Text Text2;
String line = "abcdefghijklmnopqrstuvwxyz0123456789";

private void init () {

Text1 = new Text (Shell, SWT. BORDER | Swt. MULTI);
Text.settextlimit (12);
Text1.settext (line);
Text2 = new Text (Shell, SWT. BORDER | Swt. WRAP);
Text2.settext (line);
}
Public WrapLines () {

Shell.setlayout (New GridLayout (2, true));
(New Label (Shell, SWT.) NULL)). SetText ("SWT.") BORDER |\nswt.mutli ");
(New Label (Shell, SWT.) NULL)). SetText ("SWT.") BORDER |\nswt.wrap ");
Init ();
Griddata griddata = new Griddata (Griddata.fill_both);
Text1.setlayoutdata (Griddata);

Griddata = new Griddata (Griddata.fill_both);
Text2.setlayoutdata (Griddata);
Shell.pack ();
Shell.open ();

while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}
public static void Main (string[] args) {
New WrapLines ();
}
}

Remarkstext.java

Copy Code code as follows:

Package Swt_jface.demo4;
Import Org.eclipse.swt.SWT;
Import org.eclipse.swt.events.ModifyEvent;
Import Org.eclipse.swt.events.ModifyListener;
Import org.eclipse.swt.events.VerifyEvent;
Import Org.eclipse.swt.events.VerifyListener;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.Label;
Import Org.eclipse.swt.widgets.Shell;
Import Org.eclipse.swt.widgets.Text;
public class Remarkstext {

Display display = new display ();
Shell shell = new shell (display);

text text;
Public Remarkstext () {

Shell.setlayout (New GridLayout (1, false));
(New Label (Shell, SWT.) NULL)). SetText ("Remarks:");
Text = new text (Shell, SWT. MULTI | Swt. BORDER | Swt. V_scroll | Swt. H_scroll);
Text.settext ("123456789");
Text.setlayoutdata (New Griddata (Griddata.fill_both));
System.out.println ("GetText:" + text.gettext (1, 6));
char[] chars = Text.getlinedelimiter (). ToCharArray ();
for (int i = 0; i < chars.length; i++) {
System.out.println ("line delimiter #" + i + ":" + integer.tohexstring (chars[i));
}
Text.getorientation ();
System.out.println ("Number of chars:" + text.getcharcount ());
System.out.println ("Tabs:" + text.gettabs ());
Text.addverifylistener (New Verifylistener () {
public void Verifytext (Verifyevent e) {
if (e.end = = E.start) {
if (E.character = = ' && e.statemask & SWT. CTRL)!= 0) {
if (Text.gettext (E.end-1, e.end-1). Equals ("V")) {
E.text = "Erifylistener";
}else{
E.doit = false;
}
}
}
}
});
Text.addmodifylistener (New Modifylistener () {
public void Modifytext (Modifyevent e) {
System.out.println ("New character count:" + text.getcharcount ());
}
});
Text.append ("a");

Text.setselection (1, 4);
System.out.println ("getselection:\t" + text.getselection ());
System.out.println ("getselectioncount:\t" + Text.getselectioncount ());
System.out.println ("getselectiontext:\t" + text.getselectiontext ());
Text.insert ("ABC");
Shell.pack ();
Shell.setsize (300, 150);
Shell.open ();

while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}
public static void Main (string[] args) {
New Remarkstext ();
}
}

Again such as Password box:
Userpassword.java

Copy Code code as follows:

Package Swt_jface.demo4;
Import Org.eclipse.swt.SWT;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.Label;
Import Org.eclipse.swt.widgets.Shell;
Import Org.eclipse.swt.widgets.Text;
public class UserPassword {

Display display = new display ();
Shell shell = new shell (display);

Text Textuser;
Text Textpassword;
private void init () {

(New Label (Shell, SWT.) NULL)). SetText ("User name:");
Textuser = new Text (Shell, SWT. Single | Swt. BORDER);
Textuser.settext ("Default_user");
Textuser.settextlimit (16);
(New Label (Shell, SWT.) NULL)). SetText ("Password:");
Textpassword = new Text (Shell, SWT. Single | Swt. BORDER);
System.out.println (Textpassword.getechochar ());
Textpassword.setechochar (' * ');
}

Public UserPassword () {

Shell.setlayout (New GridLayout (2, false));
Init ();

Textuser.setlayoutdata (New Griddata (griddata.fill_horizontal));
Textpassword.setlayoutdata (New Griddata (griddata.fill_horizontal));

Shell.pack ();
Shell.open ();
while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}
public static void Main (string[] args) {
New UserPassword ();
}
}

Here are some examples of modifying text using the Styledtext class:

Highlightoddline.java

Copy Code code as follows:

Package Swt_jface.demo4;
Import Org.eclipse.swt.SWT;
Import org.eclipse.swt.custom.LineBackgroundEvent;
Import Org.eclipse.swt.custom.LineBackgroundListener;
Import Org.eclipse.swt.custom.StyledText;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.Shell;
public class Highlightoddline {

Display display = new display ();
Shell shell = new shell (display);

Styledtext Styledtext;

Public Highlightoddline () {

Shell.setlayout (New GridLayout ());
Styledtext = new Styledtext (Shell, SWT. MULTI | Swt. WRAP | Swt. BORDER | Swt. H_scroll | Swt. V_scroll);
Styledtext.setlayoutdata (New Griddata (Griddata.fill_both));
Styledtext.addlinebackgroundlistener (New Linebackgroundlistener () {
public void Linegetbackground (Linebackgroundevent event) {
if (Styledtext.getlineatoffset (event.lineoffset)% 2 = 1)
Event.linebackground = Shell.getdisplay (). Getsystemcolor (SWT. Color_yellow);
}
});

Styledtext.settext ("line 0\r\nline 1\r\nline 2\r\nline 3\r\nline 4\r\nline 6");
Shell.setsize (300, 150);
Shell.open ();
while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}
public static void Main (string[] args) {
New Highlightoddline ();
}
}

Setlinebackground.java

Copy Code code as follows:

Package Swt_jface.demo4;
Import Org.eclipse.swt.SWT;
Import Org.eclipse.swt.custom.StyleRange;
Import Org.eclipse.swt.custom.StyledText;
Import Org.eclipse.swt.graphics.Font;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.Shell;
public class Setlinebackground {

Display display = new display ();
Shell shell = new shell (display);

Styledtext Styledtext;
Public Setlinebackground () {
Shell.setlayout (New GridLayout ());
Styledtext = new Styledtext (Shell, SWT. BORDER | Swt. MULTI | Swt. WRAP | Swt. H_scroll | Swt. V_scroll);
Styledtext.setlayoutdata (New Griddata (Griddata.fill_both));
Font font = new Font (Shell.getdisplay (), "Courier new", SWT. NORMAL);
Styledtext.setfont (font);
Styledtext.settext ("ABCDEFG\R\NHIJKLMN");
Stylerange styleRange1 = new Stylerange ();
Stylerange1.start = 2;
Stylerange1.length = 3;
Stylerange1.foreground = Shell.getdisplay (). Getsystemcolor (SWT. Color_blue);
Stylerange1.background = Shell.getdisplay (). Getsystemcolor (SWT. Color_yellow);
Stylerange1.fontstyle = SWT. BOLD;

Styledtext.setstylerange (STYLERANGE1);
Styledtext.setlinebackground (0, 1, shell.getdisplay (). Getsystemcolor (SWT. Color_green));
Styledtext.setlinebackground (1, 1, Shell.getdisplay (). Getsystemcolor (SWT. Color_yellow));

Shell.setsize (300, 120);
Shell.open ();
while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}

public static void Main (string[] args) {
New Setlinebackground ();
}
}

Searchstyletext.java

Copy Code code as follows:

Package Swt_jface.demo4;
Import java.util.LinkedList;
Import Org.eclipse.swt.SWT;
Import org.eclipse.swt.custom.LineStyleEvent;
Import Org.eclipse.swt.custom.LineStyleListener;
Import Org.eclipse.swt.custom.StyleRange;
Import Org.eclipse.swt.custom.StyledText;
Import Org.eclipse.swt.events.SelectionAdapter;
Import org.eclipse.swt.events.SelectionEvent;
Import Org.eclipse.swt.graphics.Font;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Button;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.Shell;
Import Org.eclipse.swt.widgets.Text;
public class Searchstyletext {

Display display = new display ();
Shell shell = new shell (display);
Styledtext Styledtext;
Text Keywordtext;
Button button;

String keyword;

Public Searchstyletext () {

Shell.setlayout (New GridLayout (2, false));
Styledtext = new Styledtext (Shell, SWT. MULTI | Swt. WRAP | Swt. BORDER | Swt. H_scroll | Swt. V_scroll);
Griddata griddata = new Griddata (Griddata.fill_both);
Griddata.horizontalspan = 2;
Styledtext.setlayoutdata (Griddata);
Keywordtext = new Text (Shell, SWT. Single | Swt. BORDER);
Keywordtext.setlayoutdata (New Griddata (griddata.fill_horizontal));
Font font = new Font (Shell.getdisplay (), "Courier new", SWT. NORMAL);
Styledtext.setfont (font);
button = New button (Shell, SWT. PUSH);
Button.settext ("Search");
Button.addselectionlistener (New Selectionadapter () {
public void widgetselected (Selectionevent e) {
Keyword = Keywordtext.gettext ();
Styledtext.redraw ();
}
});

Styledtext.addlinestylelistener (New Linestylelistener () {
public void Linegetstyle (Linestyleevent event) {
if (keyword = null | | keyword.length () = 0) {
Event.styles = new Stylerange[0];
Return
}
String line = Event.linetext;
int cursor =-1;
LinkedList list = new LinkedList ();
while ((cursor = line.indexof (keyword, cursor+1)) >= 0) {
List.add (Gethighlightstyle (Event.lineoffset+cursor, Keyword.length ()));
}
Event.styles = (stylerange[]) List.toarray (new Stylerange[list.size ()));
}
});

Keyword = "SW";
Styledtext.settext ("AWT, SWING \R\NSWT & JFACE");

Shell.pack ();
Shell.open ();

while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}

Private Stylerange gethighlightstyle (int startoffset, int length) {

Stylerange Stylerange = new Stylerange ();
Stylerange.start = Startoffset;
stylerange.length = length;
Stylerange.background = Shell.getdisplay (). Getsystemcolor (SWT. Color_yellow);
return stylerange;
}
public static void Main (string[] args) {
New Searchstyletext ();
}
}

Samplestyledtext.java

Copy Code code as follows:

Package Swt_jface.demo4;
Import Org.eclipse.swt.SWT;
Import Org.eclipse.swt.custom.StyleRange;
Import Org.eclipse.swt.custom.StyledText;
Import Org.eclipse.swt.graphics.Font;
Import Org.eclipse.swt.layout.GridData;
Import Org.eclipse.swt.layout.GridLayout;
Import Org.eclipse.swt.widgets.Display;
Import Org.eclipse.swt.widgets.Shell;
public class Samplestyledtext {

Display display = new display ();
Shell shell = new shell (display);
Styledtext Styledtext;
Public Samplestyledtext () {

Shell.setlayout (New GridLayout ());
Styledtext = new Styledtext (Shell, SWT. MULTI | Swt. WRAP | Swt. BORDER | Swt. H_scroll | Swt. V_scroll);
Styledtext.setlayoutdata (New Griddata (Griddata.fill_both));
Font font = new Font (Shell.getdisplay (), "Courier new", SWT. NORMAL);
Styledtext.setfont (font);
Styledtext.settext ("123456789\r\nabcdefghi");

Stylerange styleRange1 = new Stylerange ();
Stylerange1.start = 2;
Stylerange1.length = 16;
Stylerange1.foreground = Shell.getdisplay (). Getsystemcolor (SWT. Color_blue);
Stylerange1.background = Shell.getdisplay (). Getsystemcolor (SWT. Color_yellow);
Stylerange1.fontstyle = SWT. BOLD;

Stylerange styleRange2 = new Stylerange ();
Stylerange2.start = 14;
Stylerange2.length = 3;
Stylerange2.fontstyle = SWT. NORMAL;
Stylerange2.foreground = Shell.getdisplay (). Getsystemcolor (SWT. Color_yellow);
Stylerange2.background = Shell.getdisplay (). Getsystemcolor (SWT. Color_blue);

Styledtext.setstylerange (STYLERANGE1);
Styledtext.setstylerange (StyleRange2);
Styledtext.setstyleranges (New Stylerange[]{stylerange1, styleRange2});
Styledtext.setstyleranges (New Stylerange[]{stylerange2, styleRange1});
Styledtext.setlinebackground (1, 1, Shell.getdisplay (). Getsystemcolor (SWT. Color_gray));
Styledtext.setselection (4);
System.out.println (Printstyleranges (Styledtext.getstyleranges ()));
Styledtext.insert ("000");

System.out.println (Printstyleranges (Styledtext.getstyleranges ()));
Styledtext.setstyleranges (New Stylerange[]{stylerange1});
System.out.println (Printstyleranges (Styledtext.getstyleranges ()));

Shell.pack ();
Shell.setsize (300, 120);
Shell.open ();

while (!shell.isdisposed ()) {
if (!display.readanddispatch ()) {
Display.sleep ();
}
}
Display.dispose ();
}

Private String printstyleranges (stylerange[] styleranges) {
if (styleranges = null)
return "NULL";
else if (styleranges.length = 0)
Return "[]";
StringBuffer sb = new StringBuffer ();
for (int i=0; i<styleranges.length; i++) {
Sb.append (styleranges[i] + "\ n");
}
return sb.tostring ();
}
public static void Main (string[] args) {
New Samplestyledtext ();
}
}