/
PluginTagLib.groovy
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/
PluginTagLib.groovy
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/*
* Copyright 2004-2005 the original author or authors.
*
* 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.codehaus.groovy.grails.plugins.web.taglib
import grails.artefact.Artefact
import org.codehaus.groovy.grails.plugins.GrailsPluginManager
/**
* Tags to inspect available plugins.
*
* @author Graeme Rocher
* @since 1.1
*/
@Artefact("TagLibrary")
class PluginTagLib {
static namespace = "plugin"
GrailsPluginManager pluginManager
/**
* Gets the path to a particular plugin.<br/>
*
* eg. <plugin:path name="myPlugin" />
*
* @attr name REQUIRED the plugin name
*/
Closure path = { attrs, body ->
out << pluginManager.getPluginPath(attrs.name)
}
/**
* Checks whether a particular plugin exists and executes the body if it does.<br/>
*
* eg. <plugin:isAvailable name="hibernate">print me</plugin:isAvailable>
*
* @attr name REQUIRED the plugin name
* @attr version the plugin version
*/
Closure isAvailable = { attrs, body ->
if (checkPluginExists(attrs.version, attrs.name)) {
out << body()
}
}
/**
* Checks whether a particular plugin does not exist and executes the body if it does.<br/>
*
* eg. <plugin:isNotAvailable name="hibernate">print me</plugin:isNotAvailable>
*
* @attr name REQUIRED the plugin name
* @attr version the plugin version
*/
Closure isNotAvailable = { attrs, body ->
if (!checkPluginExists(attrs.version, attrs.name)) {
out << body()
}
}
private boolean checkPluginExists(version, name) {
if (name) {
if (version && pluginManager.getGrailsPlugin(name, version)) {
return true
}
if (pluginManager.hasGrailsPlugin(name)) {
return true
}
}
return false
}
}