swt 高级控件介绍（1）

在前面的文章中我们了解SWT的一些基本控件，现在我为大家介绍几种同样常用但稍微复杂点的控件
1.tree:

Styles:

SINGLE（不能多选）, MULTI（可以多选）, CHECK（每个treeitem有复选框）, FULL_SELECTION（选中时，选中整行）, VIRTUAL（树是个虚拟的树，在得到用户、客户要求或者请求的时候才建立树的Item，而这些Item要设置有多少个子Item。有助于提升性能）, NO_SCROLL（没有滚动条，默认是自动的）

Events:

Selection（先择事件）, DefaultSelection（默认选择事件）, Collapse（收紧子节点）, Expand（展开子节点）, SetData（铺展时间，经常与tree.setItemCount(x)；连用）, MeasureItem（ 计算Item应该画多大，就是计算好了画多大后，在加上Image的宽度，这里要注意的是改变event.width的宽度就改变的项的宽度了。）, EraseItem（设置背景）, PaintItem（ 画上设置的图像），MouseDown（这个不说了- -！）

TreeColumn:

代表tree的一列

 

TreeItem:

代表tree的一行

cell：

确定某行某列的一个小单元 

 

	static Image getImage(Color c) {
	    Image image = new Image(Display.getCurrent(), 17, 17);
	    GC gc = new GC(image);
	    gc.setBackground(c);
	    gc.fillRectangle(3, 3, 10, 10);
	    gc.drawRectangle(3, 3,9,9);
	    gc.dispose();
	    return image;
	}
	public static void main(String[] args) {  
		Display display = new Display();  
		final Shell shell = new Shell(display);
		final Image image=getImage(display.getSystemColor(SWT.COLOR_BLUE));
		TreeColumnLayout layout=new TreeColumnLayout();
		shell.setLayout (layout);
		
		final Tree tree = new Tree(shell, SWT.VIRTUAL | SWT.BORDER|SWT.FULL_SELECTION);
		TreeColumn nameColumn=new TreeColumn(tree,SWT.NONE);
		nameColumn.setText("Name");
		layout.setColumnData(nameColumn,new ColumnWeightData(50, 150));
		TreeColumn valueColumn=new TreeColumn(tree,SWT.NONE);
		valueColumn.setText("Value");
		layout.setColumnData(valueColumn,new ColumnWeightData(50, 150));
		final TreeEditor editor= new TreeEditor(tree);
		editor.horizontalAlignment = SWT.LEFT;  
		editor.grabHorizontal = true; 
		// 生成节点的总是  
		tree.addMouseListener(new MouseListener() {
			
			@Override
			public void mouseUp(MouseEvent e) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void mouseDown(MouseEvent e) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void mouseDoubleClick(MouseEvent e) {
				// TODO Auto-generated method stub
				Control c = editor.getEditor();  
			    if (c != null) {  
			    	c.dispose();  
			    }
			    Point point = new Point(e.x, e.y);    
			    final TreeItem treeItem = tree.getItem(point);  
			    if(treeItem!=null){
			    	int column = -1;  
			    		for (int i = 0; i < tree.getColumnCount(); i++) {  
			    			Rectangle rec = treeItem.getBounds(i);  
			    			if (rec.contains(point))  
			    				column = i;  
			    		}  
				    final Text txt=new Text(tree,SWT.NONE);  
				    txt.setText(treeItem.getText(column));  
				    txt.forceFocus();  
				    editor.setEditor(txt, treeItem,column);
			
				    System.out.println(txt.getBounds());
				    
				    txt.addListener(SWT.FocusOut, new Listener() {
						
						@Override
						public void handleEvent(Event event) {
							// TODO Auto-generated method stub
							treeItem.setText(txt.getText());
							txt.dispose();
						}
					});
			    }
			}
		});
		final int[] iArr = new int[1]; 
		tree.addListener(SWT.MeasureItem,new Listener(){

			@Override
			public void handleEvent(Event event) {
				// TODO Auto-generated method stub
				TreeItem item=(TreeItem) event.item;
				//for(int i=0;i

 效果图：

2.table:

table就是一个没有父子的关系的tree

Styles：

和tree一致

Events:

除了 Collapse, Expand没有其他都有

TableColumn：

代表table的一列

TableItem：

代表table的一行

确定某行某列的一个小单元 

 

public static void main(String[] args) {  
   new TestTable();  
}  
private TestTable() {  
   Display display = new Display();  
   Shell shell = new Shell(display);  
   shell.setLayout(new FillLayout());  
   shell.setText("tableС¹¤³Ì");  
   createTable(shell);  
   shell.pack();  
   shell.open();  
   while (!shell.isDisposed()) {  
    if (!display.readAndDispatch())  
     display.sleep();  
   }  
   display.dispose();  
}  
/** 
* ´´½¨±í¸ñ 
*  
* @param shell 
*/  
private void createTable(final Shell shell) {  
   table = new Table(shell, SWT.MULTI | SWT.FULL_SELECTION);  
   editor = new TableEditor(table);  
   editor.horizontalAlignment = SWT.LEFT;  
  editor.grabHorizontal = true;  
   table.setHeaderVisible(true);  
   table.setLinesVisible(true);
   final TableColumn col1 = new TableColumn(table, SWT.NONE);
   col1.addSelectionListener(new SelectionListener() {
	
	@Override
	public void widgetSelected(SelectionEvent e) {
		// TODO Auto-generated method stub
		final Text txt=new Text(table,SWT.NONE);  
	       txt.setText(col1.getText());  
				txt.forceFocus();  
			txt.setBounds(new Rectangle(10, 10, col1.getWidth(), table.getHeaderHeight()));
			System.out.println(txt.getBounds());
	      txt.addModifyListener(new ModifyListener() {  
	       
	        @Override  
	        public void modifyText(ModifyEvent e) {  
	          
	        }  
	       });  
	}
	
	@Override
	public void widgetDefaultSelected(SelectionEvent e) {
		// TODO Auto-generated method stub
		
	}
});
   col1.setMoveable(true);
  col1.setText("ÐÕÃû");  
   col1.setWidth(100);  
   TableColumn col2 = new TableColumn(table, SWT.LEFT);  
   col2.setText("ÄêÁä");  
   col2.setWidth(100);  
   TableColumn col5 = new TableColumn(table, SWT.LEFT);  
   col5.setText("ÐÔ±ð");  
   col5.setWidth(100);  
  TableColumn col3 = new TableColumn(table, SWT.LEFT);  
   col3.setText("µØÖ·");  
   col3.setWidth(100);  
   TableColumn col4 = new TableColumn(table, SWT.LEFT);  
   col4.setText("µç»°");  
   col4.setWidth(100);  
   /** 
   * Ìí¼Ó±í¸ñÊý¾Ý 
   */  
   new TableItem(table, SWT.LEFT).setText(new String[] { "ÕÅÈý", "22", "ÄÐ",  
     "ÖØÇìÊÐ", "13022332356" });  
   new TableItem(table, SWT.LEFT).setText(new String[] { "СÇÅ", "22", "Å®",  
     "ÉϺ£ÊÐ", "13029872222" });  
   new TableItem(table, SWT.LEFT).setText(new String[] { "С¿É", "22", "ÄÐ",  
     "±±¾©ÊÐ", "13006800123" });  
   new TableItem(table, SWT.LEFT).setText(new String[] { "ÍõÎå", "31", "ÄÐ",  
    "Î人ÊÐ", "13098982201" });  
  new TableItem(table, SWT.LEFT).setText(new String[] { "ÌìÆô", "29", "ÄÐ",  
    "ÄÏÄþÊÐ", "13024374001" });  
   new TableItem(table, SWT.LEFT).setText(new String[] { "¸ßÀÖ", "25", "Å®",  
     "Ìì½òÊÐ", "13088888888" });  
   // ɾ³ý²Ëµ¥  
   Menu menu1 = new Menu(shell, SWT.POP_UP);  
   table.setMenu(menu1);  
   MenuItem menuitem1 = new MenuItem(menu1, SWT.PUSH);  
   menuitem1.setText("ɾ³ý");  
   menuitem1.addListener(SWT.Selection, new Listener() {  
   @Override  
    public void handleEvent(Event event) {  
     MessageBox mbox = new MessageBox(shell, SWT.DIALOG_TRIM|SWT.ICON_INFORMATION);  
     mbox.setText("ɾ³ý³É¹¦");  
     mbox.setMessage("ɾ³ýÁË" + table.getSelectionCount() + "Ìõ¼Ç¼");  
     table.remove(table.getSelectionIndices());  
     mbox.open();  
   }  
   });  
   // ÐÞ¸Ätable  
   {  
   table.addMouseListener(new MouseAdapter() {  
     @Override  
     public void mouseDoubleClick(MouseEvent e) {  
     Control c = editor.getEditor();  
      if (c != null) {  
       c.dispose();  
      }  
     // µÃµ½Ñ¡ÖеÄÐÐ  
     Point point = new Point(e.x, e.y);  
      // MessageDialog.openInformation(shell, null,  
      // point.x+","+point.y);  
     final TableItem tableitem = table.getItem(point);  
      // µÃµ½Ñ¡ÖеÄÁÐ  
     int column = -1;  
      for (int i = 0; i < table.getColumnCount(); i++) {  
       Rectangle rec = tableitem.getBounds(i);  
       if (rec.contains(point))  
        column = i;  
     }  
      final int col1 = column;  
       
      //ÐÞ¸ÄÄêÁ䣬½øÐÐ΢µ÷  
      if(col1==1){  
       final Spinner spiner=new Spinner(table,SWT.NONE);  
       spiner.setMaximum(120);  
       spiner.setMinimum(1);  
       spiner.setSelection(new Integer(tableitem.getText(1)));  
       editor.setEditor(spiner, tableitem, col1);  
       spiner.addModifyListener(new ModifyListener() {  
         
        @Override  
        public void modifyText(ModifyEvent e) {  
         tableitem.setText(col1,String.valueOf(spiner.getSelection()));  
        }  
       });  
      }else if (col1 == 2) {  
       //ÐÞ¸ÄÐÔ±ðÓÃÏÂÀ­ÁÐ±í  
       final Combo comb = new Combo(table, SWT.READ_ONLY);  
       comb.setItems(new String[] { "ÄÐ", "Å®", "δ֪" });  
      comb.addSelectionListener(new SelectionAdapter() {  
        @Override  
       public void widgetSelected(SelectionEvent e) {  
         tableitem.setText(col1, comb.getText());  
         comb.dispose();  
         super.widgetSelected(e);  
        }  
       });  
       editor.setEditor(comb, tableitem, column);  
      }else{  
       //ÆäËûµÄÐ޸Ķ¼ÊÇÓÃÎı¾¿ò  
       final Text txt=new Text(table,SWT.NONE);  
       txt.setText(tableitem.getText(col1));  
			txt.forceFocus();  
       editor.setEditor(txt, tableitem, col1);  
       System.out.println(txt.getBounds());
      txt.addModifyListener(new ModifyListener() {  
       
        @Override  
        public void modifyText(ModifyEvent e) {  
         tableitem.setText(col1, txt.getText());  
        }  
       });  
      }  
     }  
    });  
   }  
}  

 效果图：

（由于早前刚换windows10系统， 代码是我以前系统的学习例子，也许是没相关字体，所以中文都变成了乱码，对不起大家）

 

3.TabFolder和CTabFolder:

TabFolder（选项卡）是一个进行功能划分的控件，CTabFolder则是他的高级版

TabFolder Styles：TOP(将选项卡放在顶部) BOTTOM（将选项卡放在底部）

CTabFolder Styles:TOP（将选项卡放在顶部） BOTTOM（将选项卡放在底部） FLAT（为选项卡提供一个扁平的外观） BORDER（在控件周围现实边框） CLOSE（允许选项卡关闭）

TabFolder Events:selection，其他都是control 默认能触发的event

CTabFolder Events：selection，CTabFolder2Listener，其他也都是Control 默认能出发的event

TabItem ：TabFolder的一个选项。

CTabItem ：CTabFolder的一个选项。

下面我们着重看下CTabFolder2Listener下面有哪些方法：

（1）close 关掉一个CTabItem时触发，（假如在关掉当前这个item时，剩下还有item，CTabFolder默认会选中当前要关闭的item的后面一个，所以此回调基本都会出发selectionchange）。

（2）minimize:用了最小化按钮后触发

（3）maximize：用了最大化按钮后触发

（4）restore ：用了恢复按钮后触发

（5）showList：在item太多，不够显示的时候，item的最右边会显示咯下拉箭头，showList就是在点了这个按钮后触发。

 

CTabFolder简单列子

Display display = new Display();
		    final Shell shell = new Shell(display);
		    shell.setLayout(new FillLayout());
		    final TabFolder tabFolder = new TabFolder(shell, SWT.BORDER|SWT.BOTTOM);
		    for (int i = 0; i < 6; i++) {
		      TabItem item = new TabItem(tabFolder, SWT.NONE);
		      item.setText("TabItem " + i);
		      Button button = new Button(tabFolder, SWT.PUSH);
		      button.setText("Page " + i);
		      item.setControl(button);
		    }
		    shell.pack();
		    shell.open();
		    while (!shell.isDisposed()) {
		      if (!display.readAndDispatch())
		        display.sleep();
		    }
		    display.dispose();

 

效果图：

 

CTabFolder简单例子：

import java.util.ArrayList;

import org.eclipse.jface.dialogs.PopupDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.viewers.StyledCellLabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabFolder2Listener;
import org.eclipse.swt.custom.CTabFolderEvent;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
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.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Widget;

public class TestCTabFolder {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Display display = new Display();
	    final Shell shell = new Shell(display);
	    shell.setLayout(new FillLayout());
	    final CTabFolder tabFolder = new CTabFolder(shell, SWT.BORDER|SWT.BOTTOM|SWT.FLAT);
	    for (int i = 0; i < 20; i++) {
	      CTabItem item = new CTabItem(tabFolder, SWT.Close);
	      item.setText("CTabItem " + i);
	      Button button = new Button(tabFolder, SWT.PUSH);
	      button.setText("Page " + i);
	      item.setControl(button);
	    }
	    tabFolder.addCTabFolder2Listener(new CTabFolder2Listener() {
			
			@Override
			public void showList(CTabFolderEvent event) {
				// TODO Auto-generated method stub
				int x = event.x;
				int y = event.y +event.height;
				Point location = tabFolder.getDisplay().map(tabFolder, null, x, y);
				TestPopupDialog dialog=new TestPopupDialog(tabFolder.getShell(), tabFolder, location.x, location.y);
				dialog.open();
				event.doit=false;
			}
			
			@Override
			public void restore(CTabFolderEvent event) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void minimize(CTabFolderEvent event) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void maximize(CTabFolderEvent event) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void close(CTabFolderEvent event) {
				// TODO Auto-generated method stub
				
			}
		});
	    shell.setSize(400, 300);
	    shell.open();
	    while (!shell.isDisposed()) {
	      if (!display.readAndDispatch())
	        display.sleep();
	    }
	    display.dispose();
	}
	static public class TestPopupDialog extends PopupDialog {
		Text text;
		CTabFolder tabFolder;
		Font boldF;
		int x;
		int y;
		TableViewer tableViewer;
		ActionContentProvider actionContentProvider;
		public TestPopupDialog(Shell parent,CTabFolder tabFolder,int x,int y){
			  super(parent, SWT.NO_TRIM, true, false, false, false, false, null,
	                  null);
			  this.tabFolder=tabFolder;
			  this.x=x;
			  this.y=y;
		}

		@Override
		protected Control createDialogArea(Composite parent) {
			// TODO Auto-generated method stub
			final Composite composite = (Composite) super.createDialogArea(parent);
			 text=new Text(composite,SWT.NONE);
	         GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true,
	  				false).applyTo(text);
	        Label comseparator = new Label(composite, SWT.SEPARATOR | SWT.HORIZONTAL);
	      	GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true,
	 				false).applyTo(comseparator);
	      	tableViewer=new TableViewer(composite,SWT.SINGLE|SWT.FULL_SELECTION);
	      	int itemH=tableViewer.getTable().getItemHeight();
	    	GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).hint(-1,itemH*15).grab(true,
	 				false).applyTo(tableViewer.getTable());
//	    	TableColumn col=new TableColumn(tableViewer.getTable(), SWT.NONE);
//	    	col.setText("djh");
	    	FontData fd= Display.getCurrent().getSystemFont().getFontData()[0];
	    	fd.setStyle(SWT.BOLD);;
	    	boldF=new Font(null,fd);
	    	actionContentProvider=new ActionContentProvider("");
	    	tableViewer.setContentProvider(actionContentProvider);
	    	tableViewer.setLabelProvider(new ActionLabelProvider());
	    	tableViewer.setInput(tabFolder);
	    	tableViewer.setSelection(new StructuredSelection(tabFolder.getSelection()));
	    	tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
				
				@Override
				public void selectionChanged(SelectionChangedEvent event) {
					// TODO Auto-generated method stub
					ISelection selection=event.getSelection();
					if(selection!=null&&!selection.isEmpty()){
						StructuredSelection ss=(StructuredSelection) selection;
						tabFolder.setMRUVisible(false);
						tabFolder.setSelection((CTabItem) ss.getFirstElement());
						Listener[] listeners=tabFolder.getListeners(SWT.Selection);
						for(Listener l:listeners){
							Event e=new Event();
							e.item=(Widget) ss.getFirstElement();
							e.type=SWT.Selection;
							e.widget=tabFolder;
							l.handleEvent(e);
							//e.widget=tabFolder;
						}
						close();
					}
					
				}
			});
	    	text.addModifyListener(new ModifyListener() {
				
				@Override
				public void modifyText(ModifyEvent e) {
					// TODO Auto-generated method stub
					actionContentProvider.setText(text.getText());
					tableViewer.refresh();
					
				}
			});
			return composite;
		}
		class ActionContentProvider implements IStructuredContentProvider{
			String text;
			ActionContentProvider(String text){
				this.text=text;
			}
			public void setText(String text) {
				this.text = text;
			}
			@Override
			public void dispose() {
				// TODO Auto-generated method stub
				
			}

			@Override
			public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
				// TODO Auto-generated method stub
				
			}

			@Override
			public Object[] getElements(Object inputElement) {
				// TODO Auto-generated method stub
				if(inputElement instanceof CTabFolder){
					CTabFolder tabFolder=(CTabFolder) inputElement;
					ArrayList items=new ArrayList();
					if(text.equals("")){
						return tabFolder.getItems();
					}
					for(CTabItem item:tabFolder.getItems()){
						if(item.getText().startsWith(text)){
							items.add(item);
						}
					}
					return items.toArray(new CTabItem[]{});
				}
				return new Object[]{};
			}
			
		}
		class ActionLabelProvider extends StyledCellLabelProvider{

			@Override
			public void update(ViewerCell cell) {
				// TODO Auto-generated method stub
				CTabItem tabItem=(CTabItem) cell.getElement();
				//CTabFolder tabFolder=tabItem.getParent();
				if(cell.getColumnIndex()==0){
					if(tabItem.isShowing()){
					}else{
						cell.setFont(boldF);
					}
					cell.setText(tabItem.getText());
				}
				super.update(cell);
			}
			
		}
		@Override
		protected void adjustBounds() {
			// TODO Auto-generated method stub
//			Point size=getShell().getSize();
//			if(size.y>600){
//				getShell().setSize(size.x, 600);
//			}
			getShell().setLocation(x, y);
		}

		@Override
		public boolean close() {
			// TODO Auto-generated method stub
			//return false;
			boolean flag= super.close();
			if(flag){
				boldF.dispose();
			}
			return flag;
		}
		
	}
}

 效果图：

谢谢大家