Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2012 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.jdt.internal.ui.wizards.buildpaths; import org.eclipse.swt.graphics.Image; import org.eclipse.core.runtime.IPath; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.DecorationOverlayIcon; import org.eclipse.jface.viewers.IDecoration; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.ide.IDE; import org.eclipse.jdt.core.ClasspathContainerInitializer; import org.eclipse.jdt.core.IAccessRule; import org.eclipse.jdt.core.IClasspathContainer; import org.eclipse.jdt.core.IClasspathEntry; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.internal.corext.util.Messages; import org.eclipse.jdt.ui.ISharedImages; import org.eclipse.jdt.ui.JavaElementImageDescriptor; import org.eclipse.jdt.ui.JavaElementLabels; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jdt.ui.wizards.ClasspathAttributeConfiguration; import org.eclipse.jdt.ui.wizards.ClasspathAttributeConfiguration.ClasspathAttributeAccess; import org.eclipse.jdt.internal.ui.JavaPlugin; import org.eclipse.jdt.internal.ui.JavaPluginImages; import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels; import org.eclipse.jdt.internal.ui.viewsupport.ImageDescriptorRegistry; import org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider; import org.eclipse.jdt.internal.ui.wizards.NewWizardMessages; public class CPListLabelProvider extends LabelProvider { private String fNewLabel, fClassLabel, fMissing; private ImageDescriptorRegistry fRegistry; private ISharedImages fSharedImages; private ImageDescriptor fProjectImage; private ClasspathAttributeConfigurationDescriptors fAttributeDescriptors; public CPListLabelProvider() { fNewLabel = NewWizardMessages.CPListLabelProvider_new; fClassLabel = NewWizardMessages.CPListLabelProvider_classcontainer; fMissing = NewWizardMessages.CPListLabelProvider_missing; fRegistry = JavaPlugin.getImageDescriptorRegistry(); fSharedImages = JavaUI.getSharedImages(); IWorkbench workbench = JavaPlugin.getDefault().getWorkbench(); fProjectImage = workbench.getSharedImages().getImageDescriptor(IDE.SharedImages.IMG_OBJ_PROJECT); fAttributeDescriptors = JavaPlugin.getDefault().getClasspathAttributeConfigurationDescriptors(); } @Override public String getText(Object element) { if (element instanceof CPListElement) { return getCPListElementText((CPListElement) element); } else if (element instanceof CPListElementAttribute) { CPListElementAttribute attribute = (CPListElementAttribute) element; String text = getCPListElementAttributeText(attribute); if (attribute.isNonModifiable()) { return Messages.format(NewWizardMessages.CPListLabelProvider_non_modifiable_attribute, text); } return text; } else if (element instanceof CPUserLibraryElement) { return getCPUserLibraryText((CPUserLibraryElement) element); } else if (element instanceof IAccessRule) { IAccessRule rule = (IAccessRule) element; return Messages.format(NewWizardMessages.CPListLabelProvider_access_rules_label, new String[] { AccessRulesLabelProvider.getResolutionLabel(rule.getKind()), BasicElementLabels.getPathLabel(rule.getPattern(), false) }); } return super.getText(element); } public String getCPUserLibraryText(CPUserLibraryElement element) { String name = element.getName(); if (element.isSystemLibrary()) { name = Messages.format(NewWizardMessages.CPListLabelProvider_systemlibrary, name); } return name; } public String getCPListElementAttributeText(CPListElementAttribute attrib) { String notAvailable = NewWizardMessages.CPListLabelProvider_none; String key = attrib.getKey(); if (key.equals(CPListElement.SOURCEATTACHMENT)) { String arg; IPath path = (IPath) attrib.getValue(); if (path != null && !path.isEmpty()) { if (attrib.getParent().getEntryKind() == IClasspathEntry.CPE_VARIABLE) { arg = getVariableString(path); } else { arg = getPathString(path, path.getDevice() != null); } } else { arg = notAvailable; } return Messages.format(NewWizardMessages.CPListLabelProvider_source_attachment_label, new String[] { arg }); } else if (key.equals(CPListElement.OUTPUT)) { String arg = null; IPath path = (IPath) attrib.getValue(); if (path != null) { arg = BasicElementLabels.getPathLabel(path, false); } else { arg = NewWizardMessages.CPListLabelProvider_default_output_folder_label; } return Messages.format(NewWizardMessages.CPListLabelProvider_output_folder_label, new String[] { arg }); } else if (key.equals(CPListElement.EXCLUSION)) { String arg = null; IPath[] patterns = (IPath[]) attrib.getValue(); if (patterns != null && patterns.length > 0) { int patternsCount = 0; StringBuffer buf = new StringBuffer(); for (int i = 0; i < patterns.length; i++) { if (patterns[i].segmentCount() > 0) { String pattern = BasicElementLabels.getPathLabel(patterns[i], false); if (patternsCount > 0) { buf.append(NewWizardMessages.CPListLabelProvider_exclusion_filter_separator); } buf.append(pattern); patternsCount++; } } if (patternsCount > 0) { arg = buf.toString(); } else { arg = notAvailable; } } else { arg = notAvailable; } return Messages.format(NewWizardMessages.CPListLabelProvider_exclusion_filter_label, new String[] { arg }); } else if (key.equals(CPListElement.INCLUSION)) { String arg = null; IPath[] patterns = (IPath[]) attrib.getValue(); if (patterns != null && patterns.length > 0) { int patternsCount = 0; StringBuffer buf = new StringBuffer(); for (int i = 0; i < patterns.length; i++) { if (patterns[i].segmentCount() > 0) { String pattern = BasicElementLabels.getPathLabel(patterns[i], false); if (patternsCount > 0) { buf.append(NewWizardMessages.CPListLabelProvider_inclusion_filter_separator); } buf.append(pattern); patternsCount++; } } if (patternsCount > 0) { arg = buf.toString(); } else { arg = notAvailable; } } else { arg = NewWizardMessages.CPListLabelProvider_all; } return Messages.format(NewWizardMessages.CPListLabelProvider_inclusion_filter_label, new String[] { arg }); } else if (key.equals(CPListElement.ACCESSRULES)) { IAccessRule[] rules = (IAccessRule[]) attrib.getValue(); int nRules = rules != null ? rules.length : 0; int parentKind = attrib.getParent().getEntryKind(); if (parentKind == IClasspathEntry.CPE_PROJECT) { Boolean combined = (Boolean) attrib.getParent().getAttribute(CPListElement.COMBINE_ACCESSRULES); if (nRules > 0) { if (combined.booleanValue()) { if (nRules == 1) { return NewWizardMessages.CPListLabelProvider_project_access_rules_combined_singular; } else { return Messages.format( NewWizardMessages.CPListLabelProvider_project_access_rules_combined_plural, String.valueOf(nRules)); } } else { if (nRules == 1) { return NewWizardMessages.CPListLabelProvider_project_access_rules_not_combined_singular; } else { return Messages.format( NewWizardMessages.CPListLabelProvider_project_access_rules_not_combined_plural, String.valueOf(nRules)); } } } else { return NewWizardMessages.CPListLabelProvider_project_access_rules_no_rules; } } else if (parentKind == IClasspathEntry.CPE_CONTAINER) { if (nRules > 1) { return Messages.format(NewWizardMessages.CPListLabelProvider_container_access_rules_plural, String.valueOf(nRules)); } else if (nRules == 1) { return NewWizardMessages.CPListLabelProvider_container_access_rules_singular; } else { return NewWizardMessages.CPListLabelProvider_container_no_access_rules; } } else { if (nRules > 1) { return Messages.format(NewWizardMessages.CPListLabelProvider_access_rules_enabled_plural, String.valueOf(nRules)); } else if (nRules == 1) { return NewWizardMessages.CPListLabelProvider_access_rules_enabled_singular; } else { return NewWizardMessages.CPListLabelProvider_access_rules_disabled; } } } else if (key.equals(CPListElement.IGNORE_OPTIONAL_PROBLEMS)) { String arg; if ("true".equals(attrib.getValue())) { //$NON-NLS-1$ arg = NewWizardMessages.CPListLabelProvider_ignore_optional_problems_yes; } else { arg = NewWizardMessages.CPListLabelProvider_ignore_optional_problems_no; } return Messages.format(NewWizardMessages.CPListLabelProvider_ignore_optional_problems_label, arg); } else { ClasspathAttributeConfiguration config = fAttributeDescriptors.get(key); if (config != null) { ClasspathAttributeAccess access = attrib.getClasspathAttributeAccess(); String nameLabel = config.getNameLabel(access); String valueLabel = config.getValueLabel(access); // should be LTR marked return Messages.format(NewWizardMessages.CPListLabelProvider_attribute_label, new String[] { nameLabel, valueLabel }); } String arg = (String) attrib.getValue(); if (arg == null) { arg = notAvailable; } return Messages.format(NewWizardMessages.CPListLabelProvider_attribute_label, new String[] { key, arg }); } } public String getCPListElementText(CPListElement cpentry) { IPath path = cpentry.getPath(); switch (cpentry.getEntryKind()) { case IClasspathEntry.CPE_LIBRARY: { IResource resource = cpentry.getResource(); if (resource instanceof IContainer) { StringBuffer buf = new StringBuffer(BasicElementLabels.getPathLabel(path, false)); IPath linkTarget = cpentry.getLinkTarget(); if (linkTarget != null) { buf.append(JavaElementLabels.CONCAT_STRING); buf.append(BasicElementLabels.getPathLabel(linkTarget, true)); } buf.append(' '); buf.append(fClassLabel); if (!resource.exists()) { buf.append(' '); if (cpentry.isMissing()) { buf.append(fMissing); } else { buf.append(fNewLabel); } } return buf.toString(); } else { String label = getPathString(path, resource == null); if (cpentry.isMissing()) { label = label + ' ' + fMissing; } return label; } } case IClasspathEntry.CPE_VARIABLE: { String label = getVariableString(path); if (cpentry.isMissing()) { label = label + ' ' + fMissing; } return label; } case IClasspathEntry.CPE_PROJECT: String label = path.lastSegment(); if (cpentry.isMissing()) { label = label + ' ' + fMissing; } return label; case IClasspathEntry.CPE_CONTAINER: try { IClasspathContainer container = JavaCore.getClasspathContainer(path, cpentry.getJavaProject()); if (container != null) { return container.getDescription(); } ClasspathContainerInitializer initializer = JavaCore .getClasspathContainerInitializer(path.segment(0)); if (initializer != null) { String description = initializer.getDescription(path, cpentry.getJavaProject()); return Messages.format(NewWizardMessages.CPListLabelProvider_unbound_library, description); } } catch (JavaModelException e) { } return BasicElementLabels.getPathLabel(path, false); case IClasspathEntry.CPE_SOURCE: { String pathLabel = BasicElementLabels.getPathLabel(path, false); StringBuffer buf = new StringBuffer(pathLabel); IPath linkTarget = cpentry.getLinkTarget(); if (linkTarget != null) { buf.append(JavaElementLabels.CONCAT_STRING); buf.append(BasicElementLabels.getPathLabel(linkTarget, true)); } IResource resource = cpentry.getResource(); if (resource != null && !resource.exists()) { buf.append(' '); if (cpentry.isMissing()) { buf.append(fMissing); } else { buf.append(fNewLabel); } } else if (cpentry.getOrginalPath() == null) { buf.append(' '); buf.append(fNewLabel); } return buf.toString(); } default: // pass } return NewWizardMessages.CPListLabelProvider_unknown_element_label; } private String getPathString(IPath path, boolean isExternal) { if (ArchiveFileFilter.isArchivePath(path, true)) { String appended = BasicElementLabels.getPathLabel(path.removeLastSegments(1), isExternal); String lastSegment = BasicElementLabels.getResourceName(path.lastSegment()); return Messages.format(NewWizardMessages.CPListLabelProvider_twopart, new String[] { lastSegment, appended }); } else { return BasicElementLabels.getPathLabel(path, isExternal); } } private String getVariableString(IPath path) { String name = BasicElementLabels.getPathLabel(path, false); IPath entryPath = JavaCore.getClasspathVariable(path.segment(0)); if (entryPath != null) { String appended = BasicElementLabels.getPathLabel(entryPath.append(path.removeFirstSegments(1)), true); return Messages.format(NewWizardMessages.CPListLabelProvider_twopart, new String[] { name, appended }); } else { return name; } } private ImageDescriptor getCPListElementBaseImage(CPListElement cpentry) { switch (cpentry.getEntryKind()) { case IClasspathEntry.CPE_SOURCE: if (cpentry.getPath().segmentCount() == 1) { return fProjectImage; } else { return fSharedImages.getImageDescriptor(ISharedImages.IMG_OBJS_PACKFRAG_ROOT); } case IClasspathEntry.CPE_LIBRARY: IResource res = cpentry.getResource(); IPath path = (IPath) cpentry.getAttribute(CPListElement.SOURCEATTACHMENT); if (res == null) { if (ArchiveFileFilter.isArchivePath(cpentry.getPath(), true)) { if (path == null || path.isEmpty()) { return fSharedImages.getImageDescriptor(ISharedImages.IMG_OBJS_EXTERNAL_ARCHIVE); } else { return fSharedImages .getImageDescriptor(ISharedImages.IMG_OBJS_EXTERNAL_ARCHIVE_WITH_SOURCE); } } else { if (path == null || path.isEmpty()) { return JavaPluginImages.DESC_OBJS_CLASSFOLDER; } else { return JavaPluginImages.DESC_OBJS_CLASSFOLDER_WSRC; } } } else if (res instanceof IFile) { if (path == null || path.isEmpty()) { return fSharedImages.getImageDescriptor(ISharedImages.IMG_OBJS_JAR); } else { return fSharedImages.getImageDescriptor(ISharedImages.IMG_OBJS_JAR_WITH_SOURCE); } } else { return fSharedImages.getImageDescriptor(ISharedImages.IMG_OBJS_PACKFRAG_ROOT); } case IClasspathEntry.CPE_PROJECT: return fProjectImage; case IClasspathEntry.CPE_VARIABLE: ImageDescriptor variableImage = fSharedImages .getImageDescriptor(ISharedImages.IMG_OBJS_CLASSPATH_VAR_ENTRY); if (cpentry.isDeprecated()) { return new JavaElementImageDescriptor(variableImage, JavaElementImageDescriptor.DEPRECATED, JavaElementImageProvider.SMALL_SIZE); } return variableImage; case IClasspathEntry.CPE_CONTAINER: return fSharedImages.getImageDescriptor(ISharedImages.IMG_OBJS_LIBRARY); default: return null; } } @Override public Image getImage(Object element) { if (element instanceof CPListElement) { CPListElement cpentry = (CPListElement) element; ImageDescriptor imageDescriptor = getCPListElementBaseImage(cpentry); if (imageDescriptor != null) { if (cpentry.isMissing() || cpentry.hasMissingChildren()) { imageDescriptor = new JavaElementImageDescriptor(imageDescriptor, JavaElementImageDescriptor.ERROR, JavaElementImageProvider.SMALL_SIZE); } return fRegistry.get(imageDescriptor); } } else if (element instanceof CPListElementAttribute) { CPListElementAttribute attribute = (CPListElementAttribute) element; String key = (attribute).getKey(); if (key.equals(CPListElement.SOURCEATTACHMENT)) { return fRegistry.get(JavaPluginImages.DESC_OBJS_SOURCE_ATTACH_ATTRIB); } else if (key.equals(CPListElement.OUTPUT)) { return fRegistry.get(JavaPluginImages.DESC_OBJS_OUTPUT_FOLDER_ATTRIB); } else if (key.equals(CPListElement.EXCLUSION)) { return fRegistry.get(JavaPluginImages.DESC_OBJS_EXCLUSION_FILTER_ATTRIB); } else if (key.equals(CPListElement.INCLUSION)) { return fRegistry.get(JavaPluginImages.DESC_OBJS_INCLUSION_FILTER_ATTRIB); } else if (key.equals(CPListElement.ACCESSRULES)) { return fRegistry.get(JavaPluginImages.DESC_OBJS_ACCESSRULES_ATTRIB); } else if (key.equals(CPListElement.IGNORE_OPTIONAL_PROBLEMS)) { Image image = fRegistry.get(getCPListElementBaseImage(attribute.getParent())); if (image != null) { ImageDescriptor overlay = JavaPluginImages.DESC_OVR_IGNORE_OPTIONAL_PROBLEMS; ImageDescriptor imageDescriptor = new DecorationOverlayIcon(image, overlay, IDecoration.BOTTOM_LEFT); return fRegistry.get(imageDescriptor); } } else { ClasspathAttributeConfiguration config = fAttributeDescriptors.get(key); if (config != null) { return fRegistry.get(config.getImageDescriptor(attribute.getClasspathAttributeAccess())); } } return fSharedImages.getImage(ISharedImages.IMG_OBJS_CLASSPATH_VAR_ENTRY); } else if (element instanceof CPUserLibraryElement) { if (((CPUserLibraryElement) element).hasMissingChildren()) { ImageDescriptor descriptor = fSharedImages.getImageDescriptor(ISharedImages.IMG_OBJS_LIBRARY); if (descriptor != null) { return fRegistry.get(new JavaElementImageDescriptor(descriptor, JavaElementImageDescriptor.ERROR, JavaElementImageProvider.SMALL_SIZE)); } } return fSharedImages.getImage(ISharedImages.IMG_OBJS_LIBRARY); } else if (element instanceof IAccessRule) { IAccessRule rule = (IAccessRule) element; return AccessRulesLabelProvider.getResolutionImage(rule.getKind()); } return null; } }