SWT Browser(内嵌浏览器)

browser浏览器swtbuttonurlstring

 

原文地址：http://blog.youkuaiyun.com/hemingwang0902/article/details/4405310

[java] view plaincopy

1. import java.util.ArrayList;  
2. import java.util.List;  
3.   
4. import org.apache.commons.lang.StringUtils;  
5. import org.eclipse.swt.SWT;  
6. import org.eclipse.swt.browser.Browser;  
7. import org.eclipse.swt.browser.CloseWindowListener;  
8. import org.eclipse.swt.browser.LocationAdapter;  
9. import org.eclipse.swt.browser.LocationEvent;  
10. import org.eclipse.swt.browser.OpenWindowListener;  
11. import org.eclipse.swt.browser.ProgressEvent;  
12. import org.eclipse.swt.browser.ProgressListener;  
13. import org.eclipse.swt.browser.StatusTextEvent;  
14. import org.eclipse.swt.browser.StatusTextListener;  
15. import org.eclipse.swt.browser.TitleEvent;  
16. import org.eclipse.swt.browser.TitleListener;  
17. import org.eclipse.swt.browser.WindowEvent;  
18. import org.eclipse.swt.custom.CLabel;  
19. import org.eclipse.swt.custom.CTabFolder;  
20. import org.eclipse.swt.custom.CTabItem;  
21. import org.eclipse.swt.events.KeyAdapter;  
22. import org.eclipse.swt.events.KeyEvent;  
23. import org.eclipse.swt.events.MouseAdapter;  
24. import org.eclipse.swt.events.MouseEvent;  
25. import org.eclipse.swt.events.SelectionAdapter;  
26. import org.eclipse.swt.events.SelectionEvent;  
27. import org.eclipse.swt.graphics.Point;  
28. import org.eclipse.swt.layout.FormAttachment;  
29. import org.eclipse.swt.layout.FormData;  
30. import org.eclipse.swt.layout.FormLayout;  
31. import org.eclipse.swt.layout.GridData;  
32. import org.eclipse.swt.layout.GridLayout;  
33. import org.eclipse.swt.widgets.Button;  
34. import org.eclipse.swt.widgets.Combo;  
35. import org.eclipse.swt.widgets.Composite;  
36. import org.eclipse.swt.widgets.Display;  
37. import org.eclipse.swt.widgets.Label;  
38. import org.eclipse.swt.widgets.ProgressBar;  
39. import org.eclipse.ui.forms.widgets.FormToolkit;  
40.   
41. import com.sinosoft.media360.server.domain.News_Document;  
42. import com.sinosoft.media360.util.NewActionMenu;  
43. import com.swtdesigner.SWTResourceManager;  
44.   
45. public class BrowserComposite extends Composite {  
46.     private static final String DEFAULT_BLANK_URL = "about:blank";  
47.     private static final String BROWSER_DATA_STATUS = "status";  
48.     private List<String> invalidTitleList = new ArrayList<String>();  
49.       
50.     private final static FormToolkit toolkit = new FormToolkit(Display.getCurrent());  
51.     private static Combo combUrl;  
52.     private CTabFolder browserFolder;  
53.     private CTabItem newTab;  
54.     private CLabel statusLabel;  
55.     private ProgressBar progressBar;  
56.       
57.     {  
58.         invalidTitleList.add(DEFAULT_BLANK_URL);  
59.         invalidTitleList.add("503 Service Unavailable");  
60.         invalidTitleList.add("导航已取消");  
61.         invalidTitleList.add("Internet Explorer 无法显示该网页");  
62.         invalidTitleList.add("无法显示此页");  
63.     }  
64.       
65.   
66.     /** 
67.      * Create the composite 
68.      *  
69.      * @param parent 
70.      * @param style 
71.      */  
72.     public BrowserComposite(Composite parent, int style) {  
73.         super(parent, style);  
74.         setLayout(new FormLayout());  
75.         toolkit.adapt(this);  
76.         toolkit.paintBordersFor(this);  
77.   
78.         final Composite composite = toolkit.createComposite(this, SWT.NO_TRIM | SWT.RESIZE);  
79.         final GridLayout gridLayout = new GridLayout();  
80.         gridLayout.horizontalSpacing = 2;  
81.         gridLayout.numColumns = 7;  
82.         composite.setLayout(gridLayout);  
83.         final FormData fd_composite = new FormData();  
84.         fd_composite.right = new FormAttachment(100, -5);  
85.         fd_composite.bottom = new FormAttachment(0, 40);  
86.         fd_composite.top = new FormAttachment(0, 0);  
87.         fd_composite.left = new FormAttachment(0, 5);  
88.         composite.setLayoutData(fd_composite);  
89.         toolkit.paintBordersFor(composite);  
90.   
91.         final Button newBt = new Button(composite, SWT.NONE);  
92.         newBt.setToolTipText("新建浏览器");  
93.         newBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/tool_new.gif"));  
94.         newBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));  
95.         // 打开新的浏览器窗口  
96.         newBt.addSelectionListener(new SelectionAdapter() {  
97.             public void widgetSelected(final SelectionEvent e) {  
98.                 openNewBrowserTab();  
99.             }  
100.         });  
101.         toolkit.adapt(newBt, true, true);  
102.   
103.         final Label label_1 = new Label(composite, SWT.SEPARATOR);  
104.         label_1.setLayoutData(new GridData(SWT.DEFAULT, 35));  
105.         toolkit.adapt(label_1, true, true);  
106.   
107.         ButtonSelectionListener listener = new ButtonSelectionListener();  
108.           
109.         final Button backBt = new Button(composite, SWT.NONE);  
110.         backBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));  
111.         backBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/back.gif"));  
112.         backBt.addSelectionListener(listener);  
113.         backBt.setToolTipText("后退");  
114.         toolkit.adapt(backBt, true, true);  
115.   
116.         final Button forwardBt = new Button(composite, SWT.NONE);  
117.         forwardBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/forward.gif"));  
118.         forwardBt.addSelectionListener(listener);  
119.         forwardBt.setToolTipText("前进");  
120.         forwardBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));  
121.         toolkit.adapt(forwardBt, true, true);  
122.   
123.         combUrl = new Combo(composite, SWT.BORDER);  
124.         combUrl.setLayoutData(new GridData(GridData.FILL, GridData.CENTER, true, false));  
125.         combUrl.setVisibleItemCount(25);  
126.         combUrl.addSelectionListener(new SelectionAdapter() {  
127.             @Override  
128.             public void widgetSelected(SelectionEvent e) {  
129.                 openEnteredUrl(false);  
130.             }  
131.         });  
132.         combUrl.addKeyListener(new KeyAdapter() {  
133.             // 按回车或数字键盘的Enter则浏览内容  
134.             public void keyPressed(final KeyEvent e) {  
135.                 if(e.keyCode == SWT.CR || e.keyCode ==SWT.KEYPAD_CR){  
136.                     openEnteredUrl(true);  
137.                 }  
138.             }  
139.         });  
140.         toolkit.adapt(combUrl, true, true);  
141.           
142.         final Button refreshBt = new Button(composite, SWT.NONE);  
143.         refreshBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/tool_refresh.gif"));  
144.         refreshBt.addSelectionListener(listener);  
145.         refreshBt.setToolTipText("刷新");  
146.         refreshBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));  
147.         toolkit.adapt(refreshBt, true, true);  
148.           
149.         final Button stopBt = new Button(composite, SWT.NONE);  
150.         stopBt.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/stop.gif"));  
151.         stopBt.addSelectionListener(listener);  
152.         stopBt.setToolTipText("停止");  
153.         stopBt.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));  
154.         toolkit.adapt(stopBt, true, true);  
155.   
156.         browserFolder = new CTabFolder(this, SWT.BORDER);  
157.         browserFolder.setMinimumCharacters(8);  
158.         browserFolder.setSelectionBackground(SWTResourceManager.getColor(227,238,251));  
159.         browserFolder.setTabHeight(25);  
160.         browserFolder.addSelectionListener(new SelectionAdapter() {  
161.             public void widgetSelected(final SelectionEvent e) {  
162.                 if(e.item == newTab){  
163.                     openNewBrowserTab();    //新选项卡  
164.                 }else{  
165.                     Browser browser = (Browser) ((CTabItem) e.item).getControl();  
166.                     if (browser != null ) {  
167.                         String url = browser.getUrl();  
168.                         if("".equals(url)){  
169.                             url = DEFAULT_BLANK_URL;  
170.                         }  
171.                         combUrl.setText(url);  
172.                         if (url.equals(DEFAULT_BLANK_URL)) {  
173.                             combUrl.setFocus();  
174.                         }  
175.                           
176.                         String status = (String) browser.getData(BROWSER_DATA_STATUS);  
177.                         if (status != null) {  
178.                             statusLabel.setText(status);  
179.                         }  
180.                           
181.                         progressBar.setVisible(false);  
182.                     }  
183.                 }  
184.             }  
185.         });  
186.   
187.         browserFolder.addMouseListener(new MouseAdapter() {  
188.             // 双击关闭选中的浏览器窗口  
189.             public void mouseDoubleClick(final MouseEvent e) {  
190.                 CTabItem tab = browserFolder.getItem(new Point(e.x, e.y));  
191.                 if (tab != null && tab != newTab) {  
192.                     tab.dispose();  
193.                     if (browserFolder.getItemCount() == 1) {  
194.                         openNewBrowserTab();  
195.                     }  
196.                 } else {  
197.                     openNewBrowserTab();  
198.                 }  
199.             }  
200.         });  
201.         final FormData fd_tabFolder = new FormData();  
202.         fd_tabFolder.left = new FormAttachment(composite, 0, SWT.LEFT);  
203.         fd_tabFolder.right = new FormAttachment(composite, 0, SWT.RIGHT);  
204.         fd_tabFolder.top = new FormAttachment(composite, 5, SWT.BOTTOM);  
205.         browserFolder.setLayoutData(fd_tabFolder);  
206.         toolkit.adapt(browserFolder, true, true);  
207.           
208.         newTab = new CTabItem(browserFolder, SWT.NONE);  
209. //      newTab.setText("    ");  
210.         newTab.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/newTab.jpg"));  
211.         newTab.setToolTipText("新选项卡");  
212.           
213.         statusLabel = new CLabel(this, SWT.NONE);  
214.         fd_tabFolder.bottom = new FormAttachment(statusLabel, -5, SWT.TOP);  
215.         final FormData fd_statusLabel = new FormData();  
216.         fd_statusLabel.left = new FormAttachment(browserFolder, 0, SWT.LEFT);  
217.         fd_statusLabel.right = new FormAttachment(100, -210);  
218.         fd_statusLabel.bottom = new FormAttachment(100, -5);  
219.         statusLabel.setLayoutData(fd_statusLabel);  
220.         toolkit.adapt(statusLabel, true, true);  
221.         statusLabel.setText("状态栏");  
222.   
223.         progressBar = new ProgressBar(this, SWT.NONE);  
224.         final FormData fd_progressBar = new FormData();  
225.         fd_progressBar.bottom = new FormAttachment(statusLabel, 0, SWT.BOTTOM);  
226.         fd_progressBar.left = new FormAttachment(100, -200);  
227.         fd_progressBar.right = new FormAttachment(browserFolder, 0, SWT.RIGHT);  
228.         progressBar.setLayoutData(fd_progressBar);  
229.         toolkit.adapt(progressBar, true, true);  
230.           
231.         openNewBrowserTab();  
232.     }  
233.       
234.     private void addUrlToCombo(String url){  
235.         if(!DEFAULT_BLANK_URL.equals(url)){  
236.             int index = combUrl.indexOf(url);  
237.             if(index > 0){  
238.                 combUrl.remove(index);  
239.             }  
240.             if(index != 0){  
241.                 combUrl.add(url, 0);  
242.             }  
243.             combUrl.select(0);  
244.             if(combUrl.getItemCount() > 50){  
245.                 combUrl.remove(50, combUrl.getItemCount()-1);  
246.             }  
247.         }  
248.     }  
249.       
250.     /** 
251.      * 打开网页 
252.      * @param newTabItem 是否在新选项卡中打开 
253.      */  
254.     private void openEnteredUrl(boolean newTabItem) {  
255.         String url = combUrl.getText();  
256.         if (!("".equals(url) || DEFAULT_BLANK_URL.equals(url))) {  
257.             Browser browser = null;  
258.             CTabItem tabItem = browserFolder.getSelection();  
259.             String itemTitle = tabItem.getToolTipText();  
260.             if(newTabItem && !invalidTitleList.contains(itemTitle)){  
261.                 browser = openNewBrowserTab();  
262.             }else{  
263.                 browser = (Browser) tabItem.getControl();  
264.             }  
265.             browser.setUrl(url);  
266.             CTabItem item = ((CTabFolder)browser.getParent()).getSelection();  
267.             item.setText(StringUtils.abbreviate(url, 20));  
268.             item.setToolTipText(url);  
269.             addUrlToCombo(url);  
270.         }  
271.     }  
272.   
273.     /** 
274.      * 打开一个新选项卡 
275.      * @return 新选项卡中的Broser对象 
276.      */  
277.     private Browser openNewBrowserTab() {  
278.         final CTabItem browserTab = new CTabItem(browserFolder, SWT.NONE, browserFolder.getItemCount()-1);  
279.         browserTab.setShowClose(true);  
280.         browserTab.setImage(SWTResourceManager.getImage(BrowserComposite.class, "/ie.gif"));  
281.         browserFolder.setSelection(browserTab);  
282.           
283.         final Browser browser = new Browser(browserFolder, SWT.NONE);  
284.         initialize(browser);  
285.         browserTab.setText(DEFAULT_BLANK_URL);  
286.         browserTab.setToolTipText(DEFAULT_BLANK_URL);  
287.         combUrl.setText(DEFAULT_BLANK_URL);  
288.         combUrl.setFocus();  
289.         toolkit.adapt(browser, true, true);  
290.         browserTab.setControl(browser);  
291.         return browser;  
292.     }  
293.   
294.     /** register WindowEvent listeners */  
295.     private void initialize(final Browser browser) {  
296.         browser.addOpenWindowListener(new OpenWindowListener() {    //打开一个新的浏览器窗口事件  
297.             public void open(WindowEvent event) {  
298.                 event.browser = openNewBrowserTab();  
299.             }  
300.         });  
301.   
302.         browser.addCloseWindowListener(new CloseWindowListener() {  //关闭浏览器事件  
303.             public void close(WindowEvent event) {  
304.                 Browser browser = (Browser) event.widget;  
305.                 ((CTabFolder)browser.getParent()).getSelection().dispose();  
306.             }  
307.         });  
308.         browser.addProgressListener(new ProgressListener() {    //装载网页事件  
309.             public void changed(ProgressEvent event) {  
310.                 if (browserFolder.getSelection().getControl() == browser) {  
311.                     if (!progressBar.isVisible()) {  
312.                         progressBar.setVisible(true);  
313.                     }  
314.                     if (event.current < event.total) {  
315.                         progressBar.setMaximum(event.total);  
316.                         progressBar.setSelection(event.current);  
317.                     } else {  
318.                         progressBar.setVisible(false);  
319.                     }  
320.                 }  
321.             }  
322.   
323.             public void completed(ProgressEvent event) {  
324.                 if (browserFolder.getSelection().getControl() == browser)  
325.                     progressBar.setVisible(false);  
326.             }  
327.         });  
328.         browser.addStatusTextListener(new StatusTextListener() {    //状态栏改变事件  
329.             public void changed(StatusTextEvent event) {  
330.                 browser.setData(BROWSER_DATA_STATUS, event.text);  
331.                 if (browserFolder.getSelection().getControl() == browser) {  
332.                     statusLabel.setText(event.text);  
333.                 }  
334.             }  
335.         });  
336.         browser.addTitleListener(new TitleListener() {  //标题改变事件  
337.             public void changed(TitleEvent event) {  
338.                 CTabItem item = ((CTabFolder)browser.getParent()).getSelection();  
339.                 item.setText(StringUtils.abbreviate(event.title, 20));  
340.                 item.setToolTipText(event.title);  
341.             }  
342.         });  
343.           
344.           
345.         browser.addLocationListener(new LocationAdapter() { //为浏览器注册地址改变事件   
346.             @Override   
347.             public void changed(LocationEvent e) {  
348.                 if(e.top){  
349.                     addUrlToCombo(e.location);  
350.                 }  
351.             }   
352.         });  
353.           
354.           
355.         News_Document doc = new News_Document();  
356.         new NewActionMenu(browser, doc, true);  //设置右键  
357.     }  
358.       
359.     class ButtonSelectionListener extends SelectionAdapter{  
360.         @Override  
361.         public void widgetSelected(SelectionEvent e) {  
362.             String operationName = ((Button)e.widget).getToolTipText();  
363.             Browser browser = (Browser)browserFolder.getSelection().getControl();  
364.             if(browser != null){  
365.                 if("后退".equals(operationName)){  
366.                     if(browser.isBackEnabled()){  
367.                         browser.back();  
368.                     }  
369.                 }else if("前进".equals(operationName)){  
370.                     if(browser.isForwardEnabled()){  
371.                         browser.forward();  
372.                     }  
373.                 }else if("刷新".equals(operationName)){  
374.                     browser.refresh();  
375.                 }else if("停止".equals(operationName)){  
376.                     browser.stop();  
377.                 }  
378.             }  
379.         }  
380.     }  
381. }