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Public API for the Apache MyFaces Trinidad project
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.myfaces.trinidad.skin;
import java.util.HashMap;
import java.util.Map;
import javax.el.ValueExpression;
/**
* SkinMetadata encapsulates information about a skin. SkinMetadata is instantiated using the nested
* Builder class.
*
* {@code
* SkinMetadata mySkinMetadata = new SkinMetadata.Builder()
* .baseSkinId("alta-v1.desktop")
* .id("mySkin.desktop")
* .family("mySkin")
* .renderKitId(SkinMetadata.RenderKit.DESKTOP)
* .styleSheetName("my/css/location.css")
* .version(new SkinVersion("v1"))
* .build();
* }
*
* SkinMetadata is used mainly in two ways: First, as a representation of a Skin. Second, as a means
* to query Skins.
*
* SkinProvider#getSkinMetadata returns a collection of SkinMetadata. The collection returned from
* this method can be built by the SkinProvider implementations beforehand, so that it can publish
* the information about the skins that it supports to callers. Creation of SkinMetadata is a far
* less costly process than creating a Skin. SkinMetadata created for this purpose should contain
* all relevant information. SkinProviders can also use SkinMetadata objects to create the actual
* Skin objects using SkinFactory#createSkin API as well. In this case, SkinMetadata should be well
* formed with all relevant information so that SkinFactory can create the skin.
*
* SkinMetadata is used as query object to retrieve Skin from a SkinProvider#getSkin. Querying Skins
* are based on id, family, version and renderkit. For querying Skins, user should set either id or
* family as mandatory. Other information (even if present) are not relevant while searching for a
* skin.
*
*
* @see SkinProvider
* @see Builder
* @see Skin
* @see SkinFeatures
* @see CustomMetadata
*/
public final class SkinMetadata
{
private SkinMetadata(Builder builder)
{
this._id = builder._id;
this._family = builder._family;
if (builder._version == null)
this._version = SkinVersion.EMPTY_SKIN_VERSION;
else
this._version = builder._version;
if (builder._renderKitId == null)
this._renderKitId = RenderKitId.DESKTOP;
else
this._renderKitId = builder._renderKitId;
this._baseSkinId = builder._baseSkinId;
this._styleSheetName = builder._styleSheetName;
this._resourceBundleName = builder._resourceBundleName;
this._translationSource = builder._translationSource;
this._features = builder._features;
this._metadata = builder._metadata;
}
/**
* @return id of the Skin
*/
public String getId()
{
return _id;
}
/**
* @return family which the Skin belongs to
*/
public String getFamily()
{
return _family;
}
/**
* @return renderKit {@link RenderKit} id of the Skin
*/
public String getRenderKitId()
{
return _renderKitId.id();
}
/**
* @return version {@link SkinVersion} of the Skin
*/
public SkinVersion getVersion()
{
return _version;
}
/**
* @return styleSheetName for the Skin. This points to the actual Skin file and is loaded using
* NameResolver {@link org.apache.myfaces.trinidad.share.io.NameResolver} implementation.
*/
public String getStyleSheetName()
{
return _styleSheetName;
}
/**
* @return resource bundle name for the Skin which contains the translations. If both
* translationSource and resourceBundleName is provided, resourceBundleName takes the
* precedence.
*/
public String getResourceBundleName()
{
return _resourceBundleName;
}
/**
* @return translation source for the Skin, alternate way to specify the translations. If both
* translationSource and resourceBundleName is provided, resourceBundleName takes the
* precedence.
*/
public ValueExpression getTranslationSource()
{
return _translationSource;
}
/**
* @return id of the base Skin for this Skin
*/
public String getBaseSkinId()
{
return _baseSkinId;
}
/**
* @return features {@link SkinFeatures} for this Skin
*/
public SkinFeatures getFeatures()
{
return _features;
}
/**
* @return metadata {@link CustomMetadata} for this Skin
*/
public CustomMetadata getMetadata()
{
return _metadata;
}
@Override
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
SkinMetadata that = (SkinMetadata) o;
if (_id != null ? !_id.equals(that._id) : that._id != null) return false;
if (_family != null ? !_family.equals(that._family) : that._family != null) return false;
if (_renderKitId != null ? !_renderKitId.equals(that._renderKitId) : that._renderKitId != null)
return false;
if (_resourceBundleName != null
? !_resourceBundleName.equals(that._resourceBundleName)
: that._resourceBundleName != null) return false;
if (_styleSheetName != null
? !_styleSheetName.equals(that._styleSheetName)
: that._styleSheetName != null) return false;
if (_translationSource != null
? !_translationSource.equals(that._translationSource)
: that._translationSource != null) return false;
if (_version != null ? !_version.equals(that._version) : that._version != null) return false;
if (_baseSkinId != null ? !_baseSkinId.equals(that._baseSkinId) : that._baseSkinId != null)
return false;
if (_features != null ? !_features.equals(that._features) : that._features != null)
return false;
if (_metadata != null ? !_metadata.equals(that._metadata) : that._metadata != null)
return false;
return true;
}
@Override
public int hashCode()
{
int result = 17;
result = 37 * result + (null == _id ? 0 : _id.hashCode());
result = 37 * result + (null == _family ? 0 : _family.hashCode());
result = 37 * result + (null == _renderKitId ? 0 : _renderKitId.hashCode());
result = 37 * result + (null == _version ? 0 : _version.hashCode());
result = 37 * result + (null == _resourceBundleName ? 0 : _resourceBundleName.hashCode());
result = 37 * result + (null == _translationSource ? 0 : _translationSource.hashCode());
result = 37 * result + (null == _styleSheetName ? 0 : _styleSheetName.hashCode());
result = 37 * result + (null == _baseSkinId ? 0 : _baseSkinId.hashCode());
result = 37 * result + (null == _features ? 0 : _features.hashCode());
result = 37 * result + (null == _metadata ? 0 : _metadata.hashCode());
return result;
}
@Override
public String toString()
{
StringBuilder toString = new StringBuilder("SkinMetadata [");
if (_id != null)
toString.append("Id: ").append(_id).append(", ");
if (_family != null)
toString.append("Family: ").append(_family).append(", ");
if (_renderKitId != null)
toString.append("RenderKitId: ").append(_renderKitId).append(", ");
if (_version != SkinVersion.EMPTY_SKIN_VERSION)
toString.append("Version: ").append(_version).append(", ");
if (_resourceBundleName != null)
toString.append("ResourceBundleName: ").append(_resourceBundleName).append(", ");
if (_styleSheetName != null)
toString.append("StyleSheetName: ").append(_styleSheetName).append(", ");
if (_translationSource != null)
toString.append("TranslationSource: ").append(_translationSource).append(", ");
if (_baseSkinId != null)
toString.append("BaseSkinId: ").append(_baseSkinId).append(", ");
if (_features != null && !_features.isEmpty())
toString.append(_features).append(", ");
if (_metadata != null && !_metadata.isEmpty())
toString.append(_metadata).append(", ");
toString.append(']');
return toString.toString();
}
/**
* Enumeration representing RenderKit
*/
public enum RenderKitId
{
/**
* Renderkit Id for DESKTOP
*/
DESKTOP("org.apache.myfaces.trinidad.desktop"),
/**
* Renderkit Id for PDA
*/
PDA("org.apache.myfaces.trinidad.pda"),
/**
* Renderkit Id for PORTLET
*/
PORTLET("portlet");
private RenderKitId(String id)
{
if (id == null) throw new NullPointerException();
_id = id;
}
/**
* @return the id of this RenderKit.
*/
public String id()
{
return _id;
}
@Override
public String toString()
{
return _id;
}
/**
* Returns the RenderKit instance or null if no id matches or id is passed as
* null.
*
* @param id of RenderKit to return
* @return RenderKit with the specified id
* @throws IllegalArgumentException if there is no enum with the specified name.
*/
public static RenderKitId fromId(String id)
{
if (id == null)
return null;
RenderKitId renderKit = ID_TO_RENDER_KIT.get(id);
if (renderKit == null)
throw new IllegalArgumentException();
return renderKit;
}
private static final Map ID_TO_RENDER_KIT =
new HashMap();
static
{
RenderKitId[] instances = RenderKitId.class.getEnumConstants();
for (int i = 0; i < instances.length; i++)
{
ID_TO_RENDER_KIT.put(instances[i].toString(), instances[i]);
}
}
private final String _id;
}
/**
* convenience builder class for SkinMetadata SkinMetadata object can be created using this:
*
* {@code
* SkinMetadata mySkinMetadata = new SkinMetadata.Builder()
* .baseSkinId("alta-v1.desktop")
* .id("mySkin.desktop")
* .family("mySkin")
* .renderKitId(SkinMetadata.RenderKit.DESKTOP)
* .styleSheetName("my/css/location.css")
* .version(new SkinVersion("v1"))
* .build();
* }
*
*/
public static class Builder
{
public Builder()
{
this._features = new SkinFeatures();
this._metadata = new CustomMetadata();
}
/**
* Mandatory while creating a Skin using SkinFactory#createSkin can be used while querying Skin
* using SkinProvider#getSkin either this or family is typically set while querying Skin
*
* @param id
* @return
*/
public Builder id(String id)
{
this._id = id;
return this;
}
/**
* Mandatory while creating a Skin using SkinFactory#createSkin can be used while querying Skin
* using SkinProvider#getSkin either this or id is typically set while querying Skin
*
* @param family
* @return
*/
public Builder family(String family)
{
this._family = family;
return this;
}
/**
* Recommended to be set while creating a Skin using SkinFactory#createSkin can be used while
* querying Skin using SkinProvider#getSkin
*
* @param renderKitId
* @return
*/
public Builder renderKitId(RenderKitId renderKitId)
{
this._renderKitId = renderKitId;
return this;
}
/**
* Mandatory while creating a Skin using SkinFactory#createSkin Not used while querying Skin
* using SkinProvider#getSkin
*
* @param styleSheetName
* @return
*/
public Builder styleSheetName(String styleSheetName)
{
this._styleSheetName = styleSheetName;
return this;
}
/**
* Recommended to be set while creating a Skin using SkinFactory#createSkin Not used while
* querying Skin using SkinProvider#getSkin
*
* @param resourceBundleName
* @return
*/
public Builder resourceBundleName(String resourceBundleName)
{
this._resourceBundleName = resourceBundleName;
return this;
}
/**
* Recommended to be set while creating a Skin using SkinFactory#createSkin Not used while
* querying Skin using SkinProvider#getSkin
*
* @param translationSource
* @return
*/
public Builder translationSource(ValueExpression translationSource)
{
this._translationSource = translationSource;
return this;
}
/**
* Mandatory while creating a Skin using SkinFactory#createSkin Not used while querying Skin
* using SkinProvider#getSkin
*
* @param baseSkinId
* @return
*/
public Builder baseSkinId(String baseSkinId)
{
this._baseSkinId = baseSkinId;
return this;
}
/**
* Recommended to be set while creating a Skin using SkinFactory#createSkin can be used while
* querying Skin using SkinProvider#getSkin
*
* @param version
* @return
*/
public Builder version(SkinVersion version)
{
this._version = version;
return this;
}
/**
* Recommended to be set (if applicable) while creating a Skin using SkinFactory#createSkin Not
* used while querying Skin using SkinProvider#getSkin
*
* @param features
* @return
*/
public Builder features(SkinFeatures features)
{
// this is intialized to an empty object in the constructor.
// we always let it be an empty object, not null
if (features != null)
this._features = features;
return this;
}
/**
* Recommended to be set (if applicable) while creating a Skin using SkinFactory#createSkin Not
* used while querying Skin using SkinProvider#getSkin
*
* @param metadata
* @return
*/
public Builder metadata(CustomMetadata metadata)
{
// this is intialized to an empty object in the constructor.
// we always let it be an empty object, not null
if (metadata != null)
this._metadata = metadata;
return this;
}
/**
* call this method after you have set all the information that you wanted to
*
* @return
*/
public SkinMetadata build()
{
return new SkinMetadata(this);
}
private String _id;
private String _family;
private RenderKitId _renderKitId;
private String _styleSheetName;
private String _resourceBundleName;
private ValueExpression _translationSource;
private String _baseSkinId;
private SkinVersion _version;
private SkinFeatures _features;
private CustomMetadata _metadata;
}
private String _id;
private String _family;
private RenderKitId _renderKitId;
private String _baseSkinId;
private String _styleSheetName;
private String _resourceBundleName;
private ValueExpression _translationSource;
private SkinVersion _version;
private SkinFeatures _features;
private CustomMetadata _metadata;
}