SWT Browser(内嵌浏览器)

import java.util.ArrayList; import java.util.List; import org.apache.commons.lang.StringUtils; import org.eclipse.swt.SWT; import org.eclipse.swt.browser.Browser; import org.eclipse.swt.browser.CloseWindowListener; import org.eclipse.swt.browser.LocationAdapter; import org.eclipse.swt.browser.LocationEvent; import org.eclipse.swt.browser.OpenWindowListener; import org.eclipse.swt.browser.ProgressEvent; import org.eclipse.swt.browser.ProgressListener; import org.eclipse.swt.browser.StatusTextEvent; import org.eclipse.swt.browser.StatusTextListener; import org.eclipse.swt.browser.TitleEvent; import org.eclipse.swt.browser.TitleListener; import org.eclipse.swt.browser.WindowEvent; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.custom.CTabFolder; import org.eclipse.swt.custom.CTabItem; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.MouseAdapter; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.FormAttachment; import org.eclipse.swt.layout.FormData; import org.eclipse.swt.layout.FormLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.ProgressBar; import org.eclipse.ui.forms.widgets.FormToolkit; import com.sinosoft.media360.server.domain.News_Document; import com.sinosoft.media360.util.NewActionMenu; import com.swtdesigner.SWTResourceManager; public class BrowserComposite extends Composite { private static final String DEFAULT_BLANK_URL = "about:blank"; private static final String BROWSER_DATA_STATUS = "status"; private List invalidTitleList = new ArrayList(); private final static FormToolkit toolkit = new FormToolkit(Display.getCurrent()); private static Combo combUrl; private CTabFolder browserFolder; private CTabItem newTab; private CLabel statusLabel; private ProgressBar progressBar; { invalidTitleList.add(DEFAULT_BLANK_URL); invalidTitleList.add("503 Service Unavailable"); invalidTitleList.add("导航已取消"); invalidTitleList.add("Internet Explorer 无法显示该网页"); invalidTitleList.add("无法显示此页"); } /** * Create the composite * * @param parent * @param style */ public BrowserComposite(Composite parent, int style) { super(parent, style); setLayout(new FormLayout()); toolkit.adapt(this); toolkit.paintBordersFor(this); final Composite composite = toolkit.createComposite(this, SWT.NO_TRIM | SWT.RESIZE); final GridLayout gridLayout = new GridLayout(); gridLayout.horizontalSpacing = 2; gridLayout.numColumns = 7; composite.setLayout(gridLayout); final FormData fd_composite = new FormData(); fd_composite.right = new FormAttachment(100, -5); fd_composite.bottom = new FormAttachment(0, 40); fd_composite.top = new FormAttachment(0, 0); fd_composite.left = new FormAttachment(0, 5); composite.setLayoutData(fd_composite); toolkit.paintBordersFor(composite); final Button newBt = new Button(composite, SWT.NONE); newBt.setToolTipText("新建浏览器"); newBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/tool_new.gif")); newBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); // 打开新的浏览器窗口 newBt.addSelectionListener(new SelectionAdapter() { public void widgetSelected(final SelectionEvent e) { openNewBrowserTab(); } }); toolkit.adapt(newBt, true, true); final Label label_1 = new Label(composite, SWT.SEPARATOR); label_1.setLayoutData(new GridData(SWT.DEFAULT, 35)); toolkit.adapt(label_1, true, true); ButtonSelectionListener listener = new ButtonSelectionListener(); final Button backBt = new Button(composite, SWT.NONE); backBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); backBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/back.gif")); backBt.addSelectionListener(listener); backBt.setToolTipText("后退"); toolkit.adapt(backBt, true, true); final Button forwardBt = new Button(composite, SWT.NONE); forwardBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/forward.gif")); forwardBt.addSelectionListener(listener); forwardBt.setToolTipText("前进"); forwardBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); toolkit.adapt(forwardBt, true, true); combUrl = new Combo(composite, SWT.BORDER); combUrl.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false)); combUrl.setVisibleItemCount(25); combUrl.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { openEnteredUrl(false); } }); combUrl.addKeyListener(new KeyAdapter() { // 按回车或数字键盘的Enter则浏览内容 public void keyPressed(final KeyEvent e) { if(e.keyCode == SWT.CR || e.keyCode ==SWT.KEYPAD_CR){ openEnteredUrl(true); } } }); toolkit.adapt(combUrl, true, true); final Button refreshBt = new Button(composite, SWT.NONE); refreshBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/tool_refresh.gif")); refreshBt.addSelectionListener(listener); refreshBt.setToolTipText("刷新"); refreshBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); toolkit.adapt(refreshBt, true, true); final Button stopBt = new Button(composite, SWT.NONE); stopBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/stop.gif")); stopBt.addSelectionListener(listener); stopBt.setToolTipText("停止"); stopBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); toolkit.adapt(stopBt, true, true); browserFolder = new CTabFolder(this, SWT.BORDER); browserFolder.setMinimumCharacters(8); browserFolder.setSelectionBackground(SWTResourceManager.getColor(227,238,251)); browserFolder.setTabHeight(25); browserFolder.addSelectionListener(new SelectionAdapter() { public void widgetSelected(final SelectionEvent e) { if(e.item == newTab){ openNewBrowserTab(); //新选项卡 }else{ Browser browser = (Browser) ((CTabItem) e.item).getControl(); if (browser != null ) { String url = browser.getUrl(); if("".equals(url)){ url = DEFAULT_BLANK_URL; } combUrl.setText(url); if (url.equals(DEFAULT_BLANK_URL)) { combUrl.setFocus(); } String status = (String) browser.getData(BROWSER_DATA_STATUS); if (status != null) { statusLabel.setText(status); } progressBar.setVisible(false); } } } }); browserFolder.addMouseListener(new MouseAdapter() { // 双击关闭选中的浏览器窗口 public void mouseDoubleClick(final MouseEvent e) { CTabItem tab = browserFolder.getItem(new Point(e.x, e.y)); if (tab != null && tab != newTab) { tab.dispose(); if (browserFolder.getItemCount() == 1) { openNewBrowserTab(); } } else { openNewBrowserTab(); } } }); final FormData fd_tabFolder = new FormData(); fd_tabFolder.left = new FormAttachment(composite, 0, SWT.LEFT); fd_tabFolder.right = new FormAttachment(composite, 0, SWT.RIGHT); fd_tabFolder.top = new FormAttachment(composite, 5, SWT.BOTTOM); browserFolder.setLayoutData(fd_tabFolder); toolkit.adapt(browserFolder, true, true); newTab = new CTabItem(browserFolder, SWT.NONE); // newTab.setText(" "); newTab.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/newTab.jpg")); newTab.setToolTipText("新选项卡"); statusLabel = new CLabel(this, SWT.NONE); fd_tabFolder.bottom = new FormAttachment(statusLabel, -5, SWT.TOP); final FormData fd_statusLabel = new FormData(); fd_statusLabel.left = new FormAttachment(browserFolder, 0, SWT.LEFT); fd_statusLabel.right = new FormAttachment(100, -210); fd_statusLabel.bottom = new FormAttachment(100, -5); statusLabel.setLayoutData(fd_statusLabel); toolkit.adapt(statusLabel, true, true); statusLabel.setText("状态栏"); progressBar = new ProgressBar(this, SWT.NONE); final FormData fd_progressBar = new FormData(); fd_progressBar.bottom = new FormAttachment(statusLabel, 0, SWT.BOTTOM); fd_progressBar.left = new FormAttachment(100, -200); fd_progressBar.right = new FormAttachment(browserFolder, 0, SWT.RIGHT); progressBar.setLayoutData(fd_progressBar); toolkit.adapt(progressBar, true, true); openNewBrowserTab(); } private void addUrlToCombo(String url){ if(!DEFAULT_BLANK_URL.equals(url)){ int index = combUrl.indexOf(url); if(index > 0){ combUrl.remove(index); } if(index != 0){ combUrl.add(url, 0); } combUrl.select(0); if(combUrl.getItemCount() > 50){ combUrl.remove(50, combUrl.getItemCount()-1); } } } /** * 打开网页 * @param newTabItem 是否在新选项卡中打开 */ private void openEnteredUrl(boolean newTabItem) { String url = combUrl.getText(); if (!("".equals(url) || DEFAULT_BLANK_URL.equals(url))) { Browser browser = null; CTabItem tabItem = browserFolder.getSelection(); String itemTitle = tabItem.getToolTipText(); if(newTabItem && !invalidTitleList.contains(itemTitle)){ browser = openNewBrowserTab(); }else{ browser = (Browser) tabItem.getControl(); } browser.setUrl(url); CTabItem item = ((CTabFolder)browser.getParent()).getSelection(); item.setText(StringUtils.abbreviate(url, 20)); item.setToolTipText(url); addUrlToCombo(url); } } /** * 打开一个新选项卡 * @return 新选项卡中的Broser对象 */ private Browser openNewBrowserTab() { final CTabItem browserTab = new CTabItem(browserFolder, SWT.NONE, browserFolder.getItemCount()-1); browserTab.setShowClose(true); browserTab.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/ie.gif")); browserFolder.setSelection(browserTab); final Browser browser = new Browser(browserFolder, SWT.NONE); initialize(browser); browserTab.setText(DEFAULT_BLANK_URL); browserTab.setToolTipText(DEFAULT_BLANK_URL); combUrl.setText(DEFAULT_BLANK_URL); combUrl.setFocus(); toolkit.adapt(browser, true, true); browserTab.setControl(browser); return browser; } /** register WindowEvent listeners */ private void initialize(final Browser browser) { browser.addOpenWindowListener(new OpenWindowListener() { //打开一个新的浏览器窗口事件 public void open(WindowEvent event) { event.browser = openNewBrowserTab(); } }); browser.addCloseWindowListener(new CloseWindowListener() { //关闭浏览器事件 public void close(WindowEvent event) { Browser browser = (Browser) event.widget; ((CTabFolder)browser.getParent()).getSelection().dispose(); } }); browser.addProgressListener(new ProgressListener() { //装载网页事件 public void changed(ProgressEvent event) { if (browserFolder.getSelection().getControl() == browser) { if (!progressBar.isVisible()) { progressBar.setVisible(true); } if (event.current < event.total) { progressBar.setMaximum(event.total); progressBar.setSelection(event.current); } else { progressBar.setVisible(false); } } } public void completed(ProgressEvent event) { if (browserFolder.getSelection().getControl() == browser) progressBar.setVisible(false); } }); browser.addStatusTextListener(new StatusTextListener() { //状态栏改变事件 public void changed(StatusTextEvent event) { browser.setData(BROWSER_DATA_STATUS, event.text); if (browserFolder.getSelection().getControl() == browser) { statusLabel.setText(event.text); } } }); browser.addTitleListener(new TitleListener() { //标题改变事件 public void changed(TitleEvent event) { CTabItem item = ((CTabFolder)browser.getParent()).getSelection(); item.setText(StringUtils.abbreviate(event.title, 20)); item.setToolTipText(event.title); } }); browser.addLocationListener(new LocationAdapter() { //为浏览器注册地址改变事件 @Override public void changed(LocationEvent e) { if(e.top){ addUrlToCombo(e.location); } } }); News_Document doc = new News_Document(); new NewActionMenu(browser, doc, true); //设置右键 } class ButtonSelectionListener extends SelectionAdapter{ @Override public void widgetSelected(SelectionEvent e) { String operationName = ((Button)e.widget).getToolTipText(); Browser browser = (Browser)browserFolder.getSelection().getControl(); if(browser != null){ if("后退".equals(operationName)){ if(browser.isBackEnabled()){ browser.back(); } }else if("前进".equals(operationName)){ if(browser.isForwardEnabled()){ browser.forward(); } }else if("刷新".equals(operationName)){ browser.refresh(); }else if("停止".equals(operationName)){ browser.stop(); } } } } }