/*******************************************************************************
 * Copyright (c) 2001, 2004 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.wst.wsdl.ui.internal.util.flatui;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Enumeration;
import java.util.Hashtable;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.custom.TableTree;
import org.eclipse.swt.custom.ViewForm;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.wst.wsdl.ui.internal.WSDLEditorPlugin;


public class WidgetFactory {	
  public static final String DEFAULT_HEADER_COLOR = "__default__header__";
  public static final String COLOR_BACKGROUND = "__bg";
  public static final String COLOR_BORDER = "__border";
  public static final String COLOR_COMPOSITE_SEPARATOR = "__compSep";
  public static final String COLOR_HYPERLINK="__hyperlink";
    
  private Hashtable colorRegistry = new Hashtable();
  private Color backgroundColor;
  private Color clientAreaColor;
  private Color foregroundColor;
  private Color fReadOnlyColor;
  private Display fDisplay;
  public static final int BORDER_STYLE = SWT.NONE;
  private BorderPainter borderPainter;
  private Color borderColor;
  private HyperlinkHandler hyperlinkHandler;
  private static Image fBanner;
  

  class BorderPainter implements PaintListener {
        public void paintControl(PaintEvent event) {
            Composite composite = (Composite) event.widget;
            Control[] children = composite.getChildren();
            for (int i = 0; i < children.length; i++) {
                Control c = children[i];
                //if (c.isEnabled()==false) continue;
                if (c instanceof Text
                    || c instanceof Canvas
                    || c instanceof CCombo) {
                    Rectangle b = c.getBounds();
                    GC gc = event.gc;
                    gc.setForeground(c.getBackground());
                    gc.drawRectangle(b.x - 1, b.y - 1, b.width + 1, b.height + 1);
                    gc.setForeground(foregroundColor);
                    gc.drawRectangle(b.x - 2, b.y - 2, b.width + 3, b.height + 3);
                }
                else if (c instanceof Table
                    || c instanceof Tree
                    || c instanceof TableTree) {
                    Rectangle b = c.getBounds();
                    GC gc = event.gc;
                    gc.setForeground(borderColor);
                    //gc.drawRectangle(b.x - 2, b.y - 2, b.width + 3, b.height + 3);
                    gc.drawRectangle(b.x-1, b.y-1, b.width+2, b.height+2);
                }
            }
        }
    }


public WidgetFactory() {
 	fDisplay = Display.getDefault();
    initialize();
}

public Button createButton(Composite parent, String text, int style) {
    int flatStyle = BORDER_STYLE == SWT.BORDER ? SWT.NULL : SWT.FLAT;
    //int flatStyle = SWT.NULL;
    Button button = new Button(parent, style | flatStyle);
    button.setBackground(backgroundColor);
    button.setForeground(foregroundColor);
    if (text!=null) button.setText(text);
    return button;
}
public Composite createComposite(Composite parent) {
    return createComposite(parent, SWT.NULL);
}
public Composite createComposite(Composite parent, int style) {
    Composite composite = new Composite(parent, style);
    composite.setBackground(backgroundColor);
    return composite;
}
public Composite createCompositeSeparator(Composite parent) {
    Composite composite = new Composite(parent, SWT.NONE);
    composite.setBackground(getColor(COLOR_COMPOSITE_SEPARATOR));
    return composite;
}
public Group createGroup(Composite parent, String text) {
	Group group = new Group(parent, SWT.SHADOW_NONE);
	group.setText(text);
    group.setBackground(backgroundColor);
    group.setForeground(foregroundColor);
	return group;
}
public Label createHeadingLabel(Composite parent, String text, Color bg) {
    return createHeadingLabel(parent, text, bg, SWT.NONE);
}
public Label createHeadingLabel(Composite parent, String text, Color bg, int style) {
    Label label = new Label(parent, style);
    label.setText(text);
    label.setBackground(backgroundColor);
    label.setForeground(foregroundColor);
    label.setFont(JFaceResources.getFontRegistry().get(JFaceResources.BANNER_FONT));
    return label;
}
public Label createHyperlinkLabel(Composite parent, String text, IHyperlinkListener listener) {
    return createHyperlinkLabel(parent, text, listener, SWT.NULL);
}
public Label createHyperlinkLabel(Composite parent, String text, IHyperlinkListener listener, int style) {
    Label label = createLabel(parent, text, style);
    turnIntoHyperlink(label, listener);
    return label;
}
public Label createLabel(Composite parent, String text) {
    return createLabel(parent, text, SWT.NONE);
}
public Label createLabel(Composite parent, String text, int style) {
    Label label = new Label(parent, style);
    if (text!=null) label.setText(text);
    label.setBackground(backgroundColor);
    label.setForeground(foregroundColor);
    return label;
}
public Label createSeparator(Composite parent, int style) {
    Label label = new Label(parent, SWT.SEPARATOR | style);
    label.setBackground(backgroundColor);
    label.setForeground(borderColor);
    return label;
}
public ScrolledComposite createScrolledComposite (Composite parent) {
	ScrolledComposite scrolledcomposite = new ScrolledComposite(parent, SWT.V_SCROLL | SWT.H_SCROLL);
    scrolledcomposite.setBackground(backgroundColor);
    scrolledcomposite.setForeground(foregroundColor);
    return scrolledcomposite;
}
public Table createTable(Composite parent, int style) {
    Table table = new Table(parent, BORDER_STYLE | style);
    table.setBackground(backgroundColor);
    table.setForeground(foregroundColor);
    //hookDeleteListener(table);
    return table;
}
public Text createText(Composite parent, String value) {
    return createText(parent, value, BORDER_STYLE | SWT.SINGLE);
}
public Text createText(Composite parent, String value, int style) {
    Text text = new Text(parent, style);
    text.setText(value);
    text.setBackground(clientAreaColor);
    text.setForeground(foregroundColor);
    if ((style & SWT.READ_ONLY) != 0)
    	text.setForeground(fReadOnlyColor);
    return text;
}
public Tree createTree(Composite parent, int style) {
    Tree tree = new Tree(parent, BORDER_STYLE | style);
    tree.setBackground(backgroundColor);
    tree.setForeground(foregroundColor);
    //hookDeleteListener(tree);
    return tree;
}
/* 
private void deleteKeyPressed(Widget widget) {
    if (!(widget instanceof Control)) return;
    Control control = (Control)widget;
    for (Control parent = control.getParent();
        parent != null;
        parent = parent.getParent()) {
        if (parent.getData() instanceof FormSection) {
            FormSection section = (FormSection) parent.getData();
            section.doGlobalAction(IWorkbenchActionConstants.DELETE);
            break;
        }
    }
}
*/
public ViewForm createViewForm(Composite parent) {
	ViewForm viewForm = new ViewForm(parent, SWT.NULL);
    viewForm.setBackground(clientAreaColor);
    viewForm.setForeground(foregroundColor);
    return viewForm;
}
public void dispose() {
    Enumeration colors= colorRegistry.elements();
    while (colors.hasMoreElements()) {
        Color c = (Color)colors.nextElement();
        c.dispose();
    }
    hyperlinkHandler.dispose();
    colorRegistry=null;
    if (fBanner != null)
    {
      fBanner.dispose();
      fBanner = null;
    }
}
public Color getBackgroundColor() {
    return backgroundColor;
}
public Image getBanner() {
  if (fBanner == null)
  {
    try {
      fBanner = (ImageDescriptor.createFromURL(new URL((WSDLEditorPlugin.getInstance().getDescriptor().getInstallURL()), "icons\form_banner.gif"))).createImage();
      System.out.println("Created Image!!!! ");
    } catch (MalformedURLException e) {
      System.out.println("Exception!!!! " + e);
    }
  }
  return fBanner;
}
public Color getBorderColor() {
    return borderColor;
}
public Cursor getBusyCursor() {
    return hyperlinkHandler.getBusyCursor();
}
public Color getClientAreaColor() {
    return clientAreaColor;
}
public Color getColor(String key) {
    return (Color)colorRegistry.get(key);
}
public Color getForegroundColor() {
    return foregroundColor;
}
public Color getHyperlinkColor() {
    return hyperlinkHandler.getForeground();
}
public Cursor getHyperlinkCursor() {
    return hyperlinkHandler.getHyperlinkCursor();
}
public Color getHyperlinkHoverColor() {
    return hyperlinkHandler.getActiveForeground();
}
public int getHyperlinkUnderlineMode() {
    return hyperlinkHandler.getHyperlinkUnderlineMode();
}
/*
public void hookDeleteListener(Control control) {
    if (deleteListener == null) {
        deleteListener = new KeyAdapter() {
            public void keyPressed(KeyEvent event) {
                if (event.character == SWT.DEL && event.stateMask == 0) {
                    deleteKeyPressed(event.widget);
                }
            }
        };
    }
    control.addKeyListener(deleteListener);
}
*/
  private void initStaticColors()
  {
    if (colorRegistry == null)
    {
      colorRegistry = new Hashtable();
      registerColor(COLOR_BACKGROUND, 0xff, 0xfe, 0xf9);
      registerColor(COLOR_BORDER, 195, 191, 179);
      registerColor(COLOR_COMPOSITE_SEPARATOR, 152, 170, 203);
      registerColor(DEFAULT_HEADER_COLOR, 0x48, 0x70, 0x98);
      registerColor(COLOR_HYPERLINK, 0, 0, 153);
    }
  }

private void initialize() {
    clientAreaColor = fDisplay.getSystemColor(SWT.COLOR_LIST_BACKGROUND);
    fReadOnlyColor = fDisplay.getSystemColor(SWT.COLOR_DARK_GRAY);
    initStaticColors();
    backgroundColor = clientAreaColor;
    borderColor = getColor(COLOR_BORDER);
    foregroundColor = fDisplay.getSystemColor(SWT.COLOR_LIST_FOREGROUND);
    hyperlinkHandler = new HyperlinkHandler();
    hyperlinkHandler.setForeground(getColor(COLOR_HYPERLINK));
    hyperlinkHandler.setBackground(backgroundColor);
}
public void paintBordersFor(Composite parent) {
    if (BORDER_STYLE == SWT.BORDER) return;
    if (borderPainter==null) borderPainter = new BorderPainter();
    parent.addPaintListener(borderPainter);
}
public Color registerColor(String key, int r, int g, int b) {
    Color c = new Color(fDisplay, r, g, b);
    colorRegistry.put(key, c);
    return c;
}

public void setClientAreaColor(Color color)
{
  clientAreaColor = color;
  backgroundColor = clientAreaColor;
}

public void setHyperlinkColor(Color color) {
    hyperlinkHandler.setForeground(color);
}
public void setHyperlinkHoverColor(org.eclipse.swt.graphics.Color hoverColor) {
    hyperlinkHandler.setActiveForeground(hoverColor);
}
public void setHyperlinkUnderlineMode(int newHyperlinkUnderlineMode) {
    hyperlinkHandler.setHyperlinkUnderlineMode(newHyperlinkUnderlineMode);
}
public void turnIntoHyperlink(Control control, IHyperlinkListener listener) {
    hyperlinkHandler.registerHyperlink(control, listener);
}

}