Java by API/org.eclipse.swt.widgets/Tree
Содержание
new Tree(Composite parent, int style)
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class MainClass {
public static void main(String[] a) {
final Display d = new Display();
final Shell s = new Shell(d);
s.setSize(250, 200);
s.setText("A Table Shell Example");
s.setLayout(new FillLayout());
Tree t = new Tree(s, SWT.SINGLE | SWT.BORDER);
TreeItem child1 = new TreeItem(t, SWT.NONE, 0);
child1.setText("1");
TreeItem child2 = new TreeItem(t, SWT.NONE, 1);
child2.setText("2");
TreeItem child2a = new TreeItem(child2, SWT.NONE, 0);
child2a.setText("2A");
TreeItem child2b = new TreeItem(child2, SWT.NONE, 1);
child2b.setText("2B");
TreeItem child3 = new TreeItem(t, SWT.NONE, 2);
child3.setText("3");
s.open();
while (!s.isDisposed()) {
if (!d.readAndDispatch())
d.sleep();
}
d.dispose();
}
}
</source>
Tree: addKeyListener(KeyListener lis)
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.custom.TreeEditor; import org.eclipse.swt.events.FocusAdapter; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class MainClass {
public static void main(String[] a) {
final Display d = new Display();
final Shell shell = new Shell(d);
shell.setSize(250, 200);
shell.setLayout(new FillLayout());
final Tree tree = new Tree(shell, SWT.SINGLE);
for (int i = 0; i < 3; i++) {
TreeItem iItem = new TreeItem(tree, SWT.NONE);
iItem.setText("Edit me by pressing F2 " + (i + 1));
iItem.setExpanded(true);
}
final TreeEditor editor = new TreeEditor(tree);
editor.horizontalAlignment = SWT.LEFT;
editor.grabHorizontal = true;
tree.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent event) {
if (event.keyCode == SWT.F2 && tree.getSelectionCount() == 1) {
final TreeItem item = tree.getSelection()[0];
final Text text = new Text(tree, SWT.NONE);
text.setText(item.getText());
text.setFocus();
text.addFocusListener(new FocusAdapter() {
public void focusLost(FocusEvent event) {
item.setText(text.getText());
text.dispose();
}
});
editor.setEditor(text, item);
}
}
});
shell.open();
while (!shell.isDisposed()) {
if (!d.readAndDispatch())
d.sleep();
}
d.dispose();
}
}
</source>
Tree: addSelectionListener(SelectionListener lis)
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.TreeEvent; import org.eclipse.swt.events.TreeListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.List; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class MainClass {
public static void main(String[] a) {
final Display d = new Display();
final Shell s = new Shell(d);
s.setSize(250, 200);
s.setText("A Tree Shell Example");
s.setLayout(new FillLayout(SWT.HORIZONTAL));
final Tree t = new Tree(s, SWT.SINGLE | SWT.BORDER);
final TreeItem child1 = new TreeItem(t, SWT.NONE, 0);
child1.setText("1");
// child1.setImage(new Image(d, "c:\\icons\\folder.gif"));
final TreeItem child2 = new TreeItem(t, SWT.NONE, 1);
child2.setText("2");
final TreeItem child2a = new TreeItem(child2, SWT.NONE, 0);
child2a.setText("2A");
final TreeItem child2b = new TreeItem(child2, SWT.NONE, 1);
child2b.setText("2B");
final TreeItem child3 = new TreeItem(t, SWT.NONE, 2);
child3.setText("3");
final List l = new List(s, SWT.BORDER | SWT.SINGLE);
t.addTreeListener(new TreeListener() {
public void treeExpanded(TreeEvent e) {
TreeItem ti = (TreeItem) e.item;
// ti.setImage(new Image(d, "c:\\icons\\open.gif"));
}
public void treeCollapsed(TreeEvent e) {
TreeItem ti = (TreeItem) e.item;
// ti.setImage(new Image(d, "c:\\icons\\folder.gif"));
}
});
t.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
TreeItem ti = (TreeItem) e.item;
populateList(ti.getText());
}
private void populateList(String type) {
if (type.equals("1")) {
l.removeAll();
l.add("1");
l.add("2");
}
if (type.equals("2")) {
l.removeAll();
}
if (type.equals("2A")) {
l.removeAll();
l.add("3");
l.add("4");
}
if (type.equals("2B")) {
l.removeAll();
l.add("5");
l.add("6");
}
if (type.equals("3")) {
l.removeAll();
l.add("7");
l.add("8");
}
}
});
s.open();
while (!s.isDisposed()) {
if (!d.readAndDispatch())
d.sleep();
}
d.dispose();
}
}
</source>
Tree: addTreeListener(TreeListener lis)
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.TreeEvent; import org.eclipse.swt.events.TreeListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.List; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class MainClass {
public static void main(String[] a) {
final Display d = new Display();
final Shell s = new Shell(d);
s.setSize(250, 200);
s.setText("A Tree Shell Example");
s.setLayout(new FillLayout(SWT.HORIZONTAL));
final Tree t = new Tree(s, SWT.SINGLE | SWT.BORDER);
final TreeItem child1 = new TreeItem(t, SWT.NONE, 0);
child1.setText("1");
// child1.setImage(new Image(d, "c:\\icons\\folder.gif"));
final TreeItem child2 = new TreeItem(t, SWT.NONE, 1);
child2.setText("2");
final TreeItem child2a = new TreeItem(child2, SWT.NONE, 0);
child2a.setText("2A");
final TreeItem child2b = new TreeItem(child2, SWT.NONE, 1);
child2b.setText("2B");
final TreeItem child3 = new TreeItem(t, SWT.NONE, 2);
child3.setText("3");
final List l = new List(s, SWT.BORDER | SWT.SINGLE);
t.addTreeListener(new TreeListener() {
public void treeExpanded(TreeEvent e) {
TreeItem ti = (TreeItem) e.item;
// ti.setImage(new Image(d, "c:\\icons\\open.gif"));
}
public void treeCollapsed(TreeEvent e) {
TreeItem ti = (TreeItem) e.item;
// ti.setImage(new Image(d, "c:\\icons\\folder.gif"));
}
});
t.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
TreeItem ti = (TreeItem) e.item;
populateList(ti.getText());
}
private void populateList(String type) {
if (type.equals("1")) {
l.removeAll();
l.add("1");
l.add("2");
}
if (type.equals("2")) {
l.removeAll();
}
if (type.equals("2A")) {
l.removeAll();
l.add("3");
l.add("4");
}
if (type.equals("2B")) {
l.removeAll();
l.add("5");
l.add("6");
}
if (type.equals("3")) {
l.removeAll();
l.add("7");
l.add("8");
}
}
});
s.open();
while (!s.isDisposed()) {
if (!d.readAndDispatch())
d.sleep();
}
d.dispose();
}
}
</source>
Tree: getSelection()
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.custom.TreeEditor; import org.eclipse.swt.events.FocusAdapter; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeItem; public class MainClass {
public static void main(String[] a) {
final Display d = new Display();
final Shell shell = new Shell(d);
shell.setSize(250, 200);
shell.setLayout(new FillLayout());
final Tree tree = new Tree(shell, SWT.SINGLE);
for (int i = 0; i < 3; i++) {
TreeItem iItem = new TreeItem(tree, SWT.NONE);
iItem.setText("Edit me by pressing F2 " + (i + 1));
iItem.setExpanded(true);
}
final TreeEditor editor = new TreeEditor(tree);
editor.horizontalAlignment = SWT.LEFT;
editor.grabHorizontal = true;
tree.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent event) {
if (event.keyCode == SWT.F2 && tree.getSelectionCount() == 1) {
final TreeItem item = tree.getSelection()[0];
final Text text = new Text(tree, SWT.NONE);
text.setText(item.getText());
text.setFocus();
text.addFocusListener(new FocusAdapter() {
public void focusLost(FocusEvent event) {
item.setText(text.getText());
text.dispose();
}
});
editor.setEditor(text, item);
}
}
});
shell.open();
while (!shell.isDisposed()) {
if (!d.readAndDispatch())
d.sleep();
}
d.dispose();
}
}
</source>
