LegacyInjector (ImageJ2 Javadocs 0-SNAPSHOT API)

java.lang.Object
- net.imagej.patcher.LegacyInjector

```
public class LegacyInjector
extends Object
```
Overrides class behavior of ImageJ1 classes using bytecode manipulation. This class uses the CodeHacker (which uses Javassist) to inject method hooks, which are implemented in the net.imagej.patcher package.

Author:

Curtis Rueden

Constructor Summary

Constructors
Constructor and Description

LegacyInjector()

Constructors
Constructor and Description
`LegacyInjector()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static String`	`getImageJ1Version(net.imagej.patcher.CodeHacker hacker)` Determines the ImageJ 1.x version without loading the ImageJ 1.x classes.
`void`	`injectHooks(ClassLoader classLoader)` Overrides class behavior of ImageJ1 classes by injecting method hooks.
`void`	`injectHooks(ClassLoader classLoader, boolean headless)` Overrides class behavior of ImageJ1 classes by injecting method hooks.
`static LegacyHooks`	`installHooks(ClassLoader classLoader, LegacyHooks hooks)`
`static boolean`	`isImageJ1VersionAtLeast(net.imagej.patcher.CodeHacker hacker, String minimalVersion)`
`static void`	`preinit()`
`static void`	`preinit(ClassLoader classLoader)`
`static void`	`writeJar(File outputJar, boolean headless, boolean fullIJJar)` Writes a .jar file with the patched classes.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- LegacyInjector
```
public LegacyInjector()
```

Method Detail

injectHooks
```
public void injectHooks(ClassLoader classLoader)
```
Overrides class behavior of ImageJ1 classes by injecting method hooks.

Parameters:

classLoader - the class loader into which to load the patched classes

getImageJ1Version
```
public static String getImageJ1Version(net.imagej.patcher.CodeHacker hacker)
```
Determines the ImageJ 1.x version without loading the ImageJ 1.x classes.

Parameters:

hacker - the CodeHacker instance to use

Returns:

the ImageJ 1.x version

isImageJ1VersionAtLeast

public static boolean isImageJ1VersionAtLeast(net.imagej.patcher.CodeHacker hacker,
                                              String minimalVersion)

injectHooks
```
public void injectHooks(ClassLoader classLoader,
                        boolean headless)
```
Overrides class behavior of ImageJ1 classes by injecting method hooks.

Parameters:

classLoader - the class loader into which to load the patched classes

headless - whether to include headless patches

writeJar

public static void writeJar(File outputJar,
                            boolean headless,
                            boolean fullIJJar)
                     throws ClassNotFoundException,
                            IOException,
                            javassist.NotFoundException

Writes a .jar file with the patched classes.

Parameters:: outputJar - the .jar file to write to; headless - whether to include the headless patches; fullIJJar - whether to include unpatched ImageJ 1.x classes and resources, too
Throws:: ClassNotFoundException; IOException; javassist.NotFoundException

preinit
```
public static void preinit()
```

preinit

public static void preinit(ClassLoader classLoader)

installHooks

public static LegacyHooks installHooks(ClassLoader classLoader,
                                       LegacyHooks hooks)
                                throws UnsupportedOperationException

Throws:: UnsupportedOperationException

Class LegacyInjector

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

LegacyInjector

Method Detail

injectHooks

getImageJ1Version

isImageJ1VersionAtLeast

injectHooks

writeJar

preinit

preinit

installHooks