自定义SWT控件一之自定义单选下拉框
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一、自定义下拉控件
自定义的下拉框，是自定义样式的，其中的下拉框使用的是独立的window，非复选框的下拉框双击单机其它区域或选择完之后，独立window构成的下拉框会自动消失。
package com.view.control.select;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import com.util.CollectionUtil;
import com.view.control.DefinedControl;
import com.view.swt.SWTResourceManager;
import com.view.swt.SWTUtil;
/**
* <p>下拉框抽象类。该类主要实现了下拉框的绘制</p>
* @version V1.0
*/
public abstract class DropDownBox<T> extends DefinedControl {
protected Composite comboConenetComposite;
/*****下拉框中的数据构成****/
protected List<T> comboDataList;
/*****下拉框每一行的高*******/
protected int comboRowHeight = 32;
/*****下拉框每一行的宽******/
protected int comboRowWidth = -1;
protected List<Listener> selectListener;
/******下拉控件的兄弟控件(绘制下拉框时，该控件必须存在)********/
protected Composite contentComposite;
/*****下拉框(gridLayout布局)******/
protected Shell comboComposite;
protected boolean showValue;
/****
* <p>Combo数据对象</p>
* @version V1.0
*/
public static class Data{
private String display;
private String value;
private int nickname;
public Data(){
}
public Data(String display,String value){
this.display = display;
this.value = value;
}
public String getDisplay() {
return display;
}
public void setDisplay(String display) {
this.display = display;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public int getNickname() {
return nickname;
}
public void setNickname(int nickname) {
this.nickname = nickname;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + nickname;
result = prime * result + ((value == null)?0:value.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Data other = (Data)obj;
if (nickname != other.nickname)
return false;
if (value == null) {
if (other.value != null)
return false;
} else if (!value.equals(other.value))
return false;
return true;
}
}
public DropDownBox(Composite parent,List<T> comboDataList,int comboRowWidth) {
super(parent);
this.comboDataList = comboDataList;
this.comboRowWidth = comboRowWidth;
}
@Override
public void paint() {
generateComboComposite();
}
protected void comboPaint(){
generateComboComposite();
}
/**
* 生成下拉框
*/
private void generateComboComposite(){
comboComposite = new Shell(this.contentComposite.getShell(),SWT.NO_TRIM);
comboComposite.setBackground(SWTResourceManager.getWhiteColor());
SWTUtil.paintBorder(comboComposite, SWTResourceManager.getDarkColor());
GridLayout gl = new GridLayout();
gl.marginBottom = 2;
gl.marginTop = 2;
gl.marginRight = 2;
gl.marginLeft = 2;
gl.marginWidth = 0;
gl.marginHeight = 0;
comboComposite.setLayout(gl);
comboComposite.addShellListener(new ShellAdapter() {
public void shellDeactivated(ShellEvent arg0) {
if (comboComposite != null && !comboComposite.isDisposed()) {
comboComposite.dispose();
}
}
});
reLocation();
coverComboComposite();
comboComposite.open();
}
protected void comboDispose(){
if(!comboComposite.isDisposed()){
comboComposite.dispose();
}
}
/**
* 重新定位下拉框显示坐标
*/
public void reLocation(){
if(comboComposite != null && !comboComposite.isDisposed()){
if(null != contentComposite && !contentComposite.isDisposed()){
Point p = contentComposite.getParent().toDisplay(contentComposite.getLocation());
Point size = contentComposite.getSize();
Rectangle shellRect = new Rectangle(p.x, p.y + size.y+5, size.x, 0);
comboComposite.setLocation(shellRect.x,shellRect.y);
}else{
comboComposite.setLocation(0, 0);
}
}
}
/**
* 可覆盖下拉框
*/
protected void coverComboComposite(){
comboComposite.setSize(this.comboRowWidth+2, 180);
ScrolledComposite scrolledComposite = new ScrolledComposite(comboComposite,SWT.V_SCROLL);
GridData gd_scrolledComposite = new GridData(SWT.FILL,SWT.FILL,true,true,1,1);
scrolledComposite.setLayoutData(gd_scrolledComposite);
scrolledComposite.setExpandHorizontal(true);
scrolledComposite.setExpandVertical(true);
comboConenetComposite = new Composite(scrolledComposite,SWT.NONE);
GridLayout gl_comboComposite = new GridLayout(1,true);
gl_comboComposite.horizontalSpacing = 0;
gl_comboComposite.verticalSpacing = 0;
gl_comboComposite.marginHeight = 1;
gl_comboComposite.marginWidth = 1;
comboConenetComposite.setLayout(gl_comboComposite);
comboConenetComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE));
scrolledComposite.setContent(comboConenetComposite);
if(CollectionUtil.isNotEmpty(this.comboDataList)){
if(this.comboDataList.size()<=8){
comboComposite.setSize(this.comboRowWidth+2, this.comboRowHeight * this.comboDataList.size()+10);
}
for(T data:this.comboDataList){
generateComboItem(data);
}
}else{
comboComposite.setSize(this.comboRowWidth, this.comboRowHeight);
}
comboConenetComposite.layout(true);
scrolledComposite.setMinSize(comboConenetComposite.computeSize(SWT.DEFAULT, SWT.DEFAULT));
}
/**
* 创建一个item
* @param display
* @param value
* @param index
*/
protected void generateComboItem(T data){
Composite itemComposite = new Composite(comboConenetComposite,SWT.NONE);
itemComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE));
GridData gd_itemComposite = new GridData(SWT.FILL,SWT.FILL,false,false,1,1);
gd_itemComposite.heightHint = this.comboRowHeight;
gd_itemComposite.widthHint = this.comboRowWidth-20;
itemComposite.setLayoutData(gd_itemComposite);
generateComboItemComposite(data,itemComposite);
itemComposite.setData("data", data);
}
public void addSelectListener(Listener selectListener) {
if(this.selectListener == null){
this.selectListener = new ArrayList<Listener>();
}
this.selectListener.add(selectListener);
}
protected List<Listener> getSelectListener() {
return selectListener;
}
/**
* 生成一行
* @param data
* @param itemComposite
*/
protected abstract void generateComboItemComposite(T data,Composite itemComposite);
public int getComboRowHeight() {
return comboRowHeight;
}
public void setComboRowHeight(int comboRowHeight) {
this.comboRowHeight = comboRowHeight;
}
public int getComboRowWidth() {
return comboRowWidth;
}
public void setComboRowWidth(int comboRowWidth) {
this.comboRowWidth = comboRowWidth;
}
public Composite getComboComposite() {
return comboComposite;
}
public List<T> getComboDataList() {
return comboDataList;
}
public void addData(T data){
this.comboDataList.add(data);
}
public void removeData(Data data){
this.comboDataList.remove(data);
}
public void setComboDataList(List<T> comboDataList) {
this.comboDataList = comboDataList;
}
public boolean isShowValue() {
return showValue;
}
public void setShowValue(boolean showValue) {
this.showValue = showValue;
}
public void dispose(){
if(comboComposite!= null && !comboComposite.isDisposed()){
comboComposite.dispose();
}
}
public void setContentComposite(Composite contentComposite) {
this.contentComposite = contentComposite;
}
public Composite getContentComposite() {
return contentComposite;
}
}
DropDownBox.java 是所有下拉框（单选下拉框、复选下拉框）的基础类。
package com.view.control; import java.util.ArrayList; import java.util.HashMap; import java.util.Set; import org.apache.commons.collections.map.MultiValueMap; import org.apache.commons.lang3.StringUtils; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import com.util.CollectionUtil; import com.util.StringUtil; import com.view.control.valid.DefinedValidListener; import com.view.control.valid.IValid; import com.view.control.valid.RequiredValid; import com.view.swt.SWTResourceManager; import com.view.swt.SWTUtil; public abstract class DefinedFormControl extends DefinedControl { protected boolean require; /****提示信息********/ protected Label mention; /*****校验结果,值为true，表示校验通过****/ protected boolean validResult = true; /*****默认提示，主要显示error区域*****/ protected String defaultMention; protected MultiValueMap validlisteners = MultiValueMap.decorate(new HashMap<Integer,IValid>()); protected Composite validControl; protected int mentionWidth = 0; public DefinedFormControl(Composite parent) { super(parent); } public boolean notifyValid(){ if(!require && CollectionUtil.isEmpty(validlisteners)){ return true; } notifyRequired(getValue()); if(validResult && CollectionUtil.isNotMultiEmpty(validlisteners)){ @SuppressWarnings("unchecked") Set<Integer> keySet = validlisteners.keySet(); Event event = new Event(); event.widget = validControl; MultiValueMap excludeListener = MultiValueMap.decorate(new HashMap<Integer,Listener>(), ArrayList.class); for(Integer key:keySet){ if(CollectionUtil.isNotEmpty(validlisteners.getCollection(key))){ if(validResult){ Listener[] listeners = validControl.getListeners(key); for(Listener listener:listeners){ if(!(listener instanceof DefinedValidListener)){ excludeListener.put(key, listener); validControl.removeListener(key, listener); } } validControl.notifyListeners(key, event); } } } if(CollectionUtil.isNotEmpty(excludeListener)){ for(Object key:excludeListener.keySet()){ for(Object listener:excludeListener.getCollection(key)){ validControl.addListener((Integer)key, (Listener)listener); } } } } if(validResult){ } return validResult; } public abstract String getValue(); public abstract Composite getMentionComposite(); protected void notifyRequired(String value){ if(require && validResult){ RequiredValid valid = new RequiredValid(); String message = valid.valid(value); if(StringUtil.isNotNullAndEmpty(message)){ showErrorMention(message,getMentionComposite()); }else{ showNormalMention(getMentionComposite()); } } } /** * 显示错误信息 * @author wangfang5 2018年1月6日 下午9:23:38 * @param errorText */ protected void showErrorMention(String errorText,Composite contentComposite){ if(contentComposite != null) { SWTUtil.changeBorderToRed(contentComposite); } mention.setText(errorText); mention.setForeground(SWTResourceManager.getColor(SWT.COLOR_RED)); mention.getParent().layout(true); validResult = false; } /** * 显示默认提示 * @author wangfang5 2018年1月9日 下午2:27:16 */ protected void showNormalMention(Composite contentComposite){ if(contentComposite != null) { SWTUtil.changeBorderToNormal(contentComposite); } if(StringUtil.isNotNullAndEmpty(defaultMention)){ mention.setForeground(SWTResourceManager.getColor(200,200,200)); mention.setText(defaultMention); }else{ mention.setText(StringUtils.EMPTY); } mention.getParent().layout(true); validResult = true; } public void setRequire(boolean require) { this.require = require; } public void setDefaultMention(String defaultMention) { this.defaultMention = defaultMention; } public void setMentionWidth(int mentionWidth) { this.mentionWidth = mentionWidth; } }
DefinedFormControl.java 抽象表单控件
package com.view.util; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.util.HashMap; import java.util.Map; import org.apache.batik.transcoder.TranscoderException; import org.eclipse.swt.SWT; import org.eclipse.swt.SWTException; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.ImageData; import org.eclipse.swt.graphics.ImageLoader; import org.eclipse.swt.widgets.Display; public class ImageUtil { public static Image getImage(String filePath) { ImageLoader loader = new ImageLoader(); ImageData[] imageData = null; if(filePath.endsWith("svg") || filePath.endsWith("SVG")){ imageData = getImageSvg(filePath, loader); }else{ try { imageData = loader.load(filePath); } catch (SWTException e) { return null; } } Image newImage = null; if (imageData.length > 0) { newImage = new Image(null, imageData[0]); } return newImage; } public static ImageData[] getImageDatas(String filePath) { ImageLoader loader = new ImageLoader(); ImageData[] imageData = null; if(filePath.endsWith("svg") || filePath.endsWith("SVG")){ imageData = getImageSvg(filePath, loader); }else{ try { imageData = loader.load(filePath); } catch (SWTException e) { return null; } } return imageData; } private static ImageData[] getImageSvg(String filePath, ImageLoader loader) { ImageData[] imageData; String path = filePath.substring(0, filePath.lastIndexOf(".")) + ".png"; File file = new File(path); Map<String, String> map = new HashMap<String, String>(); FileOutputStream outputStream = null; try { file.createNewFile(); outputStream = new FileOutputStream(file); } catch (IOException e1) { } try { SvgPngConverter.convertToPngByFile(filePath, outputStream, map); } catch (TranscoderException | IOException e1) { } imageData = loader.load(path); file.delete(); return imageData; } public static Image getImage(InputStream imageInputStream) { ImageLoader loader = new ImageLoader(); ImageData[] imageData = loader.load(imageInputStream); Image newImage = null; if (imageData.length > 0) { newImage = new Image(null, imageData[0]); } return newImage; } public static Image getImage(String filePath, int width, int height) { Image scaled = new Image(Display.getDefault(), width, height); Image src = getImage(filePath); if (src == null) { return null; } GC gc = new GC(scaled); try { gc.setAdvanced(true); // 打开高级绘图模式 gc.setAntialias(SWT.ON);// 设置消除锯齿 gc.setInterpolation(SWT.HIGH); // 设置插值 gc.drawImage(src, 0, 0, src.getBounds().width, src.getBounds().height, 0, 0, width, height); } finally { gc.dispose(); } return scaled; } public static Image getImage(InputStream imageInputStream, int width, int height) { Image scaled = new Image(Display.getDefault(), width, height); Image src = getImage(imageInputStream); GC gc = new GC(scaled); try { gc.setAdvanced(true); // 打开高级绘图模式 gc.setAntialias(SWT.ON);// 设置消除锯齿 gc.setInterpolation(SWT.HIGH); // 设置插值 gc.drawImage(src, 0, 0, src.getBounds().width, src.getBounds().height, 0, 0, width, height); } finally { gc.dispose(); } return scaled; } }
ImageUtil.java 图像相关工具类
/******************************************************************************* * Copyright (c) 2011 Google, Inc. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Google, Inc. - initial API and implementation *******************************************************************************/ package com.view.swt; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.HashMap; import java.util.Map; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Cursor; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.ImageData; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.widgets.Display; /** * Utility class for managing OS resources associated with SWT controls such as colors, fonts, images, etc. * <p> * !!! IMPORTANT !!! Application code must explicitly invoke the <code>dispose()</code> method to release the * operating system resources managed by cached objects when those objects and OS resources are no longer * needed (e.g. on application shutdown) * <p> * This class may be freely distributed as part of any application or plugin. * <p> * @author scheglov_ke * @author Dan Rubel */ public class SWTResourceManager { //////////////////////////////////////////////////////////////////////////// // // Color // //////////////////////////////////////////////////////////////////////////// private static Map<RGB, Color> m_colorMap = new HashMap<RGB, Color>(); /** * Returns the system {@link Color} matching the specific ID. * * @param systemColorID * the ID value for the color * @return the system {@link Color} matching the specific ID */ public static Color getColor(int systemColorID) { Display display = Display.getCurrent(); return display.getSystemColor(systemColorID); } /** * 获取border边框颜色 * @author wangfang5 2017年10月21日 下午1:32:01 * @return */ public static Color getBorderColor(){ return getColor(new RGB(199,199,199)); } /** * 获取浅灰色border边框颜色 * @author wangfang5 2018年5月22日 下午2:26:08 * @return */ public static Color getLightGreyBorderColor(){ return getColor(new RGB(229,229,229)); } /** * 获取较深的边框颜色 * @author wangfang5 2018年1月27日 下午2:35:39 * @return */ public static Color getDarkColor(){ return getColor(new RGB(199,199,199)); } /** * 默认的字体颜色 * @author wangfang5 2018年1月29日 下午5:42:26 * @return */ public static Color getTextColor(){ return getColor(new RGB(51,51,51)); } /** * 获取白 * @author wangfang5 2018年1月29日 下午6:49:36 * @return */ public static Color getWhiteColor(){ return getColor(new RGB(255,255,255)); } /** * 获取控件边框颜色 * @author wangfang5 2018年1月12日 下午12:01:12 * @return */ public static Color getControlBorderColor(){ return getColor(new RGB(204,204,204)); } /** * Returns a {@link Color} given its red, green and blue component values. * * @param r * the red component of the color * @param g * the green component of the color * @param b * the blue component of the color * @return the {@link Color} matching the given red, green and blue component values */ public static Color getColor(int r, int g, int b) { return getColor(new RGB(r, g, b)); } /** * Returns a {@link Color} given its RGB value. * * @param rgb * the {@link RGB} value of the color * @return the {@link Color} matching the RGB value */ public static Color getColor(RGB rgb) { Color color = m_colorMap.get(rgb); if (color == null) { Display display = Display.getCurrent(); color = new Color(display, rgb); m_colorMap.put(rgb, color); } return color; } /** * Dispose of all the cached {@link Color}‘s. */ public static void disposeColors() { for (Color color : m_colorMap.values()) { color.dispose(); } m_colorMap.clear(); } //////////////////////////////////////////////////////////////////////////// // // Image // //////////////////////////////////////////////////////////////////////////// /** * Maps image paths to images. */ private static Map<String, Image> m_imageMap = new HashMap<String, Image>(); /** * Returns an {@link Image} encoded by the specified {@link InputStream}. * * @param stream * the {@link InputStream} encoding the image data * @return the {@link Image} encoded by the specified input stream */ protected static Image getImage(InputStream stream) throws IOException { try { Display display = Display.getCurrent(); ImageData data = new ImageData(stream); if (data.transparentPixel > 0) { return new Image(display, data, data.getTransparencyMask()); } return new Image(display, data); } finally { stream.close(); } } /** * Returns an {@link Image} stored in the file at the specified path. * * @param path * the path to the image file * @return the {@link Image} stored in the file at the specified path */ public static Image getImage(String path) { Image image = m_imageMap.get(path); if (image == null) { try { image = getImage(new FileInputStream(path)); m_imageMap.put(path, image); } catch (Exception e) { image = getMissingImage(); m_imageMap.put(path, image); } } return image; } /** * Returns an {@link Image} stored in the file at the specified path relative to the specified class. * * @param clazz * the {@link Class} relative to which to find the image * @param path * the path to the image file, if starts with <code>‘/‘</code> * @return the {@link Image} stored in the file at the specified path */ public static Image getImage(Class<?> clazz, String path) { String key = clazz.getName() + ‘|‘ + path; Image image = m_imageMap.get(key); if (image == null) { try { image = getImage(clazz.getResourceAsStream(path)); m_imageMap.put(key, image); } catch (Exception e) { image = getMissingImage(); m_imageMap.put(key, image); } } return image; } private static final int MISSING_IMAGE_SIZE = 10; /** * @return the small {@link Image} that can be used as placeholder for missing image. */ private static Image getMissingImage() { Image image = new Image(Display.getCurrent(), MISSING_IMAGE_SIZE, MISSING_IMAGE_SIZE); // GC gc = new GC(image); gc.setBackground(getColor(SWT.COLOR_RED)); gc.fillRectangle(0, 0, MISSING_IMAGE_SIZE, MISSING_IMAGE_SIZE); gc.dispose(); // return image; } /** * Style constant for placing decorator image in top left corner of base image. */ public static final int TOP_LEFT = 1; /** * Style constant for placing decorator image in top right corner of base image. */ public static final int TOP_RIGHT = 2; /** * Style constant for placing decorator image in bottom left corner of base image. */ public static final int BOTTOM_LEFT = 3; /** * Style constant for placing decorator image in bottom right corner of base image. */ public static final int BOTTOM_RIGHT = 4; /** * Internal value. */ protected static final int LAST_CORNER_KEY = 5; /** * Maps images to decorated images. */ @SuppressWarnings("unchecked") private static Map<Image, Map<Image, Image>>[] m_decoratedImageMap = new Map[LAST_CORNER_KEY]; /** * Returns an {@link Image} composed of a base image decorated by another image. * * @param baseImage * the base {@link Image} that should be decorated * @param decorator * the {@link Image} to decorate the base image * @return {@link Image} The resulting decorated image */ public static Image decorateImage(Image baseImage, Image decorator) { return decorateImage(baseImage, decorator, BOTTOM_RIGHT); } /** * Returns an {@link Image} composed of a base image decorated by another image. * * @param baseImage * the base {@link Image} that should be decorated * @param decorator * the {@link Image} to decorate the base image * @param corner * the corner to place decorator image * @return the resulting decorated {@link Image} */ public static Image decorateImage(final Image baseImage, final Image decorator, final int corner) { if (corner <= 0 || corner >= LAST_CORNER_KEY) { throw new IllegalArgumentException("Wrong decorate corner"); } Map<Image, Map<Image, Image>> cornerDecoratedImageMap = m_decoratedImageMap[corner]; if (cornerDecoratedImageMap == null) { cornerDecoratedImageMap = new HashMap<Image, Map<Image, Image>>(); m_decoratedImageMap[corner] = cornerDecoratedImageMap; } Map<Image, Image> decoratedMap = cornerDecoratedImageMap.get(baseImage); if (decoratedMap == null) { decoratedMap = new HashMap<Image, Image>(); cornerDecoratedImageMap.put(baseImage, decoratedMap); } // Image result = decoratedMap.get(decorator); if (result == null) { Rectangle bib = baseImage.getBounds(); Rectangle dib = decorator.getBounds(); // result = new Image(Display.getCurrent(), bib.width, bib.height); // GC gc = new GC(result); gc.drawImage(baseImage, 0, 0); if (corner == TOP_LEFT) { gc.drawImage(decorator, 0, 0); } else if (corner == TOP_RIGHT) { gc.drawImage(decorator, bib.width - dib.width, 0); } else if (corner == BOTTOM_LEFT) { gc.drawImage(decorator, 0, bib.height - dib.height); } else if (corner == BOTTOM_RIGHT) { gc.drawImage(decorator, bib.width - dib.width, bib.height - dib.height); } gc.dispose(); // decoratedMap.put(decorator, result); } return result; } /** * Dispose all of the cached {@link Image}‘s. */ public static void disposeImages() { // dispose loaded images { for (Image image : m_imageMap.values()) { image.dispose(); } m_imageMap.clear(); } // dispose decorated images for (int i = 0; i < m_decoratedImageMap.length; i++) { Map<Image, Map<Image, Image>> cornerDecoratedImageMap = m_decoratedImageMap[i]; if (cornerDecoratedImageMap != null) { for (Map<Image, Image> decoratedMap : cornerDecoratedImageMap.values()) { for (Image image : decoratedMap.values()) { image.dispose(); } decoratedMap.clear(); } cornerDecoratedImageMap.clear(); } } } //////////////////////////////////////////////////////////////////////////// // // Font // //////////////////////////////////////////////////////////////////////////// /** * Maps font names to fonts. */ private static Map<String, Font> m_fontMap = new HashMap<String, Font>(); /** * Maps fonts to their bold versions. */ private static Map<Font, Font> m_fontToBoldFontMap = new HashMap<Font, Font>(); /** * Returns a {@link Font} based on its name, height and style. * * @param name * the name of the font * @param height * the height of the font * @param style * the style of the font * @return {@link Font} The font matching the name, height and style */ public static Font getFont(String name, int height, int style) { return getFont(name, height, style, false, false); } /** * Returns a {@link Font} based on its name, height and style. Windows-specific strikeout and underline * flags are also supported. * * @param name * the name of the font * @param size * the size of the font * @param style * the style of the font * @param strikeout * the strikeout flag (warning: Windows only) * @param underline * the underline flag (warning: Windows only) * @return {@link Font} The font matching the name, height, style, strikeout and underline */ public static Font getFont(String name, int size, int style, boolean strikeout, boolean underline) { String fontName = name + ‘|‘ + size + ‘|‘ + style + ‘|‘ + strikeout + ‘|‘ + underline; Font font = m_fontMap.get(fontName); if (font == null) { FontData fontData = new FontData(name, size, style); if (strikeout || underline) { try { Class<?> logFontClass = Class.forName("org.eclipse.swt.internal.win32.LOGFONT"); //$NON-NLS-1$ Object logFont = FontData.class.getField("data").get(fontData); //$NON-NLS-1$ if (logFont != null && logFontClass != null) { if (strikeout) { logFontClass.getField("lfStrikeOut").set(logFont, Byte.valueOf((byte) 1)); //$NON-NLS-1$ } if (underline) { logFontClass.getField("lfUnderline").set(logFont, Byte.valueOf((byte) 1)); //$NON-NLS-1$ } } } catch (Throwable e) { System.err.println("Unable to set underline or strikeout" + " (probably on a non-Windows platform). " + e); //$NON-NLS-1$ //$NON-NLS-2$ } } font = new Font(Display.getCurrent(), fontData); m_fontMap.put(fontName, font); } return font; } /** * Returns a bold version of the given {@link Font}. * * @param baseFont * the {@link Font} for which a bold version is desired * @return the bold version of the given {@link Font} */ public static Font getBoldFont(Font baseFont) { Font font = m_fontToBoldFontMap.get(baseFont); if (font == null) { FontData fontDatas[] = baseFont.getFontData(); FontData data = fontDatas[0]; font = new Font(Display.getCurrent(), data.getName(), data.getHeight(), SWT.BOLD); m_fontToBoldFontMap.put(baseFont, font); } return font; } /** * Dispose all of the cached {@link Font}‘s. */ public static void disposeFonts() { // clear fonts for (Font font : m_fontMap.values()) { font.dispose(); } m_fontMap.clear(); // clear bold fonts for (Font font : m_fontToBoldFontMap.values()) { font.dispose(); } m_fontToBoldFontMap.clear(); } //////////////////////////////////////////////////////////////////////////// // // Cursor // //////////////////////////////////////////////////////////////////////////// /** * Maps IDs to cursors. */ private static Map<Integer, Cursor> m_idToCursorMap = new HashMap<Integer, Cursor>(); /** * Returns the system cursor matching the specific ID. * * @param id * int The ID value for the cursor * @return Cursor The system cursor matching the specific ID */ public static Cursor getCursor(int id) { Integer key = Integer.valueOf(id); Cursor cursor = m_idToCursorMap.get(key); if (cursor == null) { cursor = new Cursor(Display.getDefault(), id); m_idToCursorMap.put(key, cursor); } return cursor; } /** * Dispose all of the cached cursors. */ public static void disposeCursors() { for (Cursor cursor : m_idToCursorMap.values()) { cursor.dispose(); } m_idToCursorMap.clear(); } //////////////////////////////////////////////////////////////////////////// // // General // //////////////////////////////////////////////////////////////////////////// /** * Dispose of cached objects and their underlying OS resources. This should only be called when the cached * objects are no longer needed (e.g. on application shutdown). */ public static void dispose() { disposeColors(); disposeImages(); disposeFonts(); disposeCursors(); } }
1、自定义单选下拉框
package com.view.control.select; import org.apache.commons.lang3.StringUtils; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import com.util.CollectionUtil; import com.util.FileUtil; import com.view.control.DefinedControl; import com.view.control.select.DropDownBox.Data; import com.view.swt.SWTResourceManager; import com.view.swt.SWTUtil; import com.util.ImageUtil; /** * <p>不可编辑下拉框</p> * @version V1.0 */ public class DefinedCommonSingleSelect extends DefinedControl { /****内容框容器的宽度****/ private int comboWidth = 323; /****内容框容器的高度*****/ private int comboHeight = 32; /****内容框容器*****/ private CLabel contentText; private Label img; private DropDownBox.Data defaultValue; private boolean enable = true; private boolean showValue=false; private DropDownBox<DropDownBox.Data> dropDownBox; private DefinedCommonSingleSelectEvent dropdownBeforeEvent; private Composite contentComposite; public DefinedCommonSingleSelect(Composite parent, DropDownBox<DropDownBox.Data> dropDownBox) { super(parent); this.dropDownBox = dropDownBox; } public DefinedCommonSingleSelect(Composite parent,DropDownBox<DropDownBox.Data> dropDownBox,int comboWidth,int comboHeight) { this(parent,dropDownBox); this.comboWidth = comboWidth; this.comboHeight = comboHeight; } public DefinedCommonSingleSelect(Composite parent,DropDownBox<DropDownBox.Data> dropDownBox,int comboWidth,int comboHeight,boolean showValue) { this(parent,dropDownBox,comboWidth,comboHeight); this.showValue=showValue; } @Override public void paint() { contentText = generateComposite(this.parent); if(null != this.defaultValue){ if(showValue){ contentText.setText(defaultValue.getDisplay()+"_"+ defaultValue.getValue()); } else{ contentText.setText(defaultValue.getDisplay()); } contentText.setData("value", this.defaultValue.getValue()); contentText.setData("data", defaultValue); } this.parent.layout(true); } /** * 创建文本框控件 * @param parentComposite * @return */ private CLabel generateComposite(Composite parentComposite){ contentComposite = new Composite(parentComposite, SWT.NONE); GridData gd_contentComposite = new GridData(SWT.FILL,SWT.FILL,false,false,1,1); gd_contentComposite.widthHint = this.comboWidth; gd_contentComposite.heightHint = this.comboHeight; contentComposite.setLayoutData(gd_contentComposite); GridLayout grid = new GridLayout(2, false); grid.horizontalSpacing = 1; grid.verticalSpacing = 0; grid.marginHeight = 1; grid.marginWidth = 1; contentComposite.setLayout(grid); contentComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); SWTUtil.paintBorder(contentComposite, SWTResourceManager.getColor(229,229,229)); CLabel contentText = new CLabel(contentComposite,SWT.NONE); GridData gd_contentText = new GridData(SWT.FILL, SWT.CENTER, true, true, 1, 1); contentText.setLayoutData(gd_contentText); contentText.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); img = new Label(contentComposite, SWT.NONE); GridData gd_img = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1); gd_img.widthHint = 24; gd_img.heightHint = 24; img.setLayoutData(gd_img); img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream("images/h-icon-angle-minimum-down.png"))); img.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); img.setCursor(SWTResourceManager.getCursor(SWT.CURSOR_HAND)); img.addListener(SWT.MouseDown, new Listener(){ @Override public void handleEvent(Event event) { boolean addImgEvent = true; if(null != dropdownBeforeEvent){ addImgEvent = dropdownBeforeEvent.dropdownBeforeEvent();//展现下拉框之前的操作行为 } if(addImgEvent){ //绘制下拉框 Composite comboComposite = dropDownBox.getComboComposite(); if(comboComposite !=null && !comboComposite.isDisposed()){ dropDownBox.comboDispose(); }else{ dropDownBox.setContentComposite(contentComposite); dropDownBox.comboPaint(); } } } }); img.setEnabled(this.enable); contentComposite.layout(true); return contentText; } protected void generateComboItemComposite(Data data, Composite itemComposite) { GridLayout gl_itemComposite = new GridLayout(1,true); gl_itemComposite.verticalSpacing = 0; gl_itemComposite.horizontalSpacing = 0; gl_itemComposite.marginHeight = 0; gl_itemComposite.marginWidth = 10; itemComposite.setLayout(gl_itemComposite); CLabel itemLabel = new CLabel(itemComposite,SWT.NONE); itemLabel.setData("data",data); itemLabel.setAlignment(SWT.LEFT); GridData gd_itemLabel = new GridData(SWT.FILL,SWT.FILL,true,false,1,1); itemLabel.setLayoutData(gd_itemLabel); if(data != null){ if(showValue){ itemLabel.setText(data.getDisplay()+"_"+data.getValue()); } else{ itemLabel.setText(data.getDisplay()); } } itemLabel.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); itemLabel.setCursor(SWTResourceManager.getCursor(SWT.CURSOR_HAND)); itemLabel.addListener(SWT.MouseEnter, new Listener(){ @Override public void handleEvent(Event event) { changeItemSelection(itemLabel); } }); itemLabel.addListener(SWT.MouseExit, new Listener(){ @Override public void handleEvent(Event event) { changeItemUnSelection(itemLabel); } }); itemLabel.addListener(SWT.MouseDown, new Listener(){ @Override public void handleEvent(Event event) { if(null == dropdownBeforeEvent || dropdownBeforeEvent.selectBeforeEvent(data)){ contentText.setText(data.getDisplay()); contentText.setData("value", data.getValue()); contentText.setData("data", data); if(CollectionUtil.isNotEmpty(dropDownBox.getSelectListener())){ for(Listener listener:dropDownBox.getSelectListener()){ event.data = data; listener.handleEvent(event); } } } Composite comboComposite = dropDownBox.getComboComposite(); if(comboComposite !=null && !comboComposite.isDisposed()){ dropDownBox.comboDispose(); } } }); } private void changeItemSelection(CLabel itemLabel){ itemLabel.getParent().setBackground(SWTResourceManager.getColor(110,154,255)); itemLabel.setBackground(SWTResourceManager.getColor(110,154,255)); itemLabel.setForeground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); } private void changeItemUnSelection(CLabel itemLabel){ itemLabel.getParent().setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); itemLabel.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); itemLabel.setForeground(SWTResourceManager.getColor(51,51,51)); } public String getValue(){ return (String)this.contentText.getData("value"); } /** * 清除当前选择*/ public void clearValue(){ this.contentText.setText(StringUtils.EMPTY); this.contentText.setData("value", null); this.contentText.setData("data", null); } public int getComboWidth() { return comboWidth; } public void setComboWidth(int comboWidth) { this.comboWidth = comboWidth; } public int getComboHeight() { return comboHeight; } public void setComboHeight(int comboHeight) { this.comboHeight = comboHeight; } public DropDownBox.Data getDefaultValue() { return defaultValue; } /** * 获取当前输入框呈现的值 * @return */ public DropDownBox.Data getDataValue(){ return (DropDownBox.Data)this.contentText.getData("data"); } public void setDefaultValue(DropDownBox.Data defaultValue) { this.defaultValue = defaultValue; } public void setDefaultValue(String defaultValue) { this.defaultValue = new DropDownBox.Data(defaultValue,defaultValue); } public CLabel getContentText() { return contentText; } public Label getImg() { return img; } public Composite getContentComposite() { return contentComposite; } /** * 设置下拉框是否是可用状态 * @param enable */ public void setEnabel(boolean enable){ if(img != null && !img.isDisposed()){ this.enable = enable; img.setEnabled(enable); } } public void setDropdownBeforeEvent(DefinedCommonSingleSelectEvent dropdownBeforeEvent) { this.dropdownBeforeEvent = dropdownBeforeEvent; } /** * <p>通用的接口形式</p> * @version V1.0 */ public interface DefinedCommonSingleSelectEvent{ /** * 打开下拉框之前的操作 * @return */ boolean dropdownBeforeEvent(); /** * 下拉可选之前的操作行为,只有在为true的时候，选择的数据才会生效 * @return */ boolean selectBeforeEvent(DropDownBox.Data data); } public boolean isShowValue() { return showValue; } public void setShowValue(boolean showValue) { this.showValue = showValue; } }
DefinedCommonSingleSelect.java 为所有单选（可编辑下拉框、不可编辑下拉框）下拉框的公共部分。
1.1 不可编辑下拉框 ( DefinedSingleSelect.java )（一个输入框 + 一个下拉弹出框）
package com.view.control.select; import java.util.List; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import com.view.control.select.DefinedCommonSingleSelect.DefinedCommonSingleSelectEvent; /** * <p>不可编辑下拉框，parent为绝对布局</p> * @version V1.0 */ public class DefinedSingleSelect extends DropDownBox<DropDownBox.Data> { private DefinedCommonSingleSelect commonSingleSelect; public DefinedSingleSelect(Composite parent, List<Data> comboDataList, int comboRowWidth) { super(parent, comboDataList, comboRowWidth); commonSingleSelect = new DefinedCommonSingleSelect(parent,this); } public DefinedSingleSelect(Composite parent,List<Data> comboDataList,int comboWidth,int comboHeight) { this(parent,comboDataList,comboWidth); commonSingleSelect = new DefinedCommonSingleSelect(parent,this,comboWidth,comboHeight); } public DefinedSingleSelect(Composite parent,List<Data> comboDataList,int comboWidth,int comboHeight,boolean showValue) { this(parent,comboDataList,comboWidth); commonSingleSelect = new DefinedCommonSingleSelect(parent,this,comboWidth,comboHeight,showValue); } @Override public void paint(){ commonSingleSelect.paint(); } @Override protected void generateComboItemComposite(Data data, Composite itemComposite) { commonSingleSelect.generateComboItemComposite(data, itemComposite); } public String getValue(){ return commonSingleSelect.getValue(); } /** * 清除当前选择*/ public void clearValue(){ commonSingleSelect.clearValue(); } public int getComboWidth() { return commonSingleSelect.getComboWidth(); } public void setComboWidth(int comboWidth) { commonSingleSelect.setComboWidth(comboWidth); } public int getComboHeight() { return commonSingleSelect.getComboHeight(); } public void setComboHeight(int comboHeight) { commonSingleSelect.setComboHeight(comboHeight); } public DropDownBox.Data getDefaultValue() { return commonSingleSelect.getDefaultValue(); } public void setDefaultValue(DropDownBox.Data defaultValue) { commonSingleSelect.setDefaultValue(defaultValue); } public CLabel getContentText() { return commonSingleSelect.getContentText(); } public Label getImg() { return commonSingleSelect.getImg(); } public Composite getContentComposite() { return commonSingleSelect.getContentComposite(); } /** * 设置下拉框是否是可用状态 * @param enable */ public void setEnabel(boolean enable){ commonSingleSelect.setEnabel(enable); } public void setDropdownBeforeEvent(DefinedCommonSingleSelectEvent dropdownBeforeEvent) { commonSingleSelect.setDropdownBeforeEvent(dropdownBeforeEvent); } /** * 获取当前输入框呈现的值 * @return */ public DropDownBox.Data getDataValue(){ return commonSingleSelect.getDataValue(); } }
1.1.1 表单中的下拉框（DefinedFormSingleSelect.java）（标题 + 不可编辑下拉框 + 右侧提示 + 可选帮助提示）
package com.view.control.select; import java.util.Arrays; import java.util.List; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import com.global.constant.Constants; import com.util.FileUtil; import com.view.control.DefinedFormControl; import com.view.control.select.DefinedCommonSingleSelect.DefinedCommonSingleSelectEvent; import com.view.control.valid.IValid; import com.view.swt.SWTResourceManager; import com.view.util.ImageUtil; /** * <p>不可编辑单选下拉框</p> * @version V1.0 */ public class DefinedFormSingleSelect extends DefinedFormControl{ /****内容容器*****/ private Composite contentComposite; /****显示名称控件****/ private CLabel name; /*****显示名称**********/ private String nameText; /*****设置显示名称控件的宽度*****/ private int nameWidth = 100; /*****该控件中存放的默认值***/ private DropDownBox.Data defaultValue; private List<DropDownBox.Data> comboDataList; private DefinedSingleSelect selector; private int comboRowWidth; private int comboWidth = 323; private int comboHeight = 32; private int comboRowHeight = 32; private Listener selectListener; private Listener helpListener; private boolean enable = true; private boolean showValue=false; private DefinedCommonSingleSelectEvent dropdownBeforeEvent; public DefinedFormSingleSelect(Composite parent,String nameText,List<DropDownBox.Data> comboDataList,int comboWidth) { super(parent); this.nameText = nameText; this.comboDataList = comboDataList; this.comboWidth = comboWidth; } public DefinedFormSingleSelect(Composite parent,String nameText,List<DropDownBox.Data> comboDataList,int comboWidth,int nameWidth,int comboHeight) { this(parent,nameText,comboDataList,comboWidth); this.comboWidth = comboWidth; this.nameWidth = nameWidth; this.comboHeight = comboHeight; } public DefinedFormSingleSelect(Composite parent,String nameText,List<DropDownBox.Data> comboDataList,int comboWidth,int nameWidth,int comboHeight,boolean showValue) { this(parent,nameText,comboDataList,comboWidth); this.comboWidth = comboWidth; this.nameWidth = nameWidth; this.comboHeight = comboHeight; this.showValue=showValue; } @Override public void paint() { contentComposite = new Composite(this.parent,SWT.NONE); GridData gd_contentComposite = new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1); gd_contentComposite.heightHint = comboHeight; contentComposite.setLayoutData(gd_contentComposite); GridLayout gl_contentComposite =new GridLayout(this.helpListener != null ? 4 : 3,false); gl_contentComposite.horizontalSpacing = 5; gl_contentComposite.verticalSpacing = 0; gl_contentComposite.marginHeight = 0; contentComposite.setLayout(gl_contentComposite); contentComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); name = new CLabel(contentComposite,SWT.NONE); GridData gd_name = new GridData(SWT.RIGHT, SWT.FILL, false, true, 1, 1); gd_name.widthHint = nameWidth; name.setLayoutData(gd_name); name.setAlignment(SWT.RIGHT); if(this.require){ name.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream("images/asterisk.png"))); } name.setText(nameText); name.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); if(this.helpListener != null){ //添加帮助图标 Label help_img = new Label(contentComposite,SWT.NONE); help_img.setToolTipText("获取帮助"); help_img.setBackground(SWTResourceManager.getWhiteColor()); help_img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream(Constants.HELP_NOR))); GridData gd_help_img = new GridData(SWT.LEFT,SWT.LEFT,false,false,1,1); gd_help_img.widthHint = 26; gd_help_img.heightHint = 24; help_img.setLayoutData(gd_help_img); help_img.setCursor(SWTResourceManager.getCursor(SWT.CURSOR_HAND)); help_img.addListener(SWT.MouseDown, this.helpListener); help_img.addListener(SWT.MouseEnter, new Listener(){ @Override public void handleEvent(Event event) { help_img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream(Constants.HELP_HOVER))); } }); help_img.addListener(SWT.MouseExit, new Listener(){ @Override public void handleEvent(Event event) { help_img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream(Constants.HELP_NOR))); } }); } selector = new DefinedSingleSelect(contentComposite,this.comboDataList,this.comboWidth,this.comboHeight,showValue); if(this.comboRowWidth != 0){ selector.setComboRowWidth(this.comboRowWidth); } if(this.comboRowHeight!= 0){ selector.setComboRowHeight(this.comboRowHeight); } if(null != this.defaultValue){ selector.setDefaultValue(this.defaultValue); } if(null != selectListener){ selector.addSelectListener(new Listener(){ @Override public void handleEvent(Event event) { showNormalMention(selector.getContentText()); } }); selector.addSelectListener(selectListener); } if(null != dropdownBeforeEvent){ selector.setDropdownBeforeEvent(dropdownBeforeEvent); } selector.paint(); selector.setEnabel(enable); mention = new Label(contentComposite,SWT.WRAP); GridData gd_mention = new GridData(SWT.LEFT, SWT.CENTER, false, true, 1, 1); if(super.mentionWidth != 0){ gd_mention.widthHint = super.mentionWidth; }else{ Rectangle bounds = this.parent.getBounds(); if(bounds.width == 0){ bounds = this.parent.getParent().getBounds(); } gd_mention.widthHint = bounds.width - nameWidth - this.comboWidth-90; } mention.setLayoutData(gd_mention); mention.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); showNormalMention(getMentionComposite()); } /** * 显示错误信息 * @param errorText */ public void showErrorMention(String errorText){ super.showErrorMention(errorText, getMentionComposite()); } /** * 设置成默认信息 * @param text */ public void resetNormalDefaultMention(String text){ this.defaultMention = text; showNormalMention(getMentionComposite()); } /** * 显示默认提示*/ public void showNormalMention() { showNormalMention(getMentionComposite()); } public void showNormalMention(String mentionTxt) { String originalMention = this.defaultMention; this.defaultMention = mentionTxt; showNormalMention(getMentionComposite()); this.defaultMention = originalMention; } public void setNameWidth(int nameWidth) { this.nameWidth = nameWidth; } public Composite getContentComposite() { return contentComposite; } public void setDefaultMention(String defaultMention) { this.defaultMention = defaultMention; } public DropDownBox.Data getDefaultValue() { return defaultValue; } public void setDefaultValue(DropDownBox.Data defaultValue) { this.defaultValue = defaultValue; } public String getValue(){ return selector.getValue(); } public Label getImg() { return selector.getImg(); } public void setSelectListener(Listener selectListener) { this.selectListener = selectListener; } public void setComboRowHeight(int comboRowHeight) { this.comboRowHeight = comboRowHeight; } public void setHelpListener(Listener helpListener) { this.helpListener = helpListener; } public void setEnable(boolean enable) { this.enable = enable; } public Label getMention() { return mention; } public DefinedSingleSelect getSelector() { return selector; } public void addValidListener(Integer mouseEvent,IValid ...valid){ if(valid.length != 0){ this.validlisteners.putAll(mouseEvent, Arrays.asList(valid)); } } public void setDropdownBeforeEvent(DefinedCommonSingleSelectEvent dropdownBeforeEvent) { this.dropdownBeforeEvent = dropdownBeforeEvent; } @Override public Composite getMentionComposite() { return selector.getContentText(); } /** * 更换下拉选择框的选择范围 * @param comboDataList */ public void setComboDataList(List<DropDownBox.Data> comboDataList){ this.comboDataList = comboDataList; selector.setComboDataList(comboDataList); } /** * 清除选择的内容*/ public void clearValue(){ selector.clearValue(); } }
1.2 可编辑下拉框 ( DefinedSingleSelectWithText .java )（一个输入框 + 一个下拉弹出框）
package com.view.control.select; import java.util.ArrayList; import java.util.List; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Text; import com.util.CollectionUtil; import com.util.FileUtil; import com.util.StringUtil; import com.view.swt.SWTResourceManager; import com.view.swt.SWTUtil; import com.view.util.ImageUtil; /** * <p>可编辑下拉框，parent为绝对布局</p> * @version V1.0 */ public class DefinedSingleSelectWithText extends DropDownBox<DropDownBox.Data> { /****内容框容器的宽度****/ private int comboWidth = 323; /****内容框容器的高度*****/ private int comboHeight = 32; /****内容框容器*****/ private Text contentText; private Label img; private String defaultValue; private List<Listener> contextListener; private boolean showImg = true; public DefinedSingleSelectWithText(Composite parent, List<Data> comboDataList, int comboRowWidth) { super(parent, comboDataList, comboRowWidth); } public DefinedSingleSelectWithText(Composite parent,List<Data> comboDataList,int comboWidth,int comboHeight) { this(parent,comboDataList,comboWidth); this.comboWidth = comboWidth; this.comboHeight = comboHeight; } @Override public void paint(){ contentText = generateComposite(this.parent); if(StringUtil.isNotNullAndEmpty(this.defaultValue)){ contentText.setText(defaultValue); } } /** * 创建文本框控件 * @param contentComposite * @return */ public Text generateComposite(Composite parentComposite){ contentComposite = new Composite(parentComposite, SWT.NONE); contentComposite.setBounds(0, 0, this.comboWidth, this.comboHeight); GridLayout grid = new GridLayout(showImg?2:1, false); grid.horizontalSpacing = 1; grid.verticalSpacing = 0; grid.marginHeight = 1; grid.marginWidth = 5; contentComposite.setLayout(grid); contentComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); SWTUtil.paintBorder(contentComposite, SWTResourceManager.getColor(229,229,229)); Text contentText = new Text(contentComposite,SWT.NONE); GridData gd_contentText = new GridData(SWT.FILL, SWT.CENTER, true, true, 1, 1); contentText.setLayoutData(gd_contentText); contentText.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); if(CollectionUtil.isNotEmpty(this.contextListener)){ for(Listener listener:this.contextListener){ contentText.addListener(SWT.Modify,listener); } } if(showImg){ img = new Label(contentComposite, SWT.NONE); GridData gd_img = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1); gd_img.widthHint = 24; gd_img.heightHint = 24; img.setLayoutData(gd_img); img.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream("images/h-icon-angle-minimum-down.png"))); img.setCursor(SWTResourceManager.getCursor(SWT.CURSOR_HAND)); img.addListener(SWT.MouseDown, new Listener(){ @Override public void handleEvent(Event event) { //绘制下拉框 if(comboComposite != null && !comboComposite.isDisposed()){ comboDispose(); }else{ comboPaint(); } } }); } contentComposite.layout(true); return contentText; } @Override protected void generateComboItemComposite(Data data, Composite itemComposite) { CLabel itemLabel = new CLabel(itemComposite,SWT.NONE); itemLabel.setData("data",data); itemLabel.setAlignment(SWT.LEFT); itemLabel.setBounds(10, 0, this.comboRowWidth -10, this.comboRowHeight); itemLabel.setText(data.getDisplay()); itemLabel.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); itemLabel.setCursor(SWTResourceManager.getCursor(SWT.CURSOR_HAND)); itemLabel.addListener(SWT.MouseEnter, new Listener(){ @Override public void handleEvent(Event event) { changeItemSelection(itemLabel); } }); itemLabel.addListener(SWT.MouseExit, new Listener(){ @Override public void handleEvent(Event event) { changeItemUnSelection(itemLabel); } }); itemLabel.addListener(SWT.MouseDown, new Listener(){ @Override public void handleEvent(Event event) { comboComposite.setVisible(false); contentText.setText(data.getDisplay()); contentText.setData("value", data.getValue()); } }); } private void changeItemSelection(CLabel itemLabel){ itemLabel.getParent().setBackground(SWTResourceManager.getColor(110,154,255)); itemLabel.setBackground(SWTResourceManager.getColor(110,154,255)); itemLabel.setForeground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); } private void changeItemUnSelection(CLabel itemLabel){ itemLabel.getParent().setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); itemLabel.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); itemLabel.setForeground(SWTResourceManager.getColor(51,51,51)); } public String getValue(){ return (String)this.contentText.getData("value"); } public int getComboWidth() { return comboWidth; } public void setComboWidth(int comboWidth) { this.comboWidth = comboWidth; } public int getComboHeight() { return comboHeight; } public void setComboHeight(int comboHeight) { this.comboHeight = comboHeight; } public String getDefaultValue() { return defaultValue; } public void setDefaultValue(String defaultValue) { this.defaultValue = defaultValue; } public Text getContentText() { return contentText; } public Label getImg() { return img; } public Composite getContentComposite() { return contentComposite; } /** * 添加输入事件 * @param listener */ public void addCotextListener(Listener listener) { if(this.contextListener == null){ this.contextListener = new ArrayList<Listener>(); } this.contextListener.add(listener); } public boolean isShowImg() { return showImg; } public void setShowImg(boolean showImg) { this.showImg = showImg; } }
1.2.1 表单中的下拉框（DefinedFormSingleSelectWithText .java）（标题 + 可编辑下拉框 + 右侧提示 + 可选帮助提示）
package com.view.control.select; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Set; import org.apache.commons.collections.map.MultiValueMap; import org.apache.commons.lang.StringUtils; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CLabel; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.FocusListener; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import com.global.constant.Constants; import com.util.CollectionUtil; import com.util.FileUtil; import com.util.StringUtil; import com.view.control.DefinedControl; import com.view.control.valid.DefinedValidListener; import com.view.control.valid.IValid; import com.view.control.valid.RequiredValid; import com.view.swt.SWTResourceManager; import com.view.swt.SWTUtil; import com.view.util.ImageUtil; /** * <p>可编辑单选下拉框</p> * @version V1.0 */ public class DefinedFormSingleSelectWithText extends DefinedControl{ /****内容容器*****/ private Composite contentComposite; /****显示名称控件****/ private CLabel name; /****是否是必填项****/ private boolean require; /****提示信息********/ private Label mention; /*****显示名称**********/ private String nameText; /*****设置显示名称控件的宽度*****/ private int nameWidth = 100; /*****校验结果,值为true，表示校验通过****/ private boolean validResult = true; /*****默认提示，主要显示error区域*****/ private String defaultMention; /*****该控件中存放的默认值***/ private String defaultValue; private List<DropDownBox.Data> comboDataList; private DefinedSingleSelectWithText selector; private int comboRowWidth; private int comboWidth = 323; private int comboHeight = 32; private int comboRowHeight = 32; private Listener contextListener; private MultiValueMap validlisteners = MultiValueMap.decorate(new HashMap<Integer,IValid>()); private Listener helpListener; private boolean showImg = true; public DefinedFormSingleSelectWithText(Composite parent,String nameText,List<DropDownBox.Data> comboDataList,int comboRowWidth) { super(parent); this.nameText = nameText; this.comboDataList = comboDataList; this.comboRowWidth = comboRowWidth; } public DefinedFormSingleSelectWithText(Composite parent,String nameText,List<DropDownBox.Data> comboDataList,int comboWidth,int nameWidth,int comboHeight) { this(parent,nameText,comboDataList,comboWidth); this.comboWidth = comboWidth; this.nameWidth = nameWidth; this.comboHeight = comboHeight; } @SuppressWarnings("unchecked") @Override public void paint() { contentComposite = new Composite(this.parent,SWT.NONE); GridData gd_contentComposite = new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1); gd_contentComposite.heightHint = comboHeight; contentComposite.setLayoutData(gd_contentComposite); GridLayout gl_contentComposite = new GridLayout(this.helpListener != null ? 4 : 3,false); gl_contentComposite.horizontalSpacing = 5; gl_contentComposite.verticalSpacing = 0; gl_contentComposite.marginHeight = 0; contentComposite.setLayout(gl_contentComposite); contentComposite.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); name = new CLabel(contentComposite,SWT.NONE); GridData gd_name = new GridData(SWT.RIGHT, SWT.FILL, false, true, 1, 1); gd_name.widthHint = nameWidth; name.setLayoutData(gd_name); name.setAlignment(SWT.RIGHT); if(this.require){ name.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream("images/asterisk.png"))); } name.setText(nameText); name.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); if(this.helpListener != null){ //添加帮助图标 Label help_img = new Label(contentComposite,SWT.NONE); help_img.setToolTipText("获取帮助"); help_img.setBackground(SWTResourceManager.getWhiteColor()); help_img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream(Constants.HELP_NOR))); GridData gd_help_img = new GridData(SWT.LEFT,SWT.LEFT,false,false,1,1); gd_help_img.widthHint = 26; gd_help_img.heightHint = 24; help_img.setLayoutData(gd_help_img); help_img.setCursor(SWTResourceManager.getCursor(SWT.CURSOR_HAND)); help_img.addListener(SWT.MouseDown, this.helpListener); help_img.addListener(SWT.MouseEnter, new Listener(){ @Override public void handleEvent(Event event) { help_img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream(Constants.HELP_HOVER))); } }); help_img.addListener(SWT.MouseExit, new Listener(){ @Override public void handleEvent(Event event) { help_img.setImage(ImageUtil.getImage(FileUtil.loadResourceFileAsStream(Constants.HELP_NOR))); } }); } Composite selectorComposite = new Composite(contentComposite,SWT.NONE); GridData gd_selectorComposite = new GridData(SWT.LEFT, SWT.FILL, false, false, 1, 1); gd_selectorComposite.widthHint = this.comboWidth; gd_selectorComposite.heightHint = this.comboHeight; selectorComposite.setLayoutData(gd_selectorComposite); selector = new DefinedSingleSelectWithText(selectorComposite,this.comboDataList,this.comboWidth,this.comboHeight); if(this.comboRowWidth != 0){ selector.setComboRowWidth(this.comboRowWidth); } if(this.comboRowHeight!= 0){ selector.setComboRowHeight(this.comboRowHeight); } if(StringUtil.isNotNullAndEmpty(this.defaultValue)){ selector.setDefaultValue(this.defaultValue); } if(null != contextListener){ selector.addCotextListener(contextListener); } selector.setShowImg(showImg); selector.paint(); mention = new Label(contentComposite,SWT.WRAP); GridData gd_mention = new GridData(SWT.LEFT, SWT.CENTER, false, true, 1, 1); Rectangle bounds = this.parent.getBounds(); if(bounds.width == 0){ bounds = this.parent.getParent().getBounds(); } gd_mention.widthHint = bounds.width - nameWidth - this.comboWidth-10; mention.setLayoutData(gd_mention); mention.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE)); showNormalMention(); /*****为输入添加事件***************/ if(require){ RequiredValid valid = new RequiredValid(); selector.getContentText().addFocusListener(new FocusListener(){ @Override public void focusGained(FocusEvent e) { validResult = true; } @Override public void focusLost(FocusEvent e) { if(validResult){ String message = valid.valid(selector.getContentText().getText()); if(StringUtil.isNotNullAndEmpty(message)){ showErrorMention(message); }else{ showNormalMention(); } } } }); } if(CollectionUtil.isNotMultiEmpty(validlisteners)){ selector.getContentText().addListener(SWT.Modify, new Listener(){ @Override public void handleEvent(Event event) { validResult = true; } });; Set<Integer> keySet = validlisteners.keySet(); Iterator<IValid> iterator = null; IValid valid = null; for(Integer key:keySet){ if(CollectionUtil.isNotEmpty(validlisteners.getCollection(key))){ iterator = validlisteners.getCollection(key).iterator(); while(iterator.hasNext()){ valid = iterator.next(); selector.getContentText().addListener(key, new DefinedValidListener(valid){ @Override public void handleEvent(Event event) { if(validResult){ String message = this.getValid().valid(selector.getValue()); if(StringUtil.isNotNullAndEmpty(message)){ showErrorMention(message); }else{ showNormalMention(); } } } }); } } } } } /** * 显示错误信息 * @param errorText */ private void showErrorMention(String errorText){ SWTUtil.changeBorderToRed(selector.getContentComposite()); mention.setText(errorText); mention.setForeground(SWTResourceManager.getColor(SWT.COLOR_RED)); mention.getParent().layout(true); validResult = false; } /** * 显示默认提示*/ private void showNormalMention(){ SWTUtil.changeBorderToNormal(selector.getContentComposite()); if(StringUtil.isNotNullAndEmpty(defaultMention)){ mention.setForeground(SWTResourceManager.getColor(200,200,200)); mention.setText(defaultMention); }else{ mention.setText(StringUtils.EMPTY); } mention.getParent().layout(true); validResult = true; } public void addValidListener(Integer mouseEvent,IValid ...valid){ if(valid.length != 0){ this.validlisteners.putAll(mouseEvent, Arrays.asList(valid)); } } public boolean notifyValid(){ if(CollectionUtil.isNotMultiEmpty(validlisteners)){ @SuppressWarnings("unchecked") Set<Integer> keySet = validlisteners.keySet(); Event event = new Event(); event.widget = selector.getContentText(); MultiValueMap excludeListener = MultiValueMap.decorate(new HashMap<Integer,Listener>(), ArrayList.class); for(Integer key:keySet){ if(CollectionUtil.isNotEmpty(validlisteners.getCollection(key))){ if(validResult){ Listener[] listeners = selector.getContentText().getListeners(key); for(Listener listener:listeners){ if(!(listener instanceof DefinedValidListener)){ excludeListener.put(key, listener); selector.getContentText().removeListener(key, listener); } } selector.getContentText().notifyListeners(key, event); } } } if(CollectionUtil.isNotEmpty(excludeListener)){ for(Object key:excludeListener.keySet()){ for(Object listener:excludeListener.getCollection(key)){ selector.getContentText().addListener((Integer)key, (Listener)listener); } } } } return validResult; } public void setNameWidth(int nameWidth) { this.nameWidth = nameWidth; } public Composite getContentComposite() { return contentComposite; } public void setRequire(boolean require) { this.require = require; } public void setMention(Label mention) { this.mention = mention; } public void setDefaultMention(String defaultMention) { this.defaultMention = defaultMention; } public String getDefaultValue() { return defaultValue; } public void setDefaultValue(String defaultValue) { this.defaultValue = defaultValue; } public String getValue(){ return selector.getContentText().getText(); } public Label getImg() { return selector.getImg(); } public void setContextListener(Listener listener) { this.contextListener = listener; } public void setComboRowHeight(int comboRowHeight) { this.comboRowHeight = comboRowHeight; } public DefinedSingleSelectWithText getSelector() { return selector; } public Composite getComboComposite() { return selector.getComboComposite(); } public void setComboDataList(List<DropDownBox.Data> comboDataList) { this.comboDataList = comboDataList; } public void setHelpListener(Listener helpListener) { this.helpListener = helpListener; } public boolean isShowImg() { return showImg; } public void setShowImg(boolean showImg) { this.showImg = showImg; } }
关于多选下拉框、带搜索功能的下拉框见下章节。
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