--- /dev/null
+package org.argeo.cms.ui.util;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.stream.Collectors;
+
+import org.argeo.cms.ui.CmsTheme;
+import org.eclipse.swt.graphics.Image;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+
+/**
+ * Simplifies the theming of an app (only RAP is supported at this stage).<br>
+ *
+ * Additional fonts listed in <code>/fonts.txt</code>.<br>
+ * Additional (standard CSS) header in <code>/header.css</code>.<br>
+ * RAP specific CSS files in <code>/rap/*.css</code>.<br>
+ * All images added as additional resources based on extensions
+ * <code>/ ** /*.{png,gif,jpeg,...}</code>.<br>
+ */
+public class BundleCmsTheme extends AbstractCmsTheme {
+ public final static String DEFAULT_CMS_THEME_BUNDLE = "org.argeo.theme.argeo2";
+
+ public final static String CMS_THEME_PROPERTY = "argeo.cms.theme";
+ public final static String CMS_THEME_BUNDLE_PROPERTY = "argeo.cms.theme.bundle";
+
+// private final static Log log = LogFactory.getLog(BundleCmsTheme.class);
+
+ private String themeId;
+ private Set<String> rapCssPaths = new TreeSet<>();
+ private Set<String> imagesPaths = new TreeSet<>();
+
+ private String headerCss;
+ private List<String> fonts = new ArrayList<>();
+
+ private String basePath;
+ private String rapCssPath;
+ private Bundle themeBundle;
+
+ public BundleCmsTheme() {
+
+ }
+
+ public void init(BundleContext bundleContext, Map<String, String> properties) {
+ initResources(bundleContext, null);
+ }
+
+ public void destroy(BundleContext bundleContext, Map<String, String> properties) {
+
+ }
+
+ @Deprecated
+ public BundleCmsTheme(BundleContext bundleContext) {
+ this(bundleContext, null);
+ }
+
+ @Deprecated
+ public BundleCmsTheme(BundleContext bundleContext, String symbolicName) {
+ initResources(bundleContext, symbolicName);
+ }
+
+ private void initResources(BundleContext bundleContext, String symbolicName) {
+ if (symbolicName == null) {
+ themeBundle = bundleContext.getBundle();
+// basePath = "/theme/";
+// cssPath = basePath;
+ } else {
+ themeBundle = findThemeBundle(bundleContext, symbolicName);
+ }
+ basePath = "/";
+ rapCssPath = "/rap/";
+// this.themeId = RWT.DEFAULT_THEME_ID;
+ this.themeId = themeBundle.getSymbolicName();
+ addRapStyleSheets(themeBundle);
+ addResources("*.png");
+ addResources("*.gif");
+ addResources("*.jpg");
+ addResources("*.jpeg");
+ addResources("*.svg");
+ addResources("*.ico");
+
+ // fonts
+ URL fontsUrl = themeBundle.getEntry(basePath + "fonts.txt");
+ if (fontsUrl != null) {
+ loadFontsUrl(fontsUrl);
+ }
+
+ // common CSS header (plain CSS)
+ URL headerCssUrl = themeBundle.getEntry(basePath + "header.css");
+ if (headerCssUrl != null) {
+ try (BufferedReader buffer = new BufferedReader(new InputStreamReader(headerCssUrl.openStream(), UTF_8))) {
+ headerCss = buffer.lines().collect(Collectors.joining("\n"));
+ } catch (IOException e) {
+ throw new IllegalArgumentException("Cannot read " + headerCssUrl, e);
+ }
+ }
+ }
+
+ public String getHtmlHeaders() {
+ StringBuilder sb = new StringBuilder();
+ if (headerCss != null) {
+ sb.append("<style type='text/css'>\n");
+ sb.append(headerCss);
+ sb.append("\n</style>\n");
+ }
+ for (String link : fonts) {
+ sb.append("<link rel='stylesheet' href='");
+ sb.append(link);
+ sb.append("'/>\n");
+ }
+ if (sb.length() == 0)
+ return null;
+ else
+ return sb.toString();
+ }
+
+ void addRapStyleSheets(Bundle themeBundle) {
+ Enumeration<URL> themeResources = themeBundle.findEntries(rapCssPath, "*.css", true);
+ if (themeResources == null)
+ return;
+ while (themeResources.hasMoreElements()) {
+ String resource = themeResources.nextElement().getPath();
+ // remove first '/' so that RWT registers it
+ resource = resource.substring(1);
+ if (!resource.endsWith("/")) {
+// if (rapCss.containsKey(resource))
+// log.warn("Overriding " + resource + " from " + themeBundle.getSymbolicName());
+// rapCss.put(resource, ssRL);
+ rapCssPaths.add(resource);
+ }
+
+ }
+
+ }
+
+ void loadFontsUrl(URL url) {
+ try (BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream(), UTF_8))) {
+ String line = null;
+ while ((line = in.readLine()) != null) {
+ line = line.trim();
+ if (!line.equals("") && !line.startsWith("#")) {
+ fonts.add(line);
+ }
+ }
+ } catch (IOException e) {
+ throw new IllegalArgumentException("Cannot load URL " + url, e);
+ }
+ }
+
+ void addResources(String pattern) {
+ Enumeration<URL> themeResources = themeBundle.findEntries(basePath, pattern, true);
+ if (themeResources == null)
+ return;
+ while (themeResources.hasMoreElements()) {
+ String resource = themeResources.nextElement().getPath();
+ // remove first '/' so that RWT registers it
+ resource = resource.substring(1);
+ if (!resource.endsWith("/")) {
+// if (resources.containsKey(resource))
+// log.warn("Overriding " + resource + " from " + themeBundle.getSymbolicName());
+// resources.put(resource, themeBRL);
+ imagesPaths.add(resource);
+ }
+
+ }
+
+ }
+
+ @Override
+ public InputStream getResourceAsStream(String resourceName) throws IOException {
+ URL res = themeBundle.getEntry(resourceName);
+ if (res == null) {
+ res = themeBundle.getResource(resourceName);
+ if (res == null)
+ return null;
+// throw new IllegalArgumentException(
+// "Resource " + resourceName + " not found in bundle " + themeBundle.getSymbolicName());
+ }
+ return res.openStream();
+ }
+
+ public String getThemeId() {
+ return themeId;
+ }
+
+
+// public void setThemeId(String themeId) {
+// this.themeId = themeId;
+// }
+//
+// public String getBasePath() {
+// return basePath;
+// }
+//
+// public void setBasePath(String basePath) {
+// this.basePath = basePath;
+// }
+//
+// public String getRapCssPath() {
+// return rapCssPath;
+// }
+//
+// public void setRapCssPath(String cssPath) {
+// this.rapCssPath = cssPath;
+// }
+
+ @Override
+ public Set<String> getRapCssPaths() {
+ return rapCssPaths;
+ }
+
+ @Override
+ public Set<String> getImagesPaths() {
+ return imagesPaths;
+ }
+
+ private static Bundle findThemeBundle(BundleContext bundleContext, String themeId) {
+ if (themeId == null)
+ return null;
+ // TODO optimize
+ // TODO deal with multiple versions
+ Bundle themeBundle = null;
+ if (themeId != null) {
+ for (Bundle bundle : bundleContext.getBundles())
+ if (themeId.equals(bundle.getSymbolicName())) {
+ themeBundle = bundle;
+ break;
+ }
+ }
+ return themeBundle;
+ }
+
+}
projects / lgpl / argeo-commons.git / blobdiff