/*
* Copyright 2008 Georgi Staykov
*
* This file is part of pscoder.
*
* pscoder is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* pscoder is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with pscoder. If not, see <http://www.gnu.org/licenses/>.
*/
package com.gstaykov.pscoder.editor.handlers;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.text.TextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IEditorDescriptor;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.FileEditorInput;
import org.eclipse.ui.texteditor.ITextEditor;
import com.gstaykov.pscoder.editor.completion.CompletionDictionary;
import com.gstaykov.pscoder.util.Logger;
import com.gstaykov.pscoder.util.Util;
public class GoToDefinitionHandler extends AbstractHandler {
private Logger logger = Logger.getInstance();
public Object execute(ExecutionEvent event) throws ExecutionException {
ISelection selection = ((ITextEditor)Util.getActiveEditor()).getSelectionProvider().getSelection();
TextSelection tselection = null;
if (selection instanceof TextSelection) {
tselection = (TextSelection)selection;
} else {
return null;
}
String functionName = getWord(Util.getActiveDocument(event).get(), tselection.getOffset());
ITextEditor targetEditor = null;
try {
CompletionDictionary dict = CompletionDictionary.getInstance(Util.getActiveFile().getProject().getName());
String fileName = dict.getFileData(Util.getActiveFile().getLocation().toFile().getAbsolutePath()).getFunctionOwner(functionName, dict);
if (fileName == null)
return null;
targetEditor = (ITextEditor)openEditor(fileName);
} catch (CoreException ce) {
logger.logError("Error while trying to get Completion dictionary object", ce);
}
if (targetEditor != null) {
int offset = Util.getActiveDocument(event).get().indexOf(functionName + "(");
targetEditor.setHighlightRange(offset, functionName.length(), true);
}
return null;
}
private String getWord(String document, int offset) {
int startIndex = offset;
int endIndex = offset;
while (Character.isLetterOrDigit(document.charAt(startIndex))) startIndex--;
while (Character.isLetterOrDigit(document.charAt(endIndex))) endIndex++;
startIndex++;
return document.substring(startIndex, endIndex);
}
private IEditorPart openEditor(String fileName) {
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IFile files[] = root.findFilesForLocation(new Path(fileName));
if (files.length != 0) {
IEditorDescriptor desc = PlatformUI.getWorkbench().getEditorRegistry().getDefaultEditor(files[0].getName());
try {
return page.openEditor(new FileEditorInput(files[0]), desc.getId());
} catch (PartInitException pie) {
logger.logError("Unable to open new editor", pie);
}
}
return null;
}
}