| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.jsf.common.ui.internal.dialogfield; |
| |
| import org.eclipse.jface.dialogs.Dialog; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.FontMetrics; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Text; |
| import org.eclipse.ui.forms.widgets.FormToolkit; |
| |
| /** |
| * A layout utility class |
| * |
| */ |
| public final class LayoutUtil { |
| // The Text control looks higher then Button control when they have the same |
| // height, |
| // Increasing the height of 5 pixels will make them looks the same height. |
| private final static int BUTTON_HEIGHT_ADJUSTMENT = 5; |
| |
| |
| /** |
| * @param control |
| * @param grab |
| */ |
| public static void setGrabHorizontal(Control control, boolean grab) { |
| Object ld = control.getLayoutData(); |
| if (ld instanceof GridData) { |
| ((GridData) ld).grabExcessHorizontalSpace = grab; |
| } |
| } |
| |
| /** |
| * Sets the width hint of a control. Assumes that GridData is used. |
| * @param control |
| * @param widthHint |
| */ |
| public static void setWidthHint(Control control, int widthHint) { |
| Object ld = control.getLayoutData(); |
| if (ld instanceof GridData) { |
| ((GridData) ld).widthHint = widthHint; |
| } |
| } |
| |
| |
| /** |
| * Sets the horizontal indent of a control. Assumes that GridData is used. |
| * @param control |
| * @param horizontalIndent |
| */ |
| static void setHorizontalIndent(Control control, int horizontalIndent) { |
| Object ld = control.getLayoutData(); |
| if (ld instanceof GridData) { |
| ((GridData) ld).horizontalIndent = horizontalIndent; |
| } |
| } |
| |
| /** |
| * Sets the horizontal indent of a control. Assumes that GridData is used. |
| * @param control |
| */ |
| public static void setHorizontalGrabbing(Control control) { |
| Object ld = control.getLayoutData(); |
| if (ld instanceof GridData) { |
| ((GridData) ld).grabExcessHorizontalSpace = true; |
| } |
| } |
| |
| /** |
| * Returns a width hint for a button control. |
| * @param button |
| * @return the hint value |
| */ |
| static int getButtonWidthHint(Button button) { |
| if (button.getFont().equals(JFaceResources.getDefaultFont())) |
| button.setFont(JFaceResources.getDialogFont()); |
| |
| GC gc = new GC(button); |
| gc.setFont(button.getFont()); |
| FontMetrics fontMetrics = gc.getFontMetrics(); |
| gc.dispose(); |
| |
| int length = button.getText().length(); |
| int widthHint = Dialog.convertWidthInCharsToPixels(fontMetrics, |
| length < 2 ? 2 : length); |
| return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, |
| true).x); |
| } |
| |
| static int getButtonHeightHint(FormToolkit toolkit, Text text) { |
| if (toolkit != null) { |
| return text.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).y |
| + BUTTON_HEIGHT_ADJUSTMENT; |
| } |
| return text.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).y; |
| } |
| |
| private LayoutUtil() |
| { |
| // static utility class; no instantiation |
| } |
| } |