Package org.netbeans.modules.scala.debugger.projects

Source Code of org.netbeans.modules.scala.debugger.projects.BreakpointsActionsProvider

/*
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*
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*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common
* Development and Distribution License("CDDL") (collectively, the
* "License"). You may not use this file except in compliance with the
* License. You can obtain a copy of the License at
* http://www.netbeans.org/cddl-gplv2.html
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* particular file as subject to the "Classpath" exception as provided
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package org.netbeans.modules.scala.debugger.projects;

import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.Action;

import org.netbeans.api.debugger.DebuggerEngine;
import org.netbeans.api.debugger.DebuggerManager;
import org.netbeans.api.debugger.jpda.ClassLoadUnloadBreakpoint;
import org.netbeans.api.debugger.jpda.ExceptionBreakpoint;
import org.netbeans.api.debugger.jpda.FieldBreakpoint;
import org.netbeans.api.debugger.jpda.JPDABreakpoint;
import org.netbeans.api.debugger.jpda.LineBreakpoint;
import org.netbeans.api.debugger.jpda.MethodBreakpoint;
import org.netbeans.api.debugger.jpda.ThreadBreakpoint;
import org.netbeans.api.java.classpath.GlobalPathRegistry;
import org.netbeans.spi.debugger.jpda.SourcePathProvider;
import org.netbeans.spi.viewmodel.NodeActionsProvider;
import org.netbeans.spi.viewmodel.UnknownTypeException;
import org.netbeans.spi.viewmodel.Models;
import org.netbeans.spi.viewmodel.NodeActionsProviderFilter;

import org.openide.ErrorManager;
import org.openide.filesystems.FileObject;
import org.openide.filesystems.FileStateInvalidException;
import org.openide.filesystems.URLMapper;
import org.openide.util.NbBundle;


/**
* @author   Martin Entlicher
*/
public class BreakpointsActionsProvider implements NodeActionsProviderFilter {
   
    private static final Action GO_TO_SOURCE_ACTION = Models.createAction (
        loc("CTL_Breakpoint_GoToSource_Label"), // NOI18N
        new Models.ActionPerformer () {
            public boolean isEnabled (Object node) {
                return true;
            }
            public void perform (Object[] nodes) {
                goToSource ((JPDABreakpoint) nodes [0]);
            }
        },
        Models.MULTISELECTION_TYPE_EXACTLY_ONE
    );
       
    private static String loc(String key) {
        return NbBundle.getBundle(BreakpointsActionsProvider.class).getString(key);
    }

    public Action[] getActions (NodeActionsProvider original, Object node)
    throws UnknownTypeException {
        if (!(node instanceof JPDABreakpoint) || node instanceof ThreadBreakpoint)
            return original.getActions (node);
       
        Action[] oas = original.getActions (node);
        Action[] as = new Action [oas.length + 2];
        as [0] = GO_TO_SOURCE_ACTION;
        as [1] = null;
        System.arraycopy (oas, 0, as, 2, oas.length);
        return as;
    }
   
    public void performDefaultAction (NodeActionsProvider original, Object node) throws UnknownTypeException {
        if (node instanceof JPDABreakpoint && !(node instanceof ThreadBreakpoint))
            goToSource ((JPDABreakpoint) node);
        else
            original.performDefaultAction (node);
    }

    private static void goToSource (JPDABreakpoint b) {
        String url;
        int lineNumber;
        if (b instanceof LineBreakpoint) {
            LineBreakpoint lb = (LineBreakpoint) b;
            url = lb.getURL();
            lineNumber = lb.getLineNumber();
            if (lineNumber < 1) lineNumber = 1;
        } else if (b instanceof FieldBreakpoint) {
            FieldBreakpoint fb = (FieldBreakpoint) b;
            String fieldName = fb.getFieldName();
            String className = fb.getClassName ();
            FileObject fo = getFileObject(getRelativePath (className));
            if (fo == null) return ;
            try {
                url = fo.getURL ().toString ();
            } catch (FileStateInvalidException e) {
                return ;
            }
            lineNumber = EditorContextImpl.getFieldLineNumber (
                fo,
                className,
                fieldName
            );
        } else if (b instanceof MethodBreakpoint) {
            MethodBreakpoint mb = (MethodBreakpoint) b;
            String methodName = mb.getMethodName();
            String[] classFilters = mb.getClassFilters();
            if (classFilters.length < 1) return ;
            String className = classFilters[0];
            FileObject fo = getFileObject(getRelativePath (className));
            if (fo == null) return ;
            try {
                url = fo.getURL ().toString ();
            } catch (FileStateInvalidException e) {
                return ;
            }
            int[] lineNumbers = EditorContextImpl.getMethodLineNumbers(
                fo,
                className,
                mb.getClassExclusionFilters(),
                methodName,
                mb.getMethodSignature()
            );
            if (lineNumbers.length == 0) lineNumber = 1;
            else lineNumber = lineNumbers[0];
        } else if (b instanceof ExceptionBreakpoint) {
            ExceptionBreakpoint eb = (ExceptionBreakpoint) b;
            String className = eb.getExceptionClassName();
            FileObject fo = getFileObject(getRelativePath (className));
            if (fo == null) return ;
            try {
                url = fo.getURL ().toString ();
            } catch (FileStateInvalidException e) {
                return ;
            }
            // TODO: EditorContextImpl.getClassLineNumber(fo, className);
            lineNumber = 1;
        } else if (b instanceof ClassLoadUnloadBreakpoint) {
            ClassLoadUnloadBreakpoint cb = (ClassLoadUnloadBreakpoint) b;
            String[] classNames = cb.getClassFilters();
            if (classNames.length == 0) return;
            String className = classNames[0];
            FileObject fo = getFileObject(getRelativePath (className));
            if (fo == null) return ;
            try {
                url = fo.getURL ().toString ();
            } catch (FileStateInvalidException e) {
                return ;
            }
            // TODO: EditorContextImpl.getClassLineNumber(fo, className);
            lineNumber = 1;
        } else {
            return;
        }
        EditorContextImpl.showSourceLine (
            url,
            lineNumber,
            null
        );
        return ;
    }
   
    private static FileObject getFileObject(String classRelPath) {
        DebuggerEngine engine = DebuggerManager.getDebuggerManager ().getCurrentEngine();
        if (engine != null) {
            SourcePathProvider sp = engine.lookupFirst(null, SourcePathProvider.class);
            if (sp != null) {
                String url = sp.getURL(classRelPath, false);
                if (url == null) {
                    url = sp.getURL(classRelPath, true);
                }
                if (url != null) {
                    try {
                        FileObject fo = URLMapper.findFileObject(new URL(url));
                        if (fo != null) {
                            return fo;
                        }
                    } catch (MalformedURLException ex) {
                        ErrorManager.getDefault().notify(ErrorManager.INFORMATIONAL, ex);
                    }
                }
            }
        }
        classRelPath = SourcePathProviderImpl.normalize(classRelPath);
        FileObject fo = GlobalPathRegistry.getDefault().findResource(classRelPath);
        return fo;
    }

    private static String getRelativePath (String className) {
        int i = className.indexOf ('$');
        if (i > 0) className = className.substring (0, i);
        String sourceName = className.replace
            ('.', '/') + ".scala";
        return sourceName;
    }
   
}
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