org.argeo.cms.ui/src/org/argeo/cms/util/CmsUtils.java

   1 package org.argeo.cms.util;
   2
   3 import java.io.InputStream;
   4 import java.net.MalformedURLException;
   5 import java.net.URL;
   6
   7 import javax.jcr.Node;
   8 import javax.jcr.RepositoryException;
   9 import javax.servlet.http.HttpServletRequest;
  10
  11 import org.apache.commons.io.IOUtils;
  12 import org.argeo.cms.CmsException;
  13 import org.argeo.cms.ui.CmsConstants;
  14 import org.argeo.cms.ui.CmsView;
  15 import org.argeo.eclipse.ui.specific.UiContext;
  16 import org.argeo.jcr.JcrUtils;
  17 import org.argeo.node.NodeConstants;
  18 import org.argeo.node.NodeUtils;
  19 import org.eclipse.rap.rwt.RWT;
  20 import org.eclipse.rap.rwt.service.ResourceManager;
  21 import org.eclipse.swt.SWT;
  22 import org.eclipse.swt.graphics.Image;
  23 import org.eclipse.swt.graphics.ImageData;
  24 import org.eclipse.swt.graphics.Point;
  25 import org.eclipse.swt.layout.GridData;
  26 import org.eclipse.swt.layout.GridLayout;
  27 import org.eclipse.swt.layout.RowData;
  28 import org.eclipse.swt.widgets.Composite;
  29 import org.eclipse.swt.widgets.Control;
  30 import org.eclipse.swt.widgets.Display;
  31 import org.eclipse.swt.widgets.Table;
  32 import org.eclipse.swt.widgets.Widget;
  33
  34 /** Static utilities for the CMS framework. */
  35 public class CmsUtils implements CmsConstants {
  36         // private final static Log log = LogFactory.getLog(CmsUtils.class);
  37
  38         /**
  39          * The CMS view related to this display, or null if none is available from
  40          * this call.
  41          */
  42         public static CmsView getCmsView() {
  43                 return UiContext.getData(CmsView.KEY);
  44         }
  45
  46         public static StringBuilder getServerBaseUrl(HttpServletRequest request) {
  47                 try {
  48                         URL url = new URL(request.getRequestURL().toString());
  49                         StringBuilder buf = new StringBuilder();
  50                         buf.append(url.getProtocol()).append("://").append(url.getHost());
  51                         if (url.getPort() != -1)
  52                                 buf.append(':').append(url.getPort());
  53                         return buf;
  54                 } catch (MalformedURLException e) {
  55                         throw new CmsException("Cannot extract server base URL from " + request.getRequestURL(), e);
  56                 }
  57         }
  58
  59         //
  60         public static String getDataUrl(Node node, HttpServletRequest request) throws RepositoryException {
  61                 try {
  62                         StringBuilder buf = getServerBaseUrl(request);
  63                         buf.append(getDataPath(node));
  64                         return new URL(buf.toString()).toString();
  65                 } catch (MalformedURLException e) {
  66                         throw new CmsException("Cannot build data URL for " + node, e);
  67                 }
  68         }
  69
  70         /** A path in the node repository */
  71         public static String getDataPath(Node node) throws RepositoryException {
  72                 return getDataPath(NodeConstants.NODE, node);
  73         }
  74
  75         public static String getDataPath(String cn, Node node) throws RepositoryException {
  76                 return NodeUtils.getDataPath(cn, node);
  77         }
  78
  79         /** @deprecated Use rowData16px() instead. GridData should not be reused. */
  80         @Deprecated
  81         public static RowData ROW_DATA_16px = new RowData(16, 16);
  82
  83         public static GridLayout noSpaceGridLayout() {
  84                 return noSpaceGridLayout(new GridLayout());
  85         }
  86
  87         public static GridLayout noSpaceGridLayout(GridLayout layout) {
  88                 layout.horizontalSpacing = 0;
  89                 layout.verticalSpacing = 0;
  90                 layout.marginWidth = 0;
  91                 layout.marginHeight = 0;
  92                 return layout;
  93         }
  94
  95         //
  96         // GRID DATA
  97         //
  98         public static GridData fillWidth() {
  99                 return grabWidth(SWT.FILL, SWT.FILL);
 100         }
 101
 102         public static GridData fillAll() {
 103                 return new GridData(SWT.FILL, SWT.FILL, true, true);
 104         }
 105
 106         public static GridData grabWidth(int horizontalAlignment, int verticalAlignment) {
 107                 return new GridData(horizontalAlignment, horizontalAlignment, true, false);
 108         }
 109
 110         public static RowData rowData16px() {
 111                 return new RowData(16, 16);
 112         }
 113
 114         /** Style widget */
 115         public static void style(Widget widget, String style) {
 116                 widget.setData(CmsConstants.STYLE, style);
 117         }
 118
 119         /** Enable markups on widget */
 120         public static void markup(Widget widget) {
 121                 widget.setData(CmsConstants.MARKUP, true);
 122         }
 123
 124         public static void setItemHeight(Table table, int height) {
 125                 table.setData(CmsConstants.ITEM_HEIGHT, height);
 126         }
 127
 128         /** Dispose all children of a Composite */
 129         public static void clear(Composite composite) {
 130                 for (Control child : composite.getChildren())
 131                         child.dispose();
 132         }
 133
 134         //
 135         // JCR
 136         //
 137         public static Node getOrAddEmptyFile(Node parent, Enum<?> child) throws RepositoryException {
 138                 if (has(parent, child))
 139                         return child(parent, child);
 140                 return JcrUtils.copyBytesAsFile(parent, child.name(), new byte[0]);
 141         }
 142
 143         public static Node child(Node parent, Enum<?> en) throws RepositoryException {
 144                 return parent.getNode(en.name());
 145         }
 146
 147         public static Boolean has(Node parent, Enum<?> en) throws RepositoryException {
 148                 return parent.hasNode(en.name());
 149         }
 150
 151         public static Node getOrAdd(Node parent, Enum<?> en) throws RepositoryException {
 152                 return getOrAdd(parent, en, null);
 153         }
 154
 155         public static Node getOrAdd(Node parent, Enum<?> en, String primaryType) throws RepositoryException {
 156                 if (has(parent, en))
 157                         return child(parent, en);
 158                 else if (primaryType == null)
 159                         return parent.addNode(en.name());
 160                 else
 161                         return parent.addNode(en.name(), primaryType);
 162         }
 163
 164         // IMAGES
 165         public static String img(String src, String width, String height) {
 166                 return imgBuilder(src, width, height).append("/>").toString();
 167         }
 168
 169         public static String img(String src, Point size) {
 170                 return img(src, Integer.toString(size.x), Integer.toString(size.y));
 171         }
 172
 173         public static StringBuilder imgBuilder(String src, String width, String height) {
 174                 return new StringBuilder(64).append("<img width='").append(width).append("' height='").append(height)
 175                                 .append("' src='").append(src).append("'");
 176         }
 177
 178         public static String noImg(Point size) {
 179                 ResourceManager rm = RWT.getResourceManager();
 180                 return CmsUtils.img(rm.getLocation(NO_IMAGE), size);
 181         }
 182
 183         public static String noImg() {
 184                 return noImg(NO_IMAGE_SIZE);
 185         }
 186
 187         public static Image noImage(Point size) {
 188                 ResourceManager rm = RWT.getResourceManager();
 189                 InputStream in = null;
 190                 try {
 191                         in = rm.getRegisteredContent(NO_IMAGE);
 192                         ImageData id = new ImageData(in);
 193                         ImageData scaled = id.scaledTo(size.x, size.y);
 194                         Image image = new Image(Display.getCurrent(), scaled);
 195                         return image;
 196                 } finally {
 197                         IOUtils.closeQuietly(in);
 198                 }
 199         }
 200
 201         private CmsUtils() {
 202         }
 203 }