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Diffstat (limited to 'pdf-over-gui/src/main/java/at/asit/pdfover/gui/osx/CocoaUIEnhancer.java')
| -rw-r--r-- | pdf-over-gui/src/main/java/at/asit/pdfover/gui/osx/CocoaUIEnhancer.java | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/osx/CocoaUIEnhancer.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/osx/CocoaUIEnhancer.java deleted file mode 100644 index 60e39aac..00000000 --- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/osx/CocoaUIEnhancer.java +++ /dev/null @@ -1,370 +0,0 @@ -/* - * Copyright 2014 by A-SIT, Secure Information Technology Center Austria - * - * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by - * the European Commission - subsequent versions of the EUPL (the "Licence"); - * You may not use this work except in compliance with the Licence. - * You may obtain a copy of the Licence at: - * http://joinup.ec.europa.eu/software/page/eupl - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the Licence is distributed on an "AS IS" basis, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the Licence for the specific language governing permissions and - * limitations under the Licence. - */ - -package at.asit.pdfover.gui.osx; - -import java.lang.reflect.Method; - -import org.eclipse.swt.SWT; -import org.eclipse.swt.internal.C; -import org.eclipse.swt.internal.Callback; -import org.eclipse.swt.widgets.Display; -import org.eclipse.swt.widgets.Listener; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import at.asit.pdfover.commons.Constants; -import at.asit.pdfover.commons.Messages; - -/** - * Provide a hook to connecting the Preferences, About and Quit menu items of - * the Mac OS X Application menu when using the SWT Cocoa bindings. - * <p> - * This code does not require the Cocoa SWT JAR in order to be compiled as it - * uses reflection to access the Cocoa specific API methods. Use SWT Listeners - * instead in order to use this class in SWT only applications. - * - * </p> - * <p> - * This code was influenced by the <a - * href="http://www.transparentech.com/opensource/cocoauienhancer" - * >CocoaUIEnhancer - Connect the About, Preferences and Quit menus in Mac OS X - * Cocoa SWT and JFace applications</a>. - * </p> - * <p> - * This class works with both the 32-bit and 64-bit versions of the SWT Cocoa - * bindings. - * <p> - * <p> - * This class is released under the Eclipse Public License (<a - * href="http://www.eclipse.org/legal/epl-v10.html">EPL</a>). - */ -public class CocoaUIEnhancer { - static final Logger log = LoggerFactory.getLogger(CocoaUIEnhancer.class); - - private static final long kAboutMenuItem = 0; - private static final long kPreferencesMenuItem = 2; - // private static final long kServicesMenuItem = 4; - private static final long kHideApplicationMenuItem = 6; - private static final long kQuitMenuItem = 10; - - static long sel_toolbarButtonClicked_; - static long sel_preferencesMenuItemSelected_; - static long sel_aboutMenuItemSelected_; - static long sel_hideApplicationMenuItemSelected_; - - static Callback proc3Args; - - /** - * Class invoked via the Callback object to run the about and preferences - * actions. - */ - private static class MenuHookObject { - - final Listener about; - final Listener pref; - - public MenuHookObject(final Listener aboutListener, - final Listener preferencesListener) { - this.about = aboutListener; - this.pref = preferencesListener; - } - - /** - * Will be called on 32bit SWT. - * @param id - * @param sel - * @param arg0 - * @return x - */ - @SuppressWarnings("unused") - public int actionProc(final int id, final int sel, final int arg0) { - return (int) this.actionProc((long) id, (long) sel, (long) arg0); - } - - /** - * Will be called on 64bit SWT. - * @param id - * @param sel - * @param arg0 - * @return x - */ - public long actionProc(final long id, final long sel, final long arg0) { - if (sel == sel_aboutMenuItemSelected_) { - if (log.isDebugEnabled()) { - log.debug("[MenuHookObject - actionProc] : About"); - this.about.handleEvent(null); - } - } else if (sel == sel_preferencesMenuItemSelected_) { - if (log.isDebugEnabled()) { - log.debug("[MenuHookObject - actionProc] : Preferences"); - } - this.pref.handleEvent(null); - - } else { - if (log.isDebugEnabled()) { - log.debug("[MenuHookObject - actionProc] : Unknow selection!"); - } - } - // Return value is not used. - return 99; - } - - // Getters and setters - @SuppressWarnings("unused") - public Listener getAbout() { - return this.about; - } - - @SuppressWarnings("unused") - public Listener getPref() { - return this.pref; - } - } - - /** - * Hook the given Listener to the Mac OS X application Quit menu and the - * IActions to the About and Preferences menus. - * - * @param display - * The Display to use. - * @param quitListener - * The listener to invoke when the Quit menu is invoked. - * @param aboutListener - * The listener to invoke when the About menu is invoked. - * @param preferencesListener - * The listener to invoke when the Preferences menu is invoked. - */ - public static void hookApplicationMenu(final Display display, - final Listener quitListener, final Listener aboutListener, - final Listener preferencesListener) { - // This is our callbackObject whose 'actionProc' method will be called - // when the About or - // Preferences menuItem is invoked. - final MenuHookObject target = new MenuHookObject(aboutListener, - preferencesListener); - - try { - // Initialize the menuItems. - initialize(target); - } catch (final Exception e) { - throw new IllegalStateException(e); - } - - // Connect the quit/exit menu. - if (!display.isDisposed()) { - display.addListener(SWT.Close, quitListener); - } - - // Schedule disposal of callback object - display.disposeExec(() -> { - CocoaUIEnhancer.invoke(proc3Args, "dispose"); - }); - } - - private static void initialize(final Object callbackObject) throws Exception { - - final Class<?> osCls = classForName("org.eclipse.swt.internal.cocoa.OS"); - - // Register names in objective-c. - if (sel_toolbarButtonClicked_ == 0) { - // sel_toolbarButtonClicked_ = registerName( osCls, "toolbarButtonClicked:" ); - sel_preferencesMenuItemSelected_ = registerName(osCls, - "preferencesMenuItemSelected:"); - sel_aboutMenuItemSelected_ = registerName(osCls, - "aboutMenuItemSelected:"); - } - - // Create an SWT Callback object that will invoke the actionProc method - // of our internal - // callbackObject. - proc3Args = new Callback(callbackObject, "actionProc", 3); - final Method getAddress = Callback.class.getMethod("getAddress", - new Class[0]); - Object object = getAddress.invoke(proc3Args, (Object[]) null); - final long proc3 = convertToLong(object); - if (proc3 == 0) { - SWT.error(SWT.ERROR_NO_MORE_CALLBACKS); - } - - final Class<?> nsmenuCls = classForName("org.eclipse.swt.internal.cocoa.NSMenu"); - final Class<?> nsmenuitemCls = classForName("org.eclipse.swt.internal.cocoa.NSMenuItem"); - final Class<?> nsstringCls = classForName("org.eclipse.swt.internal.cocoa.NSString"); - final Class<?> nsapplicationCls = classForName("org.eclipse.swt.internal.cocoa.NSApplication"); - - // Instead of creating a new delegate class in objective-c, - // just use the current SWTApplicationDelegate. An instance of this - // is a field of the Cocoa Display object and is already the target - // for the menuItems. So just get this class and add the new methods - // to it. - object = invoke(osCls, "objc_lookUpClass", - new Object[] { "SWTApplicationDelegate" }); - final long cls = convertToLong(object); - - // Add the action callbacks for Preferences and About menu items. - invoke(osCls, "class_addMethod", new Object[] { wrapPointer(cls), - wrapPointer(sel_preferencesMenuItemSelected_), - wrapPointer(proc3), "@:@" }); - invoke(osCls, "class_addMethod", new Object[] { wrapPointer(cls), - wrapPointer(sel_aboutMenuItemSelected_), wrapPointer(proc3), - "@:@" }); - - // Get the Mac OS X Application menu. - final Object sharedApplication = invoke(nsapplicationCls, - "sharedApplication"); - final Object mainMenu = invoke(sharedApplication, "mainMenu"); - final Object mainMenuItem = invoke(nsmenuCls, mainMenu, "itemAtIndex", - new Object[] { wrapPointer(0) }); - final Object appMenu = invoke(mainMenuItem, "submenu"); - - // Create the About <application-name> menu command - final Object aboutMenuItem = invoke(nsmenuCls, appMenu, "itemAtIndex", - new Object[] { wrapPointer(kAboutMenuItem) }); - final Object nsStrAbout = invoke(nsstringCls, "stringWith", - new Object[] { Messages.formatString("main.about", Constants.APP_NAME) }); - invoke(nsmenuitemCls, aboutMenuItem, "setTitle", - new Object[] { nsStrAbout }); - // Rename the quit action. - final Object quitMenuItem = invoke(nsmenuCls, appMenu, - "itemAtIndex", new Object[] { wrapPointer(kQuitMenuItem) }); - final Object nsStrQuit = invoke(nsstringCls, "stringWith", - new Object[] { Messages.formatString("main.quit", Constants.APP_NAME) }); - invoke(nsmenuitemCls, quitMenuItem, "setTitle", - new Object[] { nsStrQuit }); - - // Rename the hide action. - final Object hideMenuItem = invoke(nsmenuCls, appMenu, - "itemAtIndex", - new Object[] { wrapPointer(kHideApplicationMenuItem) }); - final Object nsStrHide = invoke(nsstringCls, "stringWith", - new Object[] { Messages.formatString("main.hide", Constants.APP_NAME) }); - invoke(nsmenuitemCls, hideMenuItem, "setTitle", - new Object[] { nsStrHide }); - - // Enable the Preferences menuItem. - final Object prefMenuItem = invoke(nsmenuCls, appMenu, "itemAtIndex", - new Object[] { wrapPointer(kPreferencesMenuItem) }); - invoke(nsmenuitemCls, prefMenuItem, "setEnabled", new Object[] { true }); - - // Set the action to execute when the About or Preferences menuItem is - // invoked. - - // We don't need to set the target here as the current target is the - // SWTApplicationDelegate - // and we have registerd the new selectors on it. So just set the new - // action to invoke the - // selector. - invoke(nsmenuitemCls, prefMenuItem, "setAction", - new Object[] { wrapPointer(sel_preferencesMenuItemSelected_) }); - invoke(nsmenuitemCls, aboutMenuItem, "setAction", - new Object[] { wrapPointer(sel_aboutMenuItemSelected_) }); - } - - private static long registerName(final Class<?> osCls, final String name) - throws IllegalArgumentException, SecurityException { - final Object object = invoke(osCls, "sel_registerName", - new Object[] { name }); - return convertToLong(object); - } - - private static long convertToLong(final Object object) { - if (object instanceof Integer) { - final Integer i = (Integer) object; - return i.longValue(); - } - if (object instanceof Long) { - final Long l = (Long) object; - return l.longValue(); - } - return 0; - } - - private static Object wrapPointer(final long value) { - final Class<?> PTR_CLASS = C.PTR_SIZEOF == 8 ? long.class : int.class; - if (PTR_CLASS == long.class) { - return Long.valueOf(value); - } - return Integer.valueOf((int) value); - } - - private static Object invoke(final Class<?> clazz, final String methodName, - final Object[] args) { - return invoke(clazz, null, methodName, args); - } - - private static Object invoke(final Class<?> clazz, final Object target, - final String methodName, final Object[] args) { - try { - final Class<?>[] signature = new Class<?>[args.length]; - for (int i = 0; i < args.length; i++) { - final Class<?> thisClass = args[i].getClass(); - if (thisClass == Integer.class) { - signature[i] = int.class; - } else if (thisClass == Long.class) { - signature[i] = long.class; - } else if (thisClass == Byte.class) { - signature[i] = byte.class; - } else if (thisClass == Boolean.class) { - signature[i] = boolean.class; - } else { - signature[i] = thisClass; - } - } - final Method method = clazz.getMethod(methodName, signature); - return method.invoke(target, args); - } catch (final Exception e) { - throw new IllegalStateException(e); - } - } - - private static Class<?> classForName(final String classname) { - try { - final Class<?> cls = Class.forName(classname); - return cls; - } catch (final ClassNotFoundException e) { - throw new IllegalStateException(e); - } - } - - private static Object invoke(final Class<?> cls, final String methodName) { - return invoke(cls, methodName, (Class<?>[]) null, (Object[]) null); - } - - private static Object invoke(final Class<?> cls, final String methodName, - final Class<?>[] paramTypes, final Object... arguments) { - try { - final Method m = cls.getDeclaredMethod(methodName, paramTypes); - return m.invoke(null, arguments); - } catch (final Exception e) { - throw new IllegalStateException(e); - } - } - - static Object invoke(final Object obj, final String methodName) { - return invoke(obj, methodName, (Class<?>[]) null, (Object[]) null); - } - - private static Object invoke(final Object obj, final String methodName, - final Class<?>[] paramTypes, final Object... arguments) { - try { - final Method m = obj.getClass().getDeclaredMethod(methodName, - paramTypes); - return m.invoke(obj, arguments); - } catch (final Exception e) { - throw new IllegalStateException(e); - } - } -} |