/*******************************************************************************
* Copyright (c) 2000, 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
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.dialogs;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.internal.WorkbenchPlugin;
import org.eclipse.ui.internal.misc.StatusUtil;
import org.eclipse.ui.statushandlers.StatusManager;
/**
* Utility class to help with dialogs.
* <p>
* Note that a copy of this class exists in the
* org.eclipse.ui.internal.ide package.
* </p>
*/
public class DialogUtil {
/**
* Prevent instantiation.
*/
private DialogUtil() {
}
/**
* Open an error style dialog for PartInitException by
* including any extra information from the nested
* CoreException if present.
*/
public static void openError(Shell parent, String title, String message,
PartInitException exception) {
// Check for a nested CoreException
CoreException nestedException = null;
IStatus status = exception.getStatus();
if (status != null && status.getException() instanceof CoreException) {
nestedException = (CoreException) status.getException();
}
IStatus errorStatus = null;
if (nestedException != null) {
// Open an error dialog and include the extra
// status information from the nested CoreException
errorStatus = StatusUtil.newStatus(nestedException.getStatus(),
message);
} else {
// Open a regular error dialog since there is no
// extra information to displa
errorStatus = new Status(IStatus.ERROR,
WorkbenchPlugin.PI_WORKBENCH, message);
}
StatusUtil.handleStatus(errorStatus, StatusManager.SHOW, parent);
}
/**
* Removes the '&' accelerator indicator from a label, if any. Also removes
* the () accelerators which are used in Asian languages.
*/
public static String removeAccel(String label) {
int startBracket = label.indexOf("(&"); //$NON-NLS-1$
//Non latin accelerator?
if (startBracket >= 0) {
int endBracket = label.indexOf(')');
//If there is more than one character it is not an accelerator
if ((endBracket - startBracket) == 3) {
return label.substring(0, startBracket)
+ label.substring(endBracket + 1);
}
}
int i = label.indexOf('&');
if (i >= 0) {
label = label.substring(0, i) + label.substring(i + 1);
}
return label;
}
/**
* Return the number of rows available in the current display using the
* current font.
* @param parent The Composite whose Font will be queried.
* @return int The result of the display size divided by the font size.
*/
public static int availableRows(Composite parent) {
int fontHeight = (parent.getFont().getFontData())[0].getHeight();
int displayHeight = parent.getDisplay().getClientArea().height;
return displayHeight / fontHeight;
}
/**
* Return whether or not the font in the parent is the size of a result
* font (i.e. smaller than the High Contrast Font). This method is used to
* make layout decisions based on screen space.
* @param parent The Composite whose Font will be queried.
* @return boolean. True if there are more than 50 lines of possible
* text in the display.
*/
public static boolean inRegularFontMode(Composite parent) {
return availableRows(parent) > 50;
}
}