我正在制作一个 eclipse 插件，需要在默认的 eclipse 弹出窗口中添加一些自定义建议。为此，我从 eclipse 文档中了解到，我必须实现IJavaCompletionProposalComputer才能参与内容辅助过程。因此，我尝试了在 github 中找到的以下实现。我知道它覆盖了计算建议并作为ICompletionProposal列表返回的computeCompletionProposals()方法。但是我找不到在默认弹出窗口中添加自定义建议的操作。
知道我该怎么做吗？
package zzz.handlers;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.contentassist.CompletionProposal;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.ui.texteditor.HippieProposalProcessor;
import org.eclipse.jdt.ui.text.java.ContentAssistInvocationContext;
import org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer;
import java.util.*;
/**
* Our sample handler extends AbstractHandler, an IHandler base class.
* @see org.eclipse.core.commands.IHandler
* @see org.eclipse.core.commands.AbstractHandler
*/
/**
* A computer wrapper for the hippie processor.
*
* @since 3.2
*/
public final class HippieProposalComputer implements IJavaCompletionProposalComputer {
/** The wrapped processor. */
private final HippieProposalProcessor fProcessor= new HippieProposalProcessor();
/**
* Default ctor to make it instantiatable via the extension mechanism.
*/
public HippieProposalComputer() {
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposalComputer#computeCompletionProposals(org.eclipse.jface.text.contentassist.TextContentAssistInvocationContext, org.eclipse.core.runtime.IProgressMonitor)
*/
@Override
public List<ICompletionProposal> computeCompletionProposals(ContentAssistInvocationContext context, IProgressMonitor monitor) {
return Arrays.asList(fProcessor.computeCompletionProposals(context.getViewer(), context.getInvocationOffset()));
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposalComputer#computeContextInformation(org.eclipse.jface.text.contentassist.TextContentAssistInvocationContext, org.eclipse.core.runtime.IProgressMonitor)
*/
@Override
public List<IContextInformation> computeContextInformation(ContentAssistInvocationContext context, IProgressMonitor monitor) {
return Arrays.asList(fProcessor.computeContextInformation(context.getViewer(), context.getInvocationOffset()));
}
/*
* @see org.eclipse.jface.text.contentassist.ICompletionProposalComputer#getErrorMessage()
*/
@Override
public String getErrorMessage() {
return fProcessor.getErrorMessage();
}
/*
* @see org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer#sessionStarted()
*/
@Override
public void sessionStarted() {
}
/*
* @see org.eclipse.jdt.ui.text.java.IJavaCompletionProposalComputer#sessionEnded()
*/
@Override
public void sessionEnded() {
}
}
我plugin.xml如下...
<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
<extension point="org.eclipse.jdt.ui.javaCompletionProposalComputer"
id="WordCompletionProposalComputer"
name="Word Completion Proposal Computer">
<javaCompletionProposalComputer
class="org.eclipse.jdt.internal.ui.text.java.HippieProposalComputer"
categoryId="org.eclipse.ui.texteditor.textual_proposals">
<partition type="__java_javadoc"/>
</javaCompletionProposalComputer>
</extension>
<extension
point="org.eclipse.ui.commands">
<category
name="Sample Category"
id="zadawdaw.commands.category">
</category>
<command
name="Sample Command"
categoryId="zadawdaw.commands.category"
id="zadawdaw.commands.sampleCommand">
</command>
</extension>
<extension
point="org.eclipse.ui.handlers">
<handler
commandId="zadawdaw.commands.sampleCommand"
class="zadawdaw.handlers.SampleHandler">
</handler>
</extension>
<extension point="org.eclipse.jdt.ui.javaCompletionProposalComputer"
id="textual_proposals"
name="Text Proposals">
<proposalCategory icon="icons/wordcompletions.png"/>
</extension>
<extension
point="org.eclipse.ui.menus">
<menuContribution
locationURI="menu:org.eclipse.ui.main.menu?after=additions">
<menu
label="Sample Menu"
mnemonic="M"
id="zadawdaw.menus.sampleMenu">
<command
commandId="zadawdaw.commands.sampleCommand"
mnemonic="S"
id="zadawdaw.menus.sampleCommand">
</command>
</menu>
</menuContribution>
<menuContribution
locationURI="toolbar:org.eclipse.ui.main.toolbar?after=additions">
<toolbar
id="zadawdaw.toolbars.sampleToolbar">
<command
commandId="zadawdaw.commands.sampleCommand"
icon="icons/sample.png"
tooltip="Say hello world"
id="zadawdaw.toolbars.sampleCommand">
</command>
</toolbar>
</menuContribution>
</extension>
</plugin>
到目前为止，似乎主要错误是将提案提供程序限制为分区类型__java_javadoc。
您已经在正确的type地方寻找(几乎？请注意，此定义也指 IJavaPartitions。简而言之，分区是指编辑器中的文本片段。链接的接口列出了可能的常量以及简短说明。
如果您希望在编辑 Java 代码时提出完成建议，请尝试IJavaPartitions.JAVA_PARTITIONING。