Bug 564144 - Removes

org/eclipse/ui/internal/menus/WidgetProxy.java

Full text search also showed no usage

Change-Id: I89143e9128a8aa40efc4ee66dfa9e28bda592b05
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>

1 files changed, 0 insertions, 209 deletions

diff --git a/bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/menus/WidgetProxy.java b/bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/menus/WidgetProxy.java
deleted file mode 100644
index d9d62b70a20..00000000000
--- a/bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/menus/WidgetProxy.java
+++ /dev/null
@@ -1,209 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2015 IBM Corporation and others.
- *
- * This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License 2.0
- * which accompanies this distribution, and is available at
- * https://www.eclipse.org/legal/epl-2.0/
- *
- * SPDX-License-Identifier: EPL-2.0
- *
- * Contributors:
- *     IBM Corporation - initial API and implementation
- *******************************************************************************/
-
-package org.eclipse.ui.internal.menus;
-
-import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.runtime.IConfigurationElement;
-import org.eclipse.core.runtime.IStatus;
-import org.eclipse.core.runtime.Status;
-import org.eclipse.swt.widgets.Composite;
-import org.eclipse.swt.widgets.CoolBar;
-import org.eclipse.swt.widgets.Menu;
-import org.eclipse.swt.widgets.ToolBar;
-import org.eclipse.ui.IWorkbenchWindow;
-import org.eclipse.ui.internal.WorkbenchPlugin;
-import org.eclipse.ui.menus.AbstractWorkbenchTrimWidget;
-import org.eclipse.ui.menus.IWorkbenchWidget;
-
-/**
- * <p>
- * A proxy for a widget that has been defined in XML. This delays the class
- * loading until the widget is really asked to fill a menu collection. Asking
- * the widget for anything will instantiate the class.
- * </p>
- *
- * @since 3.2
- */
-final class WidgetProxy implements IWorkbenchWidget {
-
-	/**
-	 * Used to determine whether the load has been tried to prevent multiple retries
-	 * at a failed load.
-	 */
-	private boolean firstLoad = true;
-
-	/**
-	 * The configuration element from which the widget can be created. This value
-	 * will exist until the element is converted into a real class -- at which point
-	 * this value will be set to <code>null</code>.
-	 */
-	private IConfigurationElement configurationElement;
-
-	/**
-	 * The real widget. This value is <code>null</code> until the proxy is forced to
-	 * load the real widget. At this point, the configuration element is converted,
-	 * nulled out, and this widget gains a reference.
-	 */
-	private IWorkbenchWidget widget = null;
-
-	/**
-	 * The name of the configuration element attribute which contains the
-	 * information necessary to instantiate the real widget.
-	 */
-	private final String widgetAttributeName;
-
-	/**
-	 * Constructs a new instance of <code>WidgetProxy</code> with all the
-	 * information it needs to try to load the class at a later point in time.
-	 *
-	 * @param configurationElement The configuration element from which the real
-	 *                             class can be loaded at run-time; must not be
-	 *                             <code>null</code>.
-	 * @param widgetAttributeName  The name of the attibute or element containing
-	 *                             the widget executable extension; must not be
-	 *                             <code>null</code>.
-	 */
-	public WidgetProxy(final IConfigurationElement configurationElement, final String widgetAttributeName) {
-		if (configurationElement == null) {
-			throw new NullPointerException("The configuration element backing a widget proxy cannot be null"); //$NON-NLS-1$
-		}
-
-		if (widgetAttributeName == null) {
-			throw new NullPointerException("The attribute containing the widget class must be known"); //$NON-NLS-1$
-		}
-
-		this.configurationElement = configurationElement;
-		this.widgetAttributeName = widgetAttributeName;
-	}
-
-	@Override
-	public void dispose() {
-		if (loadWidget()) {
-			widget.dispose();
-		}
-	}
-
-	@Override
-	public void fill(final Composite parent) {
-		if (loadWidget()) {
-			widget.fill(parent);
-		}
-	}
-
-	@Override
-	public void fill(final CoolBar parent, final int index) {
-		if (loadWidget()) {
-			widget.fill(parent, index);
-		}
-	}
-
-	@Override
-	public void fill(final Menu parent, final int index) {
-		if (loadWidget()) {
-			widget.fill(parent, index);
-		}
-	}
-
-	@Override
-	public void fill(final ToolBar parent, final int index) {
-		if (loadWidget()) {
-			widget.fill(parent, index);
-		}
-	}
-
-	@Override
-	public void init(IWorkbenchWindow workbenchWindow) {
-		if (loadWidget()) {
-			widget.init(workbenchWindow);
-		}
-	}
-
-	/**
-	 * Convenience method that allows the trim layout manager to inform widgets if
-	 * they have changed locations. If the IWidget implementation does not support
-	 * the method then we default to using the simpler
-	 * <code>fill(final Composite parent)</code>.
-	 *
-	 * @param parent  The composite to create the controls in
-	 * @param oldSide The side the trim was previously displayed on
-	 * @param newSide The new side that the trim will be displayed on
-	 */
-	public void fill(Composite parent, int oldSide, int newSide) {
-		if (loadWidget()) {
-			if (isMoveableTrimWidget()) {
-				((AbstractWorkbenchTrimWidget) widget).fill(parent, oldSide, newSide);
-			} else {
-				widget.fill(parent);
-			}
-		}
-	}
-
-	/**
-	 * Loads the widget, if possible. If the widget is loaded, then the member
-	 * variables are updated accordingly.
-	 *
-	 * @return <code>true</code> if the widget is now non-null; <code>false</code>
-	 *         otherwise.
-	 */
-	private boolean loadWidget() {
-		if (firstLoad) {
-			// Load the handler.
-			try {
-				widget = (IWorkbenchWidget) configurationElement.createExecutableExtension(widgetAttributeName);
-				configurationElement = null;
-			} catch (final ClassCastException e) {
-				final String message = "The proxied widget was the wrong class"; //$NON-NLS-1$
-				final IStatus status = new Status(IStatus.ERROR, WorkbenchPlugin.PI_WORKBENCH, 0, message, e);
-				WorkbenchPlugin.log(message, status);
-
-			} catch (final CoreException e) {
-				final String message = "The proxied widget for '" //$NON-NLS-1$
-						+ configurationElement.getAttribute(widgetAttributeName) + "' could not be loaded"; //$NON-NLS-1$
-				IStatus status = new Status(IStatus.ERROR, WorkbenchPlugin.PI_WORKBENCH, 0, message, e);
-				WorkbenchPlugin.log(message, status);
-			}
-		}
-
-		// We're througth the first load
-		firstLoad = false;
-
-		// the load only succeeded if there's a widget..
-		return widget != null;
-	}
-
-	/**
-	 * Determine if the widget knows how to respond to changes in the workbench
-	 * 'side' that it is being displayed on.
-	 *
-	 * @return <code>true</code> iff the <code>IWidget</code> implementation is
-	 *         actually based on <code>AbstractTrimWidget</code>
-	 */
-	private boolean isMoveableTrimWidget() {
-		if (loadWidget()) {
-			return widget instanceof AbstractWorkbenchTrimWidget;
-		}
-
-		return false;
-	}
-
-	@Override
-	public String toString() {
-		if (widget == null) {
-			return configurationElement.getAttribute(widgetAttributeName);
-		}
-
-		return widget.toString();
-	}
-}