+++ /dev/null
-/*
- * (c) Copyright IBM Corp. 2000, 2001.
- * All Rights Reserved.
- */
-package net.sourceforge.phpdt.internal.ui.util;
-
-
-import org.eclipse.jface.dialogs.IDialogConstants;
-import org.eclipse.jface.util.Assert;
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.dnd.DragSource;
-import org.eclipse.swt.dnd.DropTarget;
-import org.eclipse.swt.layout.GridData;
-import org.eclipse.swt.widgets.Button;
-import org.eclipse.swt.widgets.Caret;
-import org.eclipse.swt.widgets.Control;
-import org.eclipse.swt.widgets.Display;
-import org.eclipse.swt.widgets.Menu;
-import org.eclipse.swt.widgets.ScrollBar;
-import org.eclipse.swt.widgets.Shell;
-import org.eclipse.swt.widgets.Widget;
-
-/**
- * Utility class to simplify access to some SWT resources.
- */
-public class SWTUtil {
-
- /**
- * Returns the standard display to be used. The method first checks, if
- * the thread calling this method has an associated disaply. If so, this
- * display is returned. Otherwise the method returns the default display.
- */
- public static Display getStandardDisplay() {
- Display display;
- display= Display.getCurrent();
- if (display == null)
- display= Display.getDefault();
- return display;
- }
-
- /**
- * Returns the shell for the given widget. If the widget doesn't represent
- * a SWT object that manage a shell, <code>null</code> is returned.
- *
- * @return the shell for the given widget
- */
- public static Shell getShell(Widget widget) {
- if (widget instanceof Control)
- return ((Control)widget).getShell();
- if (widget instanceof Caret)
- return ((Caret)widget).getParent().getShell();
- if (widget instanceof DragSource)
- return ((DragSource)widget).getControl().getShell();
- if (widget instanceof DropTarget)
- return ((DropTarget)widget).getControl().getShell();
- if (widget instanceof Menu)
- return ((Menu)widget).getParent().getShell();
- if (widget instanceof ScrollBar)
- return ((ScrollBar)widget).getParent().getShell();
-
- return null;
- }
-
-
- /**
- * Returns a width hint for a button control.
- */
- public static int getButtonWidthHint(Button button) {
- PixelConverter converter= new PixelConverter(button);
- int widthHint= converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
- return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
- }
-
- /**
- * Returns a height hint for a button control.
- */
- public static int getButtonHeigthHint(Button button) {
- PixelConverter converter= new PixelConverter(button);
- return converter.convertVerticalDLUsToPixels(IDialogConstants.BUTTON_HEIGHT);
- }
-
-
- /**
- * Sets width and height hint for the button control.
- * <b>Note:</b> This is a NOP if the button's layout data is not
- * an instance of <code>GridData</code>.
- *
- * @param the button for which to set the dimension hint
- */
- public static void setButtonDimensionHint(Button button) {
- Assert.isNotNull(button);
- Object gd= button.getLayoutData();
- if (gd instanceof GridData) {
- ((GridData)gd).heightHint= getButtonHeigthHint(button);
- ((GridData)gd).widthHint= getButtonWidthHint(button);
- }
- }
-
-
-}
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