dialogtab.java

很好的学习swt的 sample 很好的学习swt的 sample

package org.eclipse.swt.examples.controlexample;

/*
 * (c) Copyright IBM Corp. 2000, 2002.
 * This file is made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 */

import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.printing.*;
import org.eclipse.swt.events.*;

class DialogTab extends Tab {
	/* Example widgets and groups that contain them */
	Group dialogStyleGroup, resultGroup;
	Text textWidget;
	
	/* Style widgets added to the "Style" group */
	Combo dialogCombo;
	Button okButton, cancelButton;
	Button yesButton, noButton;
	Button retryButton;
	Button abortButton, ignoreButton;
	Button iconErrorButton, iconInformationButton, iconQuestionButton;
	Button iconWarningButton, iconWorkingButton;
	Button modelessButton, primaryModalButton, applicationModalButton, systemModalButton;
	Button saveButton, openButton;

	static String [] FilterExtensions	= {"*.txt", "*.bat", "*.doc"};
	static String [] FilterNames		= {ControlExample.getResourceString("FilterName_0"),
										   ControlExample.getResourceString("FilterName_1"),
										   ControlExample.getResourceString("FilterName_2")};

	/**
	 * Creates the Tab within a given instance of ControlExample.
	 */
	DialogTab(ControlExample instance) {
		super(instance);
	}

	/**
	 * Handle a button style selection event.
	 *
	 * @param event the selection event
	 */
	void buttonStyleSelected(SelectionEvent event) {
		/*
		 * Only certain combinations of button styles are
		 * supported for various dialogs.  Make sure the
		 * control widget reflects only valid combinations.
		 */
		okButton.setEnabled (
			!(yesButton.getSelection () || noButton.getSelection () || 
				retryButton.getSelection () || abortButton.getSelection () ||
					ignoreButton.getSelection ()));
		cancelButton.setEnabled (
			!(abortButton.getSelection () || ignoreButton.getSelection ()));
		yesButton.setEnabled (
			!(okButton.getSelection () || retryButton.getSelection () ||
				abortButton.getSelection () || ignoreButton.getSelection ()));
		noButton.setEnabled (
			!(okButton.getSelection () || retryButton.getSelection () ||
				abortButton.getSelection () || ignoreButton.getSelection ()));
		retryButton.setEnabled (
			!(okButton.getSelection() || yesButton.getSelection() || noButton.getSelection ()));
		abortButton.setEnabled (
			!(okButton.getSelection () || cancelButton.getSelection () ||
				yesButton.getSelection () || noButton.getSelection ()));
		ignoreButton.setEnabled (
			!(okButton.getSelection () || cancelButton.getSelection () |
				yesButton.getSelection () || noButton.getSelection ()));
	}
	
	/**
	 * Handle the create button selection event.
	 *
	 * @param event org.eclipse.swt.events.SelectionEvent
	 */
	void createButtonSelected(SelectionEvent event) {
	
		/* Compute the appropriate dialog style */
		int style = SWT.NULL;
		if (okButton.getEnabled () && okButton.getSelection ()) style |= SWT.OK;
		if (cancelButton.getEnabled () && cancelButton.getSelection ()) style |= SWT.CANCEL;
		if (yesButton.getEnabled () && yesButton.getSelection ()) style |= SWT.YES;
		if (noButton.getEnabled () && noButton.getSelection ()) style |= SWT.NO;
		if (retryButton.getEnabled () && retryButton.getSelection ()) style |= SWT.RETRY;
		if (abortButton.getEnabled () && abortButton.getSelection ()) style |= SWT.ABORT;
		if (ignoreButton.getEnabled () && ignoreButton.getSelection ()) style |= SWT.IGNORE;
		if (iconErrorButton.getEnabled () && iconErrorButton.getSelection ()) style |= SWT.ICON_ERROR;
		if (iconInformationButton.getEnabled () && iconInformationButton.getSelection ()) style |= SWT.ICON_INFORMATION;
		if (iconQuestionButton.getEnabled () && iconQuestionButton.getSelection ()) style |= SWT.ICON_QUESTION;
		if (iconWarningButton.getEnabled () && iconWarningButton.getSelection ()) style |= SWT.ICON_WARNING;
		if (iconWorkingButton.getEnabled () && iconWorkingButton.getSelection ()) style |= SWT.ICON_WORKING;
		if (primaryModalButton.getEnabled () && primaryModalButton.getSelection ()) style |= SWT.PRIMARY_MODAL;
		if (applicationModalButton.getEnabled () && applicationModalButton.getSelection ()) style |= SWT.APPLICATION_MODAL;
		if (systemModalButton.getEnabled () && systemModalButton.getSelection ()) style |= SWT.SYSTEM_MODAL;
		if (saveButton.getEnabled () && saveButton.getSelection ()) style |= SWT.SAVE;
		if (openButton.getEnabled () && openButton.getSelection ()) style |= SWT.OPEN;
	
		/* Open the appropriate dialog type */
		String name = dialogCombo.getText ();
		Shell shell = tabFolderPage.getShell ();
		
		if (name.equals (ControlExample.getResourceString("ColorDialog"))) {
			ColorDialog dialog = new ColorDialog (shell ,style);
			dialog.setRGB (new RGB (100, 100, 100));
			dialog.setText (ControlExample.getResourceString("Title"));
			RGB result = dialog.open ();
			textWidget.append (ControlExample.getResourceString("ColorDialog") + Text.DELIMITER);
			textWidget.append (ControlExample.getResourceString("Result", new String [] {"" + result}) + Text.DELIMITER + Text.DELIMITER);
			return;
		}
		
		if (name.equals (ControlExample.getResourceString("DirectoryDialog"))) {
			DirectoryDialog dialog = new DirectoryDialog (shell, style);
			dialog.setMessage (ControlExample.getResourceString("Example_string"));
			dialog.setText (ControlExample.getResourceString("Title"));
			String result = dialog.open ();
			textWidget.append (ControlExample.getResourceString("DirectoryDialog") + Text.DELIMITER);
			textWidget.append (ControlExample.getResourceString("Result", new String [] {"" + result}) + Text.DELIMITER + Text.DELIMITER);
			return;
		}
		
		if (name.equals (ControlExample.getResourceString("FileDialog"))) {
			FileDialog dialog = new FileDialog (shell, style);
			dialog.setFileName (ControlExample.getResourceString("readme_txt"));
			dialog.setFilterNames (FilterNames);
			dialog.setFilterExtensions (FilterExtensions);
			dialog.setText (ControlExample.getResourceString("Title"));
			String result = dialog.open();
			textWidget.append (ControlExample.getResourceString("FileDialog") + Text.DELIMITER);
			textWidget.append (ControlExample.getResourceString("Result", new String [] {"" + result}) + Text.DELIMITER + Text.DELIMITER);
			return;
		}
		
		if (name.equals (ControlExample.getResourceString("FontDialog"))) {
			FontDialog dialog = new FontDialog (shell, style);
			dialog.setText (ControlExample.getResourceString("Title"));
			FontData result = dialog.open ();
			textWidget.append (ControlExample.getResourceString("FontDialog") + Text.DELIMITER);
			textWidget.append (ControlExample.getResourceString("Result", new String [] {"" + result}) + Text.DELIMITER + Text.DELIMITER);
			return;
		}
		
		if (name.equals (ControlExample.getResourceString("PrintDialog"))) {
			PrintDialog dialog = new PrintDialog (shell, style);
			dialog.setText(ControlExample.getResourceString("Title"));
			PrinterData result = dialog.open ();
			textWidget.append (ControlExample.getResourceString("PrintDialog") + Text.DELIMITER);
			textWidget.append (ControlExample.getResourceString("Result", new String [] {"" + result}) + Text.DELIMITER + Text.DELIMITER);
			return;
		}
	
		if (name.equals(ControlExample.getResourceString("MessageBox"))) {
			MessageBox dialog = new MessageBox (shell, style);
			dialog.setMessage (ControlExample.getResourceString("Example_string"));
			dialog.setText (ControlExample.getResourceString("Title"));
			int result = dialog.open ();
			textWidget.append (ControlExample.getResourceString("MessageBox") + Text.DELIMITER);
			/*
			 * The resulting integer depends on the original
			 * dialog style.  Decode the result and display it.
			 */
			switch (result) {
				case SWT.OK:
					textWidget.append (ControlExample.getResourceString("Result", new String [] {"SWT.OK"}));
					break;
				case SWT.YES:
					textWidget.append (ControlExample.getResourceString("Result", new String [] {"SWT.YES"}));
					break;
				case SWT.NO:
					textWidget.append (ControlExample.getResourceString("Result", new String [] {"SWT.NO"}));
					break;
				case SWT.CANCEL:
					textWidget.append (ControlExample.getResourceString("Result", new String [] {"SWT.CANCEL"}));
					break;
				case SWT.ABORT: 
					textWidget.append (ControlExample.getResourceString("Result", new String [] {"SWT.ABORT"}));
					break;
				case SWT.RETRY:
					textWidget.append (ControlExample.getResourceString("Result", new String [] {"SWT.RETRY"}));
					break;
				case SWT.IGNORE:
					textWidget.append (ControlExample.getResourceString("Result", new String [] {"SWT.IGNORE"}));
					break;
				default:
					textWidget.append(ControlExample.getResourceString("Result", new String [] {"" + result}));
					break;
			}
			textWidget.append (Text.DELIMITER + Text.DELIMITER);
		}
	}
	
	/**
	 * Creates the "Control" group. 
	 */
	void createControlGroup () {
		/*
		 * Create the "Control" group.  This is the group on the
		 * left half of each example tab.  It consists of the
		 * style group, the display group and the size group.
		 */			
		controlGroup = new Group (tabFolderPage, SWT.NULL);
		GridLayout gridLayout= new GridLayout ();
		controlGroup.setLayout(gridLayout);
		gridLayout.numColumns = 2;
		gridLayout.makeColumnsEqualWidth = true;
		controlGroup.setLayoutData (new GridData (GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
		controlGroup.setText (ControlExample.getResourceString("Parameters"));
		
		/*
		 * Create a group to hold the dialog style combo box and
		 * create dialog button.
		 */
		dialogStyleGroup = new Group (controlGroup, SWT.NULL);
		dialogStyleGroup.setLayout (new GridLayout ());
		GridData gridData = new GridData (GridData.HORIZONTAL_ALIGN_CENTER);