LabelTab.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.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Widget;

class LabelTab extends AlignableTab {
	/* Example widgets and groups that contain them */
	Label	label1, label2, label3, label4, label5, label6;
	Group	textLabelGroup, imageLabelGroup;

	/* Style widgets added to the "Style" group */
	Button	wrapButton, separatorButton, horizontalButton, verticalButton, shadowInButton, shadowOutButton,
			shadowNoneButton;

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

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

		/* Create a group for the text labels */
		textLabelGroup = new Group(exampleGroup, SWT.NONE);
		GridLayout gridLayout = new GridLayout();
		textLabelGroup.setLayout(gridLayout);
		gridLayout.numColumns = 3;
		textLabelGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		textLabelGroup.setText(ControlExample.getResourceString("Text_Labels"));

		/* Create a group for the image labels */
		imageLabelGroup = new Group(exampleGroup, SWT.SHADOW_NONE);
		gridLayout = new GridLayout();
		imageLabelGroup.setLayout(gridLayout);
		gridLayout.numColumns = 3;
		imageLabelGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		imageLabelGroup.setText(ControlExample.getResourceString("Image_Labels"));
	}

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

		/* Compute the widget style */
		int style = getDefaultStyle();
		if (wrapButton.getSelection())
			style |= SWT.WRAP;
		if (separatorButton.getSelection())
			style |= SWT.SEPARATOR;
		if (horizontalButton.getSelection())
			style |= SWT.HORIZONTAL;
		if (verticalButton.getSelection())
			style |= SWT.VERTICAL;
		if (shadowInButton.getSelection())
			style |= SWT.SHADOW_IN;
		if (shadowOutButton.getSelection())
			style |= SWT.SHADOW_OUT;
		if (shadowNoneButton.getSelection())
			style |= SWT.SHADOW_NONE;
		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 */
		label1 = new Label(textLabelGroup, style);
		label1.setText(ControlExample.getResourceString("One"));
		label2 = new Label(textLabelGroup, style);
		label2.setText(ControlExample.getResourceString("Two"));
		label3 = new Label(textLabelGroup, style);
		if (wrapButton.getSelection())
			label3.setText(ControlExample.getResourceString("Wrap_Text"));
		else
			label3.setText(ControlExample.getResourceString("Three"));
		label4 = new Label(imageLabelGroup, style);
		label4.setImage(instance.images[ControlExample.ciClosedFolder]);
		label5 = new Label(imageLabelGroup, style);
		label5.setImage(instance.images[ControlExample.ciOpenFolder]);
		label6 = new Label(imageLabelGroup, style);
		label6.setImage(instance.images[ControlExample.ciTarget]);
	}

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

		/* Create the extra widgets */
		wrapButton = new Button(styleGroup, SWT.CHECK);
		wrapButton.setText("SWT.WRAP");
		separatorButton = new Button(styleGroup, SWT.CHECK);
		separatorButton.setText("SWT.SEPARATOR");
		horizontalButton = new Button(styleGroup, SWT.RADIO);
		horizontalButton.setText("SWT.HORIZONTAL");
		verticalButton = new Button(styleGroup, SWT.RADIO);
		verticalButton.setText("SWT.VERTICAL");
		Group styleSubGroup = new Group(styleGroup, SWT.NONE);
		styleSubGroup.setLayout(new GridLayout());
		shadowInButton = new Button(styleSubGroup, SWT.RADIO);
		shadowInButton.setText("SWT.SHADOW_IN");
		shadowOutButton = new Button(styleSubGroup, SWT.RADIO);
		shadowOutButton.setText("SWT.SHADOW_OUT");
		shadowNoneButton = new Button(styleSubGroup, SWT.RADIO);
		shadowNoneButton.setText("SWT.SHADOW_NONE");
		borderButton = new Button(styleGroup, SWT.CHECK);
		borderButton.setText("SWT.BORDER");
	}

	/**
	 * Gets the "Example" widget children.
	 */
	Widget[] getExampleWidgets() {
		return new Widget[] { label1, label2, label3, label4, label5, label6 };
	}

	/**
	 * 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[] { "Text", "ToolTipText" };
	}

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

	/**
	 * Sets the alignment of the "Example" widgets.
	 */
	void setExampleWidgetAlignment() {
		int alignment = 0;
		if (leftButton.getSelection())
			alignment = SWT.LEFT;
		if (centerButton.getSelection())
			alignment = SWT.CENTER;
		if (rightButton.getSelection())
			alignment = SWT.RIGHT;
		label1.setAlignment(alignment);
		label2.setAlignment(alignment);
		label3.setAlignment(alignment);
		label4.setAlignment(alignment);
		label5.setAlignment(alignment);
		label6.setAlignment(alignment);
	}

	/**
	 * Sets the state of the "Example" widgets.
	 */
	void setExampleWidgetState() {
		super.setExampleWidgetState();
		boolean isSeparator = (label1.getStyle() & SWT.SEPARATOR) != 0;
		wrapButton.setSelection(!isSeparator && (label1.getStyle() & SWT.WRAP) != 0);
		leftButton.setSelection(!isSeparator && (label1.getStyle() & SWT.LEFT) != 0);
		centerButton.setSelection(!isSeparator && (label1.getStyle() & SWT.CENTER) != 0);
		rightButton.setSelection(!isSeparator && (label1.getStyle() & SWT.RIGHT) != 0);
		shadowInButton.setSelection(isSeparator && (label1.getStyle() & SWT.SHADOW_IN) != 0);
		shadowOutButton.setSelection(isSeparator && (label1.getStyle() & SWT.SHADOW_OUT) != 0);
		shadowNoneButton.setSelection(isSeparator && (label1.getStyle() & SWT.SHADOW_NONE) != 0);
		horizontalButton.setSelection(isSeparator && (label1.getStyle() & SWT.HORIZONTAL) != 0);
		verticalButton.setSelection(isSeparator && (label1.getStyle() & SWT.VERTICAL) != 0);
		wrapButton.setEnabled(!isSeparator);
		leftButton.setEnabled(!isSeparator);
		centerButton.setEnabled(!isSeparator);
		rightButton.setEnabled(!isSeparator);
		shadowInButton.setEnabled(isSeparator);
		shadowOutButton.setEnabled(isSeparator);
		shadowNoneButton.setEnabled(isSeparator);
		horizontalButton.setEnabled(isSeparator);
		verticalButton.setEnabled(isSeparator);
	}
}