我正在创建一个简单的Eclipse编辑器,这个编辑器包含两个页面,其中一个是从AbstractDecoratedTextEditor
扩展的编辑器,然后在我的多页编辑器类I中添加编辑器这样:
MyEditor myEditor = new MyEditor();
addPage(myEditor, myEditor.getEditorInput());
这是我的班级:
public class MyEditor extends AbstractDecoratedTextEditor {
public MyEditor() {
setSourceViewerConfiguration(new SourceViewerConfiguration());
setDocumentProvider(new FileDocumentProvider());
}
@Override
protected boolean isLineNumberRulerVisible() {
return true;
}
public void init(IEditorSite site, IEditorInput input) {
setSite(site);
setInput(input);
}
}
这是日志:
java.lang.NullPointerException
at org.eclipse.ui.texteditor.AddMarkerAction.getResource(AddMarkerAction.java:336)
at org.eclipse.ui.texteditor.AddMarkerAction.update(AddMarkerAction.java:162)
at org.eclipse.ui.texteditor.TextEditorAction.<init>(TextEditorAction.java:49)
at org.eclipse.ui.texteditor.AddMarkerAction.<init>(AddMarkerAction.java:96)
at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createActions(AbstractDecoratedTextEditor.java:1153)
at org.eclipse.ui.texteditor.AbstractTextEditor.createPartControl(AbstractTextEditor.java:3576)
at org.eclipse.ui.texteditor.StatusTextEditor.createPartControl(StatusTextEditor.java:54)
at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.createPartControl(AbstractDecoratedTextEditor.java:447)
at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:243)
at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:325)
....
答案 0 :(得分:1)
您的MyEditor
没有设置编辑器输入。
在您的代码中:
MyEditor myEditor = new MyEditor();
addPage(myEditor, myEditor.getEditorInput());
myEditor.getEditorInput()
将返回null
,因为您尚未为编辑器设置输入。
您必须将正确的编辑器输入传递给addPage
调用(通常是多页编辑器的输入)。然后,这将在编辑器中设置输入。