/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.click.eclipse.ui.fieldassist;
import java.util.HashMap;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jdt.core.IBuffer;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jface.fieldassist.IContentProposal;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
/**
*
* @author Naoki Takezoe
*/
public class FieldAssistUtils {
private static HashMap<IJavaProject, ICompilationUnit>
unitMap = new HashMap<IJavaProject, ICompilationUnit>();
/**
* Set contents of the compilation unit to the translated jsp text.
*
* @param unit the ICompilationUnit on which to set the buffer contents
* @param value Java source code
*/
public static void setContentsToCU(ICompilationUnit unit, String value){
if (unit == null)
return;
synchronized (unit) {
IBuffer buffer;
try {
buffer = unit.getBuffer();
}
catch (JavaModelException e) {
e.printStackTrace();
buffer = null;
}
if (buffer != null)
buffer.setContents(value);
}
}
/**
* Creates the <code>ICompilationUnit</code> to use temporary.
*
* @param project the java project
* @return the temporary <code>ICompilationUnit</code>
* @throws JavaModelException
*/
public synchronized static ICompilationUnit getTemporaryCompilationUnit(
IJavaProject project) throws JavaModelException {
if(unitMap.get(project) != null){
return unitMap.get(project);
}
IPackageFragment root = project.getPackageFragments()[0];
ICompilationUnit unit = root.getCompilationUnit("_xxx.java").getWorkingCopy(
new NullProgressMonitor());
unitMap.put(project, unit);
return unit;
}
public static class ContentProposalImpl implements IContentProposal {
private String content;
private int position;
public ContentProposalImpl(String content, int position){
this.content = content;
this.position = position;
}
public String getContent() {
return content.substring(position);
}
public int getCursorPosition() {
return content.length() - position;
}
public String getDescription() {
return null;
}
public String getLabel() {
return content;
}
}
/**
* Creates the <code>Composite</code> for the fields which don't need decoration.
*
* @param parent the parent composite
* @param white whether it should paint out the background
* @return the created <code>Composite</code> object
*/
public static Composite createNullDecoratedPanel(Composite parent, boolean white){
Composite composite = new Composite(parent, SWT.NULL);
GridLayout layout = createGridLayout();
layout.horizontalSpacing = 0;
layout.verticalSpacing = 0;
composite.setLayout(layout);
if(white){
composite.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WHITE));
}
Label space = new Label(composite, SWT.NULL);
GridData gd = new GridData();
gd.widthHint = 7;
space.setLayoutData(gd);
if(white){
space.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WHITE));
}
return composite;
}
/**
* Creates <code>GridLayout</code> that has no margin.
*
* @return created <code>GridLayout</code> that has no margin
*/
public static GridLayout createGridLayout(){
GridLayout layout = new GridLayout(2, false);
layout.marginBottom = 0;
layout.marginTop = 0;
layout.marginLeft = 0;
layout.marginRight = 0;
layout.marginWidth = 0;
layout.marginHeight = 0;
return layout;
}
}