001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.builder.util;
022
023import java.util.HashMap;
024import java.util.Map;
025
026import org.eclipse.swt.SWT;
027import org.eclipse.swt.events.SelectionListener;
028import org.eclipse.swt.graphics.Color;
029import org.eclipse.swt.graphics.Device;
030import org.eclipse.swt.graphics.Image;
031import org.eclipse.swt.graphics.RGB;
032import org.eclipse.swt.layout.GridData;
033import org.eclipse.swt.layout.GridLayout;
034import org.eclipse.swt.widgets.Button;
035import org.eclipse.swt.widgets.Composite;
036import org.eclipse.swt.widgets.Display;
037import org.eclipse.swt.widgets.Tree;
038import org.eclipse.swt.widgets.TreeItem;
039import org.eclipse.ui.PlatformUI;
040
041/**
042 * @author Franck WOLFF
043 */
044public class SWTUtil {
045
046        private static final String PREFIX_KEY = "PREFIX";
047        private static final String EMPTY_KEY = "EMPTY";
048        private static final String VALUE_KEY = "VALUE";
049        
050        public static final String IMG_PKG_FOLDER = "icons/packagefolder_obj.gif";
051        public static final String IMG_PKG_FOLDER_ERROR = "icons/packagefolder_obj_error.gif";
052        public static final String IMG_LIBRARY = "icons/library_obj.gif";
053        public static final String IMG_JAR = "icons/jar_obj.gif";
054        public static final String IMG_JAR_LIBRARY = "icons/jar_l_obj.gif";
055        public static final String IMG_SETTINGS = "icons/settings_obj.gif";
056        public static final String IMG_INCLUDES = "icons/inclusion_filter_attrib.gif";
057        public static final String IMG_EXCLUDES = "icons/exclusion_filter_attrib.gif";
058        public static final String IMG_OUT_FOLDER = "icons/externalize.gif";
059        public static final String IMG_WARNING = "icons/warning_obj.gif";
060        public static final String IMG_TEMPLATE = "icons/template_obj.gif";
061        public static final String IMG_FILE = "icons/file_obj.gif";
062        public static final String IMG_PROJECTS = "icons/projects.gif";
063        public static final String IMG_GPROJECT = "icons/gproject.gif";
064        public static final String IMG_GPROJECT_ERROR = "icons/gproject_error.gif";
065        public static final String IMG_WIZARD = "icons/gdswiz.gif";
066        
067        public static final RGB WHITE = new RGB(0xff, 0xff, 0xff);
068        public static final RGB LIGHT_RED = new RGB(0xff, 0x80, 0x80);
069        
070        public static final Map<String, Image> IMAGES_CACHE = new HashMap<String, Image>();
071        public static final Map<RGB, Color> COLORS_CACHE = new HashMap<RGB, Color>();
072    
073    public static Button newButton(Composite parent, String text, boolean enabled, SelectionListener listener) {
074        Button button = new Button(parent, SWT.NONE);
075                button.setText("    " + text + "    ");
076                button.setEnabled(enabled);
077                if (listener != null)
078                        button.addSelectionListener(listener);
079                return button;
080    }
081    
082    public static Composite createGridComposite(Composite parent, int numColumns) {
083        Composite composite = new Composite(parent, SWT.NONE);
084        GridLayout layout = new GridLayout();
085        layout.numColumns = numColumns;
086        composite.setLayout(layout);
087
088        GridData data = new GridData();
089        data.verticalAlignment = GridData.FILL;
090        data.horizontalAlignment = GridData.FILL;
091        composite.setLayoutData(data);
092
093        return composite;
094    }
095    
096    public static TreeItem addTreeItem(Tree tree, String image, String text, String prefix, String empty) {
097        TreeItem item = new TreeItem(tree, SWT.NONE);
098
099        item.setImage(getImage(tree.getDisplay(), image));
100        
101        prefix = StringUtil.unNull(prefix);
102        empty = StringUtil.unNull(empty);
103        text = StringUtil.unNull(text);
104        
105        item.setData(PREFIX_KEY, prefix);
106        item.setData(EMPTY_KEY, empty);
107        item.setData(VALUE_KEY, text);
108        
109        text = prefix + (text.length() == 0 ? empty : text);
110        
111        item.setText(text);
112        
113        return item;
114    }
115    
116    public static TreeItem addTreeItem(TreeItem treeItem, String image, String text, String prefix, String empty) {
117        TreeItem item = new TreeItem(treeItem, SWT.NONE);
118
119        item.setImage(getImage(treeItem.getDisplay(), image));
120        
121        prefix = StringUtil.unNull(prefix);
122        empty = StringUtil.unNull(empty);
123        text = StringUtil.unNull(text);
124        
125        item.setData(PREFIX_KEY, prefix);
126        item.setData(EMPTY_KEY, empty);
127        item.setData(VALUE_KEY, text);
128        
129        text = prefix + (text.length() == 0 ? empty : text);
130        
131        item.setText(text);
132        
133        return item;
134    }
135    
136    public static void setTreeItemText(TreeItem item, String text) {
137        if (item.getData(VALUE_KEY) != null) {
138                String prefix = StringUtil.unNull((String)item.getData(PREFIX_KEY));
139                String empty = StringUtil.unNull((String)item.getData(EMPTY_KEY));
140                
141                item.setData(VALUE_KEY, text);
142                
143                text = prefix + (text.length() == 0 ? empty : text);
144        }
145        item.setText(text);
146    }
147    
148    public static String getTreeItemText(TreeItem item) {
149        if (item.getData(VALUE_KEY) != null)
150                return (String)item.getData(VALUE_KEY);
151        return item.getText();
152    }
153    
154    public static GridData newGridData(int style, int horizontalSpan) {
155        GridData gd = new GridData(style);
156        gd.horizontalSpan = horizontalSpan;
157        return gd;
158    }
159    
160    public static Image getImage(Device device, String path) {
161        Image image = IMAGES_CACHE.get(path);
162        if (image == null) {
163                image = new Image(device, SWTUtil.class.getClassLoader().getResourceAsStream(path));
164                IMAGES_CACHE.put(path, image);
165        }
166        return image;
167    }
168    
169    public static Color getColor(Device device, RGB rgb) {
170        Color color = COLORS_CACHE.get(rgb);
171        if (color == null) {
172                color = new Color(device, rgb);
173                COLORS_CACHE.put(rgb, color);
174        }
175        return color;
176    }
177    
178    public static Display getCurrentDisplay() {
179                Display display = Display.getCurrent();
180                if (display == null)
181                        display = PlatformUI.createDisplay();
182                return display;
183    }
184}