swtbrowser.java

SWT开发的Java调用COM的工具集

/*
 * Copyright (c) 2007 Software Wizards Pty Ltd, Victoria, Australia.
 * mailto:[e-mail]. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted. See the GNU General Public License
 * for more details.
 *
 * Redistribution of the SWTtoCOM software is not permitted as part of any
 * commercial product. Licensing terms for such distribution may be
 * obtained from the copyright holder.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package au.com.swz.swttocom.example.browser;

import org.eclipse.jface.action.Separator;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;

import au.com.swz.swttocom.example.browser.actions.CopyAction;
import au.com.swz.swttocom.example.browser.actions.GoBackAction;
import au.com.swz.swttocom.example.browser.actions.GoForwardAction;
import au.com.swz.swttocom.example.browser.actions.GoHomeAction;
import au.com.swz.swttocom.example.browser.actions.GoSearchAction;
import au.com.swz.swttocom.example.browser.actions.NewBrowserTabAction;
import au.com.swz.swttocom.example.browser.actions.PrintAction;
import au.com.swz.swttocom.example.browser.actions.PrintPreviewAction;
import au.com.swz.swttocom.example.browser.actions.RefreshAction;
import au.com.swz.swttocom.example.browser.actions.SaveAsAction;
import au.com.swz.swttocom.example.browser.actions.StopAction;

public class SWTBrowser extends Composite {
	
	private static final Image TAB_IMAGE = ImageDescriptor.createFromFile(
			SWTBrowser.class, "actions/images/globe.gif").createImage(); //$NON-NLS-1$
	
	private CTabFolder tabFolder;
	private GoBackAction goBackAction;
	private GoForwardAction goForwardAction;
	private StatusBar statusBar;
	private AddressBar addressBar;

	public SWTBrowser(Composite parent, int style) {
		super(parent, style);
		Display display = Display.getDefault();
		
		GridLayout thisLayout = new GridLayout(1, true);
		thisLayout.marginWidth = 0;
		thisLayout.marginHeight = 0;
		thisLayout.numColumns = 1;
		thisLayout.makeColumnsEqualWidth = true;
		thisLayout.horizontalSpacing = 0;
		thisLayout.verticalSpacing = 0;
		this.setLayout(thisLayout);
		
		ToolBarManager tbManager = new ToolBarManager(SWT.FLAT);
		tbManager.add(new NewBrowserTabAction(this));
		tbManager.add(new Separator());
		goBackAction = new GoBackAction(this);
		tbManager.add(goBackAction);
		goForwardAction = new GoForwardAction(this);
		tbManager.add(goForwardAction);
		tbManager.add(new StopAction(this));
		tbManager.add(new RefreshAction(this));
		tbManager.add(new GoHomeAction(this));
		tbManager.add(new Separator());
		tbManager.add(new GoSearchAction(this));
		tbManager.add(new PrintAction(this));
		tbManager.add(new PrintPreviewAction(this));
		tbManager.add(new CopyAction(this));
		tbManager.add(new SaveAsAction(this));
		
		ToolBar toolbar = tbManager.createControl(this);
		toolbar.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		
		addressBar = new AddressBar(this);
		Control addressBarControl = addressBar.createComposite(this);
		addressBarControl.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

		tabFolder = new CTabFolder(this, SWT.TOP);
		tabFolder.setLayoutData(new GridData(GridData.FILL_BOTH));
		tabFolder.setSimple(false);
		tabFolder.setSelectionBackground(new Color[] {
				display.getSystemColor(SWT.COLOR_TITLE_BACKGROUND),
				display.getSystemColor(SWT.COLOR_TITLE_BACKGROUND_GRADIENT) },
				new int[] { 90 }, true);
		tabFolder.setSelectionForeground(display
				.getSystemColor(SWT.COLOR_TITLE_FOREGROUND));
		
		tabFolder.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				BrowserTabItem tabItem = getSelection();
				if (tabItem != null) {
					enableBack(tabItem.isBackEnabled());
					enableForward(tabItem.isForwardEnabled());
					setAddressText(tabItem.getAddress());
				} else {
					enableBack(false);
					enableForward(false);
					setAddressText("");
				}
			}
		});

		statusBar = new StatusBar();
		Control statusBarControl = statusBar.createComposite(this);
		statusBarControl.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		openNewTab();
	}

	public BrowserTabItem openNewTab() {
		CTabItem tabItem = new CTabItem(tabFolder, SWT.CLOSE);
		tabFolder.setSelection(tabItem);
		tabItem.setText("");
		BrowserTabItem browser = new BrowserTabItem(this, tabItem);
		tabItem.setControl(browser.createComposite(tabFolder));
		tabItem.setImage(TAB_IMAGE);
		tabItem.addListener(SWT.Dispose, new Listener() {
			public void handleEvent(Event e) {
				CTabItem tabItem = (CTabItem)e.widget;
				tabItem.getControl().dispose();
			}
		});
		tabItem.setData(browser);
		browser.goHome();
		return browser;
	}
	
	public BrowserTabItem getSelection() {
		CTabItem tabItem = tabFolder.getSelection();
		if (tabItem == null) {
			return null;
		}
		return (BrowserTabItem) tabItem.getData();
	}
	
	void enableBack(boolean enable) {
		goBackAction.setEnabled(enable);
	}

	void enableForward(boolean enable) {
		goForwardAction.setEnabled(enable);
	}

	void setStatusText(String text) {
		statusBar.setText(text);
	}

	void setProgress(int progress, int progressMax) {
		statusBar.setProgress(progress, progressMax);
	}

	void setAddressText(String text) {
		addressBar.setAddress(text);
	}
	
	public static void main(String[] args) {
		try {
			Display display = Display.getDefault();
			Shell shell = new Shell(display);
			shell.setText("SWTtoCOM Browser");
			new SWTBrowser(shell, SWT.NULL);
			shell.setLayout(new FillLayout());
			Rectangle shellBounds = shell.computeTrim(0, 0, 800, 600);
			shell.setSize(shellBounds.width, shellBounds.height);
			shell.open();
			while (!shell.isDisposed()) {
				if (!display.readAndDispatch())
					display.sleep();
			}
			TAB_IMAGE.dispose();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
}