Question

我一直试图让这个工作好几天，我只是无法理解它...

我正在使用java swt并且我正在尝试打开一个标签，该标签将比较2个字符串并显示并排突出显示的差异。我已经看过很多例子，但似乎无法找到要实现的代码。

我已阅读https://wiki.eclipse.org/FAQ_How_do_I_create_a_compare_editor%3F但不确定如何实际实现此目的。

每当我尝试时，我都会收到错误 -

引起：org.eclipse.core.internal.runtime.AssertionFailedException：null参数：

教程说使用 -

public class CompareEditorAction implements 
IWorkbenchWindowActionDelegate {
  public void run(IAction action) {
     CompareUI.openCompareEditor(new MyCompareInput());
  }
}

但我不确定如何实际调用它。

非常感谢任何帮助。

干杯

抛出错误的代码 -

CompareEditorInput cei = new CompareEditorInput(new CompareConfiguration()) {

    @Override
    protected Object prepareInput(IProgressMonitor arg0)
            throws InvocationTargetException, InterruptedException {
        CompareItem ancestor = new CompareItem("Common", "contents");
        CompareItem left = new CompareItem("Left", "new contents");
        CompareItem right = new CompareItem("Right", "old contents");

        getCompareConfiguration().setLeftLabel(left.getName());
        getCompareConfiguration().setRightLabel(right.getName());
        getCompareConfiguration().setAncestorLabel(ancestor.getName());

        return new DiffNode(null,Differencer.CONFLICTING,ancestor,left,right);
    }
};

CompareItem类

package kam.test;

import javax.swing.*;
import javax.swing.*;
import javax.swing.plaf.basic.BasicButtonUI;

import org.eclipse.compare.CompareConfiguration;
import org.eclipse.compare.CompareEditorInput;
import org.eclipse.compare.IModificationDate;
import org.eclipse.compare.IStreamContentAccessor;
import org.eclipse.compare.ITypedElement;
import org.eclipse.compare.structuremergeviewer.Differencer;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import java.awt.*;
import java.awt.event.*;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;


class CompareItem implements IStreamContentAccessor, ITypedElement, IModificationDate {

private String contents, name;

CompareItem(String name, String contents) {
    this.name = name;
    this.contents = contents;
}

@Override
public long getModificationDate() {
    // TODO Auto-generated method stub
    return 0;
}

@Override
public String getName() {
    // TODO Auto-generated method stub
    return null;
}

@Override
public String getType() {
    // TODO Auto-generated method stub
    return ITypedElement.TEXT_TYPE;
}

@Override
public InputStream getContents() throws CoreException {
    // TODO Auto-generated method stub
    return new ByteArrayInputStream(contents.getBytes());
}

@Override
public org.eclipse.swt.graphics.Image getImage() {
    // TODO Auto-generated method stub
    return null;
}

}

堆栈追踪 -

线程“main”java.lang.ExceptionInInitializerError中的异常 at java.lang.J9VMInternals.initialize（J9VMInternals.java:258）在org.eclipse.compare.internal.ICompareUIConstants。（ICompareUIConstants.java:15） at java.lang.J9VMInternals.initializeImpl（Native Method）在java.lang.J9VMInternals.initialize（J9VMInternals.java:236）在org.eclipse.compare.CompareEditorInput。（CompareEditorInput.java:163） at java.lang.J9VMInternals.initializeImpl（Native Method）在java.lang.J9VMInternals.initialize（J9VMInternals.java:236）在java.lang.J9VMInternals.initialize（J9VMInternals.java:203）在kam.test.NewCompareTest.main（NewCompareTest.java:76）引起：org.eclipse.core.internal.runtime.AssertionFailedException：null参数：在org.eclipse.core.internal.runtime.Assert.isNotNull（Assert.java:82）在org.eclipse.core.internal.runtime.Assert.isNotNull（Assert.java:69） at org.eclipse.core.internal.content.ContentTypeManager.getInstance（ContentTypeManager.java:74）在org.eclipse.core.internal.runtime.InternalPlatform.getContentTypeManager（InternalPlatform.java:363）在org.eclipse.core.runtime.Platform.getContentTypeManager（Platform.java:593）在org.eclipse.compare.internal.CompareUIPlugin。（CompareUIPlugin.java:213） at java.lang.J9VMInternals.initializeImpl（Native Method）在java.lang.J9VMInternals.initialize（J9VMInternals.java:236） ......还有8个

如何使用CompareEditorInput编写一个java比较编辑器来比较2个字符串

0 个答案: