/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. 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:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.css2.widget;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.FigureUtilities;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.jst.pagedesigner.css2.ICSSStyle;
import org.eclipse.jst.pagedesigner.css2.font.ICSSFont;
import org.eclipse.jst.pagedesigner.css2.provider.DimensionInfo;
import org.eclipse.jst.pagedesigner.css2.style.DefaultStyle;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;
/**
* @author mengbo
* @version 1.5
*/
public class ListWidgetProvider extends AbstractWidgetProvider {
private static int DEFAULTSIZE = 4;
private static final int VERTICAL_PADDING = 6;
private static final int HORIZONTAL_PADDING = 12;
private static int ARRAWWIDTH = 16;
private static int ARROWHEIGHT = 16;
private String[] _options;
private int _rows = DEFAULTSIZE;
/**
* @param style
*/
public ListWidgetProvider(ICSSStyle style) {
super(style);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.css2.provider.ICSSWidgetProvider#getPreferredDimension(int,
* int)
*/
public DimensionInfo getPreferredDimension(int width, int height) {
if (width <= 0) {
width = getDefaultWidth();
}
if (height <= 0) {
height = getDefaultHeight();
}
return new DimensionInfo(width, height, -1);
}
/**
* by default, the combo's width will be calculated from the longest option
* value.
*
* @return the default width
*/
public int getDefaultWidth() {
int longestStringWidth = 0;
if (_options != null) {
ICSSStyle style = this.getCSSStyle();
if (style == null) {
style = DefaultStyle.getInstance();
}
ICSSFont font = style.getCSSFont();
Font swtFont = font.getSwtFont();
for (int i = 0; i < _options.length; i++) {
int width = FigureUtilities.getTextWidth(_options[i], swtFont);
if (width > longestStringWidth) {
longestStringWidth = width;
}
}
}
// text area width + borderWidth + vertical scroll width
return (longestStringWidth) + HORIZONTAL_PADDING + ARRAWWIDTH;
}
/**
*
* @return the default height
* @see TextInputWidgetProvider#getDefaultHeight()
*/
public int getDefaultHeight() {
ICSSStyle style = this.getCSSStyle();
if (style == null) {
style = DefaultStyle.getInstance();
}
ICSSFont font = style.getCSSFont();
Font swtfont = font.getSwtFont();
int fontHeight = FigureUtilities.getFontMetrics(swtfont).getHeight();
return (fontHeight) * _rows + VERTICAL_PADDING;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.css2.provider.ICSSWidgetProvider#paintFigure(org.eclipse.draw2d.Graphics,
* org.eclipse.draw2d.geometry.Rectangle)
*/
public void paintFigure(Graphics g, Rectangle rect) {
BorderUtil.drawBorder(g, rect.x, rect.y, rect.width, rect.height,
BORDERTHICK, true);
if (_options != null) {
ICSSStyle style = this.getCSSStyle();
if (style == null) {
style = DefaultStyle.getInstance();
}
ICSSFont font = style.getCSSFont();
Font swtfont = font.getSwtFont();
g.setFont(swtfont);
Color newColor = null;
Object color = style.getColor();
if (color instanceof Color) {
g.setForegroundColor((Color) color);
} else if (color instanceof RGB) {
newColor = new Color(Display.getCurrent(), (RGB) color);
g.setForegroundColor(newColor);
} else {
g.setForegroundColor(ColorConstants.black);
}
int fontHeight = FigureUtilities.getFontMetrics(swtfont)
.getHeight();
int x = rect.x + HORIZONTAL_PADDING / 2;
int y = rect.y + VERTICAL_PADDING / 2;
g.clipRect(rect);
for (int i = 0; i < _options.length
&& (i * fontHeight < rect.height - VERTICAL_PADDING); i++) {
g.drawString(_options[i], x, y);
y += fontHeight;
}
if (newColor != null) {
newColor.dispose();
}
int borderThick = 2;
Rectangle barRect = new Rectangle(rect.x, rect.y + borderThick,
rect.width - borderThick, rect.height - 2 * borderThick);
BorderUtil.drawVertialBar(g, ARRAWWIDTH, ARROWHEIGHT, borderThick,
barRect);
}
}
/**
* @param string
* @param x
* @param y
* @return
*/
private String normalize(String string) {
if (string == null) {
return ""; //$NON-NLS-1$
}
int index = string.indexOf('\r');
if (index >= 0) {
string = string.substring(0, index);
}
index = string.indexOf('\n');
if (index >= 0) {
string = string.substring(0, index);
}
return string;
}
/**
* set the options to be displayed in this combo box.
*
* @param options
*/
public void setOptions(String[] options) {
this._options = options;
if (_options != null) {
for (int i = 0; i < _options.length; i++) {
_options[i] = normalize(_options[i]);
}
}
}
/**
* set the default number of rows to be displayed.
*
* @param rows
*/
public void setRows(int rows) {
_rows = (rows > 0 ? rows : DEFAULTSIZE);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.css2.provider.ICSSWidgetProvider#isHandlingBorder()
*/
public boolean isHandlingBorder() {
return false;
}
}