twistielabel.java

java 文件下载器。可自定义

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   TwistieLabel.java

package org.gudy.azureus2.ui.swt;

import java.util.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;

// Referenced classes of package org.gudy.azureus2.ui.swt:
//			ITwistieConstants, ITwistieListener

public class TwistieLabel extends Composite
	implements ITwistieConstants
{
	private class MouseInterceptor extends MouseAdapter
	{

		final TwistieLabel this$0;

		public void mouseDown(MouseEvent e)
		{
			isCollapsed = !isCollapsed;
			redraw();
			notifyTwistieListeners();
		}

		private MouseInterceptor()
		{
			this$0 = TwistieLabel.this;
			super();
		}

	}


	private int style;
	static final int points_for_expanded[] = {
		0, 2, 8, 2, 4, 6
	};
	static final int points_for_collapsed[] = {
		2, -1, 2, 8, 6, 4
	};
	private Label titleLabel;
	private Color twistieColor;
	private boolean isCollapsed;
	private Label descriptionLabel;
	private List listeners;

	public TwistieLabel(Composite parent, int style)
	{
		super(parent, 0);
		this.style = 2;
		titleLabel = null;
		twistieColor = null;
		isCollapsed = true;
		descriptionLabel = null;
		listeners = new ArrayList();
		setBackgroundMode(2);
		this.style = style;
		GridLayout gLayout = new GridLayout();
		gLayout.marginHeight = 0;
		gLayout.marginWidth = 0;
		gLayout.verticalSpacing = 0;
		gLayout.horizontalSpacing = 0;
		setLayout(gLayout);
		titleLabel = new Label(this, 0);
		if ((this.style & 8) != 0)
		{
			Label separator = new Label(this, 258);
			GridData labelData = new GridData(4, 0x1000000, true, false);
			labelData.horizontalIndent = 10;
			separator.setLayoutData(labelData);
		}
		GridData labelData;
		if ((this.style & 4) != 0)
		{
			descriptionLabel = new Label(this, 64);
			labelData = new GridData(4, 4, true, false);
			labelData.horizontalIndent = 10;
			descriptionLabel.setLayoutData(labelData);
			Font initialFont = descriptionLabel.getFont();
			FontData fontData[] = initialFont.getFontData();
			for (int i = 0; i < fontData.length; i++)
				fontData[i].setStyle(fontData[i].getStyle() | 2);

			descriptionLabel.setFont(new Font(getDisplay(), fontData));
		}
		if ((this.style & 0x10) != 0)
			isCollapsed = false;
		labelData = new GridData(4, 0x1000000, true, false);
		labelData.horizontalIndent = 10;
		titleLabel.setLayoutData(labelData);
		MouseInterceptor interceptor = new MouseInterceptor();
		super.addMouseListener(interceptor);
		titleLabel.addMouseListener(interceptor);
		addPaintListener(new PaintListener() {

			final TwistieLabel this$0;

			public void paintControl(PaintEvent e)
			{
				int offsetX = titleLabel.getBounds().x - 10;
				int offsetY = titleLabel.getBounds().y + 3;
				if (null != twistieColor)
					e.gc.setBackground(twistieColor);
				else
					e.gc.setBackground(getForeground());
				if (isCollapsed)
					e.gc.fillPolygon(translate(TwistieLabel.points_for_collapsed, offsetX, offsetY));
				else
					e.gc.fillPolygon(translate(TwistieLabel.points_for_expanded, offsetX, offsetY));
			}

			
			{
				this$0 = TwistieLabel.this;
				super();
			}
		});
	}

	private int[] translate(int data[], int x, int y)
	{
		int target[] = new int[data.length];
		for (int i = 0; i < data.length; i += 2)
			target[i] = data[i] + x;

		for (int i = 1; i < data.length; i += 2)
			target[i] = data[i] + y;

		return target;
	}

	public void addMouseListener(MouseListener listener)
	{
		if (null != titleLabel)
			titleLabel.addMouseListener(listener);
		super.addMouseListener(listener);
	}

	public void removeMouseListener(MouseListener listener)
	{
		if (null != titleLabel)
			titleLabel.removeMouseListener(listener);
		super.removeMouseListener(listener);
	}

	public void setTwistieForeground(Color color)
	{
		twistieColor = color;
	}

	public void setForeground(Color color)
	{
		if (null != titleLabel && !titleLabel.isDisposed())
			titleLabel.setForeground(color);
		if (null != descriptionLabel && !descriptionLabel.isDisposed())
			descriptionLabel.setForeground(color);
		if (null == twistieColor)
			twistieColor = color;
		super.setForeground(color);
	}

	public void setBackground(Color color)
	{
		if (null != titleLabel)
			titleLabel.setBackground(color);
		if (null != descriptionLabel)
			descriptionLabel.setBackground(color);
		super.setBackground(color);
	}

	public void setTitle(String string)
	{
		if (null != titleLabel)
			titleLabel.setText(string);
	}

	public void setDescription(String string)
	{
		if (null != descriptionLabel)
			descriptionLabel.setText(string);
	}

	public void setToolTipText(String string)
	{
		if (null != titleLabel)
			titleLabel.setToolTipText(string);
		if (null != descriptionLabel)
			descriptionLabel.setToolTipText(string);
		super.setToolTipText(string);
	}

	public void setEnabled(boolean enabled)
	{
		if (null != titleLabel)
			titleLabel.setEnabled(enabled);
		super.setEnabled(enabled);
	}

	public boolean isCollapsed()
	{
		return isCollapsed;
	}

	public void addTwistieListener(ITwistieListener listener)
	{
		listeners.add(listener);
	}

	public void removeTwistieListener(ITwistieListener listener)
	{
		listeners.remove(listener);
	}

	private void notifyTwistieListeners()
	{
		for (Iterator iterator = listeners.iterator(); iterator.hasNext(); ((ITwistieListener)iterator.next()).isCollapsed(isCollapsed()));
	}







}