Java tutorial
/* * Copyright (c) 2012, the Dart project authors. * * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.eclipse.org/legal/epl-v10.html * * Unless required by applicable law or agreed to in writing, software distributed under the License * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express * or implied. See the License for the specific language governing permissions and limitations under * the License. */ package com.github.sdbg.debug.ui.internal; import java.io.File; import java.io.IOException; import java.lang.reflect.Constructor; import java.lang.reflect.Method; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.eclipse.jface.action.IStatusLineManager; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IViewPart; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.PlatformUI; import com.github.sdbg.core.DartCore; import com.github.sdbg.debug.core.DebugUIHelper; import com.github.sdbg.debug.core.SDBGDebugCorePlugin; import com.github.sdbg.debug.core.model.ISDBGDebugTarget; /** * A helper to allow non-UI code to interact with the UI. */ public class DefaultDebugUIHelper extends DebugUIHelper { @Override public void activateApplication(File application, String name) { if (DartCore.isMac()) { activateApplicationMacOS(application); } else if (DartCore.isWindows()) { bringWindowToFrontWin32(".*" + name + "\\z"); } else if (DartCore.isLinux()) { // This is not necessary on Linux. } } @Override public void showDevtoolsDisconnectError(final String _title, final ISDBGDebugTarget target) { final Display display = Display.getDefault(); Display.getDefault().asyncExec(new Runnable() { @Override public void run() { if (display.isDisposed()) { return; } String title = _title; String message = "The debugger connection has been closed by DevTools.\n\n" + "DevTools only supports one connected debugger (e.g. Editor or Chrome DevTools) at a " + "time. Do you want to re-connect? (DevTools must be closed first)"; Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(); while (MessageDialog.openQuestion(shell, title, message)) { try { target.reconnect(); return; } catch (IOException e) { title = "Error Re-connecting"; message = "Unable to reconnect - DevTools must first be closed in the browser." + " Try to reconnect again?\n\n" + "(" + e.toString() + ")"; } } } }); } @Override public void showError(final String title, final String message) { final Display display = Display.getDefault(); Display.getDefault().asyncExec(new Runnable() { @Override public void run() { if (display.isDisposed()) { return; } Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(); MessageDialog.openError(shell, title, message); } }); } @Override public void showStatusLineMessage(final String message) { final Display display = Display.getDefault(); Display.getDefault().asyncExec(new Runnable() { @Override public void run() { if (display.isDisposed()) { return; } IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(); IViewPart part = null; //&&&page.findView(DebuggerView.ID); if (part != null) { IStatusLineManager manager = part.getViewSite().getActionBars().getStatusLineManager(); manager.setMessage(message); } } }); } protected void activateApplicationMacOS(File app) { String appleScript = "tell application \"" + app.getName() + "\" to activate"; ProcessBuilder builder = new ProcessBuilder("osascript", "-e", appleScript); try { builder.start(); } catch (IOException e) { SDBGDebugCorePlugin.logError(e); } } protected void bringWindowToFrontWin32(final String regex) { Display.getDefault().asyncExec(new Runnable() { @Override public void run() { try { bringWindowToFrontWin32_impl(regex); } catch (Exception e) { SDBGDebugCorePlugin.logError(e); } } }); } private void bringWindowToFrontWin32_impl(String regex) throws Exception { final int GW_HWNDNEXT = 0x2; Pattern pattern = Pattern.compile(regex); Number window = OS_GetActiveWindow(); while (window.longValue() != 0) { int textLength = OS_GetWindowTextLength(window); if (textLength > 0) { String str = OS_GetWindowText(window, textLength); Matcher matcher = pattern.matcher(str); if (matcher.matches()) { OS_BringWindowToTop(window); return; } } window = OS_GetWindow(window, GW_HWNDNEXT); } } private Class<?> getOSClass() throws ClassNotFoundException { return Class.forName("org.eclipse.swt.internal.win32.OS"); } private void OS_BringWindowToTop(Number window) throws Exception { if (window instanceof Integer) { Method method = getOSClass().getMethod("BringWindowToTop", int.class); method.invoke(null, window.intValue()); } else { Method method = getOSClass().getMethod("BringWindowToTop", long.class); method.invoke(null, window.longValue()); } } private Number OS_GetActiveWindow() throws Exception { return (Number) getOSClass().getMethod("GetActiveWindow").invoke(null); } private Number OS_GetWindow(Number window, int direction) throws Exception { if (window instanceof Integer) { Method method = getOSClass().getMethod("GetWindow", int.class, int.class); return (Number) method.invoke(null, window.intValue(), direction); } else { Method method = getOSClass().getMethod("GetWindow", long.class, int.class); return (Number) method.invoke(null, window.longValue(), direction); } } private String OS_GetWindowText(Number window, int textLength) throws Exception { Class<?> tcharClass = Class.forName("org.eclipse.swt.internal.win32.TCHAR"); Constructor<?> tcharCtor = tcharClass.getConstructor(int.class, int.class); Object tchar = tcharCtor.newInstance(0, textLength + 2); if (window instanceof Integer) { Method method = getOSClass().getMethod("GetWindowText", int.class, tcharClass, int.class); method.invoke(null, window.intValue(), tchar, textLength + 1); } else { Method method = getOSClass().getMethod("GetWindowText", long.class, tcharClass, int.class); method.invoke(null, window.longValue(), tchar, textLength + 1); } Method tcharToString = tcharClass.getMethod("toString", int.class, int.class); return (String) tcharToString.invoke(tchar, 0, textLength); } private int OS_GetWindowTextLength(Number window) throws Exception { if (window instanceof Integer) { Method method = getOSClass().getMethod("GetWindowTextLength", int.class); return (Integer) method.invoke(null, window.intValue()); } else { Method method = getOSClass().getMethod("GetWindowTextLength", long.class); return (Integer) method.invoke(null, window.longValue()); } } }