Java tutorial
/* * Copyright 2010 JBoss Inc * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.drools.eclipse; import java.net.MalformedURLException; import java.net.URL; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.resource.ImageRegistry; import org.eclipse.swt.graphics.Image; /** * Handles the images used in this plugin. */ public class DroolsPluginImages { public static final String IMG_LOGICAL = "ImageLogical"; public static final String IMG_LOGICAL_DISABLED = "ImageLogicalDisabled"; public static final String REFRESH_LOG = "RefreshLog"; public static final String REFRESH_LOG_DISABLED = "RefreshLogDisabled"; public static final String OPEN_LOG = "OpenLog"; public static final String DELETE_LOG = "ClearLog"; public static final String DELETE_LOG_DISABLED = "ClearLogDisabled"; public static final String INSERT = "Insert"; public static final String UPDATE = "Update"; public static final String RETRACT = "RetractO"; public static final String CREATE_ACTIVATION = "CreateActivation"; public static final String CANCEL_ACTIVATION = "CancelActivation"; public static final String EXECUTE_ACTIVATION = "ExecuteActivation"; public static final String CLASS = "Class"; public static final String PACKAGE = "Package"; public static final String METHOD = "Method"; public static final String VARIABLE = "Variable"; public static final String DROOLS = "Drools"; public static final String RULE = "DroolsRule"; public static final String QUERY = "DroolsQuery"; public static final String DSL_EXPRESSION = "DslExpression"; public static final String IMPORT = "Import"; public static final String DSL = "DSL"; public static final String GLOBAL = "Global"; public static final String RULEFLOW = "RuleFlow"; public static final String RULEFLOW_GROUP = "RuleFlowGroup"; public static final String RULEFLOW_NODE_TRIGGERED = "RuleFlowNodeTriggered"; public static final String RULEGROUP = "RuleGroup"; public static final String DEFAULTRULEGROUP = "DefaultRuleGroup"; // TODO : Change Image public static final String GROUPS = "RuleFlowGroup"; private static ImageRegistry imageRegistry; private static final String PATH_SUFFIX = "/icons/"; private static final URL ICON_BASE_URL = DroolsEclipsePlugin.getDefault().getBundle().getEntry(PATH_SUFFIX); private static void declareImages() { declareRegistryImage(IMG_LOGICAL, "logical_structure.gif"); declareRegistryImage(IMG_LOGICAL_DISABLED, "logical_structure_disabled.gif"); declareRegistryImage(REFRESH_LOG, "refresh.gif"); declareRegistryImage(REFRESH_LOG_DISABLED, "refresh_disabled.gif"); declareRegistryImage(OPEN_LOG, "open.gif"); declareRegistryImage(DELETE_LOG, "clear.gif"); declareRegistryImage(DELETE_LOG_DISABLED, "clear_disabled.gif"); declareRegistryImage(INSERT, "greensquare.GIF"); declareRegistryImage(UPDATE, "yellowsquare.GIF"); declareRegistryImage(RETRACT, "redsquare.GIF"); declareRegistryImage(CREATE_ACTIVATION, "arrowright.GIF"); declareRegistryImage(CANCEL_ACTIVATION, "arrowleft.GIF"); declareRegistryImage(EXECUTE_ACTIVATION, "bluediamond.GIF"); declareRegistryImage(CLASS, "class_obj.gif"); declareRegistryImage(PACKAGE, "package_obj.gif"); declareRegistryImage(METHOD, "methpub_obj.gif"); declareRegistryImage(VARIABLE, "field_private_obj.gif"); declareRegistryImage(DROOLS, "drools.gif"); declareRegistryImage(RULE, "drools-rule.GIF"); declareRegistryImage(QUERY, "drools-query.GIF"); declareRegistryImage(DSL_EXPRESSION, "dsl_expression.gif"); declareRegistryImage(IMPORT, "import.gif"); declareRegistryImage(DSL, "dsl.GIF"); declareRegistryImage(GLOBAL, "field_public_obj.gif"); declareRegistryImage(RULEFLOW, "process.gif"); declareRegistryImage(RULEFLOW_GROUP, "activity.gif"); declareRegistryImage(RULEFLOW_NODE_TRIGGERED, "node-triggered.gif"); declareRegistryImage(RULEGROUP, "package_obj.gif"); declareRegistryImage(DEFAULTRULEGROUP, "package_obj.gif"); } /** * Declare an Image in the registry table. * @param key The key to use when registering the image * @param path The path where the image can be found. This path is relative to where * this plugin class is found (i.e. typically the packages directory) */ public final static void declareRegistryImage(String key, String path) { ImageDescriptor desc = ImageDescriptor.getMissingImageDescriptor(); try { desc = ImageDescriptor.createFromURL(makeIconFileURL(path)); } catch (MalformedURLException e) { DroolsEclipsePlugin.log(e); } imageRegistry.put(key, desc); } /** * Returns the ImageRegistry. */ public static ImageRegistry getImageRegistry() { if (imageRegistry == null) { initializeImageRegistry(); } return imageRegistry; } public static ImageRegistry initializeImageRegistry() { imageRegistry = new ImageRegistry(); declareImages(); return imageRegistry; } /** * Returns the <code>Image</code> identified by the given key, * or <code>null</code> if it does not exist. */ public static Image getImage(String key) { return getImageRegistry().get(key); } public static void putImage(String key, Image image) { getImageRegistry().put(key, image); } /** * Returns the <code>ImageDescriptor</code> identified by the given key, * or <code>null</code> if it does not exist. */ public static ImageDescriptor getImageDescriptor(String key) { return getImageRegistry().getDescriptor(key); } private static URL makeIconFileURL(String iconPath) throws MalformedURLException { if (ICON_BASE_URL == null) { throw new MalformedURLException(); } return new URL(ICON_BASE_URL, iconPath); } }