IDEMPIERE-4421 Html asset versioning should allow fluent deployment (#420)

* IDEMPIERE-4421 Html asset versioning should allow fluent deployment

use classpath loading and lang-addon versioning for theme resources

* IDEMPIERE-4421 Html asset versioning should allow fluent deployment

Incorporate backward compatibility patch from Carlos.

org.adempiere.ui.zk/WEB-INF/src/metainfo/zk/lang-addon.xml

@@ -51,4 +51,8 @@ Copyright (C) 2007 Ashley G Ramdass (ADempiere WebUI).
 	<javascript-module name="org.idempiere.commons" version="202011230530"/>
 	<javascript-module name="jquery.maskedinput" version="1.4.1" />
 	<javascript-module name="photobooth"	version="0.7-rsd3" />
+	
+	<!-- this js module doesn't actually exists and it is here for default theme version -->
+	<!-- since loading of  js module is on demand, it doesn't cause any error as long as you don't try to load it -->
+	<javascript-module name="idempiere.theme.default" version="202011282132" />
 </language>

org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/dashboard/DPFavourites.java

@@ -22,7 +22,6 @@ import org.adempiere.webui.adwindow.ADWindow;
 import org.adempiere.webui.desktop.FavouriteController;
 import org.adempiere.webui.exception.ApplicationException;
 import org.adempiere.webui.session.SessionManager;
-import org.adempiere.webui.theme.ITheme;
 import org.adempiere.webui.theme.ThemeManager;
 import org.adempiere.webui.window.FDialog;
 import org.compiere.model.MMenu;
@@ -175,7 +174,7 @@ public class DPFavourites extends DashboardPanel implements EventListener<Event>
 		btnFavItem.setTooltiptext(description);
 		if (ThemeManager.isUseFontIconForImage())
 			btnFavItem.setIconSclass(imageSrc);
-		else if (imageSrc.startsWith(ITheme.THEME_PATH_PREFIX))
+		else if (imageSrc.startsWith(ThemeManager.THEME_PATH_PREFIX))
 			btnFavItem.setImage(imageSrc);
 		else			
 			btnFavItem.setImage(ThemeManager.getThemeResource(imageSrc));

org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/theme/ITheme.java

@@ -21,8 +21,9 @@ package org.adempiere.webui.theme;
 public interface ITheme {
 	//default theme
 	public static final String ZK_THEME_DEFAULT = "default";
-	//theme resource url prefix
-	public static final String THEME_PATH_PREFIX = "/theme/";
+	//theme resource url prefix. ~./ is the zk url prefix for resources loaded from classpath (typically at src/web folder)
+	public static final String THEME_PATH_PREFIX_V8 = "~./theme/";
+	public static final String THEME_PATH_PREFIX_V7 = "/theme/"; // for backward compatibility
 
 	//css for login window and box
 	public static final String LOGIN_WINDOW_CLASS = "login-window";

org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/theme/ThemeManager.java

@@ -32,18 +32,26 @@ import org.zkoss.image.AImage;
  */
 public final class ThemeManager {
 
+	//zk predefined starting path for classpath resources (src/web)
+	public static final String ZK_PREFIX_FOR_CLASSPATH_RESOURCE = "/web";
+	
+	//zk predefined url prefix for resources loaded from classpath 
+	public static final String ZK_URL_PREFIX_FOR_CLASSPATH_RESOURCE = "~./";
+
 	/**	Logger			*/
 	private static CLogger log = CLogger.getCLogger(ThemeManager.class);
 
-	private static String m_theme = null;
+	private static String m_theme = ITheme.ZK_THEME_DEFAULT;
 	private static String m_brokenTheme = null;
 	
+	public static String THEME_PATH_PREFIX = ITheme.THEME_PATH_PREFIX_V8;
+	
 	/**
 	 * @return url for large logo
 	 */
 	public static String getLargeLogo() {
 		String theme = getTheme();
-		String def = ITheme.THEME_PATH_PREFIX+theme+ITheme.LOGIN_LOGO_IMAGE;
+		String def = THEME_PATH_PREFIX+theme+ITheme.LOGIN_LOGO_IMAGE;
 		return MSysConfig.getValue(MSysConfig.ZK_LOGO_LARGE, def);
 	}
 
@@ -52,7 +60,7 @@ public final class ThemeManager {
 	 */
 	public static String getSmallLogo() {
 		String theme = getTheme();
-		String def = ITheme.THEME_PATH_PREFIX+theme+ITheme.HEADER_LOGO_IMAGE;
+		String def = THEME_PATH_PREFIX+theme+ITheme.HEADER_LOGO_IMAGE;
 		String url = MSysConfig.getValue(MSysConfig.ZK_LOGO_SMALL, null);
 		if (url == null)
 			url = MSysConfig.getValue(MSysConfig.WEBUI_LOGOURL, def);
@@ -72,12 +80,22 @@ public final class ThemeManager {
 			if (! theme.equals(m_theme)) {
 				if (! ITheme.ZK_THEME_DEFAULT.equals(theme)) {
 					// Verify the theme.css.dsp exists in the theme folder
-					if (ThemeManager.class.getResource(ITheme.THEME_PATH_PREFIX + theme + ITheme.THEME_STYLESHEET) == null) {
+					String themeCSSURL = THEME_PATH_PREFIX + theme + ITheme.THEME_STYLESHEET;
+					if (ThemeManager.class.getResource(toClassPathResourcePath(themeCSSURL)) == null) {
+						// verify if is a v7 theme
+						themeCSSURL = ITheme.THEME_PATH_PREFIX_V7 + theme + ITheme.THEME_STYLESHEET;
+						if (ThemeManager.class.getResource(toClassPathResourcePath(themeCSSURL)) != null) {
+							THEME_PATH_PREFIX = ITheme.THEME_PATH_PREFIX_V7;
+						} else {
 							log.warning("The theme " + theme + " does not exist or is not properly configured, falling back to default");
 							m_brokenTheme = theme;
+							THEME_PATH_PREFIX = ITheme.THEME_PATH_PREFIX_V8;
 							theme = ITheme.ZK_THEME_DEFAULT;
 						}
 					}
+				} else {
+					THEME_PATH_PREFIX = ITheme.THEME_PATH_PREFIX_V8;
+				}
 				m_theme = theme;
 			}
 		}
@@ -88,21 +106,21 @@ public final class ThemeManager {
 	 * @return url of theme stylesheet
 	 */
 	public static String getStyleSheet() {
-		return ITheme.THEME_PATH_PREFIX + getTheme() + ITheme.THEME_STYLESHEET;
+		return THEME_PATH_PREFIX + getTheme() + ITheme.THEME_STYLESHEET;
 	}
 
 	/**
 	 * @return url of theme stylesheet by browser
 	 */
 	public static String getStyleSheetByBrowser() {
-		return ITheme.THEME_PATH_PREFIX + getTheme() + ITheme.THEME_STYLESHEET_BY_BROWSER;
+		return THEME_PATH_PREFIX + getTheme() + ITheme.THEME_STYLESHEET_BY_BROWSER;
 	}
 
 	/**
 	 * @return url of theme preference page
 	 */
 	public static String getPreference() {
-		return ITheme.THEME_PATH_PREFIX + getTheme() + ITheme.THEME_PREFERENCE;
+		return THEME_PATH_PREFIX + getTheme() + ITheme.THEME_PREFERENCE;
 	}
 	
 	/**
@@ -117,7 +135,7 @@ public final class ThemeManager {
 	 */
 	public static String getBrowserIcon() {
 		String theme = getTheme();
-		String def = ITheme.THEME_PATH_PREFIX + theme + ITheme.BROWSER_ICON_IMAGE;
+		String def = THEME_PATH_PREFIX + theme + ITheme.BROWSER_ICON_IMAGE;
 		return MSysConfig.getValue(MSysConfig.ZK_BROWSER_ICON, def);
 	}
 	
@@ -127,7 +145,7 @@ public final class ThemeManager {
 	 * @return full resource url
 	 */
 	public static String getThemeResource(String name) {
-		StringBuilder builder = new StringBuilder(ITheme.THEME_PATH_PREFIX);
+		StringBuilder builder = new StringBuilder(THEME_PATH_PREFIX);
 		builder.append(getTheme());
 		builder.append("/").append(name);
 		String url = builder.toString().intern();
@@ -182,7 +200,8 @@ public final class ThemeManager {
 		Boolean flag = s_themeHasCustomCSSCache.get(theme);
 		if (flag != null)
 			return flag;
-		if (ThemeManager.class.getResource(ITheme.THEME_PATH_PREFIX +  theme + "/css/fragment/custom.css.dsp") == null) {
+		String customCSSURL = THEME_PATH_PREFIX + theme + "/css/fragment/custom.css.dsp";
+		if (ThemeManager.class.getResource(toClassPathResourcePath(customCSSURL)) == null) {
 			flag = Boolean.FALSE;
 		} else {
 			flag = Boolean.TRUE;
@@ -198,4 +217,18 @@ public final class ThemeManager {
 	public static boolean isUseFontIconForImage() {
 		return "Y".equals(Env.getContext(Env.getCtx(), ITheme.USE_FONT_ICON_FOR_IMAGE));
 	}
+	
+	/**
+	 * @param zkResourceURL zk resource url for classpath resources (url start with ~./)
+	 * @return Resource path for lookup/loading through class loader (absolute path start with /web)
+	 */
+	public static String toClassPathResourcePath(String zkResourceURL) {
+		if (zkResourceURL == null)
+			return zkResourceURL;
+		
+		if (!zkResourceURL.startsWith(ZK_URL_PREFIX_FOR_CLASSPATH_RESOURCE))
+			return zkResourceURL;
+		
+		return ZK_PREFIX_FOR_CLASSPATH_RESOURCE+zkResourceURL.substring(2);
+	}
 }

org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/util/WebUIResourceFinder.java

@@ -74,13 +74,21 @@ public class WebUIResourceFinder implements IResourceFinder {
 			}
 		} else if (url == null && name.startsWith("images/")) {
 			String t = ThemeManager.getThemeResource(name);
+			if (t.startsWith(ThemeManager.ZK_URL_PREFIX_FOR_CLASSPATH_RESOURCE)) {
+				url = ThemeManager.class.getResource(ThemeManager.toClassPathResourcePath(t));
+			} else {
 				e = find(t);
 				url = e != null && e.hasMoreElements() ? e.nextElement() : null;
+			}
 			if (url == null && t.endsWith(".gif")) {
 				t = t.replace(".gif", ".png");
+				if (t.startsWith(ThemeManager.ZK_URL_PREFIX_FOR_CLASSPATH_RESOURCE)) {
+					url = ThemeManager.class.getResource(ThemeManager.toClassPathResourcePath(t));
+				} else {
 					e = find(t);
 					url = e != null && e.hasMoreElements() ? e.nextElement() : null;
 				}
+			}
 		} else if (url == null && name.endsWith(".gif")) {
 			String t = name.replace(".gif", ".png");
 			e = find(t);

org.adempiere.ui.zk/WEB-INF/src/web/theme/default/css/fragment/grid.css.dsp

@@ -7,7 +7,7 @@
 
 .z-grid tbody tr.grid-inactive-row td.row-indicator-selected {
 	background-color: #DCDAD4 !important;
-	background-image: url(${c:encodeURL('/theme/default/images/EditRecord16.png')}) !important;
+	background-image: url(${c:encodeURL('~./theme/default/images/EditRecord16.png')}) !important;
 	background-position: center;
 	background-repeat: no-repeat;
 	background-size: 16px 16px;  
@@ -27,7 +27,7 @@
 
 .z-grid tbody tr.highlight td.row-indicator-selected {
 	background-color: #FFFFCC !important;
-	background-image: url(${c:encodeURL('/theme/default/images/EditRecord16.png')}) !important;
+	background-image: url(${c:encodeURL('~./theme/default/images/EditRecord16.png')}) !important;
 	background-position: center;
 	background-repeat: no-repeat;
 	background-size: 16px 16px;