/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
package org.epic.perleditor.templates.perl;
import org.epic.perleditor.templates.TemplateContext;
import org.epic.perleditor.templates.TemplateMessages;
//import org.epic.perleditor.templates.perl.PerlUnitContext;
//import org.epic.perleditor.templates.perl.IPerlCompletionProposal;
import org.epic.perleditor.templates.ui.LinkedPositionManager;
import org.epic.perleditor.templates.ui.LinkedPositionUI;
//import org.epic.perleditor.PerlEditorPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Shell;
//import org.eclipse.jdt.internal.ui.text.link.LinkedPositionManager;
//import org.eclipse.jdt.internal.ui.text.link.LinkedPositionUI;
//import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
/**
* A PHP identifier proposal.
*/
public class VariableProposal implements IPerlCompletionProposal {
private final String fTemplate;
private final TemplateContext fContext;
private final ITextViewer fViewer;
private final Image fImage_fun;
private final Image fImage_var;
private final IRegion fRegion;
//private TemplateBuffer fTemplateBuffer;
private String fOldText;
private IRegion fSelectedRegion; // initialized by apply()
/**
* Creates a template proposal with a template and its context.
* @param template the template
* @param context the context in which the template was requested.
* @param image the icon of the proposal.
*/
public VariableProposal(String template, TemplateContext context, IRegion region, ITextViewer viewer, Image image_fun, Image image_var) {
// Assert.isNotNull(template);
// Assert.isNotNull(context);
// Assert.isNotNull(region);
// Assert.isNotNull(viewer);
fTemplate = template;
fContext = context;
fViewer = viewer;
fImage_fun= image_fun;
fImage_var= image_var;
fRegion = region;
}
/*
* @see ICompletionProposal#apply(IDocument)
*/
public void apply(IDocument document) {
try {
// if (fTemplateBuffer == null)
// fTemplateBuffer= fContext.evaluate(fTemplate);
int start = fRegion.getOffset();
int end = fRegion.getOffset() + fRegion.getLength();
// insert template string
// String templateString = fTemplate; // fTemplateBuffer.getString();
document.replace(start, end - start, fTemplate);
// translate positions
LinkedPositionManager manager = new LinkedPositionManager(document);
// TemplatePosition[] variables= fTemplateBuffer.getVariables();
// for (int i= 0; i != variables.length; i++) {
// TemplatePosition variable= variables[i];
//
// if (variable.isResolved())
// continue;
//
// int[] offsets= variable.getOffsets();
// int length= variable.getLength();
//
// for (int j= 0; j != offsets.length; j++)
// manager.addPosition(offsets[j] + start, length);
// }
LinkedPositionUI editor = new LinkedPositionUI(fViewer, manager);
editor.setFinalCaretOffset(fTemplate.length()+start);
// editor.setFinalCaretOffset(getCaretOffset(fTemplateBuffer) + start);
editor.enter();
fSelectedRegion = editor.getSelectedRegion();
} catch (BadLocationException e) {
//PHPeclipsePlugin.log(e);
e.printStackTrace();
openErrorDialog(e);
}
// catch (CoreException e) {
// handleException(e);
// }
}
// private static int getCaretOffset(TemplateBuffer buffer) {
// TemplatePosition[] variables = buffer.getVariables();
// for (int i = 0; i != variables.length; i++) {
// TemplatePosition variable = variables[i];
//
// if (variable.getName().equals(JavaTemplateMessages.getString("GlobalVariables.variable.name.cursor"))) //$NON-NLS-1$
// return variable.getOffsets()[0];
// }
//
// return buffer.getString().length();
// }
/*
* @see ICompletionProposal#getSelection(IDocument)
*/
public Point getSelection(IDocument document) {
return new Point(fSelectedRegion.getOffset(), fSelectedRegion.getLength());
// return null;
}
/*
* @see ICompletionProposal#getAdditionalProposalInfo()
*/
public String getAdditionalProposalInfo() {
// try {
// if (fTemplateBuffer == null)
// fTemplateBuffer= fContext.evaluate(fTemplate);
//return textToHTML(fTemplate); // fTemplateBuffer.getString());
//Do not return additional info for subroutines
return null;
// } catch (CoreException e) {
// handleException(e);
// return null;
// }
}
/*
* @see ICompletionProposal#getDisplayString()
*/
public String getDisplayString() {
// No description available for Perl subroutines
return(fTemplate);
//return fTemplate + TemplateMessages.getString("TemplateProposal.delimiter") + fTemplate; // $NON-NLS-1$ //$NON-NLS-1$
// return fTemplate.getName() + TemplateMessages.getString("TemplateProposal.delimiter") + fTemplate.getDescription(); // $NON-NLS-1$ //$NON-NLS-1$
}
/*
* @see ICompletionProposal#getImage()
*/
public Image getImage() {
if (fTemplate.charAt(0)=='$') {
return fImage_var;
}
return fImage_fun;
}
/*
* @see ICompletionProposal#getContextInformation()
*/
public IContextInformation getContextInformation() {
return null;
}
private static String textToHTML(String string) {
StringBuffer buffer = new StringBuffer(string.length());
buffer.append("<pre>"); //$NON-NLS-1$
for (int i = 0; i != string.length(); i++) {
char ch = string.charAt(i);
switch (ch) {
case '&' :
buffer.append("&"); //$NON-NLS-1$
break;
case '<' :
buffer.append("<"); //$NON-NLS-1$
break;
case '>' :
buffer.append(">"); //$NON-NLS-1$
break;
case '\t' :
buffer.append(" "); //$NON-NLS-1$
break;
case '\n' :
buffer.append("<br>"); //$NON-NLS-1$
break;
default :
buffer.append(ch);
break;
}
}
buffer.append("</pre>"); //$NON-NLS-1$
return buffer.toString();
}
private void openErrorDialog(BadLocationException e) {
Shell shell = fViewer.getTextWidget().getShell();
MessageDialog.openError(shell, TemplateMessages.getString("TemplateEvaluator.error.title"), e.getMessage()); //$NON-NLS-1$
}
private void handleException(CoreException e) {
Shell shell = fViewer.getTextWidget().getShell();
//PHPeclipsePlugin.log(e);
e.printStackTrace();
// ExceptionHandler.handle(e, shell, TemplateMessages.getString("TemplateEvaluator.error.title"), null); //$NON-NLS-1$
}
/*
* @see IJavaCompletionProposal#getRelevance()
*/
public int getRelevance() {
if (fContext instanceof PerlUnitContext) {
PerlUnitContext context = (PerlUnitContext) fContext;
switch (context.getCharacterBeforeStart()) {
// high relevance after whitespace
case ' ' :
case '\r' :
case '\n' :
case '\t' :
return 90;
default :
return 0;
}
} else {
return 90;
}
}
}