/**
* Copyright (c) 2005-2012 by Appcelerator, Inc. All Rights Reserved.
* Licensed under the terms of the Eclipse Public License (EPL).
* Please see the license.txt included with this distribution for details.
* Any modifications to this file must keep this entire header intact.
*/
package com.aptana.js.interactive_console.console;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.ContentAssistEvent;
import org.eclipse.jface.text.contentassist.ICompletionListener;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.contentassist.IContextInformationValidator;
import org.python.pydev.core.log.Log;
import org.python.pydev.editor.codecompletion.AbstractCompletionProcessorWithCycling;
import org.python.pydev.editor.codecompletion.CompletionError;
import org.python.pydev.editor.codecompletion.PyCodeCompletionPreferencesPage;
import org.python.pydev.editor.codecompletion.PyContentAssistant;
import org.python.pydev.editor.codecompletion.PyContextInformationValidator;
import org.python.pydev.editor.codecompletion.PythonCompletionProcessor;
import org.python.pydev.editor.simpleassist.SimpleAssistProcessor;
import com.aptana.interactive_console.console.IScriptConsoleShell;
import com.aptana.interactive_console.console.ui.IScriptConsoleViewer;
/**
* Gathers completions for the js console.
*
* @author fabioz
*/
public class JSConsoleCompletionProcessor extends AbstractCompletionProcessorWithCycling implements
ICompletionListener {
/**
* This is the class that manages the context information (validates it and
* changes its presentation).
*/
private PyContextInformationValidator contextInformationValidator;
private IScriptConsoleShell interpreterShell;
private String errorMessage = null;
private int lastActivationCount = -1;
public JSConsoleCompletionProcessor(IScriptConsoleShell interpreterShell, PyContentAssistant pyContentAssistant) {
super(pyContentAssistant);
pyContentAssistant.addCompletionListener(this);
this.interpreterShell = interpreterShell;
}
public char[] getContextInformationAutoActivationCharacters() {
return null;
}
public char[] getCompletionProposalAutoActivationCharacters() {
return SimpleAssistProcessor.getStaticAutoActivationCharacters(
PythonCompletionProcessor.getStaticCompletionProposalAutoActivationCharacters(), 0);
}
/**
* Get the completions (and cycle the completion mode if needed).
*/
public ICompletionProposal[] computeCompletionProposals(ITextViewer v, int offset) {
//cycle if we're in a new activation for requests (a second ctrl+space or
//a new request)
boolean cycleRequest;
if (lastActivationCount == -1) {
//new request: don't cycle
lastActivationCount = this.pyContentAssistant.lastActivationCount;
cycleRequest = false;
updateStatus();
} else {
//we already had a request (so, we may cycle or not depending on the activation count)
cycleRequest = this.pyContentAssistant.lastActivationCount != lastActivationCount;
}
if (cycleRequest) {
lastActivationCount = this.pyContentAssistant.lastActivationCount;
doCycle();
updateStatus();
}
IScriptConsoleViewer viewer = (IScriptConsoleViewer) v;
try {
if (!PyCodeCompletionPreferencesPage.useCodeCompletion()) {
return new ICompletionProposal[0];
}
String commandLine = viewer.getCommandLine();
int cursorPosition = offset - viewer.getCommandLineOffset();
return interpreterShell.getCompletions(viewer, commandLine, cursorPosition, offset, this.whatToShow);
} catch (Exception e) {
Log.log(e);
CompletionError completionError = new CompletionError(e);
this.errorMessage = completionError.getErrorMessage();
//Make the error visible to the user!
return new ICompletionProposal[] { completionError };
}
}
public IContextInformation[] computeContextInformation(ITextViewer v, int offset) {
return null;
}
public IContextInformationValidator getContextInformationValidator() {
if (contextInformationValidator == null) {
contextInformationValidator = new PyContextInformationValidator();
}
return contextInformationValidator;
}
/**
* @return an error message that happened while getting the completions
*/
public String getErrorMessage() {
String msg = errorMessage;
errorMessage = null;
return msg;
}
public void assistSessionEnded(ContentAssistEvent event) {
}
public void assistSessionStarted(ContentAssistEvent event) {
this.lastActivationCount = -1;
//we have to start with templates because it'll start already cycling.
startCycle();
}
public void selectionChanged(ICompletionProposal proposal, boolean smartToggle) {
}
}