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.Object
Loads and unloads plugins.JAR file contents
When loading a plugin, jEdit looks for the following resources:- A file named
actions.xml
defining plugin actions. Only one such file per plugin is allowed. SeeActionSet
for syntax. - A file named
browser.actions.xml
defining file system browser actions. Only one such file per plugin is allowed. SeeActionSet
for syntax. - A file named
dockables.xml
defining dockable windows. Only one such file per plugin is allowed. SeeDockableWindowManager
for syntax. - A file named
services.xml
defining additional services offered by the plugin, such as virtual file systems. Only one such file per plugin is allowed. SeeServiceManager
for syntax. - File with extension
.props
containing 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. SeeEditPlugin
for information about properties used by jEdit. Seejava.util.Properties
for 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 extendEditPlugin
and 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.- Since:
- jEdit 4.2pre1
- Version:
- $Id: PluginJAR.java 22920 2013-04-06 15:03:55Z kerik-sf $
- Author:
- Slava Pestov
- See Also:
jEdit.getProperty(String)
,jEdit.getPlugin(String)
,jEdit.getPlugins()
,jEdit.getPluginJAR(String)
,jEdit.getPluginJARs()
,jEdit.addPluginJAR(String)
,jEdit.removePluginJAR(PluginJAR,boolean)
,ActionSet
,DockableWindowManager
,OptionPane
,PluginJAR
,ServiceManager
- A file named
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
PluginJAR.PluginCacheEntry
Used by theDockableWindowManager
andServiceManager
to 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 void
activatePlugin()
Loads the plugin core class.void
activatePluginIfNecessary()
Should be called after a new plugin is installed.boolean
checkDependencies()
Returns true if all dependencies are satisified, false otherwise.void
deactivatePlugin(boolean exit)
Unloads the plugin core class.static java.lang.String
findPlugin(java.lang.String className)
Unlike getPlugin(), will return a PluginJAR that is not yet loaded, given its classname.PluginJAR.PluginCacheEntry
generateCache()
ActionSet
getActionSet()
Returns the plugin's action set for the jEdit action contextjEdit.getActionContext()
.ActionSet
getBrowserActionSet()
Returns the plugin's action set for the file system browser action contextVFSBrowser.getActionContext()
.java.lang.String
getCachePath()
Returns the full path name of this plugin's summary file.JARClassLoader
getClassLoader()
Returns the plugin's class loader.static java.util.Set<java.lang.String>
getDependencySet(java.lang.String className)
java.lang.String[]
getDependentPlugins()
java.net.URL
getDockablesURI()
Returns the location of the plugin'sdockables.xml
file.java.io.File
getFile()
Returns a file pointing to the plugin JAR.java.lang.String
getPath()
Returns the full path name of this plugin's JAR file.EditPlugin
getPlugin()
Returns the plugin core class for this JAR file.static PluginJAR.PluginCacheEntry
getPluginCache(PluginJAR plugin)
java.util.Set<java.lang.String>
getRequiredJars()
Returns the required jars of this plugin.java.lang.String[]
getResources()
java.net.URL
getServicesURI()
Returns the location of the plugin'sservices.xml
file.java.util.zip.ZipFile
getZipFile()
Returns the plugin's JAR file, opening it if necessary.static PluginJAR
load(java.lang.String path, boolean loadDependents)
Loads a plugin, and its dependent plugins if necessary.java.lang.String
toString()
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.
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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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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.IOException
Returns 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.xml
file; 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.xml
file; 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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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()
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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.xml
file.- Since:
- jEdit 4.2pre1
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getServicesURI
public java.net.URL getServicesURI()
Returns the location of the plugin'sservices.xml
file.- Since:
- jEdit 4.2pre1
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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getPluginCache
public static PluginJAR.PluginCacheEntry getPluginCache(PluginJAR plugin)
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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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