--- /dev/null
+package org.argeo.cms.ui.util;
+
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import javax.jcr.Node;
+import javax.jcr.RepositoryException;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.api.NodeUtils;
+import org.argeo.cms.CmsException;
+import org.argeo.cms.auth.CurrentUser;
+import org.argeo.cms.ui.CmsStyles;
+import org.argeo.cms.ui.CmsUiProvider;
+import org.eclipse.rap.rwt.RWT;
+import org.eclipse.rap.rwt.service.ResourceManager;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.MouseListener;
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Label;
+import org.osgi.framework.BundleContext;
+
+/** A link to an internal or external location. */
+public class CmsLink implements CmsUiProvider {
+ private final static Log log = LogFactory.getLog(CmsLink.class);
+ private BundleContext bundleContext;
+
+ private String label;
+ private String custom;
+ private String target;
+ private String image;
+ private MouseListener mouseListener;
+
+ private int horizontalAlignment = SWT.CENTER;
+ private int verticalAlignment = SWT.CENTER;
+
+ private String loggedInLabel = null;
+ private String loggedInTarget = null;
+
+ // internal
+ // private Boolean isUrl = false;
+ private Integer imageWidth, imageHeight;
+
+ public CmsLink() {
+ super();
+ }
+
+ public CmsLink(String label, String target) {
+ this(label, target, null);
+ }
+
+ public CmsLink(String label, String target, String custom) {
+ super();
+ this.label = label;
+ this.target = target;
+ this.custom = custom;
+ init();
+ }
+
+ public void init() {
+ if (image != null) {
+ ImageData image = loadImage();
+ if (imageHeight == null && imageWidth == null) {
+ imageWidth = image.width;
+ imageHeight = image.height;
+ } else if (imageHeight == null) {
+ imageHeight = (imageWidth * image.height) / image.width;
+ } else if (imageWidth == null) {
+ imageWidth = (imageHeight * image.width) / image.height;
+ }
+ }
+ }
+
+ /** @return {@link Composite} with a single {@link Label} child. */
+ @Override
+ public Control createUi(final Composite parent, Node context) {
+// if (image != null && (imageWidth == null || imageHeight == null)) {
+// throw new CmsException("Image is not properly configured."
+// + " Make sure bundleContext property is set and init() method has been called.");
+// }
+
+ Composite comp = new Composite(parent, SWT.NONE);
+ comp.setLayout(CmsUiUtils.noSpaceGridLayout());
+
+ Label link = new Label(comp, SWT.NONE);
+ link.setData(RWT.MARKUP_ENABLED, Boolean.TRUE);
+ GridData layoutData = new GridData(horizontalAlignment, verticalAlignment, false, false);
+ if (image != null) {
+ if (imageHeight != null)
+ layoutData.heightHint = imageHeight;
+ if (label == null)
+ if (imageWidth != null)
+ layoutData.widthHint = imageWidth;
+ }
+
+ link.setLayoutData(layoutData);
+ if (custom != null) {
+ comp.setData(RWT.CUSTOM_VARIANT, custom);
+ link.setData(RWT.CUSTOM_VARIANT, custom);
+ } else {
+ comp.setData(RWT.CUSTOM_VARIANT, CmsStyles.CMS_LINK);
+ link.setData(RWT.CUSTOM_VARIANT, CmsStyles.CMS_LINK);
+ }
+
+ // label
+ StringBuilder labelText = new StringBuilder();
+ if (loggedInTarget != null && isLoggedIn()) {
+ labelText.append("<a style='color:inherit;text-decoration:inherit;' href=\"");
+ if (loggedInTarget.equals("")) {
+ try {
+ Node homeNode = NodeUtils.getUserHome(context.getSession());
+ String homePath = homeNode.getPath();
+ labelText.append("/#" + homePath);
+ } catch (RepositoryException e) {
+ throw new CmsException("Cannot get home path", e);
+ }
+ } else {
+ labelText.append(loggedInTarget);
+ }
+ labelText.append("\">");
+ } else if (target != null) {
+ labelText.append("<a style='color:inherit;text-decoration:inherit;' href=\"");
+ labelText.append(target);
+ labelText.append("\">");
+ }
+ if (image != null) {
+ registerImageIfNeeded();
+ String imageLocation = RWT.getResourceManager().getLocation(image);
+ labelText.append("<img");
+ if (imageWidth != null)
+ labelText.append(" width='").append(imageWidth).append('\'');
+ if (imageHeight != null)
+ labelText.append(" height='").append(imageHeight).append('\'');
+ labelText.append(" src=\"").append(imageLocation).append("\"/>");
+
+ }
+
+ if (loggedInLabel != null && isLoggedIn()) {
+ labelText.append(' ').append(loggedInLabel);
+ } else if (label != null) {
+ labelText.append(' ').append(label);
+ }
+
+ if ((loggedInTarget != null && isLoggedIn()) || target != null)
+ labelText.append("</a>");
+
+ link.setText(labelText.toString());
+
+ if (mouseListener != null)
+ link.addMouseListener(mouseListener);
+
+ return comp;
+ }
+
+ private void registerImageIfNeeded() {
+ ResourceManager resourceManager = RWT.getResourceManager();
+ if (!resourceManager.isRegistered(image)) {
+ URL res = getImageUrl();
+ InputStream inputStream = null;
+ try {
+ IOUtils.closeQuietly(inputStream);
+ inputStream = res.openStream();
+ resourceManager.register(image, inputStream);
+ if (log.isTraceEnabled())
+ log.trace("Registered image " + image);
+ } catch (Exception e) {
+ throw new CmsException("Cannot load image " + image, e);
+ } finally {
+ IOUtils.closeQuietly(inputStream);
+ }
+ }
+ }
+
+ private ImageData loadImage() {
+ URL url = getImageUrl();
+ ImageData result = null;
+ InputStream inputStream = null;
+ try {
+ inputStream = url.openStream();
+ result = new ImageData(inputStream);
+ if (log.isTraceEnabled())
+ log.trace("Loaded image " + image);
+ } catch (Exception e) {
+ throw new CmsException("Cannot load image " + image, e);
+ } finally {
+ IOUtils.closeQuietly(inputStream);
+ }
+ return result;
+ }
+
+ private URL getImageUrl() {
+ URL url;
+ try {
+ // pure URL
+ url = new URL(image);
+ } catch (MalformedURLException e1) {
+ url = bundleContext.getBundle().getResource(image);
+ }
+
+ if (url == null)
+ throw new CmsException("No image " + image + " available.");
+
+ return url;
+ }
+
+ public void setBundleContext(BundleContext bundleContext) {
+ this.bundleContext = bundleContext;
+ }
+
+ public void setLabel(String label) {
+ this.label = label;
+ }
+
+ public void setCustom(String custom) {
+ this.custom = custom;
+ }
+
+ public void setTarget(String target) {
+ this.target = target;
+ // try {
+ // new URL(target);
+ // isUrl = true;
+ // } catch (MalformedURLException e1) {
+ // isUrl = false;
+ // }
+ }
+
+ public void setImage(String image) {
+ this.image = image;
+ }
+
+ public void setLoggedInLabel(String loggedInLabel) {
+ this.loggedInLabel = loggedInLabel;
+ }
+
+ public void setLoggedInTarget(String loggedInTarget) {
+ this.loggedInTarget = loggedInTarget;
+ }
+
+ public void setMouseListener(MouseListener mouseListener) {
+ this.mouseListener = mouseListener;
+ }
+
+ public void setvAlign(String vAlign) {
+ if ("bottom".equals(vAlign)) {
+ verticalAlignment = SWT.BOTTOM;
+ } else if ("top".equals(vAlign)) {
+ verticalAlignment = SWT.TOP;
+ } else if ("center".equals(vAlign)) {
+ verticalAlignment = SWT.CENTER;
+ } else {
+ throw new CmsException("Unsupported vertical allignment " + vAlign + " (must be: top, bottom or center)");
+ }
+ }
+
+ protected boolean isLoggedIn() {
+ return !CurrentUser.isAnonymous();
+ }
+
+ public void setImageWidth(Integer imageWidth) {
+ this.imageWidth = imageWidth;
+ }
+
+ public void setImageHeight(Integer imageHeight) {
+ this.imageHeight = imageHeight;
+ }
+
+}
projects / lgpl / argeo-commons.git / blobdiff