Hi, all
My goal is creation of code folding functionality on our eclipse plug-in project. We develop editor of the complicated text files what contains from the several parts.
To implements it I created the demo project https://github.com/vladimirkozhaev/simpleeditor.
If I allow only XML content in my file everything is fine and folding works.
Please, see my code bellow
package org.newlanguageservice.editor;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.reconciler.DirtyRegion;
import org.eclipse.jface.text.reconciler.IReconcilingStrategy;
import org.eclipse.jface.text.reconciler.IReconcilingStrategyExtension;
import org.eclipse.swt.widgets.Display;
import com.idc.omega.xml.XMLNodeInfo;
import com.idc.omega.xml.XMLParserVisitor;
public class SimpleReconciclingStrategy implements IReconcilingStrategy, IReconcilingStrategyExtension {
private MinimalEditor editor;
private IDocument fDocument;
/** holds the calculated positions */
protected final List<Position> fPositions = new ArrayList<Position>();
@Override
public void setProgressMonitor(IProgressMonitor monitor) {
// TODO Auto-generated method stub
}
public void initialReconcile() {
calculatePositions();
}
private void calculatePositions() {
fPositions.clear();
String string = fDocument.get();
try {
XMLNodeInfo makeNodesInfo = XMLParserVisitor.makeNodesInfo(string);
System.out.println(makeNodesInfo);
fillPositions(fPositions, makeNodesInfo);
Display.getDefault().asyncExec(new Runnable() {
public void run() {
editor.updateFoldingStructure(fPositions);
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
private void fillPositions(List<Position> fPositions, XMLNodeInfo makeNodesInfo) {
if (makeNodesInfo == null) {
return;
}
int offset = makeNodesInfo.getOffset();
int lenght = makeNodesInfo.getLenght();
Position position = new Position(offset, lenght);
fPositions.add(position);
makeNodesInfo.getChildren().forEach(child -> fillPositions(fPositions, child));
}
@Override
public void reconcile(DirtyRegion dirtyRegion, IRegion subRegion) {
initialReconcile();
}
@Override
public void reconcile(IRegion partition) {
initialReconcile();
}
public void setEditor(MinimalEditor editor) {
this.editor = editor;
}
public void setDocument(IDocument document) {
this.fDocument = document;
}
}
But when try to folde only part between tags XML>> and <<XML I have problem.
Please, see code with changes bellow
package org.newlanguageservice.editor;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.reconciler.DirtyRegion;
import org.eclipse.jface.text.reconciler.IReconcilingStrategy;
import org.eclipse.jface.text.reconciler.IReconcilingStrategyExtension;
import org.eclipse.swt.widgets.Display;
import com.idc.omega.xml.XMLNodeInfo;
import com.idc.omega.xml.XMLParserVisitor;
public class SimpleReconciclingStrategy implements IReconcilingStrategy, IReconcilingStrategyExtension {
private MinimalEditor editor;
private IDocument fDocument;
/** holds the calculated positions */
protected final List<Position> fPositions = new ArrayList<Position>();
@Override
public void setProgressMonitor(IProgressMonitor monitor) {
// TODO Auto-generated method stub
}
public void initialReconcile() {
calculatePositions();
}
private void calculatePositions() {
fPositions.clear();
String string = fDocument.get();
try {
[i]while (string.length() > 0) {
int startIndex = string.indexOf("XML>>");
int endIndex = string.indexOf("<<XML");
if (!(startIndex >= 0 && endIndex > 0))
break;
String substring = string.substring(startIndex + "XML>>".length(), endIndex);
XMLNodeInfo makeNodesInfo = XMLParserVisitor.makeNodesInfo(substring);
fillPositions(fPositions, makeNodesInfo);
string = string.substring(endIndex + "<<XML".length());
}[/i]
Display.getDefault().asyncExec(new Runnable() {
public void run() {
editor.updateFoldingStructure(fPositions);
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
private void fillPositions(List<Position> fPositions, XMLNodeInfo makeNodesInfo) {
if (makeNodesInfo == null) {
return;
}
int offset = makeNodesInfo.getOffset();
int lenght = makeNodesInfo.getLenght();
Position position = new Position(offset, lenght);
fPositions.add(position);
makeNodesInfo.getChildren().forEach(child -> fillPositions(fPositions, child));
}
@Override
public void reconcile(DirtyRegion dirtyRegion, IRegion subRegion) {
initialReconcile();
}
@Override
public void reconcile(IRegion partition) {
initialReconcile();
}
public void setEditor(MinimalEditor editor) {
this.editor = editor;
}
public void setDocument(IDocument document) {
this.fDocument = document;
}
}
After mentoned changes code is not working.
Where I'm wrong?
Regards,
Vladimir
] 
Search
Help
Register
Login
Home
