Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2010 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.texteditor; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.ScrolledComposite; import org.eclipse.swt.custom.StyledText; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.PropertyChangeEvent; /** * A form consisting of a title, a banner, and an info text. Banner and info text are * separated by a separator line. This form must be handled like an SWT widget. * * @since 2.0 * @deprecated since 3.0. there is no replacement, use org.eclipse.ui.forms to define a component with a similar look and function. */ public class InfoForm { /** The form's root widget */ private ScrolledComposite fScrolledComposite; /** The background color */ private Color fBackgroundColor; /** The foreground color */ private Color fForegroundColor; /** The separator's color */ private Color fSeparatorColor; /** The form header */ private Label fHeader; /** The form banner */ private Label fBanner; /** The form text */ private StyledText fText; /** The preference change listener */ private IPropertyChangeListener fPropertyChangeListener; /** * Creates a new info form. * @param parent the parent composite */ public InfoForm(Composite parent) { Display display = parent.getDisplay(); fBackgroundColor = display.getSystemColor(SWT.COLOR_LIST_BACKGROUND); fForegroundColor = display.getSystemColor(SWT.COLOR_LIST_FOREGROUND); fSeparatorColor = new Color(display, 152, 170, 203); fPropertyChangeListener = new IPropertyChangeListener() { public void propertyChange(PropertyChangeEvent event) { handlePropertyChange(event); } }; JFaceResources.getFontRegistry().addListener(fPropertyChangeListener); fScrolledComposite = new ScrolledComposite(parent, SWT.H_SCROLL | SWT.V_SCROLL); fScrolledComposite.setAlwaysShowScrollBars(false); fScrolledComposite.setExpandHorizontal(true); fScrolledComposite.setExpandVertical(true); fScrolledComposite.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent e) { JFaceResources.getFontRegistry().removeListener(fPropertyChangeListener); fScrolledComposite = null; fSeparatorColor.dispose(); fSeparatorColor = null; fHeader = null; fBanner = null; fText = null; } }); Composite composite = createComposite(fScrolledComposite); composite.setLayout(new GridLayout()); fHeader = createHeader(composite, null); createLabel(composite, null); createLabel(composite, null); fBanner = createBanner(composite, null); Composite separator = createCompositeSeparator(composite); GridData data = new GridData(GridData.FILL_HORIZONTAL); data.heightHint = 2; separator.setLayoutData(data); fText = createText(composite, null); createLabel(composite, null); fScrolledComposite.setContent(composite); fScrolledComposite.setMinSize(composite.computeSize(SWT.DEFAULT, SWT.DEFAULT)); createActionControls(composite); } /** * Hook method for creating an appropriate action control. * @param parent the action control's parent control */ protected void createActionControls(Composite parent) { } /** * Returns the control of this form. * @return the root control of this form */ public Control getControl() { return fScrolledComposite; } /** * Sets the header text of this info form. * @param header the header text */ public void setHeaderText(String header) { fHeader.setText(header); } /** * Sets the banner text of this info form. * @param banner the banner text */ public void setBannerText(String banner) { fBanner.setText(banner); } /** * Sets the info of this info form * @param info the info text */ public void setInfo(String info) { fText.setText(info); } /** * Handles the property change. * * @param event the property change event object describing which property changed and how */ protected void handlePropertyChange(PropertyChangeEvent event) { if (fHeader != null) fHeader.setFont(JFaceResources.getHeaderFont()); if (fBanner != null) fBanner.setFont(JFaceResources.getBannerFont()); Control control = fScrolledComposite.getContent(); fScrolledComposite.setMinSize(control.computeSize(SWT.DEFAULT, SWT.DEFAULT)); fScrolledComposite.setContent(control); fScrolledComposite.layout(true); fScrolledComposite.redraw(); } /* * @see org.eclipse.update.ui.forms.internal.FormWidgetFactory#createComposite(Composite) */ private Composite createComposite(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setBackground(fBackgroundColor); return composite; } /* * @see org.eclipse.update.ui.forms.internal.FormWidgetFactory#createCompositeSeparator(Composite) */ private Composite createCompositeSeparator(Composite parent) { Composite composite = new Composite(parent, SWT.NO_FOCUS); composite.setBackground(fSeparatorColor); return composite; } /* * @see org.eclipse.update.ui.forms.internal.FormWidgetFactory#createLabel(Composite, String) */ private Label createLabel(Composite parent, String text) { Label label = new Label(parent, SWT.NONE); GridData data = new GridData(GridData.FILL_HORIZONTAL); label.setLayoutData(data); if (text != null) label.setText(text); label.setBackground(fBackgroundColor); label.setForeground(fForegroundColor); return label; } private StyledText createText(Composite parent, String text) { StyledText widget = new StyledText(parent, SWT.READ_ONLY | SWT.MULTI); GridData data = new GridData(GridData.FILL_HORIZONTAL); widget.setLayoutData(data); if (text != null) widget.setText(text); widget.setBackground(fBackgroundColor); widget.setForeground(fForegroundColor); widget.setCaret(null); return widget; } /* * @see org.eclipse.update.ui.forms.internal.FormWidgetFactory#createHeader(Composite, String) */ private Label createHeader(Composite parent, String text) { Label label = new Label(parent, SWT.NONE); GridData data = new GridData(GridData.FILL_HORIZONTAL); label.setLayoutData(data); if (text != null) label.setText(text); label.setBackground(fBackgroundColor); label.setForeground(fForegroundColor); label.setFont(JFaceResources.getHeaderFont()); return label; } /* * @see org.eclipse.update.ui.forms.internal.FormWidgetFactory#createBanner(Composite, String) */ private Label createBanner(Composite parent, String text) { Label label = new Label(parent, SWT.NONE); if (text != null) label.setText(text); label.setBackground(fBackgroundColor); label.setForeground(fForegroundColor); label.setFont(JFaceResources.getBannerFont()); return label; } }