关于编辑器Dirty的处理

今天开始做些小的总结，因为Eclipse插件方面做了不少东西了，也该总结总结学习到的东西了！

为了增加普遍性，例子使用的Editor继承自最简单的EditorPart来制作。

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程序里的说明，作为帮助吧！

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package ztestpluginproject.editors.zeditors;import org.eclipse.core.runtime.IProgressMonitor;import org.eclipse.swt.SWT;import org.eclipse.swt.events.ModifyEvent;import org.eclipse.swt.events.ModifyListener;import org.eclipse.swt.widgets.Composite;import org.eclipse.swt.widgets.Text;import org.eclipse.ui.IEditorInput;import org.eclipse.ui.IEditorSite;import org.eclipse.ui.PartInitException;import org.eclipse.ui.forms.widgets.ColumnLayout;import org.eclipse.ui.forms.widgets.ColumnLayoutData;import org.eclipse.ui.forms.widgets.FormToolkit;import org.eclipse.ui.forms.widgets.Section;import org.eclipse.ui.part.EditorPart;public class ZTestEditor extends EditorPart {// 简单情况下可以自己制作一个标志来记录当前编辑器状况 public boolean isDirty = false;@Overridepublic void doSave(IProgressMonitor monitor) {this.isDirty = false; // 先将标志设置为falsethis.firePropertyChange(PROP_DIRTY); // 通知编辑器要修改状态了}@Overridepublic void doSaveAs() {}@Overridepublic void init(IEditorSite site, IEditorInput input)throws PartInitException {this.setInput(input);this.setSite(site);this.setPartName(input.getName());//设置标签为 文件名}@Overridepublic boolean isDirty() {//firePropertyChange(PROP_DIRTY) 将根据这里返回的值，来修改编辑器状态（保存或者未保存<*>）return this.isDirty;}@Overridepublic boolean isSaveAsAllowed() {return false;}@Overridepublic void createPartControl(Composite parent) {// 这里新建了一个表单 放了三个文本框final FormToolkit toolkit = new FormToolkit(parent.getDisplay());ColumnLayout layout = new ColumnLayout();layout.horizontalSpacing = 5;layout.verticalSpacing = 5;parent.setLayout(layout);Section section = toolkit.createSection(parent, Section.TWISTIE|Section.TITLE_BAR);Composite compo = toolkit.createComposite(section, SWT.NONE);ColumnLayout layoutSection = new ColumnLayout();compo.setLayout(layoutSection);section.setClient(compo);section.setExpanded(true);// 文本框内容变动监听器TxtChangeListener listener = new TxtChangeListener();Text txtName = toolkit.createText(compo, "Mike", SWT.NONE);ColumnLayoutData td = new ColumnLayoutData();txtName.setLayoutData(td);txtName.addModifyListener(listener);Text txtAge = toolkit.createText(compo, "22", SWT.NONE);td = new ColumnLayoutData();txtAge.setLayoutData(td);txtAge.addModifyListener(listener);Text txtSex = toolkit.createText(compo, "m", SWT.NONE);td = new ColumnLayoutData();txtSex.setLayoutData(td);txtSex.addModifyListener(listener);}// 制作监听器 ，这里是对Text进行监听使用ModifyListener//如果是TextField（awt包下）之类的有DocumentListener，此处不再赘述class TxtChangeListener implements ModifyListener {@Overridepublic void modifyText(ModifyEvent e) {System.out.println("ok");isDirty = true;ZTestEditor.this.firePropertyChange(PROP_DIRTY);}}@Overridepublic void setFocus() {}}