Java tutorial
/******************************************************************************* * Copyright (c) 2005, 2007 IBM Corporation 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 * *******************************************************************************/ package org.eclipse.dltk.tcl.internal.debug.ui.interpreters; import java.lang.reflect.InvocationTargetException; import java.util.HashSet; import java.util.List; import java.util.Set; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.SubProgressMonitor; import org.eclipse.dltk.core.DLTKCore; import org.eclipse.dltk.core.caching.ArchiveContentCacheProvider; import org.eclipse.dltk.core.caching.IContentCache; import org.eclipse.dltk.core.environment.IEnvironment; import org.eclipse.dltk.core.environment.IFileHandle; import org.eclipse.dltk.internal.core.ModelManager; import org.eclipse.dltk.internal.debug.ui.interpreters.AddScriptInterpreterDialog; import org.eclipse.dltk.internal.debug.ui.interpreters.InterpretersBlock; import org.eclipse.dltk.launching.IInterpreterInstall; import org.eclipse.dltk.launching.ScriptRuntime; import org.eclipse.dltk.tcl.core.TclNature; import org.eclipse.dltk.tcl.core.TclPackagesManager; import org.eclipse.dltk.tcl.core.packages.TclPackageInfo; import org.eclipse.jface.dialogs.ProgressMonitorDialog; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; public class TclInterpretersBlock extends InterpretersBlock { private Button fetchInterpreterInformation; protected AddScriptInterpreterDialog createInterpreterDialog(IInterpreterInstall standin) { AddTclInterpreterDialog dialog = new AddTclInterpreterDialog(this, getShell(), ScriptRuntime.getInterpreterInstallTypes(getCurrentNature()), standin); return dialog; } protected String getCurrentNature() { return TclNature.NATURE_ID; } @Override public void createControl(Composite ancestor) { super.createControl(ancestor); fetchInterpreterInformation = createPushButton(buttons, "Fetch information"); fetchInterpreterInformation.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { IStructuredSelection selection = (IStructuredSelection) fInterpreterList.getSelection(); final IInterpreterInstall install = (IInterpreterInstall) selection.getFirstElement(); fetchInterpreterInformation(install); } public void widgetDefaultSelected(SelectionEvent e) { } }); enableButtons(); } @Override protected void enableButtons() { super.enableButtons(); if (fetchInterpreterInformation != null) { IStructuredSelection selection = (IStructuredSelection) fInterpreterList.getSelection(); int selectionCount = selection.size(); if (selectionCount == 1) { fetchInterpreterInformation.setEnabled(true); } else { fetchInterpreterInformation.setEnabled(false); } } } private void fetchInterpreterInformation(final IInterpreterInstall install) { ProgressMonitorDialog dialog = new ProgressMonitorDialog(fetchInterpreterInformation.getShell()); try { dialog.run(true, true, new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException { IContentCache cache = ModelManager.getModelManager().getCoreCache(); monitor.beginTask("Fetching interpreter information", 100); List<TclPackageInfo> list = null; try { TclPackagesManager.markInterprterAsNotFetched(install); list = TclPackagesManager.getPackageInfos(install); } catch (Exception e) { // Try one more time list = TclPackagesManager.getPackageInfos(install); } monitor.worked(20); SubProgressMonitor smon0 = new SubProgressMonitor(monitor, 40); int s = 0; int lsize = list.size(); smon0.beginTask("Fetch package information", lsize / 50); while (s < lsize) { int part = 50; if (lsize - s < part) { part = lsize - s; } if (smon0.isCanceled()) { break; } smon0.subTask("Processing packages info (" + (lsize - s) + " left)"); Set<String> pkgs = new HashSet(); for (int i = s; i < s + part; i++) { pkgs.add(list.get(i).getName()); } try { List<TclPackageInfo> infos = TclPackagesManager.getPackageInfos(install, pkgs, true); } catch (Exception e) { if (DLTKCore.DEBUG) { e.printStackTrace(); } } s += part; smon0.worked(1); } smon0.done(); SubProgressMonitor smon = new SubProgressMonitor(monitor, 40); IEnvironment env = install.getEnvironment(); smon.beginTask("Processing packages", lsize); int index = 1; for (TclPackageInfo tclPackageInfo : list) { smon.subTask("Processing package:" + tclPackageInfo.getName() + " (" + (lsize - index) + " left)"); index++; if (smon.isCanceled()) { break; } boolean processed = false; try { TclPackageInfo info = TclPackagesManager.getPackageInfo(install, tclPackageInfo.getName(), true); if (info != null) { List<String> sources = info.getSources(); Set<IPath> parents = new HashSet<IPath>(); for (String source : sources) { IPath path = new Path(source); IPath parent = path.removeLastSegments(1); parents.add(parent); } for (IPath path : parents) { IFileHandle file = env.getFile(path); if (file.exists()) { ArchiveContentCacheProvider.processFolderIndexes(file, cache, smon); processed = true; } } } } catch (Exception e) { if (DLTKCore.DEBUG) { e.printStackTrace(); } } if (!processed) { smon.worked(1); } } smon.done(); monitor.done(); } }); } catch (Exception e1) { if (DLTKCore.DEBUG) { e1.printStackTrace(); } } } }