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CCM NG/ccm-cms: AssetTypesManager for retrieving information about available asset types. 

git-svn-id: https://svn.libreccm.org/ccm/ccm_ng@4649 8810af33-2d31-482b-a856-94f89814c4df
jensp 2017-03-29 08:27:11 +00:00
parent 1421206eb6
commit ebbee41a84
5 changed files with 550 additions and 0 deletions
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27
ccm-cms/src/main/java/com/arsdigita/cms/ui/assets/AssetForm.java 100644
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/*
* Copyright (C) 2017 LibreCCM Foundation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
package com.arsdigita.cms.ui.assets;
/**
*
* @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
*/
public class AssetForm {
}

95
ccm-cms/src/main/java/org/librecms/assets/AssetType.java 100644
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/*
* Copyright (C) 2017 LibreCCM Foundation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
package org.librecms.assets;
import com.arsdigita.cms.ui.assets.AssetForm;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Used to describe an asset type. It provides the class name of edit/create
* form for the asset. Can also be used to customise the keys and bundles used
* to retrieve the label and the description of an asset type.
*
* The only required parameter is {@link #assetForm()} which provides the form
* for editing and creating assets of the annotated type. The other parameters
* can be left empty. If left empty a internal default value will be used.
*
* This annotation should only be used on subclasses of
* {@link org.librecms.contentsection.Asset}.
*
* @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
*/
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface AssetType {
/**
* The form for editing and creating an asset of the annotated class. This
* parameter is required.
*
* @return The form for editing and creating assets of the annotated sub
* class {@link org.librecms.contentsection.Asset}.
*/
Class<? extends AssetForm> assetForm();
/**
* The key for the localised label of the asset type. If not set the default
* value {@code label} is used.
*
* @return The key for the localised label of the asset type.
*/
String labelKey() default "";
/**
* The bundle which provides the label of the asset type. If not set the
* default value is used. Default is the fully qualified class name of the
* annotated class with suffix {@code Bundle}. For example the default
* bundle for the asset type {@link org.librecms.assets.Image} is
* {@code org.librecms.assets.ImageBundle}.
*
* @return The fully qualified name of the bundle providing the label for
* the asset type.
*/
String labelBundle() default "";
/**
* The key for the description of the asset type in the description bundle.
* Default value is {@code descripion}.
*
* @return The key for the description of the asset type.
*/
String descriptionKey() default "";
/**
* The bundle which provides the description of the asset type. If not set
* the default value is used. Default is the fully qualified class name of
* the annotated class with the suffix {@code Bundle}. For example the
* default bundle for the asset type {@link org.librecms.assets.Image} is
* {@code org.librecms.assets.ImageBundle}.
*
* @return The fully qualified name of the bundle providing the description
* of the asset type.
*/
String descriptionBundle() default "";
}

185
ccm-cms/src/main/java/org/librecms/assets/AssetTypeInfo.java 100644
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/*
* Copyright (C) 2017 LibreCCM Foundation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
package org.librecms.assets;
import com.arsdigita.cms.ui.assets.AssetForm;
import org.librecms.contentsection.Asset;
import java.util.Objects;
/**
* A easy to use encapsulation for the informations about an asset type.
*
* @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
*/
public class AssetTypeInfo {
/**
* The bundle which provides the localised label of the asset type.
*/
private String labelBundle;
/**
* The key of the label in the {@link #labelBundle}.
*/
private String labelKey;
/**
* The bundle which provides the localised description of the asset type.
*/
private String descriptionBundle;
/**
* The key of the description in the {@link #descriptionBundle}.
*/
private String descriptionKey;
/**
* The class of the asset type.
*/
private Class<? extends Asset> assetClass;
/**
* The form for editing and creating asset of the type described.
*/
private Class<? extends AssetForm> assetForm;
public String getLabelBundle() {
return labelBundle;
}
public void setLabelBundle(final String labelBundle) {
this.labelBundle = labelBundle;
}
public String getLabelKey() {
return labelKey;
}
public void setLabelKey(final String labelKey) {
this.labelKey = labelKey;
}
public String getDescriptionBundle() {
return descriptionBundle;
}
public void setDescriptionBundle(final String descriptionBundle) {
this.descriptionBundle = descriptionBundle;
}
public String getDescriptionKey() {
return descriptionKey;
}
public void setDescriptionKey(final String descriptionKey) {
this.descriptionKey = descriptionKey;
}
public Class<? extends Asset> getAssetClass() {
return assetClass;
}
public void setAssetClass(final Class<? extends Asset> assetClass) {
this.assetClass = assetClass;
}
public Class<? extends AssetForm> getAssetForm() {
return assetForm;
}
public void setAssetForm(final Class<? extends AssetForm> assetForm) {
this.assetForm = assetForm;
}
@Override
public int hashCode() {
int hash = 5;
hash = 59 * hash + Objects.hashCode(labelBundle);
hash = 59 * hash + Objects.hashCode(labelKey);
hash = 59 * hash + Objects.hashCode(descriptionBundle);
hash = 59 * hash + Objects.hashCode(descriptionKey);
hash = 59 * hash + Objects.hashCode(assetClass);
hash = 59 * hash + Objects.hashCode(assetForm);
return hash;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof AssetTypeInfo)) {
return false;
}
final AssetTypeInfo other = (AssetTypeInfo) obj;
if (!other.canEqual(this)) {
return false;
}
if (!Objects.equals(labelBundle, other.getLabelBundle())) {
return false;
}
if (!Objects.equals(labelKey, other.getLabelKey())) {
return false;
}
if (!Objects.equals(descriptionBundle, other.getDescriptionBundle())) {
return false;
}
if (!Objects.equals(descriptionKey, other.getDescriptionKey())) {
return false;
}
if (!Objects.equals(assetClass, other.getAssetClass())) {
return false;
}
return Objects.equals(assetForm, other.getAssetForm());
}
private boolean canEqual(final Object obj) {
return obj instanceof AssetTypeInfo;
}
@Override
public final String toString() {
return toString("");
}
public String toString(final String data) {
return String.format("%s{ "
+ "labelBundle = \"%s\", "
+ "labelKey = \"%s\", "
+ "descriptionBundle = \"%s\", "
+ "descriptionKey = \"%s\", "
+ "assetClass = \"%s\", "
+ "assetForm = \"%s\"%s "
+ " }",
super.toString(),
labelBundle,
labelKey,
descriptionBundle,
descriptionKey,
Objects.toString(assetClass),
Objects.toString(assetForm),
data);
}
}

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ccm-cms/src/main/java/org/librecms/assets/AssetTypes.java 100644
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/*
* Copyright (C) 2017 LibreCCM Foundation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
package org.librecms.assets;
import org.librecms.contentsection.Asset;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Used on a module class like {@link org.librecms.Cms} to inform to system
* which asset types are provided by the module.
*
* @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
*/
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface AssetTypes {
Class<? extends Asset>[] value();
}

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ccm-cms/src/main/java/org/librecms/assets/AssetTypesManager.java 100644
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/*
* Copyright (C) 2017 LibreCCM Foundation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
package org.librecms.assets;
import org.libreccm.modules.CcmModule;
import org.librecms.contentsection.Asset;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.ServiceLoader;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.stream.Collectors;
import javax.annotation.PostConstruct;
import javax.enterprise.context.RequestScoped;
/**
* Provides informations about the available asset types.
*
* @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
*/
@RequestScoped
public class AssetTypesManager {
private static final String DEFAULT_DESCRIPTION_KEY = "description";
private static final String DEFAULT_LABEL_KEY = "label";
/**
* A list of all asset types available.
*/
private List<AssetTypeInfo> availableAssetTypes;
/**
* Initialises the class (is called by CDI). This method is called by the
* CDI container after an instance of this class has been created by the CDI
* container. This method creates the list {@link #availableAssetTypes}.
*/
@PostConstruct
protected void initialize() {
final ServiceLoader<CcmModule> modules = ServiceLoader
.load(CcmModule.class);
final SortedSet<Class<? extends Asset>> assetTypes = new TreeSet<>(
(type1, type2) -> type1.getName().compareTo(type2.getName()));
for (final CcmModule module : modules) {
final AssetTypes annotation = module
.getClass()
.getAnnotation(AssetTypes.class);
if (annotation == null) {
continue;
}
assetTypes.addAll(Arrays.asList(annotation.value()));
}
availableAssetTypes = assetTypes
.stream()
.filter(type -> type.getAnnotation(AssetType.class) != null)
.map(assetTypeClass -> createAssetTypeInfo(assetTypeClass))
.collect(Collectors.toList());
}
/**
* Helper method for creating the info object for a asset type.
*
* @param assetTypeClass The class which provides the implementation of the
* asset type.
*
* @return A {@link AssetTypeInfo} object describing the asset type.
*/
private AssetTypeInfo createAssetTypeInfo(
final Class<? extends Asset> assetTypeClass) {
Objects.requireNonNull(assetTypeClass);
final AssetTypeInfo assetTypeInfo = new AssetTypeInfo();
assetTypeInfo.setAssetClass(assetTypeClass);
final String defaultBundleName = String.format("%sBundle",
assetTypeClass.getName());
final AssetType assetType = assetTypeClass
.getAnnotation(AssetType.class);
if (assetType == null) {
assetTypeInfo.setLabelBundle(defaultBundleName);
assetTypeInfo.setDescriptionBundle(defaultBundleName);
assetTypeInfo.setLabelKey(DEFAULT_LABEL_KEY);
assetTypeInfo.setDescriptionKey(DEFAULT_DESCRIPTION_KEY);
} else {
if (assetType.labelBundle().isEmpty()) {
assetTypeInfo.setLabelBundle(defaultBundleName);
} else {
assetTypeInfo.setLabelBundle(assetType.labelBundle());
}
if (assetType.labelKey().isEmpty()) {
assetTypeInfo.setLabelKey(DEFAULT_LABEL_KEY);
} else {
assetTypeInfo.setLabelKey(assetType.labelKey());
}
if (assetType.descriptionBundle().isEmpty()) {
assetTypeInfo.setDescriptionBundle(defaultBundleName);
} else {
assetTypeInfo.setDescriptionKey(assetType.descriptionBundle());
}
if (assetType.descriptionKey().isEmpty()) {
assetTypeInfo.setDescriptionKey(DEFAULT_DESCRIPTION_KEY);
} else {
assetTypeInfo.setDescriptionKey(assetType.descriptionKey());
}
assetTypeInfo.setAssetForm(assetType.assetForm());
}
return assetTypeInfo;
}
/**
* Retrieves a list of all available asset types.
*
* @return A list all available asset types.
*/
public List<AssetTypeInfo> getAvailableAssetTypes() {
return Collections.unmodifiableList(availableAssetTypes);
}
/**
* Get the {@link AssetTypeInfo} for a specific type.
*
* @param assetTypeClass The class representing the asset type.
*
* @return A {@link AssetTypeInfo} object describing the asset type.
*/
public AssetTypeInfo getAssetTypeInfo(
final Class<? extends Asset> assetTypeClass) {
Objects.requireNonNull(assetTypeClass);
return createAssetTypeInfo(assetTypeClass);
}
/**
* Convenient method for getting the {@link AssetTypeInfo} about a specific
* asset type.
*
* @param assetTypeClass The fully qualified name of the class representing
* the asset type.
*
* @return A {@link AssetTypeInfo} object describing the asset type.
*
* @throws IllegalArgumentException If no class with the provided name
* exists or the class is not a subclass of
* {@link Asset}.
*/
@SuppressWarnings("unchecked")
public AssetTypeInfo getAssetTypeInfo(final String assetTypeClass) {
Objects.requireNonNull(assetTypeClass);
final Class<?> clazz;
try {
clazz = Class.forName(assetTypeClass);
} catch (ClassNotFoundException ex) {
throw new IllegalArgumentException(String.format(
"There is not class \"%s\".", assetTypeClass),
ex);
}
if (!Asset.class.isAssignableFrom(clazz)) {
throw new IllegalArgumentException(String.format(
"Class \"%s\" is not a subclass of of \"%s\".",
assetTypeClass,
Asset.class.getName()));
}
return getAssetTypeInfo((Class<? extends Asset>) clazz);
}
}