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/*******************************************************************************
* Copyright (c) 2000, 2017 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.examples.layoutexample;
import java.text.MessageFormat;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ShellListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
public class LayoutExample {
private static ResourceBundle resourceBundle = ResourceBundle.getBundle("examples_layout");
private TabFolder tabFolder;
/**
* Creates an instance of a LayoutExample embedded inside
* the supplied parent Composite.
*
* @param parent the container of the example
*/
public LayoutExample(Composite parent) {
tabFolder = new TabFolder (parent, SWT.NONE);
Tab [] tabs = new Tab [] {
new FillLayoutTab (this),
new RowLayoutTab (this),
new GridLayoutTab (this),
new FormLayoutTab (this),
new StackLayoutTab (this)
};
for (Tab tab : tabs) {
TabItem item = new TabItem (tabFolder, SWT.NONE);
item.setText (tab.getTabText ());
item.setControl (tab.createTabFolderPage (tabFolder));
}
}
/**
* Grabs input focus.
*/
public void setFocus() {
tabFolder.setFocus();
}
/**
* Disposes of all resources associated with a particular
* instance of the LayoutExample.
*/
public void dispose() {
tabFolder = null;
}
/**
* Invokes as a standalone program.
*/
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
new LayoutExample(shell);
shell.setText(getResourceString("window.title"));
shell.addShellListener(ShellListener.shellClosedAdapter(e -> {
Shell[] shells = display.getShells();
for (Shell currentShell : shells) {
if (currentShell != shell)
currentShell.close();
}
}));
shell.open();
while (! shell.isDisposed()) {
if (! display.readAndDispatch()) display.sleep();
}
}
/**
* Gets a string from the resource bundle.
* We don't want to crash because of a missing String.
* Returns the key if not found.
*/
static String getResourceString(String key) {
try {
return resourceBundle.getString(key);
} catch (MissingResourceException e) {
return key;
} catch (NullPointerException e) {
return "!" + key + "!";
}
}
/**
* Gets a string from the resource bundle and binds it
* with the given arguments. If the key is not found,
* return the key.
*/
static String getResourceString(String key, Object[] args) {
try {
return MessageFormat.format(getResourceString(key), args);
} catch (MissingResourceException e) {
return key;
} catch (NullPointerException e) {
return "!" + key + "!";
}
}
}
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