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/*******************************************************************************
* Copyright (c) 2017 Red Hat Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* - Mickael Istria (Red Hat Inc.)
*******************************************************************************/
package org.eclipse.ui.internal.genericeditor.hover;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map.Entry;
import org.eclipse.jface.text.AbstractReusableInformationControlCreator;
import org.eclipse.jface.text.DefaultInformationControl;
import org.eclipse.jface.text.IInformationControl;
import org.eclipse.jface.text.IInformationControlCreator;
import org.eclipse.jface.text.IInformationControlCreatorExtension;
import org.eclipse.jface.text.ITextHover;
import org.eclipse.jface.text.ITextHoverExtension;
import org.eclipse.swt.widgets.Shell;
public class CompositeInformationControlCreator
implements IInformationControlCreator, IInformationControlCreatorExtension {
private final LinkedHashMap<ITextHover, IInformationControlCreator> creators;
public CompositeInformationControlCreator(List<ITextHover> hovers) {
this.creators = new LinkedHashMap<>();
for (ITextHover hover : hovers) {
creators.put(hover, getInformationControlCreator(hover));
}
}
public CompositeInformationControlCreator(LinkedHashMap<ITextHover, IInformationControlCreator> creators) {
this.creators = creators;
}
private static IInformationControlCreator getInformationControlCreator(ITextHover hover) {
IInformationControlCreator controlCreator = null;
if (hover instanceof ITextHoverExtension) {
controlCreator = ((ITextHoverExtension)hover).getHoverControlCreator();
}
if (controlCreator == null) {
controlCreator = new AbstractReusableInformationControlCreator() {
@Override
protected IInformationControl doCreateInformationControl(Shell parent) {
return new DefaultInformationControl(parent, true);
}
};
}
return controlCreator;
}
@Override
public boolean canReuse(IInformationControl control) {
if (control.getClass() != CompositeInformationControl.class) {
return false;
}
CompositeInformationControl other = (CompositeInformationControl)control;
if (!other.creators.equals(this.creators)) {
return false;
}
Iterator<Entry<ITextHover, IInformationControlCreator>> thisIterator = this.creators.entrySet().iterator();
Iterator<Entry<ITextHover, IInformationControl>> otherIterator = other.controls.entrySet().iterator();
do {
Entry<ITextHover, IInformationControlCreator> thisEntry = thisIterator.next();
Entry<ITextHover, IInformationControl> otherEntry = otherIterator.next();
if (!thisEntry.getKey().equals(otherEntry.getKey())) {
return false;
}
if (!(thisEntry.getValue() instanceof IInformationControlCreatorExtension)) {
return false;
}
if (!((IInformationControlCreatorExtension)thisEntry.getValue()).canReuse(otherEntry.getValue())) {
return false;
}
} while (thisIterator.hasNext());
return true;
}
@Override
public boolean canReplace(IInformationControlCreator creator) {
if (creator.getClass() != this.getClass()) {
return false;
}
CompositeInformationControlCreator other = (CompositeInformationControlCreator)creator;
if (other.creators.size() != this.creators.size()) {
return false;
}
Iterator<Entry<ITextHover, IInformationControlCreator>> thisIterator = this.creators.entrySet().iterator();
Iterator<Entry<ITextHover, IInformationControlCreator>> otherIterator = other.creators.entrySet().iterator();
do {
Entry<ITextHover, IInformationControlCreator> thisEntry = thisIterator.next();
Entry<ITextHover, IInformationControlCreator> otherEntry = otherIterator.next();
if (!thisEntry.getKey().equals(otherEntry.getKey())) {
return false;
}
if (!(thisEntry.getValue() instanceof IInformationControlCreatorExtension)) {
return false;
}
if (!((IInformationControlCreatorExtension)thisEntry.getValue()).canReplace(otherEntry.getValue())) {
return false;
}
} while (thisIterator.hasNext());
return true;
}
@Override
public IInformationControl createInformationControl(Shell parent) {
return new CompositeInformationControl(parent, this.creators);
}
}
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