/**
* This file Copyright (c) 2005-2008 Aptana, Inc. This program is
* dual-licensed under both the Aptana Public License and the GNU General
* Public license. You may elect to use one or the other of these licenses.
*
* This program is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. Redistribution, except as permitted by whichever of
* the GPL or APL you select, is prohibited.
*
* 1. For the GPL license (GPL), you can redistribute and/or modify this
* program under the terms of the GNU General Public License,
* Version 3, as published by the Free Software Foundation. You should
* have received a copy of the GNU General Public License, Version 3 along
* with this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Aptana provides a special exception to allow redistribution of this file
* with certain other free and open source software ("FOSS") code and certain additional terms
* pursuant to Section 7 of the GPL. You may view the exception and these
* terms on the web at http://www.aptana.com/legal/gpl/.
*
* 2. For the Aptana Public License (APL), this program and the
* accompanying materials are made available under the terms of the APL
* v1.0 which accompanies this distribution, and is available at
* http://www.aptana.com/legal/apl/.
*
* You may view the GPL, Aptana's exception and additional terms, and the
* APL in the file titled license.html at the root of the corresponding
* plugin containing this source file.
*
* Any modifications to this file must keep this entire header intact.
*/
package com.aptana.ide.editor.js.contentassist;
import org.eclipse.jface.resource.ColorRegistry;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.TextPresentation;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.contentassist.IContextInformationPresenter;
import org.eclipse.jface.text.contentassist.IContextInformationValidator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import com.aptana.ide.core.IdeLog;
import com.aptana.ide.editor.js.JSOffsetMapper;
import com.aptana.ide.editor.scriptdoc.ScriptDocHelper;
import com.aptana.ide.editors.UnifiedEditorsPlugin;
/**
*
*/
public class JSContextInformationValidator implements IContextInformationValidator, IContextInformationPresenter
{
/** The code assist processor. */
private JSContentAssistProcessor fProcessor;
/** The context information to be validated. */
private IContextInformation fContextInformation;
/** Validates the info window, can add styling.
* @param processor
*/
public JSContextInformationValidator(JSContentAssistProcessor processor)
{
fProcessor = processor;
}
/**
* @see org.eclipse.jface.text.contentassist.IContextInformationValidator#install(org.eclipse.jface.text.contentassist.IContextInformation, org.eclipse.jface.text.ITextViewer, int)
*/
public void install(IContextInformation contextInformation, ITextViewer viewer, int offset)
{
fContextInformation= contextInformation;
}
/**
* @see org.eclipse.jface.text.contentassist.IContextInformationValidator#isContextInformationValid(int)
*/
public boolean isContextInformationValid(int offset)
{
if(fProcessor.initalPopup)
{
fProcessor.initalPopup = false;
return true;
}
return (fProcessor.getJSOffsetMapper().getMode(offset).equalsIgnoreCase(JSOffsetMapper.MODE_INVOKING) );
}
/**
* @see org.eclipse.jface.text.contentassist.IContextInformationPresenter#updatePresentation(int, org.eclipse.jface.text.TextPresentation)
*/
public boolean updatePresentation(int offset, TextPresentation presentation)
{
try{
String s = this.fContextInformation.getInformationDisplayString();
int arg = fProcessor.getJSOffsetMapper().getArgIndexAndCalculateMode( );
if(s.indexOf("(") == -1) //$NON-NLS-1$
{
return false;
}
presentation.clear();
String[] lines = s.split(ScriptDocHelper.DEFAULT_DELIMITER);
s = lines[0]; // only look at first line
// If open/close parens, then no params
if( s.indexOf("()") > 0 ) //$NON-NLS-1$
{
return false;
}
// arg text always starts with brace
int count = 0;
int startPos = s.indexOf("("); //$NON-NLS-1$
int endPos = s.indexOf(","); //$NON-NLS-1$
// Single parameter case
if(endPos == -1)
{
endPos = s.indexOf(")"); // arg text always ends with ")" //$NON-NLS-1$
}
RGB blackColor = new RGB(0, 0, 0);
ColorRegistry cm = JFaceResources.getColorRegistry();
cm.put("black", blackColor); //$NON-NLS-1$
Color norm = cm.get("black"); // make this settable //$NON-NLS-1$
StyleRange st = new StyleRange(0, startPos, norm, null, SWT.BOLD);
presentation.addStyleRange(st);
while(count < arg)
{
startPos = endPos;
endPos = s.indexOf(",", startPos + 1); //$NON-NLS-1$
if(endPos == -1)
{
endPos = s.indexOf(")", startPos); //$NON-NLS-1$
}
if(endPos == -1)
{
break;
}
count++;
}
// + 1 accounts for the leading "("
startPos += 1;
st = new StyleRange(startPos, endPos - startPos, norm, null, SWT.BOLD);
presentation.addStyleRange(st);
int delimiterLength = ScriptDocHelper.DEFAULT_DELIMITER.length();
// bold the arg comment names
if(lines.length > 1)
{
int totalLen = lines[0].length() + delimiterLength; // 1 crlf
for(int i = 1; i < lines.length; i++)
{
String line = lines[i];
StyleRange argNameStyle = null;
if(arg + 1 == i)
{
argNameStyle = new StyleRange(totalLen, line.length(), norm, null, SWT.BOLD);
}
else
{
argNameStyle = new StyleRange(totalLen, line.indexOf(":"), norm, null, SWT.NORMAL); //$NON-NLS-1$
}
presentation.addStyleRange(argNameStyle);
totalLen += line.length() + delimiterLength; // 1 crlf
}
}
return true;
}
catch(Exception e)
{
IdeLog.logError(UnifiedEditorsPlugin.getDefault(), Messages.JSContextInformationValidator_ErrorUpdatingCOntext, e);
return true;
}
}
}