diff options
Diffstat (limited to 'bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/TransferBuilder.java')
| -rw-r--r-- | bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/TransferBuilder.java | 662 |
1 files changed, 0 insertions, 662 deletions
diff --git a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/TransferBuilder.java b/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/TransferBuilder.java deleted file mode 100644 index 4d089d8d89..0000000000 --- a/bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/TransferBuilder.java +++ /dev/null @@ -1,662 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2004 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 - * - * Contributors: - * IBM Corporation - initial API and implementation - * Jens Lukowski/Innoopract - initial renaming/restructuring - * - *******************************************************************************/ -package org.eclipse.wst.sse.ui.internal; - - - -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.List; - -import org.eclipse.core.runtime.CoreException; -import org.eclipse.core.runtime.IConfigurationElement; -import org.eclipse.core.runtime.IExtensionRegistry; -import org.eclipse.core.runtime.Platform; -import org.eclipse.swt.custom.BusyIndicator; -import org.eclipse.swt.dnd.Transfer; -import org.eclipse.swt.dnd.TransferData; -import org.eclipse.wst.sse.ui.internal.extension.DropActionProxy; -import org.eclipse.wst.sse.ui.internal.extension.RegistryReader; -import org.osgi.framework.Bundle; - - -/** - * Builds drop target transfers, drag source transfers, and drop actions - */ -public class TransferBuilder extends RegistryReader { - - public static final String ATT_CLASS = "class"; //$NON-NLS-1$ - public static final String ATT_ID = "id"; //$NON-NLS-1$ - public static final String ATT_METHOD = "method"; //$NON-NLS-1$ - public static final String ATT_PRIORITY = "priority"; //$NON-NLS-1$ - public static final String ATT_SINGLETON = "singleton"; //$NON-NLS-1$ - public static final String ATT_TARGET_ID = "targetID"; //$NON-NLS-1$ - public static final String ATT_TRANSFER_ID = "transferID"; //$NON-NLS-1$ - - private final static boolean debugTime = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.ui/transferbuilder/time")); //$NON-NLS-1$ //$NON-NLS-2$ - - public static final String PL_DRAG_SOURCE_TRANSFERS = "dragSourceTransfers"; //$NON-NLS-1$ - public static final String PL_DROP_TARGET_TRANSFERS = "dropTargetTransfers"; //$NON-NLS-1$ - - public static final String PLUGIN_ID = "org.eclipse.wst.sse.ui"; //$NON-NLS-1$ - - public static final String[] PRIORITIES = {"highest", "high", "mid", "low", "lowest"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ - - public static final String TAG_DRAG_SOURCE_CONTRIBUTION = "dragSourceContribution"; //$NON-NLS-1$ - public static final String TAG_DROP_ACTION = "dropAction"; //$NON-NLS-1$ - public static final String TAG_DROP_TARGET_CONTRIBUTION = "dropTargetContribution"; //$NON-NLS-1$ - - public static final String TAG_TRANSFER = "transfer"; //$NON-NLS-1$ - - public static final String TRUE = "true"; //$NON-NLS-1$ - - private boolean useProxy; - - class TransferProxyForDelayLoading extends Transfer { - private IConfigurationElement element; - private String classAttribute; - private Transfer proxy; - private Method getTypeIdsMethod, getTypeNamesMethod, javaToNativeMethod, nativeToJavaMethod; - - TransferProxyForDelayLoading() { - super(); - } - - TransferProxyForDelayLoading(IConfigurationElement elm, String clsAttr) { - super(); - this.element = elm; - this.classAttribute = clsAttr; - } - - private Transfer newInstance() { - if ((element != null) && (classAttribute != null)) { - Object o = createExtension(element, classAttribute); - if (o instanceof Transfer) { - element = null; - classAttribute = null; - return (Transfer)o; - } - } - return null; - } - - public TransferData[] getSupportedTypes() { - if (proxy == null) { - proxy = newInstance(); - } - if (proxy != null) { - return proxy.getSupportedTypes(); - } - return new TransferData[0]; - } - protected int[] getTypeIds() { - if (proxy == null) { - proxy = newInstance(); - } - if (proxy != null) { - if (getTypeIdsMethod == null) { - Class runtimeClass = proxy.getClass(); - NoSuchMethodException e = null; - while (runtimeClass != null) { - try { - getTypeIdsMethod = runtimeClass.getDeclaredMethod("getTypeIds", new Class[0]);//$NON-NLS-1$ - getTypeIdsMethod.setAccessible(true); - break; - } catch (NoSuchMethodException e1) { - e = e1; - runtimeClass = runtimeClass.getSuperclass(); - } catch (SecurityException e2) { - runtimeClass = runtimeClass.getSuperclass(); - } - } - if ((getTypeIdsMethod == null) && (e != null)) { - Logger.logException(e); - } - } - if (getTypeIdsMethod != null) { - try { - // changed Integer[] return type to int[] - int[] r = (int[])getTypeIdsMethod.invoke(proxy, new Object[0]); - if ((r != null) && (r.length > 0)) { - int[] ret = new int[r.length]; - for(int i = 0; i < r.length; i++) { - ret[i] = r[i]; - } - return ret; - } - } catch (IllegalAccessException e2) { - Logger.logException(e2); - } catch (InvocationTargetException e3) { - Logger.logException(e3); - } - } - } - return new int[0]; - } - protected String[] getTypeNames() { - if (proxy == null) { - proxy = newInstance(); - } - if (proxy != null) { - if (getTypeNamesMethod == null) { - Class runtimeClass = proxy.getClass(); - NoSuchMethodException e = null; - while (runtimeClass != null) { - try { - getTypeNamesMethod = runtimeClass.getDeclaredMethod("getTypeNames", new Class[0]);//$NON-NLS-1$ - getTypeNamesMethod.setAccessible(true); - break; - } catch (NoSuchMethodException e1) { - e = e1; - runtimeClass = runtimeClass.getSuperclass(); - } catch (SecurityException e2) { - runtimeClass = runtimeClass.getSuperclass(); - } - } - if ((getTypeNamesMethod == null) && (e != null)) { - Logger.logException(e); - } - } - if (getTypeNamesMethod != null) { - try { - return (String[])getTypeNamesMethod.invoke(proxy, new Object[0]); - } catch (IllegalAccessException e2) { - Logger.logException(e2); - } catch (InvocationTargetException e3) { - Logger.logException(e3); - } - } - } - return new String[0]; - } - public boolean isSupportedType(TransferData transferData) { - if (proxy == null) { - proxy = newInstance(); - } - if (proxy != null) { - return proxy.isSupportedType(transferData); - } - return false; - } - protected void javaToNative(Object object, TransferData transferData) { - if (proxy == null) { - proxy = newInstance(); - } - if (proxy != null) { - if (javaToNativeMethod == null) { - Class runtimeClass = proxy.getClass(); - NoSuchMethodException e = null; - while (runtimeClass != null) { - try { - javaToNativeMethod = runtimeClass.getDeclaredMethod("javaToNative", new Class[]{object.getClass(), transferData.getClass()});//$NON-NLS-1$ - javaToNativeMethod.setAccessible(true); - break; - } catch (NoSuchMethodException e1) { - e = e1; - runtimeClass = runtimeClass.getSuperclass(); - } catch (SecurityException e2) { - runtimeClass = runtimeClass.getSuperclass(); - } - } - if ((javaToNativeMethod == null) && (e != null)) { - Logger.logException(e); - } - } - if (javaToNativeMethod != null) { - try { - javaToNativeMethod.invoke(proxy, new Object[]{object, transferData}); - } catch (IllegalAccessException e2) { - Logger.logException(e2); - } catch (InvocationTargetException e3) { - Logger.logException(e3); - } - } - } - } - protected Object nativeToJava(TransferData transferData) { - if (proxy == null) { - proxy = newInstance(); - } - if (proxy != null) { - if (nativeToJavaMethod == null) { - Class runtimeClass = proxy.getClass(); - NoSuchMethodException e = null; - while (runtimeClass != null) { - try { - nativeToJavaMethod = runtimeClass.getDeclaredMethod("nativeToJava", new Class[]{transferData.getClass()});//$NON-NLS-1$ - nativeToJavaMethod.setAccessible(true); - break; - } catch (NoSuchMethodException e1) { - e = e1; - runtimeClass = runtimeClass.getSuperclass(); - } catch (SecurityException e2) { - runtimeClass = runtimeClass.getSuperclass(); - } - } - if ((nativeToJavaMethod == null) && (e != null)) { - Logger.logException(e); - } - } - if (nativeToJavaMethod != null) { - try { - return nativeToJavaMethod.invoke(proxy, new Object[]{transferData}); - } catch (IllegalAccessException e2) { - Logger.logException(e2); - } catch (InvocationTargetException e3) { - Logger.logException(e3); - } - } - } - return new Object(); - } - Transfer getTransferClass() { - if (proxy == null) { - proxy = newInstance(); - } - return proxy; - } - } - /** - * @param element - * @param classAttribute - * @return Object - * @throws CoreException - */ - static Object createExecutableExtension(final IConfigurationElement element, final String classAttribute) throws CoreException { - - Object obj = null; - - String singleton = element.getAttribute(ATT_SINGLETON); - String method = element.getAttribute(ATT_METHOD); - if (TRUE.equalsIgnoreCase(singleton) && method != null) { - try { - String name = element.getAttribute(ATT_CLASS); - String pluginId = element.getDeclaringExtension().getNamespace(); - Class cls = Platform.getBundle(pluginId).loadClass(name); - Method mtd = cls.getMethod(method, new Class[]{}); - - obj = mtd.invoke(null, null); - } catch (ClassNotFoundException e) { - obj = null; - } catch (NoSuchMethodException e) { - obj = null; - } catch (IllegalAccessException e) { - obj = null; - } catch (InvocationTargetException e) { - obj = null; - } - } else { - obj = element.createExecutableExtension(classAttribute); - } - - return obj; - } - - /** - * Creates an extension. If the extension plugin has not been loaded a - * busy cursor will be activated during the duration of the load. - * - * @param element - * @param classAttribute - * @return Object - * @throws CoreException - */ - public static Object createExtension(final IConfigurationElement element, final String classAttribute) { - // If plugin has been loaded create extension. - // Otherwise, show busy cursor then create extension. - final Object[] result = new Object[1]; - String pluginId = element.getDeclaringExtension().getNamespace(); - Bundle bundle = Platform.getBundle(pluginId); - if (bundle.getState() == Bundle.ACTIVE) { - try { - return createExecutableExtension(element, classAttribute); - } catch (CoreException e) { - handleCreateExecutableException(result, e); - } - } else { - BusyIndicator.showWhile(null, new Runnable() { - public void run() { - try { - result[0] = createExecutableExtension(element, classAttribute); - } catch (Exception e) { - handleCreateExecutableException(result, e); - } - } - }); - } - return result[0]; - } - - /** - * @param result - * @param e - */ - protected static void handleCreateExecutableException(Object[] result, Throwable e) { - Logger.logException(e); - result[0] = null; - - } - - protected List cache; - protected String targetContributionTag; - - protected List targetIDs; - - /** - * @param element - * @return IDropAction - */ - protected IDropAction createDropAction(IConfigurationElement element) { - Object obj = null; - obj = createExtension(element, ATT_CLASS); - if (obj == null) - return null; - return (obj instanceof IDropAction) ? (IDropAction) DropActionProxy.newInstance(obj) : null; - } - - /** - * @param transferId - * @return IDropAction[] - */ - protected IDropAction[] createDropActions(String transferId) { - if (cache == null) - return new IDropAction[0]; - - final int num = cache.size(); - if (num == 0) - return new IDropAction[0]; - - IDropAction[] as = new IDropAction[num]; - int j = 0; - for (int p = 0; p < PRIORITIES.length; p++) { - for (int i = 0; i < num; i++) { - Object obj = cache.get(i); - if (!(obj instanceof IConfigurationElement)) - continue; - - IConfigurationElement element = (IConfigurationElement) obj; - if (!(TAG_DROP_ACTION.equals(element.getName())) || !(transferId.equals(element.getAttribute(ATT_TRANSFER_ID)))) - continue; - - if (PRIORITIES[p].equals(element.getAttribute(ATT_PRIORITY)) || (p == 2 && element.getAttribute(ATT_PRIORITY) == null)) { - IDropAction a = createDropAction(element); - if (a != null) { - as[j] = a; - j++; - } - } - } - } - - if (num == j) - return as; - - IDropAction[] as2 = new IDropAction[j]; - for (int i = 0; i < j; i++) { - as2[i] = as[i]; - } - - return as2; - } - - /** - * @param element - * @return Transfer - */ - protected Transfer createTransfer(IConfigurationElement element) { - Object obj = null; - if (useProxy) { - obj = new TransferProxyForDelayLoading(element, ATT_CLASS); - } else { - obj = createExtension(element, ATT_CLASS); - } - if (obj == null) - return null; - return (obj instanceof Transfer) ? (Transfer) obj : null; - } - - /** - * @return Transfer[] - */ - protected Transfer[] createTransfers() { - if (cache == null) - return new Transfer[0]; - - final int num = cache.size(); - if (num == 0) - return new Transfer[0]; - - Transfer[] ts = new Transfer[num]; - int j = 0; - for (int p = 0; p < PRIORITIES.length; p++) { - for (int i = 0; i < num; i++) { - Object obj = cache.get(i); - if (!(obj instanceof IConfigurationElement)) - continue; - - IConfigurationElement element = (IConfigurationElement) obj; - if (!TAG_TRANSFER.equals(element.getName())) - continue; - - if (PRIORITIES[p].equals(element.getAttribute(ATT_PRIORITY)) || (p == 2 && element.getAttribute(ATT_PRIORITY) == null)) { - Transfer t = createTransfer(element); - if (t != null) { - ts[j] = t; - j++; - } - } - } - } - - if (num == j) - return ts; - - Transfer[] ts2 = new Transfer[j]; - for (int i = 0; i < j; i++) { - ts2[i] = ts[i]; - } - - return ts2; - } - - /** - * @param editorId - * @return Transfer[] - */ - public Transfer[] getDragSourceTransfers(String editorId) { - return getDragSourceTransfers(new String[]{editorId}); - } - - /** - * @param editorIds - * @return Transfer[] - */ - public Transfer[] getDragSourceTransfers(String[] editorIds) { - long time0 = System.currentTimeMillis(); - readContributions(editorIds, TAG_DRAG_SOURCE_CONTRIBUTION, PL_DRAG_SOURCE_TRANSFERS); - Transfer[] transfers = createTransfers(); - if (debugTime) - System.out.println(getClass().getName() + "#getDragSourceTransfers(" + editorIds + "): " + transfers.length + " transfers created in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ - return transfers; - } - - /** - * @deprecated use getDropActions(String editorId, Transfer transfer) for the performance - * @param editorId - * @param className - * @return IDropAction[] - */ - public IDropAction[] getDropActions(String editorId, String transferClassName) { - return getDropActions(new String[]{editorId}, transferClassName); - } - - /** - * @param editorId - * @param class - * @return IDropAction[] - */ - public IDropAction[] getDropActions(String editorId, Transfer transfer) { - return getDropActions(new String[]{editorId}, transfer); - } - /** - * @deprecated use getDropActions(String[] editorIds, Transfer transfer) for the performance - * @param editorId - * @param className - * @return IDropAction[] - */ - public IDropAction[] getDropActions(String[] editorIds, String transferClassName) { - long time0 = System.currentTimeMillis(); - readContributions(editorIds, TAG_DROP_TARGET_CONTRIBUTION, PL_DROP_TARGET_TRANSFERS); - String transferId = getTransferIdOfClassName(transferClassName); - IDropAction[] actions = createDropActions(transferId); - if (debugTime) - System.out.println(getClass().getName() + "#getDropActions(" + editorIds + "): " + actions.length + " drop actions created in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ - return actions; - } - - /** - * @param editorId - * @param class - * @return IDropAction[] - */ - public IDropAction[] getDropActions(String[] editorIds, Transfer transfer) { - String transferClassName; - if (transfer instanceof TransferProxyForDelayLoading) { - transferClassName = ((TransferProxyForDelayLoading)transfer).getTransferClass().getClass().getName(); - } else { - transferClassName = transfer.getClass().getName(); - } - return getDropActions(editorIds, transferClassName); - } - /** - * @param editorId - * @return Transfer[] - */ - public Transfer[] getDropTargetTransfers(String editorId) { - return getDropTargetTransfers(new String[]{editorId}); - } - - /** - * @param editorIds - * @return Transfer[] - */ - public Transfer[] getDropTargetTransfers(String[] editorIds) { - long time0 = System.currentTimeMillis(); - readContributions(editorIds, TAG_DROP_TARGET_CONTRIBUTION, PL_DROP_TARGET_TRANSFERS); - Transfer[] transfers = createTransfers(); - if (debugTime) { - String idlist = ""; //$NON-NLS-1$ - if (editorIds.length > 0) { - for (int i = 0; i < editorIds.length; i++) { - idlist += editorIds[i]; - if (i < editorIds.length - 1) - idlist += ","; //$NON-NLS-1$ - } - } - System.out.println(getClass().getName() + "#getDropTargetTransfers(" + idlist + "): " + transfers.length + " transfers created in " + (System.currentTimeMillis() - time0) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ - } - return transfers; - } - - /** - * Returns the name of the part ID attribute that is expected in the - * target extension. - * - * @param element - * @return String - */ - protected String getTargetID(IConfigurationElement element) { - String value = element.getAttribute(ATT_TARGET_ID); - return value != null ? value : "???"; //$NON-NLS-1$ - } - - /** - * @param className - * @return String - */ - private String getTransferIdOfClassName(String className) { - String id = ""; //$NON-NLS-1$ - final int num = cache.size(); - if (className == null || cache == null || num == 0) - return id; - - for (int i = 0; i < num; i++) { - Object obj = cache.get(i); - if (obj instanceof IConfigurationElement) { - IConfigurationElement element = (IConfigurationElement) obj; - if (className.equals(element.getAttribute(ATT_CLASS))) { - id = element.getAttribute(ATT_ID); - break; - } - } - } - - return (id.length() != 0 ? id : className); - } - - /** - * Reads the contributions from the registry for the provided workbench - * part and the provided extension point ID. - * - * @param id - * @param tag - * @param extensionPoint - */ - protected void readContributions(String[] ids, String tag, String extensionPoint) { - cache = null; - targetIDs = Arrays.asList(ids); - targetContributionTag = tag; - IExtensionRegistry registry = Platform.getExtensionRegistry(); - readRegistry(registry, PLUGIN_ID, extensionPoint); - } - - protected boolean readElement(IConfigurationElement element) { - String tag = element.getName(); - if (tag.equals(targetContributionTag)) { - String id = getTargetID(element); - if (id == null || !targetIDs.contains(id)) { - // This is not of interest to us - don't go deeper - return true; - } - } else if (tag.equals(TAG_TRANSFER)) { - if (cache == null) - cache = new ArrayList(); - cache.add(element); - return true; // just cache the element - don't go into it - } else if (tag.equals(TAG_DROP_ACTION)) { - if (cache == null) - cache = new ArrayList(); - //cache.add(createActionDescriptor(element)); - cache.add(element); - return true; // just cache the action - don't go into - } else { - return false; - } - - readElementChildren(element); - return true; - } - /** - * @deprecated - use TransferBuilder(boolean useProxy) for the performance - */ - public TransferBuilder() { - this(false); - } - - public TransferBuilder(boolean useProxy) { - super(); - this.useProxy = useProxy; - } -} |