TextTab.java

/*******************************************************************************
 * Copyright (c) 2000, 2007 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.swt.examples.controlexample;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Widget;

class TextTab extends ScrollableTab {
	Button	leftButton, centerButton, rightButton;
	/* Example widgets and groups that contain them */
	Text	text;

	Group	textGroup;
	/* Style widgets added to the "Style" group */
	Button	wrapButton, readOnlyButton, passwordButton, searchButton, cancelButton;

	/**
	 * Creates the Tab within a given instance of ControlExample.
	 */
	TextTab(ControlExample instance) {
		super(instance);
	}

	/**
	 * Creates the "Example" group.
	 */
	void createExampleGroup() {
		super.createExampleGroup();

		/* Create a group for the text widget */
		textGroup = new Group(exampleGroup, SWT.NONE);
		textGroup.setLayout(new GridLayout());
		textGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		textGroup.setText("Text");
	}

	/**
	 * Creates the "Example" widgets.
	 */
	void createExampleWidgets() {

		/* Compute the widget style */
		int style = getDefaultStyle();
		if (singleButton.getSelection())
			style |= SWT.SINGLE;
		if (multiButton.getSelection())
			style |= SWT.MULTI;
		if (horizontalButton.getSelection())
			style |= SWT.H_SCROLL;
		if (verticalButton.getSelection())
			style |= SWT.V_SCROLL;
		if (wrapButton.getSelection())
			style |= SWT.WRAP;
		if (readOnlyButton.getSelection())
			style |= SWT.READ_ONLY;
		if (passwordButton.getSelection())
			style |= SWT.PASSWORD;
		if (searchButton.getSelection())
			style |= SWT.SEARCH;
		if (cancelButton.getSelection())
			style |= SWT.CANCEL;
		if (borderButton.getSelection())
			style |= SWT.BORDER;
		if (leftButton.getSelection())
			style |= SWT.LEFT;
		if (centerButton.getSelection())
			style |= SWT.CENTER;
		if (rightButton.getSelection())
			style |= SWT.RIGHT;

		/* Create the example widgets */
		text = new Text(textGroup, style);
		text.setText(ControlExample.getResourceString("Example_string") + Text.DELIMITER
				+ ControlExample.getResourceString("One_Two_Three"));
	}

	/**
	 * Creates the "Style" group.
	 */
	void createStyleGroup() {
		super.createStyleGroup();

		/* Create the extra widgets */
		wrapButton = new Button(styleGroup, SWT.CHECK);
		wrapButton.setText("SWT.WRAP");
		readOnlyButton = new Button(styleGroup, SWT.CHECK);
		readOnlyButton.setText("SWT.READ_ONLY");
		passwordButton = new Button(styleGroup, SWT.CHECK);
		passwordButton.setText("SWT.PASSWORD");
		searchButton = new Button(styleGroup, SWT.CHECK);
		searchButton.setText("SWT.SEARCH");
		cancelButton = new Button(styleGroup, SWT.CHECK);
		cancelButton.setText("SWT.CANCEL");

		Composite alignmentGroup = new Composite(styleGroup, SWT.NONE);
		GridLayout layout = new GridLayout();
		layout.marginWidth = layout.marginHeight = 0;
		alignmentGroup.setLayout(layout);
		alignmentGroup.setLayoutData(new GridData(GridData.FILL_BOTH));
		leftButton = new Button(alignmentGroup, SWT.RADIO);
		leftButton.setText("SWT.LEFT");
		centerButton = new Button(alignmentGroup, SWT.RADIO);
		centerButton.setText("SWT.CENTER");
		rightButton = new Button(alignmentGroup, SWT.RADIO);
		rightButton.setText("SWT.RIGHT");
	}

	/**
	 * Creates the tab folder page.
	 * 
	 * @param tabFolder
	 *            org.eclipse.swt.widgets.TabFolder
	 * @return the new page for the tab folder
	 */
	Composite createTabFolderPage(TabFolder tabFolder) {
		super.createTabFolderPage(tabFolder);

		/*
		 * Add a resize listener to the tabFolderPage so that if the user types into the example widget to change its
		 * preferred size, and then resizes the shell, we recalculate the preferred size correctly.
		 */
		tabFolderPage.addControlListener(new ControlAdapter() {
			public void controlResized(ControlEvent e) {
				setExampleWidgetSize();
			}
		});

		return tabFolderPage;
	}

	/**
	 * Gets the "Example" widget children.
	 */
	Widget[] getExampleWidgets() {
		return new Widget[] { text };
	}

	/**
	 * Returns a list of set/get API method names (without the set/get prefix) that can be used to set/get values in the
	 * example control(s).
	 */
	String[] getMethodNames() {
		return new String[] { "DoubleClickEnabled", "EchoChar", "Editable", "Orientation", "Selection", "Tabs", "Text",
				"TextLimit", "ToolTipText", "TopIndex" };
	}

	/**
	 * Gets the text for the tab folder item.
	 */
	String getTabText() {
		return "Text";
	}

	/**
	 * Sets the state of the "Example" widgets.
	 */
	void setExampleWidgetState() {
		super.setExampleWidgetState();
		wrapButton.setSelection((text.getStyle() & SWT.WRAP) != 0);
		readOnlyButton.setSelection((text.getStyle() & SWT.READ_ONLY) != 0);
		passwordButton.setSelection((text.getStyle() & SWT.PASSWORD) != 0);
		searchButton.setSelection((text.getStyle() & SWT.SEARCH) != 0);
		leftButton.setSelection((text.getStyle() & SWT.LEFT) != 0);
		centerButton.setSelection((text.getStyle() & SWT.CENTER) != 0);
		rightButton.setSelection((text.getStyle() & SWT.RIGHT) != 0);

		/*
		 * Special case: CANCEL and H_SCROLL have the same value, so to avoid confusion, only set CANCEL if SEARCH is
		 * set.
		 */
		if ((text.getStyle() & SWT.SEARCH) != 0) {
			cancelButton.setSelection((text.getStyle() & SWT.CANCEL) != 0);
			horizontalButton.setSelection(false);
		} else {
			cancelButton.setSelection(false);
			horizontalButton.setSelection((text.getStyle() & SWT.H_SCROLL) != 0);
		}

		passwordButton.setEnabled((text.getStyle() & SWT.SINGLE) != 0);
		searchButton.setEnabled((text.getStyle() & SWT.SINGLE) != 0);
		cancelButton.setEnabled((text.getStyle() & SWT.SEARCH) != 0);
		wrapButton.setEnabled((text.getStyle() & SWT.MULTI) != 0);
		horizontalButton.setEnabled((text.getStyle() & SWT.MULTI) != 0);
		verticalButton.setEnabled((text.getStyle() & SWT.MULTI) != 0);
	}
}