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package org.netbeans.modules.scala.debugger.projects;
import java.io.IOException;
import java.util.List;
import javax.swing.JEditorPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;
import javax.swing.text.StyledDocument;
import org.openide.cookies.EditorCookie;
import org.openide.loaders.DataObject;
import org.openide.text.Annotation;
import org.openide.text.DataEditorSupport;
import org.openide.text.Line;
import org.openide.text.NbDocument;
import org.openide.text.Line.Part;
import org.openide.util.RequestProcessor;
import org.netbeans.api.debugger.DebuggerEngine;
import org.netbeans.api.debugger.DebuggerManager;
import org.netbeans.api.debugger.jpda.InvalidExpressionException;
import org.netbeans.api.debugger.jpda.JPDADebugger;
import org.netbeans.api.debugger.jpda.JPDAThread;
import org.netbeans.api.debugger.jpda.ObjectVariable;
import org.netbeans.api.debugger.jpda.Variable;
import org.netbeans.spi.debugger.jpda.EditorContext.Operation;
import org.netbeans.spi.debugger.ui.EditorContextDispatcher;
public class ToolTipAnnotation extends Annotation implements Runnable {
private static final int TO_STRING_LENGTH_LIMIT = 10000;
private Part lp;
private EditorCookie ec;
public String getShortDescription () {
// [TODO] hack for org.netbeans.modules.debugger.jpda.actions.MethodChooser that disables tooltips
if ("true".equals(System.getProperty("org.netbeans.modules.debugger.jpda.doNotShowTooltips"))) { // NOI18N
return null;
}
DebuggerEngine currentEngine = DebuggerManager.getDebuggerManager ().
getCurrentEngine ();
if (currentEngine == null) return null;
JPDADebugger d = currentEngine.lookupFirst(null, JPDADebugger.class);
if (d == null) return null;
Part lp = (Part) getAttachedAnnotatable();
if (lp == null) return null;
Line line = lp.getLine ();
DataObject dob = DataEditorSupport.findDataObject (line);
if (dob == null) return null;
EditorCookie ec = dob.getCookie(EditorCookie.class);
if (ec == null)
return null;
// Only for editable dataobjects
this.lp = lp;
this.ec = ec;
RequestProcessor.getDefault ().post (this);
return null;
}
public void run () {
if (lp == null || ec == null) return ;
StyledDocument doc;
try {
doc = ec.openDocument();
} catch (IOException ex) {
return ;
}
JEditorPane ep = EditorContextDispatcher.getDefault().getCurrentEditor ();
if (ep == null) return ;
int offset;
String expression = getIdentifier (
doc,
ep,
offset = NbDocument.findLineOffset (
doc,
lp.getLine ().getLineNumber ()
) + lp.getColumn ()
);
if (expression == null) return ;
DebuggerEngine currentEngine = DebuggerManager.getDebuggerManager ().
getCurrentEngine ();
if (currentEngine == null) return;
JPDADebugger d = currentEngine.lookupFirst(null, JPDADebugger.class);
if (d == null) return;
JPDAThread t = d.getCurrentThread();
if (t == null || !t.isSuspended()) return ;
String toolTipText = null;
try {
Variable v = null;
List<Operation> operations = t.getLastOperations();
if (operations != null) {
for (Operation operation: operations) {
if (!expression.endsWith(operation.getMethodName())) {
continue;
}
if (operation.getMethodStartPosition().getOffset() <= offset &&
offset <= operation.getMethodEndPosition().getOffset()) {
v = operation.getReturnValue();
}
}
}
if (v == null) {
v = d.evaluate (expression);
}
String type = v.getType ();
if (v instanceof ObjectVariable)
try {
String toString = null;
try {
java.lang.reflect.Method toStringMethod =
v.getClass().getMethod("getToStringValue", // NOI18N
new Class[] { Integer.TYPE });
toStringMethod.setAccessible(true);
toString = (String) toStringMethod.invoke(v, TO_STRING_LENGTH_LIMIT);
} catch (Exception ex) {
ex.printStackTrace();
}
if (toString == null) {
toString = ((ObjectVariable) v).getToStringValue();
}
toolTipText = expression + " = " +
(type.length () == 0 ?
"" :
"(" + type + ") ") +
toString;
} catch (InvalidExpressionException ex) {
toolTipText = expression + " = " +
(type.length () == 0 ?
"" :
"(" + type + ") ") +
v.getValue ();
}
else
toolTipText = expression + " = " +
(type.length () == 0 ?
"" :
"(" + type + ") ") +
v.getValue ();
} catch (InvalidExpressionException e) {
toolTipText = expression + " = >" + e.getMessage () + "<";
}
firePropertyChange (PROP_SHORT_DESCRIPTION, null, toolTipText);
}
public String getAnnotationType () {
return null; // Currently return null annotation type
}
private static String getIdentifier (
StyledDocument doc,
JEditorPane ep,
int offset
) {
String t = null;
if ( (ep.getSelectionStart () <= offset) &&
(offset <= ep.getSelectionEnd ())
) t = ep.getSelectedText ();
if (t != null) return t;
int line = NbDocument.findLineNumber (
doc,
offset
);
int col = NbDocument.findLineColumn (
doc,
offset
);
try {
Element lineElem =
NbDocument.findLineRootElement (doc).
getElement (line);
if (lineElem == null) return null;
int lineStartOffset = lineElem.getStartOffset ();
int lineLen = lineElem.getEndOffset() - lineStartOffset;
t = doc.getText (lineStartOffset, lineLen);
int identStart = col;
while (identStart > 0 &&
(Character.isJavaIdentifierPart (
t.charAt (identStart - 1)
) ||
(t.charAt (identStart - 1) == '.'))) {
identStart--;
}
int identEnd = col;
while (identEnd < lineLen &&
Character.isJavaIdentifierPart(t.charAt(identEnd))
) {
identEnd++;
}
if (identStart == identEnd) return null;
return t.substring (identStart, identEnd);
} catch (BadLocationException e) {
return null;
}
}
}