Package org.gjt.sp.jedit
Class PluginJAR
- java.lang.Object
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- org.gjt.sp.jedit.PluginJAR
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public class PluginJAR extends java.lang.ObjectLoads and unloads plugins.JAR file contents
When loading a plugin, jEdit looks for the following resources:- A file named
actions.xmldefining plugin actions. Only one such file per plugin is allowed. SeeActionSetfor syntax. - A file named
browser.actions.xmldefining file system browser actions. Only one such file per plugin is allowed. SeeActionSetfor syntax. - A file named
dockables.xmldefining dockable windows. Only one such file per plugin is allowed. SeeDockableWindowManagerfor syntax. - A file named
services.xmldefining additional services offered by the plugin, such as virtual file systems. Only one such file per plugin is allowed. SeeServiceManagerfor syntax. - File with extension
.propscontaining name/value pairs separated by an equals sign. A plugin can supply any number of property files. Property files are used to define plugin men items, plugin option panes, as well as arbitriary settings and strings used by the plugin. SeeEditPluginfor information about properties used by jEdit. Seejava.util.Propertiesfor property file syntax. - Since jEdit 5.0, files named lang_[language_iso_code].properties are localization files. If one of those files match the current language, jEdit will load it. If a label is missing in the localization file, it will be loaded from the other .props files. Those files will be ignored by jEdit's versions older than 5.0 and do not cause any problem See jEdit's localization wiki
Plugin. This class, known as the plugin core class must extendEditPluginand define a few required properties, otherwise it is ignored.Dynamic and deferred loading
Unlike in prior jEdit versions, jEdit 4.2 and later allow plugins to be added and removed to the resident set at any time using thejEdit.addPluginJAR(String)andjEdit.removePluginJAR(PluginJAR,boolean)methods. Furthermore, the plugin core class might not be loaded until the plugin is first used. SeeEditPlugin.start()for a full description. - A file named
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Nested Class Summary
Nested Classes Modifier and Type Class Description static classPluginJAR.PluginCacheEntryUsed by theDockableWindowManagerandServiceManagerto handle caching.
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Constructor Summary
Constructors Constructor Description PluginJAR(java.io.File file)Creates a PluginJAR object which is not necessarily loaded, but can be later.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description voidactivatePlugin()Loads the plugin core class.voidactivatePluginIfNecessary()Should be called after a new plugin is installed.booleancheckDependencies()Returns true if all dependencies are satisified, false otherwise.voiddeactivatePlugin(boolean exit)Unloads the plugin core class.static java.lang.StringfindPlugin(java.lang.String className)Unlike getPlugin(), will return a PluginJAR that is not yet loaded, given its classname.PluginJAR.PluginCacheEntrygenerateCache()ActionSetgetActionSet()Returns the plugin's action set for the jEdit action contextjEdit.getActionContext().java.lang.String[]getAllDependentPlugins()ActionSetgetBrowserActionSet()Returns the plugin's action set for the file system browser action contextVFSBrowser.getActionContext().java.lang.StringgetCachePath()Returns the full path name of this plugin's summary file.JARClassLoadergetClassLoader()Returns the plugin's class loader.static java.util.Set<java.lang.String>getDependencies(java.lang.String classname)Returns a list of dependencies by searching the plugin properties.static java.util.Set<java.lang.String>getDependencySet(java.lang.String className)java.lang.String[]getDependentPlugins()java.net.URLgetDockablesURI()Returns the location of the plugin'sdockables.xmlfile.java.io.FilegetFile()Returns a file pointing to the plugin JAR.java.util.Collection<java.lang.String>getFiles()Get the files listed in this plugin and return full paths to themjava.util.Collection<java.lang.String>getJars()Get the jars listed in this plugin and return full paths to themstatic java.util.Set<java.lang.String>getOptionalDependencies(java.lang.String classname)Returns a list of optional dependencies by searching the plugin properties.java.lang.String[]getOptionallyDependentPlugins()java.lang.StringgetPath()Returns the full path name of this plugin's JAR file.EditPlugingetPlugin()Returns the plugin core class for this JAR file.static PluginJAR.PluginCacheEntrygetPluginCache(PluginJAR plugin)static PluginJAR.PluginCacheEntrygetPluginCacheEntry(java.lang.String path)Returns the cache entry for an installed but not loaded plugin.java.util.Set<java.lang.String>getRequiredJars()Returns the required jars of this plugin.java.lang.String[]getResources()java.net.URLgetServicesURI()Returns the location of the plugin'sservices.xmlfile.java.util.zip.ZipFilegetZipFile()Returns the plugin's JAR file, opening it if necessary.booleaninit()static PluginJARload(java.lang.String path, boolean loadDependents)Loads a plugin, and its dependent plugins if necessary.static java.util.Collection<java.lang.String>parseJarsFilesString(java.lang.String path, java.lang.String jarsString)parse the files listed in plugin.CLASSNAME.jars or plugin.CLASSNAME.files and return full paths to each file of the list.static java.util.Collection<java.lang.String>parseJarsFilesStringNames(java.lang.String jarsString)parse the files listed in plugin.CLASSNAME.jars or plugin.CLASSNAME.files and return them as a collectionjava.lang.StringtoString()static voidtransitiveClosure(java.lang.String[] dependents, java.util.List<java.lang.String> listModel)If plugin A is needed by B, and B is needed by C, we want to tell the user that A is needed by B and C when they try to unload A.voiduninit(boolean exit)
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Constructor Detail
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PluginJAR
public PluginJAR(java.io.File file)
Creates a PluginJAR object which is not necessarily loaded, but can be later.- See Also:
load(String, boolean)
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Method Detail
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load
public static PluginJAR load(java.lang.String path, boolean loadDependents)
Loads a plugin, and its dependent plugins if necessary.- Since:
- jEdit 4.3pre7
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parseJarsFilesString
public static java.util.Collection<java.lang.String> parseJarsFilesString(java.lang.String path, java.lang.String jarsString)parse the files listed in plugin.CLASSNAME.jars or plugin.CLASSNAME.files and return full paths to each file of the list.- Since:
- jEdit 5.3pre1
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parseJarsFilesStringNames
public static java.util.Collection<java.lang.String> parseJarsFilesStringNames(java.lang.String jarsString)
parse the files listed in plugin.CLASSNAME.jars or plugin.CLASSNAME.files and return them as a collection- Since:
- jEdit 5.3pre1
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getJars
public java.util.Collection<java.lang.String> getJars()
Get the jars listed in this plugin and return full paths to them- Returns:
- jars full paths or empty collection if plugin is null
- Since:
- jEdit 5.3pre1
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getFiles
public java.util.Collection<java.lang.String> getFiles()
Get the files listed in this plugin and return full paths to them- Returns:
- files full paths or empty collection if plugin is null
- Since:
- jEdit 5.3pre1
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getPath
public java.lang.String getPath()
Returns the full path name of this plugin's JAR file.
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findPlugin
public static java.lang.String findPlugin(java.lang.String className)
Unlike getPlugin(), will return a PluginJAR that is not yet loaded, given its classname.- Parameters:
className- a class name- Returns:
- the JARpath of the first PluginJAR it can find which contains this className, or null if not found.
- Since:
- 4.3pre7
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getCachePath
public java.lang.String getCachePath()
Returns the full path name of this plugin's summary file. The summary file is used to store certain information which allows loading of the plugin's resources and core class to be deferred until the plugin is first used. As long as a plugin is using the jEdit 4.2 plugin API, no extra effort is required to take advantage of the summary cache.
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getDependencySet
public static java.util.Set<java.lang.String> getDependencySet(java.lang.String className)
- Parameters:
className- of a plugin that we wish to load- Returns:
- an ordered set of JARpaths that contains the plugins that need to be (re)loaded, in the correct order.
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getFile
public java.io.File getFile()
Returns a file pointing to the plugin JAR.
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getClassLoader
public JARClassLoader getClassLoader()
Returns the plugin's class loader.
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getZipFile
public java.util.zip.ZipFile getZipFile() throws java.io.IOExceptionReturns the plugin's JAR file, opening it if necessary.- Throws:
java.io.IOException- Since:
- jEdit 4.2pre1
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getActionSet
public ActionSet getActionSet()
Returns the plugin's action set for the jEdit action contextjEdit.getActionContext(). These actions are loaded from theactions.xmlfile; seeActionSet. .- Since:
- jEdit 4.2pre1
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getBrowserActionSet
public ActionSet getBrowserActionSet()
Returns the plugin's action set for the file system browser action contextVFSBrowser.getActionContext(). These actions are loaded from thebrowser.actions.xmlfile; seeActionSet. .- Since:
- jEdit 4.2pre1
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checkDependencies
public boolean checkDependencies()
Returns true if all dependencies are satisified, false otherwise. Also if dependencies are not satisfied, the plugin is marked as "broken".
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getRequiredJars
public java.util.Set<java.lang.String> getRequiredJars()
Returns the required jars of this plugin.- Returns:
- the required jars of this plugin
- Since:
- jEdit 4.3pre12
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getDependencies
@Nonnull public static java.util.Set<java.lang.String> getDependencies(java.lang.String classname) throws java.lang.IllegalArgumentExceptionReturns a list of dependencies by searching the plugin properties.- Parameters:
classname- The classname of a plugin- Returns:
- A list of classnames of plugins the plugin depends on.
- Throws:
java.lang.IllegalArgumentException
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getOptionalDependencies
public static java.util.Set<java.lang.String> getOptionalDependencies(java.lang.String classname) throws java.lang.IllegalArgumentExceptionReturns a list of optional dependencies by searching the plugin properties.- Parameters:
classname- The classname of a plugin- Returns:
- A list of classnames of plugins the plugin optionally depends on.
- Throws:
java.lang.IllegalArgumentException
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transitiveClosure
public static void transitiveClosure(java.lang.String[] dependents, java.util.List<java.lang.String> listModel)If plugin A is needed by B, and B is needed by C, we want to tell the user that A is needed by B and C when they try to unload A.- Parameters:
dependents- a set of plugins which we wish to disablelistModel- a set of plugins which will be affected, and will need to be disabled also.
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getDependentPlugins
public java.lang.String[] getDependentPlugins()
- Returns:
- an array of plugin names that have a hard dependency on this plugin
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getOptionallyDependentPlugins
public java.lang.String[] getOptionallyDependentPlugins()
- Returns:
- an array of plugin names that have an optional dependency on this plugin
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getAllDependentPlugins
public java.lang.String[] getAllDependentPlugins()
- Returns:
- an array of plugin names that have a dependency or an optional dependency on this plugin,
this returns a combination of
getDependentPluginsandgetOptionallyDependentPlugins.
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getPlugin
public EditPlugin getPlugin()
Returns the plugin core class for this JAR file. Note that if the plugin has not been activated, this will return an instance ofEditPlugin.Deferred. If you need the actual plugin core class instance, callactivatePlugin()first. If the plugin is not yet loaded, returns null- Since:
- jEdit 4.2pre1
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activatePlugin
public void activatePlugin()
Loads the plugin core class. Does nothing if the plugin core class has already been loaded. This method might be called on startup, depending on what properties are set. SeeEditPlugin.start(). This method is thread-safe.- Since:
- jEdit 4.2pre1
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activatePluginIfNecessary
public void activatePluginIfNecessary()
Should be called after a new plugin is installed.- Since:
- jEdit 4.2pre2
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deactivatePlugin
public void deactivatePlugin(boolean exit)
Unloads the plugin core class. Does nothing if the plugin core class has not been loaded. This method can only be called from the AWT event dispatch thread!- Since:
- jEdit 4.2pre3
- See Also:
EditPlugin.stop()
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getDockablesURI
public java.net.URL getDockablesURI()
Returns the location of the plugin'sdockables.xmlfile.- Since:
- jEdit 4.2pre1
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getServicesURI
public java.net.URL getServicesURI()
Returns the location of the plugin'sservices.xmlfile.- Since:
- jEdit 4.2pre1
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toString
public java.lang.String toString()
- Overrides:
toStringin classjava.lang.Object
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getPluginCache
public static PluginJAR.PluginCacheEntry getPluginCache(PluginJAR plugin)
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getPluginCacheEntry
public static PluginJAR.PluginCacheEntry getPluginCacheEntry(java.lang.String path) throws java.io.IOException
Returns the cache entry for an installed but not loaded plugin. There is no need to use this method if the plugin is loaded.- Parameters:
path- path to the the plugin jar- Returns:
- cache entry or null
- Throws:
java.io.IOException- if jEdit cannot generate cache- Since:
- jEdit 5.3pre1
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init
public boolean init()
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uninit
public void uninit(boolean exit)
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getResources
public java.lang.String[] getResources()
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generateCache
public PluginJAR.PluginCacheEntry generateCache() throws java.io.IOException
- Throws:
java.io.IOException
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