| /******************************************************************************* |
| * 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.util; |
| |
| |
| import com.ibm.icu.util.StringTokenizer; |
| |
| import org.eclipse.jface.action.Action; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.RGB; |
| |
| /** |
| * Helpful methods to be used with the Source Editor |
| */ |
| public class EditorUtility { |
| |
| /** |
| * Appends to modifier string of the given SWT modifier bit to the given |
| * modifierString. |
| * |
| * @param modifierString |
| * the modifier string |
| * @param modifier |
| * an int with SWT modifier bit |
| * @return the concatenated modifier string |
| */ |
| private static String appendModifierString(String modifierString, int modifier) { |
| if (modifierString == null) |
| modifierString = ""; //$NON-NLS-1$ |
| String newModifierString = Action.findModifierString(modifier); |
| if (modifierString.length() == 0) |
| return newModifierString; |
| return modifierString + " + " + newModifierString; //$NON-NLS-1$ |
| } |
| |
| /** |
| * Computes the state mask for the given modifier string. |
| * |
| * @param modifiers |
| * the string with the modifiers, separated by '+', '-', ';', |
| * ',' or '.' |
| * @return the state mask or -1 if the input is invalid |
| */ |
| public static int computeStateMask(String modifiers) { |
| if (modifiers == null) |
| return -1; |
| |
| if (modifiers.length() == 0) |
| return SWT.NONE; |
| |
| int stateMask = 0; |
| StringTokenizer modifierTokenizer = new StringTokenizer(modifiers, ",;.:+-* "); //$NON-NLS-1$ |
| while (modifierTokenizer.hasMoreTokens()) { |
| int modifier = EditorUtility.findLocalizedModifier(modifierTokenizer.nextToken()); |
| if (modifier == 0 || (stateMask & modifier) == modifier) |
| return -1; |
| stateMask = stateMask | modifier; |
| } |
| return stateMask; |
| } |
| |
| /** |
| * Maps the localized modifier name to a code in the same manner as |
| * #findModifier. |
| * |
| * @return the SWT modifier bit, or <code>0</code> if no match was found |
| * @see findModifier |
| */ |
| public static int findLocalizedModifier(String token) { |
| if (token == null) |
| return 0; |
| |
| if (token.equalsIgnoreCase(Action.findModifierString(SWT.CTRL))) |
| return SWT.CTRL; |
| if (token.equalsIgnoreCase(Action.findModifierString(SWT.SHIFT))) |
| return SWT.SHIFT; |
| if (token.equalsIgnoreCase(Action.findModifierString(SWT.ALT))) |
| return SWT.ALT; |
| if (token.equalsIgnoreCase(Action.findModifierString(SWT.COMMAND))) |
| return SWT.COMMAND; |
| |
| return 0; |
| } |
| |
| /** |
| * Temporary method to help migrate from using StructuredTextColors to |
| * using base ColorRegistry. Instead of using symbolic names in the color |
| * registry, we are currently mapping the rgb.toString value to |
| * corresponding color. |
| * |
| * @param rgb |
| * @return Color |
| */ |
| public static Color getColor(RGB rgb) { |
| if (rgb == null) |
| return null; |
| |
| // get the color from the platform color registry |
| Color color = JFaceResources.getColorRegistry().get(rgb.toString()); |
| |
| // if the platform color registry does not have this color yet, add to |
| // the registry |
| if (color == null) { |
| JFaceResources.getColorRegistry().put(rgb.toString(), rgb); |
| color = JFaceResources.getColorRegistry().get(rgb.toString()); |
| } |
| return color; |
| } |
| |
| /** |
| * Returns the modifier string for the given SWT modifier modifier bits. |
| * |
| * @param stateMask |
| * the SWT modifier bits |
| * @return the modifier string |
| */ |
| public static String getModifierString(int stateMask) { |
| String modifierString = ""; //$NON-NLS-1$ |
| if ((stateMask & SWT.CTRL) == SWT.CTRL) |
| modifierString = appendModifierString(modifierString, SWT.CTRL); |
| if ((stateMask & SWT.ALT) == SWT.ALT) |
| modifierString = appendModifierString(modifierString, SWT.ALT); |
| if ((stateMask & SWT.SHIFT) == SWT.SHIFT) |
| modifierString = appendModifierString(modifierString, SWT.SHIFT); |
| if ((stateMask & SWT.COMMAND) == SWT.COMMAND) |
| modifierString = appendModifierString(modifierString, SWT.COMMAND); |
| |
| return modifierString; |
| } |
| } |