abstract class for implementing a tab folder control

block of ICOptionPages.

core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/TabFolderOptionBlock.java

@@ -0,0 +1,163 @@
+package org.eclipse.cdt.ui;
+/***********************************************************************
+ * Copyright (c) 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v0.5 
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v05.html
+ * 
+ * Contributors:
+ * QNX Software Systems - Initial API and implementation
+***********************************************************************/
+
+import java.util.ArrayList;
+import java.util.Iterator;
+
+import org.eclipse.cdt.utils.ui.controls.TabFolderLayout;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.NullProgressMonitor;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.graphics.Image;
+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.Label;
+import org.eclipse.swt.widgets.TabFolder;
+import org.eclipse.swt.widgets.TabItem;
+
+public abstract class TabFolderOptionBlock {
+	private String fErrorMessage;
+	private boolean bIsValid;
+
+	private Label messageLabel;
+	private TabItem fCurrentItem;
+	private TabFolder folder;
+	private ArrayList tabs;
+	private ICOptionContainer fParent;
+
+	public TabFolderOptionBlock(ICOptionContainer parent) {
+		fParent = parent;
+	}
+
+	protected TabItem addTab(ICOptionPage tab) {
+		if (tabs == null) {
+			tabs = new ArrayList();
+		}
+		TabItem item = new TabItem(folder, SWT.NONE);
+		item.setText(tab.getLabel());
+		Image img = tab.getImage();
+		if (img != null)
+			item.setImage(img);
+		item.setData(tab);
+		tab.setContainer(fParent);
+		tab.createControl(folder);
+		item.setControl(tab.getControl());
+		tabs.add(tab);
+		return item;
+	}
+
+	public Control createContents(Composite parent) {
+		
+		Composite composite = new Composite(parent, SWT.NONE);
+		composite.setLayout(new GridLayout(1, false));
+
+		messageLabel = new Label(composite, SWT.LEFT);
+		messageLabel.setFont(composite.getFont());
+		messageLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
+
+		Label separator = new Label(composite, SWT.HORIZONTAL);
+		separator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
+
+		folder = new TabFolder(composite, SWT.NONE);
+		folder.setLayoutData(new GridData(GridData.FILL_BOTH));
+		folder.setLayout(new TabFolderLayout());
+
+		fCurrentItem = addTabs();
+
+		folder.addSelectionListener(new SelectionListener() {
+			public void widgetDefaultSelected(SelectionEvent e) {
+			}
+			public void widgetSelected(SelectionEvent e) {
+				fCurrentItem = (TabItem) e.item;
+				fParent.updateContainer();
+			}
+		});
+
+		messageLabel.setText(((ICOptionPage) tabs.get(0)).getMessage());
+		return composite;
+	}
+	
+	abstract protected TabItem addTabs();
+
+	public boolean performOk(IProgressMonitor monitor) {
+		Iterator iter = tabs.iterator();
+		while (iter.hasNext()) {
+			ICOptionPage tab = (ICOptionPage) iter.next();
+			try {
+				tab.performApply(new NullProgressMonitor());
+			} catch (CoreException e) {
+				CUIPlugin.errorDialog(folder.getShell(), "Error", "Error setting options", e);
+				return false;
+			}
+		}
+		return true;
+	}
+
+	/**
+	 * @see DialogPage#setVisible(boolean)
+	 */
+	public void setVisible(boolean visible) {
+		Iterator iter = tabs.iterator();
+		while (iter.hasNext()) {
+			ICOptionPage tab = (ICOptionPage) iter.next();
+			tab.setVisible(visible);
+		}
+		update();
+		folder.setFocus();
+	}
+
+	public void update() {
+		boolean ok = true;
+		Iterator iter = tabs.iterator();
+		while (iter.hasNext()) {
+			ICOptionPage tab = (ICOptionPage) iter.next();
+			ok = tab.isValid();
+			if (!ok) {
+				setErrorMessage(tab.getErrorMessage());
+				break;
+			}
+		}
+		if (ok && fCurrentItem != null) {
+			setErrorMessage(null);
+			ICOptionPage tab = (ICOptionPage) fCurrentItem.getData();
+			messageLabel.setText(tab.getMessage());
+		}
+		setValid(ok);
+	}
+
+	private void setValid(boolean ok) {
+		bIsValid = ok;
+	}
+
+	private void setErrorMessage(String message) {
+		fErrorMessage = message;
+	}
+
+	public String getErrorMessage() {
+		return fErrorMessage;
+	}
+
+	public boolean isValid() {
+		return bIsValid;
+	}
+
+	public void performDefaults() {
+		ICOptionPage tab = (ICOptionPage) fCurrentItem.getData();
+		tab.performDefaults();
+	}
+
+}